Package com.google.apphosting.runtime

Class NullRpcPlugin

java.lang.Object

com.google.apphosting.runtime.anyrpc.AnyRpcPlugin

com.google.apphosting.runtime.NullRpcPlugin

public class NullRpcPlugin
extends AnyRpcPlugin

An RPC plugin that does nothing. This is used for the case where the client for EvaluationRuntimeServerInterface and CloneControllerServerInterface is actually in the same process, so there is no RPC.

Constructor Summary

Constructors

Constructor	Description
NullRpcPlugin()

Method Summary

Modifier and Type	Method	Description
void	blockUntilShutdown()	Runs the main loop for the server and waits for the server to shutdown.
void	initialize(int serverPort)	Initializes the plugin, possibly creating any sockets/files/channels/connections needed.
boolean	serverStarted()	Returns true if the server has been started and has not stopped.
void	shutdown()	Performs any actions that are necessary to shut down any clients or servers started from this plugin.
void	startServer(EvaluationRuntimeServerInterface evaluationRuntime, CloneControllerServerInterface cloneController)	Starts the server using the two specified implementations of the RPC-agnostic EvaluationRuntime and CloneController interfaces.
void	stopServer()	Stops the server.
Runnable	traceContextPropagating(Runnable runnable)	Wraps the provided Runnable so as to assure propagation of the tracing context.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NullRpcPlugin

public NullRpcPlugin()

Method Detail

initialize

public void initialize(int serverPort)

Description copied from class: AnyRpcPlugin

Initializes the plugin, possibly creating any sockets/files/channels/connections needed.

Specified by:

initialize in class AnyRpcPlugin

Parameters:

serverPort - the port to listen for RPCs on.

startServer

public void startServer(EvaluationRuntimeServerInterface evaluationRuntime,
                        CloneControllerServerInterface cloneController)

Description copied from class: AnyRpcPlugin

Starts the server using the two specified implementations of the RPC-agnostic EvaluationRuntime and CloneController interfaces.

Specified by:

startServer in class AnyRpcPlugin

Parameters:

evaluationRuntime - the evaluation runtime service implementation

cloneController - the clone controller service implementation

serverStarted

public boolean serverStarted()

Description copied from class: AnyRpcPlugin

Returns true if the server has been started and has not stopped.

Specified by:

serverStarted in class AnyRpcPlugin

blockUntilShutdown

public void blockUntilShutdown()

Description copied from class: AnyRpcPlugin

Runs the main loop for the server and waits for the server to shutdown.

This method MUST be called from the same thread that called AnyRpcPlugin.startServer(EvaluationRuntimeServerInterface, CloneControllerServerInterface).

Specified by:

blockUntilShutdown in class AnyRpcPlugin

stopServer

public void stopServer()

Description copied from class: AnyRpcPlugin

Stops the server.

Specified by:

stopServer in class AnyRpcPlugin

shutdown

public void shutdown()

Description copied from class: AnyRpcPlugin

Performs any actions that are necessary to shut down any clients or servers started from this plugin.

Specified by:

shutdown in class AnyRpcPlugin

traceContextPropagating

public Runnable traceContextPropagating(Runnable runnable)

Description copied from class: AnyRpcPlugin

Wraps the provided Runnable so as to assure propagation of the tracing context.

Specified by:

traceContextPropagating in class AnyRpcPlugin

Parameters:

runnable - the Runnable to wrap

Returns:

a Runnable that sets up propagation of the tracing context and then invokes the original one