Chapter 44. Kafka Sink Send data to Kafka topics. The Kamelet is able to understand the following headers to be set: key / ce-key : as message key partition-key / ce-partitionkey : as message partition key Both the headers are optional. 44.1. Configuration Options The following table summarizes the configuration options available for the kafka-sink Kamelet: Property Name Description Type Default Example bootstrapServers * Brokers Comma separated list of Kafka Broker URLs string password * Password Password to authenticate to kafka string topic * Topic Names Comma separated list of Kafka topic names string user * Username Username to authenticate to Kafka string saslMechanism SASL Mechanism The Simple Authentication and Security Layer (SASL) Mechanism used. string "PLAIN" securityProtocol Security Protocol Protocol used to communicate with brokers. SASL_PLAINTEXT, PLAINTEXT, SASL_SSL and SSL are supported string "SASL_SSL" Note Fields marked with an asterisk (*) are mandatory. 44.2. Dependencies At runtime, the `kafka-sink Kamelet relies upon the presence of the following dependencies: camel:kafka camel:kamelet 44.3. Usage This section describes how you can use the kafka-sink . 44.3.1. Knative Sink You can use the kafka-sink Kamelet as a Knative sink by binding it to a Knative object. kafka-sink-binding.yaml apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: kafka-sink-binding spec: source: ref: kind: Channel apiVersion: messaging.knative.dev/v1 name: mychannel sink: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: kafka-sink properties: bootstrapServers: "The Brokers" password: "The Password" topic: "The Topic Names" user: "The Username" 44.3.1.1. Prerequisite Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you're connected to. 44.3.1.2. Procedure for using the cluster CLI Save the kafka-sink-binding.yaml file to your local drive, and then edit it as needed for your configuration. Run the sink by using the following command: oc apply -f kafka-sink-binding.yaml 44.3.1.3. Procedure for using the Kamel CLI Configure and run the sink by using the following command: kamel bind channel:mychannel kafka-sink -p "sink.bootstrapServers=The Brokers" -p "sink.password=The Password" -p "sink.topic=The Topic Names" -p "sink.user=The Username" This command creates the KameletBinding in the current namespace on the cluster. 44.3.2. Kafka Sink You can use the kafka-sink Kamelet as a Kafka sink by binding it to a Kafka topic. kafka-sink-binding.yaml apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: kafka-sink-binding spec: source: ref: kind: KafkaTopic apiVersion: kafka.strimzi.io/v1beta1 name: my-topic sink: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: kafka-sink properties: bootstrapServers: "The Brokers" password: "The Password" topic: "The Topic Names" user: "The Username" 44.3.2.1. Prerequisites Ensure that you've installed the AMQ Streams operator in your OpenShift cluster and created a topic named my-topic in the current namespace. Make also sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you're connected to. 44.3.2.2. Procedure for using the cluster CLI Save the kafka-sink-binding.yaml file to your local drive, and then edit it as needed for your configuration. Run the sink by using the following command: oc apply -f kafka-sink-binding.yaml 44.3.2.3. Procedure for using the Kamel CLI Configure and run the sink by using the following command: kamel bind kafka.strimzi.io/v1beta1:KafkaTopic:my-topic kafka-sink -p "sink.bootstrapServers=The Brokers" -p "sink.password=The Password" -p "sink.topic=The Topic Names" -p "sink.user=The Username" This command creates the KameletBinding in the current namespace on the cluster. 44.4. Kamelet source file https://github.com/openshift-integration/kamelet-catalog/kafka-sink.kamelet.yaml

Commands:
apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: kafka-sink-binding spec: source: ref: kind: Channel apiVersion: messaging.knative.dev/v1 name: mychannel sink: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: kafka-sink properties: bootstrapServers: "The Brokers" password: "The Password" topic: "The Topic Names" user: "The Username"
apply -f kafka-sink-binding.yaml
kamel bind channel:mychannel kafka-sink -p "sink.bootstrapServers=The Brokers" -p "sink.password=The Password" -p "sink.topic=The Topic Names" -p "sink.user=The Username"
apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: kafka-sink-binding spec: source: ref: kind: KafkaTopic apiVersion: kafka.strimzi.io/v1beta1 name: my-topic sink: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: kafka-sink properties: bootstrapServers: "The Brokers" password: "The Password" topic: "The Topic Names" user: "The Username"
apply -f kafka-sink-binding.yaml
kamel bind kafka.strimzi.io/v1beta1:KafkaTopic:my-topic kafka-sink -p "sink.bootstrapServers=The Brokers" -p "sink.password=The Password" -p "sink.topic=The Topic Names" -p "sink.user=The Username"