org.opendaylight.controller.md.sal.dom.api

Interface DOMRpcService

All Superinterfaces:

BrokerService, DOMService

public interface DOMRpcService
extends DOMService

A DOMService which allows clients to invoke RPCs. The conceptual model of this service is that of a dynamic router, where the set of available RPC services can change dynamically. The service allows users to add a listener to track the process of RPCs becoming available.

Method Summary

Methods

Modifier and Type	Method and Description
com.google.common.util.concurrent.CheckedFuture<DOMRpcResult,DOMRpcException>	invokeRpc(SchemaPath type, NormalizedNode<?,?> input) Initiate invocation of an RPC.
<T extends DOMRpcAvailabilityListener> org.opendaylight.yangtools.concepts.ListenerRegistration<T>	registerRpcListener(T listener) Register a DOMRpcAvailabilityListener with this service to receive notifications about RPC implementations becoming (un)available.

Method Detail

invokeRpc

@Nonnull
com.google.common.util.concurrent.CheckedFuture<DOMRpcResult,DOMRpcException> invokeRpc(@Nonnull
                                                                                              SchemaPath type,
                                                                                              @Nullable
                                                                                              NormalizedNode<?,?> input)

Initiate invocation of an RPC. This method is guaranteed to not block on any external resources.

Parameters:

type - SchemaPath of the RPC to be invoked

input - Input arguments, null if the RPC does not take any.

Returns:

A CheckedFuture which will return either a result structure, or report a subclass of DOMRpcException reporting a transport error.

registerRpcListener

@Nonnull
<T extends DOMRpcAvailabilityListener> org.opendaylight.yangtools.concepts.ListenerRegistration<T> registerRpcListener(@Nonnull
                                                                                                                             T listener)

Register a DOMRpcAvailabilityListener with this service to receive notifications about RPC implementations becoming (un)available. The listener will be invoked with the current implementations reported and will be kept uptodate as implementations come and go. Users should note that using a listener does not necessarily mean that invokeRpc(SchemaPath, NormalizedNode) will not report a failure due to DOMRpcImplementationNotAvailableException and need to be ready to handle it. Implementations are encouraged to take reasonable precautions to prevent this scenario from occurring.

Parameters:

listener - DOMRpcAvailabilityListener instance to register

Returns:

A DOMRpcAvailabilityListenerRegistration representing this registration. Performing a DOMRpcAvailabilityListenerRegistration#close() will cancel it. Returned object is guaranteed to be non-null.