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Chapter 71. Value to Key Action

Replace the Kafka record key with a new key formed from a subset of fields in the body

71.1. Configuration Options
링크 복사

The following table summarizes the configuration options available for the value-to-key-action Kamelet:

Expand
PropertyNameDescriptionTypeDefaultExample

fields *

Fields

Comma separated list of fields to be used to form the new key

string

  
Note

Fields marked with an asterisk (*) are mandatory.

71.2. Dependencies
링크 복사

At runtime, the value-to-key-action Kamelet relies upon the presence of the following dependencies:

  • github:openshift-integration.kamelet-catalog:camel-kamelets-utils:kamelet-catalog-1.6-SNAPSHOT
  • camel:core
  • camel:jackson
  • camel:kamelet

71.3. Usage
링크 복사

This section describes how you can use the value-to-key-action.

71.3.1. Knative Action
링크 복사

You can use the value-to-key-action Kamelet as an intermediate step in a Knative binding.

value-to-key-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: value-to-key-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: value-to-key-action
    properties:
      fields: "The Fields"
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel
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71.3.1.1. Prerequisite
링크 복사

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

71.3.1.2. Procedure for using the cluster CLI
링크 복사

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

  2. Run the action by using the following command: 

    oc apply -f value-to-key-action-binding.yaml
    Copy to Clipboard Toggle word wrap

71.3.1.3. Procedure for using the Kamel CLI
링크 복사

Configure and run the action by using the following command: 

kamel bind timer-source?message=Hello --step value-to-key-action -p "step-0.fields=The Fields" channel:mychannel
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This command creates the KameletBinding in the current namespace on the cluster.

71.3.2. Kafka Action
링크 복사

You can use the value-to-key-action Kamelet as an intermediate step in a Kafka binding.

value-to-key-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: value-to-key-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: value-to-key-action
    properties:
      fields: "The Fields"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic
Copy to Clipboard Toggle word wrap

71.3.2.1. Prerequisites
링크 복사

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.

71.3.2.2. Procedure for using the cluster CLI
링크 복사

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

  2. Run the action by using the following command: 

    oc apply -f value-to-key-action-binding.yaml
    Copy to Clipboard Toggle word wrap

71.3.2.3. Procedure for using the Kamel CLI
링크 복사

Configure and run the action by using the following command: 

kamel bind timer-source?message=Hello --step value-to-key-action -p "step-0.fields=The Fields" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic
Copy to Clipboard Toggle word wrap

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

71.4. Kamelet source file
링크 복사

https://github.com/openshift-integration/kamelet-catalog/value-to-key-action.kamelet.yaml

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