/*
* 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.server;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.thrift.TException;
import org.apache.thrift.TProcessor;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.protocol.TProtocolFactory;
import org.apache.thrift.transport.TIOStreamTransport;
import org.apache.thrift.transport.TTransport;
import org.apache.thrift.transport.TTransportException;
import org.apache.thrift.transport.TTransportFactory;
/**
* <p>
* A servlet for exposing Thrift services over HTTP. To use, create a subclass that
* supplies a {@link TProcessor}. For example,
* </p>
* <pre>
* public class CalculatorTServlet extends TServlet {
* public CalculatorTServlet() {
* super(new Calculator.Processor(new CalculatorHandler()));
* }
* }
* </pre>
* <p>
*/
public class TServlet extends HttpServlet {
private static final long serialVersionUID = 3088919109563813323L;
protected TProcessor processor_ = null;
protected TTransportFactory inputTransportFactory_ = new TTransportFactory();
protected TTransportFactory outputTransportFactory_ = new TTransportFactory();
protected TProtocolFactory inputProtocolFactory_ = new TBinaryProtocol.Factory();
protected TProtocolFactory outputProtocolFactory_ = new TBinaryProtocol.Factory();
public TServlet() {
}
public TServlet(TProcessor processor) {
processor_ = processor;
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("application/x-thrift");
InputStream in = request.getInputStream();
OutputStream out = response.getOutputStream();
TTransport client = new TIOStreamTransport(in, out);
TProcessor processor = null;
TTransport inputTransport = null;
TTransport outputTransport = null;
TProtocol inputProtocol = null;
TProtocol outputProtocol = null;
try {
processor = processor_;
inputTransport = inputTransportFactory_.getTransport(client);
outputTransport = outputTransportFactory_.getTransport(client);
inputProtocol = inputProtocolFactory_.getProtocol(inputTransport);
outputProtocol = outputProtocolFactory_.getProtocol(outputTransport);
while (processor.process(inputProtocol, outputProtocol)) {}
} catch (TTransportException ttx) {
// Client died, just move on
} catch (TException tx) {
tx.printStackTrace();
} catch (Exception x) {
x.printStackTrace();
}
if (inputTransport != null) {
inputTransport.close();
}
if (outputTransport != null) {
outputTransport.close();
}
}
}