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Chapter 1. Avro Deserialize Action

Deserialize payload to Avro

1.1. Configuration Options

The following table summarizes the configuration options available for the avro-deserialize-action Kamelet:

Property	Name	Description	Type	Default	Example
schema *	Schema	The Avro schema to use during serialization (as single-line, using JSON format)	string		`"{\"type\": \"record\", \"namespace\": \"com.example\", \"name\": \"FullName\", \"fields\": [{\"name\": \"first\", \"type\": \"string\"},{\"name\": \"last\", \"type\": \"string\"}]}"`
validate	Validate	Indicates if the content must be validated against the schema	boolean	`true`

Note

Fields marked with an asterisk (*) are mandatory.

1.2. Dependencies

At runtime, the avro-deserialize-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-avro

1.3. Usage

This section describes how you can use the avro-deserialize-action.

1.3.1. Knative Action

You can use the avro-deserialize-action Kamelet as an intermediate step in a Knative binding.

avro-deserialize-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: avro-deserialize-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: timer-source
    properties:
      message: '{"first":"Ada","last":"Lovelace"}'
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: json-deserialize-action
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: avro-serialize-action
    properties:
      schema: "{\"type\": \"record\", \"namespace\": \"com.example\", \"name\": \"FullName\", \"fields\": [{\"name\": \"first\", \"type\": \"string\"},{\"name\": \"last\", \"type\": \"string\"}]}"
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: avro-deserialize-action
    properties:
      schema: "{\"type\": \"record\", \"namespace\": \"com.example\", \"name\": \"FullName\", \"fields\": [{\"name\": \"first\", \"type\": \"string\"},{\"name\": \"last\", \"type\": \"string\"}]}"
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: json-serialize-action
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

1.3.1.1. Prerequisite

Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you’re connected to.

1.3.1.2. Procedure for using the cluster CLI

Save the avro-deserialize-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 avro-deserialize-action-binding.yaml

1.3.1.3. Procedure for using the Kamel CLI

Configure and run the action by using the following command:

kamel bind --name avro-deserialize-action-binding timer-source?message='{"first":"Ada","last":"Lovelace"}' --step json-deserialize-action --step avro-serialize-action -p step-1.schema='{"type": "record", "namespace": "com.example", "name": "FullName", "fields": [{"name": "first", "type": "string"},{"name": "last", "type": "string"}]}' --step avro-deserialize-action -p step-2.schema='{"type": "record", "namespace": "com.example", "name": "FullName", "fields": [{"name": "first", "type": "string"},{"name": "last", "type": "string"}]}' --step json-serialize-action channel:mychannel

This command creates the KameletBinding in the current namespace on the cluster.

1.3.2. Kafka Action

You can use the avro-deserialize-action Kamelet as an intermediate step in a Kafka binding.

avro-deserialize-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: avro-deserialize-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: timer-source
    properties:
      message: '{"first":"Ada","last":"Lovelace"}'
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: json-deserialize-action
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: avro-serialize-action
    properties:
      schema: "{\"type\": \"record\", \"namespace\": \"com.example\", \"name\": \"FullName\", \"fields\": [{\"name\": \"first\", \"type\": \"string\"},{\"name\": \"last\", \"type\": \"string\"}]}"
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: avro-deserialize-action
    properties:
      schema: "{\"type\": \"record\", \"namespace\": \"com.example\", \"name\": \"FullName\", \"fields\": [{\"name\": \"first\", \"type\": \"string\"},{\"name\": \"last\", \"type\": \"string\"}]}"
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: json-serialize-action
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic

1.3.2.1. 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.

1.3.2.2. Procedure for using the cluster CLI

Save the avro-deserialize-action-binding.yaml file to your local drive, and then edit it as needed for your configuration.