Add more logs to debug the output of Sarama DescribeTopics method (#…

…5141)

Signed-off-by: dttung2905 <[email protected]>

CHANGELOG.md

@@ -64,6 +64,7 @@ Here is an overview of all new **experimental** features:
 - **General**: Support TriggerAuthentication properties from ConfigMap ([#4830](https://github.com/kedacore/keda/issues/4830))
 - **Hashicorp Vault**: Add support to get secret that needs write operation (e.g. pki) ([#5067](https://github.com/kedacore/keda/issues/5067))
 - **Kafka Scaler**: Ability to set upper bound to the number of partitions with lag ([#3997](https://github.com/kedacore/keda/issues/3997))
+- **Kafka Scaler**: Add more logging to check Sarama DescribeTopics method ([#5102](https://github.com/kedacore/keda/issues/5102))
 - **Kafka Scaler**: Add support for Kerberos authentication (SASL / GSSAPI) ([#4836](https://github.com/kedacore/keda/issues/4836))
 - **Prometheus Metrics**: Introduce paused ScaledObjects in Prometheus metrics ([#4430](https://github.com/kedacore/keda/issues/4430))
 - **Pulsar Scaler**: support endpointParams in pulsar oauth ([#5069](https://github.com/kedacore/keda/issues/5069))

pkg/scalers/apache_kafka_scaler.go

@@ -426,7 +426,7 @@ func (s *apacheKafkaScaler) getTopicPartitions(ctx context.Context) (map[string]
 	if err != nil {
 		return nil, fmt.Errorf("error getting metadata: %w", err)
 	}
-	s.logger.V(4).Info(fmt.Sprintf("Listed topics %v", metadata.Topics))
+	s.logger.V(1).Info(fmt.Sprintf("Listed topics %v", metadata.Topics))
 
 	if len(s.metadata.topic) == 0 {
 		// in case of empty topic name, we will get all topics that the consumer group is subscribed to

pkg/scalers/kafka_scaler.go

@@ -594,6 +594,9 @@ func (s *kafkaScaler) getTopicPartitions() (map[string][]int32, error) {
 	if err != nil {
 		return nil, fmt.Errorf("error describing topics: %w", err)
 	}
+	s.logger.V(1).Info(
+		fmt.Sprintf("with topic name %s the list of topic metadata is %v", topicsToDescribe, topicsMetadata),
+	)
 
 	if s.metadata.topic != "" && len(topicsMetadata) != 1 {
 		return nil, fmt.Errorf("expected only 1 topic metadata, got %d", len(topicsMetadata))