CI: pre-existing reds on main since 5e75753 (lock drift, startup_failure ×4, unnamed runs ×3) #1
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| # This workflow is managed by gh actions-lock. | |
| # SPDX-License-Identifier: MPL-2.0 | |
| name: Label Triage | |
| # Classify newly-filed issues against the estate label taxonomy. | |
| # | |
| # The sweep that established the taxonomy is a one-off; this is what stops it | |
| # decaying. Without it every new issue arrives unlabelled and the 55%-unlabelled | |
| # state rebuilds itself. | |
| # | |
| # ⚠ NO `uses:` ANYWHERE, DELIBERATELY. The estate enforces | |
| # .github/workflows/actions.lock, which is keyed BY WORKFLOW PATH: a workflow | |
| # the lock does not list is rejected before any step runs (startup_failure, and | |
| # therefore no check run at all). A dispatched workflow lands in repos whose | |
| # lock has not been regenerated, so it must not depend on any action. | |
| # | |
| # ⚠ THE CLASSIFIER IS jq, NOT PYTHON. Python is fully banned estate-wide -- the | |
| # `governance / Language / package anti-pattern policy` gate runs | |
| # `git ls-files '*.py'` and fails the PR. Shipping a .py into 416 repos would | |
| # mean shipping an exemption into 416 repos. jq is preinstalled on every GitHub | |
| # runner, is not banned, and needs no action. | |
| # | |
| # Deliberately conservative: | |
| # - ADDITIVE ONLY. It never removes a label and never overrides a human's | |
| # classification: anything already on the issue is passed in via `have` and | |
| # is never re-suggested, and the classifier stays out of any max-1 tier the | |
| # issue already carries a label in. | |
| # - SILENT WHEN UNSURE. Nothing is printed unless a prefix, bracket or type | |
| # rule actually fired. Roughly 70% of the historical corpus classified this | |
| # way; the rest is meant to reach a human. | |
| # - NEVER FAILS THE ISSUE. Every step is best-effort; a missing payload or an | |
| # API hiccup exits 0 rather than leaving a red mark on someone's bug report. | |
| on: | |
| issues: | |
| types: [opened, reopened] | |
| workflow_dispatch: | |
| inputs: | |
| issue: | |
| description: "Issue number to (re)classify" | |
| required: true | |
| permissions: | |
| issues: write | |
| contents: read | |
| jobs: | |
| triage: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Classify and label | |
| env: | |
| GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| NUM: ${{ github.event.issue.number || inputs.issue }} | |
| run: | | |
| set -uo pipefail | |
| work=$(mktemp -d); RULES=$work/rules.json; SCRIPT=$work/classify.jq | |
| # fetch instead of checking out -- no action means no lock entry to drift | |
| gh api "repos/$GITHUB_REPOSITORY/contents/.github/label-classifier.json?ref=$GITHUB_SHA" \ | |
| --jq '.content' 2>/dev/null | base64 -d > "$RULES" || true | |
| gh api "repos/$GITHUB_REPOSITORY/contents/.github/scripts/classify-issue.jq?ref=$GITHUB_SHA" \ | |
| --jq '.content' 2>/dev/null | base64 -d > "$SCRIPT" || true | |
| if [[ ! -s "$RULES" || ! -s "$SCRIPT" ]]; then | |
| echo "no classifier payload in this repo - nothing to do" | |
| exit 0 | |
| fi | |
| TITLE=$(gh issue view "$NUM" -R "$GITHUB_REPOSITORY" --json title --jq .title) || exit 0 | |
| echo "issue #$NUM: $TITLE" | |
| # Labels this repo actually defines. --limit 1000 is GitHub's real | |
| # per-repo ceiling; the default of 30 would silently hide most of the | |
| # taxonomy. Fetched BEFORE the label read below so that read stays as | |
| # close to the write as possible. | |
| mapfile -t DEFINED < <(gh label list -R "$GITHUB_REPOSITORY" --limit 1000 \ | |
| --json name --jq '.[].name' 2>/dev/null) | |
| # Labels already present; a human's work is never overridden. Read | |
| # HERE rather than earlier: every API call between this read and the | |
| # edit below widens a window in which someone could add a type label | |
| # and get a second one back from us. Only the local jq call is inside it. | |
| HAVE=$(gh issue view "$NUM" -R "$GITHUB_REPOSITORY" \ | |
| --json labels --jq '[.labels[].name]' 2>/dev/null) || HAVE='[]' | |
| [[ -n "$HAVE" ]] || HAVE='[]' | |
| echo "already has: $HAVE" | |
| mapfile -t ADD < <(jq -r --arg title "$TITLE" --argjson have "$HAVE" \ | |
| -f "$SCRIPT" "$RULES" 2>/dev/null) | |
| if [[ ${#ADD[@]} -eq 0 || -z "${ADD[0]:-}" ]]; then | |
| echo "no confident classification - leaving for a human" | |
| exit 0 | |
| fi | |
| apply=() | |
| for want in "${ADD[@]}"; do | |
| for def in "${DEFINED[@]}"; do | |
| if [[ "$want" == "$def" ]]; then apply+=("$want"); break; fi | |
| done | |
| done | |
| if [[ ${#apply[@]} -eq 0 ]]; then | |
| echo "classified as ${ADD[*]} but this repo defines none of them - run the label sync" | |
| exit 0 | |
| fi | |
| printf 'applying: %s\n' "${apply[*]}" | |
| # Build the arguments as an ARRAY. The previous form was an unquoted | |
| # command substitution, so the shell re-split its output on spaces and | |
| # a label name containing whitespace would arrive as several broken | |
| # arguments. No canonical label contains a space today, which is | |
| # exactly why this would have failed quietly the first time one did. | |
| # (Also clears actionlint SC2046.) | |
| edit_args=() | |
| for lab in "${apply[@]}"; do edit_args+=(--add-label "$lab"); done | |
| gh issue edit "$NUM" -R "$GITHUB_REPOSITORY" "${edit_args[@]}" \ | |
| || echo "label apply failed - not failing the run" | |
| exit 0 |