Package org.apache.hadoop.ipc

Class ProtocolProxy<T>

java.lang.Object

org.apache.hadoop.ipc.ProtocolProxy<T>

public class ProtocolProxy<T>
extends Object

a class wraps around a server's proxy, containing a list of its supported methods. A list of methods with a value of null indicates that the client and server have the same protocol.

Constructor Summary

Constructors

Constructor	Description
ProtocolProxy(Class<T> protocol, T proxy, boolean supportServerMethodCheck)	Constructor

Method Summary

Modifier and Type	Method	Description
T	getProxy()
boolean	isMethodSupported(String methodName, Class<?>... parameterTypes)	Check if a method is supported by the server or not.

Methods inherited from class java.lang.Object

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

Constructor Details

ProtocolProxy

public ProtocolProxy(Class<T> protocol,
 T proxy,
 boolean supportServerMethodCheck)

Constructor

Parameters:

protocol - protocol class

proxy - its proxy

supportServerMethodCheck - If false proxy will never fetch server methods and isMethodSupported will always return true. If true, server methods will be fetched for the first call to isMethodSupported.

Method Details

getProxy

public T getProxy()

isMethodSupported

public boolean isMethodSupported(String methodName,
 Class<?>... parameterTypes)
                          throws IOException

Check if a method is supported by the server or not.

Parameters:

methodName - a method's name in String format

parameterTypes - a method's parameter types

Returns:

true if the method is supported by the server

Throws:

IOException - raised on errors performing I/O.