/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.oncrpc;
import org.apache.hadoop.oncrpc.security.Verifier;
import org.apache.hadoop.oncrpc.security.RpcAuthInfo;
import org.apache.hadoop.oncrpc.security.RpcAuthInfo.AuthFlavor;
/**
* Represents RPC message MSG_ACCEPTED reply body. See RFC 1831 for details.
* This response is sent to a request to indicate success of the request.
*/
public class RpcAcceptedReply extends RpcReply {
public enum AcceptState {
// the order of the values below are significant.
SUCCESS, /* RPC executed successfully */
PROG_UNAVAIL, /* remote hasn't exported program */
PROG_MISMATCH, /* remote can't support version # */
PROC_UNAVAIL, /* program can't support procedure */
GARBAGE_ARGS, /* procedure can't decode params */
SYSTEM_ERR; /* e.g. memory allocation failure */
public static AcceptState fromValue(int value) {
return values()[value];
}
public int getValue() {
return ordinal();
}
};
private final RpcAuthInfo verifier;
private final AcceptState acceptState;
RpcAcceptedReply(int xid, RpcMessage.Type messageType, ReplyState state,
RpcAuthInfo verifier, AcceptState acceptState) {
super(xid, messageType, state);
this.verifier = verifier;
this.acceptState = acceptState;
}
public static RpcAcceptedReply read(int xid, RpcMessage.Type messageType,
ReplyState replyState, XDR xdr) {
Verifier verifier = Verifier.readFlavorAndVerifier(xdr);
AcceptState acceptState = AcceptState.fromValue(xdr.readInt());
return new RpcAcceptedReply(xid, messageType, replyState, verifier,
acceptState);
}
public RpcAuthInfo getVerifier() {
return verifier;
}
public AcceptState getAcceptState() {
return acceptState;
}
public static XDR voidReply(XDR xdr, int xid) {
return voidReply(xdr, xid, AcceptState.SUCCESS);
}
public static XDR voidReply(XDR xdr, int xid, AcceptState acceptState) {
xdr.writeInt(xid);
xdr.writeInt(RpcMessage.Type.RPC_REPLY.getValue());
xdr.writeInt(ReplyState.MSG_ACCEPTED.getValue());
xdr.writeInt(AuthFlavor.AUTH_NONE.getValue());
xdr.writeVariableOpaque(new byte[0]);
xdr.writeInt(acceptState.getValue());
return xdr;
}
}