org.mortbay.jetty
Class AbstractGenerator

java.lang.Object
  org.mortbay.jetty.AbstractGenerator

All Implemented Interfaces:

Generator

Direct Known Subclasses:

Ajp13Generator, HttpGenerator

public abstract class AbstractGenerator
extends Object
implements Generator

Abstract Generator. Builds HTTP Messages. Currently this class uses a system parameter "jetty.direct.writers" to control two optional writer to byte conversions. buffer.writers=true will probably be faster, but will consume more memory. This option is just for testing and tuning.

Author:

gregw

Nested Class Summary

static class	AbstractGenerator.Output Output.
static class	AbstractGenerator.OutputWriter OutputWriter.

Field Summary

protected Buffer	_buffer
protected Buffers	_buffers
protected boolean	_close
protected Buffer	_content
protected int	_contentBufferSize
protected long	_contentLength
protected long	_contentWritten
protected EndPoint	_endp
protected boolean	_head
protected Buffer	_header
protected int	_headerBufferSize
protected boolean	_last
protected Buffer	_method
protected boolean	_noContent
protected Buffer	_reason
protected int	_state
protected int	_status
protected String	_uri
protected int	_version
static int	STATE_CONTENT
static int	STATE_END
static int	STATE_FLUSHING
static int	STATE_HEADER

Fields inherited from interface org.mortbay.jetty.Generator

LAST, MORE

Constructor Summary

AbstractGenerator(Buffers buffers, EndPoint io, int headerBufferSize, int contentBufferSize)
Constructor.

Method Summary

void	complete() Complete the message.
abstract void	completeHeader(HttpFields fields, boolean allContentAdded)
abstract long	flush()
int	getContentBufferSize()
long	getContentWritten()
static String	getReason(int code)
protected static Buffer	getReasonBuffer(int code)
boolean	getSendServerVersion()
int	getState()
Buffer	getUncheckedBuffer()
int	getVersion()
void	increaseContentBufferSize(int contentBufferSize)
boolean	isBufferFull()
boolean	isCommitted()
boolean	isComplete()
boolean	isContentWritten()
boolean	isHead()
boolean	isIdle()
boolean	isPersistent()
boolean	isState(int state)
protected abstract int	prepareUncheckedAddContent() Prepare buffer for unchecked writes.
void	reset(boolean returnBuffers)
void	resetBuffer()
void	sendError(int code, String reason, String content, boolean close) Utility method to send an error response.
void	setContentLength(long value)
void	setHead(boolean head)
void	setPersistent(boolean persistent)
void	setRequest(String method, String uri)
void	setResponse(int status, String reason)
void	setSendServerVersion(boolean sendServerVersion)
void	setVersion(int version)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mortbay.jetty.Generator

addContent, addContent

Field Detail

STATE_HEADER

public static final int STATE_HEADER

See Also:

Constant Field Values

STATE_CONTENT

public static final int STATE_CONTENT

See Also:

Constant Field Values

STATE_FLUSHING

public static final int STATE_FLUSHING

See Also:

Constant Field Values

STATE_END

public static final int STATE_END

See Also:

Constant Field Values

_state

protected int _state

_status

protected int _status

_version

protected int _version

_reason

protected Buffer _reason

_method

protected Buffer _method

_uri

protected String _uri

_contentWritten

protected long _contentWritten

_contentLength

protected long _contentLength

_last

protected boolean _last

_head

protected boolean _head

_noContent

protected boolean _noContent

_close

protected boolean _close

_buffers

protected Buffers _buffers

_endp

protected EndPoint _endp

_headerBufferSize

protected int _headerBufferSize

_contentBufferSize

protected int _contentBufferSize

_header

protected Buffer _header

_buffer

protected Buffer _buffer

_content

protected Buffer _content

Constructor Detail

AbstractGenerator

public AbstractGenerator(Buffers buffers,
                         EndPoint io,
                         int headerBufferSize,
                         int contentBufferSize)

Constructor.

Parameters:

buffers - buffer pool

headerBufferSize - Size of the buffer to allocate for HTTP header

contentBufferSize - Size of the buffer to allocate for HTTP content

Method Detail

getReasonBuffer

protected static Buffer getReasonBuffer(int code)

getReason

public static String getReason(int code)

reset

public void reset(boolean returnBuffers)

Specified by:

reset in interface Generator

resetBuffer

public void resetBuffer()

Specified by:

resetBuffer in interface Generator

getContentBufferSize

public int getContentBufferSize()

Specified by:

getContentBufferSize in interface Generator

Returns:

Returns the contentBufferSize.

increaseContentBufferSize

public void increaseContentBufferSize(int contentBufferSize)

Specified by:

increaseContentBufferSize in interface Generator

Parameters:

contentBufferSize - The contentBufferSize to set.

getUncheckedBuffer

public Buffer getUncheckedBuffer()

getSendServerVersion

public boolean getSendServerVersion()

setSendServerVersion

public void setSendServerVersion(boolean sendServerVersion)

Specified by:

setSendServerVersion in interface Generator

getState

public int getState()

isState

public boolean isState(int state)

isComplete

public boolean isComplete()

Specified by:

isComplete in interface Generator

isIdle

public boolean isIdle()

Specified by:

isIdle in interface Generator

isCommitted

public boolean isCommitted()

Specified by:

isCommitted in interface Generator

isHead

public boolean isHead()

Returns:

Returns the head.

setContentLength

public void setContentLength(long value)

Specified by:

setContentLength in interface Generator

setHead

public void setHead(boolean head)

Specified by:

setHead in interface Generator

Parameters:

head - The head to set.

isPersistent

public boolean isPersistent()

Specified by:

isPersistent in interface Generator

Returns:

false if the connection should be closed after a request has been read, true if it should be used for additional requests.

setPersistent

public void setPersistent(boolean persistent)

Specified by:

setPersistent in interface Generator

setVersion

public void setVersion(int version)

Specified by:

setVersion in interface Generator

Parameters:

version - The version of the client the response is being sent to (NB. Not the version in the response, which is the version of the server).

getVersion

public int getVersion()

setRequest

public void setRequest(String method,
                       String uri)

Specified by:

setRequest in interface Generator

setResponse

public void setResponse(int status,
                        String reason)

Specified by:

setResponse in interface Generator

Parameters:

status - The status code to send.

reason - the status message to send.

prepareUncheckedAddContent

protected abstract int prepareUncheckedAddContent()
                                           throws IOException

Prepare buffer for unchecked writes. Prepare the generator buffer to receive unchecked writes

Returns:

the available space in the buffer.

Throws:

IOException

isBufferFull

public boolean isBufferFull()

Specified by:

isBufferFull in interface Generator

isContentWritten

public boolean isContentWritten()

Specified by:

isContentWritten in interface Generator

completeHeader

public abstract void completeHeader(HttpFields fields,
                                    boolean allContentAdded)
                             throws IOException

Specified by:

completeHeader in interface Generator

Throws:

IOException

complete

public void complete()
              throws IOException

Complete the message.

Specified by:

complete in interface Generator

Throws:

IOException

flush

public abstract long flush()
                    throws IOException

Specified by:

flush in interface Generator

Throws:

IOException

sendError

public void sendError(int code,
                      String reason,
                      String content,
                      boolean close)
               throws IOException

Utility method to send an error response. If the builder is not committed, this call is equivalent to a setResponse, addcontent and complete call.

Specified by:

sendError in interface Generator

Parameters:

code -

reason -

content -

close -

Throws:

IOException

getContentWritten

public long getContentWritten()

Specified by:

getContentWritten in interface Generator

Returns:

Returns the contentWritten.