getting all consumer addresses for an event bus

[ad...@cs.miami.edu]

Hi,

Given an instance of an EventBus, is there any way to obtain a list of all Strings that represent all addresses which have consumer handlers?

I am working on adding a function to help discover which services are on the bus.

When I create a consumer, I know I can get an instance of MessageConsumer, and from there grab the address, and put it in a list.  But I am looking for a solution that will do it live, regardless of if the info was captured initially when the consumer was registered.

Thanks,

-Adam

[Tim Fox]

I think a better way to implement this would be to create a "Service Registry" verticle which listens on the event by bus on a well known address.

When a service starts it can register itself with the registry and when it stops it can unregister itself.

If a client wants to know which services are registered it can then just ask the service registry.

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[Ian Andrews]

I have used the pattern that Tim describes quite successfully.  It is simple to implement, even if you want to have multiple copies of the same service.

[Arnaud Estève]

I did too, in the past. Such an implementation along with vertx-service-proxy could be interesting to share. Maybe something like :

register(String name);

unregister(String name);

services(Handler<<List<String>>> subscribersHandler);

And maybe even extend AbstractVerticle to have a AbstractServiceVerticle which automatically registers/unregisters when it starts/stops with its className + deploymentId (or UUID).

wdyt ? Is this the pattern you've come up with ?