org.apache.thrift.TServiceClient Maven / Gradle / Ivy
/*
* 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.thrift;
import org.apache.thrift.protocol.TMessage;
import org.apache.thrift.protocol.TMessageType;
import org.apache.thrift.protocol.TProtocol;
/**
* A TServiceClient is used to communicate with a TService implementation
* across protocols and transports.
*/
public abstract class TServiceClient {
public TServiceClient(TProtocol prot) {
this(prot, prot);
}
public TServiceClient(TProtocol iprot, TProtocol oprot) {
iprot_ = iprot;
oprot_ = oprot;
}
protected TProtocol iprot_;
protected TProtocol oprot_;
protected int seqid_;
/**
* Get the TProtocol being used as the input (read) protocol.
* @return the TProtocol being used as the input (read) protocol.
*/
public TProtocol getInputProtocol() {
return this.iprot_;
}
/**
* Get the TProtocol being used as the output (write) protocol.
* @return the TProtocol being used as the output (write) protocol.
*/
public TProtocol getOutputProtocol() {
return this.oprot_;
}
protected void sendBase(String methodName, TBase args) throws TException {
sendBase(methodName, args, TMessageType.CALL);
}
protected void sendBaseOneway(String methodName, TBase args) throws TException {
sendBase(methodName, args, TMessageType.ONEWAY);
}
private void sendBase(String methodName, TBase args, byte type) throws TException {
oprot_.writeMessageBegin(new TMessage(methodName, type, ++seqid_));
args.write(oprot_);
oprot_.writeMessageEnd();
oprot_.getTransport().flush();
}
protected void receiveBase(TBase result, String methodName) throws TException {
TMessage msg = iprot_.readMessageBegin();
if (msg.type == TMessageType.EXCEPTION) {
TApplicationException x = new TApplicationException();
x.read(iprot_);
iprot_.readMessageEnd();
throw x;
}
if (msg.seqid != seqid_) {
throw new TApplicationException(TApplicationException.BAD_SEQUENCE_ID,
String.format("%s failed: out of sequence response: expected %d but got %d", methodName, seqid_, msg.seqid));
}
result.read(iprot_);
iprot_.readMessageEnd();
}
}