protobuf serialize action Protobuf Serialize Action

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Preview"

Serialize payload to Protobuf

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; }"

Fields marked with (*) are mandatory.

Usage

This section summarizes how the protobuf-serialize-action can be used in various contexts.

Knative Action

The protobuf-serialize-action Kamelet can be used as 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: "Hello"
  steps:
  - 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: InMemoryChannel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

Make sure you have Camel K installed into the Kubernetes cluster you’re connected to.

Save the protobuf-serialize-action-binding.yaml file into your hard drive, then configure it according to your needs.

You can run the action using the following command:

kubectl apply -f protobuf-serialize-action-binding.yaml

Binding to Knative using the Kamel CLI:

The procedure described above can be simplified into a single execution of the kamel bind command:

kamel bind timer-source?message=Hello --step protobuf-serialize-action -p "step-0.schema=message Person { required string first = 1; required string last = 2; }" channel/mychannel

This will create the KameletBinding under the hood and apply it to the current namespace in the cluster.

Kafka Action

The protobuf-serialize-action Kamelet can be used as 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: "Hello"
  steps:
  - 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

Ensure that you’ve installed Strimzi and created a topic named my-topic in the current namespace. Make also sure you have Camel K installed into the Kubernetes cluster you’re connected to.

Save the protobuf-serialize-action-binding.yaml file into your hard drive, then configure it according to your needs.

You can run the action using the following command:

kubectl apply -f protobuf-serialize-action-binding.yaml

Binding to Kafka using the Kamel CLI:

The procedure described above can be simplified into a single execution of the kamel bind command:

kamel bind timer-source?message=Hello --step protobuf-serialize-action -p "step-0.schema=message Person { required string first = 1; required string last = 2; }" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic

This will create the KameletBinding under the hood and apply it to the current namespace in the cluster.