Chapter 57. Protobuf Serialize Action Serialize payload to Protobuf 57.1. Configuration Options The following table summarizes the configuration options available for the protobuf-serialize-action Kamelet: Property Name Description Type Default Example schema * Schema The Protobuf schema to use during serialization (as single-line) string "message Person { required string first = 1; required string last = 2; }" Note Fields marked with an asterisk (*) are mandatory. 57.2. Dependencies At runtime, the protobuf-serialize-action Kamelet relies upon the presence of the following dependencies: github:openshift-integration.kamelet-catalog:camel-kamelets-utils:kamelet-catalog-1.6-SNAPSHOT camel:kamelet camel:core camel:jackson-protobuf 57.3. Usage This section describes how you can use the protobuf-serialize-action . 57.3.1. Knative Action You can use the protobuf-serialize-action Kamelet as an intermediate step in a Knative binding. protobuf-serialize-action-binding.yaml apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: protobuf-serialize-action-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: timer-source properties: message: '{"first": "John", "last":"Doe"}' steps: - ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: json-deserialize-action - ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: protobuf-serialize-action properties: schema: "message Person { required string first = 1; required string last = 2; }" sink: ref: kind: Channel apiVersion: messaging.knative.dev/v1 name: mychannel 57.3.1.1. Prerequisite Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you're connected to. 57.3.1.2. Procedure for using the cluster CLI Save the protobuf-serialize-action-binding.yaml file to your local drive, and then edit it as needed for your configuration. Run the action by using the following command: oc apply -f protobuf-serialize-action-binding.yaml 57.3.1.3. Procedure for using the Kamel CLI Configure and run the action by using the following command: kamel bind --name protobuf-serialize-action-binding timer-source?message='{"first":"John","last":"Doe"}' --step json-deserialize-action --step protobuf-serialize-action -p step-1.schema='message Person { required string first = 1; required string last = 2; }' channel:mychannel This command creates the KameletBinding in the current namespace on the cluster. 57.3.2. Kafka Action You can use the protobuf-serialize-action Kamelet as an intermediate step in a Kafka binding. protobuf-serialize-action-binding.yaml apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: protobuf-serialize-action-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: timer-source properties: message: '{"first": "John", "last":"Doe"}' steps: - ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: json-deserialize-action - ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: protobuf-serialize-action properties: schema: "message Person { required string first = 1; required string last = 2; }" sink: ref: kind: KafkaTopic apiVersion: kafka.strimzi.io/v1beta1 name: my-topic 57.3.2.1. 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. 57.3.2.2. Procedure for using the cluster CLI Save the protobuf-serialize-action-binding.yaml file to your local drive, and then edit it as needed for your configuration. Run the action by using the following command: oc apply -f protobuf-serialize-action-binding.yaml 57.3.2.3. Procedure for using the Kamel CLI Configure and run the action by using the following command: kamel bind --name protobuf-serialize-action-binding timer-source?message='{"first":"John","last":"Doe"}' --step json-deserialize-action --step protobuf-serialize-action -p step-1.schema='message Person { required string first = 1; required string last = 2; }' kafka.strimzi.io/v1beta1:KafkaTopic:my-topic This command creates the KameletBinding in the current namespace on the cluster. 57.4. Kamelet source file https://github.com/openshift-integration/kamelet-catalog/protobuf-serialize-action.kamelet.yaml

Commands:
apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: protobuf-serialize-action-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: timer-source properties: message: '{"first": "John", "last":"Doe"}' steps: - ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: json-deserialize-action - ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: protobuf-serialize-action properties: schema: "message Person { required string first = 1; required string last = 2; }" sink: ref: kind: Channel apiVersion: messaging.knative.dev/v1 name: mychannel
apply -f protobuf-serialize-action-binding.yaml
kamel bind --name protobuf-serialize-action-binding timer-source?message='{"first":"John","last":"Doe"}' --step json-deserialize-action --step protobuf-serialize-action -p step-1.schema='message Person { required string first = 1; required string last = 2; }' channel:mychannel
apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: protobuf-serialize-action-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: timer-source properties: message: '{"first": "John", "last":"Doe"}' steps: - ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: json-deserialize-action - ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: protobuf-serialize-action properties: schema: "message Person { required string first = 1; required string last = 2; }" sink: ref: kind: KafkaTopic apiVersion: kafka.strimzi.io/v1beta1 name: my-topic
apply -f protobuf-serialize-action-binding.yaml
kamel bind --name protobuf-serialize-action-binding timer-source?message='{"first":"John","last":"Doe"}' --step json-deserialize-action --step protobuf-serialize-action -p step-1.schema='message Person { required string first = 1; required string last = 2; }' kafka.strimzi.io/v1beta1:KafkaTopic:my-topic