org.apache.hadoop.ipc

Class RpcClientUtil

java.lang.Object

org.apache.hadoop.ipc.RpcClientUtil

public class RpcClientUtil
extends Object

This class maintains a cache of protocol versions and corresponding protocol signatures, keyed by server address, protocol and rpc kind. The cache is lazily populated.

Constructor Summary

Constructors

Constructor and Description
RpcClientUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	isMethodSupported(Object rpcProxy, Class<?> protocol, RPC.RpcKind rpcKind, long version, String methodName) Returns whether the given method is supported or not.

Methods inherited from class java.lang.Object

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

Constructor Detail

RpcClientUtil

public RpcClientUtil()

Method Detail

isMethodSupported

public static boolean isMethodSupported(Object rpcProxy,
                        Class<?> protocol,
                        RPC.RpcKind rpcKind,
                        long version,
                        String methodName)
                                 throws IOException

Returns whether the given method is supported or not. The protocol signatures are fetched and cached. The connection id for the proxy provided is re-used.

Parameters:

rpcProxy - Proxy which provides an existing connection id.

protocol - Protocol for which the method check is required.

rpcKind - The RpcKind for which the method check is required.

version - The version at the client.

methodName - Name of the method.

Returns:

true if the method is supported, false otherwise.

Throws:

IOException