Enhance Benchmark Results with n8n (#1162)

Improves visibility of performance metrics by storing benchmark results
from main branch and forwarding PR comparisons to n8n. Added automated
unit conversion, categorized result tables, and performance difference
highlighting to facilitate data-driven development decisions.

.github/workflows/ci.yml

@@ -116,25 +116,62 @@ jobs:
         run: docker compose -f build/docker/docker-compose.yml up --build -d
 
       - name: Bench
-        run: make bench
+        id: curr-bench
+        run: |
+          make bench
+          content=$(cat output.txt | jq -R -s .)
+          echo "BENCH_RESULT=$content" >> $GITHUB_OUTPUT
 
-      - name: Download previous benchmark data
+      - name: Set up cache
         uses: actions/cache@v3
         with:
           path: ./cache
           key: ${{ runner.os }}-benchmark
 
-      - name: Store benchmark result
-        uses: benchmark-action/github-action-benchmark@v1
-        if: ${{ github.event.pull_request.head.repo.full_name == github.repository }}
-        with:
-          name: Go Benchmark
-          tool: "go"
-          output-file-path: output.txt
-          external-data-json-path: ./cache/benchmark-data.json
-          fail-on-alert: false
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          comment-always: true
+      - name: Read previous benchmark result
+        if: github.event_name == 'pull_request'
+        id: prev-bench
+        run: |
+          echo "PREV_BENCH_RESULT=null" >> $GITHUB_OUTPUT
+          echo "PREV_COMMIT=null" >> $GITHUB_OUTPUT
+
+          if [ -f "./cache/bench_result.txt" ]; then
+            content=$(cat ./cache/bench_result.txt | jq -R -s .)
+            echo "PREV_BENCH_RESULT=$content" >> $GITHUB_OUTPUT
+            
+            if [ -f "./cache/commit_hash.txt" ]; then
+              prev_commit=$(cat ./cache/commit_hash.txt)
+              echo "PREV_COMMIT=$prev_commit" >> $GITHUB_OUTPUT
+            fi
+          fi
+
+      - name: Trigger n8n webhook
+        if: github.event_name == 'pull_request'
+        run: |
+          curr_bench=$(cat output.txt | jq -R -s .)
+
+          response=$(curl -f -X POST ${{ secrets.N8N_WEBHOOK_URL }} \
+          -H "Content-Type: application/json" \
+          -d '{
+            "repo": "${{ github.repository }}",
+            "pr_number": "${{ github.event.pull_request.number }}",
+            "commit_id": "${{ github.sha }}",
+            "prev_commit_id": "${{ steps.prev-bench.outputs.PREV_COMMIT }}",
+            "bench_result": ${{ steps.curr-bench.outputs.BENCH_RESULT }},
+            "prev_bench_result": ${{ steps.prev-bench.outputs.PREV_BENCH_RESULT }}
+          }' || echo "CURL_ERROR")
+
+          if [ "$response" = "CURL_ERROR" ]; then
+            echo "::error::Failed to trigger n8n webhook"
+            exit 1
+          fi
+
+      - name: Store benchmark result to cache
+        if: github.ref == 'refs/heads/main'
+        run: |
+          mkdir -p ./cache
+          cp output.txt ./cache/bench_result.txt
+          echo "${{ github.sha }}" > ./cache/commit_hash.txt
 
   complex-test:
     name: complex-test