Announce Stomperl 0.0.2: Message Queuing And Transaction
December 20th, 2007
Dear all,
I'm glad to announce that Stomperl 0.0.2 is out. You can now check it out at http://stomperl.googlecode.com/svn/tags/0.0.2/ .
Since the first preview version [http://gigix.thoughtworkers.org/2007/12/12/announcement-stomperl-0-0-1], we've made some mentionable progress. The most significant one is the support to message queuing. Message destinations in Stomperl version 0.0.1 were only allowed to be topics. Now they are allowed to be queues as well: destination with its name starting with "queue^" would behave as a queue. (Check out the difference between a topic and a queue from "Enterprise Integration Patterns" [http://www.enterpriseintegrationpatterns.com/].)
Furthermore, Stomperl 0.0.2 supports transaction: messages in a transaction would be send all-or-not. It also supports ACK and ERROR frames. Actually it supports all commands listed in the protocol so far. Although we haven't got any official compatibility test suite yet, I feel it's fairly safe to say that Stomperl is a 100% Stomp compatible broker.
What's next then? I'd like to do some investigation to other Stomp brokers (as well as clients) and do some performance benchmarks. Besides that, I suppose there would be some defects and housecleaning need to be done. Still, any suggestion and feedback would be highly appreciated.
Announcement: Stomperl 0.0.1
December 12th, 2007
Dear all,
Stomperl 0.0.1 (the first preview release) is out.
Stomperl [http://code.google.com/p/stomperl/] is an implementation of Stomp [http://stomp.codehaus.org/] broker with Erlang. That means performance, scalability, reliability and elegance in concurrent programming are our goals. And since Stomp is simple enough, it's a good start point to learn Erlang/OTP programming.
Version 0.0.1 is the first preview release. The main purpose is to gather feedbacks from the community. So far it supports basic elements in Stomp protocol: CONNECT, DISCONNECT, SUBSCRIBE, UNSUBSCRIBE, SEND and RECEIPT. It passes acceptance tests built with both Java and Perl clients. That's why I consider it as "usable" and decide to announce it.
To give Stomperl a try (NOTE: EUnit later than 2.0 beta is required):
- Check it out with Subversion:
svn checkout http://stomperl.googlecode.com/svn/tags/0.0.1/ stomperl-0.0.1 - Kick off the broker:
make startup - Now you can connect to the broker at port 61613. However I suggest you run the test suite first:
make test
What's next? I suppose Stomperl will support full Stomp protocol in its 0.0.2 version, along with a better test coverage. We will do more acceptance test, compatibility test and performance test in the future. But first, any suggestion and feedback would be highly appreciated.
Stomperl: Stomp with Erlang
December 7th, 2007
Stomperl is an attempt to build something not-so-that-non-trivial (in this case, a Stomp server) with Erlang. To kick it off, I stole the server architecture from here and here. Currently it doesn't even support the full protocol: only CONNECT, SUBSCRIBE and SEND commands are supported. But anyway, it's moving forward and I'm learning from it.
To make it run:
make test, which hopefully succeeds.make start, then you'll get an Erlang console.- In the Erlang console,
tcp_server_sup:start_server(). - In another shell console,
make acceptance, which hopefully succeeds.
I created an extremely simple acceptance test with Gozirra.
What's the next? Well, I suppose I'll implement the full protocol, and fix some defects. As a newbie to Erlang, I made and am making stupid mistakes. Welcome to be stupid together with me.
