Package net.targetr.wtm3.net.http.proxy.cache

Class CachingProxy

java.lang.Object

net.targetr.wtm3.net.http.proxy.Proxy

net.targetr.wtm3.net.http.proxy.cache.CachingProxy

public class CachingProxy
extends Proxy

A proxy that caches responses from target servers to avoid repeated network requests. Extends the basic Proxy functionality by checking a local cache before sending a request.

Constructor Summary

Constructors

Constructor	Description
CachingProxy(HttpRequest httpReq, String target, long maxAgeMillis)	Creates a new caching proxy.

Method Summary

Modifier and Type	Method	Description
HttpResponse	getResponse()	Makes the connection, sends request and returns a ProxyResponse object suitable for returning the proxied response to the client.
protected ProxyResponse	makeResponse()	Creates a ProxyResponse to stream the response back.

Methods inherited from class net.targetr.wtm3.net.http.proxy.Proxy

getRequest, getTarget, getTargetConnection

Methods inherited from class java.lang.Object

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

Constructor Details

CachingProxy

public CachingProxy(HttpRequest httpReq,
 String target,
 long maxAgeMillis)

Creates a new caching proxy.

Parameters:

httpReq - The incoming HTTP request.

target - The target URL to proxy to.

maxAgeMillis - The maximum time in milliseconds to keep the response in the cache.

Method Details

getResponse

public HttpResponse getResponse()
                         throws Exception

Makes the connection, sends request and returns a ProxyResponse object suitable for returning the proxied response to the client.

Overrides:

getResponse in class Proxy

Returns:

Response for proxying data from the target address. Or ErrorResponse.

Throws:

Exception - An exception occured while connecting to the target or sending request.

makeResponse

protected ProxyResponse makeResponse()
                              throws Exception

Description copied from class: Proxy

Creates a ProxyResponse to stream the response back.

Overrides:

makeResponse in class Proxy

Returns:

A new ProxyResponse instance.

Throws:

Exception - If an error occurs creating the response.