From ef53cb38e3528b55e97a2f3104e62073556a3efe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Renato=20Foot=20Guimar=C3=A3es=20Costallat?=
 <costallat@hotmail.com>
Date: Wed, 1 Nov 2023 11:21:16 -0300
Subject: [PATCH] ci/cl: clear GitHub actions cache on PR closure (#1751)

Clean GHA cache related to the PR being closed.
---
 .github/workflows/clean-cache.yaml | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 .github/workflows/clean-cache.yaml

diff --git a/.github/workflows/clean-cache.yaml b/.github/workflows/clean-cache.yaml
new file mode 100644
index 00000000000..ed298937a51
--- /dev/null
+++ b/.github/workflows/clean-cache.yaml
@@ -0,0 +1,30 @@
+---
+name: Cleanup caches by a branch
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Cleanup
+        run: |
+          gh extension install actions/gh-actions-cache
+
+          echo "Fetching list of cache key"
+          cacheKeysForPR=$(gh actions-cache list -R "$REPO" -B "$BRANCH" -L 100 | cut -f 1 )
+
+          ## Setting this to not fail the workflow while deleting cache keys.
+          set +e
+          echo "Deleting caches..."
+          for cacheKey in $cacheKeysForPR
+          do
+              gh actions-cache delete "$cacheKey" -R "$REPO" -B "$BRANCH" --confirm
+          done
+          echo "Done"
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          REPO: ${{ github.repository }}
+          BRANCH: refs/pull/${{ github.event.pull_request.number }}/merge