mvel template action Mvel Template Action

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Preview"

Apply a Mvel Template.

The template property needs to be encoded in base64, so when you pass it as parameter, don’t forget to encode it.

Configuration Options

The following table summarizes the configuration options available for the mvel-template-action Kamelet:

Property Name Description Type Default Example

template *

Template

The inline template

binary

Fields marked with an asterisk (*) are mandatory.

Dependencies

At runtime, the mvel-template-action Kamelet relies upon the presence of the following dependencies:

  • camel:mvel

  • camel:kamelet

Usage

This section describes how you can use the mvel-template-action.

Knative Action

You can use the mvel-template-action Kamelet as an intermediate step in a Knative binding.

mvel-template-action-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: mvel-template-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: mvel-template-action
    properties:
      template: "The Template"
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

Prerequisite

You have Camel K installed on the cluster.

Procedure for using the cluster CLI

  1. Save the mvel-template-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:

    kubectl apply -f mvel-template-action-binding.yaml

Procedure for using the Kamel CLI

Configure and run the action by using the following command:

kamel bind timer-source?message=Hello --step mvel-template-action -p "step-0.template=The Template" channel:mychannel

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

Kafka Action

You can use the mvel-template-action Kamelet as an intermediate step in a Kafka binding.

mvel-template-action-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: mvel-template-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: mvel-template-action
    properties:
      template: "The Template"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic

Prerequisites

  • You’ve installed Strimzi.

  • You’ve created a topic named my-topic in the current namespace.

  • You have Camel K installed on the cluster.

Procedure for using the cluster CLI

  1. Save the mvel-template-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:

    kubectl apply -f mvel-template-action-binding.yaml

Procedure for using the Kamel CLI

Configure and run the action by using the following command:

kamel bind timer-source?message=Hello --step mvel-template-action -p "step-0.template=The Template" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic

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