Add indexer cache with River queue for scheduled refresh

internal/indexer/service.go

@@ -3,6 +3,8 @@ package indexer
 import (
 	"fmt"
 
+	"github.com/jackc/pgx/v5"
+	"github.com/riverqueue/river"
 	"github.com/rs/zerolog/log"
 
 	pb "homelab.lan/music-agregator/gen/music_agregator/indexer/v1"
@@ -13,20 +15,28 @@ type IndexerService struct {
 	indexer Indexer
 }
 
-func NewIndexerService(cfg config.Config) (*IndexerService, error) {
+func NewIndexerService(cfg config.Config, riverClient *river.Client[pgx.Tx]) (*IndexerService, error) {
+	var idx Indexer
+
 	switch cfg.Indexer.Type {
 	case config.IndexerTypeJackett:
-		indexer := NewIndexer(cfg)
-		return &IndexerService{indexer: indexer}, nil
+		idx = NewIndexer(cfg)
 	default:
-		return nil, fmt.Errorf("Unable to create the indexer for type: %v", cfg.Indexer.Type)
+		return nil, fmt.Errorf("unable to create the indexer for type: %v", cfg.Indexer.Type)
 	}
+
+	if cfg.Indexer.Cache.Enabled && riverClient != nil {
+		cache := NewIndexerCache()
+		idx = NewCachedIndexer(idx, cache, riverClient, cfg.Indexer.Cache)
+		log.Info().Dur("ttl", cfg.Indexer.Cache.TTL).Dur("refresh", cfg.Indexer.Cache.RefreshInterval).Msg("indexer cache enabled")
+	}
+
+	return &IndexerService{indexer: idx}, nil
 }
 
-func (service *IndexerService) Search(req *pb.SearchRequest) (*pb.SearchResponse, error) {
-	log.Trace().Str("query", req.GetQuery()).Msg("fetching results from indexer")
+func (service *IndexerService) Search(query string, limit int32, indexer string) (*pb.SearchResponse, error) {
 
-	searchResult, err := service.indexer.Search(req.GetQuery(), req.GetLimit(), req.GetTracker())
+	searchResult, err := service.indexer.Search(query, limit, indexer)
 	if err != nil {
 		log.Error().Err(err).Msg("failed to search in indexer")
 		return nil, err