[zeromq-dev] Just installed zmq and have a question about wiring and running a broker.

[Vineet Jain]

I currently have a large number of python applications on a compute
farm. I was going to try use 0mq for logging and also for
communication between each other. I would like my messaging
architecture to be simple in the beginning. All my python apps would
communicate to one messaging server which would host a global exchange
and multiple queues.

I was hoping that all of my apps could connect to zmq_server which
intern would host the global exchange and queues. From your reply, it
seems like that is not possible.

How would I go about creating a wiring where this is one centralized
messaging server which just creates a global exchange and the clients
are all responsible for the business logic, creating the queues and
pushing and consuming messages.



On Tue, Apr 7, 2009 at 9:47 AM, Martin Sustrik <sustrik at fastmq.com> wrote:
> Hi Vineet,
>
> Currently, the chatroom and zmq_server have to be separate processes.
> However, as quite a lot of people complained about this restriction, we
> would like to introduce two separate messaging models in post-0.6 future.
>
> The idea is that there'll be layer 1 API ("0MQ sockets") that would
> basically work as POSIX sockets adding all the fancy stuff:
> message-orientation, high performance, queueing, different transport
> protocols, multicast, load balancing, on-disk offload, auto-reconnect, wide
> OS and language support etc. No zmq_server and no symbolic name resolving at
> layer 1:
>
> int s = zmq::socket ();
> zmq::bind (s, "zmq.tcp://192.168.0.115:5555");
> message_t msg;
> zmq::receive (&msg);
>
> or:
>
> int s = zmq::socket ();
> zmq::connect (s, "zmq.tcp://192.168.0.115:5555");
> message_t msg (data, size);
> zmq::send (s, msg);
>
> Then there'll be layer 2 API ("0MQ for enterprise") with current API,
> zmq_server, symbolic name resolving, configuration stored in a directory
> service etc.
>
> I expect there are several people on the mailing list who would benefit from
> "0MQ sockets". If so, let us know your requirements and use cases so that we
> can incorporate it into the design early on. Also, any help with design
> and/or implementation would be welcome.
>
> Martin
>
> Vineet Jain wrote:
>>
>> I'm working with the python library and looked at the Chat Application.
>>
>> Can the chat application be setup so that the zmq_server actually
>> hosts the exchange and queue? I want the chat server, the prompt and
>> display to not only use the zmq_server for directory services but also
>> be source for messages and the queue to push messages to.
>> _______________________________________________
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>
>