2.3. 使用方法

这部分论述了如何使用 avro-deserialize-action。

2.3.1. Knative Action

您可以使用 avro-deserialize-action Kamelet 作为 Knative 绑定中的中间步骤。

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

2.3.1.1. 前提条件

确保您已将 "红帽集成 - Camel K" 安装到您连接的 OpenShift 集群中。

2.3.1.2. 使用集群 CLI 的步骤

将 avro-deserialize-action-binding.yaml 文件保存到本地驱动器中，然后根据需要编辑您的配置。

使用以下命令运行操作：

oc apply -f avro-deserialize-action-binding.yaml

2.3.1.3. 使用 Kamel CLI 的步骤

使用以下命令配置和运行操作：

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

此命令在集群的当前命名空间中创建 KameletBinding。

2.3.2. Kafka Action

您可以使用 avro-deserialize-action Kamelet 作为 Kafka 绑定中的中间步骤。

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

2.3.2.1. 先决条件

确保您已在 OpenShift 集群中安装了 AMQ Streams Operator，并在当前命名空间中创建一个名为 my-topic 的主题。另外，请确保已将 "红帽集成 - Camel K" 安装到您连接的 OpenShift 集群中。

2.3.2.2. 使用集群 CLI 的步骤

将 avro-deserialize-action-binding.yaml 文件保存到本地驱动器中，然后根据需要编辑您的配置。

使用以下命令运行操作：

oc apply -f avro-deserialize-action-binding.yaml

2.3.2.3. 使用 Kamel CLI 的步骤