@Override
public Response statfs(Map<Byte, Long> instanceMap) throws TException {
// TODO: don't care about this for now
Response r = new Response(replica.getInstanceMap());
r.setStatfs(
new FileSystemStats(32 * 1024, 0, Integer.MAX_VALUE, Integer.MAX_VALUE, 0, 0, 1024));
return r;
}
@Override
public Response open(String path, int flags, Map<Byte, Long> instanceMap) throws TException {
path = makePathAbsolute(path);
Set<Byte> parts = oracle.partitionsOf(path);
Command cmd = newCommand(CommandType.OPEN, parts, instanceMap);
OpenCmd open = new OpenCmd(path, flags, parts);
cmd.setOpen(open);
FileHandle fh = (FileHandle) replica.submitCommand(cmd);
Response r = new Response(replica.getInstanceMap());
r.setOpen(fh);
return r;
}
@Override
public Response getattr(String path, Map<Byte, Long> instanceMap) throws TException {
// can be sent to ANY partition that replicates the path - we send it to the first returned by
// the oracle
path = makePathAbsolute(path);
Set<Byte> parts = Sets.newHashSet(Byte.valueOf(partition));
Command cmd = newCommand(CommandType.ATTR, parts, instanceMap);
AttrCmd attr = new AttrCmd(path, parts);
cmd.setAttr(attr);
Attr result = (Attr) replica.submitCommand(cmd);
Response r = new Response(replica.getInstanceMap());
r.setGetattr(result);
return r;
}
@Override
public Response readlink(String path, Map<Byte, Long> instanceMap) throws TException {
path = makePathAbsolute(path);
// can be sent to ANY partition that replicates the path - we send it to the first returned by
// the oracle
Set<Byte> parts = Sets.newHashSet(Byte.valueOf(partition));
Command cmd = newCommand(CommandType.READLINK, parts, instanceMap);
ReadlinkCmd readlink = new ReadlinkCmd(path, parts);
cmd.setReadlink(readlink);
String result = (String) replica.submitCommand(cmd);
Response r = new Response(replica.getInstanceMap());
r.setReadlink(result);
return r;
}
@Override
public Response getdir(String path, Map<Byte, Long> instanceMap) throws TException {
// can be sent to ANY partition that replicates the path - we send it to the first returned by
// the oracle
path = makePathAbsolute(path);
Set<Byte> parts = Sets.newHashSet(Byte.valueOf(partition));
Command cmd = newCommand(CommandType.GETDIR, parts, instanceMap);
GetdirCmd getdir = new GetdirCmd(path, parts);
cmd.setGetdir(getdir);
@SuppressWarnings("unchecked")
List<DirEntry> entries = (List<DirEntry>) replica.submitCommand(cmd);
Response r = new Response(replica.getInstanceMap());
r.setGetdir(entries);
return r;
}
@Override
public Response readBlocks(
String path, FileHandle fh, long offset, long bytes, Map<Byte, Long> instanceMap)
throws TException {
path = makePathAbsolute(path);
// assuming this replica replicates the file, send to own partition
Set<Byte> parts = Sets.newHashSet(Byte.valueOf(partition));
Command cmd = newCommand(CommandType.READ_BLOCKS, parts, instanceMap);
ReadBlocksCmd read = new ReadBlocksCmd(path, fh, offset, bytes, parts);
cmd.setRead(read);
ReadResult readResult = (ReadResult) replica.submitCommand(cmd);
Response r = new Response(replica.getInstanceMap());
r.setReadBlocks(readResult);
return r;
}