From b1b077c0c3a6d44f0907080afcc772d9e7a0f196 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9C=D0=B0=D1=80=D1=82=D1=8B=D0=BD=D0=BE=D0=B2=20=D0=9C?=
 =?UTF-8?q?=D0=B0=D0=BA=D1=81=D0=B8=D0=BC=20=D0=A1=D0=B5=D1=80=D0=B3=D0=B5?=
 =?UTF-8?q?=D0=B5=D0=B2=D0=B8=D1=87?= <msmarty5@mts.ru>
Date: Mon, 22 Apr 2024 18:39:11 +0300
Subject: [PATCH] [DOP-14025] Cleanup unused cache after merging PR

---
 .github/workflows/cache-cleanup.yml | 40 +++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 .github/workflows/cache-cleanup.yml

diff --git a/.github/workflows/cache-cleanup.yml b/.github/workflows/cache-cleanup.yml
new file mode 100644
index 0000000..0f6b3fc
--- /dev/null
+++ b/.github/workflows/cache-cleanup.yml
@@ -0,0 +1,40 @@
+name: Cleanup caches after merge
+on:
+  pull_request:
+    types:
+      - closed
+  workflow_dispatch:
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    permissions:
+      # `actions:write` permission is required to delete caches
+      #  See also: https://docs.github.com/en/rest/actions/cache?apiVersion=2022-11-28#delete-a-github-actions-cache-for-a-repository-using-a-cache-id
+      actions: write
+      contents: read
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Cleanup cache
+        run: |
+          gh extension install actions/gh-actions-cache
+
+          REPO=${{ github.repository }}
+          BRANCH=refs/pull/${{ github.event.pull_request.number }}/merge
+
+          echo "Fetching list of cache key"
+          cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH --limit 100 --sort size | 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 }}