app/vminsert/netstorage: refactor snb rebuild

Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -5,10 +5,10 @@ body:
   - type: markdown
     attributes:
       value: |
-        Before filling a bug report it would be great to [upgrade](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#how-to-upgrade) 
+        Before filling a bug report it would be great to [upgrade](https://docs.victoriametrics.com/#how-to-upgrade) 
         to [the latest available release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/latest)
         and verify whether the bug is reproducible there.
-        It's also recommended to read the [troubleshooting docs](https://docs.victoriametrics.com/victoriametrics/troubleshooting/) first.
+        It's also recommended to read the [troubleshooting docs](https://docs.victoriametrics.com/troubleshooting/) first.
   - type: textarea
     id: describe-the-bug
     attributes:
@@ -60,12 +60,12 @@ body:
   
         For VictoriaMetrics health-state issues please provide full-length screenshots
         of Grafana dashboards if possible:
-          * [Grafana dashboard for single-node VictoriaMetrics](https://grafana.com/grafana/dashboards/10229)
-          * [Grafana dashboard for VictoriaMetrics cluster](https://grafana.com/grafana/dashboards/11176)
+          * [Grafana dashboard for single-node VictoriaMetrics](https://grafana.com/grafana/dashboards/10229/)
+          * [Grafana dashboard for VictoriaMetrics cluster](https://grafana.com/grafana/dashboards/11176/)
         
         See how to setup monitoring here:
-          * [monitoring for single-node VictoriaMetrics](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#monitoring)
-          * [monitoring for VictoriaMetrics cluster](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/#monitoring)
+          * [monitoring for single-node VictoriaMetrics](https://docs.victoriametrics.com/#monitoring)
+          * [monitoring for VictoriaMetrics cluster](https://docs.victoriametrics.com/cluster-victoriametrics/#monitoring)
     validations:
       required: false
   - type: textarea

.github/ISSUE_TEMPLATE/question.yml

@@ -24,9 +24,9 @@ body:
       label: Troubleshooting docs
       description: I am familiar with the following troubleshooting docs
       options:
-        - label: General - https://docs.victoriametrics.com/victoriametrics/troubleshooting/
+        - label: General - https://docs.victoriametrics.com/troubleshooting/
           required: false
-        - label: vmagent - https://docs.victoriametrics.com/victoriametrics/vmagent/#troubleshooting
+        - label: vmagent - https://docs.victoriametrics.com/vmagent/#troubleshooting
           required: false
-        - label: vmalert - https://docs.victoriametrics.com/victoriametrics/vmalert/#troubleshooting
+        - label: vmalert - https://docs.victoriametrics.com/vmalert/#troubleshooting
           required: false

.github/copilot-instructions.md

@@ -1,23 +0,0 @@
-# Project Overview
-
-VictoriaMetrics is a fast, cost-saving, and scalable solution for monitoring and managing time series data. It delivers high performance and reliability, making it an ideal choice for businesses of all sizes.
-
-## Folder Structure
-
-- `/app`: Contains the compilable binaries.
-- `/lib`: Contains the golang reusable libraries
-- `/docs/victoriametrics`: Contains documentation for the project.
-- `/apptest/tests`: Contains integration tests.
-
-## Libraries and Frameworks
-
-- Backend: Golang, no framework. Use third-party libraries sparingly.
-- Frontend: React.
-
-## Code review guidelines
-
-Ensure the feature or bugfix includes a changelog entry in /docs/victoriametrics/changelog/CHANGELOG.md.
-Verify the entry is under the ## tip section and matches the structure and style of existing entries.
-Chore-only changes may be omitted from the changelog.
-
-

.github/pull_request_template.md

@@ -6,5 +6,4 @@ Please provide a brief description of the changes you made. Be as specific as po
 
 The following checks are **mandatory**:
 
-- [ ] My change adheres to [VictoriaMetrics contributing guidelines](https://docs.victoriametrics.com/victoriametrics/contributing/#pull-request-checklist).
-- [ ] My change adheres to [VictoriaMetrics development goals](https://docs.victoriametrics.com/victoriametrics/goals/).
+- [ ] My change adheres [VictoriaMetrics contributing guidelines](https://docs.victoriametrics.com/contributing/).

.github/workflows/build.yml

@@ -7,20 +7,16 @@ on:
       - master
     paths:
       - '**.go'
-      - '**/Dockerfile'
+      - '**/Dockerfile*' # The trailing * is for app/vmui/Dockerfile-*.
       - '**/Makefile'
-      - '!app/vmui/**'
-      - '.github/workflows/build.yml'
   pull_request:
     branches:
       - cluster
       - master
     paths:
       - '**.go'
-      - '**/Dockerfile'
+      - '**/Dockerfile*' # The trailing * is for app/vmui/Dockerfile-*.
       - '**/Makefile'
-      - '!app/vmui/**'
-      - '.github/workflows/build.yml'
 
 permissions:
   contents: read
@@ -31,39 +27,28 @@ concurrency:
 
 jobs:
   build:
-    name: ${{ matrix.os }}-${{ matrix.arch }}
+    name: Build
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - os: linux
-            arch: amd64
-          - os: linux
-            arch: arm64
-          - os: linux
-            arch: arm
-          - os: linux
-            arch: ppc64le
-          - os: linux
-            arch: 386
-          - os: freebsd
-            arch: amd64
-          - os: openbsd
-            arch: amd64
     steps:
       - name: Code checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
 
       - name: Setup Go
         id: go
         uses: actions/setup-go@v5
         with:
-          cache-dependency-path: |
-            go.sum
-            Makefile
-            app/**/Makefile
           go-version: stable
+          cache: false
 
-      - name: Build vmcluster for ${{ matrix.os }}-${{ matrix.arch }}
-        run: make vmcluster-${{ matrix.os }}-${{ matrix.arch }}
+      - name: Cache Go artifacts
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/bin
+            ~/go/pkg/mod
+          key: go-artifacts-${{ runner.os }}-crossbuild-${{ steps.go.outputs.go-version }}-${{ hashFiles('go.sum', 'Makefile', 'app/**/Makefile') }}
+          restore-keys: go-artifacts-${{ runner.os }}-crossbuild-
+
+      - name: Run crossbuild
+        run: make crossbuild

.github/workflows/codeql-analysis-go.yml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
 
       - name: Set up Go
         id: go

.github/workflows/codeql-analysis-js-ts.yml

@@ -0,0 +1,46 @@
+name: 'CodeQL JS/TS'
+
+on:
+  push:
+    branches:
+      - cluster
+      - master
+    paths:
+      - '**.js'
+      - '**.ts'
+      - '**.tsx'
+  pull_request:
+    branches:
+      - cluster
+      - master
+    paths:
+      - '**.js'
+      - '**.ts'
+      - '**.tsx'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: javascript-typescript
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: 'language:js/ts'

.github/workflows/docs.yaml

@@ -1,57 +0,0 @@
-name: publish-docs
-on:
-  push:
-    branches:
-      - 'master'
-    paths:
-      - 'docs/**'
-      - '.github/workflows/docs.yaml'
-  workflow_dispatch: {}
-permissions:
-  contents: read  # This is required for actions/checkout and to commit back image update
-  deployments: write
-jobs:
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    steps:
-      - name: Code checkout
-        uses: actions/checkout@v5
-        with:
-          path: __vm
-
-      - name: Checkout private code
-        uses: actions/checkout@v5
-        with:
-          repository: VictoriaMetrics/vmdocs
-          token: ${{ secrets.VM_BOT_GH_TOKEN }}
-          path: __vm-docs
-
-      - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v6
-        id: import-gpg
-        with:
-          gpg_private_key: ${{ secrets.VM_BOT_GPG_PRIVATE_KEY }}
-          passphrase: ${{ secrets.VM_BOT_PASSPHRASE }}
-          git_user_signingkey: true
-          git_commit_gpgsign: true
-          git_config_global: true
-
-      - name: Copy docs
-        id: update
-        run: |
-          find docs -type d -maxdepth 1 -mindepth 1 -exec \
-            sh -c 'rsync -zarvh --delete {}/ ../__vm-docs/content/$(basename {})/' \;
-          echo "SHORT_SHA=$(git rev-parse --short $GITHUB_SHA)" >> $GITHUB_OUTPUT
-        working-directory: __vm
-
-      - name: Push to vmdocs
-        run: |
-          git config --global user.name "${{ steps.import-gpg.outputs.email }}"
-          git config --global user.email "${{ steps.import-gpg.outputs.email }}"
-          if [[ -n $(git status --porcelain) ]]; then
-            git add .
-            git commit -S -m "sync docs with VictoriaMetrics/VictoriaMetrics commit: ${{ steps.update.outputs.SHORT_SHA }}"
-            git push
-          fi
-        working-directory: __vm-docs

.github/workflows/main.yml

@@ -0,0 +1,93 @@
+name: main
+
+on:
+  push:
+    branches:
+      - cluster
+      - master
+    paths:
+      - '**.go'
+  pull_request:
+    branches:
+      - cluster
+      - master
+    paths:
+      - '**.go'
+
+permissions:
+  contents: read
+
+concurrency:
+  cancel-in-progress: true
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+
+jobs:
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Code checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        id: go
+        uses: actions/setup-go@v5
+        with:
+          cache: false
+          go-version: stable
+
+      - name: Cache Go artifacts
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/bin
+            ~/go/pkg/mod
+          key: go-artifacts-${{ runner.os }}-check-all-${{ steps.go.outputs.go-version }}-${{ hashFiles('go.sum', 'Makefile', 'app/**/Makefile') }}
+          restore-keys: go-artifacts-${{ runner.os }}-check-all-
+
+      - name: Run check-all
+        run: |
+          make check-all
+          git diff --exit-code
+
+  test:
+    name: test
+    needs: lint
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        scenario:
+          - 'test-full'
+          - 'test-full-386'
+          - 'test-pure'
+
+    steps:
+      - name: Code checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        id: go
+        uses: actions/setup-go@v5
+        with:
+          cache: false
+          go-version: stable
+
+      - name: Cache Go artifacts
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/bin
+            ~/go/pkg/mod
+          key: go-artifacts-${{ runner.os }}-${{ matrix.scenario }}-${{ steps.go.outputs.go-version }}-${{ hashFiles('go.sum', 'Makefile', 'app/**/Makefile') }}
+          restore-keys: go-artifacts-${{ runner.os }}-${{ matrix.scenario }}-
+
+      - name: Run tests
+        run: make ${{ matrix.scenario}}
+
+      - name: Publish coverage
+        uses: codecov/codecov-action@v4
+        with:
+          file: ./coverage.txt

.github/workflows/sync-docs.yml

@@ -0,0 +1,51 @@
+name: publish-docs
+on:
+  push:
+    branches:
+      - 'master'
+    paths:
+      - 'docs/**'
+  workflow_dispatch: {}
+permissions:
+  contents: read  # This is required for actions/checkout and to commit back image update
+  deployments: write
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Code checkout
+        uses: actions/checkout@v4
+        with:
+          path: main
+      - name: Checkout private code
+        uses: actions/checkout@v4
+        with:
+          repository: VictoriaMetrics/vmdocs
+          token: ${{ secrets.VM_BOT_GH_TOKEN }}
+          path: docs
+      - name: Import GPG key
+        uses: crazy-max/ghaction-import-gpg@v6
+        with:
+          gpg_private_key: ${{ secrets.VM_BOT_GPG_PRIVATE_KEY }}
+          passphrase: ${{ secrets.VM_BOT_PASSPHRASE }}
+          git_user_signingkey: true
+          git_commit_gpgsign: true
+          workdir: docs
+      - name: Set short git commit SHA
+        id: vars
+        run: |
+          calculatedSha=$(git rev-parse --short ${{ github.sha }})
+          echo "short_sha=$calculatedSha" >> $GITHUB_OUTPUT
+        working-directory: main
+      - name: update code and commit
+        run: |
+          rm -rf content
+          cp -r ../main/docs content
+          make clean-after-copy
+          git config --global user.name "${{ steps.import-gpg.outputs.email }}"
+          git config --global user.email "${{ steps.import-gpg.outputs.email }}"
+          git add .
+          git commit -S -m "sync docs with VictoriaMetrics/VictoriaMetrics commit: ${{ steps.vars.outputs.short_sha }}"
+          git push
+        working-directory: docs

.github/workflows/test.yml

@@ -1,113 +0,0 @@
-name: test
-
-on:
-  push:
-    branches:
-      - cluster
-      - master
-    paths:
-      - '**.go'
-      - 'go.*'
-      - '.github/workflows/main.yml'
-  pull_request:
-    branches:
-      - cluster
-      - master
-    paths:
-      - '**.go'
-      - 'go.*'
-      - '.github/workflows/main.yml'
-
-permissions:
-  contents: read
-
-concurrency:
-  cancel-in-progress: true
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-
-
-jobs:
-  lint:
-    name: lint
-    runs-on: ubuntu-latest
-    steps:
-      - name: Code checkout
-        uses: actions/checkout@v5
-
-      - name: Setup Go
-        id: go
-        uses: actions/setup-go@v5
-        with:
-          cache-dependency-path: |
-            go.sum
-            Makefile
-            app/**/Makefile
-          go-version: stable
-
-
-      - name: Cache golangci-lint
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.cache/golangci-lint
-            ~/go/bin
-          key: golangci-lint-${{ runner.os }}-${{ hashFiles('.golangci.yml') }}
-
-      - name: Run check-all
-        run: |
-          make check-all
-          git diff --exit-code
-
-  unit:
-    name: unit
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        scenario:
-          - 'test-full'
-          - 'test-full-386'
-          - 'test-pure'
-
-    steps:
-      - name: Code checkout
-        uses: actions/checkout@v5
-
-      - name: Setup Go
-        id: go
-        uses: actions/setup-go@v5
-        with:
-          cache-dependency-path: |
-            go.sum
-            Makefile
-            app/**/Makefile
-          go-version: stable
-
-      - name: Run tests
-        run: GOGC=10 make ${{ matrix.scenario}}
-
-      - name: Publish coverage
-        uses: codecov/codecov-action@v5
-        with:
-          files: ./coverage.txt
-
-  integration:
-    name: integration
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Code checkout
-        uses: actions/checkout@v5
-
-      - name: Setup Go
-        id: go
-        uses: actions/setup-go@v5
-        with:
-          cache-dependency-path: |
-            go.sum
-            Makefile
-            app/**/Makefile
-          go-version: stable
-
-      - name: Run integration tests
-        run: make integration-test

.github/workflows/vmui.yml

@@ -1,82 +0,0 @@
-name: vmui
-
-on:
-  push:
-    branches:
-      - cluster
-      - master
-    paths:
-      - 'app/vmui/packages/vmui/**'
-      - '.github/workflows/vmui.yml'
-  pull_request:
-    branches:
-      - cluster
-      - master
-    paths:
-      - 'app/vmui/packages/vmui/**'
-      - '.github/workflows/vmui.yml'
-
-permissions:
-  contents: read
-  packages: read
-  pull-requests: read
-  checks: write
-
-concurrency:
-  cancel-in-progress: true
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-
-jobs:
-  vmui-checks:
-    name: VMUI Checks (lint, test, typecheck)
-    runs-on: ubuntu-latest
-    steps:
-      - name: Code checkout
-        uses: actions/checkout@v5
-
-      - name: Setup Node
-        uses: actions/setup-node@v4
-        with:
-          node-version: '24.x'
-
-      - name: Cache node-modules
-        uses: actions/cache@v4
-        with:
-          path: |
-            app/vmui/packages/vmui/node_modules
-          key: vmui-artifacts-${{ runner.os }}-${{ hashFiles('package-lock.json') }}
-          restore-keys: vmui-artifacts-${{ runner.os }}-
-
-      - name: Run lint
-        id: lint
-        run: make vmui-lint
-        continue-on-error: true
-
-      - name: Run tests
-        id: test
-        run: make vmui-test
-        continue-on-error: true
-
-      - name: Run typecheck
-        id: typecheck
-        run: make vmui-typecheck
-        continue-on-error: true
-
-      - name: Annotate Code Linting Results
-        uses: ataylorme/eslint-annotate-action@v3
-        with:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          report-json: app/vmui/packages/vmui/vmui-lint-report.json
-
-      - name: Check overall status
-        run: |
-          echo "Lint status: ${{ steps.lint.outcome }}"
-          echo "Test status: ${{ steps.test.outcome }}"
-          echo "Typecheck status: ${{ steps.typecheck.outcome }}"
-
-          if [[ "${{ steps.lint.outcome }}" == "failure" || "${{ steps.test.outcome }}" == "failure" || "${{ steps.typecheck.outcome }}" == "failure" ]]; then
-            echo "One or more checks failed"
-            exit 1
-          else
-            echo "All checks passed"
-          fi

.gitignore

@@ -7,12 +7,10 @@
 .vscode
 *.test
 *.swp
-/vmdocs
 /gocache-for-docker
 /victoria-logs-data
 /victoria-metrics-data
 /vmagent-remotewrite-data
-/vlagent-remotewritewrite
 /vmstorage-data
 /vmselect-cache
 /package/temp-deb-*
@@ -27,5 +25,3 @@ _site
 /docs/.jekyll-metadata
 coverage.txt
 cspell.json
-*~
-deployment/docker/provisioning/plugins/

.golangci.yml

@@ -1,29 +1,22 @@
-version: "2"
+run:
+  timeout: 2m
+
 linters:
-  settings:
-    errcheck:
-      exclude-functions:
-        - fmt.Fprintf
-        - fmt.Fprint
-        - (net/http.ResponseWriter).Write
-  exclusions:
-    generated: lax
-    presets:
-      - common-false-positives
-      - legacy
-      - std-error-handling
-    rules:
-      - linters:
-          - staticcheck
-        text: 'SA(4003|1019|5011):'
-    paths:
-      - third_party$
-      - builtin$
-      - examples$
-formatters:
-  exclusions:
-    generated: lax
-    paths:
-      - third_party$
-      - builtin$
-      - examples$
+  enable:
+  - revive
+
+issues:
+  exclude-rules:
+  - linters:
+    - staticcheck
+    text: "SA(4003|1019|5011):"
+  include:
+  - EXC0012
+  - EXC0014
+
+linters-settings:
+  errcheck:
+    exclude-functions:
+      - "fmt.Fprintf"
+      - "fmt.Fprint"
+      - "(net/http.ResponseWriter).Write"

.wwhrd.yml

@@ -4,4 +4,3 @@ allowlist:
   - BSD-3-Clause
   - BSD-2-Clause
   - ISC
-  - MPL-2.0

CONTRIBUTING.md

@@ -1 +1 @@
-The document has been moved [here](https://docs.victoriametrics.com/victoriametrics/contributing/).
+The document has been moved [here](https://docs.victoriametrics.com/contributing/).

LICENSE

@@ -175,7 +175,7 @@
 
    END OF TERMS AND CONDITIONS
 
-   Copyright 2019-2025 VictoriaMetrics, Inc.
+   Copyright 2019-2024 VictoriaMetrics, Inc.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

Makefile

@@ -5,29 +5,23 @@ MAKE_PARALLEL := $(MAKE) -j $(MAKE_CONCURRENCY)
 DATEINFO_TAG ?= $(shell date -u +'%Y%m%d-%H%M%S')
 BUILDINFO_TAG ?= $(shell echo $$(git describe --long --all | tr '/' '-')$$( \
 	      git diff-index --quiet HEAD -- || echo '-dirty-'$$(git diff-index -u HEAD | openssl sha1 | cut -d' ' -f2 | cut -c 1-8)))
+LATEST_TAG ?= cluster-latest
 
 PKG_TAG ?= $(shell git tag -l --points-at HEAD)
 ifeq ($(PKG_TAG),)
 PKG_TAG := $(BUILDINFO_TAG)
 endif
 
-EXTRA_DOCKER_TAG_SUFFIX ?=
-EXTRA_GO_BUILD_TAGS ?=
-
 GO_BUILDINFO = -X '$(PKG_PREFIX)/lib/buildinfo.Version=$(APP_NAME)-$(DATEINFO_TAG)-$(BUILDINFO_TAG)'
-TAR_OWNERSHIP ?= --owner=1000 --group=1000
-
-GOLANGCI_LINT_VERSION := 2.4.0
 
 .PHONY: $(MAKECMDGOALS)
 
 include app/*/Makefile
-include codespell/Makefile
+include cspell/Makefile
 include docs/Makefile
 include deployment/*/Makefile
 include dashboards/Makefile
 include package/release/Makefile
-include benchmarks/Makefile
 
 all: \
 	vminsert \
@@ -82,20 +76,8 @@ vmcluster-windows-amd64: \
 	vmselect-windows-amd64 \
 	vmstorage-windows-amd64
 
-vmcluster-darwin-amd64: \
-	vminsert-darwin-amd64 \
-	vmselect-darwin-amd64 \
-	vmstorage-darwin-amd64
-
-vmcluster-darwin-arm64: \
-	vminsert-darwin-arm64 \
-	vmselect-darwin-arm64 \
-	vmstorage-darwin-arm64
-
-# When adding a new crossbuild target, please also add it to the .github/workflows/build.yml
 crossbuild: vmcluster-crossbuild
 
-# When adding a new crossbuild target, please also add it to the .github/workflows/build.yml
 vmcluster-crossbuild:
 	$(MAKE_PARALLEL) vmcluster-linux-amd64 \
 		vmcluster-linux-arm64 \
@@ -115,52 +97,12 @@ package: \
 	package-vmselect \
 	package-vmstorage
 
-publish-final-images:
-	PKG_TAG=$(TAG) APP_NAME=victoria-metrics $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG) APP_NAME=vmagent $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG) APP_NAME=vmalert $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG) APP_NAME=vmalert-tool $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG) APP_NAME=vmauth $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG) APP_NAME=vmbackup $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG) APP_NAME=vmrestore $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG) APP_NAME=vmctl $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-cluster APP_NAME=vminsert $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-cluster APP_NAME=vmselect $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-cluster APP_NAME=vmstorage $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=victoria-metrics $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmagent $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmalert $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmauth $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmbackup $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmrestore $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise-cluster APP_NAME=vminsert $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise-cluster APP_NAME=vmselect $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise-cluster APP_NAME=vmstorage $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmgateway $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmbackupmanager $(MAKE) publish-via-docker-from-rc && \
-	PKG_TAG=$(TAG) $(MAKE) publish-latest
-
-publish-latest:
-	PKG_TAG=$(TAG) APP_NAME=victoria-metrics $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG) APP_NAME=vmagent $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG) APP_NAME=vmalert $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG) APP_NAME=vmalert-tool $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG) APP_NAME=vmauth $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG) APP_NAME=vmbackup $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG) APP_NAME=vmrestore $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG) APP_NAME=vmctl $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG)-cluster APP_NAME=vminsert $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG)-cluster APP_NAME=vmselect $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG)-cluster APP_NAME=vmstorage $(MAKE) publish-via-docker-latest && \
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmgateway $(MAKE) publish-via-docker-latest
-	PKG_TAG=$(TAG)-enterprise APP_NAME=vmbackupmanager $(MAKE) publish-via-docker-latest
-
 publish-release:
 	rm -rf bin/*
-	git checkout $(TAG) && $(MAKE) release && $(MAKE) publish && \
-		git checkout $(TAG)-cluster && $(MAKE) release && $(MAKE) publish && \
-		git checkout $(TAG)-enterprise && $(MAKE) release && $(MAKE) publish && \
-		git checkout $(TAG)-enterprise-cluster && $(MAKE) release && $(MAKE) publish
+	git checkout $(TAG) && $(MAKE) release && LATEST_TAG=stable $(MAKE) publish && \
+		git checkout $(TAG)-cluster && $(MAKE) release && LATEST_TAG=cluster-stable $(MAKE) publish && \
+		git checkout $(TAG)-enterprise && $(MAKE) release && LATEST_TAG=enterprise-stable $(MAKE) publish && \
+		git checkout $(TAG)-enterprise-cluster && $(MAKE) release && LATEST_TAG=enterprise-cluster-stable $(MAKE) publish
 
 release:
 	$(MAKE_PARALLEL) release-vmcluster
@@ -170,9 +112,7 @@ release-vmcluster: \
 	release-vmcluster-linux-arm64 \
 	release-vmcluster-freebsd-amd64 \
 	release-vmcluster-openbsd-amd64 \
-	release-vmcluster-windows-amd64 \
-	release-vmcluster-darwin-amd64 \
-	release-vmcluster-darwin-arm64
+	release-vmcluster-windows-amd64
 
 release-vmcluster-linux-amd64:
 	GOOS=linux GOARCH=amd64 $(MAKE) release-vmcluster-goos-goarch
@@ -189,18 +129,12 @@ release-vmcluster-openbsd-amd64:
 release-vmcluster-windows-amd64:
 	GOARCH=amd64 $(MAKE) release-vmcluster-windows-goarch
 
-release-vmcluster-darwin-amd64:
-	GOOS=darwin GOARCH=amd64 $(MAKE) release-vmcluster-goos-goarch
-
-release-vmcluster-darwin-arm64:
-	 GOOS=darwin GOARCH=arm64 $(MAKE) release-vmcluster-goos-goarch
-
 release-vmcluster-goos-goarch: \
 	vminsert-$(GOOS)-$(GOARCH)-prod \
 	vmselect-$(GOOS)-$(GOARCH)-prod \
 	vmstorage-$(GOOS)-$(GOARCH)-prod
 	cd bin && \
-		tar $(TAR_OWNERSHIP) --transform="flags=r;s|-$(GOOS)-$(GOARCH)||" -czf victoria-metrics-$(GOOS)-$(GOARCH)-$(PKG_TAG).tar.gz \
+		tar --transform="flags=r;s|-$(GOOS)-$(GOARCH)||" -czf victoria-metrics-$(GOOS)-$(GOARCH)-$(PKG_TAG).tar.gz \
 			vminsert-$(GOOS)-$(GOARCH)-prod \
 			vmselect-$(GOOS)-$(GOARCH)-prod \
 			vmstorage-$(GOOS)-$(GOARCH)-prod \
@@ -239,64 +173,55 @@ pprof-cpu:
 fmt:
 	gofmt -l -w -s ./lib
 	gofmt -l -w -s ./app
-	gofmt -l -w -s ./apptest
 
 vet:
-	GOEXPERIMENT=synctest go vet ./lib/...
+	go vet ./lib/...
 	go vet ./app/...
-	go vet ./apptest/...
 
 check-all: fmt vet golangci-lint govulncheck
 
 clean-checkers: remove-golangci-lint remove-govulncheck
 
 test:
-	GOEXPERIMENT=synctest go test ./lib/... ./app/...
+	go test ./lib/... ./app/...
 
 test-race:
-	GOEXPERIMENT=synctest go test -race ./lib/... ./app/...
+	go test -race ./lib/... ./app/...
 
 test-pure:
-	GOEXPERIMENT=synctest CGO_ENABLED=0 go test ./lib/... ./app/...
+	CGO_ENABLED=0 go test ./lib/... ./app/...
 
 test-full:
-	GOEXPERIMENT=synctest go test -coverprofile=coverage.txt -covermode=atomic ./lib/... ./app/...
+	go test -coverprofile=coverage.txt -covermode=atomic ./lib/... ./app/...
 
 test-full-386:
-	GOEXPERIMENT=synctest GOARCH=386 go test -coverprofile=coverage.txt -covermode=atomic ./lib/... ./app/...
-
-integration-test:
-	$(MAKE) apptest
-
-apptest:
-	$(MAKE) all vmctl vmbackup vmrestore
-	go test ./apptest/... -skip="^TestSingle.*"
+	GOARCH=386 go test -coverprofile=coverage.txt -covermode=atomic ./lib/... ./app/...
 
 benchmark:
-	GOEXPERIMENT=synctest go test -bench=. ./lib/...
+	go test -bench=. ./lib/...
 	go test -bench=. ./app/...
 
 benchmark-pure:
-	GOEXPERIMENT=synctest CGO_ENABLED=0 go test -bench=. ./lib/...
+	CGO_ENABLED=0 go test -bench=. ./lib/...
 	CGO_ENABLED=0 go test -bench=. ./app/...
 
 vendor-update:
-	go get -u ./lib/...
-	go get -u ./app/...
-	go mod tidy -compat=1.24
+	go get -u -d ./lib/...
+	go get -u -d ./app/...
+	go mod tidy -compat=1.22
 	go mod vendor
 
 app-local:
-	CGO_ENABLED=1 go build $(RACE) -ldflags "$(GO_BUILDINFO)" -tags "$(EXTRA_GO_BUILD_TAGS)" -o bin/$(APP_NAME)$(RACE) $(PKG_PREFIX)/app/$(APP_NAME)
+	CGO_ENABLED=1 go build $(RACE) -ldflags "$(GO_BUILDINFO)" -o bin/$(APP_NAME)$(RACE) $(PKG_PREFIX)/app/$(APP_NAME)
 
 app-local-pure:
-	CGO_ENABLED=0 go build $(RACE) -ldflags "$(GO_BUILDINFO)" -tags "$(EXTRA_GO_BUILD_TAGS)" -o bin/$(APP_NAME)-pure$(RACE) $(PKG_PREFIX)/app/$(APP_NAME)
+	CGO_ENABLED=0 go build $(RACE) -ldflags "$(GO_BUILDINFO)" -o bin/$(APP_NAME)-pure$(RACE) $(PKG_PREFIX)/app/$(APP_NAME)
 
 app-local-goos-goarch:
-	CGO_ENABLED=$(CGO_ENABLED) GOOS=$(GOOS) GOARCH=$(GOARCH) go build $(RACE) -ldflags "$(GO_BUILDINFO)" -tags "$(EXTRA_GO_BUILD_TAGS)" -o bin/$(APP_NAME)-$(GOOS)-$(GOARCH)$(RACE) $(PKG_PREFIX)/app/$(APP_NAME)
+	CGO_ENABLED=$(CGO_ENABLED) GOOS=$(GOOS) GOARCH=$(GOARCH) go build $(RACE) -ldflags "$(GO_BUILDINFO)" -o bin/$(APP_NAME)-$(GOOS)-$(GOARCH)$(RACE) $(PKG_PREFIX)/app/$(APP_NAME)
 
 app-local-windows-goarch:
-	CGO_ENABLED=0 GOOS=windows GOARCH=$(GOARCH) go build $(RACE) -ldflags "$(GO_BUILDINFO)" -tags "$(EXTRA_GO_BUILD_TAGS)" -o bin/$(APP_NAME)-windows-$(GOARCH)$(RACE).exe $(PKG_PREFIX)/app/$(APP_NAME)
+	CGO_ENABLED=0 GOOS=windows GOARCH=$(GOARCH) go build $(RACE) -ldflags "$(GO_BUILDINFO)" -o bin/$(APP_NAME)-windows-$(GOARCH)$(RACE).exe $(PKG_PREFIX)/app/$(APP_NAME)
 
 quicktemplate-gen: install-qtc
 	qtc
@@ -306,10 +231,10 @@ install-qtc:
 
 
 golangci-lint: install-golangci-lint
-	GOEXPERIMENT=synctest golangci-lint run
+	golangci-lint run
 
 install-golangci-lint:
-	which golangci-lint && (golangci-lint --version | grep -q $(GOLANGCI_LINT_VERSION)) || curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(shell go env GOPATH)/bin v$(GOLANGCI_LINT_VERSION)
+	which golangci-lint || curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(shell go env GOPATH)/bin v1.59.1
 
 remove-golangci-lint:
 	rm -rf `which golangci-lint`
@@ -328,3 +253,34 @@ install-wwhrd:
 
 check-licenses: install-wwhrd
 	wwhrd check -f .wwhrd.yml
+
+copy-docs:
+# The 'printf' function is used instead of 'echo' or 'echo -e' to handle line breaks (e.g. '\n') in the same way on different operating systems (MacOS/Ubuntu Linux/Arch Linux) and their shells (bash/sh/zsh/fish).
+# For details, see https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4548#issue-1782796419 and https://stackoverflow.com/questions/8467424/echo-newline-in-bash-prints-literal-n
+	echo "---" > ${DST}
+	@if [ ${ORDER} -ne 0 ]; then \
+		echo "sort: ${ORDER}" >> ${DST}; \
+		echo "weight: ${ORDER}" >> ${DST}; \
+		printf "menu:\n  docs:\n    parent: 'victoriametrics'\n    weight: ${ORDER}\n" >> ${DST}; \
+	fi
+
+	echo "title: ${TITLE}" >> ${DST}
+	@if [ ${OLD_URL} ]; then \
+		printf "aliases:\n  - ${OLD_URL}\n" >> ${DST}; \
+	fi
+	echo "---" >> ${DST}
+	cat ${SRC} >> ${DST}
+	sed -i='.tmp' 's/<img src=\"docs\//<img src=\"\//' ${DST}
+	sed -i='.tmp' 's/<source srcset=\"docs\//<source srcset=\"\//' ${DST}
+	sed -i='.tmp' 's/](docs\//](/' ${DST}
+	rm -rf docs/*.tmp
+
+# Copies docs for all components and adds the order/weight tag, title, menu position and alias with the backward compatible link for the old site.
+# For ORDER=0 it adds no order tag/weight tag.
+# FOR OLD_URL - relative link, used for backward compatibility with the link from documentation based on GitHub pages (old one)
+# FOR OLD_URL='' it adds no alias, it should be empty for every new page, don't change it for already existing links.
+# Images starting with <img src="docs/ are replaced with <img src="
+# Cluster docs are supposed to be ordered as 2nd.
+# The rest of docs is ordered manually.
+docs-sync:
+	SRC=README.md DST=docs/Cluster-VictoriaMetrics.md OLD_URL='/Cluster-VictoriaMetrics.html' ORDER=2 TITLE='Cluster version' $(MAKE) copy-docs

SECURITY.md

@@ -6,13 +6,13 @@ The following versions of VictoriaMetrics receive regular security fixes:
 
 | Version | Supported          |
 |---------|--------------------|
-| [latest release](https://docs.victoriametrics.com/victoriametrics/changelog/) | :white_check_mark: |
-| v1.102.x [LTS line](https://docs.victoriametrics.com/victoriametrics/lts-releases/) | :white_check_mark: |
-| v1.110.x [LTS line](https://docs.victoriametrics.com/victoriametrics/lts-releases/) | :white_check_mark: |
+| [latest release](https://docs.victoriametrics.com/changelog/) | :white_check_mark: |
+| v1.97.x [LTS line](https://docs.victoriametrics.com/lts-releases/) | :white_check_mark: |
+| v1.93.x [LTS line](https://docs.victoriametrics.com/lts-releases/) | :white_check_mark: |
 | other releases  | :x:                |
 
 See [this page](https://victoriametrics.com/security/) for more details.
 
 ## Reporting a Vulnerability
 
-Please report any security issues to <security@victoriametrics.com>
+Please report any security issues to security@victoriametrics.com

app/victoria-logs/Makefile

@@ -0,0 +1,113 @@
+# All these commands must run from repository root.
+
+victoria-logs:
+	APP_NAME=victoria-logs $(MAKE) app-local
+
+victoria-logs-race:
+	APP_NAME=victoria-logs RACE=-race $(MAKE) app-local
+
+victoria-logs-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker
+
+victoria-logs-pure-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-pure
+
+victoria-logs-linux-amd64-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-linux-amd64
+
+victoria-logs-linux-arm-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-linux-arm
+
+victoria-logs-linux-arm64-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-linux-arm64
+
+victoria-logs-linux-ppc64le-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-linux-ppc64le
+
+victoria-logs-linux-386-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-linux-386
+
+victoria-logs-darwin-amd64-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-darwin-amd64
+
+victoria-logs-darwin-arm64-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-darwin-arm64
+
+victoria-logs-freebsd-amd64-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-freebsd-amd64
+
+victoria-logs-openbsd-amd64-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-openbsd-amd64
+
+victoria-logs-windows-amd64-prod:
+	APP_NAME=victoria-logs $(MAKE) app-via-docker-windows-amd64
+
+package-victoria-logs:
+	APP_NAME=victoria-logs $(MAKE) package-via-docker
+
+package-victoria-logs-pure:
+	APP_NAME=victoria-logs $(MAKE) package-via-docker-pure
+
+package-victoria-logs-amd64:
+	APP_NAME=victoria-logs $(MAKE) package-via-docker-amd64
+
+package-victoria-logs-arm:
+	APP_NAME=victoria-logs $(MAKE) package-via-docker-arm
+
+package-victoria-logs-arm64:
+	APP_NAME=victoria-logs $(MAKE) package-via-docker-arm64
+
+package-victoria-logs-ppc64le:
+	APP_NAME=victoria-logs $(MAKE) package-via-docker-ppc64le
+
+package-victoria-logs-386:
+	APP_NAME=victoria-logs $(MAKE) package-via-docker-386
+
+publish-victoria-logs:
+	APP_NAME=victoria-logs $(MAKE) publish-via-docker
+
+victoria-logs-linux-amd64:
+	APP_NAME=victoria-logs CGO_ENABLED=1 GOOS=linux GOARCH=amd64 $(MAKE) app-local-goos-goarch
+
+victoria-logs-linux-arm:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=linux GOARCH=arm $(MAKE) app-local-goos-goarch
+
+victoria-logs-linux-arm64:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=linux GOARCH=arm64 $(MAKE) app-local-goos-goarch
+
+victoria-logs-linux-ppc64le:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=linux GOARCH=ppc64le $(MAKE) app-local-goos-goarch
+
+victoria-logs-linux-s390x:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=linux GOARCH=s390x $(MAKE) app-local-goos-goarch
+
+victoria-logs-linux-loong64:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=linux GOARCH=loong64 $(MAKE) app-local-goos-goarch
+
+victoria-logs-linux-386:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=linux GOARCH=386 $(MAKE) app-local-goos-goarch
+
+victoria-logs-darwin-amd64:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 $(MAKE) app-local-goos-goarch
+
+victoria-logs-darwin-arm64:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 $(MAKE) app-local-goos-goarch
+
+victoria-logs-freebsd-amd64:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 $(MAKE) app-local-goos-goarch
+
+victoria-logs-openbsd-amd64:
+	APP_NAME=victoria-logs CGO_ENABLED=0 GOOS=openbsd GOARCH=amd64 $(MAKE) app-local-goos-goarch
+
+victoria-logs-windows-amd64:
+	GOARCH=amd64 APP_NAME=victoria-logs $(MAKE) app-local-windows-goarch
+
+victoria-logs-pure:
+	APP_NAME=victoria-logs $(MAKE) app-local-pure
+
+run-victoria-logs:
+	mkdir -p victoria-logs-data
+	DOCKER_OPTS='-v $(shell pwd)/victoria-logs-data:/victoria-logs-data' \
+	APP_NAME=victoria-logs \
+	ARGS='' \
+	$(MAKE) run-via-docker

app/victoria-logs/README.md

@@ -1 +0,0 @@
-VictoriaLogs source code has been moved to [github.com/VictoriaMetrics/VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaLogs/).

app/victoria-logs/deployment/Dockerfile

@@ -0,0 +1,8 @@
+ARG base_image
+FROM $base_image
+
+EXPOSE 9428
+
+ENTRYPOINT ["/victoria-logs-prod"]
+ARG src_binary
+COPY $src_binary ./victoria-logs-prod

app/victoria-logs/main.go

@@ -0,0 +1,105 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlselect"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/envflag"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/fs"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/procutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/pushmetrics"
+)
+
+var (
+	httpListenAddrs  = flagutil.NewArrayString("httpListenAddr", "TCP address to listen for incoming http requests. See also -httpListenAddr.useProxyProtocol")
+	useProxyProtocol = flagutil.NewArrayBool("httpListenAddr.useProxyProtocol", "Whether to use proxy protocol for connections accepted at the given -httpListenAddr . "+
+		"See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt . "+
+		"With enabled proxy protocol http server cannot serve regular /metrics endpoint. Use -pushmetrics.url for metrics pushing")
+)
+
+func main() {
+	// Write flags and help message to stdout, since it is easier to grep or pipe.
+	flag.CommandLine.SetOutput(os.Stdout)
+	flag.Usage = usage
+	envflag.Parse()
+	buildinfo.Init()
+	logger.Init()
+
+	listenAddrs := *httpListenAddrs
+	if len(listenAddrs) == 0 {
+		listenAddrs = []string{":9428"}
+	}
+	logger.Infof("starting VictoriaLogs at %q...", listenAddrs)
+	startTime := time.Now()
+
+	vlstorage.Init()
+	vlselect.Init()
+	vlinsert.Init()
+
+	go httpserver.Serve(listenAddrs, useProxyProtocol, requestHandler)
+	logger.Infof("started VictoriaLogs in %.3f seconds; see https://docs.victoriametrics.com/victorialogs/", time.Since(startTime).Seconds())
+
+	pushmetrics.Init()
+	sig := procutil.WaitForSigterm()
+	logger.Infof("received signal %s", sig)
+	pushmetrics.Stop()
+
+	logger.Infof("gracefully shutting down webservice at %q", listenAddrs)
+	startTime = time.Now()
+	if err := httpserver.Stop(listenAddrs); err != nil {
+		logger.Fatalf("cannot stop the webservice: %s", err)
+	}
+	logger.Infof("successfully shut down the webservice in %.3f seconds", time.Since(startTime).Seconds())
+
+	vlinsert.Stop()
+	vlselect.Stop()
+	vlstorage.Stop()
+
+	fs.MustStopDirRemover()
+
+	logger.Infof("the VictoriaLogs has been stopped in %.3f seconds", time.Since(startTime).Seconds())
+}
+
+func requestHandler(w http.ResponseWriter, r *http.Request) bool {
+	if r.URL.Path == "/" {
+		if r.Method != http.MethodGet {
+			return false
+		}
+		w.Header().Add("Content-Type", "text/html; charset=utf-8")
+		fmt.Fprintf(w, "<h2>Single-node VictoriaLogs</h2></br>")
+		fmt.Fprintf(w, "See docs at <a href='https://docs.victoriametrics.com/victorialogs/'>https://docs.victoriametrics.com/victorialogs/</a></br>")
+		fmt.Fprintf(w, "Useful endpoints:</br>")
+		httpserver.WriteAPIHelp(w, [][2]string{
+			{"select/vmui", "Web UI for VictoriaLogs"},
+			{"metrics", "available service metrics"},
+			{"flags", "command-line flags"},
+		})
+		return true
+	}
+	if vlinsert.RequestHandler(w, r) {
+		return true
+	}
+	if vlselect.RequestHandler(w, r) {
+		return true
+	}
+	return false
+}
+
+func usage() {
+	const s = `
+victoria-logs is a log management and analytics service.
+
+See the docs at https://docs.victoriametrics.com/victorialogs/
+`
+	flagutil.Usage(s)
+}

app/victoria-logs/multiarch/Dockerfile

@@ -0,0 +1,12 @@
+# See https://medium.com/on-docker/use-multi-stage-builds-to-inject-ca-certs-ad1e8f01de1b
+ARG certs_image
+ARG root_image
+FROM $certs_image AS certs
+RUN apk update && apk upgrade && apk --update --no-cache add ca-certificates
+
+FROM $root_image
+COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+EXPOSE 9428
+ENTRYPOINT ["/victoria-logs-prod"]
+ARG TARGETARCH
+COPY victoria-logs-linux-${TARGETARCH}-prod ./victoria-logs-prod

app/vlagent/README.md

@@ -1 +0,0 @@
-VictoriaLogs source code has been moved to [github.com/VictoriaMetrics/VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaLogs/).

app/vlinsert/README.md

@@ -1 +0,0 @@
-VictoriaLogs source code has been moved to [github.com/VictoriaMetrics/VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaLogs/).

app/vlinsert/elasticsearch/bulk_response.qtpl

@@ -0,0 +1,20 @@
+{% stripspace %}
+
+{% func BulkResponse(n int, tookMs int64) %}
+{
+	"took":{%dl tookMs %},
+	"errors":false,
+	"items":[
+		{% for i := 0; i < n; i++ %}
+		{
+			"create":{
+				"status":201
+			}
+		}
+		{% if i+1 < n %},{% endif %}
+		{% endfor %}
+	]
+}
+{% endfunc %}
+
+{% endstripspace %}

app/vlinsert/elasticsearch/bulk_response.qtpl.go

@@ -0,0 +1,69 @@
+// Code generated by qtc from "bulk_response.qtpl". DO NOT EDIT.
+// See https://github.com/valyala/quicktemplate for details.
+
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:3
+package elasticsearch
+
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:3
+import (
+	qtio422016 "io"
+
+	qt422016 "github.com/valyala/quicktemplate"
+)
+
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:3
+var (
+	_ = qtio422016.Copy
+	_ = qt422016.AcquireByteBuffer
+)
+
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:3
+func StreamBulkResponse(qw422016 *qt422016.Writer, n int, tookMs int64) {
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:3
+	qw422016.N().S(`{"took":`)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:5
+	qw422016.N().DL(tookMs)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:5
+	qw422016.N().S(`,"errors":false,"items":[`)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:8
+	for i := 0; i < n; i++ {
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:8
+		qw422016.N().S(`{"create":{"status":201}}`)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:14
+		if i+1 < n {
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:14
+			qw422016.N().S(`,`)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:14
+		}
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:15
+	}
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:15
+	qw422016.N().S(`]}`)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+}
+
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+func WriteBulkResponse(qq422016 qtio422016.Writer, n int, tookMs int64) {
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+	StreamBulkResponse(qw422016, n, tookMs)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+}
+
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+func BulkResponse(n int, tookMs int64) string {
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+	WriteBulkResponse(qb422016, n, tookMs)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+	qs422016 := string(qb422016.B)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+	return qs422016
+//line app/vlinsert/elasticsearch/bulk_response.qtpl:18
+}

app/vlinsert/elasticsearch/elasticsearch.go

@@ -0,0 +1,274 @@
+package elasticsearch
+
+import (
+	"bufio"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"math"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/VictoriaMetrics/metrics"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bufferedwriter"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
+)
+
+var (
+	elasticsearchVersion = flag.String("elasticsearch.version", "8.9.0", "Elasticsearch version to report to client")
+)
+
+// RequestHandler processes Elasticsearch insert requests
+func RequestHandler(path string, w http.ResponseWriter, r *http.Request) bool {
+	w.Header().Add("Content-Type", "application/json")
+	// This header is needed for Logstash
+	w.Header().Set("X-Elastic-Product", "Elasticsearch")
+
+	if strings.HasPrefix(path, "/_ilm/policy") {
+		// Return fake response for Elasticsearch ilm request.
+		fmt.Fprintf(w, `{}`)
+		return true
+	}
+	if strings.HasPrefix(path, "/_index_template") {
+		// Return fake response for Elasticsearch index template request.
+		fmt.Fprintf(w, `{}`)
+		return true
+	}
+	if strings.HasPrefix(path, "/_ingest") {
+		// Return fake response for Elasticsearch ingest pipeline request.
+		// See: https://www.elastic.co/guide/en/elasticsearch/reference/8.8/put-pipeline-api.html
+		fmt.Fprintf(w, `{}`)
+		return true
+	}
+	if strings.HasPrefix(path, "/_nodes") {
+		// Return fake response for Elasticsearch nodes discovery request.
+		// See: https://www.elastic.co/guide/en/elasticsearch/reference/8.8/cluster.html
+		fmt.Fprintf(w, `{}`)
+		return true
+	}
+	switch path {
+	case "/":
+		switch r.Method {
+		case http.MethodGet:
+			// Return fake response for Elasticsearch ping request.
+			// See the latest available version for Elasticsearch at https://github.com/elastic/elasticsearch/releases
+			fmt.Fprintf(w, `{
+			"version": {
+				"number": %q
+			}
+		}`, *elasticsearchVersion)
+		case http.MethodHead:
+			// Return empty response for Logstash ping request.
+		}
+
+		return true
+	case "/_license":
+		// Return fake response for Elasticsearch license request.
+		fmt.Fprintf(w, `{
+			"license": {
+				"uid": "cbff45e7-c553-41f7-ae4f-9205eabd80xx",
+				"type": "oss",
+				"status": "active",
+				"expiry_date_in_millis" : 4000000000000
+			}
+		}`)
+		return true
+	case "/_bulk":
+		startTime := time.Now()
+		bulkRequestsTotal.Inc()
+
+		cp, err := insertutils.GetCommonParams(r)
+		if err != nil {
+			httpserver.Errorf(w, r, "%s", err)
+			return true
+		}
+		if err := vlstorage.CanWriteData(); err != nil {
+			httpserver.Errorf(w, r, "%s", err)
+			return true
+		}
+		lmp := cp.NewLogMessageProcessor()
+		isGzip := r.Header.Get("Content-Encoding") == "gzip"
+		n, err := readBulkRequest(r.Body, isGzip, cp.TimeField, cp.MsgField, lmp)
+		lmp.MustClose()
+		if err != nil {
+			logger.Warnf("cannot decode log message #%d in /_bulk request: %s, stream fields: %s", n, err, cp.StreamFields)
+			return true
+		}
+
+		tookMs := time.Since(startTime).Milliseconds()
+		bw := bufferedwriter.Get(w)
+		defer bufferedwriter.Put(bw)
+		WriteBulkResponse(bw, n, tookMs)
+		_ = bw.Flush()
+
+		// update bulkRequestDuration only for successfully parsed requests
+		// There is no need in updating bulkRequestDuration for request errors,
+		// since their timings are usually much smaller than the timing for successful request parsing.
+		bulkRequestDuration.UpdateDuration(startTime)
+
+		return true
+	default:
+		return false
+	}
+}
+
+var (
+	bulkRequestsTotal   = metrics.NewCounter(`vl_http_requests_total{path="/insert/elasticsearch/_bulk"}`)
+	rowsIngestedTotal   = metrics.NewCounter(`vl_rows_ingested_total{type="elasticsearch_bulk"}`)
+	bulkRequestDuration = metrics.NewHistogram(`vl_http_request_duration_seconds{path="/insert/elasticsearch/_bulk"}`)
+)
+
+func readBulkRequest(r io.Reader, isGzip bool, timeField, msgField string, lmp insertutils.LogMessageProcessor) (int, error) {
+	// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
+
+	if isGzip {
+		zr, err := common.GetGzipReader(r)
+		if err != nil {
+			return 0, fmt.Errorf("cannot read gzipped _bulk request: %w", err)
+		}
+		defer common.PutGzipReader(zr)
+		r = zr
+	}
+
+	wcr := writeconcurrencylimiter.GetReader(r)
+	defer writeconcurrencylimiter.PutReader(wcr)
+
+	lb := lineBufferPool.Get()
+	defer lineBufferPool.Put(lb)
+
+	lb.B = bytesutil.ResizeNoCopyNoOverallocate(lb.B, insertutils.MaxLineSizeBytes.IntN())
+	sc := bufio.NewScanner(wcr)
+	sc.Buffer(lb.B, len(lb.B))
+
+	n := 0
+	nCheckpoint := 0
+	for {
+		ok, err := readBulkLine(sc, timeField, msgField, lmp)
+		wcr.DecConcurrency()
+		if err != nil || !ok {
+			rowsIngestedTotal.Add(n - nCheckpoint)
+			return n, err
+		}
+		n++
+		if batchSize := n - nCheckpoint; n >= 1000 {
+			rowsIngestedTotal.Add(batchSize)
+			nCheckpoint = n
+		}
+	}
+}
+
+var lineBufferPool bytesutil.ByteBufferPool
+
+func readBulkLine(sc *bufio.Scanner, timeField, msgField string, lmp insertutils.LogMessageProcessor) (bool, error) {
+	var line []byte
+
+	// Read the command, must be "create" or "index"
+	for len(line) == 0 {
+		if !sc.Scan() {
+			if err := sc.Err(); err != nil {
+				if errors.Is(err, bufio.ErrTooLong) {
+					return false, fmt.Errorf(`cannot read "create" or "index" command, since its size exceeds -insert.maxLineSizeBytes=%d`,
+						insertutils.MaxLineSizeBytes.IntN())
+				}
+				return false, err
+			}
+			return false, nil
+		}
+		line = sc.Bytes()
+	}
+	lineStr := bytesutil.ToUnsafeString(line)
+	if !strings.Contains(lineStr, `"create"`) && !strings.Contains(lineStr, `"index"`) {
+		return false, fmt.Errorf(`unexpected command %q; expecting "create" or "index"`, line)
+	}
+
+	// Decode log message
+	if !sc.Scan() {
+		if err := sc.Err(); err != nil {
+			if errors.Is(err, bufio.ErrTooLong) {
+				return false, fmt.Errorf("cannot read log message, since its size exceeds -insert.maxLineSizeBytes=%d", insertutils.MaxLineSizeBytes.IntN())
+			}
+			return false, err
+		}
+		return false, fmt.Errorf(`missing log message after the "create" or "index" command`)
+	}
+	line = sc.Bytes()
+	p := logstorage.GetJSONParser()
+	if err := p.ParseLogMessage(line); err != nil {
+		return false, fmt.Errorf("cannot parse json-encoded log entry: %w", err)
+	}
+
+	ts, err := extractTimestampFromFields(timeField, p.Fields)
+	if err != nil {
+		return false, fmt.Errorf("cannot parse timestamp: %w", err)
+	}
+	if ts == 0 {
+		ts = time.Now().UnixNano()
+	}
+	logstorage.RenameField(p.Fields, msgField, "_msg")
+	lmp.AddRow(ts, p.Fields)
+	logstorage.PutJSONParser(p)
+
+	return true, nil
+}
+
+func extractTimestampFromFields(timeField string, fields []logstorage.Field) (int64, error) {
+	for i := range fields {
+		f := &fields[i]
+		if f.Name != timeField {
+			continue
+		}
+		timestamp, err := parseElasticsearchTimestamp(f.Value)
+		if err != nil {
+			return 0, err
+		}
+		f.Value = ""
+		return timestamp, nil
+	}
+	return 0, nil
+}
+
+func parseElasticsearchTimestamp(s string) (int64, error) {
+	if s == "0" || s == "" {
+		// Special case - zero or empty timestamp must be substituted
+		// with the current time by the caller.
+		return 0, nil
+	}
+	if len(s) < len("YYYY-MM-DD") || s[len("YYYY")] != '-' {
+		// Try parsing timestamp in milliseconds
+		n, err := strconv.ParseInt(s, 10, 64)
+		if err != nil {
+			return 0, fmt.Errorf("cannot parse timestamp in milliseconds from %q: %w", s, err)
+		}
+		if n > int64(math.MaxInt64)/1e6 {
+			return 0, fmt.Errorf("too big timestamp in milliseconds: %d; mustn't exceed %d", n, int64(math.MaxInt64)/1e6)
+		}
+		if n < int64(math.MinInt64)/1e6 {
+			return 0, fmt.Errorf("too small timestamp in milliseconds: %d; must be bigger than %d", n, int64(math.MinInt64)/1e6)
+		}
+		n *= 1e6
+		return n, nil
+	}
+	if len(s) == len("YYYY-MM-DD") {
+		t, err := time.Parse("2006-01-02", s)
+		if err != nil {
+			return 0, fmt.Errorf("cannot parse date %q: %w", s, err)
+		}
+		return t.UnixNano(), nil
+	}
+	nsecs, ok := logstorage.TryParseTimestampRFC3339Nano(s)
+	if !ok {
+		return 0, fmt.Errorf("cannot parse timestamp %q", s)
+	}
+	return nsecs, nil
+}

app/vlinsert/elasticsearch/elasticsearch_test.go

@@ -0,0 +1,103 @@
+package elasticsearch
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"testing"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+)
+
+func TestReadBulkRequest_Failure(t *testing.T) {
+	f := func(data string) {
+		t.Helper()
+
+		tlp := &insertutils.TestLogMessageProcessor{}
+		r := bytes.NewBufferString(data)
+		rows, err := readBulkRequest(r, false, "_time", "_msg", tlp)
+		if err == nil {
+			t.Fatalf("expecting non-empty error")
+		}
+		if rows != 0 {
+			t.Fatalf("unexpected non-zero rows=%d", rows)
+		}
+	}
+	f("foobar")
+	f(`{}`)
+	f(`{"create":{}}`)
+	f(`{"creat":{}}
+{}`)
+	f(`{"create":{}}
+foobar`)
+}
+
+func TestReadBulkRequest_Success(t *testing.T) {
+	f := func(data, timeField, msgField string, rowsExpected int, timestampsExpected []int64, resultExpected string) {
+		t.Helper()
+
+		tlp := &insertutils.TestLogMessageProcessor{}
+
+		// Read the request without compression
+		r := bytes.NewBufferString(data)
+		rows, err := readBulkRequest(r, false, timeField, msgField, tlp)
+		if err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		if rows != rowsExpected {
+			t.Fatalf("unexpected rows read; got %d; want %d", rows, rowsExpected)
+		}
+		if err := tlp.Verify(rowsExpected, timestampsExpected, resultExpected); err != nil {
+			t.Fatal(err)
+		}
+
+		// Read the request with compression
+		tlp = &insertutils.TestLogMessageProcessor{}
+		compressedData := compressData(data)
+		r = bytes.NewBufferString(compressedData)
+		rows, err = readBulkRequest(r, true, timeField, msgField, tlp)
+		if err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		if rows != rowsExpected {
+			t.Fatalf("unexpected rows read; got %d; want %d", rows, rowsExpected)
+		}
+		if err := tlp.Verify(rowsExpected, timestampsExpected, resultExpected); err != nil {
+			t.Fatalf("verification failure after compression: %s", err)
+		}
+	}
+
+	// Verify an empty data
+	f("", "_time", "_msg", 0, nil, "")
+	f("\n", "_time", "_msg", 0, nil, "")
+	f("\n\n", "_time", "_msg", 0, nil, "")
+
+	// Verify non-empty data
+	data := `{"create":{"_index":"filebeat-8.8.0"}}
+{"@timestamp":"2023-06-06T04:48:11.735Z","log":{"offset":71770,"file":{"path":"/var/log/auth.log"}},"message":"foobar"}
+{"create":{"_index":"filebeat-8.8.0"}}
+{"@timestamp":"2023-06-06T04:48:12.735Z","message":"baz"}
+{"index":{"_index":"filebeat-8.8.0"}}
+{"message":"xyz","@timestamp":"2023-06-06T04:48:13.735Z","x":"y"}
+`
+	timeField := "@timestamp"
+	msgField := "message"
+	rowsExpected := 3
+	timestampsExpected := []int64{1686026891735000000, 1686026892735000000, 1686026893735000000}
+	resultExpected := `{"@timestamp":"","log.offset":"71770","log.file.path":"/var/log/auth.log","_msg":"foobar"}
+{"@timestamp":"","_msg":"baz"}
+{"_msg":"xyz","@timestamp":"","x":"y"}`
+	f(data, timeField, msgField, rowsExpected, timestampsExpected, resultExpected)
+}
+
+func compressData(s string) string {
+	var bb bytes.Buffer
+	zw := gzip.NewWriter(&bb)
+	if _, err := zw.Write([]byte(s)); err != nil {
+		panic(fmt.Errorf("unexpected error when compressing data: %w", err))
+	}
+	if err := zw.Close(); err != nil {
+		panic(fmt.Errorf("unexpected error when closing gzip writer: %w", err))
+	}
+	return bb.String()
+}

app/vlinsert/elasticsearch/elasticsearch_timing_test.go

@@ -0,0 +1,50 @@
+package elasticsearch
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
+)
+
+func BenchmarkReadBulkRequest(b *testing.B) {
+	b.Run("gzip:off", func(b *testing.B) {
+		benchmarkReadBulkRequest(b, false)
+	})
+	b.Run("gzip:on", func(b *testing.B) {
+		benchmarkReadBulkRequest(b, true)
+	})
+}
+
+func benchmarkReadBulkRequest(b *testing.B, isGzip bool) {
+	data := `{"create":{"_index":"filebeat-8.8.0"}}
+{"@timestamp":"2023-06-06T04:48:11.735Z","log":{"offset":71770,"file":{"path":"/var/log/auth.log"}},"message":"foobar"}
+{"create":{"_index":"filebeat-8.8.0"}}
+{"@timestamp":"2023-06-06T04:48:12.735Z","message":"baz"}
+{"create":{"_index":"filebeat-8.8.0"}}
+{"message":"xyz","@timestamp":"2023-06-06T04:48:13.735Z","x":"y"}
+`
+	if isGzip {
+		data = compressData(data)
+	}
+	dataBytes := bytesutil.ToUnsafeBytes(data)
+
+	timeField := "@timestamp"
+	msgField := "message"
+	blp := &insertutils.BenchmarkLogMessageProcessor{}
+
+	b.ReportAllocs()
+	b.SetBytes(int64(len(data)))
+	b.RunParallel(func(pb *testing.PB) {
+		r := &bytes.Reader{}
+		for pb.Next() {
+			r.Reset(dataBytes)
+			_, err := readBulkRequest(r, isGzip, timeField, msgField, blp)
+			if err != nil {
+				panic(fmt.Errorf("unexpected error: %w", err))
+			}
+		}
+	})
+}

app/vlinsert/insertutils/common_params.go

@@ -0,0 +1,200 @@
+package insertutils
+
+import (
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/VictoriaMetrics/metrics"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httputils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/timeutil"
+)
+
+// CommonParams contains common HTTP parameters used by log ingestion APIs.
+//
+// See https://docs.victoriametrics.com/victorialogs/data-ingestion/#http-parameters
+type CommonParams struct {
+	TenantID     logstorage.TenantID
+	TimeField    string
+	MsgField     string
+	StreamFields []string
+	IgnoreFields []string
+
+	Debug           bool
+	DebugRequestURI string
+	DebugRemoteAddr string
+}
+
+// GetCommonParams returns CommonParams from r.
+func GetCommonParams(r *http.Request) (*CommonParams, error) {
+	// Extract tenantID
+	tenantID, err := logstorage.GetTenantIDFromRequest(r)
+	if err != nil {
+		return nil, err
+	}
+
+	// Extract time field name from _time_field query arg
+	var timeField = "_time"
+	if tf := r.FormValue("_time_field"); tf != "" {
+		timeField = tf
+	}
+
+	// Extract message field name from _msg_field query arg
+	var msgField = ""
+	if msgf := r.FormValue("_msg_field"); msgf != "" {
+		msgField = msgf
+	}
+
+	streamFields := httputils.GetArray(r, "_stream_fields")
+	ignoreFields := httputils.GetArray(r, "ignore_fields")
+
+	debug := httputils.GetBool(r, "debug")
+	debugRequestURI := ""
+	debugRemoteAddr := ""
+	if debug {
+		debugRequestURI = httpserver.GetRequestURI(r)
+		debugRemoteAddr = httpserver.GetQuotedRemoteAddr(r)
+	}
+
+	cp := &CommonParams{
+		TenantID:        tenantID,
+		TimeField:       timeField,
+		MsgField:        msgField,
+		StreamFields:    streamFields,
+		IgnoreFields:    ignoreFields,
+		Debug:           debug,
+		DebugRequestURI: debugRequestURI,
+		DebugRemoteAddr: debugRemoteAddr,
+	}
+	return cp, nil
+}
+
+// GetCommonParamsForSyslog returns common params needed for parsing syslog messages and storing them to the given tenantID.
+func GetCommonParamsForSyslog(tenantID logstorage.TenantID) *CommonParams {
+	// See https://docs.victoriametrics.com/victorialogs/logsql/#unpack_syslog-pipe
+	cp := &CommonParams{
+		TenantID:  tenantID,
+		TimeField: "timestamp",
+		MsgField:  "message",
+		StreamFields: []string{
+			"hostname",
+			"app_name",
+			"proc_id",
+		},
+	}
+
+	return cp
+}
+
+// LogMessageProcessor is an interface for log message processors.
+type LogMessageProcessor interface {
+	// AddRow must add row to the LogMessageProcessor with the given timestamp and the given fields.
+	//
+	// The LogMessageProcessor implementation cannot hold references to fields, since the caller can re-use them.
+	AddRow(timestamp int64, fields []logstorage.Field)
+
+	// MustClose() must flush all the remaining fields and free up resources occupied by LogMessageProcessor.
+	MustClose()
+}
+
+type logMessageProcessor struct {
+	mu            sync.Mutex
+	wg            sync.WaitGroup
+	stopCh        chan struct{}
+	lastFlushTime time.Time
+
+	cp *CommonParams
+	lr *logstorage.LogRows
+}
+
+func (lmp *logMessageProcessor) initPeriodicFlush() {
+	lmp.lastFlushTime = time.Now()
+
+	lmp.wg.Add(1)
+	go func() {
+		defer lmp.wg.Done()
+
+		d := timeutil.AddJitterToDuration(time.Second)
+		ticker := time.NewTicker(d)
+		defer ticker.Stop()
+
+		for {
+			select {
+			case <-lmp.stopCh:
+				return
+			case <-ticker.C:
+				lmp.mu.Lock()
+				if time.Since(lmp.lastFlushTime) >= d {
+					lmp.flushLocked()
+				}
+				lmp.mu.Unlock()
+			}
+		}
+	}()
+}
+
+// AddRow adds new log message to lmp with the given timestamp and fields.
+func (lmp *logMessageProcessor) AddRow(timestamp int64, fields []logstorage.Field) {
+	lmp.mu.Lock()
+	defer lmp.mu.Unlock()
+
+	if len(fields) > *MaxFieldsPerLine {
+		rf := logstorage.RowFormatter(fields)
+		logger.Warnf("dropping log line with %d fields; it exceeds -insert.maxFieldsPerLine=%d; %s", len(fields), *MaxFieldsPerLine, rf)
+		rowsDroppedTotalTooManyFields.Inc()
+		return
+	}
+
+	lmp.lr.MustAdd(lmp.cp.TenantID, timestamp, fields)
+	if lmp.cp.Debug {
+		s := lmp.lr.GetRowString(0)
+		lmp.lr.ResetKeepSettings()
+		logger.Infof("remoteAddr=%s; requestURI=%s; ignoring log entry because of `debug` query arg: %s", lmp.cp.DebugRemoteAddr, lmp.cp.DebugRequestURI, s)
+		rowsDroppedTotalDebug.Inc()
+		return
+	}
+	if lmp.lr.NeedFlush() {
+		lmp.flushLocked()
+	}
+}
+
+// flushLocked must be called under locked lmp.mu.
+func (lmp *logMessageProcessor) flushLocked() {
+	lmp.lastFlushTime = time.Now()
+	vlstorage.MustAddRows(lmp.lr)
+	lmp.lr.ResetKeepSettings()
+}
+
+// MustClose flushes the remaining data to the underlying storage and closes lmp.
+func (lmp *logMessageProcessor) MustClose() {
+	close(lmp.stopCh)
+	lmp.wg.Wait()
+
+	lmp.flushLocked()
+	logstorage.PutLogRows(lmp.lr)
+	lmp.lr = nil
+}
+
+// NewLogMessageProcessor returns new LogMessageProcessor for the given cp.
+//
+// MustClose() must be called on the returned LogMessageProcessor when it is no longer needed.
+func (cp *CommonParams) NewLogMessageProcessor() LogMessageProcessor {
+	lr := logstorage.GetLogRows(cp.StreamFields, cp.IgnoreFields)
+	lmp := &logMessageProcessor{
+		cp: cp,
+		lr: lr,
+
+		stopCh: make(chan struct{}),
+	}
+	lmp.initPeriodicFlush()
+
+	return lmp
+}
+
+var rowsDroppedTotalDebug = metrics.NewCounter(`vl_rows_dropped_total{reason="debug"}`)
+var rowsDroppedTotalTooManyFields = metrics.NewCounter(`vl_rows_dropped_total{reason="too_many_fields"}`)

app/vlinsert/insertutils/flags.go

@@ -0,0 +1,15 @@
+package insertutils
+
+import (
+	"flag"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
+)
+
+var (
+	// MaxLineSizeBytes is the maximum length of a single line for /insert/* handlers
+	MaxLineSizeBytes = flagutil.NewBytes("insert.maxLineSizeBytes", 256*1024, "The maximum size of a single line, which can be read by /insert/* handlers")
+
+	// MaxFieldsPerLine is the maximum number of fields per line for /insert/* handlers
+	MaxFieldsPerLine = flag.Int("insert.maxFieldsPerLine", 1000, "The maximum number of log fields per line, which can be read by /insert/* handlers")
+)

app/vlinsert/insertutils/testutils.go

@@ -0,0 +1,53 @@
+package insertutils
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+)
+
+// TestLogMessageProcessor implements LogMessageProcessor for testing.
+type TestLogMessageProcessor struct {
+	timestamps []int64
+	rows       []string
+}
+
+// AddRow adds row with the given timestamp and fields to tlp
+func (tlp *TestLogMessageProcessor) AddRow(timestamp int64, fields []logstorage.Field) {
+	tlp.timestamps = append(tlp.timestamps, timestamp)
+	tlp.rows = append(tlp.rows, string(logstorage.MarshalFieldsToJSON(nil, fields)))
+}
+
+// MustClose closes tlp.
+func (tlp *TestLogMessageProcessor) MustClose() {
+}
+
+// Verify verifies the number of rows, timestamps and results after AddRow calls.
+func (tlp *TestLogMessageProcessor) Verify(rowsExpected int, timestampsExpected []int64, resultExpected string) error {
+	result := strings.Join(tlp.rows, "\n")
+	if len(tlp.rows) != rowsExpected {
+		return fmt.Errorf("unexpected rows read; got %d; want %d;\nrows read:\n%s\nrows wanted\n%s", len(tlp.rows), rowsExpected, result, resultExpected)
+	}
+
+	if !reflect.DeepEqual(tlp.timestamps, timestampsExpected) {
+		return fmt.Errorf("unexpected timestamps;\ngot\n%d\nwant\n%d", tlp.timestamps, timestampsExpected)
+	}
+	if result != resultExpected {
+		return fmt.Errorf("unexpected result;\ngot\n%s\nwant\n%s", result, resultExpected)
+	}
+
+	return nil
+}
+
+// BenchmarkLogMessageProcessor implements LogMessageProcessor for benchmarks.
+type BenchmarkLogMessageProcessor struct{}
+
+// AddRow implements LogMessageProcessor interface.
+func (blp *BenchmarkLogMessageProcessor) AddRow(_ int64, _ []logstorage.Field) {
+}
+
+// MustClose implements LogMessageProcessor interface.
+func (blp *BenchmarkLogMessageProcessor) MustClose() {
+}

app/vlinsert/insertutils/timestamp.go

@@ -0,0 +1,33 @@
+package insertutils
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+)
+
+// ExtractTimestampRFC3339NanoFromFields extracts RFC3339 timestamp in nanoseconds from the field with the name timeField at fields.
+//
+// The value for the timeField is set to empty string after returning from the function,
+// so it could be ignored during data ingestion.
+//
+// The current timestamp is returned if fields do not contain a field with timeField name or if the timeField value is empty.
+func ExtractTimestampRFC3339NanoFromFields(timeField string, fields []logstorage.Field) (int64, error) {
+	for i := range fields {
+		f := &fields[i]
+		if f.Name != timeField {
+			continue
+		}
+		if f.Value == "" || f.Value == "0" {
+			return time.Now().UnixNano(), nil
+		}
+		nsecs, ok := logstorage.TryParseTimestampRFC3339Nano(f.Value)
+		if !ok {
+			return 0, fmt.Errorf("cannot unmarshal rfc3339 timestamp from %s=%q", timeField, f.Value)
+		}
+		f.Value = ""
+		return nsecs, nil
+	}
+	return time.Now().UnixNano(), nil
+}

app/vlinsert/insertutils/timestamp_test.go

@@ -0,0 +1,75 @@
+package insertutils
+
+import (
+	"testing"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+)
+
+func TestExtractTimestampRFC3339NanoFromFields_Success(t *testing.T) {
+	f := func(timeField string, fields []logstorage.Field, nsecsExpected int64) {
+		t.Helper()
+
+		nsecs, err := ExtractTimestampRFC3339NanoFromFields(timeField, fields)
+		if err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		if nsecs != nsecsExpected {
+			t.Fatalf("unexpected nsecs; got %d; want %d", nsecs, nsecsExpected)
+		}
+
+		for _, f := range fields {
+			if f.Name == timeField {
+				if f.Value != "" {
+					t.Fatalf("unexpected value for field %s; got %q; want %q", timeField, f.Value, "")
+				}
+			}
+		}
+	}
+
+	f("time", []logstorage.Field{
+		{Name: "foo", Value: "bar"},
+		{Name: "time", Value: "2024-06-18T23:37:20Z"},
+	}, 1718753840000000000)
+
+	f("time", []logstorage.Field{
+		{Name: "foo", Value: "bar"},
+		{Name: "time", Value: "2024-06-18T23:37:20+08:00"},
+	}, 1718725040000000000)
+
+	f("time", []logstorage.Field{
+		{Name: "foo", Value: "bar"},
+		{Name: "time", Value: "2024-06-18T23:37:20.123-05:30"},
+	}, 1718773640123000000)
+
+	f("time", []logstorage.Field{
+		{Name: "time", Value: "2024-06-18T23:37:20.123456789-05:30"},
+		{Name: "foo", Value: "bar"},
+	}, 1718773640123456789)
+}
+
+func TestExtractTimestampRFC3339NanoFromFields_Error(t *testing.T) {
+	f := func(s string) {
+		t.Helper()
+
+		fields := []logstorage.Field{
+			{Name: "time", Value: s},
+		}
+		nsecs, err := ExtractTimestampRFC3339NanoFromFields("time", fields)
+		if err == nil {
+			t.Fatalf("expecting non-nil error")
+		}
+		if nsecs != 0 {
+			t.Fatalf("unexpected nsecs; got %d; want %d", nsecs, 0)
+		}
+	}
+
+	f("foobar")
+
+	// no Z at the end
+	f("2024-06-18T23:37:20")
+
+	// incomplete time
+	f("2024-06-18")
+	f("2024-06-18T23:37")
+}

app/vlinsert/jsonline/jsonline.go

@@ -0,0 +1,135 @@
+package jsonline
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
+	"github.com/VictoriaMetrics/metrics"
+)
+
+// RequestHandler processes jsonline insert requests
+func RequestHandler(w http.ResponseWriter, r *http.Request) {
+	startTime := time.Now()
+	w.Header().Add("Content-Type", "application/json")
+
+	if r.Method != "POST" {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	requestsTotal.Inc()
+
+	cp, err := insertutils.GetCommonParams(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	if err := vlstorage.CanWriteData(); err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	reader := r.Body
+	if r.Header.Get("Content-Encoding") == "gzip" {
+		zr, err := common.GetGzipReader(reader)
+		if err != nil {
+			logger.Errorf("cannot read gzipped jsonline request: %s", err)
+			return
+		}
+		defer common.PutGzipReader(zr)
+		reader = zr
+	}
+
+	lmp := cp.NewLogMessageProcessor()
+	err = processStreamInternal(reader, cp.TimeField, cp.MsgField, lmp)
+	lmp.MustClose()
+
+	if err != nil {
+		logger.Errorf("jsonline: %s", err)
+	} else {
+		// update requestDuration only for successfully parsed requests.
+		// There is no need in updating requestDuration for request errors,
+		// since their timings are usually much smaller than the timing for successful request parsing.
+		requestDuration.UpdateDuration(startTime)
+	}
+}
+
+func processStreamInternal(r io.Reader, timeField, msgField string, lmp insertutils.LogMessageProcessor) error {
+	wcr := writeconcurrencylimiter.GetReader(r)
+	defer writeconcurrencylimiter.PutReader(wcr)
+
+	lb := lineBufferPool.Get()
+	defer lineBufferPool.Put(lb)
+
+	lb.B = bytesutil.ResizeNoCopyNoOverallocate(lb.B, insertutils.MaxLineSizeBytes.IntN())
+	sc := bufio.NewScanner(wcr)
+	sc.Buffer(lb.B, len(lb.B))
+
+	n := 0
+	for {
+		ok, err := readLine(sc, timeField, msgField, lmp)
+		wcr.DecConcurrency()
+		if err != nil {
+			errorsTotal.Inc()
+			return fmt.Errorf("cannot read line #%d in /jsonline request: %s", n, err)
+		}
+		if !ok {
+			return nil
+		}
+		n++
+		rowsIngestedTotal.Inc()
+	}
+}
+
+func readLine(sc *bufio.Scanner, timeField, msgField string, lmp insertutils.LogMessageProcessor) (bool, error) {
+	var line []byte
+	for len(line) == 0 {
+		if !sc.Scan() {
+			if err := sc.Err(); err != nil {
+				if errors.Is(err, bufio.ErrTooLong) {
+					return false, fmt.Errorf(`cannot read json line, since its size exceeds -insert.maxLineSizeBytes=%d`, insertutils.MaxLineSizeBytes.IntN())
+				}
+				return false, err
+			}
+			return false, nil
+		}
+		line = sc.Bytes()
+	}
+
+	p := logstorage.GetJSONParser()
+	if err := p.ParseLogMessage(line); err != nil {
+		return false, fmt.Errorf("cannot parse json-encoded log entry: %w", err)
+	}
+	ts, err := insertutils.ExtractTimestampRFC3339NanoFromFields(timeField, p.Fields)
+	if err != nil {
+		return false, fmt.Errorf("cannot get timestamp: %w", err)
+	}
+	logstorage.RenameField(p.Fields, msgField, "_msg")
+	lmp.AddRow(ts, p.Fields)
+	logstorage.PutJSONParser(p)
+
+	return true, nil
+}
+
+var lineBufferPool bytesutil.ByteBufferPool
+
+var (
+	rowsIngestedTotal = metrics.NewCounter(`vl_rows_ingested_total{type="jsonline"}`)
+
+	requestsTotal = metrics.NewCounter(`vl_http_requests_total{path="/insert/jsonline"}`)
+	errorsTotal   = metrics.NewCounter(`vl_http_errors_total{path="/insert/jsonline"}`)
+
+	requestDuration = metrics.NewHistogram(`vl_http_request_duration_seconds{path="/insert/jsonline"}`)
+)

app/vlinsert/jsonline/jsonline_test.go

@@ -0,0 +1,55 @@
+package jsonline
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+)
+
+func TestProcessStreamInternal_Success(t *testing.T) {
+	f := func(data, timeField, msgField string, rowsExpected int, timestampsExpected []int64, resultExpected string) {
+		t.Helper()
+
+		tlp := &insertutils.TestLogMessageProcessor{}
+		r := bytes.NewBufferString(data)
+		if err := processStreamInternal(r, timeField, msgField, tlp); err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+
+		if err := tlp.Verify(rowsExpected, timestampsExpected, resultExpected); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	data := `{"@timestamp":"2023-06-06T04:48:11.735Z","log":{"offset":71770,"file":{"path":"/var/log/auth.log"}},"message":"foobar"}
+{"@timestamp":"2023-06-06T04:48:12.735Z","message":"baz"}
+{"message":"xyz","@timestamp":"2023-06-06T04:48:13.735Z","x":"y"}
+`
+	timeField := "@timestamp"
+	msgField := "message"
+	rowsExpected := 3
+	timestampsExpected := []int64{1686026891735000000, 1686026892735000000, 1686026893735000000}
+	resultExpected := `{"@timestamp":"","log.offset":"71770","log.file.path":"/var/log/auth.log","_msg":"foobar"}
+{"@timestamp":"","_msg":"baz"}
+{"_msg":"xyz","@timestamp":"","x":"y"}`
+	f(data, timeField, msgField, rowsExpected, timestampsExpected, resultExpected)
+}
+
+func TestProcessStreamInternal_Failure(t *testing.T) {
+	f := func(data string) {
+		t.Helper()
+
+		tlp := &insertutils.TestLogMessageProcessor{}
+		r := bytes.NewBufferString(data)
+		if err := processStreamInternal(r, "time", "", tlp); err == nil {
+			t.Fatalf("expecting non-nil error")
+		}
+	}
+
+	// invalid json
+	f("foobar")
+
+	// invalid timestamp field
+	f(`{"time":"foobar"}`)
+}

app/vlinsert/loki/loki.go

@@ -0,0 +1,59 @@
+package loki
+
+import (
+	"net/http"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+)
+
+// RequestHandler processes Loki insert requests
+func RequestHandler(path string, w http.ResponseWriter, r *http.Request) bool {
+	switch path {
+	case "/api/v1/push":
+		handleInsert(r, w)
+		return true
+	case "/ready":
+		// See https://grafana.com/docs/loki/latest/api/#identify-ready-loki-instance
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte("ready"))
+		return true
+	default:
+		return false
+	}
+}
+
+// See https://grafana.com/docs/loki/latest/api/#push-log-entries-to-loki
+func handleInsert(r *http.Request, w http.ResponseWriter) {
+	contentType := r.Header.Get("Content-Type")
+	switch contentType {
+	case "application/json":
+		handleJSON(r, w)
+	default:
+		// Protobuf request body should be handled by default according to https://grafana.com/docs/loki/latest/api/#push-log-entries-to-loki
+		handleProtobuf(r, w)
+	}
+}
+
+func getCommonParams(r *http.Request) (*insertutils.CommonParams, error) {
+	cp, err := insertutils.GetCommonParams(r)
+	if err != nil {
+		return nil, err
+	}
+
+	// If parsed tenant is (0,0) it is likely to be default tenant
+	// Try parsing tenant from Loki headers
+	if cp.TenantID.AccountID == 0 && cp.TenantID.ProjectID == 0 {
+		org := r.Header.Get("X-Scope-OrgID")
+		if org != "" {
+			tenantID, err := logstorage.ParseTenantID(org)
+			if err != nil {
+				return nil, err
+			}
+			cp.TenantID = tenantID
+		}
+
+	}
+
+	return cp, nil
+}

app/vlinsert/loki/loki_json.go

@@ -0,0 +1,202 @@
+package loki
+
+import (
+	"fmt"
+	"io"
+	"math"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
+	"github.com/VictoriaMetrics/metrics"
+	"github.com/valyala/fastjson"
+)
+
+var parserPool fastjson.ParserPool
+
+func handleJSON(r *http.Request, w http.ResponseWriter) {
+	startTime := time.Now()
+	requestsJSONTotal.Inc()
+	reader := r.Body
+	if r.Header.Get("Content-Encoding") == "gzip" {
+		zr, err := common.GetGzipReader(reader)
+		if err != nil {
+			httpserver.Errorf(w, r, "cannot initialize gzip reader: %s", err)
+			return
+		}
+		defer common.PutGzipReader(zr)
+		reader = zr
+	}
+
+	wcr := writeconcurrencylimiter.GetReader(reader)
+	data, err := io.ReadAll(wcr)
+	writeconcurrencylimiter.PutReader(wcr)
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot read request body: %s", err)
+		return
+	}
+
+	cp, err := getCommonParams(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot parse common params from request: %s", err)
+		return
+	}
+	if err := vlstorage.CanWriteData(); err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	lmp := cp.NewLogMessageProcessor()
+	n, err := parseJSONRequest(data, lmp)
+	lmp.MustClose()
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot parse Loki json request: %s", err)
+		return
+	}
+
+	rowsIngestedJSONTotal.Add(n)
+
+	// update requestJSONDuration only for successfully parsed requests
+	// There is no need in updating requestJSONDuration for request errors,
+	// since their timings are usually much smaller than the timing for successful request parsing.
+	requestJSONDuration.UpdateDuration(startTime)
+}
+
+var (
+	requestsJSONTotal     = metrics.NewCounter(`vl_http_requests_total{path="/insert/loki/api/v1/push",format="json"}`)
+	rowsIngestedJSONTotal = metrics.NewCounter(`vl_rows_ingested_total{type="loki",format="json"}`)
+	requestJSONDuration   = metrics.NewHistogram(`vl_http_request_duration_seconds{path="/insert/loki/api/v1/push",format="json"}`)
+)
+
+func parseJSONRequest(data []byte, lmp insertutils.LogMessageProcessor) (int, error) {
+	p := parserPool.Get()
+	defer parserPool.Put(p)
+	v, err := p.ParseBytes(data)
+	if err != nil {
+		return 0, fmt.Errorf("cannot parse JSON request body: %w", err)
+	}
+
+	streamsV := v.Get("streams")
+	if streamsV == nil {
+		return 0, fmt.Errorf("missing `streams` item in the parsed JSON: %q", v)
+	}
+	streams, err := streamsV.Array()
+	if err != nil {
+		return 0, fmt.Errorf("`streams` item in the parsed JSON must contain an array; got %q", streamsV)
+	}
+
+	currentTimestamp := time.Now().UnixNano()
+	var commonFields []logstorage.Field
+	rowsIngested := 0
+	for _, stream := range streams {
+		// populate common labels from `stream` dict
+		commonFields = commonFields[:0]
+		labelsV := stream.Get("stream")
+		var labels *fastjson.Object
+		if labelsV != nil {
+			o, err := labelsV.Object()
+			if err != nil {
+				return rowsIngested, fmt.Errorf("`stream` item in the parsed JSON must contain an object; got %q", labelsV)
+			}
+			labels = o
+		}
+		labels.Visit(func(k []byte, v *fastjson.Value) {
+			if err != nil {
+				return
+			}
+			vStr, errLocal := v.StringBytes()
+			if errLocal != nil {
+				err = fmt.Errorf("unexpected label value type for %q:%q; want string", k, v)
+				return
+			}
+			commonFields = append(commonFields, logstorage.Field{
+				Name:  bytesutil.ToUnsafeString(k),
+				Value: bytesutil.ToUnsafeString(vStr),
+			})
+		})
+		if err != nil {
+			return rowsIngested, fmt.Errorf("error when parsing `stream` object: %w", err)
+		}
+
+		// populate messages from `values` array
+		linesV := stream.Get("values")
+		if linesV == nil {
+			return rowsIngested, fmt.Errorf("missing `values` item in the parsed JSON %q", stream)
+		}
+		lines, err := linesV.Array()
+		if err != nil {
+			return rowsIngested, fmt.Errorf("`values` item in the parsed JSON must contain an array; got %q", linesV)
+		}
+
+		fields := commonFields
+		for _, line := range lines {
+			lineA, err := line.Array()
+			if err != nil {
+				return rowsIngested, fmt.Errorf("unexpected contents of `values` item; want array; got %q", line)
+			}
+			if len(lineA) != 2 {
+				return rowsIngested, fmt.Errorf("unexpected number of values in `values` item array %q; got %d want 2", line, len(lineA))
+			}
+
+			// parse timestamp
+			timestamp, err := lineA[0].StringBytes()
+			if err != nil {
+				return rowsIngested, fmt.Errorf("unexpected log timestamp type for %q; want string", lineA[0])
+			}
+			ts, err := parseLokiTimestamp(bytesutil.ToUnsafeString(timestamp))
+			if err != nil {
+				return rowsIngested, fmt.Errorf("cannot parse log timestamp %q: %w", timestamp, err)
+			}
+			if ts == 0 {
+				ts = currentTimestamp
+			}
+
+			// parse log message
+			msg, err := lineA[1].StringBytes()
+			if err != nil {
+				return rowsIngested, fmt.Errorf("unexpected log message type for %q; want string", lineA[1])
+			}
+
+			fields = append(fields[:len(commonFields)], logstorage.Field{
+				Name:  "_msg",
+				Value: bytesutil.ToUnsafeString(msg),
+			})
+			lmp.AddRow(ts, fields)
+		}
+		rowsIngested += len(lines)
+	}
+
+	return rowsIngested, nil
+}
+
+func parseLokiTimestamp(s string) (int64, error) {
+	if s == "" {
+		// Special case - an empty timestamp must be substituted with the current time by the caller.
+		return 0, nil
+	}
+	n, err := strconv.ParseInt(s, 10, 64)
+	if err != nil {
+		// Fall back to parsing floating-point value
+		f, err := strconv.ParseFloat(s, 64)
+		if err != nil {
+			return 0, err
+		}
+		if f > math.MaxInt64 {
+			return 0, fmt.Errorf("too big timestamp in nanoseconds: %v; mustn't exceed %v", f, int64(math.MaxInt64))
+		}
+		if f < math.MinInt64 {
+			return 0, fmt.Errorf("too small timestamp in nanoseconds: %v; must be bigger or equal to %v", f, int64(math.MinInt64))
+		}
+		n = int64(f)
+	}
+	if n < 0 {
+		return 0, fmt.Errorf("too small timestamp in nanoseconds: %d; must be bigger than 0", n)
+	}
+	return n, nil
+}

app/vlinsert/loki/loki_json_test.go

@@ -0,0 +1,119 @@
+package loki
+
+import (
+	"testing"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+)
+
+func TestParseJSONRequest_Failure(t *testing.T) {
+	f := func(s string) {
+		t.Helper()
+
+		tlp := &insertutils.TestLogMessageProcessor{}
+		n, err := parseJSONRequest([]byte(s), tlp)
+		if err == nil {
+			t.Fatalf("expecting non-nil error")
+		}
+		if n != 0 {
+			t.Fatalf("unexpected number of parsed lines: %d; want 0", n)
+		}
+	}
+	f(``)
+
+	// Invalid json
+	f(`{}`)
+	f(`[]`)
+	f(`"foo"`)
+	f(`123`)
+
+	// invalid type for `streams` item
+	f(`{"streams":123}`)
+
+	// Missing `values` item
+	f(`{"streams":[{}]}`)
+
+	// Invalid type for `values` item
+	f(`{"streams":[{"values":"foobar"}]}`)
+
+	// Invalid type for `stream` item
+	f(`{"streams":[{"stream":[],"values":[]}]}`)
+
+	// Invalid type for `values` individual item
+	f(`{"streams":[{"values":[123]}]}`)
+
+	// Invalid length of `values` individual item
+	f(`{"streams":[{"values":[[]]}]}`)
+	f(`{"streams":[{"values":[["123"]]}]}`)
+	f(`{"streams":[{"values":[["123","456","789"]]}]}`)
+
+	// Invalid type for timestamp inside `values` individual item
+	f(`{"streams":[{"values":[[123,"456"]}]}`)
+
+	// Invalid type for log message
+	f(`{"streams":[{"values":[["123",1234]]}]}`)
+}
+
+func TestParseJSONRequest_Success(t *testing.T) {
+	f := func(s string, timestampsExpected []int64, resultExpected string) {
+		t.Helper()
+
+		tlp := &insertutils.TestLogMessageProcessor{}
+
+		n, err := parseJSONRequest([]byte(s), tlp)
+		if err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		if err := tlp.Verify(n, timestampsExpected, resultExpected); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	// Empty streams
+	f(`{"streams":[]}`, nil, ``)
+	f(`{"streams":[{"values":[]}]}`, nil, ``)
+	f(`{"streams":[{"stream":{},"values":[]}]}`, nil, ``)
+	f(`{"streams":[{"stream":{"foo":"bar"},"values":[]}]}`, nil, ``)
+
+	// Empty stream labels
+	f(`{"streams":[{"values":[["1577836800000000001", "foo bar"]]}]}`, []int64{1577836800000000001}, `{"_msg":"foo bar"}`)
+	f(`{"streams":[{"stream":{},"values":[["1577836800000000001", "foo bar"]]}]}`, []int64{1577836800000000001}, `{"_msg":"foo bar"}`)
+
+	// Non-empty stream labels
+	f(`{"streams":[{"stream":{
+	"label1": "value1",
+	"label2": "value2"
+},"values":[
+	["1577836800000000001", "foo bar"],
+	["1477836900005000002", "abc"],
+	["147.78369e9", "foobar"]
+]}]}`, []int64{1577836800000000001, 1477836900005000002, 147783690000}, `{"label1":"value1","label2":"value2","_msg":"foo bar"}
+{"label1":"value1","label2":"value2","_msg":"abc"}
+{"label1":"value1","label2":"value2","_msg":"foobar"}`)
+
+	// Multiple streams
+	f(`{
+	"streams": [
+		{
+			"stream": {
+				"foo": "bar",
+				"a": "b"
+			},
+			"values": [
+				["1577836800000000001", "foo bar"],
+				["1577836900005000002", "abc"]
+			]
+		},
+		{
+			"stream": {
+				"x": "y"
+			},
+			"values": [
+				["1877836900005000002", "yx"]
+			]
+		}
+	]
+}`, []int64{1577836800000000001, 1577836900005000002, 1877836900005000002}, `{"foo":"bar","a":"b","_msg":"foo bar"}
+{"foo":"bar","a":"b","_msg":"abc"}
+{"x":"y","_msg":"yx"}`)
+}

app/vlinsert/loki/loki_json_timing_test.go

@@ -0,0 +1,79 @@
+package loki
+
+import (
+	"fmt"
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+)
+
+func BenchmarkParseJSONRequest(b *testing.B) {
+	for _, streams := range []int{5, 10} {
+		for _, rows := range []int{100, 1000} {
+			for _, labels := range []int{10, 50} {
+				b.Run(fmt.Sprintf("streams_%d/rows_%d/labels_%d", streams, rows, labels), func(b *testing.B) {
+					benchmarkParseJSONRequest(b, streams, rows, labels)
+				})
+			}
+		}
+	}
+}
+
+func benchmarkParseJSONRequest(b *testing.B, streams, rows, labels int) {
+	blp := &insertutils.BenchmarkLogMessageProcessor{}
+	b.ReportAllocs()
+	b.SetBytes(int64(streams * rows))
+	b.RunParallel(func(pb *testing.PB) {
+		data := getJSONBody(streams, rows, labels)
+		for pb.Next() {
+			_, err := parseJSONRequest(data, blp)
+			if err != nil {
+				panic(fmt.Errorf("unexpected error: %w", err))
+			}
+		}
+	})
+}
+
+func getJSONBody(streams, rows, labels int) []byte {
+	body := append([]byte{}, `{"streams":[`...)
+	now := time.Now().UnixNano()
+	valuePrefix := fmt.Sprintf(`["%d","value_`, now)
+
+	for i := 0; i < streams; i++ {
+		body = append(body, `{"stream":{`...)
+
+		for j := 0; j < labels; j++ {
+			body = append(body, `"label_`...)
+			body = strconv.AppendInt(body, int64(j), 10)
+			body = append(body, `":"value_`...)
+			body = strconv.AppendInt(body, int64(j), 10)
+			body = append(body, '"')
+			if j < labels-1 {
+				body = append(body, ',')
+			}
+
+		}
+		body = append(body, `}, "values":[`...)
+
+		for j := 0; j < rows; j++ {
+			body = append(body, valuePrefix...)
+			body = strconv.AppendInt(body, int64(j), 10)
+			body = append(body, `"]`...)
+			if j < rows-1 {
+				body = append(body, ',')
+			}
+		}
+
+		body = append(body, `]}`...)
+		if i < streams-1 {
+			body = append(body, ',')
+		}
+
+	}
+
+	body = append(body, `]}`...)
+
+	return body
+}

app/vlinsert/loki/loki_protobuf.go

@@ -0,0 +1,218 @@
+package loki
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
+	"github.com/VictoriaMetrics/metrics"
+	"github.com/golang/snappy"
+)
+
+var (
+	bytesBufPool bytesutil.ByteBufferPool
+	pushReqsPool sync.Pool
+)
+
+func handleProtobuf(r *http.Request, w http.ResponseWriter) {
+	startTime := time.Now()
+	requestsProtobufTotal.Inc()
+	wcr := writeconcurrencylimiter.GetReader(r.Body)
+	data, err := io.ReadAll(wcr)
+	writeconcurrencylimiter.PutReader(wcr)
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot read request body: %s", err)
+		return
+	}
+
+	cp, err := getCommonParams(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot parse common params from request: %s", err)
+		return
+	}
+	if err := vlstorage.CanWriteData(); err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	lmp := cp.NewLogMessageProcessor()
+	n, err := parseProtobufRequest(data, lmp)
+	lmp.MustClose()
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot parse Loki protobuf request: %s", err)
+		return
+	}
+
+	rowsIngestedProtobufTotal.Add(n)
+
+	// update requestProtobufDuration only for successfully parsed requests
+	// There is no need in updating requestProtobufDuration for request errors,
+	// since their timings are usually much smaller than the timing for successful request parsing.
+	requestProtobufDuration.UpdateDuration(startTime)
+}
+
+var (
+	requestsProtobufTotal     = metrics.NewCounter(`vl_http_requests_total{path="/insert/loki/api/v1/push",format="protobuf"}`)
+	rowsIngestedProtobufTotal = metrics.NewCounter(`vl_rows_ingested_total{type="loki",format="protobuf"}`)
+	requestProtobufDuration   = metrics.NewHistogram(`vl_http_request_duration_seconds{path="/insert/loki/api/v1/push",format="protobuf"}`)
+)
+
+func parseProtobufRequest(data []byte, lmp insertutils.LogMessageProcessor) (int, error) {
+	bb := bytesBufPool.Get()
+	defer bytesBufPool.Put(bb)
+
+	buf, err := snappy.Decode(bb.B[:cap(bb.B)], data)
+	if err != nil {
+		return 0, fmt.Errorf("cannot decode snappy-encoded request body: %w", err)
+	}
+	bb.B = buf
+
+	req := getPushRequest()
+	defer putPushRequest(req)
+
+	err = req.UnmarshalProtobuf(bb.B)
+	if err != nil {
+		return 0, fmt.Errorf("cannot parse request body: %w", err)
+	}
+
+	fields := getFields()
+	defer putFields(fields)
+
+	rowsIngested := 0
+	streams := req.Streams
+	currentTimestamp := time.Now().UnixNano()
+	for i := range streams {
+		stream := &streams[i]
+		// st.Labels contains labels for the stream.
+		// Labels are same for all entries in the stream.
+		fields.fields, err = parsePromLabels(fields.fields[:0], stream.Labels)
+		if err != nil {
+			return rowsIngested, fmt.Errorf("cannot parse stream labels %q: %w", stream.Labels, err)
+		}
+		commonFieldsLen := len(fields.fields)
+
+		entries := stream.Entries
+		for j := range entries {
+			e := &entries[j]
+			fields.fields = fields.fields[:commonFieldsLen]
+
+			for _, lp := range e.StructuredMetadata {
+				fields.fields = append(fields.fields, logstorage.Field{
+					Name:  lp.Name,
+					Value: lp.Value,
+				})
+			}
+
+			fields.fields = append(fields.fields, logstorage.Field{
+				Name:  "_msg",
+				Value: e.Line,
+			})
+
+			ts := e.Timestamp.UnixNano()
+			if ts == 0 {
+				ts = currentTimestamp
+			}
+
+			lmp.AddRow(ts, fields.fields)
+		}
+		rowsIngested += len(stream.Entries)
+	}
+	return rowsIngested, nil
+}
+
+func getFields() *fields {
+	v := fieldsPool.Get()
+	if v == nil {
+		return &fields{}
+	}
+	return v.(*fields)
+}
+
+func putFields(f *fields) {
+	f.fields = f.fields[:0]
+	fieldsPool.Put(f)
+}
+
+var fieldsPool sync.Pool
+
+type fields struct {
+	fields []logstorage.Field
+}
+
+// parsePromLabels parses log fields in Prometheus text exposition format from s, appends them to dst and returns the result.
+//
+// See test data of promtail for examples: https://github.com/grafana/loki/blob/a24ef7b206e0ca63ee74ca6ecb0a09b745cd2258/pkg/push/types_test.go
+func parsePromLabels(dst []logstorage.Field, s string) ([]logstorage.Field, error) {
+	// Make sure s is wrapped into `{...}`
+	s = strings.TrimSpace(s)
+	if len(s) < 2 {
+		return nil, fmt.Errorf("too short string to parse: %q", s)
+	}
+	if s[0] != '{' {
+		return nil, fmt.Errorf("missing `{` at the beginning of %q", s)
+	}
+	if s[len(s)-1] != '}' {
+		return nil, fmt.Errorf("missing `}` at the end of %q", s)
+	}
+	s = s[1 : len(s)-1]
+
+	for len(s) > 0 {
+		// Parse label name
+		n := strings.IndexByte(s, '=')
+		if n < 0 {
+			return nil, fmt.Errorf("cannot find `=` char for label value at %s", s)
+		}
+		name := s[:n]
+		s = s[n+1:]
+
+		// Parse label value
+		qs, err := strconv.QuotedPrefix(s)
+		if err != nil {
+			return nil, fmt.Errorf("cannot parse value for label %q at %s: %w", name, s, err)
+		}
+		s = s[len(qs):]
+		value, err := strconv.Unquote(qs)
+		if err != nil {
+			return nil, fmt.Errorf("cannot unquote value %q for label %q: %w", qs, name, err)
+		}
+
+		// Append the found field to dst.
+		dst = append(dst, logstorage.Field{
+			Name:  name,
+			Value: value,
+		})
+
+		// Check whether there are other labels remaining
+		if len(s) == 0 {
+			break
+		}
+		if !strings.HasPrefix(s, ",") {
+			return nil, fmt.Errorf("missing `,` char at %s", s)
+		}
+		s = s[1:]
+		s = strings.TrimPrefix(s, " ")
+	}
+	return dst, nil
+}
+
+func getPushRequest() *PushRequest {
+	v := pushReqsPool.Get()
+	if v == nil {
+		return &PushRequest{}
+	}
+	return v.(*PushRequest)
+}
+
+func putPushRequest(req *PushRequest) {
+	req.reset()
+	pushReqsPool.Put(req)
+}

app/vlinsert/loki/loki_protobuf_test.go

@@ -0,0 +1,168 @@
+package loki
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+	"github.com/golang/snappy"
+)
+
+type testLogMessageProcessor struct {
+	pr PushRequest
+}
+
+func (tlp *testLogMessageProcessor) AddRow(timestamp int64, fields []logstorage.Field) {
+	msg := ""
+	for _, f := range fields {
+		if f.Name == "_msg" {
+			msg = f.Value
+		}
+	}
+	var a []string
+	for _, f := range fields {
+		if f.Name == "_msg" {
+			continue
+		}
+		item := fmt.Sprintf("%s=%q", f.Name, f.Value)
+		a = append(a, item)
+	}
+	labels := "{" + strings.Join(a, ", ") + "}"
+	tlp.pr.Streams = append(tlp.pr.Streams, Stream{
+		Labels: labels,
+		Entries: []Entry{
+			{
+				Timestamp: time.Unix(0, timestamp),
+				Line:      strings.Clone(msg),
+			},
+		},
+	})
+}
+
+func (tlp *testLogMessageProcessor) MustClose() {
+}
+
+func TestParseProtobufRequest_Success(t *testing.T) {
+	f := func(s string, timestampsExpected []int64, resultExpected string) {
+		t.Helper()
+
+		tlp := &testLogMessageProcessor{}
+		n, err := parseJSONRequest([]byte(s), tlp)
+		if err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		if n != len(tlp.pr.Streams) {
+			t.Fatalf("unexpected number of streams; got %d; want %d", len(tlp.pr.Streams), n)
+		}
+
+		data := tlp.pr.MarshalProtobuf(nil)
+		encodedData := snappy.Encode(nil, data)
+
+		tlp2 := &insertutils.TestLogMessageProcessor{}
+		n, err = parseProtobufRequest(encodedData, tlp2)
+		if err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		if err := tlp2.Verify(n, timestampsExpected, resultExpected); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	// Empty streams
+	f(`{"streams":[]}`, nil, ``)
+	f(`{"streams":[{"values":[]}]}`, nil, ``)
+	f(`{"streams":[{"stream":{},"values":[]}]}`, nil, ``)
+	f(`{"streams":[{"stream":{"foo":"bar"},"values":[]}]}`, nil, ``)
+
+	// Empty stream labels
+	f(`{"streams":[{"values":[["1577836800000000001", "foo bar"]]}]}`, []int64{1577836800000000001}, `{"_msg":"foo bar"}`)
+	f(`{"streams":[{"stream":{},"values":[["1577836800000000001", "foo bar"]]}]}`, []int64{1577836800000000001}, `{"_msg":"foo bar"}`)
+
+	// Non-empty stream labels
+	f(`{"streams":[{"stream":{
+	"label1": "value1",
+	"label2": "value2"
+},"values":[
+	["1577836800000000001", "foo bar"],
+	["1477836900005000002", "abc"],
+	["147.78369e9", "foobar"]
+]}]}`, []int64{1577836800000000001, 1477836900005000002, 147783690000}, `{"label1":"value1","label2":"value2","_msg":"foo bar"}
+{"label1":"value1","label2":"value2","_msg":"abc"}
+{"label1":"value1","label2":"value2","_msg":"foobar"}`)
+
+	// Multiple streams
+	f(`{
+	"streams": [
+		{
+			"stream": {
+				"foo": "bar",
+				"a": "b"
+			},
+			"values": [
+				["1577836800000000001", "foo bar"],
+				["1577836900005000002", "abc"]
+			]
+		},
+		{
+			"stream": {
+				"x": "y"
+			},
+			"values": [
+				["1877836900005000002", "yx"]
+			]
+		}
+	]
+}`, []int64{1577836800000000001, 1577836900005000002, 1877836900005000002}, `{"foo":"bar","a":"b","_msg":"foo bar"}
+{"foo":"bar","a":"b","_msg":"abc"}
+{"x":"y","_msg":"yx"}`)
+}
+
+func TestParsePromLabels_Success(t *testing.T) {
+	f := func(s string) {
+		t.Helper()
+		fields, err := parsePromLabels(nil, s)
+		if err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+
+		var a []string
+		for _, f := range fields {
+			a = append(a, fmt.Sprintf("%s=%q", f.Name, f.Value))
+		}
+		result := "{" + strings.Join(a, ", ") + "}"
+		if result != s {
+			t.Fatalf("unexpected result;\ngot\n%s\nwant\n%s", result, s)
+		}
+	}
+
+	f("{}")
+	f(`{foo="bar"}`)
+	f(`{foo="bar", baz="x", y="z"}`)
+	f(`{foo="ba\"r\\z\n", a="", b="\"\\"}`)
+}
+
+func TestParsePromLabels_Failure(t *testing.T) {
+	f := func(s string) {
+		t.Helper()
+		fields, err := parsePromLabels(nil, s)
+		if err == nil {
+			t.Fatalf("expecting non-nil error")
+		}
+		if len(fields) > 0 {
+			t.Fatalf("unexpected non-empty fields: %s", fields)
+		}
+	}
+
+	f("")
+	f("{")
+	f(`{foo}`)
+	f(`{foo=bar}`)
+	f(`{foo="bar}`)
+	f(`{foo="ba\",r}`)
+	f(`{foo="bar" baz="aa"}`)
+	f(`foobar`)
+	f(`foo{bar="baz"}`)
+}

app/vlinsert/loki/loki_protobuf_timing_test.go

@@ -0,0 +1,86 @@
+package loki
+
+import (
+	"fmt"
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/golang/snappy"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
+)
+
+func BenchmarkParseProtobufRequest(b *testing.B) {
+	for _, streams := range []int{5, 10} {
+		for _, rows := range []int{100, 1000} {
+			for _, labels := range []int{10, 50} {
+				b.Run(fmt.Sprintf("streams_%d/rows_%d/labels_%d", streams, rows, labels), func(b *testing.B) {
+					benchmarkParseProtobufRequest(b, streams, rows, labels)
+				})
+			}
+		}
+	}
+}
+
+func benchmarkParseProtobufRequest(b *testing.B, streams, rows, labels int) {
+	blp := &insertutils.BenchmarkLogMessageProcessor{}
+	b.ReportAllocs()
+	b.SetBytes(int64(streams * rows))
+	b.RunParallel(func(pb *testing.PB) {
+		body := getProtobufBody(streams, rows, labels)
+		for pb.Next() {
+			_, err := parseProtobufRequest(body, blp)
+			if err != nil {
+				panic(fmt.Errorf("unexpected error: %w", err))
+			}
+		}
+	})
+}
+
+func getProtobufBody(streamsCount, rowsCount, labelsCount int) []byte {
+	var b []byte
+	var entries []Entry
+	streams := make([]Stream, streamsCount)
+	for i := range streams {
+		b = b[:0]
+		b = append(b, '{')
+		for j := 0; j < labelsCount; j++ {
+			b = append(b, "label_"...)
+			b = strconv.AppendInt(b, int64(j), 10)
+			b = append(b, `="value_`...)
+			b = strconv.AppendInt(b, int64(j), 10)
+			b = append(b, '"')
+			if j < labelsCount-1 {
+				b = append(b, ',')
+			}
+		}
+		b = append(b, '}')
+		labels := string(b)
+
+		var rowsBuf []byte
+		entriesLen := len(entries)
+		for j := 0; j < rowsCount; j++ {
+			rowsBufLen := len(rowsBuf)
+			rowsBuf = append(rowsBuf, "value_"...)
+			rowsBuf = strconv.AppendInt(rowsBuf, int64(j), 10)
+			entries = append(entries, Entry{
+				Timestamp: time.Now(),
+				Line:      bytesutil.ToUnsafeString(rowsBuf[rowsBufLen:]),
+			})
+		}
+
+		st := &streams[i]
+		st.Labels = labels
+		st.Entries = entries[entriesLen:]
+	}
+	pr := PushRequest{
+		Streams: streams,
+	}
+
+	body := pr.MarshalProtobuf(nil)
+	encodedBody := snappy.Encode(nil, body)
+
+	return encodedBody
+}

app/vlinsert/loki/pb.go

@@ -0,0 +1,302 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: push_request.proto
+// source: https://raw.githubusercontent.com/grafana/loki/main/pkg/push/push_request.proto
+// Licensed under the Apache License, Version 2.0 (the "License");
+// https://github.com/grafana/loki/blob/main/pkg/push/LICENSE
+
+package loki
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/VictoriaMetrics/easyproto"
+)
+
+var mp easyproto.MarshalerPool
+
+// PushRequest represents Loki PushRequest
+//
+// See https://github.com/grafana/loki/blob/4220737a52da7ab6c9346b12d5a5d7bedbcd641d/pkg/push/push.proto#L14C1-L14C20
+type PushRequest struct {
+	Streams []Stream
+
+	entriesBuf   []Entry
+	labelPairBuf []LabelPair
+}
+
+func (pr *PushRequest) reset() {
+	pr.Streams = pr.Streams[:0]
+
+	pr.entriesBuf = pr.entriesBuf[:0]
+	pr.labelPairBuf = pr.labelPairBuf[:0]
+}
+
+// UnmarshalProtobuf unmarshals pr from protobuf message at src.
+//
+// pr remains valid until src is modified.
+func (pr *PushRequest) UnmarshalProtobuf(src []byte) error {
+	pr.reset()
+	var err error
+	pr.entriesBuf, pr.labelPairBuf, err = pr.unmarshalProtobuf(pr.entriesBuf, pr.labelPairBuf, src)
+	return err
+}
+
+// MarshalProtobuf marshals r to protobuf message, appends it to dst and returns the result.
+func (pr *PushRequest) MarshalProtobuf(dst []byte) []byte {
+	m := mp.Get()
+	pr.marshalProtobuf(m.MessageMarshaler())
+	dst = m.Marshal(dst)
+	mp.Put(m)
+	return dst
+}
+
+func (pr *PushRequest) marshalProtobuf(mm *easyproto.MessageMarshaler) {
+	for _, s := range pr.Streams {
+		s.marshalProtobuf(mm.AppendMessage(1))
+	}
+}
+
+func (pr *PushRequest) unmarshalProtobuf(entriesBuf []Entry, labelPairBuf []LabelPair, src []byte) ([]Entry, []LabelPair, error) {
+	// message PushRequest {
+	//   repeated Stream streams = 1;
+	// }
+	var err error
+	var fc easyproto.FieldContext
+	for len(src) > 0 {
+		src, err = fc.NextField(src)
+		if err != nil {
+			return entriesBuf, labelPairBuf, fmt.Errorf("cannot read next field in PushRequest: %w", err)
+		}
+		switch fc.FieldNum {
+		case 1:
+			data, ok := fc.MessageData()
+			if !ok {
+				return entriesBuf, labelPairBuf, fmt.Errorf("cannot read Stream data")
+			}
+			pr.Streams = append(pr.Streams, Stream{})
+			s := &pr.Streams[len(pr.Streams)-1]
+			entriesBuf, labelPairBuf, err = s.unmarshalProtobuf(entriesBuf, labelPairBuf, data)
+			if err != nil {
+				return entriesBuf, labelPairBuf, fmt.Errorf("cannot unmarshal Stream: %w", err)
+			}
+		}
+	}
+	return entriesBuf, labelPairBuf, nil
+}
+
+// Stream represents Loki stream.
+//
+// See https://github.com/grafana/loki/blob/4220737a52da7ab6c9346b12d5a5d7bedbcd641d/pkg/push/push.proto#L23
+type Stream struct {
+	Labels  string
+	Entries []Entry
+}
+
+func (s *Stream) marshalProtobuf(mm *easyproto.MessageMarshaler) {
+	mm.AppendString(1, s.Labels)
+	for _, e := range s.Entries {
+		e.marshalProtobuf(mm.AppendMessage(2))
+	}
+}
+
+func (s *Stream) unmarshalProtobuf(entriesBuf []Entry, labelPairBuf []LabelPair, src []byte) ([]Entry, []LabelPair, error) {
+	// message Stream {
+	//   string labels = 1;
+	//   repeated Entry entries = 2;
+	// }
+	var err error
+	var fc easyproto.FieldContext
+	entriesBufLen := len(entriesBuf)
+	for len(src) > 0 {
+		src, err = fc.NextField(src)
+		if err != nil {
+			return entriesBuf, labelPairBuf, fmt.Errorf("cannot read next field in Stream: %w", err)
+		}
+		switch fc.FieldNum {
+		case 1:
+			labels, ok := fc.String()
+			if !ok {
+				return entriesBuf, labelPairBuf, fmt.Errorf("cannot read labels")
+			}
+			s.Labels = labels
+		case 2:
+			data, ok := fc.MessageData()
+			if !ok {
+				return entriesBuf, labelPairBuf, fmt.Errorf("cannot read Entry data")
+			}
+			entriesBuf = append(entriesBuf, Entry{})
+			e := &entriesBuf[len(entriesBuf)-1]
+			labelPairBuf, err = e.unmarshalProtobuf(labelPairBuf, data)
+			if err != nil {
+				return entriesBuf, labelPairBuf, fmt.Errorf("cannot unmarshal Entry: %w", err)
+			}
+		}
+	}
+	s.Entries = entriesBuf[entriesBufLen:]
+	return entriesBuf, labelPairBuf, nil
+}
+
+// Entry represents Loki entry.
+//
+// See https://github.com/grafana/loki/blob/4220737a52da7ab6c9346b12d5a5d7bedbcd641d/pkg/push/push.proto#L38
+type Entry struct {
+	Timestamp          time.Time
+	Line               string
+	StructuredMetadata []LabelPair
+}
+
+func (e *Entry) marshalProtobuf(mm *easyproto.MessageMarshaler) {
+	marshalTime(mm, 1, e.Timestamp)
+	mm.AppendString(2, e.Line)
+	for _, lp := range e.StructuredMetadata {
+		lp.marshalProtobuf(mm.AppendMessage(3))
+	}
+}
+
+func (e *Entry) unmarshalProtobuf(labelPairBuf []LabelPair, src []byte) ([]LabelPair, error) {
+	// message Entry {
+	//   Timestamp timestamp = 1;
+	//   string line = 2;
+	//   repeated LabelPair structuredMetadata = 3;
+	// }
+	var err error
+	var fc easyproto.FieldContext
+	labelPairBufLen := len(labelPairBuf)
+	for len(src) > 0 {
+		src, err = fc.NextField(src)
+		if err != nil {
+			return labelPairBuf, fmt.Errorf("cannot read next field in Entry: %w", err)
+		}
+		switch fc.FieldNum {
+		case 1:
+			data, ok := fc.MessageData()
+			if !ok {
+				return labelPairBuf, fmt.Errorf("cannot read Timestamp data")
+			}
+			timestamp, err := unmarshalTime(data)
+			if err != nil {
+				return labelPairBuf, fmt.Errorf("cannot unmarshal Timestamp: %w", err)
+			}
+			e.Timestamp = timestamp
+		case 2:
+			line, ok := fc.String()
+			if !ok {
+				return labelPairBuf, fmt.Errorf("cannot read Line")
+			}
+			e.Line = line
+		case 3:
+			data, ok := fc.MessageData()
+			if !ok {
+				return labelPairBuf, fmt.Errorf("cannot read StructuredMetadata")
+			}
+			labelPairBuf = append(labelPairBuf, LabelPair{})
+			lp := &labelPairBuf[len(labelPairBuf)-1]
+			if err := lp.unmarshalProtobuf(data); err != nil {
+				return labelPairBuf, fmt.Errorf("cannot unmarshal StructuredMetadata: %w", err)
+			}
+		}
+	}
+	e.StructuredMetadata = labelPairBuf[labelPairBufLen:]
+	return labelPairBuf, nil
+}
+
+// LabelPair represents Loki label pair.
+//
+// See https://github.com/grafana/loki/blob/4220737a52da7ab6c9346b12d5a5d7bedbcd641d/pkg/push/push.proto#L33
+type LabelPair struct {
+	Name  string
+	Value string
+}
+
+func (lp *LabelPair) marshalProtobuf(mm *easyproto.MessageMarshaler) {
+	mm.AppendString(1, lp.Name)
+	mm.AppendString(2, lp.Value)
+}
+
+func (lp *LabelPair) unmarshalProtobuf(src []byte) (err error) {
+	// message LabelPair {
+	//   string name = 1;
+	//   string value = 2;
+	// }
+	var fc easyproto.FieldContext
+	for len(src) > 0 {
+		src, err = fc.NextField(src)
+		if err != nil {
+			return fmt.Errorf("cannot read next field in LabelPair: %w", err)
+		}
+		switch fc.FieldNum {
+		case 1:
+			name, ok := fc.String()
+			if !ok {
+				return fmt.Errorf("cannot read name")
+			}
+			lp.Name = name
+		case 2:
+			value, ok := fc.String()
+			if !ok {
+				return fmt.Errorf("cannot unmarshal value")
+			}
+			lp.Value = value
+		}
+	}
+	return nil
+}
+
+func marshalTime(mm *easyproto.MessageMarshaler, fieldNum uint32, timestamp time.Time) {
+	nsecs := timestamp.UnixNano()
+	ts := Timestamp{
+		Seconds: nsecs / 1e9,
+		Nanos:   int32(nsecs % 1e9),
+	}
+	ts.marshalProtobuf(mm.AppendMessage(fieldNum))
+}
+
+func unmarshalTime(src []byte) (time.Time, error) {
+	var ts Timestamp
+	if err := ts.unmarshalProtobuf(src); err != nil {
+		return time.Time{}, err
+	}
+	timestamp := time.Unix(ts.Seconds, int64(ts.Nanos)).UTC()
+	return timestamp, nil
+}
+
+// Timestamp is protobuf well-known timestamp type.
+type Timestamp struct {
+	Seconds int64
+	Nanos   int32
+}
+
+func (ts *Timestamp) marshalProtobuf(mm *easyproto.MessageMarshaler) {
+	mm.AppendInt64(1, ts.Seconds)
+	mm.AppendInt32(2, ts.Nanos)
+}
+
+func (ts *Timestamp) unmarshalProtobuf(src []byte) (err error) {
+	// message Timestamp {
+	//   int64 seconds = 1;
+	//   int32 nanos = 2;
+	// }
+	var fc easyproto.FieldContext
+	for len(src) > 0 {
+		src, err = fc.NextField(src)
+		if err != nil {
+			return fmt.Errorf("cannot read next field in Timestamp: %w", err)
+		}
+		switch fc.FieldNum {
+		case 1:
+			seconds, ok := fc.Int64()
+			if !ok {
+				return fmt.Errorf("cannot read Seconds")
+			}
+			ts.Seconds = seconds
+		case 2:
+			nanos, ok := fc.Int32()
+			if !ok {
+				return fmt.Errorf("cannot read Nanos")
+			}
+			ts.Nanos = nanos
+		}
+	}
+	return nil
+}

app/vlinsert/main.go

@@ -0,0 +1,47 @@
+package vlinsert
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/elasticsearch"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/jsonline"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/loki"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/syslog"
+)
+
+// Init initializes vlinsert
+func Init() {
+	syslog.MustInit()
+}
+
+// Stop stops vlinsert
+func Stop() {
+	syslog.MustStop()
+}
+
+// RequestHandler handles insert requests for VictoriaLogs
+func RequestHandler(w http.ResponseWriter, r *http.Request) bool {
+	path := r.URL.Path
+	if !strings.HasPrefix(path, "/insert/") {
+		// Skip requests, which do not start with /insert/, since these aren't our requests.
+		return false
+	}
+	path = strings.TrimPrefix(path, "/insert")
+	path = strings.ReplaceAll(path, "//", "/")
+
+	if path == "/jsonline" {
+		jsonline.RequestHandler(w, r)
+		return true
+	}
+	switch {
+	case strings.HasPrefix(path, "/elasticsearch/"):
+		path = strings.TrimPrefix(path, "/elasticsearch")
+		return elasticsearch.RequestHandler(path, w, r)
+	case strings.HasPrefix(path, "/loki/"):
+		path = strings.TrimPrefix(path, "/loki")
+		return loki.RequestHandler(path, w, r)
+	default:
+		return false
+	}
+}

app/vlinsert/syslog/syslog.go

@@ -0,0 +1,531 @@
+package syslog
+
+import (
+	"bufio"
+	"crypto/tls"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/klauspost/compress/gzip"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/slicesutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
+	"github.com/VictoriaMetrics/metrics"
+)
+
+var (
+	syslogTimezone = flag.String("syslog.timezone", "Local", "Timezone to use when parsing timestamps in RFC3164 syslog messages. Timezone must be a valid IANA Time Zone. "+
+		"For example: America/New_York, Europe/Berlin, Etc/GMT+3 . See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
+
+	syslogTenantIDTCP = flagutil.NewArrayString("syslog.tenantID.tcp", "TenantID for logs ingested via the corresponding -syslog.listenAddr.tcp. "+
+		"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
+	syslogTenantIDUDP = flagutil.NewArrayString("syslog.tenantID.udp", "TenantID for logs ingested via the corresponding -syslog.listenAddr.udp. "+
+		"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
+
+	listenAddrTCP = flagutil.NewArrayString("syslog.listenAddr.tcp", "Comma-separated list of TCP addresses to listen to for Syslog messages. "+
+		"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
+	listenAddrUDP = flagutil.NewArrayString("syslog.listenAddr.udp", "Comma-separated list of UDP address to listen to for Syslog messages. "+
+		"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
+
+	tlsEnable = flagutil.NewArrayBool("syslog.tls", "Whether to enable TLS for receiving syslog messages at the corresponding -syslog.listenAddr.tcp. "+
+		"The corresponding -syslog.tlsCertFile and -syslog.tlsKeyFile must be set if -syslog.tls is set. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
+	tlsCertFile = flagutil.NewArrayString("syslog.tlsCertFile", "Path to file with TLS certificate for the corresponding -syslog.listenAddr.tcp if the corresponding -syslog.tls is set. "+
+		"Prefer ECDSA certs instead of RSA certs as RSA certs are slower. The provided certificate file is automatically re-read every second, so it can be dynamically updated. "+
+		"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
+	tlsKeyFile = flagutil.NewArrayString("syslog.tlsKeyFile", "Path to file with TLS key for the corresponding -syslog.listenAddr.tcp if the corresponding -syslog.tls is set. "+
+		"The provided key file is automatically re-read every second, so it can be dynamically updated. "+
+		"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
+	tlsCipherSuites = flagutil.NewArrayString("syslog.tlsCipherSuites", "Optional list of TLS cipher suites for -syslog.listenAddr.tcp if -syslog.tls is set. "+
+		"See the list of supported cipher suites at https://pkg.go.dev/crypto/tls#pkg-constants . "+
+		"See also https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
+	tlsMinVersion = flag.String("syslog.tlsMinVersion", "TLS13", "The minimum TLS version to use for -syslog.listenAddr.tcp if -syslog.tls is set. "+
+		"Supported values: TLS10, TLS11, TLS12, TLS13. "+
+		"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
+
+	compressMethodTCP = flagutil.NewArrayString("syslog.compressMethod.tcp", "Compression method for syslog messages received at the corresponding -syslog.listenAddr.tcp. "+
+		"Supported values: none, gzip, deflate. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#compression")
+	compressMethodUDP = flagutil.NewArrayString("syslog.compressMethod.udp", "Compression method for syslog messages received at the corresponding -syslog.listenAddr.udp. "+
+		"Supported values: none, gzip, deflate. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#compression")
+
+	useLocalTimestampTCP = flagutil.NewArrayBool("syslog.useLocalTimestamp.tcp", "Whether to use local timestamp instead of the original timestamp for the ingested syslog messages "+
+		"at the corresponding -syslog.listenAddr.tcp. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#log-timestamps")
+	useLocalTimestampUDP = flagutil.NewArrayBool("syslog.useLocalTimestamp.udp", "Whether to use local timestamp instead of the original timestamp for the ingested syslog messages "+
+		"at the corresponding -syslog.listenAddr.udp. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#log-timestamps")
+)
+
+// MustInit initializes syslog parser at the given -syslog.listenAddr.tcp and -syslog.listenAddr.udp ports
+//
+// This function must be called after flag.Parse().
+//
+// MustStop() must be called in order to free up resources occupied by the initialized syslog parser.
+func MustInit() {
+	if workersStopCh != nil {
+		logger.Panicf("BUG: MustInit() called twice without MustStop() call")
+	}
+	workersStopCh = make(chan struct{})
+
+	for argIdx, addr := range *listenAddrTCP {
+		workersWG.Add(1)
+		go func(addr string, argIdx int) {
+			runTCPListener(addr, argIdx)
+			workersWG.Done()
+		}(addr, argIdx)
+	}
+
+	for argIdx, addr := range *listenAddrUDP {
+		workersWG.Add(1)
+		go func(addr string, argIdx int) {
+			runUDPListener(addr, argIdx)
+			workersWG.Done()
+		}(addr, argIdx)
+	}
+
+	currentYear := time.Now().Year()
+	globalCurrentYear.Store(int64(currentYear))
+	workersWG.Add(1)
+	go func() {
+		ticker := time.NewTicker(time.Minute)
+		for {
+			select {
+			case <-workersStopCh:
+				ticker.Stop()
+				workersWG.Done()
+				return
+			case <-ticker.C:
+				currentYear := time.Now().Year()
+				globalCurrentYear.Store(int64(currentYear))
+			}
+		}
+	}()
+
+	if *syslogTimezone != "" {
+		tz, err := time.LoadLocation(*syslogTimezone)
+		if err != nil {
+			logger.Fatalf("cannot parse -syslog.timezone=%q: %s", *syslogTimezone, err)
+		}
+		globalTimezone = tz
+	} else {
+		globalTimezone = time.Local
+	}
+}
+
+var (
+	globalCurrentYear atomic.Int64
+	globalTimezone    *time.Location
+)
+
+var (
+	workersWG     sync.WaitGroup
+	workersStopCh chan struct{}
+)
+
+// MustStop stops syslog parser initialized via MustInit()
+func MustStop() {
+	close(workersStopCh)
+	workersWG.Wait()
+	workersStopCh = nil
+}
+
+func runUDPListener(addr string, argIdx int) {
+	ln, err := net.ListenPacket(netutil.GetUDPNetwork(), addr)
+	if err != nil {
+		logger.Fatalf("cannot start UDP syslog server at %q: %s", addr, err)
+	}
+
+	tenantIDStr := syslogTenantIDUDP.GetOptionalArg(argIdx)
+	tenantID, err := logstorage.ParseTenantID(tenantIDStr)
+	if err != nil {
+		logger.Fatalf("cannot parse -syslog.tenantID.udp=%q for -syslog.listenAddr.udp=%q: %s", tenantIDStr, addr, err)
+	}
+
+	compressMethod := compressMethodUDP.GetOptionalArg(argIdx)
+	checkCompressMethod(compressMethod, addr, "udp")
+
+	useLocalTimestamp := useLocalTimestampUDP.GetOptionalArg(argIdx)
+
+	doneCh := make(chan struct{})
+	go func() {
+		serveUDP(ln, tenantID, compressMethod, useLocalTimestamp)
+		close(doneCh)
+	}()
+
+	logger.Infof("started accepting syslog messages at -syslog.listenAddr.udp=%q", addr)
+	<-workersStopCh
+	if err := ln.Close(); err != nil {
+		logger.Fatalf("syslog: cannot close UDP listener at %s: %s", addr, err)
+	}
+	<-doneCh
+	logger.Infof("finished accepting syslog messages at -syslog.listenAddr.udp=%q", addr)
+}
+
+func runTCPListener(addr string, argIdx int) {
+	var tlsConfig *tls.Config
+	if tlsEnable.GetOptionalArg(argIdx) {
+		certFile := tlsCertFile.GetOptionalArg(argIdx)
+		keyFile := tlsKeyFile.GetOptionalArg(argIdx)
+		tc, err := netutil.GetServerTLSConfig(certFile, keyFile, *tlsMinVersion, *tlsCipherSuites)
+		if err != nil {
+			logger.Fatalf("cannot load TLS cert from -syslog.tlsCertFile=%q, -syslog.tlsKeyFile=%q, -syslog.tlsMinVersion=%q, -syslog.tlsCipherSuites=%q: %s",
+				certFile, keyFile, *tlsMinVersion, *tlsCipherSuites, err)
+		}
+		tlsConfig = tc
+	}
+	ln, err := netutil.NewTCPListener("syslog", addr, false, tlsConfig)
+	if err != nil {
+		logger.Fatalf("syslog: cannot start TCP listener at %s: %s", addr, err)
+	}
+
+	tenantIDStr := syslogTenantIDTCP.GetOptionalArg(argIdx)
+	tenantID, err := logstorage.ParseTenantID(tenantIDStr)
+	if err != nil {
+		logger.Fatalf("cannot parse -syslog.tenantID.tcp=%q for -syslog.listenAddr.tcp=%q: %s", tenantIDStr, addr, err)
+	}
+
+	compressMethod := compressMethodTCP.GetOptionalArg(argIdx)
+	checkCompressMethod(compressMethod, addr, "tcp")
+
+	useLocalTimestamp := useLocalTimestampTCP.GetOptionalArg(argIdx)
+
+	doneCh := make(chan struct{})
+	go func() {
+		serveTCP(ln, tenantID, compressMethod, useLocalTimestamp)
+		close(doneCh)
+	}()
+
+	logger.Infof("started accepting syslog messages at -syslog.listenAddr.tcp=%q", addr)
+	<-workersStopCh
+	if err := ln.Close(); err != nil {
+		logger.Fatalf("syslog: cannot close TCP listener at %s: %s", addr, err)
+	}
+	<-doneCh
+	logger.Infof("finished accepting syslog messages at -syslog.listenAddr.tcp=%q", addr)
+}
+
+func checkCompressMethod(compressMethod, addr, protocol string) {
+	switch compressMethod {
+	case "", "none", "gzip", "deflate":
+		return
+	default:
+		logger.Fatalf("unsupported -syslog.compressMethod.%s=%q for -syslog.listenAddr.%s=%q; supported values: 'none', 'gzip', 'deflate'", protocol, compressMethod, protocol, addr)
+	}
+}
+
+func serveUDP(ln net.PacketConn, tenantID logstorage.TenantID, compressMethod string, useLocalTimestamp bool) {
+	gomaxprocs := cgroup.AvailableCPUs()
+	var wg sync.WaitGroup
+	localAddr := ln.LocalAddr()
+	for i := 0; i < gomaxprocs; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			cp := insertutils.GetCommonParamsForSyslog(tenantID)
+			var bb bytesutil.ByteBuffer
+			bb.B = bytesutil.ResizeNoCopyNoOverallocate(bb.B, 64*1024)
+			for {
+				bb.Reset()
+				bb.B = bb.B[:cap(bb.B)]
+				n, remoteAddr, err := ln.ReadFrom(bb.B)
+				if err != nil {
+					udpErrorsTotal.Inc()
+					var ne net.Error
+					if errors.As(err, &ne) {
+						if ne.Temporary() {
+							logger.Errorf("syslog: temporary error when listening for UDP at %q: %s", localAddr, err)
+							time.Sleep(time.Second)
+							continue
+						}
+						if strings.Contains(err.Error(), "use of closed network connection") {
+							break
+						}
+					}
+					logger.Errorf("syslog: cannot read UDP data from %s at %s: %s", remoteAddr, localAddr, err)
+					continue
+				}
+				bb.B = bb.B[:n]
+				udpRequestsTotal.Inc()
+				if err := processStream(bb.NewReader(), compressMethod, useLocalTimestamp, cp); err != nil {
+					logger.Errorf("syslog: cannot process UDP data from %s at %s: %s", remoteAddr, localAddr, err)
+				}
+			}
+		}()
+	}
+	wg.Wait()
+}
+
+func serveTCP(ln net.Listener, tenantID logstorage.TenantID, compressMethod string, useLocalTimestamp bool) {
+	var cm ingestserver.ConnsMap
+	cm.Init("syslog")
+
+	var wg sync.WaitGroup
+	addr := ln.Addr()
+	for {
+		c, err := ln.Accept()
+		if err != nil {
+			var ne net.Error
+			if errors.As(err, &ne) {
+				if ne.Temporary() {
+					logger.Errorf("syslog: temporary error when listening for TCP addr %q: %s", addr, err)
+					time.Sleep(time.Second)
+					continue
+				}
+				if strings.Contains(err.Error(), "use of closed network connection") {
+					break
+				}
+				logger.Fatalf("syslog: unrecoverable error when accepting TCP connections at %q: %s", addr, err)
+			}
+			logger.Fatalf("syslog: unexpected error when accepting TCP connections at %q: %s", addr, err)
+		}
+		if !cm.Add(c) {
+			_ = c.Close()
+			break
+		}
+
+		wg.Add(1)
+		go func() {
+			cp := insertutils.GetCommonParamsForSyslog(tenantID)
+			if err := processStream(c, compressMethod, useLocalTimestamp, cp); err != nil {
+				logger.Errorf("syslog: cannot process TCP data at %q: %s", addr, err)
+			}
+
+			cm.Delete(c)
+			_ = c.Close()
+			wg.Done()
+		}()
+	}
+
+	cm.CloseAll(0)
+	wg.Wait()
+}
+
+// processStream parses a stream of syslog messages from r and ingests them into vlstorage.
+func processStream(r io.Reader, compressMethod string, useLocalTimestamp bool, cp *insertutils.CommonParams) error {
+	if err := vlstorage.CanWriteData(); err != nil {
+		return err
+	}
+
+	lmp := cp.NewLogMessageProcessor()
+	err := processStreamInternal(r, compressMethod, useLocalTimestamp, lmp)
+	lmp.MustClose()
+
+	return err
+}
+
+func processStreamInternal(r io.Reader, compressMethod string, useLocalTimestamp bool, lmp insertutils.LogMessageProcessor) error {
+	switch compressMethod {
+	case "", "none":
+	case "gzip":
+		zr, err := common.GetGzipReader(r)
+		if err != nil {
+			return fmt.Errorf("cannot read gzipped data: %w", err)
+		}
+		r = zr
+	case "deflate":
+		zr, err := common.GetZlibReader(r)
+		if err != nil {
+			return fmt.Errorf("cannot read deflated data: %w", err)
+		}
+		r = zr
+	default:
+		logger.Panicf("BUG: unsupported compressMethod=%q; supported values: none, gzip, deflate", compressMethod)
+	}
+
+	err := processUncompressedStream(r, useLocalTimestamp, lmp)
+
+	switch compressMethod {
+	case "gzip":
+		zr := r.(*gzip.Reader)
+		common.PutGzipReader(zr)
+	case "deflate":
+		zr := r.(io.ReadCloser)
+		common.PutZlibReader(zr)
+	}
+
+	return err
+}
+
+func processUncompressedStream(r io.Reader, useLocalTimestamp bool, lmp insertutils.LogMessageProcessor) error {
+	wcr := writeconcurrencylimiter.GetReader(r)
+	defer writeconcurrencylimiter.PutReader(wcr)
+
+	slr := getSyslogLineReader(wcr)
+	defer putSyslogLineReader(slr)
+
+	n := 0
+	for {
+		ok := slr.nextLine()
+		wcr.DecConcurrency()
+		if !ok {
+			break
+		}
+
+		currentYear := int(globalCurrentYear.Load())
+		err := processLine(slr.line, currentYear, globalTimezone, useLocalTimestamp, lmp)
+		if err != nil {
+			errorsTotal.Inc()
+			return fmt.Errorf("cannot read line #%d: %s", n, err)
+		}
+		n++
+		rowsIngestedTotal.Inc()
+	}
+	return slr.Error()
+}
+
+type syslogLineReader struct {
+	line []byte
+
+	br  *bufio.Reader
+	err error
+}
+
+func (slr *syslogLineReader) reset(r io.Reader) {
+	slr.line = slr.line[:0]
+	slr.br.Reset(r)
+	slr.err = nil
+}
+
+// Error returns the last error occurred in slr.
+func (slr *syslogLineReader) Error() error {
+	if slr.err == nil || slr.err == io.EOF {
+		return nil
+	}
+	return slr.err
+}
+
+// nextLine reads the next syslog line from slr and stores it at slr.line.
+//
+// false is returned if the next line cannot be read. Error() must be called in this case
+// in order to verify whether there is an error or just slr stream has been finished.
+func (slr *syslogLineReader) nextLine() bool {
+	if slr.err != nil {
+		return false
+	}
+
+again:
+	prefix, err := slr.br.ReadSlice(' ')
+	if err != nil {
+		if err != io.EOF {
+			slr.err = fmt.Errorf("cannot read message frame prefix: %w", err)
+			return false
+		}
+		if len(prefix) == 0 {
+			slr.err = err
+			return false
+		}
+	}
+	// skip empty lines
+	for len(prefix) > 0 && prefix[0] == '\n' {
+		prefix = prefix[1:]
+	}
+	if len(prefix) == 0 {
+		// An empty prefix or a prefix with empty lines - try reading yet another prefix.
+		goto again
+	}
+
+	if prefix[0] >= '0' && prefix[0] <= '9' {
+		// This is octet-counting method. See https://www.ietf.org/archive/id/draft-gerhards-syslog-plain-tcp-07.html#msgxfer
+		msgLenStr := bytesutil.ToUnsafeString(prefix[:len(prefix)-1])
+		msgLen, err := strconv.ParseUint(msgLenStr, 10, 64)
+		if err != nil {
+			slr.err = fmt.Errorf("cannot parse message length from %q: %w", msgLenStr, err)
+			return false
+		}
+		if maxMsgLen := insertutils.MaxLineSizeBytes.IntN(); msgLen > uint64(maxMsgLen) {
+			slr.err = fmt.Errorf("cannot read message longer than %d bytes; msgLen=%d", maxMsgLen, msgLen)
+			return false
+		}
+		slr.line = slicesutil.SetLength(slr.line, int(msgLen))
+		if _, err := io.ReadFull(slr.br, slr.line); err != nil {
+			slr.err = fmt.Errorf("cannot read message with size %d bytes: %w", msgLen, err)
+			return false
+		}
+		return true
+	}
+
+	// This is octet-stuffing method. See https://www.ietf.org/archive/id/draft-gerhards-syslog-plain-tcp-07.html#octet-stuffing-legacy
+	slr.line = append(slr.line[:0], prefix...)
+	for {
+		line, err := slr.br.ReadSlice('\n')
+		if err == nil {
+			slr.line = append(slr.line, line[:len(line)-1]...)
+			return true
+		}
+		if err == io.EOF {
+			slr.line = append(slr.line, line...)
+			return true
+		}
+		if err == bufio.ErrBufferFull {
+			slr.line = append(slr.line, line...)
+			continue
+		}
+		slr.err = fmt.Errorf("cannot read message in octet-stuffing method: %w", err)
+		return false
+	}
+}
+
+func getSyslogLineReader(r io.Reader) *syslogLineReader {
+	v := syslogLineReaderPool.Get()
+	if v == nil {
+		br := bufio.NewReaderSize(r, 64*1024)
+		return &syslogLineReader{
+			br: br,
+		}
+	}
+	slr := v.(*syslogLineReader)
+	slr.reset(r)
+	return slr
+}
+
+func putSyslogLineReader(slr *syslogLineReader) {
+	syslogLineReaderPool.Put(slr)
+}
+
+var syslogLineReaderPool sync.Pool
+
+func processLine(line []byte, currentYear int, timezone *time.Location, useLocalTimestamp bool, lmp insertutils.LogMessageProcessor) error {
+	p := logstorage.GetSyslogParser(currentYear, timezone)
+	lineStr := bytesutil.ToUnsafeString(line)
+	p.Parse(lineStr)
+
+	var ts int64
+	if useLocalTimestamp {
+		ts = time.Now().UnixNano()
+	} else {
+		nsecs, err := insertutils.ExtractTimestampRFC3339NanoFromFields("timestamp", p.Fields)
+		if err != nil {
+			return fmt.Errorf("cannot get timestamp from syslog line %q: %w", line, err)
+		}
+		ts = nsecs
+	}
+	logstorage.RenameField(p.Fields, "message", "_msg")
+	lmp.AddRow(ts, p.Fields)
+	logstorage.PutSyslogParser(p)
+
+	return nil
+}
+
+var (
+	rowsIngestedTotal = metrics.NewCounter(`vl_rows_ingested_total{type="syslog"}`)
+
+	errorsTotal = metrics.NewCounter(`vl_errors_total{type="syslog"}`)
+
+	udpRequestsTotal = metrics.NewCounter(`vl_udp_reqests_total{type="syslog"}`)
+	udpErrorsTotal   = metrics.NewCounter(`vl_udp_errors_total{type="syslog"}`)
+)

app/vlinsert/syslog/syslog_test.go

@@ -0,0 +1,130 @@
+package syslog
+
+import (
+	"bytes"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
+)
+
+func TestSyslogLineReader_Success(t *testing.T) {
+	f := func(data string, linesExpected []string) {
+		t.Helper()
+
+		r := bytes.NewBufferString(data)
+		slr := getSyslogLineReader(r)
+		defer putSyslogLineReader(slr)
+
+		var lines []string
+		for slr.nextLine() {
+			lines = append(lines, string(slr.line))
+		}
+		if err := slr.Error(); err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		if !reflect.DeepEqual(lines, linesExpected) {
+			t.Fatalf("unexpected lines read;\ngot\n%q\nwant\n%q", lines, linesExpected)
+		}
+	}
+
+	f("", nil)
+	f("\n", nil)
+	f("\n\n\n", nil)
+
+	f("foobar", []string{"foobar"})
+	f("foobar\n", []string{"foobar\n"})
+	f("\n\nfoo\n\nbar\n\n", []string{"foo\n\nbar\n\n"})
+
+	f(`Jun  3 12:08:33 abcd systemd: Starting Update the local ESM caches...`, []string{"Jun  3 12:08:33 abcd systemd: Starting Update the local ESM caches..."})
+
+	f(`Jun  3 12:08:33 abcd systemd: Starting Update the local ESM caches...
+
+48 <165>Jun  4 12:08:33 abcd systemd[345]: abc defg<123>1 2023-06-03T17:42:12.345Z mymachine.example.com appname 12345 ID47 [exampleSDID@32473 iut="3" eventSource="Application 123 = ] 56" eventID="11211"] This is a test message with structured data.
+
+`, []string{
+		"Jun  3 12:08:33 abcd systemd: Starting Update the local ESM caches...",
+		"<165>Jun  4 12:08:33 abcd systemd[345]: abc defg",
+		`<123>1 2023-06-03T17:42:12.345Z mymachine.example.com appname 12345 ID47 [exampleSDID@32473 iut="3" eventSource="Application 123 = ] 56" eventID="11211"] This is a test message with structured data.`,
+	})
+}
+
+func TestSyslogLineReader_Failure(t *testing.T) {
+	f := func(data string) {
+		t.Helper()
+
+		r := bytes.NewBufferString(data)
+		slr := getSyslogLineReader(r)
+		defer putSyslogLineReader(slr)
+
+		if slr.nextLine() {
+			t.Fatalf("expecting failure to read the first line")
+		}
+		if err := slr.Error(); err == nil {
+			t.Fatalf("expecting non-nil error")
+		}
+	}
+
+	// invalid format for message size
+	f("12foo bar")
+
+	// too big message size
+	f("123 aa")
+	f("1233423432 abc")
+}
+
+func TestProcessStreamInternal_Success(t *testing.T) {
+	f := func(data string, currentYear, rowsExpected int, timestampsExpected []int64, resultExpected string) {
+		t.Helper()
+
+		MustInit()
+		defer MustStop()
+
+		globalTimezone = time.UTC
+		globalCurrentYear.Store(int64(currentYear))
+
+		tlp := &insertutils.TestLogMessageProcessor{}
+		r := bytes.NewBufferString(data)
+		if err := processStreamInternal(r, "", false, tlp); err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		if err := tlp.Verify(rowsExpected, timestampsExpected, resultExpected); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	data := `Jun  3 12:08:33 abcd systemd: Starting Update the local ESM caches...
+
+48 <165>Jun  4 12:08:33 abcd systemd[345]: abc defg<123>1 2023-06-03T17:42:12.345Z mymachine.example.com appname 12345 ID47 [exampleSDID@32473 iut="3" eventSource="Application 123 = ] 56" eventID="11211"] This is a test message with structured data.
+`
+	currentYear := 2023
+	rowsExpected := 3
+	timestampsExpected := []int64{1685794113000000000, 1685880513000000000, 1685814132345000000}
+	resultExpected := `{"format":"rfc3164","timestamp":"","hostname":"abcd","app_name":"systemd","_msg":"Starting Update the local ESM caches..."}
+{"priority":"165","facility":"20","severity":"5","format":"rfc3164","timestamp":"","hostname":"abcd","app_name":"systemd","proc_id":"345","_msg":"abc defg"}
+{"priority":"123","facility":"15","severity":"3","format":"rfc5424","timestamp":"","hostname":"mymachine.example.com","app_name":"appname","proc_id":"12345","msg_id":"ID47","exampleSDID@32473.iut":"3","exampleSDID@32473.eventSource":"Application 123 = ] 56","exampleSDID@32473.eventID":"11211","_msg":"This is a test message with structured data."}`
+	f(data, currentYear, rowsExpected, timestampsExpected, resultExpected)
+}
+
+func TestProcessStreamInternal_Failure(t *testing.T) {
+	f := func(data string) {
+		t.Helper()
+
+		MustInit()
+		defer MustStop()
+
+		tlp := &insertutils.TestLogMessageProcessor{}
+		r := bytes.NewBufferString(data)
+		if err := processStreamInternal(r, "", false, tlp); err == nil {
+			t.Fatalf("expecting non-nil error")
+		}
+	}
+
+	// invalid format for message size
+	f("12foo bar")
+
+	// too big message size
+	f("123 foo")
+	f("123456789 bar")
+}

app/vlogscli/README.md

@@ -1 +0,0 @@
-VictoriaLogs source code has been moved to [github.com/VictoriaMetrics/VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaLogs/).

app/vlogsgenerator/Makefile

@@ -0,0 +1,7 @@
+# All these commands must run from repository root.
+
+vlogsgenerator:
+	APP_NAME=vlogsgenerator $(MAKE) app-local
+
+vlogsgenerator-race:
+	APP_NAME=vlogsgenerator RACE=-race $(MAKE) app-local

app/vlogsgenerator/README.md

@@ -1 +1,158 @@
-VictoriaLogs source code has been moved to [github.com/VictoriaMetrics/VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaLogs/).
+# vlogsgenerator
+
+Logs generator for [VictoriaLogs](https://docs.victoriametrics.com/victorialogs/).
+
+## How to build vlogsgenerator?
+
+Run `make vlogsgenerator` from the repository root. This builds `bin/vlogsgenerator` binary.
+
+## How run vlogsgenerator?
+
+`vlogsgenerator` generates logs in [JSON line format](https://jsonlines.org/) suitable for the ingestion
+via [`/insert/jsonline` endpoint at VictoriaLogs](https://docs.victoriametrics.com/victorialogs/data-ingestion/#json-stream-api).
+
+By default it writes the generated logs into `stdout`. For example, the following command writes generated logs to `stdout`:
+
+```
+bin/vlogsgenerator
+```
+
+It is possible to redirect the generated logs to file. For example, the following command writes the generated logs to `logs.json` file:
+
+```
+bin/vlogsgenerator > logs.json
+```
+
+The generated logs at `logs.json` file can be inspected with the following command:
+
+```
+head logs.json | jq .
+```
+
+Below is an example output:
+
+```json
+{
+  "_time": "2024-05-08T14:34:00.854Z",
+  "_msg": "message for the stream 8 and worker 0; ip=185.69.136.129; uuid=b4fe8f1a-c93c-dea3-ba11-5b9f0509291e; u64=8996587920687045253",
+  "host": "host_8",
+  "worker_id": "0",
+  "run_id": "f9b3deee-e6b6-7f56-5deb-1586e4e81725",
+  "const_0": "some value 0 8",
+  "const_1": "some value 1 8",
+  "const_2": "some value 2 8",
+  "var_0": "some value 0 12752539384823438260",
+  "dict_0": "warn",
+  "dict_1": "info",
+  "u8_0": "6",
+  "u16_0": "35202",
+  "u32_0": "1964973739",
+  "u64_0": "4810489083243239145",
+  "float_0": "1.868",
+  "ip_0": "250.34.75.125",
+  "timestamp_0": "1799-03-16T01:34:18.311Z",
+  "json_0": "{\"foo\":\"bar_3\",\"baz\":{\"a\":[\"x\",\"y\"]},\"f3\":NaN,\"f4\":32}"
+}
+{
+  "_time": "2024-05-08T14:34:00.854Z",
+  "_msg": "message for the stream 9 and worker 0; ip=164.244.254.194; uuid=7e8373b1-ce0d-1ce7-8e96-4bcab8955598; u64=13949903463741076522",
+  "host": "host_9",
+  "worker_id": "0",
+  "run_id": "f9b3deee-e6b6-7f56-5deb-1586e4e81725",
+  "const_0": "some value 0 9",
+  "const_1": "some value 1 9",
+  "const_2": "some value 2 9",
+  "var_0": "some value 0 5371555382075206134",
+  "dict_0": "INFO",
+  "dict_1": "FATAL",
+  "u8_0": "219",
+  "u16_0": "31459",
+  "u32_0": "3918836777",
+  "u64_0": "6593354256620219850",
+  "float_0": "1.085",
+  "ip_0": "253.151.88.158",
+  "timestamp_0": "2042-10-05T16:42:57.082Z",
+  "json_0": "{\"foo\":\"bar_5\",\"baz\":{\"a\":[\"x\",\"y\"]},\"f3\":NaN,\"f4\":27}"
+}
+```
+
+The `run_id` field uniquely identifies every `vlogsgenerator` invocation.
+
+### How to write logs to VictoriaLogs?
+
+The generated logs can be written directly to VictoriaLogs by passing the address of [`/insert/jsonline` endpoint](https://docs.victoriametrics.com/victorialogs/data-ingestion/#json-stream-api)
+to `-addr` command-line flag. For example, the following command writes the generated logs to VictoriaLogs running at `localhost`:
+
+```
+bin/vlogsgenerator -addr=http://localhost:9428/insert/jsonline
+```
+
+### Configuration
+
+`vlogsgenerator` accepts various command-line flags, which can be used for configuring the number and the shape of the generated logs.
+These flags can be inspected by running `vlogsgenerator -help`. Below are the most interesting flags:
+
+* `-start` - starting timestamp for generating logs. Logs are evenly generated on the [`-start` ... `-end`] interval.
+* `-end` - ending timestamp for generating logs. Logs are evenly generated on the [`-start` ... `-end`] interval.
+* `-activeStreams` - the number of active [log streams](https://docs.victoriametrics.com/victorialogs/keyconcepts/#stream-fields) to generate.
+* `-logsPerStream` - the number of log entries to generate per each log stream. Log entries are evenly distributed on the [`-start` ... `-end`] interval.
+
+The total number of generated logs can be calculated as `-activeStreams` * `-logsPerStream`.
+
+For example, the following command generates `1_000_000` log entries on the time range `[2024-01-01 - 2024-02-01]` across `100`
+[log streams](https://docs.victoriametrics.com/victorialogs/keyconcepts/#stream-fields), where every logs stream contains `10_000` log entries,
+and writes them to `http://localhost:9428/insert/jsonline`:
+
+```
+bin/vlogsgenerator \
+  -start=2024-01-01 -end=2024-02-01 \
+  -activeStreams=100 \
+  -logsPerStream=10_000 \
+  -addr=http://localhost:9428/insert/jsonline
+```
+
+### Churn rate
+
+It is possible to generate churn rate for active [log streams](https://docs.victoriametrics.com/victorialogs/keyconcepts/#stream-fields)
+by specifying `-totalStreams` command-line flag bigger than `-activeStreams`. For example, the following command generates
+logs for `1000` total streams, while the number of active streams equals to `100`. This means that at every time there are logs for `100` streams,
+but these streams change over the given [`-start` ... `-end`] time range, so the total number of streams on the given time range becomes `1000`:
+
+```
+bin/vlogsgenerator \
+  -start=2024-01-01 -end=2024-02-01 \
+  -activeStreams=100 \
+  -totalStreams=1_000 \
+  -logsPerStream=10_000 \
+  -addr=http://localhost:9428/insert/jsonline
+```
+
+In this case the total number of generated logs equals to `-totalStreams` * `-logsPerStream` = `10_000_000`.
+
+### Benchmark tuning
+
+By default `vlogsgenerator` generates and writes logs by a single worker. This may limit the maximum data ingestion rate during benchmarks.
+The number of workers can be changed via `-workers` command-line flag. For example, the following command generates and writes logs with `16` workers:
+
+```
+bin/vlogsgenerator \
+  -start=2024-01-01 -end=2024-02-01 \
+  -activeStreams=100 \
+  -logsPerStream=10_000 \
+  -addr=http://localhost:9428/insert/jsonline \
+  -workers=16
+```
+
+### Output statistics
+
+Every 10 seconds `vlogsgenerator` writes statistics about the generated logs into `stderr`. The frequency of the generated statistics can be adjusted via `-statInterval` command-line flag.
+For example, the following command writes statistics every 2 seconds:
+
+```
+bin/vlogsgenerator \
+  -start=2024-01-01 -end=2024-02-01 \
+  -activeStreams=100 \
+  -logsPerStream=10_000 \
+  -addr=http://localhost:9428/insert/jsonline \
+  -statInterval=2s
+```

app/vlogsgenerator/main.go

@@ -0,0 +1,344 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"io"
+	"math"
+	"math/rand"
+	"net/http"
+	"net/url"
+	"os"
+	"strconv"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/envflag"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
+)
+
+var (
+	addr    = flag.String("addr", "stdout", "HTTP address to push the generated logs to; if it is set to stdout, then logs are generated to stdout")
+	workers = flag.Int("workers", 1, "The number of workers to use to push logs to -addr")
+
+	start         = newTimeFlag("start", "-1d", "Generated logs start from this time; see https://docs.victoriametrics.com/#timestamp-formats")
+	end           = newTimeFlag("end", "0s", "Generated logs end at this time; see https://docs.victoriametrics.com/#timestamp-formats")
+	activeStreams = flag.Int("activeStreams", 100, "The number of active log streams to generate; see https://docs.victoriametrics.com/victorialogs/keyconcepts/#stream-fields")
+	totalStreams  = flag.Int("totalStreams", 0, "The number of total log streams; if -totalStreams > -activeStreams, then some active streams are substituted with new streams "+
+		"during data generation")
+	logsPerStream     = flag.Int64("logsPerStream", 1_000, "The number of log entries to generate per each log stream. Log entries are evenly distributed between -start and -end")
+	constFieldsPerLog = flag.Int("constFieldsPerLog", 3, "The number of fields with constaint values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	varFieldsPerLog = flag.Int("varFieldsPerLog", 1, "The number of fields with variable values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	dictFieldsPerLog = flag.Int("dictFieldsPerLog", 2, "The number of fields with up to 8 different values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	u8FieldsPerLog = flag.Int("u8FieldsPerLog", 1, "The number of fields with uint8 values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	u16FieldsPerLog = flag.Int("u16FieldsPerLog", 1, "The number of fields with uint16 values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	u32FieldsPerLog = flag.Int("u32FieldsPerLog", 1, "The number of fields with uint32 values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	u64FieldsPerLog = flag.Int("u64FieldsPerLog", 1, "The number of fields with uint64 values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	floatFieldsPerLog = flag.Int("floatFieldsPerLog", 1, "The number of fields with float64 values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	ipFieldsPerLog = flag.Int("ipFieldsPerLog", 1, "The number of fields with IPv4 values to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	timestampFieldsPerLog = flag.Int("timestampFieldsPerLog", 1, "The number of fields with ISO8601 timestamps per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+	jsonFieldsPerLog = flag.Int("jsonFieldsPerLog", 1, "The number of JSON fields to generate per each log entry; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model")
+
+	statInterval = flag.Duration("statInterval", 10*time.Second, "The interval between publishing the stats")
+)
+
+func main() {
+	// Write flags and help message to stdout, since it is easier to grep or pipe.
+	flag.CommandLine.SetOutput(os.Stdout)
+	envflag.Parse()
+	buildinfo.Init()
+	logger.Init()
+
+	var remoteWriteURL *url.URL
+	if *addr != "stdout" {
+		urlParsed, err := url.Parse(*addr)
+		if err != nil {
+			logger.Fatalf("cannot parse -addr=%q: %s", *addr, err)
+		}
+		qs, err := url.ParseQuery(urlParsed.RawQuery)
+		if err != nil {
+			logger.Fatalf("cannot parse query string in -addr=%q: %w", *addr, err)
+		}
+		qs.Set("_stream_fields", "host,worker_id")
+		urlParsed.RawQuery = qs.Encode()
+		remoteWriteURL = urlParsed
+	}
+
+	if start.nsec >= end.nsec {
+		logger.Fatalf("-start=%s must be smaller than -end=%s", start, end)
+	}
+	if *activeStreams <= 0 {
+		logger.Fatalf("-activeStreams must be bigger than 0; got %d", *activeStreams)
+	}
+	if *logsPerStream <= 0 {
+		logger.Fatalf("-logsPerStream must be bigger than 0; got %d", *logsPerStream)
+	}
+	if *totalStreams < *activeStreams {
+		*totalStreams = *activeStreams
+	}
+
+	cfg := &workerConfig{
+		url:           remoteWriteURL,
+		activeStreams: *activeStreams,
+		totalStreams:  *totalStreams,
+	}
+
+	// divide total and active streams among workers
+	if *workers <= 0 {
+		logger.Fatalf("-workers must be bigger than 0; got %d", *workers)
+	}
+	if *workers > *activeStreams {
+		logger.Fatalf("-workers=%d cannot exceed -activeStreams=%d", *workers, *activeStreams)
+	}
+	cfg.activeStreams /= *workers
+	cfg.totalStreams /= *workers
+
+	logger.Infof("start -workers=%d workers for ingesting -logsPerStream=%d log entries per each -totalStreams=%d (-activeStreams=%d) on a time range -start=%s, -end=%s to -addr=%s",
+		*workers, *logsPerStream, *totalStreams, *activeStreams, toRFC3339(start.nsec), toRFC3339(end.nsec), *addr)
+
+	startTime := time.Now()
+	var wg sync.WaitGroup
+	for i := 0; i < *workers; i++ {
+		wg.Add(1)
+		go func(workerID int) {
+			defer wg.Done()
+			generateAndPushLogs(cfg, workerID)
+		}(i)
+	}
+
+	go func() {
+		prevEntries := uint64(0)
+		prevBytes := uint64(0)
+		ticker := time.NewTicker(*statInterval)
+		for range ticker.C {
+			currEntries := logEntriesCount.Load()
+			deltaEntries := currEntries - prevEntries
+			rateEntries := float64(deltaEntries) / statInterval.Seconds()
+
+			currBytes := bytesGenerated.Load()
+			deltaBytes := currBytes - prevBytes
+			rateBytes := float64(deltaBytes) / statInterval.Seconds()
+			logger.Infof("generated %dK log entries (%dK total) at %.0fK entries/sec, %dMB (%dMB total) at %.0fMB/sec",
+				deltaEntries/1e3, currEntries/1e3, rateEntries/1e3, deltaBytes/1e6, currBytes/1e6, rateBytes/1e6)
+
+			prevEntries = currEntries
+			prevBytes = currBytes
+		}
+	}()
+
+	wg.Wait()
+
+	dSecs := time.Since(startTime).Seconds()
+	currEntries := logEntriesCount.Load()
+	currBytes := bytesGenerated.Load()
+	rateEntries := float64(currEntries) / dSecs
+	rateBytes := float64(currBytes) / dSecs
+	logger.Infof("ingested %dK log entries (%dMB) in %.3f seconds; avg ingestion rate: %.0fK entries/sec, %.0fMB/sec", currEntries/1e3, currBytes/1e6, dSecs, rateEntries/1e3, rateBytes/1e6)
+}
+
+var logEntriesCount atomic.Uint64
+
+var bytesGenerated atomic.Uint64
+
+type workerConfig struct {
+	url           *url.URL
+	activeStreams int
+	totalStreams  int
+}
+
+type statWriter struct {
+	w io.Writer
+}
+
+func (sw *statWriter) Write(p []byte) (int, error) {
+	bytesGenerated.Add(uint64(len(p)))
+	return sw.w.Write(p)
+}
+
+func generateAndPushLogs(cfg *workerConfig, workerID int) {
+	pr, pw := io.Pipe()
+	sw := &statWriter{
+		w: pw,
+	}
+	bw := bufio.NewWriter(sw)
+	doneCh := make(chan struct{})
+	go func() {
+		generateLogs(bw, workerID, cfg.activeStreams, cfg.totalStreams)
+		_ = bw.Flush()
+		_ = pw.Close()
+		close(doneCh)
+	}()
+
+	if cfg.url == nil {
+		_, err := io.Copy(os.Stdout, pr)
+		if err != nil {
+			logger.Fatalf("unexpected error when writing logs to stdout: %s", err)
+		}
+		return
+	}
+
+	req, err := http.NewRequest("POST", cfg.url.String(), pr)
+	if err != nil {
+		logger.Fatalf("cannot create request to %q: %s", cfg.url, err)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		logger.Fatalf("cannot perform request to %q: %s", cfg.url, err)
+	}
+	if resp.StatusCode/100 != 2 {
+		logger.Fatalf("unexpected status code got from %q: %d; want 2xx", cfg.url, err)
+	}
+
+	// Wait until all the generateLogs goroutine is finished.
+	<-doneCh
+}
+
+func generateLogs(bw *bufio.Writer, workerID, activeStreams, totalStreams int) {
+	streamLifetime := int64(float64(end.nsec-start.nsec) * (float64(activeStreams) / float64(totalStreams)))
+	streamStep := int64(float64(end.nsec-start.nsec) / float64(totalStreams-activeStreams+1))
+	step := streamLifetime / (*logsPerStream - 1)
+
+	currNsec := start.nsec
+	for currNsec < end.nsec {
+		firstStreamID := int((currNsec - start.nsec) / streamStep)
+		generateLogsAtTimestamp(bw, workerID, currNsec, firstStreamID, activeStreams)
+		currNsec += step
+	}
+}
+
+var runID = toUUID(rand.Uint64(), rand.Uint64())
+
+func generateLogsAtTimestamp(bw *bufio.Writer, workerID int, ts int64, firstStreamID, activeStreams int) {
+	streamID := firstStreamID
+	timeStr := toRFC3339(ts)
+	for i := 0; i < activeStreams; i++ {
+		ip := toIPv4(rand.Uint32())
+		uuid := toUUID(rand.Uint64(), rand.Uint64())
+		fmt.Fprintf(bw, `{"_time":"%s","_msg":"message for the stream %d and worker %d; ip=%s; uuid=%s; u64=%d","host":"host_%d","worker_id":"%d"`,
+			timeStr, streamID, workerID, ip, uuid, rand.Uint64(), streamID, workerID)
+		fmt.Fprintf(bw, `,"run_id":"%s"`, runID)
+		for j := 0; j < *constFieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"const_%d":"some value %d %d"`, j, j, streamID)
+		}
+		for j := 0; j < *varFieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"var_%d":"some value %d %d"`, j, j, rand.Uint64())
+		}
+		for j := 0; j < *dictFieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"dict_%d":"%s"`, j, dictValues[rand.Intn(len(dictValues))])
+		}
+		for j := 0; j < *u8FieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"u8_%d":"%d"`, j, uint8(rand.Uint32()))
+		}
+		for j := 0; j < *u16FieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"u16_%d":"%d"`, j, uint16(rand.Uint32()))
+		}
+		for j := 0; j < *u32FieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"u32_%d":"%d"`, j, rand.Uint32())
+		}
+		for j := 0; j < *u64FieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"u64_%d":"%d"`, j, rand.Uint64())
+		}
+		for j := 0; j < *floatFieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"float_%d":"%v"`, j, math.Round(10_000*rand.Float64())/1000)
+		}
+		for j := 0; j < *ipFieldsPerLog; j++ {
+			ip := toIPv4(rand.Uint32())
+			fmt.Fprintf(bw, `,"ip_%d":"%s"`, j, ip)
+		}
+		for j := 0; j < *timestampFieldsPerLog; j++ {
+			timestamp := toISO8601(int64(rand.Uint64()))
+			fmt.Fprintf(bw, `,"timestamp_%d":"%s"`, j, timestamp)
+		}
+		for j := 0; j < *jsonFieldsPerLog; j++ {
+			fmt.Fprintf(bw, `,"json_%d":"{\"foo\":\"bar_%d\",\"baz\":{\"a\":[\"x\",\"y\"]},\"f3\":NaN,\"f4\":%d}"`, j, rand.Intn(10), rand.Intn(100))
+		}
+		fmt.Fprintf(bw, "}\n")
+
+		logEntriesCount.Add(1)
+		streamID++
+	}
+}
+
+var dictValues = []string{
+	"debug",
+	"info",
+	"warn",
+	"error",
+	"fatal",
+	"ERROR",
+	"FATAL",
+	"INFO",
+}
+
+func newTimeFlag(name, defaultValue, description string) *timeFlag {
+	var tf timeFlag
+	if err := tf.Set(defaultValue); err != nil {
+		logger.Panicf("invalid defaultValue=%q for flag %q: %w", defaultValue, name, err)
+	}
+	flag.Var(&tf, name, description)
+	return &tf
+}
+
+type timeFlag struct {
+	s    string
+	nsec int64
+}
+
+func (tf *timeFlag) Set(s string) error {
+	msec, err := promutils.ParseTimeMsec(s)
+	if err != nil {
+		return fmt.Errorf("cannot parse time from %q: %w", s, err)
+	}
+	tf.s = s
+	tf.nsec = msec * 1e6
+	return nil
+}
+
+func (tf *timeFlag) String() string {
+	return tf.s
+}
+
+func toRFC3339(nsec int64) string {
+	return time.Unix(0, nsec).UTC().Format(time.RFC3339Nano)
+}
+
+func toISO8601(nsec int64) string {
+	return time.Unix(0, nsec).UTC().Format("2006-01-02T15:04:05.000Z")
+}
+
+func toIPv4(n uint32) string {
+	dst := make([]byte, 0, len("255.255.255.255"))
+	dst = marshalUint64(dst, uint64(n>>24))
+	dst = append(dst, '.')
+	dst = marshalUint64(dst, uint64((n>>16)&0xff))
+	dst = append(dst, '.')
+	dst = marshalUint64(dst, uint64((n>>8)&0xff))
+	dst = append(dst, '.')
+	dst = marshalUint64(dst, uint64(n&0xff))
+	return string(dst)
+}
+
+func toUUID(a, b uint64) string {
+	return fmt.Sprintf("%08x-%04x-%04x-%04x-%012x", a&(1<<32-1), (a>>32)&(1<<16-1), (a >> 48), b&(1<<16-1), b>>16)
+}
+
+// marshalUint64 appends string representation of n to dst and returns the result.
+func marshalUint64(dst []byte, n uint64) []byte {
+	return strconv.AppendUint(dst, n, 10)
+}

app/vlselect/README.md

@@ -1 +0,0 @@
-VictoriaLogs source code has been moved to [github.com/VictoriaMetrics/VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaLogs/).

app/vlselect/logsql/buffered_writer.go

@@ -0,0 +1,47 @@
+package logsql
+
+import (
+	"bufio"
+	"io"
+	"sync"
+)
+
+func getBufferedWriter(w io.Writer) *bufferedWriter {
+	v := bufferedWriterPool.Get()
+	if v == nil {
+		return &bufferedWriter{
+			bw: bufio.NewWriter(w),
+		}
+	}
+	bw := v.(*bufferedWriter)
+	bw.bw.Reset(w)
+	return bw
+}
+
+func putBufferedWriter(bw *bufferedWriter) {
+	bw.reset()
+	bufferedWriterPool.Put(bw)
+}
+
+var bufferedWriterPool sync.Pool
+
+type bufferedWriter struct {
+	mu sync.Mutex
+	bw *bufio.Writer
+}
+
+func (bw *bufferedWriter) reset() {
+	// nothing to do
+}
+
+func (bw *bufferedWriter) WriteIgnoreErrors(p []byte) {
+	bw.mu.Lock()
+	_, _ = bw.bw.Write(p)
+	bw.mu.Unlock()
+}
+
+func (bw *bufferedWriter) FlushIgnoreErrors() {
+	bw.mu.Lock()
+	_ = bw.bw.Flush()
+	bw.mu.Unlock()
+}

app/vlselect/logsql/hits_response.qtpl

@@ -0,0 +1,70 @@
+{% import (
+	"slices"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+) %}
+
+{% stripspace %}
+
+// FieldsForHits formats labels for /select/logsql/hits response
+{% func FieldsForHits(columns []logstorage.BlockColumn, rowIdx int) %}
+{
+	{% if len(columns) > 0 %}
+		{%q= columns[0].Name %}:{%q= columns[0].Values[rowIdx] %}
+		{% for _, c := range columns[1:] %}
+			,{%q= c.Name %}:{%q= c.Values[rowIdx] %}
+		{% endfor %}
+	{% endif %}
+}
+{% endfunc %}
+
+{% func HitsSeries(m map[string]*hitsSeries) %}
+{
+	{% code
+		sortedKeys := make([]string, 0, len(m))
+		for k := range m {
+			sortedKeys = append(sortedKeys, k)
+		}
+		slices.Sort(sortedKeys)
+	%}
+	"hits":[
+		{% if len(sortedKeys) > 0 %}
+			{%= hitsSeriesLine(m, sortedKeys[0]) %}
+			{% for _, k := range sortedKeys[1:] %}
+				,{%= hitsSeriesLine(m, k) %}
+			{% endfor %}
+		{% endif %}
+	]
+}
+{% endfunc %}
+
+{% func hitsSeriesLine(m map[string]*hitsSeries, k string) %}
+{
+	{% code
+		hs := m[k]
+		hs.sort()
+		timestamps := hs.timestamps
+		hits := hs.hits
+	%}
+	"fields":{%s= k %},
+	"timestamps":[
+		{% if len(timestamps) > 0 %}
+			{%q= timestamps[0] %}
+			{% for _, ts := range timestamps[1:] %}
+				,{%q= ts %}
+			{% endfor %}
+		{% endif %}
+	],
+	"values":[
+		{% if len(hits) > 0 %}
+			{%dul= hits[0] %}
+			{% for _, v := range hits[1:] %}
+				,{%dul= v %}
+			{% endfor %}
+		{% endif %}
+	],
+	"total":{%dul= hs.hitsTotal %}
+}
+{% endfunc %}
+
+{% endstripspace %}

app/vlselect/logsql/hits_response.qtpl.go

@@ -0,0 +1,223 @@
+// Code generated by qtc from "hits_response.qtpl". DO NOT EDIT.
+// See https://github.com/valyala/quicktemplate for details.
+
+//line app/vlselect/logsql/hits_response.qtpl:1
+package logsql
+
+//line app/vlselect/logsql/hits_response.qtpl:1
+import (
+	"slices"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+)
+
+// FieldsForHits formats labels for /select/logsql/hits response
+
+//line app/vlselect/logsql/hits_response.qtpl:10
+import (
+	qtio422016 "io"
+
+	qt422016 "github.com/valyala/quicktemplate"
+)
+
+//line app/vlselect/logsql/hits_response.qtpl:10
+var (
+	_ = qtio422016.Copy
+	_ = qt422016.AcquireByteBuffer
+)
+
+//line app/vlselect/logsql/hits_response.qtpl:10
+func StreamFieldsForHits(qw422016 *qt422016.Writer, columns []logstorage.BlockColumn, rowIdx int) {
+//line app/vlselect/logsql/hits_response.qtpl:10
+	qw422016.N().S(`{`)
+//line app/vlselect/logsql/hits_response.qtpl:12
+	if len(columns) > 0 {
+//line app/vlselect/logsql/hits_response.qtpl:13
+		qw422016.N().Q(columns[0].Name)
+//line app/vlselect/logsql/hits_response.qtpl:13
+		qw422016.N().S(`:`)
+//line app/vlselect/logsql/hits_response.qtpl:13
+		qw422016.N().Q(columns[0].Values[rowIdx])
+//line app/vlselect/logsql/hits_response.qtpl:14
+		for _, c := range columns[1:] {
+//line app/vlselect/logsql/hits_response.qtpl:14
+			qw422016.N().S(`,`)
+//line app/vlselect/logsql/hits_response.qtpl:15
+			qw422016.N().Q(c.Name)
+//line app/vlselect/logsql/hits_response.qtpl:15
+			qw422016.N().S(`:`)
+//line app/vlselect/logsql/hits_response.qtpl:15
+			qw422016.N().Q(c.Values[rowIdx])
+//line app/vlselect/logsql/hits_response.qtpl:16
+		}
+//line app/vlselect/logsql/hits_response.qtpl:17
+	}
+//line app/vlselect/logsql/hits_response.qtpl:17
+	qw422016.N().S(`}`)
+//line app/vlselect/logsql/hits_response.qtpl:19
+}
+
+//line app/vlselect/logsql/hits_response.qtpl:19
+func WriteFieldsForHits(qq422016 qtio422016.Writer, columns []logstorage.BlockColumn, rowIdx int) {
+//line app/vlselect/logsql/hits_response.qtpl:19
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlselect/logsql/hits_response.qtpl:19
+	StreamFieldsForHits(qw422016, columns, rowIdx)
+//line app/vlselect/logsql/hits_response.qtpl:19
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlselect/logsql/hits_response.qtpl:19
+}
+
+//line app/vlselect/logsql/hits_response.qtpl:19
+func FieldsForHits(columns []logstorage.BlockColumn, rowIdx int) string {
+//line app/vlselect/logsql/hits_response.qtpl:19
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlselect/logsql/hits_response.qtpl:19
+	WriteFieldsForHits(qb422016, columns, rowIdx)
+//line app/vlselect/logsql/hits_response.qtpl:19
+	qs422016 := string(qb422016.B)
+//line app/vlselect/logsql/hits_response.qtpl:19
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlselect/logsql/hits_response.qtpl:19
+	return qs422016
+//line app/vlselect/logsql/hits_response.qtpl:19
+}
+
+//line app/vlselect/logsql/hits_response.qtpl:21
+func StreamHitsSeries(qw422016 *qt422016.Writer, m map[string]*hitsSeries) {
+//line app/vlselect/logsql/hits_response.qtpl:21
+	qw422016.N().S(`{`)
+//line app/vlselect/logsql/hits_response.qtpl:24
+	sortedKeys := make([]string, 0, len(m))
+	for k := range m {
+		sortedKeys = append(sortedKeys, k)
+	}
+	slices.Sort(sortedKeys)
+
+//line app/vlselect/logsql/hits_response.qtpl:29
+	qw422016.N().S(`"hits":[`)
+//line app/vlselect/logsql/hits_response.qtpl:31
+	if len(sortedKeys) > 0 {
+//line app/vlselect/logsql/hits_response.qtpl:32
+		streamhitsSeriesLine(qw422016, m, sortedKeys[0])
+//line app/vlselect/logsql/hits_response.qtpl:33
+		for _, k := range sortedKeys[1:] {
+//line app/vlselect/logsql/hits_response.qtpl:33
+			qw422016.N().S(`,`)
+//line app/vlselect/logsql/hits_response.qtpl:34
+			streamhitsSeriesLine(qw422016, m, k)
+//line app/vlselect/logsql/hits_response.qtpl:35
+		}
+//line app/vlselect/logsql/hits_response.qtpl:36
+	}
+//line app/vlselect/logsql/hits_response.qtpl:36
+	qw422016.N().S(`]}`)
+//line app/vlselect/logsql/hits_response.qtpl:39
+}
+
+//line app/vlselect/logsql/hits_response.qtpl:39
+func WriteHitsSeries(qq422016 qtio422016.Writer, m map[string]*hitsSeries) {
+//line app/vlselect/logsql/hits_response.qtpl:39
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlselect/logsql/hits_response.qtpl:39
+	StreamHitsSeries(qw422016, m)
+//line app/vlselect/logsql/hits_response.qtpl:39
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlselect/logsql/hits_response.qtpl:39
+}
+
+//line app/vlselect/logsql/hits_response.qtpl:39
+func HitsSeries(m map[string]*hitsSeries) string {
+//line app/vlselect/logsql/hits_response.qtpl:39
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlselect/logsql/hits_response.qtpl:39
+	WriteHitsSeries(qb422016, m)
+//line app/vlselect/logsql/hits_response.qtpl:39
+	qs422016 := string(qb422016.B)
+//line app/vlselect/logsql/hits_response.qtpl:39
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlselect/logsql/hits_response.qtpl:39
+	return qs422016
+//line app/vlselect/logsql/hits_response.qtpl:39
+}
+
+//line app/vlselect/logsql/hits_response.qtpl:41
+func streamhitsSeriesLine(qw422016 *qt422016.Writer, m map[string]*hitsSeries, k string) {
+//line app/vlselect/logsql/hits_response.qtpl:41
+	qw422016.N().S(`{`)
+//line app/vlselect/logsql/hits_response.qtpl:44
+	hs := m[k]
+	hs.sort()
+	timestamps := hs.timestamps
+	hits := hs.hits
+
+//line app/vlselect/logsql/hits_response.qtpl:48
+	qw422016.N().S(`"fields":`)
+//line app/vlselect/logsql/hits_response.qtpl:49
+	qw422016.N().S(k)
+//line app/vlselect/logsql/hits_response.qtpl:49
+	qw422016.N().S(`,"timestamps":[`)
+//line app/vlselect/logsql/hits_response.qtpl:51
+	if len(timestamps) > 0 {
+//line app/vlselect/logsql/hits_response.qtpl:52
+		qw422016.N().Q(timestamps[0])
+//line app/vlselect/logsql/hits_response.qtpl:53
+		for _, ts := range timestamps[1:] {
+//line app/vlselect/logsql/hits_response.qtpl:53
+			qw422016.N().S(`,`)
+//line app/vlselect/logsql/hits_response.qtpl:54
+			qw422016.N().Q(ts)
+//line app/vlselect/logsql/hits_response.qtpl:55
+		}
+//line app/vlselect/logsql/hits_response.qtpl:56
+	}
+//line app/vlselect/logsql/hits_response.qtpl:56
+	qw422016.N().S(`],"values":[`)
+//line app/vlselect/logsql/hits_response.qtpl:59
+	if len(hits) > 0 {
+//line app/vlselect/logsql/hits_response.qtpl:60
+		qw422016.N().DUL(hits[0])
+//line app/vlselect/logsql/hits_response.qtpl:61
+		for _, v := range hits[1:] {
+//line app/vlselect/logsql/hits_response.qtpl:61
+			qw422016.N().S(`,`)
+//line app/vlselect/logsql/hits_response.qtpl:62
+			qw422016.N().DUL(v)
+//line app/vlselect/logsql/hits_response.qtpl:63
+		}
+//line app/vlselect/logsql/hits_response.qtpl:64
+	}
+//line app/vlselect/logsql/hits_response.qtpl:64
+	qw422016.N().S(`],"total":`)
+//line app/vlselect/logsql/hits_response.qtpl:66
+	qw422016.N().DUL(hs.hitsTotal)
+//line app/vlselect/logsql/hits_response.qtpl:66
+	qw422016.N().S(`}`)
+//line app/vlselect/logsql/hits_response.qtpl:68
+}
+
+//line app/vlselect/logsql/hits_response.qtpl:68
+func writehitsSeriesLine(qq422016 qtio422016.Writer, m map[string]*hitsSeries, k string) {
+//line app/vlselect/logsql/hits_response.qtpl:68
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlselect/logsql/hits_response.qtpl:68
+	streamhitsSeriesLine(qw422016, m, k)
+//line app/vlselect/logsql/hits_response.qtpl:68
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlselect/logsql/hits_response.qtpl:68
+}
+
+//line app/vlselect/logsql/hits_response.qtpl:68
+func hitsSeriesLine(m map[string]*hitsSeries, k string) string {
+//line app/vlselect/logsql/hits_response.qtpl:68
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlselect/logsql/hits_response.qtpl:68
+	writehitsSeriesLine(qb422016, m, k)
+//line app/vlselect/logsql/hits_response.qtpl:68
+	qs422016 := string(qb422016.B)
+//line app/vlselect/logsql/hits_response.qtpl:68
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlselect/logsql/hits_response.qtpl:68
+	return qs422016
+//line app/vlselect/logsql/hits_response.qtpl:68
+}

app/vlselect/logsql/logsql.go

@@ -0,0 +1,771 @@
+package logsql
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"net/http"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/VictoriaMetrics/metrics"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httputils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
+)
+
+// ProcessHitsRequest handles /select/logsql/hits request.
+//
+// See https://docs.victoriametrics.com/victorialogs/querying/#querying-hits-stats
+func ProcessHitsRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	// Obtain step
+	stepStr := r.FormValue("step")
+	if stepStr == "" {
+		stepStr = "1d"
+	}
+	step, err := promutils.ParseDuration(stepStr)
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot parse 'step' arg: %s", err)
+		return
+	}
+	if step <= 0 {
+		httpserver.Errorf(w, r, "'step' must be bigger than zero")
+	}
+
+	// Obtain offset
+	offsetStr := r.FormValue("offset")
+	if offsetStr == "" {
+		offsetStr = "0s"
+	}
+	offset, err := promutils.ParseDuration(offsetStr)
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot parse 'offset' arg: %s", err)
+		return
+	}
+
+	// Obtain field entries
+	fields := r.Form["field"]
+
+	// Obtain limit on the number of top fields entries.
+	fieldsLimit, err := httputils.GetInt(r, "fields_limit")
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	if fieldsLimit < 0 {
+		fieldsLimit = 0
+	}
+
+	// Prepare the query for hits count.
+	q.Optimize()
+	q.DropAllPipes()
+	q.AddCountByTimePipe(int64(step), int64(offset), fields)
+
+	var mLock sync.Mutex
+	m := make(map[string]*hitsSeries)
+	writeBlock := func(_ uint, timestamps []int64, columns []logstorage.BlockColumn) {
+		if len(columns) == 0 || len(columns[0].Values) == 0 {
+			return
+		}
+
+		timestampValues := columns[0].Values
+		hitsValues := columns[len(columns)-1].Values
+		columns = columns[1 : len(columns)-1]
+
+		bb := blockResultPool.Get()
+		for i := range timestamps {
+			timestampStr := strings.Clone(timestampValues[i])
+			hitsStr := strings.Clone(hitsValues[i])
+			hits, err := strconv.ParseUint(hitsStr, 10, 64)
+			if err != nil {
+				logger.Panicf("BUG: cannot parse hitsStr=%q: %s", hitsStr, err)
+			}
+
+			bb.Reset()
+			WriteFieldsForHits(bb, columns, i)
+
+			mLock.Lock()
+			hs, ok := m[string(bb.B)]
+			if !ok {
+				k := string(bb.B)
+				hs = &hitsSeries{}
+				m[k] = hs
+			}
+			hs.timestamps = append(hs.timestamps, timestampStr)
+			hs.hits = append(hs.hits, hits)
+			hs.hitsTotal += hits
+			mLock.Unlock()
+		}
+		blockResultPool.Put(bb)
+	}
+
+	// Execute the query
+	if err := vlstorage.RunQuery(ctx, tenantIDs, q, writeBlock); err != nil {
+		httpserver.Errorf(w, r, "cannot execute query [%s]: %s", q, err)
+		return
+	}
+
+	m = getTopHitsSeries(m, fieldsLimit)
+
+	// Write response
+	w.Header().Set("Content-Type", "application/json")
+	WriteHitsSeries(w, m)
+}
+
+func getTopHitsSeries(m map[string]*hitsSeries, fieldsLimit int) map[string]*hitsSeries {
+	if fieldsLimit <= 0 || fieldsLimit >= len(m) {
+		return m
+	}
+
+	type fieldsHits struct {
+		fieldsStr string
+		hs        *hitsSeries
+	}
+	a := make([]fieldsHits, 0, len(m))
+	for fieldsStr, hs := range m {
+		a = append(a, fieldsHits{
+			fieldsStr: fieldsStr,
+			hs:        hs,
+		})
+	}
+	sort.Slice(a, func(i, j int) bool {
+		return a[i].hs.hitsTotal > a[j].hs.hitsTotal
+	})
+
+	hitsOther := make(map[string]uint64)
+	for _, x := range a[fieldsLimit:] {
+		for i, timestampStr := range x.hs.timestamps {
+			hitsOther[timestampStr] += x.hs.hits[i]
+		}
+	}
+	var hsOther hitsSeries
+	for timestampStr, hits := range hitsOther {
+		hsOther.timestamps = append(hsOther.timestamps, timestampStr)
+		hsOther.hits = append(hsOther.hits, hits)
+		hsOther.hitsTotal += hits
+	}
+
+	mNew := make(map[string]*hitsSeries, fieldsLimit+1)
+	for _, x := range a[:fieldsLimit] {
+		mNew[x.fieldsStr] = x.hs
+	}
+	mNew["{}"] = &hsOther
+
+	return mNew
+}
+
+type hitsSeries struct {
+	hitsTotal  uint64
+	timestamps []string
+	hits       []uint64
+}
+
+func (hs *hitsSeries) sort() {
+	sort.Sort(hs)
+}
+
+func (hs *hitsSeries) Len() int {
+	return len(hs.timestamps)
+}
+
+func (hs *hitsSeries) Swap(i, j int) {
+	hs.timestamps[i], hs.timestamps[j] = hs.timestamps[j], hs.timestamps[i]
+	hs.hits[i], hs.hits[j] = hs.hits[j], hs.hits[i]
+}
+
+func (hs *hitsSeries) Less(i, j int) bool {
+	return hs.timestamps[i] < hs.timestamps[j]
+}
+
+// ProcessFieldNamesRequest handles /select/logsql/field_names request.
+//
+// See https://docs.victoriametrics.com/victorialogs/querying/#querying-field-names
+func ProcessFieldNamesRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	// Obtain field names for the given query
+	q.Optimize()
+	fieldNames, err := vlstorage.GetFieldNames(ctx, tenantIDs, q)
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot obtain field names: %s", err)
+		return
+	}
+
+	// Write results
+	w.Header().Set("Content-Type", "application/json")
+	WriteValuesWithHitsJSON(w, fieldNames)
+}
+
+// ProcessFieldValuesRequest handles /select/logsql/field_values request.
+//
+// See https://docs.victoriametrics.com/victorialogs/querying/#querying-field-values
+func ProcessFieldValuesRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	// Parse fieldName query arg
+	fieldName := r.FormValue("field")
+	if fieldName == "" {
+		httpserver.Errorf(w, r, "missing 'field' query arg")
+		return
+	}
+
+	// Parse limit query arg
+	limit, err := httputils.GetInt(r, "limit")
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	if limit < 0 {
+		limit = 0
+	}
+
+	// Obtain unique values for the given field
+	q.Optimize()
+	values, err := vlstorage.GetFieldValues(ctx, tenantIDs, q, fieldName, uint64(limit))
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot obtain values for field %q: %s", fieldName, err)
+		return
+	}
+
+	// Write results
+	w.Header().Set("Content-Type", "application/json")
+	WriteValuesWithHitsJSON(w, values)
+}
+
+// ProcessStreamFieldNamesRequest processes /select/logsql/stream_field_names request.
+//
+// See https://docs.victoriametrics.com/victorialogs/querying/#querying-stream-field-names
+func ProcessStreamFieldNamesRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	// Obtain stream field names for the given query
+	q.Optimize()
+	names, err := vlstorage.GetStreamFieldNames(ctx, tenantIDs, q)
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot obtain stream field names: %s", err)
+	}
+
+	// Write results
+	w.Header().Set("Content-Type", "application/json")
+	WriteValuesWithHitsJSON(w, names)
+}
+
+// ProcessStreamFieldValuesRequest processes /select/logsql/stream_field_values request.
+//
+// See https://docs.victoriametrics.com/victorialogs/querying/#querying-stream-field-values
+func ProcessStreamFieldValuesRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	// Parse fieldName query arg
+	fieldName := r.FormValue("field")
+	if fieldName == "" {
+		httpserver.Errorf(w, r, "missing 'field' query arg")
+		return
+	}
+
+	// Parse limit query arg
+	limit, err := httputils.GetInt(r, "limit")
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	if limit < 0 {
+		limit = 0
+	}
+
+	// Obtain stream field values for the given query and the given fieldName
+	q.Optimize()
+	values, err := vlstorage.GetStreamFieldValues(ctx, tenantIDs, q, fieldName, uint64(limit))
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot obtain stream field values: %s", err)
+	}
+
+	// Write results
+	w.Header().Set("Content-Type", "application/json")
+	WriteValuesWithHitsJSON(w, values)
+}
+
+// ProcessStreamIDsRequest processes /select/logsql/stream_ids request.
+//
+// See https://docs.victoriametrics.com/victorialogs/querying/#querying-stream_ids
+func ProcessStreamIDsRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	// Parse limit query arg
+	limit, err := httputils.GetInt(r, "limit")
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	if limit < 0 {
+		limit = 0
+	}
+
+	// Obtain streamIDs for the given query
+	q.Optimize()
+	streamIDs, err := vlstorage.GetStreamIDs(ctx, tenantIDs, q, uint64(limit))
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot obtain stream_ids: %s", err)
+	}
+
+	// Write results
+	w.Header().Set("Content-Type", "application/json")
+	WriteValuesWithHitsJSON(w, streamIDs)
+}
+
+// ProcessStreamsRequest processes /select/logsql/streams request.
+//
+// See https://docs.victoriametrics.com/victorialogs/querying/#querying-streams
+func ProcessStreamsRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	// Parse limit query arg
+	limit, err := httputils.GetInt(r, "limit")
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	if limit < 0 {
+		limit = 0
+	}
+
+	// Obtain streams for the given query
+	q.Optimize()
+	streams, err := vlstorage.GetStreams(ctx, tenantIDs, q, uint64(limit))
+	if err != nil {
+		httpserver.Errorf(w, r, "cannot obtain streams: %s", err)
+	}
+
+	// Write results
+	w.Header().Set("Content-Type", "application/json")
+	WriteValuesWithHitsJSON(w, streams)
+}
+
+// ProcessLiveTailRequest processes live tailing request to /select/logsq/tail
+func ProcessLiveTailRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	liveTailRequests.Inc()
+	defer liveTailRequests.Dec()
+
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	if !q.CanLiveTail() {
+		httpserver.Errorf(w, r, "the query [%s] cannot be used in live tailing; see https://docs.victoriametrics.com/victorialogs/querying/#live-tailing for details", q)
+	}
+	q.Optimize()
+
+	refreshIntervalMsecs, err := httputils.GetDuration(r, "refresh_interval", 1000)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+	refreshInterval := time.Millisecond * time.Duration(refreshIntervalMsecs)
+
+	ctxWithCancel, cancel := context.WithCancel(ctx)
+	tp := newTailProcessor(cancel)
+
+	ticker := time.NewTicker(refreshInterval)
+	defer ticker.Stop()
+
+	end := time.Now().UnixNano()
+	doneCh := ctxWithCancel.Done()
+	flusher, ok := w.(http.Flusher)
+	if !ok {
+		logger.Panicf("BUG: it is expected that http.ResponseWriter (%T) supports http.Flusher interface", w)
+	}
+	for {
+		start := end - tailOffsetNsecs
+		end = time.Now().UnixNano()
+
+		qCopy := q.Clone()
+		qCopy.AddTimeFilter(start, end)
+		if err := vlstorage.RunQuery(ctxWithCancel, tenantIDs, qCopy, tp.writeBlock); err != nil {
+			httpserver.Errorf(w, r, "cannot execute tail query [%s]: %s", q, err)
+			return
+		}
+		resultRows, err := tp.getTailRows()
+		if err != nil {
+			httpserver.Errorf(w, r, "cannot get tail results for query [%q]: %s", q, err)
+			return
+		}
+		if len(resultRows) > 0 {
+			WriteJSONRows(w, resultRows)
+			flusher.Flush()
+		}
+
+		select {
+		case <-doneCh:
+			return
+		case <-ticker.C:
+		}
+	}
+}
+
+var liveTailRequests = metrics.NewCounter(`vl_live_tailing_requests`)
+
+const tailOffsetNsecs = 5e9
+
+type logRow struct {
+	timestamp int64
+	fields    []logstorage.Field
+}
+
+func sortLogRows(rows []logRow) {
+	sort.SliceStable(rows, func(i, j int) bool {
+		return rows[i].timestamp < rows[j].timestamp
+	})
+}
+
+type tailProcessor struct {
+	cancel func()
+
+	mu sync.Mutex
+
+	perStreamRows  map[string][]logRow
+	lastTimestamps map[string]int64
+
+	err error
+}
+
+func newTailProcessor(cancel func()) *tailProcessor {
+	return &tailProcessor{
+		cancel: cancel,
+
+		perStreamRows:  make(map[string][]logRow),
+		lastTimestamps: make(map[string]int64),
+	}
+}
+
+func (tp *tailProcessor) writeBlock(_ uint, timestamps []int64, columns []logstorage.BlockColumn) {
+	if len(timestamps) == 0 {
+		return
+	}
+
+	tp.mu.Lock()
+	defer tp.mu.Unlock()
+
+	if tp.err != nil {
+		return
+	}
+
+	// Make sure columns contain _time field, since it is needed for proper tail work.
+	hasTime := false
+	for _, c := range columns {
+		if c.Name == "_time" {
+			hasTime = true
+			break
+		}
+	}
+	if !hasTime {
+		tp.err = fmt.Errorf("missing _time field")
+		tp.cancel()
+		return
+	}
+
+	// Copy block rows to tp.perStreamRows
+	for i, timestamp := range timestamps {
+		streamID := ""
+		fields := make([]logstorage.Field, len(columns))
+		for j, c := range columns {
+			name := strings.Clone(c.Name)
+			value := strings.Clone(c.Values[i])
+
+			fields[j] = logstorage.Field{
+				Name:  name,
+				Value: value,
+			}
+
+			if name == "_stream_id" {
+				streamID = value
+			}
+		}
+
+		tp.perStreamRows[streamID] = append(tp.perStreamRows[streamID], logRow{
+			timestamp: timestamp,
+			fields:    fields,
+		})
+	}
+}
+
+func (tp *tailProcessor) getTailRows() ([][]logstorage.Field, error) {
+	if tp.err != nil {
+		return nil, tp.err
+	}
+
+	var resultRows []logRow
+	for streamID, rows := range tp.perStreamRows {
+		sortLogRows(rows)
+
+		lastTimestamp, ok := tp.lastTimestamps[streamID]
+		if ok {
+			// Skip already written rows
+			for len(rows) > 0 && rows[0].timestamp <= lastTimestamp {
+				rows = rows[1:]
+			}
+		}
+		if len(rows) > 0 {
+			resultRows = append(resultRows, rows...)
+			tp.lastTimestamps[streamID] = rows[len(rows)-1].timestamp
+		}
+	}
+	clear(tp.perStreamRows)
+
+	sortLogRows(resultRows)
+
+	tailRows := make([][]logstorage.Field, len(resultRows))
+	for i, row := range resultRows {
+		tailRows[i] = row.fields
+	}
+
+	return tailRows, nil
+}
+
+// ProcessQueryRequest handles /select/logsql/query request.
+//
+// See https://docs.victoriametrics.com/victorialogs/querying/#http-api
+func ProcessQueryRequest(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	q, tenantIDs, err := parseCommonArgs(r)
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	// Parse limit query arg
+	limit, err := httputils.GetInt(r, "limit")
+	if err != nil {
+		httpserver.Errorf(w, r, "%s", err)
+		return
+	}
+
+	bw := getBufferedWriter(w)
+	defer func() {
+		bw.FlushIgnoreErrors()
+		putBufferedWriter(bw)
+	}()
+	w.Header().Set("Content-Type", "application/stream+json")
+
+	if limit > 0 {
+		if q.CanReturnLastNResults() {
+			rows, err := getLastNQueryResults(ctx, tenantIDs, q, limit)
+			if err != nil {
+				httpserver.Errorf(w, r, "%s", err)
+				return
+			}
+			bb := blockResultPool.Get()
+			b := bb.B
+			for i := range rows {
+				b = logstorage.MarshalFieldsToJSON(b[:0], rows[i].fields)
+				b = append(b, '\n')
+				bw.WriteIgnoreErrors(b)
+			}
+			bb.B = b
+			blockResultPool.Put(bb)
+			return
+		}
+
+		q.AddPipeLimit(uint64(limit))
+	}
+	q.Optimize()
+
+	writeBlock := func(_ uint, timestamps []int64, columns []logstorage.BlockColumn) {
+		if len(columns) == 0 || len(columns[0].Values) == 0 {
+			return
+		}
+
+		bb := blockResultPool.Get()
+		for i := range timestamps {
+			WriteJSONRow(bb, columns, i)
+		}
+		bw.WriteIgnoreErrors(bb.B)
+		blockResultPool.Put(bb)
+	}
+
+	if err := vlstorage.RunQuery(ctx, tenantIDs, q, writeBlock); err != nil {
+		httpserver.Errorf(w, r, "cannot execute query [%s]: %s", q, err)
+		return
+	}
+}
+
+var blockResultPool bytesutil.ByteBufferPool
+
+type row struct {
+	timestamp int64
+	fields    []logstorage.Field
+}
+
+func getLastNQueryResults(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, limit int) ([]row, error) {
+	limitUpper := 2 * limit
+	q.AddPipeLimit(uint64(limitUpper))
+	q.Optimize()
+	rows, err := getQueryResultsWithLimit(ctx, tenantIDs, q, limitUpper)
+	if err != nil {
+		return nil, err
+	}
+	if len(rows) < limitUpper {
+		// Fast path - the requested time range contains up to limitUpper rows.
+		rows = getLastNRows(rows, limit)
+		return rows, nil
+	}
+
+	// Slow path - search for the time range containing up to limitUpper rows.
+	start, end := q.GetFilterTimeRange()
+	d := end/2 - start/2
+	start += d
+
+	qOrig := q
+	for {
+		q = qOrig.Clone()
+		q.AddTimeFilter(start, end)
+		rows, err := getQueryResultsWithLimit(ctx, tenantIDs, q, limitUpper)
+		if err != nil {
+			return nil, err
+		}
+
+		if len(rows) >= limit && len(rows) < limitUpper || d == 0 {
+			rows = getLastNRows(rows, limit)
+			return rows, nil
+		}
+
+		lastBit := d & 1
+		d /= 2
+		if len(rows) > limit {
+			start += d
+		} else {
+			start -= d + lastBit
+		}
+	}
+}
+
+func getLastNRows(rows []row, limit int) []row {
+	sort.Slice(rows, func(i, j int) bool {
+		return rows[i].timestamp < rows[j].timestamp
+	})
+	if len(rows) > limit {
+		rows = rows[len(rows)-limit:]
+	}
+	return rows
+}
+
+func getQueryResultsWithLimit(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, limit int) ([]row, error) {
+	ctxWithCancel, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	var rows []row
+	var rowsLock sync.Mutex
+	writeBlock := func(_ uint, timestamps []int64, columns []logstorage.BlockColumn) {
+		rowsLock.Lock()
+		defer rowsLock.Unlock()
+
+		for i, timestamp := range timestamps {
+			fields := make([]logstorage.Field, len(columns))
+			for j := range columns {
+				f := &fields[j]
+				f.Name = strings.Clone(columns[j].Name)
+				f.Value = strings.Clone(columns[j].Values[i])
+			}
+			rows = append(rows, row{
+				timestamp: timestamp,
+				fields:    fields,
+			})
+		}
+
+		if len(rows) >= limit {
+			cancel()
+		}
+	}
+	if err := vlstorage.RunQuery(ctxWithCancel, tenantIDs, q, writeBlock); err != nil {
+		return nil, err
+	}
+
+	return rows, nil
+}
+
+func parseCommonArgs(r *http.Request) (*logstorage.Query, []logstorage.TenantID, error) {
+	// Extract tenantID
+	tenantID, err := logstorage.GetTenantIDFromRequest(r)
+	if err != nil {
+		return nil, nil, fmt.Errorf("cannot obtain tenanID: %w", err)
+	}
+	tenantIDs := []logstorage.TenantID{tenantID}
+
+	// Parse query
+	qStr := r.FormValue("query")
+	q, err := logstorage.ParseQuery(qStr)
+	if err != nil {
+		return nil, nil, fmt.Errorf("cannot parse query [%s]: %s", qStr, err)
+	}
+
+	// Parse optional start and end args
+	start, okStart, err := getTimeNsec(r, "start")
+	if err != nil {
+		return nil, nil, err
+	}
+	end, okEnd, err := getTimeNsec(r, "end")
+	if err != nil {
+		return nil, nil, err
+	}
+	if okStart || okEnd {
+		if !okStart {
+			start = math.MinInt64
+		}
+		if !okEnd {
+			end = math.MaxInt64
+		}
+		q.AddTimeFilter(start, end)
+	}
+
+	return q, tenantIDs, nil
+}
+
+func getTimeNsec(r *http.Request, argName string) (int64, bool, error) {
+	s := r.FormValue(argName)
+	if s == "" {
+		return 0, false, nil
+	}
+	currentTimestamp := time.Now().UnixNano()
+	nsecs, err := promutils.ParseTimeAt(s, currentTimestamp)
+	if err != nil {
+		return 0, false, fmt.Errorf("cannot parse %s=%s: %w", argName, s, err)
+	}
+	return nsecs, true, nil
+}

app/vlselect/logsql/logsql.qtpl

@@ -0,0 +1,32 @@
+{% import (
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+) %}
+
+{% stripspace %}
+
+// ValuesWithHitsJSON generates JSON from the given values.
+{% func ValuesWithHitsJSON(values []logstorage.ValueWithHits) %}
+{
+	"values":{%= valuesWithHitsJSONArray(values) %}
+}
+{% endfunc %}
+
+{% func valuesWithHitsJSONArray(values []logstorage.ValueWithHits) %}
+[
+	{% if len(values) > 0 %}
+		{%= valueWithHitsJSON(values[0]) %}
+		{% for _, v := range values[1:] %}
+			,{%= valueWithHitsJSON(v) %}
+		{% endfor %}
+	{% endif %}
+]
+{% endfunc %}
+
+{% func valueWithHitsJSON(v logstorage.ValueWithHits) %}
+{
+	"value":{%q= v.Value %},
+	"hits":{%dul= v.Hits %}
+}
+{% endfunc %}
+
+{% endstripspace %}

app/vlselect/logsql/logsql.qtpl.go

@@ -0,0 +1,152 @@
+// Code generated by qtc from "logsql.qtpl". DO NOT EDIT.
+// See https://github.com/valyala/quicktemplate for details.
+
+//line app/vlselect/logsql/logsql.qtpl:1
+package logsql
+
+//line app/vlselect/logsql/logsql.qtpl:1
+import (
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+)
+
+// ValuesWithHitsJSON generates JSON from the given values.
+
+//line app/vlselect/logsql/logsql.qtpl:8
+import (
+	qtio422016 "io"
+
+	qt422016 "github.com/valyala/quicktemplate"
+)
+
+//line app/vlselect/logsql/logsql.qtpl:8
+var (
+	_ = qtio422016.Copy
+	_ = qt422016.AcquireByteBuffer
+)
+
+//line app/vlselect/logsql/logsql.qtpl:8
+func StreamValuesWithHitsJSON(qw422016 *qt422016.Writer, values []logstorage.ValueWithHits) {
+//line app/vlselect/logsql/logsql.qtpl:8
+	qw422016.N().S(`{"values":`)
+//line app/vlselect/logsql/logsql.qtpl:10
+	streamvaluesWithHitsJSONArray(qw422016, values)
+//line app/vlselect/logsql/logsql.qtpl:10
+	qw422016.N().S(`}`)
+//line app/vlselect/logsql/logsql.qtpl:12
+}
+
+//line app/vlselect/logsql/logsql.qtpl:12
+func WriteValuesWithHitsJSON(qq422016 qtio422016.Writer, values []logstorage.ValueWithHits) {
+//line app/vlselect/logsql/logsql.qtpl:12
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlselect/logsql/logsql.qtpl:12
+	StreamValuesWithHitsJSON(qw422016, values)
+//line app/vlselect/logsql/logsql.qtpl:12
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlselect/logsql/logsql.qtpl:12
+}
+
+//line app/vlselect/logsql/logsql.qtpl:12
+func ValuesWithHitsJSON(values []logstorage.ValueWithHits) string {
+//line app/vlselect/logsql/logsql.qtpl:12
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlselect/logsql/logsql.qtpl:12
+	WriteValuesWithHitsJSON(qb422016, values)
+//line app/vlselect/logsql/logsql.qtpl:12
+	qs422016 := string(qb422016.B)
+//line app/vlselect/logsql/logsql.qtpl:12
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlselect/logsql/logsql.qtpl:12
+	return qs422016
+//line app/vlselect/logsql/logsql.qtpl:12
+}
+
+//line app/vlselect/logsql/logsql.qtpl:14
+func streamvaluesWithHitsJSONArray(qw422016 *qt422016.Writer, values []logstorage.ValueWithHits) {
+//line app/vlselect/logsql/logsql.qtpl:14
+	qw422016.N().S(`[`)
+//line app/vlselect/logsql/logsql.qtpl:16
+	if len(values) > 0 {
+//line app/vlselect/logsql/logsql.qtpl:17
+		streamvalueWithHitsJSON(qw422016, values[0])
+//line app/vlselect/logsql/logsql.qtpl:18
+		for _, v := range values[1:] {
+//line app/vlselect/logsql/logsql.qtpl:18
+			qw422016.N().S(`,`)
+//line app/vlselect/logsql/logsql.qtpl:19
+			streamvalueWithHitsJSON(qw422016, v)
+//line app/vlselect/logsql/logsql.qtpl:20
+		}
+//line app/vlselect/logsql/logsql.qtpl:21
+	}
+//line app/vlselect/logsql/logsql.qtpl:21
+	qw422016.N().S(`]`)
+//line app/vlselect/logsql/logsql.qtpl:23
+}
+
+//line app/vlselect/logsql/logsql.qtpl:23
+func writevaluesWithHitsJSONArray(qq422016 qtio422016.Writer, values []logstorage.ValueWithHits) {
+//line app/vlselect/logsql/logsql.qtpl:23
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlselect/logsql/logsql.qtpl:23
+	streamvaluesWithHitsJSONArray(qw422016, values)
+//line app/vlselect/logsql/logsql.qtpl:23
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlselect/logsql/logsql.qtpl:23
+}
+
+//line app/vlselect/logsql/logsql.qtpl:23
+func valuesWithHitsJSONArray(values []logstorage.ValueWithHits) string {
+//line app/vlselect/logsql/logsql.qtpl:23
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlselect/logsql/logsql.qtpl:23
+	writevaluesWithHitsJSONArray(qb422016, values)
+//line app/vlselect/logsql/logsql.qtpl:23
+	qs422016 := string(qb422016.B)
+//line app/vlselect/logsql/logsql.qtpl:23
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlselect/logsql/logsql.qtpl:23
+	return qs422016
+//line app/vlselect/logsql/logsql.qtpl:23
+}
+
+//line app/vlselect/logsql/logsql.qtpl:25
+func streamvalueWithHitsJSON(qw422016 *qt422016.Writer, v logstorage.ValueWithHits) {
+//line app/vlselect/logsql/logsql.qtpl:25
+	qw422016.N().S(`{"value":`)
+//line app/vlselect/logsql/logsql.qtpl:27
+	qw422016.N().Q(v.Value)
+//line app/vlselect/logsql/logsql.qtpl:27
+	qw422016.N().S(`,"hits":`)
+//line app/vlselect/logsql/logsql.qtpl:28
+	qw422016.N().DUL(v.Hits)
+//line app/vlselect/logsql/logsql.qtpl:28
+	qw422016.N().S(`}`)
+//line app/vlselect/logsql/logsql.qtpl:30
+}
+
+//line app/vlselect/logsql/logsql.qtpl:30
+func writevalueWithHitsJSON(qq422016 qtio422016.Writer, v logstorage.ValueWithHits) {
+//line app/vlselect/logsql/logsql.qtpl:30
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlselect/logsql/logsql.qtpl:30
+	streamvalueWithHitsJSON(qw422016, v)
+//line app/vlselect/logsql/logsql.qtpl:30
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlselect/logsql/logsql.qtpl:30
+}
+
+//line app/vlselect/logsql/logsql.qtpl:30
+func valueWithHitsJSON(v logstorage.ValueWithHits) string {
+//line app/vlselect/logsql/logsql.qtpl:30
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlselect/logsql/logsql.qtpl:30
+	writevalueWithHitsJSON(qb422016, v)
+//line app/vlselect/logsql/logsql.qtpl:30
+	qs422016 := string(qb422016.B)
+//line app/vlselect/logsql/logsql.qtpl:30
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlselect/logsql/logsql.qtpl:30
+	return qs422016
+//line app/vlselect/logsql/logsql.qtpl:30
+}

app/vlselect/logsql/query_response.qtpl

@@ -0,0 +1,41 @@
+{% import (
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+) %}
+
+{% stripspace %}
+
+// JSONRow creates JSON row from the given fields.
+{% func JSONRow(columns []logstorage.BlockColumn, rowIdx int) %}
+{
+	{% code c := &columns[0] %}
+	{%q= c.Name %}:{%q= c.Values[rowIdx] %}
+	{% code columns = columns[1:] %}
+	{% for colIdx := range columns %}
+		{% code c := &columns[colIdx] %}
+		,{%q= c.Name %}:{%q= c.Values[rowIdx] %}
+	{% endfor %}
+}{% newline %}
+{% endfunc %}
+
+// JSONRows prints formatted rows
+{% func JSONRows(rows [][]logstorage.Field) %}
+	{% if len(rows) == 0 %}
+		{% return %}
+	{% endif %}
+	{% for _, fields := range rows %}
+	{
+		{% if len(fields) > 0 %}
+			{% code
+				f := fields[0]
+				fields = fields[1:]
+			%}
+			{%q= f.Name %}:{%q= f.Value %}
+			{% for _, f := range fields %}
+				,{%q= f.Name %}:{%q= f.Value %}
+			{% endfor %}
+		{% endif %}
+	}{% newline %}
+	{% endfor %}
+{% endfunc %}
+
+{% endstripspace %}

app/vlselect/logsql/query_response.qtpl.go

@@ -0,0 +1,166 @@
+// Code generated by qtc from "query_response.qtpl". DO NOT EDIT.
+// See https://github.com/valyala/quicktemplate for details.
+
+//line app/vlselect/logsql/query_response.qtpl:1
+package logsql
+
+//line app/vlselect/logsql/query_response.qtpl:1
+import (
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+)
+
+// JSONRow creates JSON row from the given fields.
+
+//line app/vlselect/logsql/query_response.qtpl:8
+import (
+	qtio422016 "io"
+
+	qt422016 "github.com/valyala/quicktemplate"
+)
+
+//line app/vlselect/logsql/query_response.qtpl:8
+var (
+	_ = qtio422016.Copy
+	_ = qt422016.AcquireByteBuffer
+)
+
+//line app/vlselect/logsql/query_response.qtpl:8
+func StreamJSONRow(qw422016 *qt422016.Writer, columns []logstorage.BlockColumn, rowIdx int) {
+//line app/vlselect/logsql/query_response.qtpl:8
+	qw422016.N().S(`{`)
+//line app/vlselect/logsql/query_response.qtpl:10
+	c := &columns[0]
+
+//line app/vlselect/logsql/query_response.qtpl:11
+	qw422016.N().Q(c.Name)
+//line app/vlselect/logsql/query_response.qtpl:11
+	qw422016.N().S(`:`)
+//line app/vlselect/logsql/query_response.qtpl:11
+	qw422016.N().Q(c.Values[rowIdx])
+//line app/vlselect/logsql/query_response.qtpl:12
+	columns = columns[1:]
+
+//line app/vlselect/logsql/query_response.qtpl:13
+	for colIdx := range columns {
+//line app/vlselect/logsql/query_response.qtpl:14
+		c := &columns[colIdx]
+
+//line app/vlselect/logsql/query_response.qtpl:14
+		qw422016.N().S(`,`)
+//line app/vlselect/logsql/query_response.qtpl:15
+		qw422016.N().Q(c.Name)
+//line app/vlselect/logsql/query_response.qtpl:15
+		qw422016.N().S(`:`)
+//line app/vlselect/logsql/query_response.qtpl:15
+		qw422016.N().Q(c.Values[rowIdx])
+//line app/vlselect/logsql/query_response.qtpl:16
+	}
+//line app/vlselect/logsql/query_response.qtpl:16
+	qw422016.N().S(`}`)
+//line app/vlselect/logsql/query_response.qtpl:17
+	qw422016.N().S(`
+`)
+//line app/vlselect/logsql/query_response.qtpl:18
+}
+
+//line app/vlselect/logsql/query_response.qtpl:18
+func WriteJSONRow(qq422016 qtio422016.Writer, columns []logstorage.BlockColumn, rowIdx int) {
+//line app/vlselect/logsql/query_response.qtpl:18
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlselect/logsql/query_response.qtpl:18
+	StreamJSONRow(qw422016, columns, rowIdx)
+//line app/vlselect/logsql/query_response.qtpl:18
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlselect/logsql/query_response.qtpl:18
+}
+
+//line app/vlselect/logsql/query_response.qtpl:18
+func JSONRow(columns []logstorage.BlockColumn, rowIdx int) string {
+//line app/vlselect/logsql/query_response.qtpl:18
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlselect/logsql/query_response.qtpl:18
+	WriteJSONRow(qb422016, columns, rowIdx)
+//line app/vlselect/logsql/query_response.qtpl:18
+	qs422016 := string(qb422016.B)
+//line app/vlselect/logsql/query_response.qtpl:18
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlselect/logsql/query_response.qtpl:18
+	return qs422016
+//line app/vlselect/logsql/query_response.qtpl:18
+}
+
+// JSONRows prints formatted rows
+
+//line app/vlselect/logsql/query_response.qtpl:21
+func StreamJSONRows(qw422016 *qt422016.Writer, rows [][]logstorage.Field) {
+//line app/vlselect/logsql/query_response.qtpl:22
+	if len(rows) == 0 {
+//line app/vlselect/logsql/query_response.qtpl:23
+		return
+//line app/vlselect/logsql/query_response.qtpl:24
+	}
+//line app/vlselect/logsql/query_response.qtpl:25
+	for _, fields := range rows {
+//line app/vlselect/logsql/query_response.qtpl:25
+		qw422016.N().S(`{`)
+//line app/vlselect/logsql/query_response.qtpl:27
+		if len(fields) > 0 {
+//line app/vlselect/logsql/query_response.qtpl:29
+			f := fields[0]
+			fields = fields[1:]
+
+//line app/vlselect/logsql/query_response.qtpl:32
+			qw422016.N().Q(f.Name)
+//line app/vlselect/logsql/query_response.qtpl:32
+			qw422016.N().S(`:`)
+//line app/vlselect/logsql/query_response.qtpl:32
+			qw422016.N().Q(f.Value)
+//line app/vlselect/logsql/query_response.qtpl:33
+			for _, f := range fields {
+//line app/vlselect/logsql/query_response.qtpl:33
+				qw422016.N().S(`,`)
+//line app/vlselect/logsql/query_response.qtpl:34
+				qw422016.N().Q(f.Name)
+//line app/vlselect/logsql/query_response.qtpl:34
+				qw422016.N().S(`:`)
+//line app/vlselect/logsql/query_response.qtpl:34
+				qw422016.N().Q(f.Value)
+//line app/vlselect/logsql/query_response.qtpl:35
+			}
+//line app/vlselect/logsql/query_response.qtpl:36
+		}
+//line app/vlselect/logsql/query_response.qtpl:36
+		qw422016.N().S(`}`)
+//line app/vlselect/logsql/query_response.qtpl:37
+		qw422016.N().S(`
+`)
+//line app/vlselect/logsql/query_response.qtpl:38
+	}
+//line app/vlselect/logsql/query_response.qtpl:39
+}
+
+//line app/vlselect/logsql/query_response.qtpl:39
+func WriteJSONRows(qq422016 qtio422016.Writer, rows [][]logstorage.Field) {
+//line app/vlselect/logsql/query_response.qtpl:39
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line app/vlselect/logsql/query_response.qtpl:39
+	StreamJSONRows(qw422016, rows)
+//line app/vlselect/logsql/query_response.qtpl:39
+	qt422016.ReleaseWriter(qw422016)
+//line app/vlselect/logsql/query_response.qtpl:39
+}
+
+//line app/vlselect/logsql/query_response.qtpl:39
+func JSONRows(rows [][]logstorage.Field) string {
+//line app/vlselect/logsql/query_response.qtpl:39
+	qb422016 := qt422016.AcquireByteBuffer()
+//line app/vlselect/logsql/query_response.qtpl:39
+	WriteJSONRows(qb422016, rows)
+//line app/vlselect/logsql/query_response.qtpl:39
+	qs422016 := string(qb422016.B)
+//line app/vlselect/logsql/query_response.qtpl:39
+	qt422016.ReleaseByteBuffer(qb422016)
+//line app/vlselect/logsql/query_response.qtpl:39
+	return qs422016
+//line app/vlselect/logsql/query_response.qtpl:39
+}

app/vlselect/main.go

@@ -0,0 +1,240 @@
+package vlselect
+
+import (
+	"context"
+	"embed"
+	"flag"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/app/vlselect/logsql"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httputils"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/metrics"
+)
+
+var (
+	maxConcurrentRequests = flag.Int("search.maxConcurrentRequests", getDefaultMaxConcurrentRequests(), "The maximum number of concurrent search requests. "+
+		"It shouldn't be high, since a single request can saturate all the CPU cores, while many concurrently executed requests may require high amounts of memory. "+
+		"See also -search.maxQueueDuration")
+	maxQueueDuration = flag.Duration("search.maxQueueDuration", 10*time.Second, "The maximum time the search request waits for execution when -search.maxConcurrentRequests "+
+		"limit is reached; see also -search.maxQueryDuration")
+	maxQueryDuration = flag.Duration("search.maxQueryDuration", time.Second*30, "The maximum duration for query execution. It can be overridden on a per-query basis via 'timeout' query arg")
+)
+
+func getDefaultMaxConcurrentRequests() int {
+	n := cgroup.AvailableCPUs()
+	if n <= 4 {
+		n *= 2
+	}
+	if n > 16 {
+		// A single request can saturate all the CPU cores, so there is no sense
+		// in allowing higher number of concurrent requests - they will just contend
+		// for unavailable CPU time.
+		n = 16
+	}
+	return n
+}
+
+// Init initializes vlselect
+func Init() {
+	concurrencyLimitCh = make(chan struct{}, *maxConcurrentRequests)
+}
+
+// Stop stops vlselect
+func Stop() {
+}
+
+var concurrencyLimitCh chan struct{}
+
+var (
+	concurrencyLimitReached = metrics.NewCounter(`vl_concurrent_select_limit_reached_total`)
+	concurrencyLimitTimeout = metrics.NewCounter(`vl_concurrent_select_limit_timeout_total`)
+
+	_ = metrics.NewGauge(`vl_concurrent_select_capacity`, func() float64 {
+		return float64(cap(concurrencyLimitCh))
+	})
+	_ = metrics.NewGauge(`vl_concurrent_select_current`, func() float64 {
+		return float64(len(concurrencyLimitCh))
+	})
+)
+
+//go:embed vmui
+var vmuiFiles embed.FS
+
+var vmuiFileServer = http.FileServer(http.FS(vmuiFiles))
+
+// RequestHandler handles select requests for VictoriaLogs
+func RequestHandler(w http.ResponseWriter, r *http.Request) bool {
+	path := r.URL.Path
+	if !strings.HasPrefix(path, "/select/") {
+		// Skip requests, which do not start with /select/, since these aren't our requests.
+		return false
+	}
+	path = strings.ReplaceAll(path, "//", "/")
+
+	if path == "/select/vmui" {
+		// VMUI access via incomplete url without `/` in the end. Redirect to complete url.
+		// Use relative redirect, since the hostname and path prefix may be incorrect if VictoriaMetrics
+		// is hidden behind vmauth or similar proxy.
+		_ = r.ParseForm()
+		newURL := "vmui/?" + r.Form.Encode()
+		httpserver.Redirect(w, newURL)
+		return true
+	}
+	if strings.HasPrefix(path, "/select/vmui/") {
+		if strings.HasPrefix(path, "/select/vmui/static/") {
+			// Allow clients caching static contents for long period of time, since it shouldn't change over time.
+			// Path to static contents (such as js and css) must be changed whenever its contents is changed.
+			// See https://developer.chrome.com/docs/lighthouse/performance/uses-long-cache-ttl/
+			w.Header().Set("Cache-Control", "max-age=31536000")
+		}
+		r.URL.Path = strings.TrimPrefix(path, "/select")
+		vmuiFileServer.ServeHTTP(w, r)
+		return true
+	}
+
+	// Limit the number of concurrent queries, which can consume big amounts of CPU time.
+	startTime := time.Now()
+	ctx := r.Context()
+	d := getMaxQueryDuration(r)
+	ctxWithTimeout, cancel := context.WithTimeout(ctx, d)
+	defer cancel()
+
+	stopCh := ctxWithTimeout.Done()
+	select {
+	case concurrencyLimitCh <- struct{}{}:
+		defer func() { <-concurrencyLimitCh }()
+	default:
+		// Sleep for a while until giving up. This should resolve short bursts in requests.
+		concurrencyLimitReached.Inc()
+		select {
+		case concurrencyLimitCh <- struct{}{}:
+			defer func() { <-concurrencyLimitCh }()
+		case <-stopCh:
+			switch ctxWithTimeout.Err() {
+			case context.Canceled:
+				remoteAddr := httpserver.GetQuotedRemoteAddr(r)
+				requestURI := httpserver.GetRequestURI(r)
+				logger.Infof("client has canceled the pending request after %.3f seconds: remoteAddr=%s, requestURI: %q",
+					time.Since(startTime).Seconds(), remoteAddr, requestURI)
+			case context.DeadlineExceeded:
+				concurrencyLimitTimeout.Inc()
+				err := &httpserver.ErrorWithStatusCode{
+					Err: fmt.Errorf("couldn't start executing the request in %.3f seconds, since -search.maxConcurrentRequests=%d concurrent requests "+
+						"are executed. Possible solutions: to reduce query load; to add more compute resources to the server; "+
+						"to increase -search.maxQueueDuration=%s; to increase -search.maxQueryDuration=%s; to increase -search.maxConcurrentRequests; "+
+						"to pass bigger value to 'timeout' query arg",
+						d.Seconds(), *maxConcurrentRequests, maxQueueDuration, maxQueryDuration),
+					StatusCode: http.StatusServiceUnavailable,
+				}
+				httpserver.Errorf(w, r, "%s", err)
+			}
+			return true
+		}
+	}
+
+	if path == "/select/logsql/tail" {
+		logsqlTailRequests.Inc()
+		// Process live tailing request without timeout (e.g. use ctx instead of ctxWithTimeout),
+		// since it is OK to run live tailing requests for very long time.
+		logsql.ProcessLiveTailRequest(ctx, w, r)
+		return true
+	}
+
+	ok := processSelectRequest(ctxWithTimeout, w, r, path)
+	if !ok {
+		return false
+	}
+
+	err := ctxWithTimeout.Err()
+	switch err {
+	case nil:
+		// nothing to do
+	case context.Canceled:
+		remoteAddr := httpserver.GetQuotedRemoteAddr(r)
+		requestURI := httpserver.GetRequestURI(r)
+		logger.Infof("client has canceled the request after %.3f seconds: remoteAddr=%s, requestURI: %q",
+			time.Since(startTime).Seconds(), remoteAddr, requestURI)
+	case context.DeadlineExceeded:
+		err = &httpserver.ErrorWithStatusCode{
+			Err: fmt.Errorf("the request couldn't be executed in %.3f seconds; possible solutions: "+
+				"to increase -search.maxQueryDuration=%s; to pass bigger value to 'timeout' query arg", d.Seconds(), maxQueryDuration),
+			StatusCode: http.StatusServiceUnavailable,
+		}
+		httpserver.Errorf(w, r, "%s", err)
+	default:
+		httpserver.Errorf(w, r, "unexpected error: %s", err)
+	}
+
+	return true
+}
+
+func processSelectRequest(ctx context.Context, w http.ResponseWriter, r *http.Request, path string) bool {
+	httpserver.EnableCORS(w, r)
+	switch path {
+	case "/select/logsql/field_names":
+		logsqlFieldNamesRequests.Inc()
+		logsql.ProcessFieldNamesRequest(ctx, w, r)
+		return true
+	case "/select/logsql/field_values":
+		logsqlFieldValuesRequests.Inc()
+		logsql.ProcessFieldValuesRequest(ctx, w, r)
+		return true
+	case "/select/logsql/hits":
+		logsqlHitsRequests.Inc()
+		logsql.ProcessHitsRequest(ctx, w, r)
+		return true
+	case "/select/logsql/query":
+		logsqlQueryRequests.Inc()
+		logsql.ProcessQueryRequest(ctx, w, r)
+		return true
+	case "/select/logsql/stream_field_names":
+		logsqlStreamFieldNamesRequests.Inc()
+		logsql.ProcessStreamFieldNamesRequest(ctx, w, r)
+		return true
+	case "/select/logsql/stream_field_values":
+		logsqlStreamFieldValuesRequests.Inc()
+		logsql.ProcessStreamFieldValuesRequest(ctx, w, r)
+		return true
+	case "/select/logsql/stream_ids":
+		logsqlStreamIDsRequests.Inc()
+		logsql.ProcessStreamIDsRequest(ctx, w, r)
+		return true
+	case "/select/logsql/streams":
+		logsqlStreamsRequests.Inc()
+		logsql.ProcessStreamsRequest(ctx, w, r)
+		return true
+	default:
+		return false
+	}
+}
+
+// getMaxQueryDuration returns the maximum duration for query from r.
+func getMaxQueryDuration(r *http.Request) time.Duration {
+	dms, err := httputils.GetDuration(r, "timeout", 0)
+	if err != nil {
+		dms = 0
+	}
+	d := time.Duration(dms) * time.Millisecond
+	if d <= 0 || d > *maxQueryDuration {
+		d = *maxQueryDuration
+	}
+	return d
+}
+
+var (
+	logsqlFieldNamesRequests        = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/field_names"}`)
+	logsqlFieldValuesRequests       = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/field_values"}`)
+	logsqlHitsRequests              = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/hits"}`)
+	logsqlQueryRequests             = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/query"}`)
+	logsqlStreamFieldNamesRequests  = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/stream_field_names"}`)
+	logsqlStreamFieldValuesRequests = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/stream_field_values"}`)
+	logsqlStreamIDsRequests         = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/stream_ids"}`)
+	logsqlStreamsRequests           = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/streams"}`)
+	logsqlTailRequests              = metrics.NewCounter(`vl_http_requests_total{path="/select/logsql/tail"}`)
+)

app/vlselect/vmui/asset-manifest.json

@@ -0,0 +1,13 @@
+{
+  "files": {
+    "main.css": "./static/css/main.1041c3d4.css",
+    "main.js": "./static/js/main.8451d9b9.js",
+    "static/js/685.bebe1265.chunk.js": "./static/js/685.bebe1265.chunk.js",
+    "static/media/MetricsQL.md": "./static/media/MetricsQL.d46c42c8e891f06298c4.md",
+    "index.html": "./index.html"
+  },
+  "entrypoints": [
+    "static/css/main.1041c3d4.css",
+    "static/js/main.8451d9b9.js"
+  ]
+}

app/vlselect/vmui/index.html

@@ -0,0 +1 @@
+<!doctype html><html lang="en"><head><meta charset="utf-8"/><link rel="icon" href="./favicon.ico"/><meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=5"/><meta name="theme-color" content="#000000"/><meta name="description" content="UI for VictoriaMetrics"/><link rel="apple-touch-icon" href="./apple-touch-icon.png"/><link rel="icon" type="image/png" sizes="32x32" href="./favicon-32x32.png"><link rel="manifest" href="./manifest.json"/><title>VM UI</title><script src="./dashboards/index.js" type="module"></script><meta name="twitter:card" content="summary_large_image"><meta name="twitter:image" content="./preview.jpg"><meta name="twitter:title" content="UI for VictoriaMetrics"><meta name="twitter:description" content="Explore and troubleshoot your VictoriaMetrics data"><meta name="twitter:site" content="@VictoriaMetrics"><meta property="og:title" content="Metric explorer for VictoriaMetrics"><meta property="og:description" content="Explore and troubleshoot your VictoriaMetrics data"><meta property="og:image" content="./preview.jpg"><meta property="og:type" content="website"><script defer="defer" src="./static/js/main.8451d9b9.js"></script><link href="./static/css/main.1041c3d4.css" rel="stylesheet"></head><body><noscript>You need to enable JavaScript to run this app.</noscript><div id="root"></div></body></html>

app/vlselect/vmui/manifest.json

@@ -0,0 +1,20 @@
+{
+  "short_name": "Victoria Metrics UI",
+  "name": "Victoria Metrics UI is a metric explorer for Victoria Metrics",
+  "icons": [
+    {
+      "src": "favicon-32x32.png",
+      "sizes": "32x32",
+      "type": "image/png"
+    },
+    {
+      "src": "apple-touch-icon.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

app/vlselect/vmui/robots.txt

@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

app/vlselect/vmui/static/js/main.8451d9b9.js.LICENSE.txt

@@ -0,0 +1,38 @@
+/*!
+	Copyright (c) 2018 Jed Watson.
+	Licensed under the MIT License (MIT), see
+	http://jedwatson.github.io/classnames
+*/
+
+/**
+ * @remix-run/router v1.17.0
+ *
+ * Copyright (c) Remix Software Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE.md file in the root directory of this source tree.
+ *
+ * @license MIT
+ */
+
+/**
+ * React Router DOM v6.24.0
+ *
+ * Copyright (c) Remix Software Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE.md file in the root directory of this source tree.
+ *
+ * @license MIT
+ */
+
+/**
+ * React Router v6.24.0
+ *
+ * Copyright (c) Remix Software Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE.md file in the root directory of this source tree.
+ *
+ * @license MIT
+ */

app/vlstorage/README.md

@@ -1 +0,0 @@
-VictoriaLogs source code has been moved to [github.com/VictoriaMetrics/VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaLogs/).

app/vlstorage/main.go

@@ -0,0 +1,207 @@
+package vlstorage
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/VictoriaMetrics/metrics"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/fs"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
+)
+
+var (
+	retentionPeriod = flagutil.NewDuration("retentionPeriod", "7d", "Log entries with timestamps older than now-retentionPeriod are automatically deleted; "+
+		"log entries with timestamps outside the retention are also rejected during data ingestion; the minimum supported retention is 1d (one day); "+
+		"see https://docs.victoriametrics.com/victorialogs/#retention ; see also -retention.maxDiskSpaceUsageBytes")
+	maxDiskSpaceUsageBytes = flagutil.NewBytes("retention.maxDiskSpaceUsageBytes", 0, "The maximum disk space usage at -storageDataPath before older per-day "+
+		"partitions are automatically dropped; see https://docs.victoriametrics.com/victorialogs/#retention-by-disk-space-usage ; see also -retentionPeriod")
+	futureRetention = flagutil.NewDuration("futureRetention", "2d", "Log entries with timestamps bigger than now+futureRetention are rejected during data ingestion; "+
+		"see https://docs.victoriametrics.com/victorialogs/#retention")
+	storageDataPath = flag.String("storageDataPath", "victoria-logs-data", "Path to directory where to store VictoriaLogs data; "+
+		"see https://docs.victoriametrics.com/victorialogs/#storage")
+	inmemoryDataFlushInterval = flag.Duration("inmemoryDataFlushInterval", 5*time.Second, "The interval for guaranteed saving of in-memory data to disk. "+
+		"The saved data survives unclean shutdowns such as OOM crash, hardware reset, SIGKILL, etc. "+
+		"Bigger intervals may help increase the lifetime of flash storage with limited write cycles (e.g. Raspberry PI). "+
+		"Smaller intervals increase disk IO load. Minimum supported value is 1s")
+	logNewStreams = flag.Bool("logNewStreams", false, "Whether to log creation of new streams; this can be useful for debugging of high cardinality issues with log streams; "+
+		"see https://docs.victoriametrics.com/victorialogs/keyconcepts/#stream-fields ; see also -logIngestedRows")
+	logIngestedRows = flag.Bool("logIngestedRows", false, "Whether to log all the ingested log entries; this can be useful for debugging of data ingestion; "+
+		"see https://docs.victoriametrics.com/victorialogs/data-ingestion/ ; see also -logNewStreams")
+	minFreeDiskSpaceBytes = flagutil.NewBytes("storage.minFreeDiskSpaceBytes", 10e6, "The minimum free disk space at -storageDataPath after which "+
+		"the storage stops accepting new data")
+)
+
+// Init initializes vlstorage.
+//
+// Stop must be called when vlstorage is no longer needed
+func Init() {
+	if strg != nil {
+		logger.Panicf("BUG: Init() has been already called")
+	}
+
+	if retentionPeriod.Duration() < 24*time.Hour {
+		logger.Fatalf("-retentionPeriod cannot be smaller than a day; got %s", retentionPeriod)
+	}
+	cfg := &logstorage.StorageConfig{
+		Retention:              retentionPeriod.Duration(),
+		MaxDiskSpaceUsageBytes: maxDiskSpaceUsageBytes.N,
+		FlushInterval:          *inmemoryDataFlushInterval,
+		FutureRetention:        futureRetention.Duration(),
+		LogNewStreams:          *logNewStreams,
+		LogIngestedRows:        *logIngestedRows,
+		MinFreeDiskSpaceBytes:  minFreeDiskSpaceBytes.N,
+	}
+	logger.Infof("opening storage at -storageDataPath=%s", *storageDataPath)
+	startTime := time.Now()
+	strg = logstorage.MustOpenStorage(*storageDataPath, cfg)
+
+	var ss logstorage.StorageStats
+	strg.UpdateStats(&ss)
+	logger.Infof("successfully opened storage in %.3f seconds; smallParts: %d; bigParts: %d; smallPartBlocks: %d; bigPartBlocks: %d; smallPartRows: %d; bigPartRows: %d; "+
+		"smallPartSize: %d bytes; bigPartSize: %d bytes",
+		time.Since(startTime).Seconds(), ss.SmallParts, ss.BigParts, ss.SmallPartBlocks, ss.BigPartBlocks, ss.SmallPartRowsCount, ss.BigPartRowsCount,
+		ss.CompressedSmallPartSize, ss.CompressedBigPartSize)
+
+	// register storage metrics
+	storageMetrics = metrics.NewSet()
+	storageMetrics.RegisterMetricsWriter(func(w io.Writer) {
+		writeStorageMetrics(w, strg)
+	})
+	metrics.RegisterSet(storageMetrics)
+}
+
+// Stop stops vlstorage.
+func Stop() {
+	metrics.UnregisterSet(storageMetrics, true)
+	storageMetrics = nil
+
+	strg.MustClose()
+	strg = nil
+}
+
+var strg *logstorage.Storage
+var storageMetrics *metrics.Set
+
+// CanWriteData returns non-nil error if it cannot write data to vlstorage.
+func CanWriteData() error {
+	if strg.IsReadOnly() {
+		return &httpserver.ErrorWithStatusCode{
+			Err: fmt.Errorf("cannot add rows into storage in read-only mode; the storage can be in read-only mode "+
+				"because of lack of free disk space at -storageDataPath=%s", *storageDataPath),
+			StatusCode: http.StatusTooManyRequests,
+		}
+	}
+	return nil
+}
+
+// MustAddRows adds lr to vlstorage
+//
+// It is advised to call CanWriteData() before calling MustAddRows()
+func MustAddRows(lr *logstorage.LogRows) {
+	strg.MustAddRows(lr)
+}
+
+// RunQuery runs the given q and calls writeBlock for the returned data blocks
+func RunQuery(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, writeBlock logstorage.WriteBlockFunc) error {
+	return strg.RunQuery(ctx, tenantIDs, q, writeBlock)
+}
+
+// GetFieldNames executes q and returns field names seen in results.
+func GetFieldNames(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query) ([]logstorage.ValueWithHits, error) {
+	return strg.GetFieldNames(ctx, tenantIDs, q)
+}
+
+// GetFieldValues executes q and returns unique values for the fieldName seen in results.
+//
+// If limit > 0, then up to limit unique values are returned.
+func GetFieldValues(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, fieldName string, limit uint64) ([]logstorage.ValueWithHits, error) {
+	return strg.GetFieldValues(ctx, tenantIDs, q, fieldName, limit)
+}
+
+// GetStreamFieldNames executes q and returns stream field names seen in results.
+func GetStreamFieldNames(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query) ([]logstorage.ValueWithHits, error) {
+	return strg.GetStreamFieldNames(ctx, tenantIDs, q)
+}
+
+// GetStreamFieldValues executes q and returns stream field values for the given fieldName seen in results.
+//
+// If limit > 0, then up to limit unique stream field values are returned.
+func GetStreamFieldValues(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, fieldName string, limit uint64) ([]logstorage.ValueWithHits, error) {
+	return strg.GetStreamFieldValues(ctx, tenantIDs, q, fieldName, limit)
+}
+
+// GetStreams executes q and returns streams seen in query results.
+//
+// If limit > 0, then up to limit unique streams are returned.
+func GetStreams(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, limit uint64) ([]logstorage.ValueWithHits, error) {
+	return strg.GetStreams(ctx, tenantIDs, q, limit)
+}
+
+// GetStreamIDs executes q and returns streamIDs seen in query results.
+//
+// If limit > 0, then up to limit unique streamIDs are returned.
+func GetStreamIDs(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, limit uint64) ([]logstorage.ValueWithHits, error) {
+	return strg.GetStreamIDs(ctx, tenantIDs, q, limit)
+}
+
+func writeStorageMetrics(w io.Writer, strg *logstorage.Storage) {
+	var ss logstorage.StorageStats
+	strg.UpdateStats(&ss)
+
+	metrics.WriteGaugeUint64(w, fmt.Sprintf(`vl_free_disk_space_bytes{path=%q}`, *storageDataPath), fs.MustGetFreeSpace(*storageDataPath))
+
+	isReadOnly := uint64(0)
+	if ss.IsReadOnly {
+		isReadOnly = 1
+	}
+	metrics.WriteGaugeUint64(w, fmt.Sprintf(`vl_storage_is_read_only{path=%q}`, *storageDataPath), isReadOnly)
+
+	metrics.WriteGaugeUint64(w, `vl_active_merges{type="storage/inmemory"}`, ss.InmemoryActiveMerges)
+	metrics.WriteGaugeUint64(w, `vl_active_merges{type="storage/small"}`, ss.SmallPartActiveMerges)
+	metrics.WriteGaugeUint64(w, `vl_active_merges{type="storage/big"}`, ss.BigPartActiveMerges)
+
+	metrics.WriteCounterUint64(w, `vl_merges_total{type="storage/inmemory"}`, ss.InmemoryMergesTotal)
+	metrics.WriteCounterUint64(w, `vl_merges_total{type="storage/small"}`, ss.SmallPartMergesTotal)
+	metrics.WriteCounterUint64(w, `vl_merges_total{type="storage/big"}`, ss.BigPartMergesTotal)
+
+	metrics.WriteGaugeUint64(w, `vl_storage_rows{type="storage/inmemory"}`, ss.InmemoryRowsCount)
+	metrics.WriteGaugeUint64(w, `vl_storage_rows{type="storage/small"}`, ss.SmallPartRowsCount)
+	metrics.WriteGaugeUint64(w, `vl_storage_rows{type="storage/big"}`, ss.BigPartRowsCount)
+
+	metrics.WriteGaugeUint64(w, `vl_storage_parts{type="storage/inmemory"}`, ss.InmemoryParts)
+	metrics.WriteGaugeUint64(w, `vl_storage_parts{type="storage/small"}`, ss.SmallParts)
+	metrics.WriteGaugeUint64(w, `vl_storage_parts{type="storage/big"}`, ss.BigParts)
+
+	metrics.WriteGaugeUint64(w, `vl_storage_blocks{type="storage/inmemory"}`, ss.InmemoryBlocks)
+	metrics.WriteGaugeUint64(w, `vl_storage_blocks{type="storage/small"}`, ss.SmallPartBlocks)
+	metrics.WriteGaugeUint64(w, `vl_storage_blocks{type="storage/big"}`, ss.BigPartBlocks)
+
+	metrics.WriteGaugeUint64(w, `vl_partitions`, ss.PartitionsCount)
+	metrics.WriteCounterUint64(w, `vl_streams_created_total`, ss.StreamsCreatedTotal)
+
+	metrics.WriteGaugeUint64(w, `vl_indexdb_rows`, ss.IndexdbItemsCount)
+	metrics.WriteGaugeUint64(w, `vl_indexdb_parts`, ss.IndexdbPartsCount)
+	metrics.WriteGaugeUint64(w, `vl_indexdb_blocks`, ss.IndexdbBlocksCount)
+
+	metrics.WriteGaugeUint64(w, `vl_data_size_bytes{type="indexdb"}`, ss.IndexdbSizeBytes)
+	metrics.WriteGaugeUint64(w, `vl_data_size_bytes{type="storage"}`, ss.CompressedInmemorySize+ss.CompressedSmallPartSize+ss.CompressedBigPartSize)
+
+	metrics.WriteGaugeUint64(w, `vl_compressed_data_size_bytes{type="storage/inmemory"}`, ss.CompressedInmemorySize)
+	metrics.WriteGaugeUint64(w, `vl_compressed_data_size_bytes{type="storage/small"}`, ss.CompressedSmallPartSize)
+	metrics.WriteGaugeUint64(w, `vl_compressed_data_size_bytes{type="storage/big"}`, ss.CompressedBigPartSize)
+
+	metrics.WriteGaugeUint64(w, `vl_uncompressed_data_size_bytes{type="storage/inmemory"}`, ss.UncompressedInmemorySize)
+	metrics.WriteGaugeUint64(w, `vl_uncompressed_data_size_bytes{type="storage/small"}`, ss.UncompressedSmallPartSize)
+	metrics.WriteGaugeUint64(w, `vl_uncompressed_data_size_bytes{type="storage/big"}`, ss.UncompressedBigPartSize)
+
+	metrics.WriteCounterUint64(w, `vl_rows_dropped_total{reason="too_big_timestamp"}`, ss.RowsDroppedTooBigTimestamp)
+	metrics.WriteCounterUint64(w, `vl_rows_dropped_total{reason="too_small_timestamp"}`, ss.RowsDroppedTooSmallTimestamp)
+}

app/vmagent/README.md

@@ -1,3 +1,3 @@
-See vmagent docs [here](https://docs.victoriametrics.com/victoriametrics/vmagent/).
+See vmagent docs [here](https://docs.victoriametrics.com/vmagent/).
 
-vmagent docs can be edited at [docs/vmagent.md](https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/docs/victoriametrics/vmagent.md).
+vmagent docs can be edited at [docs/vmagent.md](https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/docs/vmagent.md).

app/vmagent/common/push_ctx.go

@@ -3,7 +3,7 @@ package common
 import (
 	"sync"
 
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promrelabel"
 )
 
@@ -12,13 +12,13 @@ type PushCtx struct {
 	// WriteRequest contains the WriteRequest, which must be pushed later to remote storage.
 	//
 	// The actual labels and samples for the time series are stored in Labels and Samples fields.
-	WriteRequest prompb.WriteRequest
+	WriteRequest prompbmarshal.WriteRequest
 
 	// Labels contains flat list of all the labels used in WriteRequest.
-	Labels []prompb.Label
+	Labels []prompbmarshal.Label
 
 	// Samples contains flat list of all the samples used in WriteRequest.
-	Samples []prompb.Sample
+	Samples []prompbmarshal.Sample
 }
 
 // Reset resets ctx.

app/vmagent/csvimport/request_handler.go

@@ -6,10 +6,10 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/csvimport"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/csvimport"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/csvimport/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -22,16 +22,16 @@ var (
 
 // InsertHandler processes csv data from req.
 func InsertHandler(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
-	return stream.Parse(req, func(rows []csvimport.Row) error {
+	return stream.Parse(req, func(rows []parser.Row) error {
 		return insertRows(at, rows, extraLabels)
 	})
 }
 
-func insertRows(at *auth.Token, rows []csvimport.Row, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, rows []parser.Row, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
@@ -41,23 +41,23 @@ func insertRows(at *auth.Token, rows []csvimport.Row, extraLabels []prompb.Label
 	for i := range rows {
 		r := &rows[i]
 		labelsLen := len(labels)
-		labels = append(labels, prompb.Label{
+		labels = append(labels, prompbmarshal.Label{
 			Name:  "__name__",
 			Value: r.Metric,
 		})
 		for j := range r.Tags {
 			tag := &r.Tags[j]
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  tag.Key,
 				Value: tag.Value,
 			})
 		}
 		labels = append(labels, extraLabels...)
-		samples = append(samples, prompb.Sample{
+		samples = append(samples, prompbmarshal.Sample{
 			Value:     r.Value,
 			Timestamp: r.Timestamp,
 		})
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[len(samples)-1:],
 		})

app/vmagent/datadogsketches/request_handler.go

@@ -6,11 +6,11 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogsketches"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogsketches/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogutil"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogutils"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -23,7 +23,7 @@ var (
 
 // InsertHandlerForHTTP processes remote write for DataDog POST /api/beta/sketches request.
 func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
@@ -33,7 +33,7 @@ func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
 	})
 }
 
-func insertRows(at *auth.Token, sketches []*datadogsketches.Sketch, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, sketches []*datadogsketches.Sketch, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
@@ -45,22 +45,22 @@ func insertRows(at *auth.Token, sketches []*datadogsketches.Sketch, extraLabels
 		ms := sketch.ToSummary()
 		for _, m := range ms {
 			labelsLen := len(labels)
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  "__name__",
 				Value: m.Name,
 			})
 			for _, label := range m.Labels {
-				labels = append(labels, prompb.Label{
+				labels = append(labels, prompbmarshal.Label{
 					Name:  label.Name,
 					Value: label.Value,
 				})
 			}
 			for _, tag := range sketch.Tags {
-				name, value := datadogutil.SplitTag(tag)
+				name, value := datadogutils.SplitTag(tag)
 				if name == "host" {
 					name = "exported_host"
 				}
-				labels = append(labels, prompb.Label{
+				labels = append(labels, prompbmarshal.Label{
 					Name:  name,
 					Value: value,
 				})
@@ -68,13 +68,13 @@ func insertRows(at *auth.Token, sketches []*datadogsketches.Sketch, extraLabels
 			labels = append(labels, extraLabels...)
 			samplesLen := len(samples)
 			for _, p := range m.Points {
-				samples = append(samples, prompb.Sample{
+				samples = append(samples, prompbmarshal.Sample{
 					Timestamp: p.Timestamp,
 					Value:     p.Value,
 				})
 			}
 			rowsTotal += len(m.Points)
-			tssDst = append(tssDst, prompb.TimeSeries{
+			tssDst = append(tssDst, prompbmarshal.TimeSeries{
 				Labels:  labels[labelsLen:],
 				Samples: samples[samplesLen:],
 			})

app/vmagent/datadogv1/request_handler.go

@@ -6,11 +6,11 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogutils"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogv1"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogv1/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -23,7 +23,7 @@ var (
 
 // InsertHandlerForHTTP processes remote write for DataDog POST /api/v1/series request.
 func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
@@ -33,7 +33,7 @@ func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
 	})
 }
 
-func insertRows(at *auth.Token, series []datadogv1.Series, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, series []datadogv1.Series, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
@@ -45,28 +45,28 @@ func insertRows(at *auth.Token, series []datadogv1.Series, extraLabels []prompb.
 		ss := &series[i]
 		rowsTotal += len(ss.Points)
 		labelsLen := len(labels)
-		labels = append(labels, prompb.Label{
+		labels = append(labels, prompbmarshal.Label{
 			Name:  "__name__",
 			Value: ss.Metric,
 		})
 		if ss.Host != "" {
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  "host",
 				Value: ss.Host,
 			})
 		}
 		if ss.Device != "" {
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  "device",
 				Value: ss.Device,
 			})
 		}
 		for _, tag := range ss.Tags {
-			name, value := datadogutil.SplitTag(tag)
+			name, value := datadogutils.SplitTag(tag)
 			if name == "host" {
 				name = "exported_host"
 			}
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  name,
 				Value: value,
 			})
@@ -74,12 +74,12 @@ func insertRows(at *auth.Token, series []datadogv1.Series, extraLabels []prompb.
 		labels = append(labels, extraLabels...)
 		samplesLen := len(samples)
 		for _, pt := range ss.Points {
-			samples = append(samples, prompb.Sample{
+			samples = append(samples, prompbmarshal.Sample{
 				Timestamp: pt.Timestamp(),
 				Value:     pt.Value(),
 			})
 		}
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[samplesLen:],
 		})

app/vmagent/datadogv2/request_handler.go

@@ -6,11 +6,11 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogutils"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogv2"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogv2/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -25,7 +25,7 @@ var (
 //
 // See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
 func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
@@ -36,7 +36,7 @@ func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
 	})
 }
 
-func insertRows(at *auth.Token, series []datadogv2.Series, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, series []datadogv2.Series, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
@@ -48,28 +48,28 @@ func insertRows(at *auth.Token, series []datadogv2.Series, extraLabels []prompb.
 		ss := &series[i]
 		rowsTotal += len(ss.Points)
 		labelsLen := len(labels)
-		labels = append(labels, prompb.Label{
+		labels = append(labels, prompbmarshal.Label{
 			Name:  "__name__",
 			Value: ss.Metric,
 		})
 		for _, rs := range ss.Resources {
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  rs.Type,
 				Value: rs.Name,
 			})
 		}
 		if ss.SourceTypeName != "" {
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  "source_type_name",
 				Value: ss.SourceTypeName,
 			})
 		}
 		for _, tag := range ss.Tags {
-			name, value := datadogutil.SplitTag(tag)
+			name, value := datadogutils.SplitTag(tag)
 			if name == "host" {
 				name = "exported_host"
 			}
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  name,
 				Value: value,
 			})
@@ -77,12 +77,12 @@ func insertRows(at *auth.Token, series []datadogv2.Series, extraLabels []prompb.
 		labels = append(labels, extraLabels...)
 		samplesLen := len(samples)
 		for _, pt := range ss.Points {
-			samples = append(samples, prompb.Sample{
+			samples = append(samples, prompbmarshal.Sample{
 				Timestamp: pt.Timestamp * 1000,
 				Value:     pt.Value,
 			})
 		}
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[samplesLen:],
 		})

app/vmagent/deployment/Dockerfile

@@ -1,8 +1,8 @@
-ARG base_image=non-existing
+ARG base_image
 FROM $base_image
 
 EXPOSE 8429
 
 ENTRYPOINT ["/vmagent-prod"]
-ARG src_binary=non-existing
+ARG src_binary
 COPY $src_binary ./vmagent-prod

app/vmagent/graphite/request_handler.go

@@ -6,7 +6,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/graphite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/graphite/stream"
 	"github.com/VictoriaMetrics/metrics"
@@ -21,7 +21,7 @@ var (
 //
 // See https://graphite.readthedocs.io/en/latest/feeding-carbon.html#the-plaintext-protocol
 func InsertHandler(r io.Reader) error {
-	return stream.Parse(r, "", func(rows []parser.Row) error {
+	return stream.Parse(r, false, func(rows []parser.Row) error {
 		return insertRows(nil, rows)
 	})
 }
@@ -36,22 +36,22 @@ func insertRows(at *auth.Token, rows []parser.Row) error {
 	for i := range rows {
 		r := &rows[i]
 		labelsLen := len(labels)
-		labels = append(labels, prompb.Label{
+		labels = append(labels, prompbmarshal.Label{
 			Name:  "__name__",
 			Value: r.Metric,
 		})
 		for j := range r.Tags {
 			tag := &r.Tags[j]
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  tag.Key,
 				Value: tag.Value,
 			})
 		}
-		samples = append(samples, prompb.Sample{
+		samples = append(samples, prompbmarshal.Sample{
 			Value:     r.Value,
 			Timestamp: r.Timestamp,
 		})
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[len(samples)-1:],
 		})

app/vmagent/influx/request_handler.go

@@ -10,11 +10,11 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promrelabel"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -35,8 +35,8 @@ var (
 // InsertHandlerForReader processes remote write for influx line protocol.
 //
 // See https://github.com/influxdata/telegraf/tree/master/plugins/inputs/socket_listener/
-func InsertHandlerForReader(at *auth.Token, r io.Reader, encoding string) error {
-	return stream.Parse(r, encoding, true, "", "", func(db string, rows []influx.Row) error {
+func InsertHandlerForReader(at *auth.Token, r io.Reader, isGzipped bool) error {
+	return stream.Parse(r, isGzipped, "", "", func(db string, rows []parser.Row) error {
 		return insertRows(at, db, rows, nil)
 	})
 }
@@ -45,22 +45,21 @@ func InsertHandlerForReader(at *auth.Token, r io.Reader, encoding string) error
 //
 // See https://github.com/influxdata/influxdb/blob/4cbdc197b8117fee648d62e2e5be75c6575352f0/tsdb/README.md
 func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
+	isGzipped := req.Header.Get("Content-Encoding") == "gzip"
 	q := req.URL.Query()
 	precision := q.Get("precision")
 	// Read db tag from https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint
 	db := q.Get("db")
-	encoding := req.Header.Get("Content-Encoding")
-	isStreamMode := req.Header.Get("Stream-Mode") == "1"
-	return stream.Parse(req.Body, encoding, isStreamMode, precision, db, func(db string, rows []influx.Row) error {
+	return stream.Parse(req.Body, isGzipped, precision, db, func(db string, rows []parser.Row) error {
 		return insertRows(at, db, rows, extraLabels)
 	})
 }
 
-func insertRows(at *auth.Token, db string, rows []influx.Row, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, db string, rows []parser.Row, extraLabels []prompbmarshal.Label) error {
 	ctx := getPushCtx()
 	defer putPushCtx(ctx)
 
@@ -80,13 +79,13 @@ func insertRows(at *auth.Token, db string, rows []influx.Row, extraLabels []prom
 			if tag.Key == *dbLabel {
 				hasDBKey = true
 			}
-			commonLabels = append(commonLabels, prompb.Label{
+			commonLabels = append(commonLabels, prompbmarshal.Label{
 				Name:  tag.Key,
 				Value: tag.Value,
 			})
 		}
 		if len(db) > 0 && !hasDBKey {
-			commonLabels = append(commonLabels, prompb.Label{
+			commonLabels = append(commonLabels, prompbmarshal.Label{
 				Name:  *dbLabel,
 				Value: db,
 			})
@@ -110,16 +109,16 @@ func insertRows(at *auth.Token, db string, rows []influx.Row, extraLabels []prom
 			}
 			metricGroup := bytesutil.ToUnsafeString(buf[bufLen:])
 			labelsLen := len(labels)
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  "__name__",
 				Value: metricGroup,
 			})
 			labels = append(labels, commonLabels...)
-			samples = append(samples, prompb.Sample{
+			samples = append(samples, prompbmarshal.Sample{
 				Timestamp: r.Timestamp,
 				Value:     f.Value,
 			})
-			tssDst = append(tssDst, prompb.TimeSeries{
+			tssDst = append(tssDst, prompbmarshal.TimeSeries{
 				Labels:  labels[labelsLen:],
 				Samples: samples[len(samples)-1:],
 			})
@@ -144,7 +143,7 @@ func insertRows(at *auth.Token, db string, rows []influx.Row, extraLabels []prom
 
 type pushCtx struct {
 	ctx            common.PushCtx
-	commonLabels   []prompb.Label
+	commonLabels   []prompbmarshal.Label
 	metricGroupBuf []byte
 	buf            []byte
 }

app/vmagent/main.go

@@ -30,11 +30,10 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/envflag"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/influxutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/influxutils"
 	graphiteserver "github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver/graphite"
 	influxserver "github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver/influx"
 	opentsdbserver "github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver/opentsdb"
@@ -42,11 +41,10 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/procutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentelemetry/firehose"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/pushmetrics"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/stringsutil"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/timeserieslimits"
 )
 
 var (
@@ -79,9 +77,6 @@ var (
 	dryRun        = flag.Bool("dryRun", false, "Whether to check config files without running vmagent. The following files are checked: "+
 		"-promscrape.config, -remoteWrite.relabelConfig, -remoteWrite.urlRelabelConfig, -remoteWrite.streamAggr.config . "+
 		"Unknown config entries aren't allowed in -promscrape.config by default. This can be changed by passing -promscrape.config.strictParse=false command-line flag")
-	maxLabelsPerTimeseries = flag.Int("maxLabelsPerTimeseries", 0, "The maximum number of labels per time series to be accepted. Series with superfluous labels are ignored. In this case the vm_rows_ignored_total{reason=\"too_many_labels\"} metric at /metrics page is incremented")
-	maxLabelNameLen        = flag.Int("maxLabelNameLen", 0, "The maximum length of label names in the accepted time series. Series with longer label name are ignored. In this case the vm_rows_ignored_total{reason=\"too_long_label_name\"} metric at /metrics page is incremented")
-	maxLabelValueLen       = flag.Int("maxLabelValueLen", 0, "The maximum length of label values in the accepted time series. Series with longer label value are ignored. In this case the vm_rows_ignored_total{reason=\"too_long_label_value\"} metric at /metrics page is incremented")
 )
 
 var (
@@ -98,15 +93,6 @@ var (
 )
 
 func main() {
-	// vmagent is optimized for reduced memory allocations,
-	// so it can run with the reduced GOGC in order to reduce the used memory,
-	// while keeping CPU usage spent in GC at low levels.
-	//
-	// Some workloads may need increased GOGC values. Then such values can be set via GOGC environment variable.
-	// It is recommended increasing GOGC if go_memstats_gc_cpu_fraction metric exposed at /metrics page
-	// exceeds 0.05 for extended periods of time.
-	cgroup.SetGOGC(50)
-
 	// Write flags and help message to stdout, since it is easier to grep or pipe.
 	flag.CommandLine.SetOutput(os.Stdout)
 	flag.Usage = usage
@@ -114,7 +100,6 @@ func main() {
 	remotewrite.InitSecretFlags()
 	buildinfo.Init()
 	logger.Init()
-	timeserieslimits.Init(*maxLabelsPerTimeseries, *maxLabelNameLen, *maxLabelValueLen)
 
 	if promscrape.IsDryRun() {
 		if err := promscrape.CheckConfig(); err != nil {
@@ -145,10 +130,10 @@ func main() {
 	startTime := time.Now()
 	remotewrite.StartIngestionRateLimiter()
 	remotewrite.Init()
-	protoparserutil.StartUnmarshalWorkers()
+	common.StartUnmarshalWorkers()
 	if len(*influxListenAddr) > 0 {
 		influxServer = influxserver.MustStart(*influxListenAddr, *influxUseProxyProtocol, func(r io.Reader) error {
-			return influx.InsertHandlerForReader(nil, r, "")
+			return influx.InsertHandlerForReader(nil, r, false)
 		})
 	}
 	if len(*graphiteListenAddr) > 0 {
@@ -165,9 +150,7 @@ func main() {
 
 	promscrape.Init(remotewrite.PushDropSamplesOnFailure)
 
-	go httpserver.Serve(listenAddrs, requestHandler, httpserver.ServeOptions{
-		UseProxyProtocol: useProxyProtocol,
-	})
+	go httpserver.Serve(listenAddrs, useProxyProtocol, requestHandler)
 	logger.Infof("started vmagent in %.3f seconds", time.Since(startTime).Seconds())
 
 	pushmetrics.Init()
@@ -197,7 +180,7 @@ func main() {
 	if len(*opentsdbHTTPListenAddr) > 0 {
 		opentsdbhttpServer.MustStop()
 	}
-	protoparserutil.StopUnmarshalWorkers()
+	common.StopUnmarshalWorkers()
 	remotewrite.Stop()
 
 	logger.Infof("successfully stopped vmagent in %.3f seconds", time.Since(startTime).Seconds())
@@ -206,7 +189,7 @@ func main() {
 func getOpenTSDBHTTPInsertHandler() func(req *http.Request) error {
 	if !remotewrite.MultitenancyEnabled() {
 		return func(req *http.Request) error {
-			path := strings.ReplaceAll(req.URL.Path, "//", "/")
+			path := strings.Replace(req.URL.Path, "//", "/", -1)
 			if path != "/api/put" {
 				return fmt.Errorf("unsupported path requested: %q; expecting '/api/put'", path)
 			}
@@ -214,7 +197,7 @@ func getOpenTSDBHTTPInsertHandler() func(req *http.Request) error {
 		}
 	}
 	return func(req *http.Request) error {
-		path := strings.ReplaceAll(req.URL.Path, "//", "/")
+		path := strings.Replace(req.URL.Path, "//", "/", -1)
 		at, err := getAuthTokenFromPath(path)
 		if err != nil {
 			return fmt.Errorf("cannot obtain auth token from path %q: %w", path, err)
@@ -244,7 +227,7 @@ func requestHandler(w http.ResponseWriter, r *http.Request) bool {
 		}
 		w.Header().Add("Content-Type", "text/html; charset=utf-8")
 		fmt.Fprintf(w, "<h2>vmagent</h2>")
-		fmt.Fprintf(w, "See docs at <a href='https://docs.victoriametrics.com/victoriametrics/vmagent/'>https://docs.victoriametrics.com/victoriametrics/vmagent/</a></br>")
+		fmt.Fprintf(w, "See docs at <a href='https://docs.victoriametrics.com/vmagent/'>https://docs.victoriametrics.com/vmagent/</a></br>")
 		fmt.Fprintf(w, "Useful endpoints:</br>")
 		httpserver.WriteAPIHelp(w, [][2]string{
 			{"targets", "status for discovered active targets"},
@@ -259,7 +242,7 @@ func requestHandler(w http.ResponseWriter, r *http.Request) bool {
 		return true
 	}
 
-	path := strings.ReplaceAll(r.URL.Path, "//", "/")
+	path := strings.Replace(r.URL.Path, "//", "/", -1)
 	if strings.HasPrefix(path, "/prometheus/api/v1/import/prometheus") || strings.HasPrefix(path, "/api/v1/import/prometheus") {
 		prometheusimportRequests.Inc()
 		if err := prometheusimport.InsertHandler(nil, r); err != nil {
@@ -284,7 +267,7 @@ func requestHandler(w http.ResponseWriter, r *http.Request) bool {
 	}
 	switch path {
 	case "/prometheus/api/v1/write", "/api/v1/write", "/api/v1/push", "/prometheus/api/v1/push":
-		if protoparserutil.HandleVMProtoServerHandshake(w, r) {
+		if common.HandleVMProtoServerHandshake(w, r) {
 			return true
 		}
 		prometheusWriteRequests.Inc()
@@ -333,11 +316,7 @@ func requestHandler(w http.ResponseWriter, r *http.Request) bool {
 		return true
 	case "/influx/query", "/query":
 		influxQueryRequests.Inc()
-		influxutil.WriteDatabaseNames(w)
-		return true
-	case "/influx/health":
-		influxHealthRequests.Inc()
-		influxutil.WriteHealthCheckResponse(w)
+		influxutils.WriteDatabaseNames(w)
 		return true
 	case "/opentelemetry/api/v1/push", "/opentelemetry/v1/metrics":
 		opentelemetryPushRequests.Inc()
@@ -445,10 +424,8 @@ func requestHandler(w http.ResponseWriter, r *http.Request) bool {
 	case "/prometheus/api/v1/targets", "/api/v1/targets":
 		promscrapeAPIV1TargetsRequests.Inc()
 		w.Header().Set("Content-Type", "application/json")
-		// https://prometheus.io/docs/prometheus/latest/querying/api/#targets
 		state := r.FormValue("state")
-		scrapePool := r.FormValue("scrapePool")
-		promscrape.WriteAPIV1Targets(w, state, scrapePool)
+		promscrape.WriteAPIV1Targets(w, state)
 		return true
 	case "/prometheus/target_response", "/target_response":
 		promscrapeTargetResponseRequests.Inc()
@@ -517,7 +494,7 @@ func processMultitenantRequest(w http.ResponseWriter, r *http.Request, path stri
 		httpserver.Errorf(w, r, `unsupported multitenant prefix: %q; expected "insert"`, p.Prefix)
 		return true
 	}
-	at, err := auth.NewTokenPossibleMultitenant(p.AuthToken)
+	at, err := auth.NewToken(p.AuthToken)
 	if err != nil {
 		httpserver.Errorf(w, r, "cannot obtain auth token: %s", err)
 		return true
@@ -529,13 +506,7 @@ func processMultitenantRequest(w http.ResponseWriter, r *http.Request, path stri
 			httpserver.Errorf(w, r, "%s", err)
 			return true
 		}
-		statusCode := http.StatusNoContent
-		if strings.HasPrefix(p.Suffix, "prometheus/api/v1/import/prometheus/metrics/job/") {
-			// Return 200 status code for pushgateway requests.
-			// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3636
-			statusCode = http.StatusOK
-		}
-		w.WriteHeader(statusCode)
+		w.WriteHeader(http.StatusNoContent)
 		return true
 	}
 	if strings.HasPrefix(p.Suffix, "datadog/") {
@@ -591,11 +562,7 @@ func processMultitenantRequest(w http.ResponseWriter, r *http.Request, path stri
 		return true
 	case "influx/query":
 		influxQueryRequests.Inc()
-		influxutil.WriteDatabaseNames(w)
-		return true
-	case "influx/health":
-		influxHealthRequests.Inc()
-		influxutil.WriteHealthCheckResponse(w)
+		influxutils.WriteDatabaseNames(w)
 		return true
 	case "opentelemetry/api/v1/push", "opentelemetry/v1/metrics":
 		opentelemetryPushRequests.Inc()
@@ -707,8 +674,7 @@ var (
 	influxWriteRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/influx/write", protocol="influx"}`)
 	influxWriteErrors   = metrics.NewCounter(`vmagent_http_request_errors_total{path="/influx/write", protocol="influx"}`)
 
-	influxQueryRequests  = metrics.NewCounter(`vmagent_http_requests_total{path="/influx/query", protocol="influx"}`)
-	influxHealthRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/influx/health", protocol="influx"}`)
+	influxQueryRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/influx/query", protocol="influx"}`)
 
 	datadogv1WriteRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/datadog/api/v1/series", protocol="datadog"}`)
 	datadogv1WriteErrors   = metrics.NewCounter(`vmagent_http_request_errors_total{path="/datadog/api/v1/series", protocol="datadog"}`)
@@ -754,7 +720,7 @@ func usage() {
 	const s = `
 vmagent collects metrics data via popular data ingestion protocols and routes it to VictoriaMetrics.
 
-See the docs at https://docs.victoriametrics.com/victoriametrics/vmagent/ .
+See the docs at https://docs.victoriametrics.com/vmagent/ .
 `
 	flagutil.Usage(s)
 }

app/vmagent/multiarch/Dockerfile

@@ -1,6 +1,6 @@
 # See https://medium.com/on-docker/use-multi-stage-builds-to-inject-ca-certs-ad1e8f01de1b
-ARG certs_image=non-existing
-ARG root_image=non-existing
+ARG certs_image
+ARG root_image
 FROM $certs_image AS certs
 RUN apk update && apk upgrade && apk --update --no-cache add ca-certificates
 
@@ -9,5 +9,4 @@ COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certifica
 EXPOSE 8429
 ENTRYPOINT ["/vmagent-prod"]
 ARG TARGETARCH
-ARG BINARY_SUFFIX=non-existing
-COPY vmagent-linux-${TARGETARCH}-prod${BINARY_SUFFIX} ./vmagent-prod
+COPY vmagent-linux-${TARGETARCH}-prod ./vmagent-prod

app/vmagent/native/request_handler.go

@@ -8,9 +8,9 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/native/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -25,17 +25,17 @@ var (
 //
 // See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6
 func InsertHandler(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
-	encoding := req.Header.Get("Content-Encoding")
-	return stream.Parse(req.Body, encoding, func(block *stream.Block) error {
+	isGzip := req.Header.Get("Content-Encoding") == "gzip"
+	return stream.Parse(req.Body, isGzip, func(block *stream.Block) error {
 		return insertRows(at, block, extraLabels)
 	})
 }
 
-func insertRows(at *auth.Token, block *stream.Block, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, block *stream.Block, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
@@ -53,13 +53,13 @@ func insertRows(at *auth.Token, block *stream.Block, extraLabels []prompb.Label)
 	samples := ctx.Samples[:0]
 	mn := &block.MetricName
 	labelsLen := len(labels)
-	labels = append(labels, prompb.Label{
+	labels = append(labels, prompbmarshal.Label{
 		Name:  "__name__",
 		Value: bytesutil.ToUnsafeString(mn.MetricGroup),
 	})
 	for j := range mn.Tags {
 		tag := &mn.Tags[j]
-		labels = append(labels, prompb.Label{
+		labels = append(labels, prompbmarshal.Label{
 			Name:  bytesutil.ToUnsafeString(tag.Key),
 			Value: bytesutil.ToUnsafeString(tag.Value),
 		})
@@ -72,12 +72,12 @@ func insertRows(at *auth.Token, block *stream.Block, extraLabels []prompb.Label)
 	}
 	samplesLen := len(samples)
 	for j, value := range values {
-		samples = append(samples, prompb.Sample{
+		samples = append(samples, prompbmarshal.Sample{
 			Value:     value,
 			Timestamp: timestamps[j],
 		})
 	}
-	tssDst = append(tssDst, prompb.TimeSeries{
+	tssDst = append(tssDst, prompbmarshal.TimeSeries{
 		Labels:  labels[labelsLen:],
 		Samples: samples[samplesLen:],
 	})

app/vmagent/newrelic/request_handler.go

@@ -9,10 +9,10 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/newrelic"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/newrelic/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 )
 
@@ -24,17 +24,18 @@ var (
 
 // InsertHandlerForHTTP processes remote write for NewRelic POST /infra/v2/metrics/events/bulk request.
 func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
-	encoding := req.Header.Get("Content-Encoding")
-	return stream.Parse(req.Body, encoding, func(rows []newrelic.Row) error {
+	ce := req.Header.Get("Content-Encoding")
+	isGzip := ce == "gzip"
+	return stream.Parse(req.Body, isGzip, func(rows []newrelic.Row) error {
 		return insertRows(at, rows, extraLabels)
 	})
 }
 
-func insertRows(at *auth.Token, rows []newrelic.Row, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, rows []newrelic.Row, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
@@ -49,22 +50,22 @@ func insertRows(at *auth.Token, rows []newrelic.Row, extraLabels []prompb.Label)
 		for j := range srcSamples {
 			s := &srcSamples[j]
 			labelsLen := len(labels)
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  "__name__",
 				Value: bytesutil.ToUnsafeString(s.Name),
 			})
 			for k := range tags {
 				t := &tags[k]
-				labels = append(labels, prompb.Label{
+				labels = append(labels, prompbmarshal.Label{
 					Name:  bytesutil.ToUnsafeString(t.Key),
 					Value: bytesutil.ToUnsafeString(t.Value),
 				})
 			}
-			samples = append(samples, prompb.Sample{
+			samples = append(samples, prompbmarshal.Sample{
 				Value:     s.Value,
 				Timestamp: r.Timestamp,
 			})
-			tssDst = append(tssDst, prompb.TimeSeries{
+			tssDst = append(tssDst, prompbmarshal.TimeSeries{
 				Labels:  labels[labelsLen:],
 				Samples: samples[len(samples)-1:],
 			})

app/vmagent/opentelemetry/request_handler.go

@@ -7,30 +7,27 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentelemetry/firehose"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentelemetry/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
 
 var (
-	rowsInserted           = metrics.NewCounter(`vmagent_rows_inserted_total{type="opentelemetry"}`)
-	metadataInserted       = metrics.NewCounter(`vmagent_metadata_inserted_total{type="opentelemetry"}`)
-	rowsTenantInserted     = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_rows_total{type="opentelemetry"}`)
-	metadataTenantInserted = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_metadata_total{type="opentelemetry"}`)
-	rowsPerInsert          = metrics.NewHistogram(`vmagent_rows_per_insert{type="opentelemetry"}`)
+	rowsInserted       = metrics.NewCounter(`vmagent_rows_inserted_total{type="opentelemetry"}`)
+	rowsTenantInserted = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_rows_total{type="opentelemetry"}`)
+	rowsPerInsert      = metrics.NewHistogram(`vmagent_rows_per_insert{type="opentelemetry"}`)
 )
 
 // InsertHandler processes opentelemetry metrics.
 func InsertHandler(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
-	encoding := req.Header.Get("Content-Encoding")
+	isGzipped := req.Header.Get("Content-Encoding") == "gzip"
 	var processBody func([]byte) ([]byte, error)
 	if req.Header.Get("Content-Type") == "application/json" {
 		if req.Header.Get("X-Amz-Firehose-Protocol-Version") != "" {
@@ -39,12 +36,12 @@ func InsertHandler(at *auth.Token, req *http.Request) error {
 			return fmt.Errorf("json encoding isn't supported for opentelemetry format. Use protobuf encoding")
 		}
 	}
-	return stream.ParseStream(req.Body, encoding, processBody, func(tss []prompb.TimeSeries, mms []prompb.MetricMetadata) error {
-		return insertRows(at, tss, mms, extraLabels)
+	return stream.ParseStream(req.Body, isGzipped, processBody, func(tss []prompbmarshal.TimeSeries) error {
+		return insertRows(at, tss, extraLabels)
 	})
 }
 
-func insertRows(at *auth.Token, tss []prompb.TimeSeries, mms []prompb.MetricMetadata, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, tss []prompbmarshal.TimeSeries, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
@@ -60,39 +57,20 @@ func insertRows(at *auth.Token, tss []prompb.TimeSeries, mms []prompb.MetricMeta
 		labels = append(labels, extraLabels...)
 		samplesLen := len(samples)
 		samples = append(samples, ts.Samples...)
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[samplesLen:],
 		})
 	}
 	ctx.WriteRequest.Timeseries = tssDst
-
-	var metadataTotal int
-	if promscrape.IsMetadataEnabled() {
-		var accountID, projectID uint32
-		if at != nil {
-			accountID = at.AccountID
-			projectID = at.ProjectID
-			for i := range mms {
-				mm := &mms[i]
-				mm.AccountID = accountID
-				mm.ProjectID = projectID
-			}
-		}
-		ctx.WriteRequest.Metadata = mms
-		metadataTotal = len(mms)
-	}
-
 	ctx.Labels = labels
 	ctx.Samples = samples
 	if !remotewrite.TryPush(at, &ctx.WriteRequest) {
 		return remotewrite.ErrQueueFullHTTPRetry
 	}
 	rowsInserted.Add(rowsTotal)
-	metadataInserted.Add(metadataTotal)
 	if at != nil {
 		rowsTenantInserted.Get(at).Add(rowsTotal)
-		metadataTenantInserted.Get(at).Add(metadataTotal)
 	}
 	rowsPerInsert.Update(float64(rowsTotal))
 	return nil

app/vmagent/opentsdb/request_handler.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentsdb"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentsdb/stream"
 	"github.com/VictoriaMetrics/metrics"
@@ -33,22 +33,22 @@ func insertRows(rows []parser.Row) error {
 	for i := range rows {
 		r := &rows[i]
 		labelsLen := len(labels)
-		labels = append(labels, prompb.Label{
+		labels = append(labels, prompbmarshal.Label{
 			Name:  "__name__",
 			Value: r.Metric,
 		})
 		for j := range r.Tags {
 			tag := &r.Tags[j]
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  tag.Key,
 				Value: tag.Value,
 			})
 		}
-		samples = append(samples, prompb.Sample{
+		samples = append(samples, prompbmarshal.Sample{
 			Value:     r.Value,
 			Timestamp: r.Timestamp,
 		})
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[len(samples)-1:],
 		})

app/vmagent/opentsdbhttp/request_handler.go

@@ -6,10 +6,10 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentsdbhttp"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentsdbhttp"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentsdbhttp/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/metrics"
 )
 
@@ -21,16 +21,16 @@ var (
 // InsertHandler processes HTTP OpenTSDB put requests.
 // See http://opentsdb.net/docs/build/html/api_http/put.html
 func InsertHandler(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
-	return stream.Parse(req, func(rows []opentsdbhttp.Row) error {
+	return stream.Parse(req, func(rows []parser.Row) error {
 		return insertRows(at, rows, extraLabels)
 	})
 }
 
-func insertRows(at *auth.Token, rows []opentsdbhttp.Row, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, rows []parser.Row, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
@@ -40,23 +40,23 @@ func insertRows(at *auth.Token, rows []opentsdbhttp.Row, extraLabels []prompb.La
 	for i := range rows {
 		r := &rows[i]
 		labelsLen := len(labels)
-		labels = append(labels, prompb.Label{
+		labels = append(labels, prompbmarshal.Label{
 			Name:  "__name__",
 			Value: r.Metric,
 		})
 		for j := range r.Tags {
 			tag := &r.Tags[j]
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  tag.Key,
 				Value: tag.Value,
 			})
 		}
 		labels = append(labels, extraLabels...)
-		samples = append(samples, prompb.Sample{
+		samples = append(samples, prompbmarshal.Sample{
 			Value:     r.Value,
 			Timestamp: r.Timestamp,
 		})
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[len(samples)-1:],
 		})

app/vmagent/prometheusimport/request_handler.go

@@ -7,103 +7,78 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/prometheus"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
+	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/prometheus"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/prometheus/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
 
 var (
-	rowsInserted           = metrics.NewCounter(`vmagent_rows_inserted_total{type="prometheus"}`)
-	metadataInserted       = metrics.NewCounter(`vmagent_metadata_inserted_total{type="prometheus"}`)
-	rowsTenantInserted     = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_rows_total{type="prometheus"}`)
-	metadataTenantInserted = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_metadata_total{type="prometheus"}`)
-
-	rowsPerInsert = metrics.NewHistogram(`vmagent_rows_per_insert{type="prometheus"}`)
+	rowsInserted       = metrics.NewCounter(`vmagent_rows_inserted_total{type="prometheus"}`)
+	rowsTenantInserted = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_rows_total{type="prometheus"}`)
+	rowsPerInsert      = metrics.NewHistogram(`vmagent_rows_per_insert{type="prometheus"}`)
 )
 
 // InsertHandler processes `/api/v1/import/prometheus` request.
 func InsertHandler(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
-	defaultTimestamp, err := protoparserutil.GetTimestamp(req)
+	defaultTimestamp, err := parserCommon.GetTimestamp(req)
 	if err != nil {
 		return err
 	}
-	encoding := req.Header.Get("Content-Encoding")
-	return stream.Parse(req.Body, defaultTimestamp, encoding, true, promscrape.IsMetadataEnabled(), func(rows []prometheus.Row, mms []prometheus.Metadata) error {
-		return insertRows(at, rows, mms, extraLabels)
+	isGzipped := req.Header.Get("Content-Encoding") == "gzip"
+	return stream.Parse(req.Body, defaultTimestamp, isGzipped, true, func(rows []parser.Row) error {
+		return insertRows(at, rows, extraLabels)
 	}, func(s string) {
 		httpserver.LogError(req, s)
 	})
 }
 
-func insertRows(at *auth.Token, rows []prometheus.Row, mms []prometheus.Metadata, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, rows []parser.Row, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
 	tssDst := ctx.WriteRequest.Timeseries[:0]
-	mmsDst := ctx.WriteRequest.Metadata[:0]
 	labels := ctx.Labels[:0]
 	samples := ctx.Samples[:0]
 	for i := range rows {
 		r := &rows[i]
 		labelsLen := len(labels)
-		labels = append(labels, prompb.Label{
+		labels = append(labels, prompbmarshal.Label{
 			Name:  "__name__",
 			Value: r.Metric,
 		})
 		for j := range r.Tags {
 			tag := &r.Tags[j]
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  tag.Key,
 				Value: tag.Value,
 			})
 		}
 		labels = append(labels, extraLabels...)
-		samples = append(samples, prompb.Sample{
+		samples = append(samples, prompbmarshal.Sample{
 			Value:     r.Value,
 			Timestamp: r.Timestamp,
 		})
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[len(samples)-1:],
 		})
 	}
-	var accountID, projectID uint32
-	if at != nil {
-		accountID = at.AccountID
-		projectID = at.ProjectID
-	}
-	for i := range mms {
-		mm := &mms[i]
-		mmsDst = append(mmsDst, prompb.MetricMetadata{
-			MetricFamilyName: mm.Metric,
-			Help:             mm.Help,
-			Type:             mm.Type,
-			// there is no unit in Prometheus exposition formats
-
-			AccountID: accountID,
-			ProjectID: projectID,
-		})
-	}
 	ctx.WriteRequest.Timeseries = tssDst
-	ctx.WriteRequest.Metadata = mmsDst
 	ctx.Labels = labels
 	ctx.Samples = samples
 	if !remotewrite.TryPush(at, &ctx.WriteRequest) {
 		return remotewrite.ErrQueueFullHTTPRetry
 	}
 	rowsInserted.Add(len(rows))
-	metadataInserted.Add(len(mms))
 	if at != nil {
 		rowsTenantInserted.Get(at).Add(len(rows))
-		metadataTenantInserted.Get(at).Add(len(mms))
 	}
 	rowsPerInsert.Update(float64(len(rows)))
 	return nil

app/vmagent/prometheusimport/request_handler_test.go

@@ -12,7 +12,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/fs"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 )
 
 var (
@@ -26,7 +26,7 @@ func TestInsertHandler(t *testing.T) {
 	req := httptest.NewRequest(http.MethodPost, "/insert/0/api/v1/import/prometheus", bytes.NewBufferString(`{"foo":"bar"}
 go_memstats_alloc_bytes_total 1`))
 	if err := InsertHandler(nil, req); err != nil {
-		t.Fatalf("unexpected error %s", err)
+		t.Fatalf("unxepected error %s", err)
 	}
 	expectedMsg := "cannot unmarshal Prometheus line"
 	if !strings.Contains(testOutput.String(), expectedMsg) {
@@ -44,17 +44,17 @@ func setUp() {
 		log.Fatalf("unable to set %q with value %q, err: %v", remoteWriteFlag, srv.URL, err)
 	}
 	logger.Init()
-	protoparserutil.StartUnmarshalWorkers()
+	common.StartUnmarshalWorkers()
 	remotewrite.Init()
 	testOutput = &bytes.Buffer{}
 	logger.SetOutputForTests(testOutput)
 }
 
 func tearDown() {
-	protoparserutil.StopUnmarshalWorkers()
+	common.StopUnmarshalWorkers()
 	srv.Close()
 	logger.ResetOutputForTest()
 	tmpDataDir := flag.Lookup("remoteWrite.tmpDataPath").Value.String()
-	fs.MustRemoveDir(tmpDataDir)
+	fs.MustRemoveAll(tmpDataDir)
 
 }

app/vmagent/promremotewrite/request_handler.go

@@ -7,40 +7,37 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
+	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/promremotewrite/stream"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/protoparserutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
 	"github.com/VictoriaMetrics/metrics"
 )
 
 var (
-	rowsInserted           = metrics.NewCounter(`vmagent_rows_inserted_total{type="promremotewrite"}`)
-	metadataInserted       = metrics.NewCounter(`vmagent_metadata_inserted_total{type="promremotewrite"}`)
-	rowsTenantInserted     = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_rows_total{type="promremotewrite"}`)
-	metadataTenantInserted = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_metadata_total{type="promremotewrite"}`)
-	rowsPerInsert          = metrics.NewHistogram(`vmagent_rows_per_insert{type="promremotewrite"}`)
+	rowsInserted       = metrics.NewCounter(`vmagent_rows_inserted_total{type="promremotewrite"}`)
+	rowsTenantInserted = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_rows_total{type="promremotewrite"}`)
+	rowsPerInsert      = metrics.NewHistogram(`vmagent_rows_per_insert{type="promremotewrite"}`)
 )
 
 // InsertHandler processes remote write for prometheus.
 func InsertHandler(at *auth.Token, req *http.Request) error {
-	extraLabels, err := protoparserutil.GetExtraLabels(req)
+	extraLabels, err := parserCommon.GetExtraLabels(req)
 	if err != nil {
 		return err
 	}
 	isVMRemoteWrite := req.Header.Get("Content-Encoding") == "zstd"
-	return stream.Parse(req.Body, isVMRemoteWrite, func(tss []prompb.TimeSeries, mms []prompb.MetricMetadata) error {
-		return insertRows(at, tss, mms, extraLabels)
+	return stream.Parse(req.Body, isVMRemoteWrite, func(tss []prompb.TimeSeries) error {
+		return insertRows(at, tss, extraLabels)
 	})
 }
 
-func insertRows(at *auth.Token, timeseries []prompb.TimeSeries, mms []prompb.MetricMetadata, extraLabels []prompb.Label) error {
+func insertRows(at *auth.Token, timeseries []prompb.TimeSeries, extraLabels []prompbmarshal.Label) error {
 	ctx := common.GetPushCtx()
 	defer common.PutPushCtx(ctx)
 
 	rowsTotal := 0
 	tssDst := ctx.WriteRequest.Timeseries[:0]
-	mmsDst := ctx.WriteRequest.Metadata[:0]
 	labels := ctx.Labels[:0]
 	samples := ctx.Samples[:0]
 	for i := range timeseries {
@@ -49,7 +46,7 @@ func insertRows(at *auth.Token, timeseries []prompb.TimeSeries, mms []prompb.Met
 		labelsLen := len(labels)
 		for i := range ts.Labels {
 			label := &ts.Labels[i]
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  label.Name,
 				Value: label.Value,
 			})
@@ -58,41 +55,17 @@ func insertRows(at *auth.Token, timeseries []prompb.TimeSeries, mms []prompb.Met
 		samplesLen := len(samples)
 		for i := range ts.Samples {
 			sample := &ts.Samples[i]
-			samples = append(samples, prompb.Sample{
+			samples = append(samples, prompbmarshal.Sample{
 				Value:     sample.Value,
 				Timestamp: sample.Timestamp,
 			})
 		}
-		tssDst = append(tssDst, prompb.TimeSeries{
+		tssDst = append(tssDst, prompbmarshal.TimeSeries{
 			Labels:  labels[labelsLen:],
 			Samples: samples[samplesLen:],
 		})
 	}
 	ctx.WriteRequest.Timeseries = tssDst
-
-	var metadataTotal int
-	if promscrape.IsMetadataEnabled() {
-		var accountID, projectID uint32
-		if at != nil {
-			accountID = at.AccountID
-			projectID = at.ProjectID
-		}
-		for i := range mms {
-			mm := &mms[i]
-			mmsDst = append(mmsDst, prompb.MetricMetadata{
-				MetricFamilyName: mm.MetricFamilyName,
-				Help:             mm.Help,
-				Type:             mm.Type,
-				Unit:             mm.Unit,
-
-				AccountID: accountID,
-				ProjectID: projectID,
-			})
-		}
-		ctx.WriteRequest.Metadata = mmsDst
-		metadataTotal = len(mms)
-	}
-
 	ctx.Labels = labels
 	ctx.Samples = samples
 	if !remotewrite.TryPush(at, &ctx.WriteRequest) {
@@ -101,9 +74,7 @@ func insertRows(at *auth.Token, timeseries []prompb.TimeSeries, mms []prompb.Met
 	rowsInserted.Add(rowsTotal)
 	if at != nil {
 		rowsTenantInserted.Get(at).Add(rowsTotal)
-		metadataTenantInserted.Get(at).Add(metadataTotal)
 	}
-	metadataInserted.Add(metadataTotal)
 	rowsPerInsert.Update(float64(rowsTotal))
 	return nil
 }

app/vmagent/remotewrite/client.go

@@ -7,42 +7,35 @@ import (
 	"io"
 	"net/http"
 	"net/url"
-	"strconv"
 	"strings"
 	"sync"
-	"sync/atomic"
 	"time"
 
+	"github.com/VictoriaMetrics/metrics"
+
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/awsapi"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding/zstd"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httputil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/persistentqueue"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/ratelimiter"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/timerpool"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/timeutil"
-	"github.com/VictoriaMetrics/metrics"
-	"github.com/golang/snappy"
 )
 
 var (
 	forcePromProto = flagutil.NewArrayBool("remoteWrite.forcePromProto", "Whether to force Prometheus remote write protocol for sending data "+
-		"to the corresponding -remoteWrite.url . See https://docs.victoriametrics.com/victoriametrics/vmagent/#victoriametrics-remote-write-protocol")
+		"to the corresponding -remoteWrite.url . See https://docs.victoriametrics.com/vmagent/#victoriametrics-remote-write-protocol")
 	forceVMProto = flagutil.NewArrayBool("remoteWrite.forceVMProto", "Whether to force VictoriaMetrics remote write protocol for sending data "+
-		"to the corresponding -remoteWrite.url . See https://docs.victoriametrics.com/victoriametrics/vmagent/#victoriametrics-remote-write-protocol")
+		"to the corresponding -remoteWrite.url . See https://docs.victoriametrics.com/vmagent/#victoriametrics-remote-write-protocol")
 
 	rateLimit = flagutil.NewArrayInt("remoteWrite.rateLimit", 0, "Optional rate limit in bytes per second for data sent to the corresponding -remoteWrite.url. "+
 		"By default, the rate limit is disabled. It can be useful for limiting load on remote storage when big amounts of buffered data "+
 		"is sent after temporary unavailability of the remote storage. See also -maxIngestionRate")
-	sendTimeout      = flagutil.NewArrayDuration("remoteWrite.sendTimeout", time.Minute, "Timeout for sending a single block of data to the corresponding -remoteWrite.url")
-	retryMinInterval = flagutil.NewArrayDuration("remoteWrite.retryMinInterval", time.Second, "The minimum delay between retry attempts to send a block of data to the corresponding -remoteWrite.url. Every next retry attempt will double the delay to prevent hammering of remote database. See also -remoteWrite.retryMaxInterval")
-	// deprecated in the future. use -remoteWrite.retryMaxInterval instead
-	retryMaxTime     = flagutil.NewArrayDuration("remoteWrite.retryMaxTime", time.Minute, "The max time spent on retry attempts to send a block of data to the corresponding -remoteWrite.url. This flag is deprecated, use -remoteWrite.retryMaxInterval instead")
-	retryMaxInterval = flagutil.NewArrayDuration("remoteWrite.retryMaxInterval", time.Minute, "The maximum delay between retry attempts to send a block of data to the corresponding -remoteWrite.url.  The delay doubles with each retry until this maximum is reached, after which it remains constant. See also -remoteWrite.retryMinInterval")
-	proxyURL         = flagutil.NewArrayString("remoteWrite.proxyURL", "Optional proxy URL for writing data to the corresponding -remoteWrite.url. "+
+	sendTimeout = flagutil.NewArrayDuration("remoteWrite.sendTimeout", time.Minute, "Timeout for sending a single block of data to the corresponding -remoteWrite.url")
+	proxyURL    = flagutil.NewArrayString("remoteWrite.proxyURL", "Optional proxy URL for writing data to the corresponding -remoteWrite.url. "+
 		"Supported proxies: http, https, socks5. Example: -remoteWrite.proxyURL=socks5://proxy:1234")
 
 	tlsHandshakeTimeout   = flagutil.NewArrayDuration("remoteWrite.tlsHandshakeTimeout", 20*time.Second, "The timeout for establishing tls connections to the corresponding -remoteWrite.url")
@@ -92,15 +85,11 @@ type client struct {
 	remoteWriteURL string
 
 	// Whether to use VictoriaMetrics remote write protocol for sending the data to remoteWriteURL
-	useVMProto          atomic.Bool
-	canDowngradeVMProto atomic.Bool
+	useVMProto bool
 
 	fq *persistentqueue.FastQueue
 	hc *http.Client
 
-	retryMinInterval time.Duration
-	retryMaxInterval time.Duration
-
 	sendBlock func(block []byte) bool
 	authCfg   *promauth.Config
 	awsCfg    *awsapi.Config
@@ -130,14 +119,14 @@ func newHTTPClient(argIdx int, remoteWriteURL, sanitizedURL string, fq *persiste
 	if err != nil {
 		logger.Fatalf("cannot initialize AWS Config for -remoteWrite.url=%q: %s", remoteWriteURL, err)
 	}
-
-	tr := httputil.NewTransport(false, "vmagent_remotewrite")
-	tr.TLSHandshakeTimeout = tlsHandshakeTimeout.GetOptionalArg(argIdx)
-	tr.MaxConnsPerHost = 2 * concurrency
-	tr.MaxIdleConnsPerHost = 2 * concurrency
-	tr.IdleConnTimeout = time.Minute
-	tr.WriteBufferSize = 64 * 1024
-
+	tr := &http.Transport{
+		DialContext:         netutil.NewStatDialFunc("vmagent_remotewrite"),
+		TLSHandshakeTimeout: tlsHandshakeTimeout.GetOptionalArg(argIdx),
+		MaxConnsPerHost:     2 * concurrency,
+		MaxIdleConnsPerHost: 2 * concurrency,
+		IdleConnTimeout:     time.Minute,
+		WriteBufferSize:     64 * 1024,
+	}
 	pURL := proxyURL.GetOptionalArg(argIdx)
 	if len(pURL) > 0 {
 		if !strings.Contains(pURL, "://") {
@@ -153,20 +142,14 @@ func newHTTPClient(argIdx int, remoteWriteURL, sanitizedURL string, fq *persiste
 		Transport: authCfg.NewRoundTripper(tr),
 		Timeout:   sendTimeout.GetOptionalArg(argIdx),
 	}
-	retryMaxIntervalFlag := retryMaxTime
-	if retryMaxInterval.String() != "" {
-		retryMaxIntervalFlag = retryMaxInterval
-	}
 	c := &client{
-		sanitizedURL:     sanitizedURL,
-		remoteWriteURL:   remoteWriteURL,
-		authCfg:          authCfg,
-		awsCfg:           awsCfg,
-		fq:               fq,
-		hc:               hc,
-		retryMinInterval: retryMinInterval.GetOptionalArg(argIdx),
-		retryMaxInterval: retryMaxIntervalFlag.GetOptionalArg(argIdx),
-		stopCh:           make(chan struct{}),
+		sanitizedURL:   sanitizedURL,
+		remoteWriteURL: remoteWriteURL,
+		authCfg:        authCfg,
+		awsCfg:         awsCfg,
+		fq:             fq,
+		hc:             hc,
+		stopCh:         make(chan struct{}),
 	}
 	c.sendBlock = c.sendBlockHTTP
 
@@ -176,11 +159,17 @@ func newHTTPClient(argIdx int, remoteWriteURL, sanitizedURL string, fq *persiste
 		logger.Fatalf("-remoteWrite.useVMProto and -remoteWrite.usePromProto cannot be set simultaneously for -remoteWrite.url=%s", sanitizedURL)
 	}
 	if !useVMProto && !usePromProto {
-		// The VM protocol could be downgraded later at runtime if unsupported media type response status is received.
-		useVMProto = true
-		c.canDowngradeVMProto.Store(true)
+		// Auto-detect whether the remote storage supports VictoriaMetrics remote write protocol.
+		doRequest := func(url string) (*http.Response, error) {
+			return c.doRequest(url, nil)
+		}
+		useVMProto = common.HandleVMProtoClientHandshake(c.remoteWriteURL, doRequest)
+		if !useVMProto {
+			logger.Infof("the remote storage at %q doesn't support VictoriaMetrics remote write protocol. Switching to Prometheus remote write protocol. "+
+				"See https://docs.victoriametrics.com/vmagent/#victoriametrics-remote-write-protocol", sanitizedURL)
+		}
 	}
-	c.useVMProto.Store(useVMProto)
+	c.useVMProto = useVMProto
 
 	return c
 }
@@ -388,7 +377,7 @@ func (c *client) newRequest(url string, body []byte) (*http.Request, error) {
 	h := req.Header
 	h.Set("User-Agent", "vmagent")
 	h.Set("Content-Type", "application/x-protobuf")
-	if encoding.IsZstd(body) {
+	if c.useVMProto {
 		h.Set("Content-Encoding", "zstd")
 		h.Set("X-VictoriaMetrics-Remote-Write-Version", "1")
 	} else {
@@ -407,11 +396,11 @@ func (c *client) newRequest(url string, body []byte) (*http.Request, error) {
 // sendBlockHTTP sends the given block to c.remoteWriteURL.
 //
 // The function returns false only if c.stopCh is closed.
-// Otherwise, it tries sending the block to remote storage indefinitely.
+// Otherwise it tries sending the block to remote storage indefinitely.
 func (c *client) sendBlockHTTP(block []byte) bool {
 	c.rl.Register(len(block))
-	maxRetryDuration := timeutil.AddJitterToDuration(c.retryMaxInterval)
-	retryDuration := timeutil.AddJitterToDuration(c.retryMinInterval)
+	maxRetryDuration := timeutil.AddJitterToDuration(time.Minute)
+	retryDuration := timeutil.AddJitterToDuration(time.Second)
 	retriesCount := 0
 
 again:
@@ -424,7 +413,7 @@ again:
 		if retryDuration > maxRetryDuration {
 			retryDuration = maxRetryDuration
 		}
-		remoteWriteRetryLogger.Warnf("couldn't send a block with size %d bytes to %q: %s; re-sending the block in %.3f seconds",
+		logger.Warnf("couldn't send a block with size %d bytes to %q: %s; re-sending the block in %.3f seconds",
 			len(block), c.sanitizedURL, err, retryDuration.Seconds())
 		t := timerpool.Get(retryDuration)
 		select {
@@ -437,7 +426,6 @@ again:
 		c.retriesCount.Inc()
 		goto again
 	}
-
 	statusCode := resp.StatusCode
 	if statusCode/100 == 2 {
 		_ = resp.Body.Close()
@@ -446,50 +434,21 @@ again:
 		c.blocksSent.Inc()
 		return true
 	}
-
 	metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_requests_total{url=%q, status_code="%d"}`, c.sanitizedURL, statusCode)).Inc()
-	switch statusCode {
-	case 409:
-		logBlockRejected(block, c.sanitizedURL, resp)
-
-		// Just drop block on 409 status code like Prometheus does.
-		// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/873
-		// and https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1149
+	if statusCode == 409 || statusCode == 400 {
+		body, err := io.ReadAll(resp.Body)
 		_ = resp.Body.Close()
-		c.packetsDropped.Inc()
-		return true
-		// - Remote Write v1 specification implicitly expects a `400 Bad Request` when the encoding is not supported.
-		// - Remote Write v2 specification explicitly specifies a `415 Unsupported Media Type` for unsupported encodings.
-		// - Real-world implementations of v1 use both 400 and 415 status codes.
-		// See more in research: https://github.com/VictoriaMetrics/VictoriaMetrics/pull/8462#issuecomment-2786918054
-	case 415, 400:
-		if encoding.IsZstd(block) {
-			logger.Infof("received unsupported media type or bad request from remote storage at %q. Re-packing the block to Prometheus remote write and retrying."+
-				"See https://docs.victoriametrics.com/victoriametrics/vmagent/#victoriametrics-remote-write-protocol", c.sanitizedURL)
-
-			zstdBlockLen := len(block)
-			block, err = repackBlockFromZstdToSnappy(block)
-			if err == nil {
-				if c.canDowngradeVMProto.Swap(false) {
-					logger.Infof("received unsupported media type or bad request from remote storage at %q. Downgrading protocol from VictoriaMetrics to Prometheus remote write for all future requests. "+
-						"See https://docs.victoriametrics.com/victoriametrics/vmagent/#victoriametrics-remote-write-protocol", c.sanitizedURL)
-					c.useVMProto.Store(false)
-				}
-
-				c.retriesCount.Inc()
-				_ = resp.Body.Close()
-				goto again
-			}
-
-			logger.Warnf("failed to repack zstd block (%s bytes) to snappy: %s; The block will be rejected. "+
-				"Possible cause: ungraceful shutdown leading to persisted queue corruption.",
-				zstdBlockLen, err)
+		if err != nil {
+			remoteWriteRejectedLogger.Errorf("sending a block with size %d bytes to %q was rejected (skipping the block): status code %d; "+
+				"failed to read response body: %s",
+				len(block), c.sanitizedURL, statusCode, err)
+		} else {
+			remoteWriteRejectedLogger.Errorf("sending a block with size %d bytes to %q was rejected (skipping the block): status code %d; response body: %s",
+				len(block), c.sanitizedURL, statusCode, string(body))
 		}
-
-		// Just drop snappy blocks on 400 or 415 status codes like Prometheus does.
+		// Just drop block on 409 and 400 status codes like Prometheus does.
 		// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/873
 		// and https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1149
-		logBlockRejected(block, c.sanitizedURL, resp)
 		_ = resp.Body.Close()
 		c.packetsDropped.Inc()
 		return true
@@ -497,10 +456,10 @@ again:
 
 	// Unexpected status code returned
 	retriesCount++
-	retryAfterHeader := parseRetryAfterHeader(resp.Header.Get("Retry-After"))
-	retryDuration = getRetryDuration(retryAfterHeader, retryDuration, maxRetryDuration)
-
-	// Handle response
+	retryDuration *= 2
+	if retryDuration > maxRetryDuration {
+		retryDuration = maxRetryDuration
+	}
 	body, err := io.ReadAll(resp.Body)
 	_ = resp.Body.Close()
 	if err != nil {
@@ -522,79 +481,3 @@ again:
 }
 
 var remoteWriteRejectedLogger = logger.WithThrottler("remoteWriteRejected", 5*time.Second)
-var remoteWriteRetryLogger = logger.WithThrottler("remoteWriteRetry", 5*time.Second)
-
-// getRetryDuration returns retry duration.
-// retryAfterDuration has the highest priority.
-// If retryAfterDuration is not specified, retryDuration gets doubled.
-// retryDuration can't exceed maxRetryDuration.
-//
-// Also see: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6097
-func getRetryDuration(retryAfterDuration, retryDuration, maxRetryDuration time.Duration) time.Duration {
-	// retryAfterDuration has the highest priority duration
-	if retryAfterDuration > 0 {
-		return timeutil.AddJitterToDuration(retryAfterDuration)
-	}
-
-	// default backoff retry policy
-	retryDuration *= 2
-	if retryDuration > maxRetryDuration {
-		retryDuration = maxRetryDuration
-	}
-
-	return retryDuration
-}
-
-// repackBlockFromZstdToSnappy repacks the given zstd-compressed block to snappy-compressed block.
-//
-// The input block may be corrupted, for example, if vmagent was shut down ungracefully and
-// failed to properly update the persisted queue files. In such cases, zstd decompression
-// will fail and an error will be returned.
-//
-// For more details, see: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/9417
-func repackBlockFromZstdToSnappy(zstdBlock []byte) ([]byte, error) {
-	plainBlock := make([]byte, 0, len(zstdBlock)*2)
-	plainBlock, err := zstd.Decompress(plainBlock, zstdBlock)
-	if err != nil {
-		return nil, fmt.Errorf("zstd: decompress: %s", err)
-	}
-
-	return snappy.Encode(nil, plainBlock), nil
-}
-
-func logBlockRejected(block []byte, sanitizedURL string, resp *http.Response) {
-	body, err := io.ReadAll(resp.Body)
-	if err != nil {
-		remoteWriteRejectedLogger.Errorf("sending a block with size %d bytes to %q was rejected (skipping the block): status code %d; "+
-			"failed to read response body: %s",
-			len(block), sanitizedURL, resp.StatusCode, err)
-	} else {
-		remoteWriteRejectedLogger.Errorf("sending a block with size %d bytes to %q was rejected (skipping the block): status code %d; response body: %s",
-			len(block), sanitizedURL, resp.StatusCode, string(body))
-	}
-}
-
-// parseRetryAfterHeader parses `Retry-After` value retrieved from HTTP response header.
-// retryAfterString should be in either HTTP-date or a number of seconds.
-// It will return time.Duration(0) if `retryAfterString` does not follow RFC 7231.
-func parseRetryAfterHeader(retryAfterString string) (retryAfterDuration time.Duration) {
-	if retryAfterString == "" {
-		return retryAfterDuration
-	}
-
-	defer func() {
-		v := retryAfterDuration.Seconds()
-		logger.Infof("'Retry-After: %s' parsed into %.2f second(s)", retryAfterString, v)
-	}()
-
-	// Retry-After could be in "Mon, 02 Jan 2006 15:04:05 GMT" format.
-	if parsedTime, err := time.Parse(http.TimeFormat, retryAfterString); err == nil {
-		return time.Duration(time.Until(parsedTime).Seconds()) * time.Second
-	}
-	// Retry-After could be in seconds.
-	if seconds, err := strconv.Atoi(retryAfterString); err == nil {
-		return time.Duration(seconds) * time.Second
-	}
-
-	return 0
-}

app/vmagent/remotewrite/client_test.go

@@ -1,132 +0,0 @@
-package remotewrite
-
-import (
-	"math"
-	"net/http"
-	"testing"
-	"time"
-
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
-	"github.com/golang/snappy"
-)
-
-func TestCalculateRetryDuration(t *testing.T) {
-	// `testFunc` call `calculateRetryDuration` for `n` times
-	// and evaluate if the result of `calculateRetryDuration` is
-	// 1. >= expectMinDuration
-	// 2. <= expectMinDuration + 10% (see timeutil.AddJitterToDuration)
-	f := func(retryAfterDuration, retryDuration time.Duration, n int, expectMinDuration time.Duration) {
-		t.Helper()
-
-		for i := 0; i < n; i++ {
-			retryDuration = getRetryDuration(retryAfterDuration, retryDuration, time.Minute)
-		}
-
-		expectMaxDuration := helper(expectMinDuration)
-		expectMinDuration = expectMinDuration - (1000 * time.Millisecond) // Avoid edge case when calculating time.Until(now)
-
-		if retryDuration < expectMinDuration || retryDuration > expectMaxDuration {
-			t.Fatalf(
-				"incorrect retry duration, want (ms): [%d, %d], got (ms): %d",
-				expectMinDuration.Milliseconds(), expectMaxDuration.Milliseconds(),
-				retryDuration.Milliseconds(),
-			)
-		}
-	}
-
-	// Call calculateRetryDuration for 1 time.
-	{
-		// default backoff policy
-		f(0, time.Second, 1, 2*time.Second)
-		// default backoff policy exceed max limit"
-		f(0, 10*time.Minute, 1, time.Minute)
-
-		// retry after > default backoff policy
-		f(10*time.Second, 1*time.Second, 1, 10*time.Second)
-		// retry after < default backoff policy
-		f(1*time.Second, 10*time.Second, 1, 1*time.Second)
-		// retry after invalid and < default backoff policy
-		f(0, time.Second, 1, 2*time.Second)
-
-	}
-
-	// Call calculateRetryDuration for multiple times.
-	{
-		// default backoff policy 2 times
-		f(0, time.Second, 2, 4*time.Second)
-		// default backoff policy 3 times
-		f(0, time.Second, 3, 8*time.Second)
-		// default backoff policy N times exceed max limit
-		f(0, time.Second, 10, time.Minute)
-
-		// retry after 120s 1 times
-		f(120*time.Second, time.Second, 1, 120*time.Second)
-		// retry after 120s 2 times
-		f(120*time.Second, time.Second, 2, 120*time.Second)
-	}
-}
-
-func TestParseRetryAfterHeader(t *testing.T) {
-	f := func(retryAfterString string, expectResult time.Duration) {
-		t.Helper()
-
-		result := parseRetryAfterHeader(retryAfterString)
-		// expect `expectResult == result` when retryAfterString is in seconds or invalid
-		// expect the difference between result and expectResult to be lower than 10%
-		if !(expectResult == result || math.Abs(float64(expectResult-result))/float64(expectResult) < 0.10) {
-			t.Fatalf(
-				"incorrect retry after duration, want (ms): %d, got (ms): %d",
-				expectResult.Milliseconds(), result.Milliseconds(),
-			)
-		}
-	}
-
-	// retry after header in seconds
-	f("10", 10*time.Second)
-	// retry after header in date time
-	f(time.Now().Add(30*time.Second).UTC().Format(http.TimeFormat), 30*time.Second)
-	// retry after header invalid
-	f("invalid-retry-after", 0)
-	// retry after header not in GMT
-	f(time.Now().Add(10*time.Second).Format("Mon, 02 Jan 2006 15:04:05 FAKETZ"), 0)
-}
-
-// helper calculate the max possible time duration calculated by timeutil.AddJitterToDuration.
-func helper(d time.Duration) time.Duration {
-	dv := d / 10
-	if dv > 10*time.Second {
-		dv = 10 * time.Second
-	}
-
-	return d + dv
-}
-
-func TestRepackBlockFromZstdToSnappy(t *testing.T) {
-	expectedPlainBlock := []byte(`foobar`)
-
-	zstdBlock := encoding.CompressZSTDLevel(nil, expectedPlainBlock, 1)
-	snappyBlock, err := repackBlockFromZstdToSnappy(zstdBlock)
-	if err != nil {
-		t.Fatalf("unexpected error: %s", err)
-	}
-
-	actualPlainBlock, err := snappy.Decode(nil, snappyBlock)
-	if err != nil {
-		t.Fatalf("unexpected error: %s", err)
-	}
-
-	if string(actualPlainBlock) != string(expectedPlainBlock) {
-		t.Fatalf("unexpected plain block; got %q; want %q", actualPlainBlock, expectedPlainBlock)
-	}
-}
-
-func TestRepackBlockFromZstdToSnappyInvalidBlock(t *testing.T) {
-	snappyBlock, err := repackBlockFromZstdToSnappy([]byte("invalid zstd block"))
-
-	if err == nil {
-		t.Fatalf("expected error for invalid zstd block; got nil")
-	}
-	if len(snappyBlock) != 0 {
-		t.Fatalf("expected empty snappy block; got %d bytes", len(snappyBlock))
-	}
-}