net.spy.memcached.protocol.binary
Class StatsOperationImpl

java.lang.Object
  net.spy.memcached.compat.SpyObject
      net.spy.memcached.protocol.BaseOperationImpl
          net.spy.memcached.protocol.binary.StatsOperationImpl

All Implemented Interfaces:

Operation, StatsOperation

public class StatsOperationImpl
extends BaseOperationImpl
implements StatsOperation

Nested Class Summary

Nested classes/interfaces inherited from interface net.spy.memcached.ops.StatsOperation

StatsOperation.Callback

Field Summary

protected static byte[]	EMPTY_BYTES
protected static int	ERR_EINVAL
protected static int	ERR_EXISTS
protected static int	ERR_NOT_FOUND Error code for items that were not found.
protected static int	ERR_NOT_STORED
protected int	errorCode
protected static OperationStatus	EXISTS_STATUS
protected int	keyLen
protected static int	MIN_RECV_PACKET
protected static OperationStatus	NOT_FOUND_STATUS
protected static OperationStatus	NOT_STORED_STATUS
protected int	opaque
protected static byte	REQ_MAGIC
protected static byte	RES_MAGIC
protected long	responseCas
protected int	responseCmd
protected int	responseOpaque
protected static OperationStatus	STATUS_OK

Fields inherited from class net.spy.memcached.protocol.BaseOperationImpl

callback, CANCELLED

Constructor Summary

StatsOperationImpl(String arg, StatsOperation.Callback c)

Method Summary

protected void	decodePayload(byte[] pl) Decode the given payload for this command.
protected void	finishedPayload(byte[] pl)
protected OperationStatus	getStatusForErrorCode(int errCode, byte[] errPl) Get the OperationStatus object for the given error code.
void	initialize() Initialize this operation.
protected boolean	opaqueIsValid() Validate an opaque value from the header.
protected void	prepareBuffer(String key, long cas, byte[] val, Object... extraHeaders) Prepare a send buffer.
void	readFromBuffer(ByteBuffer b)
protected void	resetInput()

Methods inherited from class net.spy.memcached.protocol.BaseOperationImpl

cancel, getBuffer, getCallback, getException, getHandlingNode, getState, handleError, handleRead, hasErrored, isCancelled, setBuffer, setCallback, setHandlingNode, transitionState, wasCancelled, writeComplete

Methods inherited from class net.spy.memcached.compat.SpyObject

getLogger

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.spy.memcached.ops.Operation

cancel, getBuffer, getCallback, getException, getHandlingNode, getState, handleRead, hasErrored, isCancelled, readFromBuffer, setHandlingNode, writeComplete

Field Detail

REQ_MAGIC

protected static final byte REQ_MAGIC

See Also:

Constant Field Values

RES_MAGIC

protected static final byte RES_MAGIC

See Also:

Constant Field Values

MIN_RECV_PACKET

protected static final int MIN_RECV_PACKET

See Also:

Constant Field Values

ERR_NOT_FOUND

protected static final int ERR_NOT_FOUND

Error code for items that were not found.

See Also:

Constant Field Values

ERR_EXISTS

protected static final int ERR_EXISTS

See Also:

Constant Field Values

ERR_EINVAL

protected static final int ERR_EINVAL

See Also:

Constant Field Values

ERR_NOT_STORED

protected static final int ERR_NOT_STORED

See Also:

Constant Field Values

NOT_FOUND_STATUS

protected static final OperationStatus NOT_FOUND_STATUS

EXISTS_STATUS

protected static final OperationStatus EXISTS_STATUS

NOT_STORED_STATUS

protected static final OperationStatus NOT_STORED_STATUS

EMPTY_BYTES

protected static final byte[] EMPTY_BYTES

STATUS_OK

protected static final OperationStatus STATUS_OK

opaque

protected final int opaque

keyLen

protected int keyLen

responseCmd

protected int responseCmd

errorCode

protected int errorCode

responseOpaque

protected int responseOpaque

responseCas

protected long responseCas

Constructor Detail

StatsOperationImpl

public StatsOperationImpl(String arg,
                          StatsOperation.Callback c)

Method Detail

initialize

public void initialize()

Description copied from interface: Operation

Initialize this operation. This is used to prepare output byte buffers and stuff.

Specified by:

initialize in interface Operation

Specified by:

initialize in class BaseOperationImpl

finishedPayload

protected void finishedPayload(byte[] pl)
                        throws IOException

Throws:

IOException

resetInput

protected void resetInput()

readFromBuffer

public void readFromBuffer(ByteBuffer b)
                    throws IOException

Specified by:

readFromBuffer in class BaseOperationImpl

Throws:

IOException

getStatusForErrorCode

protected OperationStatus getStatusForErrorCode(int errCode,
                                                byte[] errPl)

Get the OperationStatus object for the given error code.

Parameters:

errCode - the error code

Returns:

the status to return, or null if this is an exceptional case

decodePayload

protected void decodePayload(byte[] pl)

Decode the given payload for this command.

Parameters:

pl - the payload.

opaqueIsValid

protected boolean opaqueIsValid()

Validate an opaque value from the header. This may be overridden from a subclass where the opaque isn't expected to always be the same as the request opaque.

prepareBuffer

protected void prepareBuffer(String key,
                             long cas,
                             byte[] val,
                             Object... extraHeaders)

Prepare a send buffer.

Parameters:

key - the key (for keyed ops)

cas - the cas value

val - the data payload

extraHeaders - any additional headers that need to be sent