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xserver/.github/scripts/github/gh-purge-deleted-branch-workflows.sh
Enrico Weigelt, metux IT consult cf50d3b37b .github: purge workflows on deleted branches
No need to keep workflows on already deleted branches, so purge them.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-09-15 14:08:09 +02:00

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#!/usr/bin/env bash
set -euo pipefail
usage() {
echo "Usage: $0 [--dry-run] [--workflow <name>] <owner/repo>"
echo
echo "Arguments:"
echo " --dry-run Only show which runs would be deleted (no deletion)"
echo " --workflow <name> Only purge runs from this workflow name (optional)"
echo " owner/repo GitHub repository in 'owner/repo' format"
exit 1
}
log_info() { echo "[INFO] $*"; }
log_warn() { echo "[WARN] $*" >&2; }
log_error() { echo "[ERROR] $*" >&2; exit 1; }
DRYRUN=false
WORKFLOW_FILTER=""
# Parse options
while [[ $# -gt 0 ]]; do
case $1 in
--dry-run)
DRYRUN=true
shift
;;
--workflow)
if [[ $# -lt 2 ]]; then
usage
fi
WORKFLOW_FILTER=$2
shift 2
;;
*)
if [[ -z "${REPO:-}" ]]; then
REPO=$1
shift
else
usage
fi
;;
esac
done
if [[ -z "${REPO:-}" ]]; then
usage
fi
if ! command -v gh >/dev/null 2>&1; then
log_error "GitHub CLI (gh) is required but not installed."
fi
if ! command -v jq >/dev/null 2>&1; then
log_error "jq is required but not installed."
fi
# Ensure user is logged in
if ! gh auth status >/dev/null 2>&1; then
log_error "You are not logged in to GitHub CLI. Run: gh auth login"
fi
# Get all existing branches
log_info "Fetching existing branches..."
existing_branches=$(gh api -H "Accept: application/vnd.github+json" \
"/repos/${REPO}/branches?per_page=100" --paginate \
| jq -r '.[].name' | sort -u)
if [[ -z "$existing_branches" ]]; then
log_warn "No branches found in repo. Aborting."
exit 0
fi
log_info "Found $(echo "$existing_branches" | wc -l) branches."
# Fetch workflow runs
log_info "Fetching workflow runs..."
gh api -H "Accept: application/vnd.github+json" \
"/repos/${REPO}/actions/runs?per_page=100" --paginate \
| jq -c '.workflow_runs[] | {id: .id, branch: .head_branch, workflow: .name}' \
| while read -r run; do
run_id=$(echo "$run" | jq -r '.id')
run_branch=$(echo "$run" | jq -r '.branch')
workflow_name=$(echo "$run" | jq -r '.workflow')
if [[ -z "$run_branch" ]]; then
log_warn "Run $run_id has no branch (skipping)."
continue
fi
# Skip if branch exists
if echo "$existing_branches" | grep -qx "$run_branch"; then
continue
fi
# Skip if workflow filter is set and does not match
if [[ -n "$WORKFLOW_FILTER" && "$workflow_name" != "$WORKFLOW_FILTER" ]]; then
continue
fi
if [[ "$DRYRUN" == true ]]; then
log_info "[DRY-RUN] Would delete run $run_id (branch: $run_branch, workflow: $workflow_name)"
else
log_info "Deleting run $run_id (branch: $run_branch, workflow: $workflow_name)"
gh api -X DELETE \
"/repos/${REPO}/actions/runs/${run_id}" >/dev/null || true
fi
done
if [[ "$DRYRUN" == true ]]; then
log_info "Dry-run finished. No runs were deleted."
else
log_info "Finished purging workflow runs for deleted branches."
fi