Package org.apache.thrift.transport

Class TFramedTransport

java.lang.Object

org.apache.thrift.transport.TTransport

org.apache.thrift.transport.TFramedTransport

public class TFramedTransport
extends TTransport

TFramedTransport is a buffered TTransport that ensures a fully read message every time by preceding messages with a 4-byte frame size.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TFramedTransport.Factory

Field Summary

Fields

Modifier and Type	Field	Description
protected static int	DEFAULT_MAX_LENGTH

Constructor Summary

Constructors

Constructor	Description
TFramedTransport(TTransport transport)
TFramedTransport(TTransport transport, int maxLength)	Constructor wraps around another transport

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the transport.
void	consumeBuffer(int len)	Consume len bytes from the underlying buffer.
static int	decodeFrameSize(byte[] buf)
static void	encodeFrameSize(int frameSize, byte[] buf)
void	flush()	Flush any pending data out of a transport buffer.
byte[]	getBuffer()	Access the protocol's underlying buffer directly.
int	getBufferPosition()	Return the index within the underlying buffer that specifies the next spot that should be read from.
int	getBytesRemainingInBuffer()	Get the number of bytes remaining in the underlying buffer.
boolean	isOpen()	Queries whether the transport is open.
void	open()	Opens the transport for reading/writing.
int	read(byte[] buf, int off, int len)	Reads up to len bytes into buffer buf, starting at offset off.
void	write(byte[] buf, int off, int len)	Writes up to len bytes from the buffer.

Methods inherited from class java.lang.Object

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

Methods inherited from class org.apache.thrift.transport.TTransport

peek, readAll, write

Field Detail

DEFAULT_MAX_LENGTH

protected static final int DEFAULT_MAX_LENGTH

See Also:

Constant Field Values

Constructor Detail

TFramedTransport

public TFramedTransport(TTransport transport,
                        int maxLength)

Constructor wraps around another transport

TFramedTransport

public TFramedTransport(TTransport transport)

Method Detail

open

public void open()
          throws TTransportException

Description copied from class: TTransport

Opens the transport for reading/writing.

Specified by:

open in class TTransport

Throws:

TTransportException - if the transport could not be opened

isOpen

public boolean isOpen()

Description copied from class: TTransport

Queries whether the transport is open.

Specified by:

isOpen in class TTransport

Returns:

True if the transport is open.

close

public void close()

Description copied from class: TTransport

Closes the transport.

Specified by:

close in class TTransport

read

public int read(byte[] buf,
                int off,
                int len)
         throws TTransportException

Description copied from class: TTransport

Reads up to len bytes into buffer buf, starting at offset off.

Specified by:

read in class TTransport

Parameters:

buf - Array to read into

off - Index to start reading at

len - Maximum number of bytes to read

Returns:

The number of bytes actually read

Throws:

TTransportException - if there was an error reading data

getBuffer

public byte[] getBuffer()

Description copied from class: TTransport

Access the protocol's underlying buffer directly. If this is not a buffered transport, return null.

Overrides:

getBuffer in class TTransport

Returns:

protocol's Underlying buffer

getBufferPosition

public int getBufferPosition()

Description copied from class: TTransport

Return the index within the underlying buffer that specifies the next spot that should be read from.

Overrides:

getBufferPosition in class TTransport

Returns:

index within the underlying buffer that specifies the next spot that should be read from

getBytesRemainingInBuffer

public int getBytesRemainingInBuffer()

Description copied from class: TTransport

Get the number of bytes remaining in the underlying buffer. Returns -1 if this is a non-buffered transport.

Overrides:

getBytesRemainingInBuffer in class TTransport

Returns:

the number of bytes remaining in the underlying buffer.
Returns -1 if this is a non-buffered transport.

consumeBuffer

public void consumeBuffer(int len)

Description copied from class: TTransport

Consume len bytes from the underlying buffer.

Overrides:

consumeBuffer in class TTransport

write

public void write(byte[] buf,
                  int off,
                  int len)
           throws TTransportException

Description copied from class: TTransport

Writes up to len bytes from the buffer.

Specified by:

write in class TTransport

Parameters:

buf - The output data buffer

off - The offset to start writing from

len - The number of bytes to write

Throws:

TTransportException - if there was an error writing data

flush

public void flush()
           throws TTransportException

Description copied from class: TTransport

Flush any pending data out of a transport buffer.

Overrides:

flush in class TTransport

Throws:

TTransportException - if there was an error writing out data.

encodeFrameSize

public static final void encodeFrameSize(int frameSize,
                                         byte[] buf)

decodeFrameSize

public static final int decodeFrameSize(byte[] buf)