[ISSUE #4291]♻️Refactor CI workflows to separate auto-approve and auto-merge actions for improved clarity and maintainability

Author: mxsm

.github/workflows/auto-approve.yml

@@ -0,0 +1,43 @@
+name: Auto Approve PR
+
+permissions:
+  pull-requests: write
+
+on:
+  workflow_run:
+    workflows: ["Rocketmq Rust CI"]
+    types:
+      - completed
+
+jobs:
+  auto-approve:
+    name: Auto Approve PR
+    runs-on: ubuntu-latest
+    if: >
+      github.event.workflow_run.event == 'pull_request' &&
+      github.event.workflow_run.conclusion == 'success'
+    steps:
+      - name: Get PR number
+        id: pr
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const pulls = await github.rest.pulls.list({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              state: 'open',
+              head: `${context.repo.owner}:${context.payload.workflow_run.head_branch}`
+            });
+            
+            if (pulls.data.length > 0) {
+              return pulls.data[0].number;
+            }
+            return null;
+
+      - name: Auto approve PR
+        if: steps.pr.outputs.result != 'null'
+        uses: hmarr/auto-approve-action@v4
+        with:
+          github-token: ${{ secrets.BOT_TOKEN }}
+          pull-request-number: ${{ steps.pr.outputs.result }}
+          review-message: "LGTM - All CI checks passed ✅"

.github/workflows/auto-merge.yml

@@ -0,0 +1,35 @@
+name: Auto Merge PR
+
+permissions:
+  contents: write
+  pull-requests: write
+
+on:
+  workflow_run:
+    workflows: ["Auto Approve PR"]
+    types:
+      - completed
+
+jobs:
+  auto-merge:
+    name: Auto Merge PR
+    runs-on: ubuntu-latest
+    if: >
+      github.event.workflow_run.event == 'pull_request' &&
+      github.event.workflow_run.conclusion == 'success'
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Auto merge
+        uses: pascalgn/automerge-action@v0.16.4
+        env:
+          GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
+          MERGE_LABELS: "auto merge"
+          MERGE_METHOD: "squash"
+          MERGE_COMMIT_MESSAGE: "automatic"
+          MERGE_FORKS: "true"
+          MERGE_RETRIES: "50"
+          MERGE_RETRY_SLEEP: "10000"
+          MERGE_REQUIRED_APPROVALS: "1"
+          UPDATE_METHOD: "rebase"

.github/workflows/ci.yaml

@@ -140,43 +140,4 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: lcov.info
           fail_ci_if_error: false
-          verbose: true
-
-  # Auto approve PR after all checks pass
-  auto-approve:
-    name: Auto Approve PR
-    runs-on: ubuntu-latest
-    needs: [ check, build-test, coverage ]
-    if: github.event_name == 'pull_request' && github.ref != 'refs/heads/main'
-    permissions:
-      pull-requests: write
-    steps:
-      - name: Auto approve PR
-        uses: hmarr/auto-approve-action@v4
-        with:
-          github-token: ${{ secrets.BOT_TOKEN }}
-          pull-request-number: ${{ github.event.pull_request.number }}
-          review-message: "LGTM - All CI checks passed ✅"
-
-  # Auto merge PR after approval
-  auto-merge:
-    name: Auto Merge PR
-    runs-on: ubuntu-latest
-    needs: [ auto-approve ]
-    if: github.event_name == 'pull_request' && github.ref != 'refs/heads/main' && contains(github.event.pull_request.labels.*.name, 'auto merge')
-    permissions:
-      contents: write
-      pull-requests: write
-    steps:
-      - name: Auto merge
-        uses: pascalgn/automerge-action@v0.16.4
-        env:
-          GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-          MERGE_LABELS: "auto merge"
-          MERGE_METHOD: "squash"
-          MERGE_COMMIT_MESSAGE: "automatic"
-          MERGE_FORKS: "true"
-          MERGE_RETRIES: "50"
-          MERGE_RETRY_SLEEP: "10000"
-          MERGE_REQUIRED_APPROVALS: "1"
-          UPDATE_METHOD: "rebase"
+          verbose: true