Package io.servicetalk.client.api
Interface ServiceDiscoverer<UnresolvedAddress,ResolvedAddress,E extends ServiceDiscovererEvent<ResolvedAddress>>
- Type Parameters:
UnresolvedAddress
- The type of address before resolution.ResolvedAddress
- The type of address after resolution.E
- Type ofServiceDiscovererEvent
s published fromdiscover(Object)
.
- All Superinterfaces:
AsyncCloseable
,ListenableAsyncCloseable
public interface ServiceDiscoverer<UnresolvedAddress,ResolvedAddress,E extends ServiceDiscovererEvent<ResolvedAddress>>
extends ListenableAsyncCloseable
Represents the interaction pattern with a service discovery system. It is assumed that once
discover(Object)
is called that the service discovery system will push data updates or implementations of this interface will poll for
data updates. Changes in the available hosts will be communicated via the resulting Publisher
.-
Method Summary
Modifier and TypeMethodDescriptiondiscover
(UnresolvedAddress address) Subscribe to the service discovery system for changes in the availableServiceDiscoverer
associated withaddress
.Methods inherited from interface io.servicetalk.concurrent.api.AsyncCloseable
closeAsync, closeAsyncGracefully
Methods inherited from interface io.servicetalk.concurrent.api.ListenableAsyncCloseable
onClose, onClosing
-
Method Details
-
discover
Subscribe to the service discovery system for changes in the availableServiceDiscoverer
associated withaddress
.In general a call to this method will continue to discover changes related to
address
until thePublisherSource.Subscription
corresponding to the return value is cancelled viaCancellable.cancel()
or there are no more changes to publish.- Parameters:
address
- the service address to discover. Examples of what this address maybe are:- hostname/port (e.g. InetAddress)
- service name
- it may be a list of attributes which describe the service attributes to resolve
- something else
- Returns:
- a
Publisher
that represents a stream of events from the service discovery system.
-