Class LatencyRecordingHandler

java.lang.Object

org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.ContainerLifeCycle

org.eclipse.jetty.server.Handler.Abstract

org.eclipse.jetty.server.Handler.AbstractContainer

org.eclipse.jetty.server.Handler.Wrapper

org.eclipse.jetty.server.handler.EventsHandler

org.eclipse.jetty.server.handler.LatencyRecordingHandler

All Implemented Interfaces:

Handler, Handler.Container, Handler.Singleton, Request.Handler, Container, Destroyable, Dumpable, Dumpable.DumpableContainer, LifeCycle, Invocable

public abstract class LatencyRecordingHandler
extends EventsHandler

A Handler that helps recording the total latency of the requests executed by the wrapped handler.

The latency reported by onRequestComplete(String, long) is the delay between when the request arrived to a connector until the completion of that request.

Nested Class Summary

Nested classes/interfaces inherited from class Handler.Abstract

Handler.Abstract.NonBlocking

Nested classes/interfaces inherited from class AbstractLifeCycle

AbstractLifeCycle.AbstractLifeCycleListener, AbstractLifeCycle.StopException

Nested classes/interfaces inherited from interface Container

Container.InheritedListener, Container.Listener

Nested classes/interfaces inherited from interface Dumpable

Dumpable.DumpableContainer, Dumpable.DumpAppendable

Nested classes/interfaces inherited from interface Handler

Handler.Abstract, Handler.AbstractContainer, Handler.Collection, Handler.Container, Handler.Sequence, Handler.Singleton, Handler.Wrapper

Nested classes/interfaces inherited from interface Invocable

Invocable.Callable, Invocable.InvocationType, Invocable.ReadyTask, Invocable.Task

Nested classes/interfaces inherited from interface LifeCycle

LifeCycle.Listener

Nested classes/interfaces inherited from interface Request.Handler

Request.Handler.AbortException

Field Summary

Fields inherited from class AbstractLifeCycle

FAILED, STARTED, STARTING, STOPPED, STOPPING

Fields inherited from interface Dumpable

LEGEND

Fields inherited from interface Invocable

__nonBlocking, NOOP

Constructor Summary

Constructors

Constructor	Description
LatencyRecordingHandler()
LatencyRecordingHandler(Handler handler)

Method Summary

Modifier and Type	Method	Description
protected final void	onComplete(Request request, int status, HttpFields headers, Throwable failure)	Invoked when the request and response processing are complete, just before the request and response will be recycled (i.e. after the Runnable return from HttpChannel.onRequest(MetaData.Request) has returned and the Callback passed to Request.Handler.handle(Request, Response, Callback) has been completed).
protected abstract void	onRequestComplete(String requestId, long durationInNs)	Called back for each completed request with its execution's latency.

Methods inherited from class EventsHandler

handle, onAfterHandling, onBeforeHandling, onComplete, onRequestRead, onResponseBegin, onResponseTrailersComplete, onResponseWrite, onResponseWriteComplete

Methods inherited from class Handler.Wrapper

getHandler, getInvocationType, setHandler

Methods inherited from class Handler.AbstractContainer

findContainerOf, getDescendant, getDescendants, isDynamic, setDynamic, setServer

Methods inherited from class Handler.Abstract

destroy, doStart, doStop, getServer

Methods inherited from class ContainerLifeCycle

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

Methods inherited from class AbstractLifeCycle

getEventListeners, getState, getState, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, setEventListeners, start, stop, toString

Methods inherited from class Object

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

Methods inherited from interface Container

getCachedBeans, getEventListeners

Methods inherited from interface Destroyable

destroy

Methods inherited from interface Dumpable

dumpSelf

Methods inherited from interface Dumpable.DumpableContainer

isDumpable

Methods inherited from interface Handler

getServer, setServer

Methods inherited from interface Handler.Container

getContainer, getDescendant, getDescendants, getDescendants

Methods inherited from interface Handler.Singleton

getHandlers, getTail, insertHandler, setHandler

Methods inherited from interface LifeCycle

addEventListener, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeEventListener, start, stop

Constructor Details

LatencyRecordingHandler

public LatencyRecordingHandler()

LatencyRecordingHandler

public LatencyRecordingHandler(Handler handler)

Method Details

onComplete

protected final void onComplete(Request request,
 int status,
 HttpFields headers,
 Throwable failure)

Description copied from class: EventsHandler

Invoked when the request and response processing are complete, just before the request and response will be recycled (i.e. after the Runnable return from HttpChannel.onRequest(MetaData.Request) has returned and the Callback passed to Request.Handler.handle(Request, Response, Callback) has been completed).

Overrides:

onComplete in class EventsHandler

Parameters:

request - the request object. The read(), demand(Runnable) and fail(Throwable) methods must not be called by the listener.

status - the response status.

headers - the immutable fields of the response object.

failure - if there was a failure to complete.

onRequestComplete

protected abstract void onRequestComplete(String requestId,
 long durationInNs)

Called back for each completed request with its execution's latency.

Parameters:

requestId - the ID of the request

durationInNs - the duration in nanoseconds of the completed request