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Chapter 3. Avro Serialize Action
Serialize payload to Avro
3.1. Configuration Options
The following table summarizes the configuration options available for the avro-serialize-action Kamelet:
| Property | Name | Description | Type | Default | Example |
|---|---|---|---|---|---|
| schema * | Schema | The Avro schema to use during serialization (as single-line, using JSON format) | string |
| |
| validate | Validate | Indicates if the content must be validated against the schema | boolean |
|
Fields marked with an asterisk (*) are mandatory.
3.2. Dependencies
At runtime, the avro-serialize-action Kamelet relies upon the presence of the following dependencies:
- mvn:org.apache.camel.kamelets:camel-kamelets-utils:1.0.0.fuse-800048-redhat-00001
- camel:kamelet
- camel:core
- camel:jackson-avro
3.3. Usage
This section describes how you can use the avro-serialize-action.
3.3.1. Knative Action
You can use the avro-serialize-action Kamelet as an intermediate step in a Knative binding.
avro-serialize-action-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
name: avro-serialize-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\"}]}"
sink:
ref:
kind: Channel
apiVersion: messaging.knative.dev/v1
name: mychannel
3.3.1.1. Prerequisite
Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you’re connected to.
3.3.1.2. Procedure for using the cluster CLI
-
Save the
avro-serialize-action-binding.yamlfile 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-serialize-action-binding.yaml
3.3.1.3. Procedure for using the Kamel CLI
Configure and run the action by using the following command:
kamel bind "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\"}]}" channel:mychannelThis command creates the KameletBinding in the current namespace on the cluster.
3.3.2. Kafka Action
You can use the avro-serialize-action Kamelet as an intermediate step in a Kafka binding.
avro-serialize-action-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
name: avro-serialize-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\"}]}"
sink:
ref:
kind: KafkaTopic
apiVersion: kafka.strimzi.io/v1beta1
name: my-topic
3.3.2.1. 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.
3.3.2.2. Procedure for using the cluster CLI
-
Save the
avro-serialize-action-binding.yamlfile 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-serialize-action-binding.yaml
3.3.2.3. Procedure for using the Kamel CLI
Configure and run the action by using the following command:
kamel bind "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\"}]}" kafka.strimzi.io/v1beta1:KafkaTopic:my-topicThis command creates the KameletBinding in the current namespace on the cluster.
