rabbit.handler
Class BaseHandler

java.lang.Object
  rabbit.handler.BaseHandler

All Implemented Interfaces:

Handler

Direct Known Subclasses:

GZIPHandler, ImageHandler, MultiPartHandler

public class BaseHandler

extends java.lang.Object

implements Handler

This class is an implementation of the Handler interface. This handler does no filtering, it only sends the data as effective as it can.

Field Summary

protected java.io.OutputStream	cacheStream The cache stream if available.
protected MultiOutputStream	clientstream The stream to send data to.
protected Connection	con The Connection handling the request.
protected java.io.InputStream	contentstream The stream to read data from.
protected NCacheEntry	entry The cache entry if available.
protected boolean	maycache May we cache this request.
protected boolean	mayfilter May we filter this request
protected HTTPHeader	request The actual request made.
protected HTTPHeader	response The actual response.
protected long	size The length of the data beeing handled or -1 if unknown.

Constructor Summary

BaseHandler(Connection con, HTTPHeader request, HTTPHeader response, java.io.InputStream contentstream, MultiOutputStream clientstream, boolean maycache, boolean mayfilter, long size)
Create a new BaseHansler for the given request.

Method Summary

protected void	addCacheStream() Set up the cache stream if available.
protected void	finish() Close nesseccary files and adjust the cached files.
protected void	finishStream() This method is used to finish the stream for the data being sent.
void	handle() Handle the request.
protected void	prepareStream() This method is used to prepare the stream for the data being sent.
protected void	removeCache(java.lang.Exception e) Remove the cachestream and the cache entry.
protected void	send() Send the actual data.
protected void	setPartialContent(long got, long shouldbe)
protected void	writeHeader() Write the response header

Methods inherited from class java.lang.Object

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

Field Detail

con

protected Connection con

The Connection handling the request.

request

protected HTTPHeader request

The actual request made.

response

protected HTTPHeader response

The actual response.

contentstream

protected java.io.InputStream contentstream

The stream to read data from.

clientstream

protected MultiOutputStream clientstream

The stream to send data to.

maycache

protected boolean maycache

May we cache this request.

mayfilter

protected boolean mayfilter

May we filter this request

entry

protected NCacheEntry entry

The cache entry if available.

cacheStream

protected java.io.OutputStream cacheStream

The cache stream if available.

size

protected long size

The length of the data beeing handled or -1 if unknown.

Constructor Detail

BaseHandler

public BaseHandler(Connection con,
                   HTTPHeader request,
                   HTTPHeader response,
                   java.io.InputStream contentstream,
                   MultiOutputStream clientstream,
                   boolean maycache,
                   boolean mayfilter,
                   long size)

Create a new BaseHansler for the given request.

Parameters:

con - the Connection handling the request.

request - the actual request made.

response - the actual response.

contentstream - the stream to read data from.

clientstream - the stream to write data to.

maycache - May we cache this request?

mayfilter - May we filter this request?

size - the size of the data beeing handled.

Method Detail

writeHeader

protected void writeHeader()
                    throws java.io.IOException

Write the response header

Throws:

java.io.IOException - if writing the response fails.

addCacheStream

protected void addCacheStream()
                       throws java.io.IOException

Set up the cache stream if available.

Throws:

java.io.IOException - if a cachestream couldnt be set up.

prepareStream

protected void prepareStream()
                      throws java.io.IOException

This method is used to prepare the stream for the data being sent. This method does nothing here.

Throws:

java.io.IOException

send

protected void send()
             throws java.io.IOException

Send the actual data.

Throws:

java.io.IOException - if reading or writing of the data fails.

setPartialContent

protected void setPartialContent(long got,
                                 long shouldbe)

finishStream

protected void finishStream()
                     throws java.io.IOException

This method is used to finish the stream for the data being sent. This method does nothing here.

Throws:

java.io.IOException

finish

protected void finish()
               throws java.io.IOException

Close nesseccary files and adjust the cached files. If you override this one, remember to call super.finish ()!

Throws:

java.io.IOException - if closing the files does.

handle

public void handle()
            throws java.io.IOException

Handle the request. A request is made in these steps: writeHeader (); addCacheStream (); prepareStream (); send (); finishStream (); finish ();

Specified by:

handle in interface Handler

Throws:

java.io.IOException - if any of the underlying methods does.

removeCache

protected void removeCache(java.lang.Exception e)

Remove the cachestream and the cache entry. Use this to clean up resources held, but not released due to IOExceptions.

Parameters:

e - the Exception that happened