ci: automatically cherry-pick/backport PR (#489)

Signed-off-by: Lin Yang <[email protected]>

.github/pr-title-checker-config.json

@@ -4,11 +4,13 @@
     "color": "EEEEEE"
   },
   "CHECKS": {
-    "regexp": "^(\\[WIP\\]|\\[BACKPORT\\]|\\[CHERRY-PICK\\])?( )?(feat|fix|docs|build|test|ci|chore|refactor|perf)!?(\\(.*\\))?!?:.*"
+    "regexp": "^(\\[wip\\]|\\[backport\\]|\\[cherry-pick\\])?( )?(feat|fix|docs|build|test|ci|chore|refactor|perf)!?(\\(.*\\))?!?:.*",
+    "regexpFlags": "i",
+    "ignoreLabels" : ["dont-check-PR-title"]
   },
   "MESSAGES": {
     "success": "PR title is valid",
     "failure": "PR title is invalid",
-    "notice": "PR Title needs to pass regex '^(\\[WIP\\]|\\[BACKPORT\\]|\\[CHERRY-PICK\\])?( )?(feat|fix|docs|build|test|ci|chore|refactor|perf)!?(\\(.*\\))?!?:.*'"
+    "notice": "PR Title needs to pass case insensitive regex '^(\\[wip\\]|\\[backport\\]|\\[cherry-pick\\])?( )?(feat|fix|docs|build|test|ci|chore|refactor|perf)!?(\\(.*\\))?!?:.*'"
   }
 }

.github/workflows/backport.yml

@@ -0,0 +1,31 @@
+on:
+  pull_request:
+    branches:
+      - main
+    types: ['closed']
+
+env:
+  GITHUB_TOKEN: ${{ secrets.WORKFLOW_PAT }}
+
+jobs:
+  backport_v1_4:
+    runs-on: ubuntu-latest
+    name: Backport into release/v1.4
+    if: ${{ !startsWith(github.event.pull_request.title, '[cherry-pick]') && github.repository == 'flomesh-io/fsm' && github.event.pull_request.merged == true }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Backport into release/v1.4
+        uses: korthout/backport-action@v3
+        with:
+          copy_assignees: true
+          copy_labels_pattern: '*'
+          copy_requested_reviewers: true
+          github_token: ${{ secrets.WORKFLOW_PAT }}
+          pull_title: '[backport] ${pull_title}'
+          pull_description: 'Backport #${pull_number} to `${target_branch}`.'
+          target_branches: 'release/v1.4'
+
+

.github/workflows/cherry-pick.yml

@@ -0,0 +1,31 @@
+on:
+  pull_request:
+    branches:
+      - release/v1.4
+    types: ['closed']
+
+env:
+  GITHUB_TOKEN: ${{ secrets.WORKFLOW_PAT }}
+
+jobs:
+  cherry_pick_main:
+    runs-on: ubuntu-latest
+    name: Cherry pick into main
+    if: ${{ !startsWith(github.event.pull_request.title, '[backport]') && github.repository == 'flomesh-io/fsm' && github.event.pull_request.merged == true }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Cherry pick into main
+        uses: korthout/backport-action@v3
+        with:
+          copy_assignees: true
+          copy_labels_pattern: '*'
+          copy_requested_reviewers: true
+          github_token: ${{ secrets.WORKFLOW_PAT }}
+          pull_title: '[cherry-pick] ${pull_title}'
+          pull_description: 'Cherry picking #${pull_number} to `${target_branch}`.'
+          target_branches: 'main'
+
+