feat(feeds): optimize existing cache items check (#2078)

* feat(feeds): optimize existing items cache check

* feat(feeds): remove ttl from repo method ExistingItems

* feat(feeds): add db integration test for ExistingItems

* feat(feeds): improve release and filter processing

* feat(feeds): fix failing test

internal/database/feed_cache.go

@@ -157,6 +157,48 @@ func (r *FeedCacheRepo) Exists(feedId int, key string) (bool, error) {
 	return exists, nil
 }
 
+// ExistingItems checks multiple keys in the cache for a given feed ID
+// and returns a map of existing keys to their values
+func (r *FeedCacheRepo) ExistingItems(ctx context.Context, feedId int, keys []string) (map[string]bool, error) {
+	if len(keys) == 0 {
+		return make(map[string]bool), nil
+	}
+
+	// Build a query that returns all keys that exist in the cache
+	queryBuilder := r.db.squirrel.
+		Select("key").
+		From("feed_cache").
+		Where(sq.Eq{"feed_id": feedId}).
+		Where(sq.Eq{"key": keys})
+
+	query, args, err := queryBuilder.ToSql()
+	if err != nil {
+		return nil, errors.Wrap(err, "error building query")
+	}
+
+	rows, err := r.db.handler.QueryContext(ctx, query, args...)
+	if err != nil {
+		return nil, errors.Wrap(err, "error executing query")
+	}
+	defer rows.Close()
+
+	result := make(map[string]bool)
+
+	for rows.Next() {
+		var key string
+		if err := rows.Scan(&key); err != nil {
+			return nil, errors.Wrap(err, "error scanning row")
+		}
+		result[key] = true
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, errors.Wrap(err, "row error")
+	}
+
+	return result, nil
+}
+
 func (r *FeedCacheRepo) Put(feedId int, key string, val []byte, ttl time.Time) error {
 	queryBuilder := r.db.squirrel.
 		Insert("feed_cache").

internal/database/feed_cache_test.go

@@ -155,6 +155,107 @@ func TestFeedCacheRepo_Exists(t *testing.T) {
 	}
 }
 
+func TestFeedCacheRepo_ExistingItems(t *testing.T) {
+	for dbType, db := range testDBs {
+
+		log := setupLoggerForTest()
+		repo := NewFeedCacheRepo(log, db)
+		feedRepo := NewFeedRepo(log, db)
+		indexerRepo := NewIndexerRepo(log, db)
+		mockData := getMockFeed()
+		indexerMockData := getMockIndexer()
+
+		t.Run(fmt.Sprintf("ExistingItems_SingleItem_Multi_Keys [%s]", dbType), func(t *testing.T) {
+			// Setup
+			indexer, err := indexerRepo.Store(t.Context(), indexerMockData)
+			assert.NoError(t, err)
+			mockData.IndexerID = int(indexer.ID)
+
+			err = feedRepo.Store(t.Context(), mockData)
+			assert.NoError(t, err)
+
+			err = repo.Put(mockData.ID, "test_key", []byte("test_value"), time.Now().Add(time.Hour))
+			assert.NoError(t, err)
+
+			keys := []string{"test_key", "test_key_2"}
+
+			// Execute
+			items, err := repo.ExistingItems(t.Context(), mockData.ID, keys)
+			assert.NoError(t, err)
+			assert.Len(t, items, 1)
+			//assert.True(t, exists)
+
+			// Cleanup
+			_ = feedRepo.Delete(t.Context(), mockData.ID)
+			_ = indexerRepo.Delete(t.Context(), int(indexer.ID))
+			_ = repo.Delete(t.Context(), mockData.ID, "test_key")
+		})
+
+		t.Run(fmt.Sprintf("ExistingItems_MultipleItems [%s]", dbType), func(t *testing.T) {
+			// Setup
+			indexer, err := indexerRepo.Store(t.Context(), indexerMockData)
+			assert.NoError(t, err)
+			mockData.IndexerID = int(indexer.ID)
+
+			err = feedRepo.Store(t.Context(), mockData)
+			assert.NoError(t, err)
+
+			err = repo.Put(mockData.ID, "test_key", []byte("test_value"), time.Now().Add(time.Hour))
+			assert.NoError(t, err)
+
+			err = repo.Put(mockData.ID, "test_key_2", []byte("test_value_2"), time.Now().Add(time.Hour))
+			assert.NoError(t, err)
+
+			keys := []string{"test_key", "test_key_2"}
+
+			// Execute
+			items, err := repo.ExistingItems(t.Context(), mockData.ID, keys)
+			assert.NoError(t, err)
+			assert.Len(t, items, 2)
+
+			// Cleanup
+			_ = feedRepo.Delete(t.Context(), mockData.ID)
+			_ = indexerRepo.Delete(t.Context(), int(indexer.ID))
+			_ = repo.Delete(t.Context(), mockData.ID, "test_key")
+		})
+
+		t.Run(fmt.Sprintf("ExistingItems_MultipleItems_Single_Key [%s]", dbType), func(t *testing.T) {
+			// Setup
+			indexer, err := indexerRepo.Store(t.Context(), indexerMockData)
+			assert.NoError(t, err)
+			mockData.IndexerID = int(indexer.ID)
+
+			err = feedRepo.Store(t.Context(), mockData)
+			assert.NoError(t, err)
+
+			err = repo.Put(mockData.ID, "test_key", []byte("test_value"), time.Now().Add(time.Hour))
+			assert.NoError(t, err)
+
+			err = repo.Put(mockData.ID, "test_key_2", []byte("test_value_2"), time.Now().Add(time.Hour))
+			assert.NoError(t, err)
+
+			keys := []string{"test_key"}
+
+			// Execute
+			items, err := repo.ExistingItems(t.Context(), mockData.ID, keys)
+			assert.NoError(t, err)
+			assert.Len(t, items, 1)
+
+			// Cleanup
+			_ = feedRepo.Delete(t.Context(), mockData.ID)
+			_ = indexerRepo.Delete(t.Context(), int(indexer.ID))
+			_ = repo.Delete(t.Context(), mockData.ID, "test_key")
+		})
+
+		t.Run(fmt.Sprintf("ExistsItems_Nonexistent_Key [%s]", dbType), func(t *testing.T) {
+			// Execute
+			exists, err := repo.Exists(-1, "nonexistent_key")
+			assert.NoError(t, err)
+			assert.False(t, exists)
+		})
+	}
+}
+
 func TestFeedCacheRepo_Put(t *testing.T) {
 	for dbType, db := range testDBs {
 		log := setupLoggerForTest()

internal/domain/error.go

@@ -13,4 +13,5 @@ var (
 	ErrRecordNotFound                 = sql.ErrNoRows
 	ErrUpdateFailed                   = errors.New("update failed")
 	ErrDeleteFailed                   = errors.New("delete failed")
+	ErrNoActiveFiltersFoundForIndexer = errors.New("no active filters found for indexer")
 )

internal/domain/feed.go

@@ -13,6 +13,7 @@ type FeedCacheRepo interface {
 	GetByFeed(ctx context.Context, feedId int) ([]FeedCacheItem, error)
 	GetCountByFeed(ctx context.Context, feedId int) (int, error)
 	Exists(feedId int, key string) (bool, error)
+	ExistingItems(ctx context.Context, feedId int, keys []string) (map[string]bool, error)
 	Put(feedId int, key string, val []byte, ttl time.Time) error
 	PutMany(ctx context.Context, items []FeedCacheItem) error
 	Delete(ctx context.Context, feedId int, key string) error

internal/feed/newznab.go

@@ -124,7 +124,7 @@ func (j *NewznabJob) process(ctx context.Context) error {
 	}
 
 	// process all new releases
-	go j.ReleaseSvc.ProcessMultiple(releases)
+	go j.ReleaseSvc.ProcessMultipleFromIndexer(releases, j.Feed.Indexer)
 
 	return nil
 }
@@ -164,10 +164,9 @@ func (j *NewznabJob) getFeed(ctx context.Context) ([]newznab.FeedItem, error) {
 		return feed.Channel.Items[i].PubDate.After(feed.Channel.Items[j].PubDate.Time)
 	})
 
-	toCache := make([]domain.FeedCacheItem, 0)
+	// Collect all valid GUIDs first
-
+	guidItemMap := make(map[string]*newznab.FeedItem)
-	// set ttl to 1 month
+	var guids []string
-	ttl := time.Now().AddDate(0, 1, 0)
 
 	for _, item := range feed.Channel.Items {
 		if item.GUID == "" {
@@ -175,13 +174,22 @@ func (j *NewznabJob) getFeed(ctx context.Context) ([]newznab.FeedItem, error) {
 			continue
 		}
 
-		exists, err := j.CacheRepo.Exists(j.Feed.ID, item.GUID)
+		guidItemMap[item.GUID] = item
-		if err != nil {
+		guids = append(guids, item.GUID)
-			j.Log.Error().Err(err).Msg("could not check if item exists")
-			continue
 	}
 
-		if exists {
+	existingGuids, err := j.CacheRepo.ExistingItems(ctx, j.Feed.ID, guids)
+	if err != nil {
+		j.Log.Error().Err(err).Msg("could not get existing items from cache")
+		return nil, errors.Wrap(err, "could not get existing items from cache")
+	}
+
+	// set ttl to 1 month
+	ttl := time.Now().AddDate(0, 1, 0)
+	toCache := make([]domain.FeedCacheItem, 0)
+
+	for guid, item := range guidItemMap {
+		if existingGuids[guid] {
 			j.Log.Trace().Msgf("cache item exists, skipping release: %s", item.Title)
 			continue
 		}
@@ -190,7 +198,7 @@ func (j *NewznabJob) getFeed(ctx context.Context) ([]newznab.FeedItem, error) {
 
 		toCache = append(toCache, domain.FeedCacheItem{
 			FeedId: strconv.Itoa(j.Feed.ID),
-			Key:    item.GUID,
+			Key:    guid,
 			Value:  []byte(item.Title),
 			TTL:    ttl,
 		})

internal/feed/rss.go

@@ -105,7 +105,7 @@ func (j *RSSJob) process(ctx context.Context) error {
 	}
 
 	// process all new releases
-	go j.ReleaseSvc.ProcessMultiple(releases)
+	go j.ReleaseSvc.ProcessMultipleFromIndexer(releases, j.Feed.Indexer)
 
 	return nil
 }
@@ -280,11 +280,8 @@ func (j *RSSJob) getFeed(ctx context.Context) (items []*gofeed.Item, err error)
 	}
 
 	//sort.Sort(feed)
-
+	guidItemMap := make(map[string]*gofeed.Item)
-	toCache := make([]domain.FeedCacheItem, 0)
+	var guids []string
-
-	// set ttl to 1 month
-	ttl := time.Now().AddDate(0, 1, 0)
 
 	for _, item := range feed.Items {
 		key := item.GUID
@@ -295,12 +292,22 @@ func (j *RSSJob) getFeed(ctx context.Context) (items []*gofeed.Item, err error)
 			}
 		}
 
-		exists, err := j.CacheRepo.Exists(j.Feed.ID, key)
+		guidItemMap[key] = item
-		if err != nil {
+		guids = append(guids, key)
-			j.Log.Error().Err(err).Msg("could not check if item exists")
-			continue
 	}
-		if exists {
+
+	existingGuids, err := j.CacheRepo.ExistingItems(ctx, j.Feed.ID, guids)
+	if err != nil {
+		j.Log.Error().Err(err).Msgf("error getting existing items from cache")
+		return
+	}
+
+	// set ttl to 1 month
+	ttl := time.Now().AddDate(0, 1, 0)
+	toCache := make([]domain.FeedCacheItem, 0)
+
+	for guid, item := range guidItemMap {
+		if existingGuids[guid] {
 			j.Log.Trace().Msgf("cache item exists, skipping release: %s", item.Title)
 			continue
 		}
@@ -309,7 +316,7 @@ func (j *RSSJob) getFeed(ctx context.Context) (items []*gofeed.Item, err error)
 
 		toCache = append(toCache, domain.FeedCacheItem{
 			FeedId: strconv.Itoa(j.Feed.ID),
-			Key:    key,
+			Key:    guid,
 			Value:  []byte(item.Title),
 			TTL:    ttl,
 		})

internal/feed/torznab.go

@@ -158,7 +158,7 @@ func (j *TorznabJob) process(ctx context.Context) error {
 	}
 
 	// process all new releases
-	go j.ReleaseSvc.ProcessMultiple(releases)
+	go j.ReleaseSvc.ProcessMultipleFromIndexer(releases, j.Feed.Indexer)
 
 	return nil
 }
@@ -259,10 +259,9 @@ func (j *TorznabJob) getFeed(ctx context.Context) ([]torznab.FeedItem, error) {
 		return feed.Channel.Items[i].PubDate.After(feed.Channel.Items[j].PubDate.Time)
 	})
 
-	toCache := make([]domain.FeedCacheItem, 0)
+	// Collect all valid GUIDs first
-
+	guidItemMap := make(map[string]*torznab.FeedItem)
-	// set ttl to 1 month
+	var guids []string
-	ttl := time.Now().AddDate(0, 1, 0)
 
 	for _, item := range feed.Channel.Items {
 		if item.GUID == "" {
@@ -270,12 +269,24 @@ func (j *TorznabJob) getFeed(ctx context.Context) ([]torznab.FeedItem, error) {
 			continue
 		}
 
-		exists, err := j.CacheRepo.Exists(j.Feed.ID, item.GUID)
+		guidItemMap[item.GUID] = item
-		if err != nil {
+		guids = append(guids, item.GUID)
-			j.Log.Error().Err(err).Msg("could not check if item exists")
-			continue
 	}
-		if exists {
+
+	// Batch check which GUIDs already exist in the cache
+	existingGuids, err := j.CacheRepo.ExistingItems(ctx, j.Feed.ID, guids)
+	if err != nil {
+		j.Log.Error().Err(err).Msg("could not check existing items")
+		return nil, errors.Wrap(err, "could not check existing items")
+	}
+
+	// set ttl to 1 month
+	ttl := time.Now().AddDate(0, 1, 0)
+	toCache := make([]domain.FeedCacheItem, 0)
+
+	// Process items that don't exist in the cache
+	for guid, item := range guidItemMap {
+		if existingGuids[guid] {
 			j.Log.Trace().Msgf("cache item exists, skipping release: %s", item.Title)
 			continue
 		}
@@ -284,12 +295,12 @@ func (j *TorznabJob) getFeed(ctx context.Context) ([]torznab.FeedItem, error) {
 
 		toCache = append(toCache, domain.FeedCacheItem{
 			FeedId: strconv.Itoa(j.Feed.ID),
-			Key:    item.GUID,
+			Key:    guid,
 			Value:  []byte(item.Title),
 			TTL:    ttl,
 		})
 
-		// only append if we successfully added to cache
+		// Add item to result list
 		items = append(items, *item)
 	}
 

internal/release/service.go

@@ -30,6 +30,7 @@ type Service interface {
 	Delete(ctx context.Context, req *domain.DeleteReleaseRequest) error
 	Process(release *domain.Release)
 	ProcessMultiple(releases []*domain.Release)
+	ProcessMultipleFromIndexer(releases []*domain.Release, indexer domain.IndexerMinimal) error
 	ProcessManual(ctx context.Context, req *domain.ReleaseProcessReq) error
 	Retry(ctx context.Context, req *domain.ReleaseActionRetryReq) error
 
@@ -175,8 +176,6 @@ func (s *service) Process(release *domain.Release) {
 		}
 	}()
 
-	defer release.CleanupTemporaryFiles()
-
 	ctx := context.Background()
 
 	// TODO check in config for "Save all releases"
@@ -195,10 +194,23 @@ func (s *service) Process(release *domain.Release) {
 		return
 	}
 
-	if err := s.processFilters(ctx, filters, release); err != nil {
+	if err := s.processRelease(ctx, release, filters); err != nil {
 		s.log.Error().Err(err).Msgf("release.Process: error processing filters for indexer: %s", release.Indexer.Name)
 		return
 	}
+
+	return
+}
+
+func (s *service) processRelease(ctx context.Context, release *domain.Release, filters []*domain.Filter) error {
+	defer release.CleanupTemporaryFiles()
+
+	if err := s.processFilters(ctx, filters, release); err != nil {
+		s.log.Error().Err(err).Msgf("release.Process: error processing filters for indexer: %s", release.Indexer.Name)
+		return err
+	}
+
+	return nil
 }
 
 func (s *service) processFilters(ctx context.Context, filters []*domain.Filter, release *domain.Release) error {
@@ -340,7 +352,6 @@ func (s *service) ProcessMultiple(releases []*domain.Release) {
 	s.log.Debug().Msgf("process (%d) new releases from feed", len(releases))
 
 	for _, rls := range releases {
-		rls := rls
 		if rls == nil {
 			continue
 		}
@@ -348,6 +359,45 @@ func (s *service) ProcessMultiple(releases []*domain.Release) {
 	}
 }
 
+func (s *service) ProcessMultipleFromIndexer(releases []*domain.Release, indexer domain.IndexerMinimal) error {
+	s.log.Debug().Msgf("process (%d) new releases from feed %s", len(releases), indexer.Name)
+
+	defer func() {
+		if r := recover(); r != nil {
+			s.log.Error().Msgf("recovering from panic in release process %s error: %v", "", r)
+			//err := errors.New("panic in release process: %s", release.TorrentName)
+			return
+		}
+	}()
+
+	ctx := context.Background()
+
+	// get filters by priority
+	filters, err := s.filterSvc.FindByIndexerIdentifier(ctx, indexer.Identifier)
+	if err != nil {
+		s.log.Error().Err(err).Msgf("release.Process: error finding filters for indexer: %s", indexer.Name)
+		return err
+	}
+
+	if len(filters) == 0 {
+		s.log.Warn().Msgf("no active filters found for indexer: %s skipping rest..", indexer.Name)
+		return domain.ErrNoActiveFiltersFoundForIndexer
+	}
+
+	for _, release := range releases {
+		if release == nil {
+			continue
+		}
+
+		if err := s.processRelease(ctx, release, filters); err != nil {
+			s.log.Error().Err(err).Msgf("release.ProcessMultipleFromIndexer: error processing filters for indexer: %s", indexer.Name)
+			return nil
+		}
+	}
+
+	return nil
+}
+
 func (s *service) runAction(ctx context.Context, action *domain.Action, release *domain.Release, status *domain.ReleaseActionStatus) (*domain.ReleaseActionStatus, error) {
 	// add action status as pending
 	//status := domain.NewReleaseActionStatus(action, release)