Package dk.netarkivet.viewerproxy

Class WebProxy

java.lang.Object

org.mortbay.component.AbstractLifeCycle

org.mortbay.jetty.handler.AbstractHandler

org.mortbay.jetty.handler.DefaultHandler

dk.netarkivet.viewerproxy.WebProxy

All Implemented Interfaces:

URIResolverHandler, org.mortbay.component.LifeCycle, org.mortbay.jetty.Handler

public class WebProxy
extends org.mortbay.jetty.handler.DefaultHandler
implements URIResolverHandler

The WebProxy is the ONLY viewerproxy class that interfaces with the Jetty classes. This class packages all requests up nicely as calls to uriResolver.lookup().

In particular, it handles the control of the Jetty server that the Proxy server builds on.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	WebProxy.HttpRequest	A wrapper around the Jetty HttpRequest, giving the simple Request interface used in our URIResolvers.
static class	WebProxy.HttpResponse	A wrapper around the Jetty HttpResponse, giving the simple Response interface used in our URIResolvers.

Nested classes/interfaces inherited from interface org.mortbay.component.LifeCycle

org.mortbay.component.LifeCycle.Listener

Field Summary

Fields inherited from class org.mortbay.jetty.handler.AbstractHandler

_string

Fields inherited from class org.mortbay.component.AbstractLifeCycle

_listeners

Fields inherited from interface org.mortbay.jetty.Handler

ALL, DEFAULT, ERROR, FORWARD, INCLUDE, REQUEST

Constructor Summary

Constructors

Constructor	Description
WebProxy(URIResolver uriResolver)	Initialises a new web proxy, which delegates lookups to the given uri resolver.

Method Summary

Modifier and Type	Method	Description
void	handle(String target, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, int dispatch)	Handle an HTTP request.
void	kill()	Shut down this server.
void	setURIResolver(URIResolver ur)	Sets the current URIResolver.

Methods inherited from class org.mortbay.jetty.handler.DefaultHandler

getServeIcon, setServeIcon

Methods inherited from class org.mortbay.jetty.handler.AbstractHandler

destroy, doStart, doStop, getServer, setServer, toString

Methods inherited from class org.mortbay.component.AbstractLifeCycle

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mortbay.component.LifeCycle

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

Constructor Detail

WebProxy

public WebProxy(URIResolver uriResolver)

Initialises a new web proxy, which delegates lookups to the given uri resolver. The WebProxy will start listening on port given in settings.

Parameters:

uriResolver - The uriResolver used to handle lookups in the proxy.

Throws:

IOFailure - on trouble starting the proxy server.

ArgumentNotValid - on null uriResolver.

Method Detail

setURIResolver

public void setURIResolver(URIResolver ur)

Sets the current URIResolver.

Specified by:

setURIResolver in interface URIResolverHandler

Parameters:

ur - The resolver to handle lookups.

Throws:

ArgumentNotValid - on null uriResolver.

handle

public void handle(String target,
                   javax.servlet.http.HttpServletRequest request,
                   javax.servlet.http.HttpServletResponse response,
                   int dispatch)

Handle an HTTP request. Overrides default behaviour of Jetty. This will forward the URI and response to the wrapped URI resolver. Note that the server will NOT force the return value to be the one returned by the uri resolver, rather it will use the one the uri resolver has set in the response object.

Exceptions will generate an internal server error-page with the details.

Specified by:

handle in interface org.mortbay.jetty.Handler

Overrides:

handle in class org.mortbay.jetty.handler.DefaultHandler

Parameters:

target - URL or name for request. Not used

request - The original request, including URL

response - The object that receives the result

kill

public void kill()

Shut down this server.