Hi Maarten
> > I'm running a cluster of webservers and I'd like to write certain events > > (logins, logouts, etc.) to a central log. To do that, I'd like the > > webservers to send event messages to a broker. A logging machine should > > periodically fetch, process, aggregate and write those events to a log. For pure logging purposes, I would personally use syslog over amq, but you can use amq as well. > > > 1) Building ActiveMQ with Maven takes forever. I cancelled it after ~2 hours > > of running unit tests and grabbed myself the binary. > I doubt there is any good reason to roll your own for a java-application > any way? Yes, there is no need to build it ... just grab the newest snapshot http://people.apache.org/repo/m2-snapshot-repository/org/apache/activemq/apache-activemq/ > > 2) ActiveMQ seems to block when there's no message in a queue. I was using > > the Stomp PHP API (which doesn't handle this gracefully) and the REST > > interface (which seems ignore the timeout GET param). Isn't there an easy > > way for polling a queue? > You could adjust the code to create a non blocking stream and use > stream_select and such, rather than plain old fgets/fread. The > Stomp-class is quite trivial to read and adjust (you only need to adjust > the readFrame-method). This is on my todo list (http://stomp.codehaus.org/PHP#PHP-TODO) and I hope I will have it soon. Of course, any contribution is more than welcomed. > > > 3) Although I can see pending messages in a queue in the web console, the > > REST / Stomp APIs block when trying to fetch them. Any ideas here? > I'm not sure what you mean by 'block' ? > > > 4) Why aren't messages automatically deleted from the queue, when I fetch > > them (subscribe in Stomp, GET in REST)? > The php-stomp implementation defaults to client-acknowledgement when you > subscribe. So you have to explicitly ack(nowledge) your message's (the > id you need is in the headers of the received frame) and/or you could > adjust the code Stomp-class to not set the acknowledgement to client. > You only need to remove a single line for that in subscribe(). You can easily modify this behavior with the headers, for example $conn->subscribe("/queue/test", array("ack"=>"auto")); I'll make this configurable on the class level and document it. Cheers -- Dejan Bosanac www.scriptinginjava.net
