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Chapter 29. Insert Field Action

Adds a custom field with a constant value to the message in transit

29.1. Configuration Options
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The following table summarizes the configuration options available for the insert-field-action Kamelet:

Expand
PropertyNameDescriptionTypeDefaultExample

field *

Field

The name of the field to be added

string

  

value *

Value

The value of the field

string

  
Note

Fields marked with an asterisk (*) are mandatory.

29.2. Dependencies
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At runtime, the insert-field-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

29.3. Usage
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This section describes how you can use the insert-field-action.

29.3.1. Knative Action
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You can use the insert-field-action Kamelet as an intermediate step in a Knative binding.

insert-field-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: insert-field-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: timer-source
    properties:
      message: '{"foo":"John"}'
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: json-deserialize-action
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: insert-field-action
    properties:
      field: "The Field"
      value: "The Value"
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel
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29.3.1.1. Prerequisite
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Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you’re connected to.

29.3.1.2. Procedure for using the cluster CLI
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  1. Save the insert-field-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 insert-field-action-binding.yaml
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29.3.1.3. Procedure for using the Kamel CLI
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Configure and run the action by using the following command: 

kamel bind --name insert-field-action-binding timer-source?message='{"foo":"John"}' --step json-deserialize-action --step insert-field-action -p step-1.field='The Field' -p step-1.value='The Value' channel:mychannel
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This command creates the KameletBinding in the current namespace on the cluster.

29.3.2. Kafka Action
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You can use the insert-field-action Kamelet as an intermediate step in a Kafka binding.

insert-field-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: insert-field-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: timer-source
    properties:
      message: '{"foo":"John"}'
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: json-deserialize-action
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: insert-field-action
    properties:
      field: "The Field"
      value: "The Value"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic
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29.3.2.1. Prerequisites
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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.

29.3.2.2. Procedure for using the cluster CLI
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  1. Save the insert-field-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 insert-field-action-binding.yaml
    Copy to Clipboard Toggle word wrap

29.3.2.3. Procedure for using the Kamel CLI
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Configure and run the action by using the following command: 

kamel bind --name insert-field-action-binding timer-source?message='{"foo":"John"}' --step json-deserialize-action --step insert-field-action -p step-1.field='The Field' -p step-1.value='The Value' kafka.strimzi.io/v1beta1:KafkaTopic:my-topic
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This command creates the KameletBinding in the current namespace on the cluster.

29.4. Kamelet source file
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https://github.com/openshift-integration/kamelet-catalog/insert-field-action.kamelet.yaml

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