Chapter 70. Timer Source Produces periodic events with a custom payload. 70.1. Configuration Options The following table summarizes the configuration options available for the timer-source Kamelet: Property Name Description Type Default Example message * Message The message to generate string "hello world" contentType Content Type The content type of the message being generated string "text/plain" period Period The interval between two events in milliseconds integer 1000 repeatCount Repeat Count Specifies the maximum limit of the number of fires integer Note Fields marked with an asterisk (*) are mandatory. 70.2. Dependencies At runtime, the timer-source Kamelet relies upon the presence of the following dependencies: camel:core camel:timer camel:kamelet 70.3. Usage This section describes how you can use the timer-source . 70.3.1. Knative Source You can use the timer-source Kamelet as a Knative source by binding it to a Knative object. timer-source-binding.yaml apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: timer-source-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: timer-source properties: message: "hello world" sink: ref: kind: Channel apiVersion: messaging.knative.dev/v1 name: mychannel 70.3.1.1. Prerequisite Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you're connected to. 70.3.1.2. Procedure for using the cluster CLI Save the timer-source-binding.yaml file to your local drive, and then edit it as needed for your configuration. Run the source by using the following command: oc apply -f timer-source-binding.yaml 70.3.1.3. Procedure for using the Kamel CLI Configure and run the source by using the following command: kamel bind timer-source -p "source.message=hello world" channel:mychannel This command creates the KameletBinding in the current namespace on the cluster. 70.3.2. Kafka Source You can use the timer-source Kamelet as a Kafka source by binding it to a Kafka topic. timer-source-binding.yaml apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: timer-source-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: timer-source properties: message: "hello world" sink: ref: kind: KafkaTopic apiVersion: kafka.strimzi.io/v1beta1 name: my-topic 70.3.2.1. 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. 70.3.2.2. Procedure for using the cluster CLI Save the timer-source-binding.yaml file to your local drive, and then edit it as needed for your configuration. Run the source by using the following command: oc apply -f timer-source-binding.yaml 70.3.2.3. Procedure for using the Kamel CLI Configure and run the source by using the following command: kamel bind timer-source -p "source.message=hello world" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic This command creates the KameletBinding in the current namespace on the cluster. 70.4. Kamelet source file https://github.com/openshift-integration/kamelet-catalog/timer-source.kamelet.yaml

Commands:
apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: timer-source-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: timer-source properties: message: "hello world" sink: ref: kind: Channel apiVersion: messaging.knative.dev/v1 name: mychannel
apply -f timer-source-binding.yaml
kamel bind timer-source -p "source.message=hello world" channel:mychannel
apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: timer-source-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: timer-source properties: message: "hello world" sink: ref: kind: KafkaTopic apiVersion: kafka.strimzi.io/v1beta1 name: my-topic
apply -f timer-source-binding.yaml
kamel bind timer-source -p "source.message=hello world" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic