1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 package org.apache.thrift; 20 21 import org.apache.thrift.async.AsyncMethodCallback; 22 import org.apache.thrift.protocol.TMessage; 23 import org.apache.thrift.protocol.TProtocol; 24 import org.apache.thrift.server.AbstractNonblockingServer; 25 26 public abstract class AsyncProcessFunction<I, T extends TBase, R> { 27 final String methodName; 28 AsyncProcessFunction(String methodName)29 public AsyncProcessFunction(String methodName) { 30 this.methodName = methodName; 31 } 32 isOneway()33 protected abstract boolean isOneway(); 34 start(I iface, T args, AsyncMethodCallback<R> resultHandler)35 public abstract void start(I iface, T args, AsyncMethodCallback<R> resultHandler) throws TException; 36 getEmptyArgsInstance()37 public abstract T getEmptyArgsInstance(); 38 getResultHandler(final AbstractNonblockingServer.AsyncFrameBuffer fb, int seqid)39 public abstract AsyncMethodCallback<R> getResultHandler(final AbstractNonblockingServer.AsyncFrameBuffer fb, int seqid); 40 getMethodName()41 public String getMethodName() { 42 return methodName; 43 } 44 sendResponse(final AbstractNonblockingServer.AsyncFrameBuffer fb, final TSerializable result, final byte type, final int seqid)45 public void sendResponse(final AbstractNonblockingServer.AsyncFrameBuffer fb, final TSerializable result, final byte type, final int seqid) throws TException { 46 TProtocol oprot = fb.getOutputProtocol(); 47 48 oprot.writeMessageBegin(new TMessage(getMethodName(), type, seqid)); 49 result.write(oprot); 50 oprot.writeMessageEnd(); 51 oprot.getTransport().flush(); 52 53 fb.responseReady(); 54 } 55 } 56