mirror of
https://github.com/LibreQoE/LibreQoS.git
synced 2026-10-25 06:17:39 -05:00
Herbert Wolverson
4577b9b5b1
Both workflows ran their full pipelines on every push, including docs-only and opposite-language changes, which wasted runner time and reported failures unrelated to the change under test. Add a shared detect-changes workflow that diffs the pushed or PR range against per-group patterns and exposes a matched output. The heavy jobs run only when their group changed, or when detection itself fails, so a broken detector cannot silently skip checks. Tag pushes and unknown events fall back to running everything. Include .github/scripts/test-changed-files.sh, a manual harness for the detection logic that follows the repo's existing shell self-tests.
133 lines
3.6 KiB
Bash
Executable File
133 lines
3.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Decide whether files relevant to a CI job changed in the current run.
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#
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# Usage: changed-files.sh <python|rust>
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#
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# Reads the standard GITHUB_* environment plus EVENT_BEFORE and DEFAULT_BRANCH
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# (supplied by the calling workflow) and writes "matched=true|false" to
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# $GITHUB_OUTPUT. Matching files are listed on stdout for the workflow log.
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# If the change range cannot be determined, the group is reported as matched
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# so that a CI job is never silently skipped.
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set -euo pipefail
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group="${1:-}"
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case "$group" in
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python)
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patterns=(
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'*.py'
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'requirements*.txt'
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'.github/workflows/lint_python.yml'
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'.github/workflows/detect-changes.yml'
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'.github/scripts/*'
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)
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;;
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rust)
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# The Rust workspace plus the build scripts the Rust workflow executes.
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# Files that are only copied into the .deb (Python sources, service
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# examples) do not trigger this group.
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patterns=(
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'src/rust/*'
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'src/build_dpkg.sh'
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'src/build_rust.sh'
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'src/VERSION_STRING'
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'.github/workflows/rust.yml'
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'.github/workflows/detect-changes.yml'
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'.github/scripts/*'
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)
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;;
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*)
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echo "usage: $0 <python|rust>" >&2
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exit 2
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;;
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esac
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# Report every tracked file as changed; used when no change range is available.
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all_tracked_files() {
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echo "Treating every tracked file as changed." >&2
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git -c core.quotePath=false ls-files
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}
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# Files touched by this run, one per line.
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changed_files() {
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local base_ref=""
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local merge_base
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# Tag pushes have no meaningful change range; run everything.
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if [[ "${GITHUB_REF:-}" == refs/tags/* ]]; then
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all_tracked_files
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return
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fi
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case "${GITHUB_EVENT_NAME:-}" in
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pull_request)
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# Pull requests check out a merge commit; diff against the merge base
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# so files that only changed on the base branch are not reported.
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if [[ -n "${GITHUB_BASE_REF:-}" ]]; then
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base_ref="origin/${GITHUB_BASE_REF}"
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fi
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;;
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push)
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# github.event.before is the previously pushed commit; a new branch
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# pushes the all-zero object id and falls back to the default branch.
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if [[ -n "${EVENT_BEFORE:-}" && ! "${EVENT_BEFORE}" =~ ^0+$ ]] &&
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git rev-parse --verify --quiet "${EVENT_BEFORE}^{commit}" >/dev/null; then
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git -c core.quotePath=false diff --name-only "${EVENT_BEFORE}" "${GITHUB_SHA:-HEAD}"
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return
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fi
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if [[ -n "${DEFAULT_BRANCH:-}" ]]; then
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base_ref="origin/${DEFAULT_BRANCH}"
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fi
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;;
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*)
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all_tracked_files
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return
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;;
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esac
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if [[ -n "$base_ref" ]] && git rev-parse --verify --quiet "$base_ref" >/dev/null; then
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merge_base="$(git merge-base "$base_ref" HEAD)"
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git -c core.quotePath=false diff --name-only "$merge_base" HEAD
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return
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fi
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all_tracked_files
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}
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# Does a changed file belong to the requested group?
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matches_group() {
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local pattern
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for pattern in "${patterns[@]}"; do
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if [[ "$1" == $pattern ]]; then
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return 0
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fi
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done
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return 1
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}
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if ! changed="$(changed_files)"; then
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changed="$(all_tracked_files)"
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fi
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matching_files=()
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while IFS= read -r file; do
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if [[ -n "$file" ]] && matches_group "$file"; then
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matching_files+=("$file")
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fi
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done <<< "$changed"
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if (( ${#matching_files[@]} > 0 )); then
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echo "Change group '$group': matching files changed:"
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printf ' %s\n' "${matching_files[@]}"
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else
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echo "Change group '$group': no matching files changed."
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fi
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if [[ -n "${GITHUB_OUTPUT:-}" ]]; then
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if (( ${#matching_files[@]} > 0 )); then
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echo "matched=true" >> "$GITHUB_OUTPUT"
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else
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echo "matched=false" >> "$GITHUB_OUTPUT"
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fi
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fi
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