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Chapter 33. Kafka Topic Name Matches Filter Action

Filter based on kafka topic value compared to regex

33.1. Configuration Options
링크 복사

The following table summarizes the configuration options available for the topic-name-matches-filter-action Kamelet:

Expand
PropertyNameDescriptionTypeDefaultExample

regex *

Regex

The Regex to Evaluate against the Kafka topic name

string

  
Note

Fields marked with an asterisk (*) are mandatory.

33.2. Dependencies
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At runtime, the topic-name-matches-filter-action Kamelet relies upon the presence of the following dependencies:

  • camel:core
  • camel:kamelet

33.3. Usage
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This section describes how you can use the topic-name-matches-filter-action.

33.3.1. Knative Action
링크 복사

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

topic-name-matches-filter-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: topic-name-matches-filter-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: topic-name-matches-filter-action
    properties:
      regex: "The Regex"
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel
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33.3.1.1. Prerequisite
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Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you’re connected to.

33.3.1.2. Procedure for using the cluster CLI
링크 복사

  1. Save the topic-name-matches-filter-action-binding.yaml file to your local drive, and then edit it as needed for your configuration.

  2. Run the action by using the following command: 

    oc apply -f topic-name-matches-filter-action-binding.yaml
    Copy to Clipboard Toggle word wrap

33.3.1.3. Procedure for using the Kamel CLI
링크 복사

Configure and run the action by using the following command: 

kamel bind timer-source?message=Hello --step topic-name-matches-filter-action -p "step-0.regex=The Regex" channel:mychannel
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This command creates the KameletBinding in the current namespace on the cluster.

33.3.2. Kafka Action
링크 복사

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

topic-name-matches-filter-action-binding.yaml

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: topic-name-matches-filter-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: topic-name-matches-filter-action
    properties:
      regex: "The Regex"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic
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33.3.2.1. Prerequisites
링크 복사

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.

33.3.2.2. Procedure for using the cluster CLI
링크 복사

  1. Save the topic-name-matches-filter-action-binding.yaml file to your local drive, and then edit it as needed for your configuration.

  2. Run the action by using the following command: 

    oc apply -f topic-name-matches-filter-action-binding.yaml
    Copy to Clipboard Toggle word wrap

33.3.2.3. Procedure for using the Kamel CLI
링크 복사

Configure and run the action by using the following command: 

kamel bind timer-source?message=Hello --step topic-name-matches-filter-action -p "step-0.regex=The Regex" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic
Copy to Clipboard Toggle word wrap

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

33.4. Kamelet source file
링크 복사

https://github.com/openshift-integration/kamelet-catalog/blob/kamelet-catalog-1.6/topic-name-matches-filter-action.kamelet.yaml

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