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Re: [ecf-dev] Sharing events peer-to-peer
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Hi Martin,
On 12/6/2010 1:40 PM, Martin Petzold wrote:
Hi Scott,
let's say I have x nodes and would like to have them sharing their
events (handling and posting). For best performance this should work
in some kind of peer-to-peer mode. Is this somehow possible?
Yes, it is.
I'm not that sure what shared objects really do...
The short story: shared objects are arbitrary objects that are
replicated into a pub/sub 'group' (i.e. a set of connected
containers...i.e. peers). A given shared object instance has a 'copy'
or 'replica' of arbitrary code and state...typically replicated to all
containers connected in a group. The replicas can then use messaging
primitives (provided by the container they are in) to communicate...and
synchronize any replicated state changes.
At the moment I don't know where to register the
"ecf.jms.activemq.tcp.manager" and where the
"ecf.jms.activemq.tcp.client" container.
Note the distributed event admin work is not directly related to ECF
remote services. That is, the distributed eventadmin example
implementation registers an EventAdmin service...but this is an
implementation of the OSGi EventAdmin spec...it's not directly related
to the OSGi remote services at all.
Don't know if you've seen it, but there's an architecture diagram of the
distributed event admin (showing the replicated/shared object usage)
here: http://wiki.eclipse.org/Distributed_EventAdmin_Service
Scott
