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Richard Mrasek 9188fe7302
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fix: use detached SHA for HEAD worktree to avoid branch collision
2026-06-12 10:24:27 +02:00

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#!/usr/bin/env bash
set -euo pipefail
# --- Configuration (override with env vars in CI) ---
DIFF_OUTPUT="${DIFF_OUTPUT:-deleted_workflows.txt}"
BASE_REF="${BASE_REF:-${GITHUB_BASE_REF:-main}}"
HEAD_REF="${HEAD_REF:-${GITHUB_HEAD_REF:-HEAD}}"
REPOSITORY_FILE="${REPOSITORY_FILE:-src/template_code_location/repository.py}"
FAIL_ON_DELETION="${FAIL_ON_DELETION:-true}"
TMP_DIR="$(mktemp -d)"
BASE_DIR="${TMP_DIR}/base"
HEAD_DIR="${TMP_DIR}/head"
BASE_JOBS_FILE="${TMP_DIR}/base_jobs.txt"
HEAD_JOBS_FILE="${TMP_DIR}/head_jobs.txt"
export DAGSTER_HOME="$(mktemp -d)"
cleanup() {
git worktree remove -f "${BASE_DIR}" >/dev/null 2>&1 || true
git worktree remove -f "${HEAD_DIR}" >/dev/null 2>&1 || true
rm -rf "${TMP_DIR}" "${DAGSTER_HOME}"
}
trap cleanup EXIT
get_jobs_for_ref() {
local workdir="$1"
(
cd "${workdir}"
PYTHONPATH="${workdir}/src${PYTHONPATH:+:${PYTHONPATH}}" \
dagster job list -f "${REPOSITORY_FILE}" 2>/dev/null | \
grep '^Job: ' | \
awk '{print $2}' | \
sort -u
)
}
echo "Fetching refs from origin..."
git fetch origin --quiet
if ! git rev-parse --verify "${BASE_REF}" >/dev/null 2>&1; then
git fetch origin --quiet "${BASE_REF}:${BASE_REF}"
fi
if [ "${HEAD_REF}" != "HEAD" ] && ! git rev-parse --verify "${HEAD_REF}" >/dev/null 2>&1; then
git fetch origin --quiet "${HEAD_REF}:${HEAD_REF}"
fi
echo "Preparing worktrees for ${BASE_REF} and ${HEAD_REF}..."
git worktree add --quiet "${BASE_DIR}" "${BASE_REF}"
# Use detached commit SHA for HEAD to avoid "already used by worktree" error
HEAD_SHA="$(git rev-parse "${HEAD_REF}")"
git worktree add --quiet --detach "${HEAD_DIR}" "${HEAD_SHA}"
echo "Collecting workflows/jobs from ${BASE_REF}..."
get_jobs_for_ref "${BASE_DIR}" > "${BASE_JOBS_FILE}" || true
echo "Collecting workflows/jobs from ${HEAD_REF}..."
get_jobs_for_ref "${HEAD_DIR}" > "${HEAD_JOBS_FILE}" || true
# comm -23: items present in base but missing from head
comm -23 "${BASE_JOBS_FILE}" "${HEAD_JOBS_FILE}" > "${DIFF_OUTPUT}"
if [ -s "${DIFF_OUTPUT}" ]; then
echo "------------------------------------------------"
echo "DELETED WORKFLOWS DETECTED"
echo "The following workflows/jobs exist in ${BASE_REF} but are missing in ${HEAD_REF}:"
cat "${DIFF_OUTPUT}"
echo "------------------------------------------------"
if [ "${FAIL_ON_DELETION}" = "true" ]; then
exit 1
fi
else
echo "No workflows/jobs were deleted in ${HEAD_REF} compared to ${BASE_REF}."
rm -f "${DIFF_OUTPUT}"
fi