com.emc.ecs.nfsclient.nfs

Class NfsWriteResponse

java.lang.Object

com.emc.ecs.nfsclient.rpc.RpcResponse

com.emc.ecs.nfsclient.nfs.NfsResponseBase

com.emc.ecs.nfsclient.nfs.NfsWriteResponse

Direct Known Subclasses:

Nfs3WriteResponse

public class NfsWriteResponse
extends NfsResponseBase

The response, as specified by RFC 1813 (https://tools.ietf.org/html/rfc1813).

Procedure WRITE writes data to a file.

Field Summary

Fields inherited from class com.emc.ecs.nfsclient.rpc.RpcResponse

_xid

Constructor Summary

Constructors

Constructor and Description
NfsWriteResponse(int nfsVersion) Creates the response, as specified by RFC 1813 (https://tools.ietf.org/html/rfc1813).

Method Summary

Modifier and Type	Method and Description
int	getCommitted()
int	getCount()
NfsWccData	getFileWccData()
long	getVerf()
void	unmarshalling(Xdr xdr) Load this structure from the response data, as specified by RFC 1831 (https://tools.ietf.org/html/rfc1831).

Methods inherited from class com.emc.ecs.nfsclient.nfs.NfsResponseBase

getAttributes, getFileHandle, getState, makeNfsGetAttributes, makeNfsGetAttributes, stateIsOk, toString, unmarshallingAttributes, unmarshallingAttributes, unmarshallingFileHandle, unmarshallingFileHandle

Methods inherited from class com.emc.ecs.nfsclient.rpc.RpcResponse

getAcceptStatus, getDirection, getRejectStatus, getReplyStatus, getXid

Methods inherited from class java.lang.Object

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

Constructor Detail

NfsWriteResponse

public NfsWriteResponse(int nfsVersion)

Creates the response, as specified by RFC 1813 (https://tools.ietf.org/html/rfc1813).

Procedure WRITE writes data to a file.

Parameters:

nfsVersion - The NFS version number. This is ignored for now, as only NFSv3 is supported, but is included to allow future support for other versions.

Method Detail

unmarshalling

public void unmarshalling(Xdr xdr)
                   throws RpcException

Description copied from class: RpcResponse

Load this structure from the response data, as specified by RFC 1831 (https://tools.ietf.org/html/rfc1831).

Overrides:

unmarshalling in class NfsResponseBase

Parameters:

xdr - The xdr response data.

Throws:

RpcException

getCommitted

public int getCommitted()

Returns:

One of the values below.

• UNSTABLE = 0 - Best effort was made, no promises.
• DATA_SYNC = 1 - Committed all data to stable storage, plus enough metadata for retrieval, before returning.
• FILE_SYNC = 2 - Committed all data and metadata to stable storage before returning.

getCount

public int getCount()

Returns:

The number of bytes of data written to the file. The server may write fewer bytes than requested. If so, the actual number of bytes written starting at location, offset, is returned.

getFileWccData

public NfsWccData getFileWccData()

Returns:

Weak cache consistency data for the file.

getVerf

public long getVerf()

Returns:

This is a cookie that the client can use to determine whether the server has changed state between a call to WRITE and a subsequent call to either WRITE or COMMIT. This cookie must be consistent during a single instance of the NFS version 3 protocol service and must be unique between instances of the NFS version 3 protocol server, where uncommitted data may be lost.