From 237341203b866f9619561091ee72543312315028 Mon Sep 17 00:00:00 2001
From: Taylor Jones <tay1orjones@users.noreply.github.com>
Date: Wed, 1 Nov 2023 08:18:55 -0500
Subject: [PATCH] ci(cache): cleanup caches after PRs merge (#15078)

* ci(cache): turn off caching in the merge queue

* ci(cache): cleanup caches after PRs merge
---
 .github/workflows/cleanup-caches.yml | 30 ++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 .github/workflows/cleanup-caches.yml

diff --git a/.github/workflows/cleanup-caches.yml b/.github/workflows/cleanup-caches.yml
new file mode 100644
index 000000000000..f447af3c850e
--- /dev/null
+++ b/.github/workflows/cleanup-caches.yml
@@ -0,0 +1,30 @@
+# https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#force-deleting-cache-entries
+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