Registry Development

[tcunning]

I've got a branch going for registry development, mainly incorporating JGroups for registering services and passing exchanges :

https://github.com/cunningt/core/tree/jgroups-registry

The branch includes a small demo that shows registration of services, unregistration, and very very basic exchange passing.    Note - a prerequisite to this is that multicast works, so make sure that if you have a software firewall running on your machine, turn it off/alter your permissions so that multicast works :

Instructions :

Open a terminal window

cd core/registry

./demo.sh

Open a second terminal window

cd core/registry

./demo.sh

In window 1, register a service

[(r)egister/(u)nregister/(e)xchange <service>- r foo

In window 2, register a service, create an exchange, unregister the service

[(r)egister/(u)nregister/(e)xchange <service>- r bar
[(r)egister/(u)nregister/(e)xchange <service>- e foo
[(r)egister/(u)nregister/(e)xchange <service>- u bar

[tfennelly]

Hey Tom.... can you outline the plans for how the registry will be used in SwitchYard.  What is it responsible for?  How will it be used etc?

[tcunning]

I'm just working on the runtime registry, so it's just an implementation of org.switchyard.spi.ServiceRegistry.

I'm interested in :

- the visibility of remote services in the local registry (i.e. a call to registry.getServices() or registry.getServices(QName serviceName) will return both local and remote services)

- the ability to create an exchange for a remote service

- the ability for the exchanges to send messages that are passed to the remote service

There's  a number of different ways that could be implemented - I'm using  JGroups, but it could be done different  for SwitchYard.