From b762592b5a56763f5d4cc475e16d63997575f299 Mon Sep 17 00:00:00 2001
From: Chenyang Ji <cyji@amazon.com>
Date: Wed, 19 Jun 2024 14:30:08 -0700
Subject: [PATCH] add backport github workflow

Signed-off-by: Chenyang Ji <cyji@amazon.com>
---
 .github/workflows/backport.yml               | 35 ++++++++++++++++++++
 .github/workflows/delete_backport_branch.yml | 20 +++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 .github/workflows/backport.yml
 create mode 100644 .github/workflows/delete_backport_branch.yml

diff --git a/.github/workflows/backport.yml b/.github/workflows/backport.yml
new file mode 100644
index 00000000..f8a9e0da
--- /dev/null
+++ b/.github/workflows/backport.yml
@@ -0,0 +1,35 @@
+name: Backport
+on:
+  pull_request_target:
+    types:
+      - closed
+      - labeled
+
+jobs:
+  backport:
+    name: Backport
+    runs-on: ubuntu-latest
+    # Only react to merged PRs for security reasons.
+    # See https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target.
+    if: >
+      github.event.pull_request.merged
+      && (
+        github.event.action == 'closed'
+        || (
+          github.event.action == 'labeled'
+          && contains(github.event.label.name, 'backport')
+        )
+      )
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - name: GitHub App token
+        id: github_app_token
+        uses: tibdex/github-app-token@v2.1.0
+        with:
+          app_id: ${{ secrets.APP_ID }}
+          private_key: ${{ secrets.APP_PRIVATE_KEY }}
+          installation_id: 22958780
+
+      - name: Backport
\ No newline at end of file
diff --git a/.github/workflows/delete_backport_branch.yml b/.github/workflows/delete_backport_branch.yml
new file mode 100644
index 00000000..39b5b342
--- /dev/null
+++ b/.github/workflows/delete_backport_branch.yml
@@ -0,0 +1,20 @@
+##
+# Copyright OpenSearch Contributors
+# SPDX-License-Identifier: Apache-2.0
+##
+
+name: Delete merged branch of the backport PRs
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  delete-branch:
+    runs-on: ubuntu-latest
+    if: startsWith(github.event.pull_request.head.ref,'backport/')
+    steps:
+      - name: Delete merged branch
+        uses: SvanBoxel/delete-merged-branch@main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file