Some time back I started a discovery agent that used SLP and was optionally backed by ApacheDS LDAP server. SLP is a nifty little protocol because it allows you to attach attributes to the service registration and service queries. So if a broker was configured to register with the attribute color="blue, red, green", other brokers could discover this broker with a query for "red" or "red and green", etc. SLP can be done using multicast in a sort of peer to peer fashion but also has provisions for a Directory Agent where the discovery agents can talk only to a centralized server or list of servers. In my case I had a standalone SLP Directory Agent configured, but it could also be embedded in a broker or all brokers via spring xml.
The idea was that a broker could be configured with *any* attributes that were relevant to it such as geographic location, capacity, or business function, and other brokers would "discover" other brokers matching attributes they were interested in. This sounded similar to what you are looking for so if you are interested or want more details let me know! Chris -- Chris Custine My Blog :: http://blog.organicelement.com Apache ServiceMix :: http://servicemix.apache.org Apache Directory Server :: http://directory.apache.org On Thu, Aug 21, 2008 at 1:29 AM, Eric-AWL <[EMAIL PROTECTED]>wrote: > > In fact, I imagine splitting my architecture in "local islets" and having a > similar multicast mechanism in each "islet". > Islets are distributed over two sites and each have a sort of HA directory > server which answers to discovery requests from whatever broker, by sending > multicast request on their own islet. > Directory servers have a fixed IP address and are known by brokers. > > You can look at my other request "Large networks of brokers, dynamically > included destinations and temporary queues" to better see what I mean. > > Eric-AWL > > > James.Strachan wrote: > > > > 2008/8/20 Powers, Matthew <[EMAIL PROTECTED]>: > >> What about ZeroConf? > > > > Thats already supported along with multicast, LDAP and http > > http://activemq.apache.org/discovery.html > > > > -- > > James > > ------- > > http://macstrac.blogspot.com/ > > > > Open Source Integration > > http://open.iona.com > > > > > > -- > View this message in context: > http://www.nabble.com/How-to-develop-his-own-DiscoveryAgent---tp19070432p19083841.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > >
