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Chapter 2. Avro Deserialize Action

Deserialize payload to Avro.

2.1. Configuration Options
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The following table summarizes the configuration options available for the avro-deserialize-action Kamelet:

Expand
PropertyNameDescriptionTypeDefaultExample

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

 

* = Fields marked with an asterisk are mandatory.

2.2. Dependencies
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2.2.1. Quarkus dependencies
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<dependencies>
  <dependency>
    <groupId>org.apache.camel.kamelets</groupId>
    <artifactId>camel-kamelets-utils</artifactId>
    <version>4.8.5</version>
  </dependency>
  <dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-avro-deserialize</artifactId>
  </dependency>
  <dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-jackson-avro</artifactId>
  </dependency>
  <dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-kamelet</artifactId>
  </dependency>
</dependencies>

2.3. Usage
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2.3.1. Camel JBang usage
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2.3.1.1. Prerequisites for JBang
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  • Install JBang.

  • You have executed the following command: 

    jbang app install camel@apache/camel

2.3.1.2. Running a route with JBang
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Suppose you have a file named route.yaml with this content: 

- route:
    from:
      uri: "kamelet:timer-source"
      parameters:
        period: 10000
        message: 'test'
      steps:
        - to:
            uri: "kamelet:log-sink"

You can now run it directly through the following command. 

camel run route.yaml

2.3.2. Knative Action
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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/v1
kind: Pipe
metadata:
  name: avro-deserialize-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: timer-source
    properties:
      message: '{"first":"Ada","last":"Lovelace"}'
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: json-deserialize-action
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      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/v1
      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/v1
      name: json-serialize-action
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

2.3.3. Kafka Action
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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/v1
kind: Pipe
metadata:
  name: avro-deserialize-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: timer-source
    properties:
      message: '{"first":"Ada","last":"Lovelace"}'
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: json-deserialize-action
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      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/v1
      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/v1
      name: json-serialize-action
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic

2.4. Kamelets source file
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https://github.com/jboss-fuse/camel-kamelets/blob/camel-kamelets-4.10.3-branch/kamelets/avro-deserialize-action.kamelet.yaml

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