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CleanUpCache

CleanUpCache #890

Workflow file for this run

name: CleanUpCache
on:
workflow_run:
workflows: [👑 CI]
types:
- completed
jobs:
CleanUpCcacheCache:
name: Clean Up Ccache Cache for ${{ github.event.workflow_run.name }}
runs-on: ubuntu-latest
permissions:
actions: write
contents: read
env:
GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
steps:
- uses: actions/checkout@v4
- name: Clean up ccache
run: |
gh extension install actions/gh-actions-cache
REPO=${{ github.repository }}
# push or pull_request or schedule or ...
EVENT=${{ github.event.workflow_run.event }}
# Triggering workflow run name (e.g., LinuxClang)
WORKFLOW_NAME="${{ github.event.workflow_run.name }}"
# For debugging, cat ${GITHUB_EVENT_PATH} to see the payload.
if [[ $EVENT == "pull_request" ]]; then
pr_head_sha=${{ github.event.workflow_run.head_sha }}
pr_number=$(gh pr list --search $pr_head_sha --json number --jq '.[0].number')
echo "Clean up cache for PR ${pr_number}"
BRANCH=refs/pull/${pr_number}/merge
else
BRANCH=refs/heads/${{ github.event.workflow_run.head_branch }}
fi
# Setting this to not fail the workflow while deleting cache keys.
set +e
# In our cache keys, substring after `-git-` is git hash, substring
# before that is a unique id for jobs (e.g., `ccache-LinuxClang-configure-2d`).
# The goal is to keep the last used key of each job and delete all others.
# something like ccache-LinuxClang-
keyprefix="ccache-${WORKFLOW_NAME}-"
cached_jobs=$(gh actions-cache list -L 100 -R $REPO -B $BRANCH --key "$keyprefix" | awk -F '-git-' '{print $1}' | sort | uniq)
# cached_jobs is something like "ccache-LinuxClang-configure-1d ccache-LinuxClang-configure-2d".
# It might also contain spaces. Thus we set IFS to \n.
IFS=$'\n'
for j in $cached_jobs
do
# Delete all entries except the last used one
old_keys=$(gh actions-cache list -L 100 -R $REPO -B $BRANCH --key "${j}-git-" --sort last-used | cut -f 1 | tail -n +2)
for k in $old_keys
do
gh actions-cache delete "$k" -R $REPO -B $BRANCH --confirm
done
done
unset IFS