@Override
public device_addr4 getDeviceInfo(CompoundContext context, deviceid4 deviceId) {
/* in case of MDS access we return the same interface which client already connected to */
if (deviceId.equals(MDS_ID)) {
return deviceAddrOf(
new RoundRobinStripingPattern<InetSocketAddress[]>(),
new InetSocketAddress[] {context.getRpcCall().getTransport().getLocalSocketAddress()});
}
PoolDS ds = _poolDeviceMap.getByDeviceId(deviceId);
if (ds == null) {
return null;
}
return ds.getDeviceAddr();
}
@Override
public void process(CompoundContext context, nfs_resop4 result) {
final WRITE4res res = result.opwrite;
try {
NfsMover mover = _activeIO.get(_args.opwrite.stateid);
if (mover == null) {
throw new ChimeraNFSException(
nfsstat.NFSERR_BAD_STATEID, "No mover associated with given stateid");
}
mover.attachSession(context.getSession());
if (mover.getIoMode() != IoMode.WRITE) {
throw new ChimeraNFSException(
nfsstat.NFSERR_PERM, "an attempt to write without IO mode enabled");
}
long offset = _args.opwrite.offset.value;
RepositoryChannel fc = mover.getMoverChannel();
_args.opwrite.data.rewind();
int bytesWritten = fc.write(_args.opwrite.data, offset);
res.status = nfsstat.NFS_OK;
res.resok4 = new WRITE4resok();
res.resok4.count = new count4(bytesWritten);
res.resok4.committed = stable_how4.FILE_SYNC4;
res.resok4.writeverf = new verifier4();
res.resok4.writeverf.value = new byte[nfs4_prot.NFS4_VERIFIER_SIZE];
_log.debug("MOVER: {}@{} written, {} requested.", bytesWritten, offset, bytesWritten);
} catch (ChimeraNFSException he) {
_log.debug(he.getMessage());
res.status = he.getStatus();
} catch (IOException ioe) {
_log.error("DSWRITE: ", ioe);
res.status = nfsstat.NFSERR_IO;
} catch (Exception e) {
_log.error("DSWRITE: ", e);
res.status = nfsstat.NFSERR_SERVERFAULT;
}
}
/**
* ask pool manager for a file
*
* <p>On successful reply from pool manager corresponding O request will be sent to the pool to
* start a NFS mover.
*
* @throws ChimeraNFSException in case of NFS friendly errors ( like ACCESS )
* @throws IOException in case of any other errors
*/
@Override
public Layout layoutGet(CompoundContext context, Inode nfsInode, int ioMode, stateid4 stateid)
throws IOException {
FsInode inode = _fileFileSystemProvider.inodeFromBytes(nfsInode.getFileId());
CDC cdc = CDC.reset(_cellName, _domainName);
try {
NDC.push(inode.toString());
NDC.push(context.getRpcCall().getTransport().getRemoteSocketAddress().toString());
deviceid4 deviceid;
if (inode.type() != FsInodeType.INODE || inode.getLevel() != 0) {
/*
* all non regular files ( AKA pnfs dot files ) provided by door itself.
*/
deviceid = MDS_ID;
} else {
final InetSocketAddress remote =
context.getRpcCall().getTransport().getRemoteSocketAddress();
final PnfsId pnfsId = new PnfsId(inode.toString());
final NFS4ProtocolInfo protocolInfo =
new NFS4ProtocolInfo(remote, new org.dcache.chimera.nfs.v4.xdr.stateid4(stateid));
Transfer.initSession();
NfsTransfer transfer = _ioMessages.get(stateid);
if (transfer == null) {
transfer =
new NfsTransfer(_pnfsHandler, context.getRpcCall().getCredential().getSubject());
transfer.setProtocolInfo(protocolInfo);
transfer.setCellName(this.getCellName());
transfer.setDomainName(this.getCellDomainName());
transfer.setBillingStub(_billingStub);
transfer.setPoolStub(_poolManagerStub);
transfer.setPoolManagerStub(_poolManagerStub);
transfer.setPnfsId(pnfsId);
transfer.setClientAddress(remote);
transfer.readNameSpaceEntry();
_ioMessages.put(stateid, transfer);
PoolDS ds = getPool(transfer, ioMode);
deviceid = ds.getDeviceId();
} else {
PoolDS ds = transfer.waitForRedirect(NFS_RETRY_PERIOD);
deviceid = ds.getDeviceId();
}
}
nfs_fh4 fh = new nfs_fh4(nfsInode.toNfsHandle());
// -1 is special value, which means entire file
layout4 layout = Layout.getLayoutSegment(deviceid, fh, ioMode, 0, nfs4_prot.NFS4_UINT64_MAX);
return new Layout(true, stateid, new layout4[] {layout});
} catch (FileInCacheException e) {
cleanStateAndKillMover(stateid);
throw new ChimeraNFSException(nfsstat.NFSERR_IO, e.getMessage());
} catch (CacheException e) {
cleanStateAndKillMover(stateid);
/*
* error 243: file is broken on tape.
* can't do a much. Tell it to client.
*/
int status =
e.getRc() == CacheException.BROKEN_ON_TAPE
? nfsstat.NFSERR_IO
: nfsstat.NFSERR_LAYOUTTRYLATER;
throw new ChimeraNFSException(status, e.getMessage());
} catch (InterruptedException e) {
cleanStateAndKillMover(stateid);
throw new ChimeraNFSException(nfsstat.NFSERR_LAYOUTTRYLATER, e.getMessage());
} finally {
cdc.close();
}
}