Clear a GitHub repository's cache

gh_clear_cache.sh

#!/bin/bash -e

# Note: For actions-cache to work one must pass or set a GITHUB_TOKEN variable with a valid PAT.

function print_help {
  echo "usage: $0 -r <user/repository_name> [-b <branch>]"
  echo "    -r        Repository. The format must be: <user/repository_name>"
  echo "    -b        Delete cache for specific branch only"
  echo "e.g.: $0 -r xalvarez/github-team-dashboard -b main"
}

while getopts "r:b:h" option; do
  case "${option}" in
    r)
      REPOSITORY=${OPTARG}
      ;;
    b)
      BRANCH=${OPTARG}
      ;;
    h | *)
      print_help
      exit 0
      ;;
  esac
done

if [ -z "$REPOSITORY" ]; then
  echo "ERROR: Missing repository argument"
  print_help
  exit 1
fi

gh extension install --force actions/gh-actions-cache

echo "Retrieving cache entries..."

CACHE_ENTRIES=$(gh actions-cache list -R "$REPOSITORY" ${BRANCH:+"-B $BRANCH"} -L 100 --sort last-used | cut -f 1 | uniq -u)

if [ -z "$CACHE_ENTRIES" ]; then
  echo "Did not find any cache entries"
  exit 0
fi

for cacheEntry in ${CACHE_ENTRIES}; do
  echo "Deleting cache entry $cacheEntry"
  gh actions-cache delete "$cacheEntry" -R "$REPOSITORY" ${BRANCH:+"-B $BRANCH"} --confirm | true
done

echo "Done"