message timestamp router action Message Timestamp Router Action

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Preview"

Update the topic field as a function of the original topic name and the record’s timestamp field.

Configuration Options

The following table summarizes the configuration options available for the message-timestamp-router-action Kamelet:

Property Name Description Type Default Example

timestampKeys *

Timestamp Keys

Comma separated list of Timestamp keys. The timestamp is taken from the first found field.

string

timestampFormat

Timestamp Format

Format string for the timestamp that is compatible with java.text.SimpleDateFormat.

string

"yyyyMMdd"

timestampKeyFormat

Timestamp Keys Format

Format of the timestamp keys. Possible values are 'timestamp' or any format string for the timestamp that is compatible with java.text.SimpleDateFormat. In case of 'timestamp' the field will be evaluated as milliseconds since 1970, so as a UNIX Timestamp.

string

"timestamp"

topicFormat

Topic Format

Format string which can contain '$[topic]' and '$[timestamp]' as placeholders for the topic and timestamp, respectively.

string

"topic-$[timestamp]"
Fields marked with (*) are mandatory.

Usage

This section summarizes how the message-timestamp-router-action can be used in various contexts.

Knative Action

The message-timestamp-router-action Kamelet can be used as intermediate step in a Knative binding.

message-timestamp-router-action-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: message-timestamp-router-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: message-timestamp-router-action
    properties:
      timestampKeys: "The Timestamp Keys"
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

Make sure you have Camel K installed into the Kubernetes cluster you’re connected to.

Save the message-timestamp-router-action-binding.yaml file into your hard drive, then configure it according to your needs.

You can run the action using the following command:

kubectl apply -f message-timestamp-router-action-binding.yaml

Dependencies

The Kamelet needs the following dependencies:

  • github:apache.camel-kamelets:camel-kamelets-utils:main-SNAPSHOT

  • camel:jackson

  • camel:kamelet

  • camel:core

Binding to Knative using the Kamel CLI:

The procedure described above can be simplified into a single execution of the kamel bind command:

kamel bind timer-source?message=Hello --step message-timestamp-router-action -p "step-0.timestampKeys=The Timestamp Keys" channel:mychannel

This will create the KameletBinding under the hood and apply it to the current namespace in the cluster.

Kafka Action

The message-timestamp-router-action Kamelet can be used as intermediate step in a Kafka binding.

message-timestamp-router-action-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: message-timestamp-router-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: message-timestamp-router-action
    properties:
      timestampKeys: "The Timestamp Keys"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic

Ensure that you’ve installed Strimzi and created a topic named my-topic in the current namespace. Make also sure you have Camel K installed into the Kubernetes cluster you’re connected to.

Save the message-timestamp-router-action-binding.yaml file into your hard drive, then configure it according to your needs.

You can run the action using the following command:

kubectl apply -f message-timestamp-router-action-binding.yaml

Binding to Kafka using the Kamel CLI:

The procedure described above can be simplified into a single execution of the kamel bind command:

kamel bind timer-source?message=Hello --step message-timestamp-router-action -p "step-0.timestampKeys=The Timestamp Keys" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic

This will create the KameletBinding under the hood and apply it to the current namespace in the cluster.

Kamelet source file

Have a look at the following link:

https://github.com/apache/camel-kamelets/blob/main/message-timestamp-router-action.kamelet.yaml

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