GetRegistry get a registry by scheme.

RegisterDriver register a new Registry could be: conf.Configurable,and will be lazy loaded in server.Apply function.

TargetToOptions parse resolver target to DialOptions Deprecated: registry driver should provide a function to instead.

DialOptions is the options for client dial when using registry resolver.

ServiceInfo is the service information.

DialOption is the options for client dial when using registry resolver.

Driver is the registry driver interface,it builds a registry for some kind of service discovery and resolver for grpc client.

Registry provides an interface for service discovery.