Configuring a Kafka handler

How to configure a Kafka handler.

1. In the search field, enter kafka.
2. From the search results, click Kafka handler.
3. Click Add.
4. Define the basic properties - Name, administrative state, and comments.
5. From the Kafka cluster list, select a Kafka cluster.
6. Define the request topic that can be schema-validated. By default, request topics are not schema-validated.
   1. In the Request topic field, enter the name of the request topic to monitor for incoming client requests. On receipt, the handler forwards the extracted message to the DataPower service for processing.
   2. To validate the message against a schema, select Avro from the Validate request list.
   3. In the Request schema file field, specify the schema file in the local: directory.
7. Optional: Define the response topic that can be schema-validated. By default, request topics are not schema-validated.
   1. In the Response topic field, enter the name of the response topic to send responses after processing. Provide a value only when the Kafka server expects responses. When blank, responses are dropped.
   2. To validate the message against a schema, select Avro from the Validate response list.
   3. In the Response schema file field, specify the schema file in the local: directory.
8. In the Consumer group field, enter the name of the consumer group for retrieving messages from the Kafka server.
9. In the Batch size field, enter the number of messages that the Kafka handler processes as a batch. The handler attempts to retrieve the number of specified messages from the consumer and processes these messages as a batch.
10. Click Apply to save changes to the running configuration.
11. Click Save to save changes to the persisted configuration.