Introduce the first bot that triggers benchmarks

.github/workflows/benchmarks-manual.yml

@@ -74,4 +74,4 @@ jobs:
           echo "${{ steps.file.outputs.basename }}.json has just been pushed."
           echo 'How to compare this benchmark with another one?'
           echo '  - Check the available files with: ./benchmarks/scripts/list.sh'
-          echo "  - Run the following command: ./benchmaks/scipts/compare.sh <file-to-compare-with> ${{ steps.file.outputs.basename }}.json"
+          echo "  - Run the following command: ./benchmaks/scripts/compare.sh <file-to-compare-with> ${{ steps.file.outputs.basename }}.json"

.github/workflows/trigger-benchmarks-on-message.yml

@@ -0,0 +1,76 @@
+name: Run and display benchmarks in a PR
+on:
+  issue_comment:
+    types: [created, edited]
+
+env:
+  BENCH_NAME: search_geo
+  GH_TOKEN: ${{ secrets.MEILI_BOT_GH_PAT }}
+
+jobs:
+  run-benchmarks-on-comment:
+    if: contains(github.event.comment.body, '@meilisearch run benchmarks')
+    name: Run and upload benchmarks
+    runs-on: benchmarks
+    timeout-minutes: 4320 # 72h
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      # Set variables
+      - name: Set current branch name
+        shell: bash
+        run: echo "name=$(echo ${GITHUB_REF#refs/heads/})" >> $GITHUB_OUTPUT
+        id: current_branch
+      - name: Set normalized current branch name # Replace `/` by `_` in branch name to avoid issues when pushing to S3
+        shell: bash
+        run: echo "name=$(echo ${GITHUB_REF#refs/heads/} | tr '/' '_')" >> $GITHUB_OUTPUT
+        id: normalized_current_branch
+      - name: Set shorter commit SHA
+        shell: bash
+        run: echo "short=$(echo $GITHUB_SHA | cut -c1-8)" >> $GITHUB_OUTPUT
+        id: commit_sha
+      - name: Set file basename with format "dataset_branch_commitSHA"
+        shell: bash
+        run: echo "basename=$(echo ${BENCH_NAME}_${{ steps.normalized_current_branch.outputs.name }}_${{ steps.commit_sha.outputs.short }})" >> $GITHUB_OUTPUT
+        id: file
+
+      # Run benchmarks
+      - name: Run benchmarks - Dataset ${BENCH_NAME} - Branch ${{ steps.current_branch.outputs.name }} - Commit ${{ steps.commit_sha.outputs.short }}
+        run: |
+          cd benchmarks
+          cargo bench --bench ${BENCH_NAME} -- --save-baseline ${{ steps.file.outputs.basename }}
+
+      # Generate critcmp files
+      - name: Install critcmp
+        uses: taiki-e/install-action@v2
+        with:
+          tool: critcmp
+      - name: Export cripcmp file
+        run: |
+          critcmp --export ${{ steps.file.outputs.basename }} > ${{ steps.file.outputs.basename }}.json
+
+      # Upload benchmarks
+      - name: Upload ${{ steps.file.outputs.basename }}.json to DO Spaces # DigitalOcean Spaces = S3
+        uses: BetaHuhn/do-spaces-action@v2
+        with:
+          access_key: ${{ secrets.DO_SPACES_ACCESS_KEY }}
+          secret_key: ${{ secrets.DO_SPACES_SECRET_KEY }}
+          space_name: ${{ secrets.DO_SPACES_SPACE_NAME }}
+          space_region: ${{ secrets.DO_SPACES_SPACE_REGION }}
+          source: ${{ steps.file.outputs.basename }}.json
+          out_dir: critcmp_results
+
+      # Compute the diff of the benchmarks and send a message on the GitHub PR
+      - name: Compute and send a message in the PR
+        run: |
+          export base=git rev-parse $(git cherry main | head -n 1 | cut -c 3-)~ | cut -c -8
+          echo 'Here are your benchmarks diff 👊' >> body.txt
+          echo '```' >> body.txt
+          ./benchmaks/scipts/compare.sh $base ${{ steps.file.outputs.basename }}.json >> body.txt
+          echo '```' >> body.txt
+          gh pr comment ${GITHUB_REF#refs/heads/} --body-file body.txt