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DataSet Component

Testing of distributed and asynchronous processing is notoriously difficult. The Mock, Test and DataSet endpoints work great with the Camel Testing Framework to simplify your unit and integration testing using Enterprise Integration Patterns and Camel's large range of Components together with the powerful Bean Integration.

The DataSet component provides a mechanism to easily perform load & soak testing of your system. It works by allowing you to create DataSet instances both as a source of messages and as a way to assert that the data set is received.

URI format

dataset:name

Where name is used to find the DataSet instance in the Registry

Example

For example to test that 10 million messages are sent to a queue then consumed from a queue without loosing any messages.

// send the dataset to a queue
from("dataset:foo").to("activemq:SomeQueue");

// now lets test that the messages are consumed correctly
from("activemq:SomeQueue").to("dataset:foo");

The above would look in the Registry to find the foo DataSet instance which is used to create the messages.

Then you create a DataSet implementation, such as using the SimpleDataSet

Properties on SimpleDataSet

Property

Description

defaultBody

Specifies the default message body. For SimpleDataSet it is a constant payload; though if you want to create custom payloads per message create your own derivation of DataSetSupport

reportGroup

Specifies the number of messages to be received before reporting progress. Useful for showing progress of a large load test

size

Specifies how many messages to send/consume

Load testing ActiveMQ with Camel

There is an example of load testing an ActiveMQ queue using Camel in the ActiveMQ source code repository. The code lives at this location

You can grab the code

svn co https://svn.apache.org/repos/asf/activemq/trunk/activemq-camel-loadtest/

Then try running the test case

cd activemq-camel-loadtest
mvn clean install

To see how the test is defined see the Spring XML file

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