Package org.eclipse.jetty.server.handler

Class AsyncDelayHandler

java.lang.Object

org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.ContainerLifeCycle

org.eclipse.jetty.server.handler.AbstractHandler

org.eclipse.jetty.server.handler.AbstractHandlerContainer

org.eclipse.jetty.server.handler.HandlerWrapper

org.eclipse.jetty.server.handler.AsyncDelayHandler

All Implemented Interfaces:

Handler, HandlerContainer, org.eclipse.jetty.util.component.Container, org.eclipse.jetty.util.component.Destroyable, org.eclipse.jetty.util.component.Dumpable, org.eclipse.jetty.util.component.LifeCycle

public class AsyncDelayHandler
extends HandlerWrapper

A handler wrapper that provides the framework to asynchronously delay the handling of a request. While it uses standard servlet API for asynchronous servlets, it adjusts the dispatch type of the request so that it does not appear to be asynchronous during the delayed dispatch.

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.jetty.server.handler.AbstractHandler

AbstractHandler.ErrorDispatchHandler

Nested classes/interfaces inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.AbstractLifeCycle.AbstractLifeCycleListener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.Container

org.eclipse.jetty.util.component.Container.InheritedListener, org.eclipse.jetty.util.component.Container.Listener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.LifeCycle

org.eclipse.jetty.util.component.LifeCycle.Listener

Field Summary

Fields

Modifier and Type	Field	Description
static String	AHW_ATTR

Fields inherited from class org.eclipse.jetty.server.handler.HandlerWrapper

_handler

Fields inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

FAILED, RUNNING, STARTED, STARTING, STOPPED, STOPPING

Fields inherited from interface org.eclipse.jetty.util.component.Dumpable

KEY

Constructor Summary

Constructors

Constructor	Description
AsyncDelayHandler()

Method Summary

Modifier and Type	Method	Description
protected void	delayHandling(Request request, AsyncContext context)	Called to indicate that a requests handling is being delayed/ The implementation should arrange for context.dispatch() to be called when the request should be handled.
protected void	endHandling(Request request)	Called to indicated the handling of the request is ending.
void	handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response)	Handle a request.
protected boolean	startHandling(Request request, boolean restart)	Called to indicate that a request has been presented for handling

Methods inherited from class org.eclipse.jetty.server.handler.HandlerWrapper

destroy, expandChildren, getHandler, getHandlers, insertHandler, setHandler

Methods inherited from class org.eclipse.jetty.server.handler.AbstractHandlerContainer

doShutdown, expandHandler, findContainerOf, getChildHandlerByClass, getChildHandlers, getChildHandlersByClass, setServer

Methods inherited from class org.eclipse.jetty.server.handler.AbstractHandler

doError, doStart, doStop, getServer

Methods inherited from class org.eclipse.jetty.util.component.ContainerLifeCycle

addBean, addBean, addBean, addEventListener, addManaged, contains, dump, dump, dump, dump, dump, dumpBeans, dumpObject, dumpObjects, dumpStdErr, dumpThis, getBean, getBeans, getBeans, getContainedBeans, getContainedBeans, isAuto, isManaged, isUnmanaged, manage, removeBean, removeBeans, removeEventListener, setBeans, setStopTimeout, start, stop, unmanage, updateBean, updateBean, updateBeans

Methods inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

addLifeCycleListener, getState, getState, getStopTimeout, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, stop, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.jetty.util.component.LifeCycle

addLifeCycleListener, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, stop

Field Detail

AHW_ATTR

public static final String AHW_ATTR

See Also:

Constant Field Values

Constructor Detail

AsyncDelayHandler

public AsyncDelayHandler()

Method Detail

handle

public void handle(String target,
                   Request baseRequest,
                   HttpServletRequest request,
                   HttpServletResponse response)
            throws IOException,
                   ServletException

Description copied from interface: Handler

Handle a request.

Specified by:

handle in interface Handler

Overrides:

handle in class HandlerWrapper

Parameters:

target - The target of the request - either a URI or a name.

baseRequest - The original unwrapped request object.

request - The request either as the Request object or a wrapper of that request. The HttpConnection.getCurrentConnection().getHttpChannel().getRequest() method can be used access the Request object if required.

response - The response as the Response object or a wrapper of that request. The HttpConnection.getCurrentConnection().getHttpChannel().getResponse() method can be used access the Response object if required.

Throws:

IOException - if unable to handle the request or response processing

ServletException - if unable to handle the request or response due to underlying servlet issue

startHandling

protected boolean startHandling(Request request,
                                boolean restart)

Called to indicate that a request has been presented for handling

Parameters:

request - The request to handle

restart - True if this request is being restarted after a delay

Returns:

True if the request should be handled now

delayHandling

protected void delayHandling(Request request,
                             AsyncContext context)

Called to indicate that a requests handling is being delayed/ The implementation should arrange for context.dispatch() to be called when the request should be handled. It may also set timeouts on the context.

Parameters:

request - The request to be delayed

context - The AsyncContext of the delayed request

endHandling

protected void endHandling(Request request)

Called to indicated the handling of the request is ending. This is only the end of the current dispatch of the request and if the request is asynchronous, it may be handled again.

Parameters:

request - The request