Cleanup caches for closed PRs #911

	name: Cleanup caches for closed PRs

	on:
	# Run twice every day to remove the cache so that the caches from the closed prs
	# are removed.
	schedule:
	- cron: "0 17 * * *"
	- cron: "30 18 * * *"
	workflow_dispatch:

	jobs:
	cleanup:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Cleanup
	run: \|
	set -euxo pipefail

	gh extension install actions/gh-actions-cache

	export REPO="${{ github.repository }}"

	# Setting this to not fail the workflow while deleting cache keys.
	set +e

	# Remove pull requests cache, since they cannot be reused
	gh pr list --state closed -L 20 --json number --jq '.[]\|.number' \| (
	while IFS='$\n' read -r closed_pr; do
	BRANCH="refs/pull/${closed_pr}/merge" ./cleanup-cache.sh
	done
	)
	# Remove merge queue cache, since they cannot be reused
	gh actions-cache list -L 100 \| cut -f 3 \| (grep 'gh-readonly-queue' \|\| true) \| sort -u \| (
	while IFS='$\n' read -r branch; do
	BRANCH="$branch" ./cleanup-cache.sh
	done
	)
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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