Getting null from the seda queue - apache-camel

Question

I have a camel route that looks like this:
<camel:camelContext id="context" xmlns="http://camel.apache.org/schema/spring">
<propertyPlaceholder id="camelContextProperties" location="ref:lefrogen"/>
<contextScan/>
<template id="producerTemplate"/>
<template id="consumerTemplate"/>
<route id="chibzo">
<from uri="activemq:queueName"/>
<to uri="seda:internal?multipleConsumers=true"/>
</route>
<route id="chon">
<from uri="seda:internal?multipleConsumers=true"/>
<bean ref="beanName"/>
<to uri="seda:external?multipleConsumers=true"/>
</route>
</camel:camelContext>
The bean class is like this:
#Component
public class BeanName {
private final static Logger LOGGER = Logger.getLogger(BeanName.class.getName());
public static String message = null;
public static String map(String custom) {
message = custom;
return custom;
}
}
I have written a unit test which is supposed to get the data from the bean and then compare it with the data from seda:external. The problem is that I am getting null when I am fetching data from the seda queue. Here's the unit test:
public class Test{
#EndpointInject
ProducerTemplate producerTemplate;
#EndpointInject
ConsumerTemplate consumerTemplate;
#Autowired
BeanName beanName;
#Test
public void testName() throws Exception {
producerTemplate.sendBody("seda:internal","Good bye");
Thread.sleep(10000); //needs to sleep so that the bean gets executed before accessing
//beanName.message;
String message = beanName.message;
LOGGER.info("Printing" + message); //prints (Good bye)
String body = consumerTemplate.receiveBodyNoWait("seda:external", String.class);
LOGGER.info("Body is" + body); //prints null
}
Any reason why the queue is giving null?

Answer 1

Its due concurrent, and you are using recieveBodyNoWait which does a fast check. Instead use receiveBody and provide may a timeout value to avoid waiting if there is no messages on the queue.
Or add sleep in the code if you want to use receiveBodyNoWait still.