activemq


How can I configure a static network of TomEE embedded ActiveMQ brokers so that clients can communicate?


I have three TomEE instances running. I'd like to use one as a 'master' broker, and have two other instances connect to the master as clients. I would like for the clients to be able to send / receive messages to one another.
The biggest requirement is that I must use static networking; simply pointing the ServerUrl in the clients' tomee.xml to the master URL is not an option.
I've verified that I'm able to statically connect two containers and pass messages, but when I introduce the third container (the master), messages stop flowing from 'Client-A' to 'Client-B'
Master tomee.xml:
<Resource
id="ra/activemq"
type="ActiveMQResourceAdapter">
BrokerXmlConfig = broker:(tcp://127.0.0.1:61616,network:static:(tcp://127.0.0.1:61615,tcp://127.0.0.1:61617))/tomeeActiveMq?useJmx=true
ServerUrl = tcp://127.0.0.1:61616
</Resource>
Client-A tomee.xml:
<Resource
id="ra/activemq"
type="ActiveMQResourceAdapter">
BrokerXmlConfig = broker:(tcp://127.0.0.1:61615,network:static:tcp://127.0.0.1:61616)/server0?useJmx=true&persistent=false
ServerUrl = tcp://127.0.0.1:61615
</Resource>
Client-B tomee.xml:
<Resource
id="ra/activemq"
type="ActiveMQResourceAdapter">
BrokerXmlConfig = broker:(tcp://127.0.0.1:61617,network:static:tcp://127.0.0.1:61616)/server1?persistent=false&useJmx=true
ServerUrl = tcp://127.0.0.1:61617
</Resource>
My ActiveMQ console shows that both clients are indeed connected to the master via a static network:
Here is a diagram of broker layout according to HawtIO:
Thanks in advance.
For 3+ broker networks, you need to set the networkTTL option to something more than 1, which is default. The TTL option sets the max limit on how many network brokers a message can reach.
So, by default you can communicate c1<->master and c2<->master but not c1<->c2 in the same network.
Not sure how to pass that option via URI in a resource adapter though.
More about the network of brokers configuration

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