Persist metadata to DB, poll download worker, metadata service layer

internal/indexer/cache_worker.go

@@ -27,6 +27,12 @@ type CacheRefreshWorker struct {
 
 func (w *CacheRefreshWorker) Work(ctx context.Context, job *river.Job[CacheRefreshArgs]) error {
 	args := job.Args
+
+	if w.Cache == nil || w.Indexer == nil {
+		log.Trace().Str("key", args.Key).Msg("cache disabled, discarding refresh job")
+		return nil
+	}
+
 	log.Trace().Str("key", args.Key).Int64("job_id", job.ID).Time("ttl_expires", args.TTLExpires).Msg("cache refresh worker started")
 
 	if time.Now().After(args.TTLExpires) {

internal/indexer/server.go

@@ -17,8 +17,8 @@ type IndexerServer struct {
 	pb.UnimplementedIndexerServiceServer
 }
 
-func NewIndexerServer(cfg config.Config, riverClient *river.Client[pgx.Tx]) (*IndexerServer, error) {
-	service, err := NewIndexerService(cfg, riverClient)
+func NewIndexerServer(cfg config.Config, riverClient *river.Client[pgx.Tx], cacheWorker *CacheRefreshWorker) (*IndexerServer, error) {
+	service, err := NewIndexerService(cfg, riverClient, cacheWorker)
 	if err != nil {
 		log.Err(err).Msg("failed to initialize IndexerService")
 		return nil, err

internal/indexer/service.go

@@ -15,7 +15,7 @@ type IndexerService struct {
 	indexer Indexer
 }
 
-func NewIndexerService(cfg config.Config, riverClient *river.Client[pgx.Tx]) (*IndexerService, error) {
+func NewIndexerService(cfg config.Config, riverClient *river.Client[pgx.Tx], cacheWorker *CacheRefreshWorker) (*IndexerService, error) {
 	var idx Indexer
 
 	switch cfg.Indexer.Type {
@@ -28,6 +28,12 @@ func NewIndexerService(cfg config.Config, riverClient *river.Client[pgx.Tx]) (*I
 	if cfg.Indexer.Cache.Enabled && riverClient != nil {
 		cache := NewIndexerCache()
 		idx = NewCachedIndexer(idx, cache, riverClient, cfg.Indexer.Cache)
+
+		if cacheWorker != nil {
+			cacheWorker.Cache = cache
+			cacheWorker.Indexer = idx
+		}
+
 		log.Info().Dur("ttl", cfg.Indexer.Cache.TTL).Dur("refresh", cfg.Indexer.Cache.RefreshInterval).Msg("indexer cache enabled")
 	}