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Chapter 77. Throttle Action
The Throttle action allows you to ensure that a specific sink does not get overloaded.
77.1. Configuration Options
The following table summarizes the configuration options available for the throttle-action Kamelet:
| Property | Name | Description | Type | Default | Example |
|---|---|---|---|---|---|
| messages * | Messages Number | The number of messages to send in the time period set | integer | 10 | |
| timePeriod | Time Period | Sets the time period during which the maximum request count is valid for, in milliseconds | string | 1000 |
* = Fields marked with an asterisk are mandatory.
77.2. Dependencies
77.2.1. Quarkus dependencies
<dependencies>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifact>camel-quarkus-core</artifact>
</dependency>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifact>camel-quarkus-kamelet</artifact>
</dependency>
<dependency>
<groupId>org.apache.camel.kamelets</groupId>
<artifact>camel-kamelets-utils</artifact>
<version>4.8.5</version>
</dependency>
</dependencies>77.3. Usage
77.3.1. Camel JBang usage
77.3.1.1. Prerequisites for JBang
- Install JBang.
You have executed the following command:
jbang app install camel@apache/camel
77.3.1.2. 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.yaml77.3.2. Knative Action
You can use the throttle-action Kamelet as an intermediate step in a Knative binding.
throttle-action-binding.yaml
apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
name: throttle-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: throttle-action
properties:
messages: 1
sink:
ref:
kind: Channel
apiVersion: messaging.knative.dev/v1
name: mychannel77.3.3. Kafka Action
You can use the throttle-action Kamelet as an intermediate step in a Kafka binding.
throttle-action-binding.yaml
apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
name: throttle-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: throttle-action
properties:
messages: 1
sink:
ref:
kind: KafkaTopic
apiVersion: kafka.strimzi.io/v1beta1
name: my-topic
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