mirror of
https://github.com/anthropics/claude-plugins-official.git
synced 2026-05-19 12:42:40 +00:00
b7c0654137
* Cache scan verdicts and drop policy-failing entries from bump PRs Three changes that together let the nightly bump clear any backlog in a single run without blocking on a single bad upstream or re-burning Claude time on already-scanned SHAs: - bump-plugin-shas.yml: raise max-bumps default 20 -> 130 (above the external entry count, so a single run can clear a full backlog) and add an explicit 60-min job timeout. The cap was the only thing bounding the blast radius of a single policy failure; the changes below take over that role so the cap can be lifted. - scan-plugins.yml: add a verdict cache keyed on (plugin, sha, policy hash). The bump action force-resets bump/plugin-shas every night, which makes the same SHAs reappear in the diff on consecutive nights — without the cache the scan would re-burn ~90s of Claude time per entry per night. Cached verdicts (pass and fail) are served from disk; only uncached SHAs are scanned. The job still fails on cached failures so the required check stays honest. - revert-failed-bumps.yml (new): after a Scan Plugins workflow_run on bump/plugin-shas concludes with a failure, drop just the failing entries' source.sha back to main's pin via a follow-up signed commit and re-dispatch the scan. The re-dispatch finds only cached-pass entries and goes green in seconds. Bounded at 3 passes/night, restricted to SHA-only diffs, and aborts if the bump branch was tampered with. * Harden bump cache and revert workflows after review - revert-failed-bumps: replace the time-based revert budget (anchored on the PR head, which a revert commit immediately replaces — never accumulating past 1) with a commit count: every nightly bump force- resets to one commit and every revert pass adds exactly one, so commits > MAX+1 is the budget without date math, pagination, or exposure to comment spoofing. - revert-failed-bumps: filter the bump PR by head owner so a fork PR with a branch named bump/plugin-shas can't be selected. - revert-failed-bumps: continue-on-error on the artifact download so a scan that died before uploading (infra error) doesn't fail the revert job — the missing-file guard downstream handles it. - scan-plugins: add a per-ref concurrency group so concurrent scans don't lose one another's cache writes; key the cache on run_attempt so a re-run can save its own verdicts. - scan-plugins: store the full source object in the cache and require source equality on lookup, so a repo/path change at the same SHA misses the cache instead of getting a stale verdict. - scan-plugins / revert-failed-bumps: strip markdown control chars, wrap model-generated text in code spans (neutralizes auto-linked URLs), and redact key-shaped tokens before they reach the step summary, artifact, cache, or PR comment.
381 lines
18 KiB
YAML
381 lines
18 KiB
YAML
name: Scan Plugins
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# Claude policy scan of changed external marketplace entries.
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#
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# `scan` is a required status check on main. A path-filtered workflow never
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# reports a check run when its paths don't match, which would leave unrelated
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# PRs blocked forever — so this workflow runs on every PR and skips the heavy
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# scan setup at the step level when nothing scan-relevant changed. The check
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# always reports.
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#
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# Verdict cache: each (plugin, sha) pair is scanned at most once. The bump
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# workflow force-resets bump/plugin-shas every night, which makes the same
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# SHAs reappear in the diff on consecutive nights — without a cache, the
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# scan would re-burn ~90s of Claude time per entry per night. The cache is
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# keyed on the policy hash so a prompt or schema change invalidates all
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# verdicts and triggers a clean re-scan.
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#
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# Failure handling: a cached `passes:false` verdict still fails the job. The
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# Revert Failed Bumps workflow (revert-failed-bumps.yml) reacts to that by
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# dropping the failing entries from the bump PR, so one bad upstream can't
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# block the rest. After the revert, the re-dispatched scan finds only
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# cached-pass entries and goes green in seconds.
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on:
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pull_request:
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workflow_dispatch:
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inputs:
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scan_all:
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description: Scan every external entry (full re-review). Slow.
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type: boolean
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default: false
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permissions:
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contents: read
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# Serialize scans per ref so concurrent runs (a re-dispatch racing the
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# original, or a manual dispatch) don't both restore the same cache, scan
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# overlapping sets, and lose one another's verdicts on save.
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concurrency:
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group: scan-plugins-${{ github.event.pull_request.number || github.ref }}
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cancel-in-progress: false
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env:
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MARKETPLACE: .claude-plugin/marketplace.json
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CACHE_DIR: ${{ github.workspace }}/.scan-cache
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CACHE_TTL_DAYS: '30'
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jobs:
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scan:
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runs-on: ubuntu-latest
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timeout-minutes: 360
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steps:
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- uses: actions/checkout@v4
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with:
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fetch-depth: 0
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# Same paths the workflow-level filter used to gate on. workflow_dispatch
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# always runs the scan (no PR diff to inspect).
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- name: Check for scan-relevant changes
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id: changes
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env:
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EVENT_NAME: ${{ github.event_name }}
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BASE_SHA: ${{ github.event.pull_request.base.sha }}
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run: |
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set -euo pipefail
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if [[ "$EVENT_NAME" == "workflow_dispatch" ]]; then
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echo "relevant=true" >> "$GITHUB_OUTPUT"
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echo "base_ref=origin/main" >> "$GITHUB_OUTPUT"
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exit 0
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fi
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echo "base_ref=$BASE_SHA" >> "$GITHUB_OUTPUT"
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if git diff --quiet "$BASE_SHA" HEAD -- "$MARKETPLACE" .github/policy/; then
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echo "relevant=false" >> "$GITHUB_OUTPUT"
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echo "::notice::No changes to marketplace.json or policy/ — skipping policy scan."
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else
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echo "relevant=true" >> "$GITHUB_OUTPUT"
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fi
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# The shared action no-ops gracefully when ANTHROPIC_API_KEY is unset
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# (sensible default for community repos). Here `scan` is a required
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# check, so a silent no-op would make it a rubber stamp — fail closed.
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- name: Require ANTHROPIC_API_KEY when a scan is needed
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if: steps.changes.outputs.relevant == 'true'
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env:
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API_KEY_SET: ${{ secrets.ANTHROPIC_API_KEY != '' }}
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run: |
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if [[ "$API_KEY_SET" != "true" ]]; then
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echo "::error::ANTHROPIC_API_KEY is not configured; refusing to skip a required policy scan."
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exit 1
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fi
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# Verdict cache, keyed on the policy content hash. A prompt change
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# invalidates every cached verdict — that is intentional. The save key
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# includes run_id so each run writes a fresh cache; restore-keys picks
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# the most recent one. Verdicts older than CACHE_TTL_DAYS are pruned on
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# restore to bound cache size as the marketplace grows.
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- name: Restore verdict cache
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if: steps.changes.outputs.relevant == 'true'
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id: cache-restore
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uses: actions/cache/restore@v4
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with:
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path: .scan-cache
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# run_attempt so a re-run can save its own verdicts (cache keys are
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# immutable; without it a re-run would silently fail to save).
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key: scan-verdicts-${{ hashFiles('.github/policy/**') }}-${{ github.run_id }}-${{ github.run_attempt }}
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restore-keys: |
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scan-verdicts-${{ hashFiles('.github/policy/**') }}-
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# Split the diff into cached (skip) and uncached (scan) entries. The
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# cache key is "<name>@<sha>" — a SHA is immutable, so a verdict for a
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# given (plugin, sha) is permanent under a fixed policy.
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- name: Filter scan targets against cache
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if: steps.changes.outputs.relevant == 'true'
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id: filter
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env:
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BASE_REF: ${{ steps.changes.outputs.base_ref }}
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SCAN_ALL: ${{ inputs.scan_all || 'false' }}
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TTL_DAYS: ${{ env.CACHE_TTL_DAYS }}
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run: |
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set -euo pipefail
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mkdir -p "$CACHE_DIR"
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# Initialize / prune the verdict map.
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if [[ -f "$CACHE_DIR/verdicts.json" ]] && jq -e 'type == "object"' "$CACHE_DIR/verdicts.json" >/dev/null 2>&1; then
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# Drop entries older than TTL. Verdicts are immutable per (plugin, sha)
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# but pruning keeps the cache from accumulating forever.
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cutoff="$(date -u -d "-${TTL_DAYS} days" +%Y-%m-%dT%H:%M:%SZ)"
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jq --arg cutoff "$cutoff" \
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'with_entries(select(.value.scanned_at >= $cutoff))' \
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"$CACHE_DIR/verdicts.json" > "$CACHE_DIR/verdicts.json.tmp"
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mv "$CACHE_DIR/verdicts.json.tmp" "$CACHE_DIR/verdicts.json"
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else
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echo '{}' > "$CACHE_DIR/verdicts.json"
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fi
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# Build the change set: entries in HEAD whose object differs from base.
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# scan_all overrides to "every external entry" (full re-review).
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if [[ "$SCAN_ALL" == "true" ]]; then
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jq -c '[.plugins[] | select(.source | type == "object")]' "$MARKETPLACE" \
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> "$CACHE_DIR/changed.json"
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else
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if git cat-file -e "${BASE_REF}:${MARKETPLACE}" 2>/dev/null; then
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git show "${BASE_REF}:${MARKETPLACE}" > "$CACHE_DIR/base.json"
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else
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echo '{"plugins":[]}' > "$CACHE_DIR/base.json"
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fi
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jq -c -s \
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'(.[0].plugins | map({(.name): .}) | add // {}) as $b
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| [.[1].plugins[]
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| select(.source | type == "object")
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| select(($b[.name] // null) != .)]' \
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"$CACHE_DIR/base.json" "$MARKETPLACE" > "$CACHE_DIR/changed.json"
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fi
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changed_count="$(jq 'length' "$CACHE_DIR/changed.json")"
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# Split changed entries into cached vs uncached. A hit requires the
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# *whole* source object (repo, sha, path, ref) to match the cached
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# entry, not just name@sha — a repo migration or path change with the
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# same SHA is different scan content and must miss the cache.
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jq -c -s \
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'.[0] as $cache
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| (.[1] | map(. + {key: (.name + "@" + (.source.sha // "")) })) as $entries
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| {
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to_scan: [$entries[] | select(($cache[.key].source // null) != .source)],
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cached: [$entries[] | select(($cache[.key].source // null) == .source)
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| . + {verdict: $cache[.key]}]
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}' \
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"$CACHE_DIR/verdicts.json" "$CACHE_DIR/changed.json" > "$CACHE_DIR/split.json"
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jq -c '.to_scan' "$CACHE_DIR/split.json" > "$CACHE_DIR/to-scan.json"
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jq -c '.cached' "$CACHE_DIR/split.json" > "$CACHE_DIR/cached.json"
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to_scan_count="$(jq 'length' "$CACHE_DIR/to-scan.json")"
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cached_count="$(jq 'length' "$CACHE_DIR/cached.json")"
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cached_fail_count="$(jq '[.[] | select(.verdict.passes == false)] | length' "$CACHE_DIR/cached.json")"
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# Build a filtered marketplace containing only the uncached entries.
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# Passing this as the action's marketplace-path means the action's own
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# base diff (which can't resolve a path outside git) falls back to an
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# empty base and scans everything in the file — which is exactly the
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# to-scan set. Annotations point to the temp file rather than the real
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# marketplace, but the per-entry verdicts still land in the artifact
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# and the step summary.
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jq -c '{plugins: .}' "$CACHE_DIR/to-scan.json" > "$CACHE_DIR/scan-targets.json"
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{
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echo "changed=$changed_count"
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echo "to_scan=$to_scan_count"
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echo "cached=$cached_count"
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echo "cached_failures=$cached_fail_count"
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} >> "$GITHUB_OUTPUT"
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echo "::notice::$changed_count changed entrie(s): $cached_count cached ($cached_fail_count failing), $to_scan_count to scan."
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- name: Scan uncached entries
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if: steps.changes.outputs.relevant == 'true' && steps.filter.outputs.to_scan != '0'
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id: scan
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# Capture the action's per-entry outputs even when it exits nonzero.
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# The verdict (cached + fresh) is what gates the job, not the action's
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# exit code, and the revert workflow needs the artifact even on failure.
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continue-on-error: true
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uses: anthropics/claude-plugins-community/.github/actions/scan-plugins@b277757588871fe55b2620de8c6dfda470e2e9d8
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with:
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anthropic-api-key: ${{ secrets.ANTHROPIC_API_KEY }}
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marketplace-path: .scan-cache/scan-targets.json
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policy-prompt: .github/policy/prompt.md
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fail-on-findings: "true"
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claude-cli-version: latest
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# Merge fresh verdicts into the cache and assemble this run's full
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# verdict set (cached + fresh) for downstream consumers. Runs even when
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# the scan step failed so that fail verdicts are also cached — that is
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# what lets the revert workflow drop them and what stops the same
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# failing SHA from being re-scanned every night.
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- name: Merge verdicts and assemble run report
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if: steps.changes.outputs.relevant == 'true'
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id: report
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# The action's `scanned` output travels here via an env var, which is
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# subject to the OS argv/envp size limit (~128 KiB on Linux). At ~300
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# bytes/entry that is ~400 entries — an order of magnitude above the
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# cold-start case, and steady state with the cache is ~10/night. If
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# the limit is ever hit the runner fails the step before the script
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# runs ("argument list too long") — the right response is to clear
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# the cache key and lower max-bumps temporarily. Documented here so
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# nobody has to rediscover it.
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env:
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SCANNED_JSON: ${{ steps.scan.outputs.scanned || '[]' }}
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run: |
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set -euo pipefail
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mkdir -p "$CACHE_DIR"
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[[ -f "$CACHE_DIR/cached.json" ]] || echo '[]' > "$CACHE_DIR/cached.json"
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[[ -f "$CACHE_DIR/changed.json" ]] || echo '[]' > "$CACHE_DIR/changed.json"
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# Defensive: a partial or unparseable action output must not poison
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# the cache. Treat it as "scanned nothing".
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printf '%s' "$SCANNED_JSON" > "$CACHE_DIR/scanned-raw.json"
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if ! jq -e 'type == "array"' "$CACHE_DIR/scanned-raw.json" >/dev/null 2>&1; then
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echo "::warning::scan action output is not a valid JSON array — treating as empty."
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echo '[]' > "$CACHE_DIR/scanned-raw.json"
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fi
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# Defense in depth: the scan action runs Claude with Read access over
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# a cloned external repo and ANTHROPIC_API_KEY in its process env. A
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# successful prompt injection could coerce the model to put key
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# material into `summary`/`violations`. The action's own step summary
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# already carries that risk; this workflow adds an artifact and a PR
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# comment, both public sinks. Scrub any key-shaped token here so it
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# never reaches the cache, artifact, or comment.
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jq -c '(.. | strings) |= gsub("sk-ant-[A-Za-z0-9_-]{8,}"; "[REDACTED]")' \
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"$CACHE_DIR/scanned-raw.json" > "$CACHE_DIR/scanned-raw.json.tmp"
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mv "$CACHE_DIR/scanned-raw.json.tmp" "$CACHE_DIR/scanned-raw.json"
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now="$(date -u +%Y-%m-%dT%H:%M:%SZ)"
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# The action's `scanned` output has no SHA or source — join it with
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# the change set by name to recover both for the cache key + the
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# source-equality lookup guard.
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jq -c -s --arg now "$now" \
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'.[0] as $changed
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| (.[1] // []) as $scanned
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| ($changed | map({(.name): .source}) | add // {}) as $srcs
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| [$scanned[]
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| . + {source: ($srcs[.name] // null), sha: ($srcs[.name].sha // ""), scanned_at: $now}]' \
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"$CACHE_DIR/changed.json" "$CACHE_DIR/scanned-raw.json" \
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> "$CACHE_DIR/fresh.json"
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# Merge fresh verdicts into the cache, keyed by name@sha. The
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# full source object is stored so a future repo/path change with the
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# same SHA fails the lookup guard. summary/violations are model
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# output — truncate to bound cache size (the artifact carries the
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# full text for the run that produced it).
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jq -c -s \
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'.[0] + ([.[1][] | select(.sha != "") | {(.name + "@" + .sha): {
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source: .source,
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passes: .passes,
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summary: ((.summary // "") | .[0:300]),
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violations: ((.violations // "") | .[0:500]),
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scanned_at: .scanned_at
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}}] | add // {})' \
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"$CACHE_DIR/verdicts.json" "$CACHE_DIR/fresh.json" \
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> "$CACHE_DIR/verdicts.json.tmp"
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mv "$CACHE_DIR/verdicts.json.tmp" "$CACHE_DIR/verdicts.json"
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# The full per-entry verdict for THIS run's diff: cached verdicts
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# plus freshly-scanned verdicts. The revert workflow consumes the
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# `failed` list to know exactly which SHAs to drop.
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jq -c -s \
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'(.[0] | map({name, sha: .source.sha, passes: .verdict.passes,
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summary: (.verdict.summary // ""),
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violations: (.verdict.violations // ""),
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source: "cache"}))
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+ (.[1] | map({name, sha, passes,
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summary: (.summary // ""),
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violations: (.violations // ""),
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source: "scan"}))' \
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"$CACHE_DIR/cached.json" "$CACHE_DIR/fresh.json" \
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> "$CACHE_DIR/run-verdicts.json"
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jq -c '[.[] | select(.passes == false) | .name]' "$CACHE_DIR/run-verdicts.json" \
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> "$CACHE_DIR/run-failed.json"
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fail_count="$(jq 'length' "$CACHE_DIR/run-failed.json")"
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total="$(jq 'length' "$CACHE_DIR/run-verdicts.json")"
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{
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echo "failed_count=$fail_count"
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echo "total=$total"
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} >> "$GITHUB_OUTPUT"
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# `summary` and `violations` are model-generated text shaped by a
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# cloned external repo. Strip markdown control characters AND wrap
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# in code spans before they hit a publicly-rendered sink — code
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# spans neutralize auto-linked bare URLs that a prompt-injected
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# upstream could smuggle in. Stripping backticks first stops a
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# breakout from the code span.
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{
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echo "## Policy scan (with verdict cache)"
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echo
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echo "Changed entries: ${total} · cached: $(jq 'length' "$CACHE_DIR/cached.json") · scanned fresh: $(jq 'length' "$CACHE_DIR/fresh.json") · failures: ${fail_count}"
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echo
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if [[ "$total" -gt 0 ]]; then
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echo "| Plugin | SHA | Passes | Source | Summary |"
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echo "|---|---|---|---|---|"
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jq -r 'def neutralize: gsub("[|\n\r\\[\\]<>`]"; " ");
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.[] | "| \(.name) | `\(.sha[0:8])` | \(if .passes then "✅" else "❌" end) | \(.source) | `\(.summary | neutralize | .[0:120])` |"' \
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"$CACHE_DIR/run-verdicts.json"
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fi
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if [[ "$fail_count" -gt 0 ]]; then
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echo
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echo "### Violations"
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jq -r 'def neutralize: gsub("[|\n\r\\[\\]<>`]"; " ");
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.[] | select(.passes == false) | "- **\(.name)** — `\(.violations | neutralize | .[0:500])`"' "$CACHE_DIR/run-verdicts.json"
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fi
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} >> "$GITHUB_STEP_SUMMARY"
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# Used by revert-failed-bumps.yml to know which entries to drop. Always
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# uploaded when relevant so the revert workflow can distinguish "scan
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# found policy failures" from "scan never ran" (infra error → no revert).
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- name: Upload scan verdicts artifact
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if: steps.changes.outputs.relevant == 'true'
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uses: actions/upload-artifact@v4
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with:
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name: scan-verdicts
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path: |
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.scan-cache/run-verdicts.json
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.scan-cache/run-failed.json
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retention-days: 7
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# Save even when the scan failed — fail verdicts are what stop us from
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# re-burning Claude time on a known-bad SHA every night.
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- name: Save verdict cache
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if: always() && steps.changes.outputs.relevant == 'true'
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uses: actions/cache/save@v4
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with:
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path: .scan-cache
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key: scan-verdicts-${{ hashFiles('.github/policy/**') }}-${{ github.run_id }}-${{ github.run_attempt }}
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# Required-check gate. Fails on either fresh or cached policy failures —
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# a known-bad SHA must keep failing until it is reverted or upstream
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# fixes it (a new SHA is a new cache key and gets a fresh scan).
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- name: Gate on policy verdict
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if: steps.changes.outputs.relevant == 'true'
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env:
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FAILED: ${{ steps.report.outputs.failed_count || '0' }}
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SCAN_OUTCOME: ${{ steps.scan.outcome }}
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run: |
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set -euo pipefail
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if [[ "$FAILED" != "0" ]]; then
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echo "::error::$FAILED entrie(s) fail policy. See the run summary for verdicts."
|
|
exit 1
|
|
fi
|
|
# The action can also fail without a policy verdict (clone error,
|
|
# API error, schema mismatch). With zero parsed failures and a
|
|
# nonzero exit, that is an infra error — fail loudly so the revert
|
|
# workflow does NOT misread it as "everything passed".
|
|
if [[ "$SCAN_OUTCOME" == "failure" ]]; then
|
|
echo "::error::Scan step failed without a parseable policy verdict (likely an infra error)."
|
|
exit 1
|
|
fi
|