ci: refine auto rerun controller policy

Author: contrueCT

.github/workflows/rerun-ci.yml

@@ -9,26 +9,75 @@ on:
       - "Cluster Test CI"
     types:
       - completed
+    branches:
+      - master
+      - 'release-*'
+      - 'test-*'
 
 permissions:
   actions: write
   contents: read
 
+env:
+  MAX_RERUNS: '2'
+  RETRY_DELAY_SECONDS: '180'
+
 jobs:
   rerun-failed-jobs:
-    if: >-
-      github.event.workflow_run.conclusion == 'failure' &&
-      fromJSON(github.event.workflow_run.run_attempt) < 2
     runs-on: ubuntu-latest
     steps:
-      - name: Show rerun target
+      - name: Decide rerun action
+        id: decision
+        env:
+          WORKFLOW_NAME: ${{ github.event.workflow_run.name }}
+          RUN_ID: ${{ github.event.workflow_run.id }}
+          RUN_ATTEMPT: ${{ github.event.workflow_run.run_attempt }}
+          CONCLUSION: ${{ github.event.workflow_run.conclusion }}
+          EVENT_NAME: ${{ github.event.workflow_run.event }}
+          HEAD_BRANCH: ${{ github.event.workflow_run.head_branch }}
+        run: |
+          set -euo pipefail
+
+          action="skip"
+          reason="non-failure"
+
+          if [[ "$CONCLUSION" == "failure" ]]; then
+            if [[ "$EVENT_NAME" != "push" && "$EVENT_NAME" != "pull_request" ]]; then
+              reason="unsupported event: $EVENT_NAME"
+            elif (( RUN_ATTEMPT > MAX_RERUNS )); then
+              reason="retry limit reached"
+            else
+              action="rerun"
+              reason="within retry limit"
+            fi
+          fi
+
+          {
+            echo "action=$action"
+            echo "reason=$reason"
+          } >> "$GITHUB_OUTPUT"
+
+          {
+            echo "### Rerun CI decision"
+            echo ""
+            echo "- Workflow: $WORKFLOW_NAME"
+            echo "- Source event: $EVENT_NAME"
+            echo "- Head branch: $HEAD_BRANCH"
+            echo "- Run ID: $RUN_ID"
+            echo "- Current attempt: $RUN_ATTEMPT"
+            echo "- Max automatic reruns: $MAX_RERUNS"
+            echo "- Delay seconds: $RETRY_DELAY_SECONDS"
+            echo "- Action: $action"
+            echo "- Reason: $reason"
+          } >> "$GITHUB_STEP_SUMMARY"
+
+      - name: Wait before rerun
+        if: steps.decision.outputs.action == 'rerun'
         run: |
-          echo "Workflow: ${{ github.event.workflow_run.name }}"
-          echo "Run ID: ${{ github.event.workflow_run.id }}"
-          echo "Run attempt: ${{ github.event.workflow_run.run_attempt }}"
-          echo "Conclusion: ${{ github.event.workflow_run.conclusion }}"
+          sleep "$RETRY_DELAY_SECONDS"
 
       - name: Rerun failed jobs
+        if: steps.decision.outputs.action == 'rerun'
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GH_REPO: ${{ github.repository }}