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Durable Subscriber

Camel supports the Durable Subscriber from the EIP patterns using the JMS component which supports publish & subscribe using Topics with support for non-durable and durable subscribers.

Another alternative is to combine the Message Dispatcher or Content Based Router with File or JPA components for durable subscribers then something like Seda for non-durable.

Here is a simple example of creating durable subscribers to a JMS topic

Using the Fluent Builders

Code Block
java
java
from("direct:start").to("activemq:topic:foo");

from("activemq:topic:foo?clientId=1&durableSubscriptionName=bar1").to("mock:result1");

from("activemq:topic:foo?clientId=2&durableSubscriptionName=bar2").to("mock:result2");

Using the Spring XML Extensions

Code Block
xml
xml
<route>
    <from uri="direct:start"/>
    <to uri="activemq:topic:foo"/>
</route>

<route>
    <from uri="activemq:topic:foo?clientId=1&durableSubscriptionName=bar1"/>
    <to uri="mock:result1"/>
</route>

<route>
    <from uri="activemq:topic:foo?clientId=2&durableSubscriptionName=bar2"/>
    <to uri="mock:result2"/>
</route>

Here is another example of JMS durable subscribers, but this time using virtual topics (recommended by AMQ over durable subscriptions)

Using the Fluent Builders

Code Block
java
java
from("direct:start").to("activemq:topic:VirtualTopic.foo");

from("activemq:queue:Consumer.1.VirtualTopic.foo").to("mock:result1");

from("activemq:queue:Consumer.2.VirtualTopic.foo").to("mock:result2");

Using the Spring XML Extensions

Code Block
xml
xml
<route>
    <from uri="direct:start"/>
    <to uri="activemq:topic:VirtualTopic.foo"/>
</route>

<route>
    <from uri="activemq:queue:Consumer.1.VirtualTopic.foo"/>
    <to uri="mock:result1"/>
</route>

<route>
    <from uri="activemq:queue:Consumer.2.VirtualTopic.foo"/>
    <to uri="mock:result2"/>
</route>

See Also

Include Page
Using This Pattern
Using This Pattern