| /** |
| * 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.RpcAuthInfo; |
| import org.apache.hadoop.oncrpc.security.Verifier; |
| |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * Represents an RPC message of type RPC reply as defined in RFC 1831 |
| */ |
| public abstract class RpcReply extends RpcMessage { |
| /** RPC reply_stat as defined in RFC 1831 */ |
| public enum ReplyState { |
| // the order of the values below are significant. |
| MSG_ACCEPTED, |
| MSG_DENIED; |
| |
| int getValue() { |
| return ordinal(); |
| } |
| |
| public static ReplyState fromValue(int value) { |
| return values()[value]; |
| } |
| } |
| |
| protected final ReplyState replyState; |
| protected final Verifier verifier; |
| |
| RpcReply(int xid, ReplyState state, Verifier verifier) { |
| super(xid, RpcMessage.Type.RPC_REPLY); |
| this.replyState = state; |
| this.verifier = verifier; |
| } |
| |
| public RpcAuthInfo getVerifier() { |
| return verifier; |
| } |
| |
| public static RpcReply read(XDR xdr) { |
| int xid = xdr.readInt(); |
| final Type messageType = Type.fromValue(xdr.readInt()); |
| Preconditions.checkState(messageType == RpcMessage.Type.RPC_REPLY); |
| |
| ReplyState stat = ReplyState.fromValue(xdr.readInt()); |
| switch (stat) { |
| case MSG_ACCEPTED: |
| return RpcAcceptedReply.read(xid, stat, xdr); |
| case MSG_DENIED: |
| return RpcDeniedReply.read(xid, stat, xdr); |
| } |
| return null; |
| } |
| |
| public ReplyState getState() { |
| return replyState; |
| } |
| } |