}
}
@Override
public void handleInternal(ChannelHandlerContext ctx, RpcInfo info) {
RpcCall rpcCall = (RpcCall) info.header();
final NFSPROC3 nfsproc3 = NFSPROC3.fromValue(rpcCall.getProcedure());
int xid = rpcCall.getXid();
byte[] data = new byte[info.data().readableBytes()];
info.data().readBytes(data);
XDR xdr = new XDR(data);
XDR out = new XDR();
InetAddress client = ((InetSocketAddress) info.remoteAddress())
.getAddress();
Channel channel = info.channel();
Credentials credentials = rpcCall.getCredential();
// Ignore auth only for NFSPROC3_NULL, especially for Linux clients.
if (nfsproc3 != NFSPROC3.NULL) {
if (credentials.getFlavor() != AuthFlavor.AUTH_SYS
&& credentials.getFlavor() != AuthFlavor.RPCSEC_GSS) {
LOG.info("Wrong RPC AUTH flavor, " + credentials.getFlavor()
+ " is not AUTH_SYS or RPCSEC_GSS.");
XDR reply = new XDR();
RpcDeniedReply rdr = new RpcDeniedReply(xid,
RpcReply.ReplyState.MSG_ACCEPTED,
RpcDeniedReply.RejectState.AUTH_ERROR, new VerifierNone());
rdr.write(reply);
ChannelBuffer buf = ChannelBuffers.wrappedBuffer(reply.asReadOnlyWrap()
.buffer());
RpcResponse rsp = new RpcResponse(buf, info.remoteAddress());
RpcUtil.sendRpcResponse(ctx, rsp);
return;
}
}
if (!isIdempotent(rpcCall)) {
RpcCallCache.CacheEntry entry = rpcCallCache.checkOrAddToCache(client,
xid);
if (entry != null) { // in cache
if (entry.isCompleted()) {
LOG.info("Sending the cached reply to retransmitted request " + xid);
RpcUtil.sendRpcResponse(ctx, entry.getResponse());
return;
} else { // else request is in progress
LOG.info("Retransmitted request, transaction still in progress "
+ xid);
// Ignore the request and do nothing
return;
}
}
}
SecurityHandler securityHandler = getSecurityHandler(credentials,
rpcCall.getVerifier());
NFS3Response response = null;
if (nfsproc3 == NFSPROC3.NULL) {
response = nullProcedure();
} else if (nfsproc3 == NFSPROC3.GETATTR) {
response = getattr(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.SETATTR) {
response = setattr(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.LOOKUP) {
response = lookup(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.ACCESS) {
response = access(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.READLINK) {
response = readlink(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.READ) {
if (LOG.isDebugEnabled()) {
LOG.debug(Nfs3Utils.READ_RPC_START + xid);
}
response = read(xdr, securityHandler, client);
if (LOG.isDebugEnabled() && (nfsproc3 == NFSPROC3.READ)) {
LOG.debug(Nfs3Utils.READ_RPC_END + xid);
}
} else if (nfsproc3 == NFSPROC3.WRITE) {
if (LOG.isDebugEnabled()) {
LOG.debug(Nfs3Utils.WRITE_RPC_START + xid);
}
response = write(xdr, channel, xid, securityHandler, client);
// Write end debug trace is in Nfs3Utils.writeChannel
} else if (nfsproc3 == NFSPROC3.CREATE) {
response = create(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.MKDIR) {
response = mkdir(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.SYMLINK) {
response = symlink(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.MKNOD) {
response = mknod(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.REMOVE) {
response = remove(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.RMDIR) {
response = rmdir(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.RENAME) {
response = rename(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.LINK) {
response = link(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.READDIR) {
response = readdir(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.READDIRPLUS) {
response = readdirplus(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.FSSTAT) {
response = fsstat(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.FSINFO) {
response = fsinfo(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.PATHCONF) {
response = pathconf(xdr, securityHandler, client);
} else if (nfsproc3 == NFSPROC3.COMMIT) {
response = commit(xdr, channel, xid, securityHandler, client);
} else {
// Invalid procedure
RpcAcceptedReply.getInstance(xid,
RpcAcceptedReply.AcceptState.PROC_UNAVAIL, new VerifierNone()).write(
out);
}
if (response == null) {
if (LOG.isDebugEnabled()) {
LOG.debug("No sync response, expect an async response for request XID="
+ rpcCall.getXid());
}
return;
}
// TODO: currently we just return VerifierNone
out = response.writeHeaderAndResponse(out, xid, new VerifierNone());