Chapter 28. Has Header Filter Action
Filter message based on the presence of one header.
28.1. Configuration Options
The following table summarizes the configuration options available for the has-header-filter-action Kamelet:
| Property | Name | Description | Type | Default | Example |
|---|---|---|---|---|---|
| name * | Header Name | The header name to evaluate. The header name must be passed by the source Kamelet. For Knative only, the name of the header requires a CloudEvent (ce-) prefix. | string | headerName | |
| value | Header Value | An optional header value to compare the header to | string | headerValue |
* = Fields marked with an asterisk are mandatory.
28.2. Dependencies
28.2.1. Quarkus dependencies
<dependencies>
<dependency>
<groupId>org.apache.camel.kamelets</groupId>
<artifactId>camel-kamelets-utils</artifactId>
<version>4.8.5</version>
</dependency>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifactId>camel-quarkus-core</artifactId>
</dependency>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifactId>camel-quarkus-has-header-filter-action</artifactId>
</dependency>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifactId>camel-quarkus-kamelet</artifactId>
</dependency>
</dependencies>28.3. Usage
28.3.1. Camel JBang usage
28.3.1.1. Prerequisites for JBang
- Install JBang.
You have executed the following command:
jbang app install camel@apache/camel
28.3.1.2. Running a route with JBang
Suppose 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.yaml28.3.2. Knative Action
You can use the has-header-filter-action Kamelet as an intermediate step in a Knative binding.
has-header-filter-action-binding.yaml
apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
name: has-header-filter-action-binding
spec:
source:
ref:
kind: Kamelet
apiVersion: camel.apache.org/v1
name: timer-source
properties:
message: "Hello"
steps:
- ref:
kind: Kamelet
apiVersion: camel.apache.org/v1
name: insert-header-action
properties:
name: "my-header"
value: "my-value"
- ref:
kind: Kamelet
apiVersion: camel.apache.org/v1
name: has-header-filter-action
properties:
name: "my-header"
sink:
ref:
kind: Channel
apiVersion: messaging.knative.dev/v1
name: mychannel28.3.3. Kafka Action
You can use the has-header-filter-action Kamelet as an intermediate step in a Kafka binding.
has-header-filter-action-binding.yaml
apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
name: has-header-filter-action-binding
spec:
source:
ref:
kind: Kamelet
apiVersion: camel.apache.org/v1
name: timer-source
properties:
message: "Hello"
steps:
- ref:
kind: Kamelet
apiVersion: camel.apache.org/v1
name: insert-header-action
properties:
name: "my-header"
value: "my-value"
- ref:
kind: Kamelet
apiVersion: camel.apache.org/v1
name: has-header-filter-action
properties:
name: "my-header"
sink:
ref:
kind: KafkaTopic
apiVersion: kafka.strimzi.io/v1beta1
name: my-topic
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