Chapter 30. Insert Header Action
Adds an header with a constant value to the message in transit
30.1. Configuration Options
The following table summarizes the configuration options available for the insert-header-action Kamelet:
| Property | Name | Description | Type | Default | Example |
|---|---|---|---|---|---|
| name * | Name | The name of the header to be added. For Knative only, the name of the header requires a CloudEvent (ce-) prefix. | string | ||
| value * | Value | The value of the header | string |
Fields marked with an asterisk (*) are mandatory.
30.2. Dependencies
At runtime, the insert-header-action Kamelet relies upon the presence of the following dependencies:
- camel:core
- camel:kamelet
30.3. Usage
This section describes how you can use the insert-header-action.
30.3.1. Knative Action
You can use the insert-header-action Kamelet as an intermediate step in a Knative binding.
insert-header-action-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
name: insert-header-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: insert-header-action
properties:
name: "The Name"
value: "The Value"
sink:
ref:
kind: Channel
apiVersion: messaging.knative.dev/v1
name: mychannel
30.3.1.1. Prerequisite
Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you’re connected to.
30.3.1.2. Procedure for using the cluster CLI
-
Save the
insert-header-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 insert-header-action-binding.yaml
30.3.1.3. Procedure for using the Kamel CLI
Configure and run the action by using the following command:
kamel bind timer-source?message=Hello --step insert-header-action -p "step-0.name=The Name" -p "step-0.value=The Value" channel:mychannel
This command creates the KameletBinding in the current namespace on the cluster.
30.3.2. Kafka Action
You can use the insert-header-action Kamelet as an intermediate step in a Kafka binding.
insert-header-action-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
name: insert-header-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: insert-header-action
properties:
name: "The Name"
value: "The Value"
sink:
ref:
kind: KafkaTopic
apiVersion: kafka.strimzi.io/v1beta1
name: my-topic
30.3.2.1. 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.
30.3.2.2. Procedure for using the cluster CLI
-
Save the
insert-header-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 insert-header-action-binding.yaml
30.3.2.3. Procedure for using the Kamel CLI
Configure and run the action by using the following command:
kamel bind timer-source?message=Hello --step insert-header-action -p "step-0.name=The Name" -p "step-0.value=The Value" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic
This command creates the KameletBinding in the current namespace on the cluster.
30.4. Kamelet source file
https://github.com/openshift-integration/kamelet-catalog/insert-header-action.kamelet.yaml
