com.sun.grizzly
Class RoundRobinSelectorHandler

java.lang.Object
  com.sun.grizzly.TCPSelectorHandler
      com.sun.grizzly.RoundRobinSelectorHandler

All Implemented Interfaces:

ComplexSelectorHandler, Handler, LinuxSpinningWorkaround, SelectorHandler, PendingIOhandler, AttributeHolder, Copyable, SupportStateHolder<State>

public class RoundRobinSelectorHandler
extends TCPSelectorHandler
implements ComplexSelectorHandler

A SelectorHandler handles all java.nio.channels.Selector operations. One or more instance of a Selector are handled by SelectorHandler. The logic for processing of SelectionKey interest (OP_ACCEPT,OP_READ, etc.) is usually defined using an instance of SelectorHandler. This class represents a TCP implementation of a SelectorHandler, which handles "accept" events by registering newly accepted connections to auxiliary Controllers in a round robin fashion.

Author:

Alexey Stashok

Field Summary

Fields inherited from class com.sun.grizzly.TCPSelectorHandler

asyncQueueReader, asyncQueueWriter, attributes, connectorInstanceHandler, inet, instanceHandler, isShutDown, linger, logger, opToRegister, port, receiveBufferSize, reuseAddress, role, selectionKeyHandler, selector, selectTimeout, sendBufferSize, serverSocket, serverSocketChannel, serverTimeout, socketTimeout, ssBackLog, stateHolder, tcpNoDelay, threadPool

Constructor Summary

RoundRobinSelectorHandler()

RoundRobinSelectorHandler(ReadController[] rrControllers)

Method Summary

void	addProtocolSupport(Controller.Protocol customProtocol) Add custom protocol support
void	copyTo(Copyable copy)
ReadController	nextController() Return next aux.
boolean	onAcceptInterest(SelectionKey key, Context context) Handle OP_ACCEPT.
void	shutdown() Shuntdown this instance by closing its Selector and associated channels.
boolean	supportsClient(SelectorHandler selectorHandler) Checks if given SelectorHandler is supported on client-side by RoundRobinSelectorHandler
boolean	supportsProtocol(Controller.Protocol protocol) Checks if protocol is supported by RoundRobinSelectorHandler

Methods inherited from class com.sun.grizzly.TCPSelectorHandler

acceptWithoutRegistration, acquireConnectorHandler, addPendingIO, addPendingKeyCancel, boolean2Role, closeChannel, configureChannel, connect, getAsyncQueueReader, getAsyncQueueWriter, getAttribute, getAttributes, getConnectorInstanceHandlerDelegate, getInet, getLinger, getLogger, getPendingIOlimitPerThread, getPort, getPortLowLevel, getPreferredSelectionKeyHandler, getProtocolChainInstanceHandler, getRole, getSelectableChannel, getSelectionKeyHandler, getSelector, getSelectTimeout, getServerTimeout, getSocketTimeout, getSpinRate, getSsBackLog, getStateHolder, getThreadPool, invokeAsyncQueueReader, invokeAsyncQueueWriter, invokeCallbackHandler, isFinishIOUsingCurrentThread, isOpen, isReuseAddress, isTcpNoDelay, keyFor, keys, onConnectInterest, onConnectOp, onReadInterest, onWriteInterest, pause, pollContext, postSelect, preSelect, processPendingOperations, protocol, register, register, releaseConnectorHandler, removeAttribute, resetSpinCounter, resume, select, setAttribute, setAttributes, setFinishIOUsingCurrentThread, setInet, setLinger, setLogger, setMaxAcceptRetries, setPendingIOlimitPerThread, setPort, setProtocolChainInstanceHandler, setReceiveBufferSize, setReuseAddress, setRole, setSelectionKeyHandler, setSelector, setSelectTimeout, setSendBufferSize, setServerTimeout, setSocketTimeout, setSsBackLog, setTcpNoDelay, setThreadPool, workaroundSelectorSpin

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sun.grizzly.SelectorHandler

acceptWithoutRegistration, acquireConnectorHandler, closeChannel, configureChannel, getAsyncQueueReader, getAsyncQueueWriter, getPreferredSelectionKeyHandler, getProtocolChainInstanceHandler, getSelectionKeyHandler, getSelector, getThreadPool, isOpen, keyFor, keys, onConnectInterest, onReadInterest, onWriteInterest, pause, postSelect, preSelect, protocol, register, register, releaseConnectorHandler, resume, select, setProtocolChainInstanceHandler, setSelectionKeyHandler, setSelector, setThreadPool

Methods inherited from interface com.sun.grizzly.util.AttributeHolder

getAttribute, getAttributes, removeAttribute, setAttribute, setAttributes

Methods inherited from interface com.sun.grizzly.util.SupportStateHolder

getStateHolder

Methods inherited from interface com.sun.grizzly.tcp.PendingIOhandler

addPendingIO, addPendingKeyCancel

Constructor Detail

RoundRobinSelectorHandler

public RoundRobinSelectorHandler()

RoundRobinSelectorHandler

public RoundRobinSelectorHandler(ReadController[] rrControllers)

Method Detail

copyTo

public void copyTo(Copyable copy)

Specified by:

copyTo in interface Copyable

Overrides:

copyTo in class TCPSelectorHandler

onAcceptInterest

public boolean onAcceptInterest(SelectionKey key,
                                Context context)
                         throws IOException

Description copied from class: TCPSelectorHandler

Handle OP_ACCEPT.

Specified by:

onAcceptInterest in interface SelectorHandler

Overrides:

onAcceptInterest in class TCPSelectorHandler

Parameters:

key - SelectionKey

context - Context

Returns:

always returns false

Throws:

IOException

addProtocolSupport

public void addProtocolSupport(Controller.Protocol customProtocol)

Add custom protocol support

Parameters:

customProtocol - custom Controller.Protocol

supportsProtocol

public boolean supportsProtocol(Controller.Protocol protocol)

Checks if protocol is supported by RoundRobinSelectorHandler

Specified by:

supportsProtocol in interface ComplexSelectorHandler

Parameters:

protocol - Network protocol name

Returns:

true if protocol is supported, false otherwise

supportsClient

public boolean supportsClient(SelectorHandler selectorHandler)

Checks if given SelectorHandler is supported on client-side by RoundRobinSelectorHandler

Specified by:

supportsClient in interface ComplexSelectorHandler

Parameters:

selectorHandler - SelectorHandler

Returns:

true if selectorHandler is supported, false otherwise

nextController

public ReadController nextController()

Return next aux. ReadController to process an accepted connection

Specified by:

nextController in interface ComplexSelectorHandler

Returns:

next aux. ReadController

shutdown

public void shutdown()

Description copied from class: TCPSelectorHandler

Shuntdown this instance by closing its Selector and associated channels.

Specified by:

shutdown in interface SelectorHandler

Overrides:

shutdown in class TCPSelectorHandler