Simple Filter Action

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Stable"

Filter based on simple expression

Configuration Options

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

Property	Name	Description	Type	Default	Example
expression	Simple Expression	Required A simple expression to apply on the exchange to filter out some exchange.	string

Property

Name

Description

Type

Default

Example

expression

Simple Expression

Required A simple expression to apply on the exchange to filter out some exchange.

string

Dependencies

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

camel:core
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 simple-filter-action.

Knative action

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

simple-filter-action-pipe.yaml

apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
  name: simple-filter-action-pipe
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: kafka-source
      properties:
        bootstrapServers: localhost:9092
        topic: mytopic
        user: kafka
        password: kafka123!
  steps:
    - ref:
        kind: Kamelet
        apiVersion: camel.apache.org/v1
        name: simple-filter-action
      properties:
        expression: The Simple Expression
  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 simple-filter-action-pipe.yaml file to your local drive, and then edit it as needed for your configuration.

Run the action by using the following command:

kubectl apply -f simple-filter-action-pipe.yaml

Procedure for using the Kamel CLI

Configure and run the action by using the following command:

kamel bind channel:mychannel -p "step-0.expression=The Simple Expression" simple-filter-action

This command creates the Kamelet Pipe in the current namespace on the cluster.

Kafka action

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