Fix indexer behavior when no kvblock-keys are generated (#118)

* return empty scores when no block-keys

Signed-off-by: Maroon Ayoub <[email protected]>

* //nolint:nilnil

Signed-off-by: Maroon Ayoub <[email protected]>

---------

Signed-off-by: Maroon Ayoub <[email protected]>

Author: vMaroon

pkg/kvcache/indexer.go

@@ -124,6 +124,12 @@ func (k *Indexer) GetPodScores(ctx context.Context, prompt, modelName string,
 
 	// 2. get block keys
 	blockKeys := k.tokensProcessor.TokensToKVBlockKeys(tokens, modelName)
+	if len(blockKeys) == 0 {
+		traceLogger.Info("no block keys found, returning empty scores")
+		//nolint:nilnil // no need to return an error
+		return nil, nil
+	}
+
 	traceLogger.Info("found tokens", "tokens", tokens, "block-keys", blockKeys)
 
 	// 3. query kvblock indexer for pods