Each of the 4 stage workers (library walk, MBID backfill, cover
enrich, artist art enrich) gains a progressCb parameter that
receives a snapshot of the current running state per item processed.
The orchestrator stores the snapshot in a local var that the
publisher's marshal closure reads at flush time.
scanrun.go's 4 stage blocks are rewritten to construct one publisher
per stage, pass a Tick-firing closure to the worker as progressCb,
and call Flush() after the worker returns (routing any persist error
to captureErr — preserves today's diagnostic behavior).
The previous post-stage UpdateScanRun* calls are removed; the
publisher's Flush handles the final write. Cadence: every 500 items
OR every 1s, whichever fires first.
Outside-orchestrator callers (scanner_test.go, enricher_test.go)
pass nil for progressCb — no-op behavior preserved for tests that
don't need progress observability.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Sweep round 4: 5 more httptest handlers in provider_theaudiodb_test.go
where r is unused. Lint flagged 3 (lines 89/103/118); also fixing
2 more (TestConnection_SuccessOnEmptyAlbum, FailureOn401) that lint
would catch on the next run. The 4 handlers that DO use r.URL.Path
or r.Host are left as-is.
revive's unused-parameter rule flagged 7 test handler/method args:
- provider_test.go: fakeProvider.Configure(s) and
fakeAlbumProvider.FetchAlbumCover(ctx, mbid) — interface
conformance dummies that don't use their args.
- provider_mbcaa_test.go: 4 httptest handlers that ignore one or
both of (w, r).
- provider_theaudiodb_test.go: the disabled-provider negative
test's httptest handler.
All 7 renamed to _ per revive's convention.
Three endpoints for the admin Settings UI:
- GET /api/admin/cover-sources — lists registered providers with
current settings + capability badges + sources_version
- PATCH /api/admin/cover-sources/{provider_id} — updates enabled
and/or api_key; returns version_bumped: true only when the
enabled set changed
- POST /api/admin/cover-sources/{provider_id}/test — invokes
TestableProvider.TestConnection; returns ok:bool + duration_ms +
error string. Returns 200 in both success and failure cases (the
operation completed; the test result is data, not an error).
api_key is never echoed in GET — replaced with api_key_set: bool
to follow the standard credential-display convention. PATCH
api_key: "" clears; omitting the field leaves it unchanged. PATCH
on an unknown provider_id returns 404.
All under existing RequireAdmin middleware. Routes registered
alongside the library/coverage endpoint in the /api/admin/ tree.
handlers struct gains a coverSettings *coverart.SettingsService
field; server.New + cmd/minstrel/main.go plumb the existing
coverSettings instance through.
coverart.ResetRegistryForTests() exported wrapper added so api
package tests can reset the registry without importing internals.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Parallels EnrichAlbum but with no sidecar layer (artists have no
per-artist directory in a music library). Iterates
EnabledArtistProviders, writes thumb.jpg + fanart.jpg to
<data_dir>/artist-art/<artist_id>/, stamps artist_art_source +
artist_art_sources_version atomically.
Atomicity: provider returns whichever images it has — partial
success (thumb-only or fanart-only) is persisted with whichever
paths landed, source still stamped. ErrNotFound from every enabled
provider settles the row to 'none' with the current version stamp.
Any ErrTransient leaves the row NULL for next-pass retry.
CleanupArtistArt removes <data_dir>/artist-art/<artist_id>/ on
artist delete; idempotent on missing dir. Hooked into the artist-
delete cascade in tracks/service.go after the transaction commits;
non-fatal on failure (logs but doesn't fail the delete).
EnrichArtistBatch drains rows from ListArtistsMissingArt; the
orchestrator's 4th stage (added in T10) calls this. Tests cover
the eligibility table, atomicity (thumb-only / fanart-only),
all-404-settles, ErrTransient-leaves-NULL, filesystem layout, and
CleanupArtistArt idempotency.
tracks.Service gains a dataDir field; tracks.NewService takes it
as a new parameter. All three call sites updated (server/server.go,
api/auth_test.go, api/admin_tracks_test.go). The dataDir flows from
cfg.Storage.DataDir → server.New → s.DataDir → tracks.NewService
without any change to cmd/minstrel/main.go.
Rewires EnrichAlbum to iterate EnabledAlbumProviders from the
SettingsService instead of a single hardcoded MBCAA fetcher. Sidecar
layer is unchanged (always tried first). Per-row eligibility check
honors cover_art_sources_version: terminal 'found' values skip;
'none' flips to NULL via ClearAlbumCoverNone and proceeds (the DB-
level ListAlbumsMissingCover query guards the version check for batch
callers; RetryAlbum clears via ClearAlbumCover first); NULL is eligible.
The provider chain uses an inline allWere404 accumulator to settle
the row to 'none' only when every provider returned ErrNotFound.
Any provider returning ErrTransient leaves the row NULL for next-
pass retry — even if other providers returned ErrNotFound — since
the transient call's MBID might succeed on a future attempt.
Boot wiring (cmd/minstrel/main.go) replaces the
NewFetcher+NewEnricher(fetcher, mbcaaOn) shape with
NewMBCAAProviderFromConfig (swaps in production User-Agent on the
registered provider) + NewSettingsService + NewEnricher(settings).
The old cfg.Library.CoverArtFromMBCAA flag is no-op'd; DB-backed
settings replace it. Field stays in the config struct for backward
compat with deployed config files.
Consolidates fetcher.go's HTTP logic into provider_mbcaa.go (no more
wrapper indirection): mbcaaProvider now holds cfg/mu/lastCall/client
directly. Deletes fetcher.go and fetcher_test.go. ErrNotFound and
ErrTransient move into provider.go alongside the other sentinels.
Updates admin_covers_test.go and provider_mbcaa_test.go to the new
constructor shapes. Adds multi-provider-chain, transient-leaves-null,
and stale-none-flips-and-retries test cases in enricher_test.go.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Reconciles the compile-time provider registry with the
cover_art_provider_settings table at boot, and on every admin
update. Calls Configure() on each provider with the row data so
runtime config (enabled, api_key) propagates immediately.
Owns the cover_art_sources_meta.current_version stamp.
UpdateProvider returns versionBumped=true only when the change
altered the *enabled set* of providers — key rotations don't bump
version (the recheck trigger is for "we have a new source to ask,"
not config rotations).
Capability filtering: EnabledAlbumProviders / EnabledArtistProviders
return only registered providers that (a) are enabled per DB and
(b) implement the requested capability interface. Snapshots —
callers don't mutate.
ListProviderInfo builds the wire-shaped slice the admin GET handler
returns. APIKeySet bool replaces echoing the key (credential never
leaves the server).
TestProvider dispatches to TestableProvider.TestConnection on the
named provider, ErrNotTestable if the provider doesn't implement
the capability, ErrProviderNotFound if not registered.
UpdateProviderSettingsParams uses the sqlc-generated field names:
Enabled bool (not *bool — the COALESCE is handled by passing the
cached current value when patch.Enabled is nil), Column3 bool
(apiKeyChanged flag), ApiKey *string (the api_key value — sqlc
named this from the column, not Column4 as the task spec assumed).
Tests gated on MINSTREL_TEST_DATABASE_URL: boot-inserts-defaults,
flip-enabled-bumps-version, key-only-doesn't-bump, clear-key,
TestProvider routing for testable / non-testable / missing,
ListProviderInfo capability badges. Reuses newPool / discardLogger
and fakeProvider / fakeAlbumProvider from enricher_test.go and
provider_test.go (same package).
New album-cover and artist-art source implementing
AlbumCoverProvider, ArtistArtProvider, and TestableProvider. Hits
the documented /album-mb.php and /artist-mb.php JSON endpoints by
MBID, then GETs the returned image URLs (CDN, key-less). 2 req/sec
rate limit per the upstream's documented free/test-key tier;
mutex+lastCall serialises ALL HTTP calls regardless of method so
JSON metadata fetches and image GETs share the same budget.
429 / 5xx triggers exponential backoff with jitter (250ms × 2^attempt
± 20%) up to 3 retries before surfacing ErrTransient. 401 / 403
surface as ErrTransient (auth issues are config errors, not "this
album has no art" — the row stays NULL across passes so the operator
sees pending count not decreasing as the diagnostic signal).
Artist art is atomic at the JSON metadata step (one round-trip
yields both URLs); the two image GETs are independent — partial
success returns whatever bytes landed and ErrNotFound only if
neither URL is present in the response.
Configure() falls back to the documented public test key (2) when
the operator's APIKey is empty, per the no-coercive-settings
principle. Test connection hits a stable popular release MBID
(Pink Floyd, "The Dark Side of the Moon").
theAudioDBBaseURL is a var (not const) so tests can override it.
Adapts the existing Fetcher-based MBCAA client to the new Provider
abstraction. mbcaaProvider embeds *Fetcher and implements
Provider + AlbumCoverProvider + TestableProvider. init() registers a
default-config instance; NewMBCAAProviderFromConfig swaps in
production config (User-Agent, MinPeriod) at boot.
Wrapper approach (rather than reimplementing the HTTP logic) keeps
the package compiling during the T4–T8 window: enricher.go and
main.go still reference the legacy Fetcher type / NewFetcher
constructor / Fetch method, all of which remain unchanged in
fetcher.go. A-T8 will consolidate the HTTP logic into this file and
delete fetcher.go after the enricher rewrite removes the last
legacy call sites.
TestConnection hits a hardcoded popular release MBID (Beatles
"Abbey Road" UK release) and treats both 200 and 404 as "connection
works" — MBCAA needs no auth, so only 5xx / network failures
surface. Tests cover ID/DisplayName/Capability metadata, success
path, 404→ErrNotFound, disabled-returns-ErrNotFound, Configure
toggle, TestConnection variants, and NewMBCAAProviderFromConfig
swap.
Defines the abstraction every cover-art source will implement:
- Provider — base interface (ID, DisplayName, RequiresAPIKey,
DefaultEnabled, Configure).
- AlbumCoverProvider — opt-in capability for fetching album covers
by MBID.
- ArtistArtProvider — opt-in capability for fetching artist thumb +
fanart atomically by MBID.
- TestableProvider — opt-in capability for the admin Test-Connection
button.
Sentinel ErrNotTestable / ErrProviderNotFound. ErrNotFound and
ErrTransient stay in fetcher.go for now; they move into provider.go
in the next commit when fetcher.go is deleted as part of the MBCAA
refactor.
Compile-time registry: providers register from init() in their own
file. Duplicate IDs panic at startup (compiled-in registration is a
build-time bug, not a runtime concern).
Tests cover: Register adds, duplicate panics, ProviderByID success
+ ErrProviderNotFound, capability-interface filtering via Go type
assertion.
Adds internal/library/scanrun.go with RunScan, which creates a scan_runs
row and sequences file-walk → MBID backfill → cover enrich, persisting
per-stage tallies as jsonb. Extends coverart.EnrichBatch to return
(processed, succeeded, failed, err) so the orchestrator can classify
outcomes. Replaces main.go's two separate boot goroutines with a single
RunScan call; passes nil scanner in the no-startup-scan branch.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- gofmt -s on system.go, system_cron.go, api.go
- rename unused r → _ in 3 fetcher_test.go HTTP handlers
- TrackRow +queue test uses /add .* to queue/i (track-aware aria-label from #377)
- /library/artists page test mocks likes + tanstack-query (ArtistCard now embeds LikeButton)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen