On 15/05/18 04:49, Mansour Al Akeel wrote:
Gordon,
Thank you for replying. I am sorry I didn't explain it well. Maybe I was
relying on the link on ServiceMix mailing list. I will try to explain it
again here.
We have two systems, on separate networks. System A and System B. Each of
them provide different services. Some services in System A, need to call
services on System B. However, since each of them on a different network,
we have to rely on opening holes in the firewalls.
I think we can replace the existing setup, with a AMQP. For example a
service on system A (Service A), can call a service on System B (Service
B), buy connecting to an instance of QPID, and send a message to a queue
called INPUT_A. Service B would get this message, and process it, then
reply on queue OUTPUT_B. Service A would then select the reply based on
CorrelationId, and match it with the request.
Yes, you can use queues. You can also communicate end-to-end using the
dispatch router.
Therefore we can establish a connection between those two services.
This is summarized in the request/response pattern. I was wondering if
there's a library that allows to do this without having to deal with the
details. After searching, I found something close to what I have in mind
(and you replied to the user).
http://qpid.2158936.n2.nabble.com/RPC-over-AMQP-with-Hessian-td5103076.html
Here's an RPC over messaging, (or Request/Reply) implementation by
RabbitMQ, https://www.rabbitmq.com/tutorials/tutorial-six-java.html
There is a simple client/server (i.e. request/response) example included
in the qpid jms examples[1][2]
I will check out the project "https://github.com/ebourg/qpid-hessian"; and
test it out. If there's nothing similar to in the Qpid, it will be nice to
have it.
That looks pretty old, I suspect you will have to tweak things to get it
to work at all.
[1]
https://git1-us-west.apache.org/repos/asf?p=qpid-jms.git;a=blob;f=qpid-jms-examples/src/main/java/org/apache/qpid/jms/example/Client.java;h=482af7954c28d4e99c0bafc7b689e97fe17869b6;hb=HEAD
[2]
https://git1-us-west.apache.org/repos/asf?p=qpid-jms.git;a=blob;f=qpid-jms-examples/src/main/java/org/apache/qpid/jms/example/Server.java;h=ef12d6b6d67fcf654ebb49af9a49e30aad5a61c3;hb=HEAD
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