Chapter 41. JSLT Action Apply a JSLT query or transformation on JSON. 41.1. Configuration Options The following table summarizes the configuration options available for the jslt-action Kamelet: Property Name Description Type Default Example template * Template The inline template for JSLT Transformation string "file://template.json" Note Fields marked with an asterisk (*) are mandatory. 41.2. Dependencies At runtime, the jslt-action Kamelet relies upon the presence of the following dependencies: camel:jslt camel:kamelet 41.3. Usage This section describes how you can use the jslt-action . 41.3.1. Knative Action 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 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 Save the jslt-action-binding.yaml file to your local drive, and then edit it as needed for your configuration. 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 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 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 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 Save the jslt-action-binding.yaml file to your local drive, and then edit it as needed for your configuration. 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 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 https://github.com/openshift-integration/kamelet-catalog/blob/main/jslt-action.kamelet.yaml

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