Timer Source

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Stable"

Produces periodic messages with a custom payload.

Configuration Options

The following table summarizes the configuration options available for the timer-source Kamelet:

Property	Name	Description	Type	Default	Example
message	Message	Required The message to generate.	string		hello world
contentType	Content Type	The content type of the generated message.	string	text/plain
period	Period	The interval (in milliseconds) to wait between producing the next message.	integer	1000
repeatCount	Repeat Count	Specifies a maximum limit of number of fires.	integer

Property

Name

Description

Type

Default

Example

message

Message

Required The message to generate.

string

hello world

contentType

Content Type

The content type of the generated message.

string

text/plain

period

Period

The interval (in milliseconds) to wait between producing the next message.

integer

1000

repeatCount

Repeat Count

Specifies a maximum limit of number of fires.

integer

Dependencies

At runtime, the timer-source Kamelet relies upon the presence of the following dependencies:

camel:core
camel:timer
camel:kamelet

Camel JBang usage

Prerequisites

You’ve installed JBang.
You have executed the following command:

jbang app install camel@apache/camel

Supposing you have a file named route.yaml with this content:

- route:
    from:
      uri: "kamelet:timer-source"
      parameters:
        period: 10000
        message: 'test'
      steps:
        - to:
            uri: "kamelet:log-sink"

You can now run it directly through the following command

camel run route.yaml

Camel K Environment Usage

This section describes how you can use the timer-source.

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/v1
kind: KameletBinding
metadata:
  name: timer-source-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: timer-source
    properties:
      message: hello world
  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

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:
```
kubectl apply -f timer-source-binding.yaml
```

Procedure for using the Kamel CLI

Configure and run the source by using the following command:

kamel bind channel:mychannel -p "source.message=hello world" timer-source

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

Kafka source

You can use the timer-source Kamelet as a Kafka source by binding it to a Kafka topic.