Red Hat Summit Red Hat SummitSupportConsoleDevelopersStart a trialContact

Chapter 41. JSLT Action

Apply a JSLT query or transformation on JSON.

41.1. Configuration Options
Copy link

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

Expand
PropertyNameDescriptionTypeDefaultExample

template *

Template

The inline template for JSLT Transformation

string

 

"file://template.json"

Note

Fields marked with an asterisk (*) are mandatory.

41.2. Dependencies
Copy link

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

  • camel:jslt
  • camel:kamelet

41.3. Usage
Copy link

This section describes how you can use the jslt-action.

41.3.1. Knative Action
Copy link

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

jslt-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: jslt-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: timer-source
    properties:
      message: {"foo" : "bar"}
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: jslt-action
    properties:
      template: "file://template.json"
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

41.3.1.1. Prerequisite
Copy link

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

41.3.1.2. Procedure for using the cluster CLI
Copy link

  1. Save the jslt-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 jslt-action-binding.yaml

41.3.1.3. Procedure for using the Kamel CLI
Copy link

Configure and run the action by using the following command: 

kamel bind timer-source?message=Hello --step jslt-action -p "step-0.template=file://template.json" channel:mychannel

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

If the template points to a file that is not in the current directory, and if file:// or classpath:// is used, supply the transformation using the secret or the configmap.

To view examples, see with secret and with configmap. For details about necessary traits, see Mount trait and JVM classpath trait.

41.3.2. Kafka Action
Copy link

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

jslt-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: jslt-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: timer-source
    properties:
      message: {"foo" : "bar"}
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: jslt-action
    properties:
      template: "file://template.json"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic

41.3.2.1. Prerequisites
Copy link

Ensure that you have installed the AMQ Streams operator in your OpenShift cluster and create a topic named my-topic in the current namespace. Also, you must have "Red Hat Integration - Camel K" installed into the OpenShift cluster you are connected to.

41.3.2.2. Procedure for using the cluster CLI
Copy link

  1. Save the jslt-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 jslt-action-binding.yaml

41.3.2.3. Procedure for using the Kamel CLI
Copy link

Configure and run the action by using the following command: 

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

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

41.4. Kamelet source file
Copy link

https://github.com/openshift-integration/kamelet-catalog/blob/main/jslt-action.kamelet.yaml

Red Hat logoGithubredditYoutubeTwitter

Learn

Try, buy, & sell

Communities

About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust. Explore our recent updates.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

Theme

© 2026 Red HatBack to top