* Bump go tool golangci-lint to v2.13.1
The .golangci.yml goconst.ignore-tests setting was added in v2.12.0
(golangci/golangci-lint#6480). On the previously pinned v2.10.1,
config verify fails with "additional properties 'ignore-tests' not
allowed" and the setting is silently ignored at run time, so goconst
counts test-file literals toward min-occurrences.
* Apply gofmt and CutSuffix simplification
- gofmt -w internal/server/health_test.go
- Replace HasSuffix+TrimSuffix with CutSuffix in ParseSize
* Remove dead code and migrate tests off legacy Filesystem storage
Migrate the three test call sites of storage.NewFilesystem to
storage.OpenBucket("file://...") and drop the deprecated
StorageConfig.Path field from test configs, then delete code that
deadcode reports as unreachable from cmd/proxy:
- internal/storage/filesystem.go and its tests
- storage.HashingReader
- enrichment.Service.BulkCheckVulnerabilities and NormalizeLicense
- server.ActiveRequestsMiddleware (no-op body; the real tracking
is the inline r.Use at server.go:226)
- mirror.RegistrySource (unimplemented stub)
metrics.UpdateCircuitBreakerState and RecordCircuitBreakerTrip are
kept because #275 wires them.
Update the CONTRIBUTING.md storage section to reflect blob.go.
- ProxyCached now stores upstream Last-Modified in the cache and uses it
(along with ETag) for conditional request handling, returning 304 when
client validators match. Adds Content-Length to cached responses.
- Handlers calling FetchOrCacheMetadata (pypi, composer, pub, nuget) now
check for ErrUpstreamNotFound and return 404 instead of 502, matching
the existing npm and cargo behavior.
- Mirror jobs report live progress via a periodic callback while running,
so API polls return real counts instead of zeroed progress.
- Registry mirroring removed from CLI flags, API acceptance, README, and
docs since every enumerator was a stub returning "not yet implemented".
- Added tests for the conditional metadata path (ETag/If-None-Match,
Last-Modified/If-Modified-Since, 304 responses, header omission).
- Fix race where runJob could overwrite canceled state set by Cancel()
- Fix Debian ecosystem name inconsistency ("deb" -> "debian")
- Stream metadata responses when caching is disabled to avoid buffering
- Add metadata_cache table to initial schema strings for consistency
- Gate mirror API behind mirror_api config flag (disabled by default)
- Fix goconst lint in metadata_cache_test.go
- Wire job contexts to server shutdown context so jobs are canceled on
server stop instead of running indefinitely
- Defer context cancel in runJob so completed jobs don't leak contexts
- Cap error accumulation in progressTracker to 1000 entries to prevent
OOM on large mirror operations with many failures
- Add panic recovery in errgroup workers to prevent process crashes
- Use defer for db.Close() in runMirror CLI to ensure cleanup on all
error paths
Add a `proxy mirror` CLI command and `/api/mirror` API endpoints that
pre-populate the cache from various input sources: individual PURLs,
SBOM files (CycloneDX and SPDX), or full registry enumeration.
The mirror reuses the existing handler.Proxy.GetOrFetchArtifact()
pipeline so cached artifacts are identical to those fetched on demand.
A bounded worker pool controls download parallelism.
Metadata caching is opt-in via `cache_metadata: true` in config (or
PROXY_CACHE_METADATA=true). The mirror command always enables it. When
enabled, upstream metadata responses are stored for offline fallback
with ETag-based conditional revalidation.
New internal/mirror package with Source interface, PURLSource,
SBOMSource, RegistrySource, and async JobStore. New metadata_cache
database table for offline metadata serving.
