On 05/28/2013 05:56 PM, Jeremy Wagner wrote:
Hello,When I set up a sender and receiver to a topic using Qpid 0.18, I noticed that the topic appears under Queues instead of Topics when viewed through the JMX console, even though I already have the topic defined in the XML configuration file. It also appears to have a randomized string of hexadecimals appended to the topic name under Queues. For example, I have the topic, "test.topic", defined in the XML configuration file as follows: ... <exchanges> <exchange> <type>topic</type> <name>test.topic</name> </exchange> <exchanges> ... When I bring up the JMX console, everything looks fine as the test.topic appears under Topics. However, when I set up a receiver or a sender to that topic as follows (ignoring error cases): Connection connection("localhost", "<connection options goes here...>"); connection.open(); Session session = connection.createSession(); Sender sender = session.createSender("test.topic"); // this appears to create "test.topic_randomized_string_of_hexadecimals)" under Queues Receiver receiver = session.createReceiver("test.topic"); // same as above Since it created a "topic" under "Queues", I tried the following code to set the address' type as "topic" as follows: Connection connection("localhost", "<connection options goes here...>"); connection.open(); Session session = connection.createSession(); Address address("test.topic"); address.setType("topic"); Sender sender = session.createSender(address); // it still connects to "test.topic_randomized_string_of_hexadecimals" under Queues Receiver receiver = session.createReceiver(address); // same as above So I'm not sure why I'm unable to connect to the defined "test.topic" as stated in the XML configuration file. Any advice would be appreciated. Thank you.
A topic is emulated by the receivers creating and binding a subscription queue to the specified exchange. Messages published to that exchange will then be routed to any queue whose binding matches.
The queues you are seeing are subscription queues, bound to the test.topic exchange. They are given unique names by adding a UUID to the exchange name.
Does that make sense? I assume your senders and receivers were all able to communicate?
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