Atmosphere + Jersey: How do I have multiple broadcasters?

Question

I have a working Jersey/Atmosphere/Guice application which has two Atmosphere Resources. The first is pretty much a clone of the example chat application:

Answer 1

Just inject Broadcaster using the @PathParam annotation:

private
@PathParam("topic")
Broadcaster topic;

You can also use the @Context annotation. Hope that help.

-- Jeanfrancois

Answer 2

In the resource, suspend using the channel you want (the 'true' parameter to lookup() forces the channel to be created if it doesn't exist):

@Suspend( contentType = MediaType.APPLICATION_JSON, period = MAX_SUSPEND_MSEC )
@GET
public Broadcastable suspend( @Context final BroadcasterFactory factory )
{
    return new Broadcastable( factory.lookup( MY_CHANNEL, true ) );
}

In the other code, which can be pretty much anywhere, broadcast to that channel:

Broadcaster broadcaster = BroadcasterFactory.getDefault().lookup( MY_CHANNEL );
if( broadcaster != null ) {
    broadcaster.broadcast( message );
}

If you're going to be broadcasting from a resource method, you can annotate it instead (as shown in ChatResource's broadcast() method).