/*
* 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.mina.core;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.service.IoAcceptor;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
/**
* @author <a href="http://mina.apache.org">Apache MINA Project</a>
*/
public class MinaBenchmarkServer implements BenchmarkServer {
private static enum State {
WAIT_FOR_FIRST_BYTE_LENGTH, WAIT_FOR_SECOND_BYTE_LENGTH, WAIT_FOR_THIRD_BYTE_LENGTH, WAIT_FOR_FOURTH_BYTE_LENGTH, READING
}
private static final IoBuffer ACK = IoBuffer.allocate(1);
static {
ACK.put((byte) 0);
ACK.rewind();
}
private static final String STATE_ATTRIBUTE = MinaBenchmarkServer.class.getName() + ".state";
private static final String LENGTH_ATTRIBUTE = MinaBenchmarkServer.class.getName() + ".length";
private IoAcceptor acceptor;
/**
* {@inheritDoc}
*/
public void start(int port) throws IOException {
acceptor = new NioSocketAcceptor(2 * Runtime.getRuntime().availableProcessors());
((NioSocketAcceptor) acceptor).getSessionConfig().setReadBufferSize(128 * 1024);
((NioSocketAcceptor) acceptor).getSessionConfig().setTcpNoDelay(true);
acceptor.setHandler(new IoHandlerAdapter() {
public void sessionOpened(IoSession session) throws Exception {
session.setAttribute(STATE_ATTRIBUTE, State.WAIT_FOR_FIRST_BYTE_LENGTH);
}
public void messageReceived(IoSession session, Object message) throws Exception {
if (message instanceof IoBuffer) {
IoBuffer buffer = (IoBuffer) message;
State state = (State) session.getAttribute(STATE_ATTRIBUTE);
int length = 0;
if (session.containsAttribute(LENGTH_ATTRIBUTE)) {
length = (Integer) session.getAttribute(LENGTH_ATTRIBUTE);
}
while (buffer.remaining() > 0) {
switch (state) {
case WAIT_FOR_FIRST_BYTE_LENGTH:
length = (buffer.get() & 255) << 24;
state = State.WAIT_FOR_SECOND_BYTE_LENGTH;
break;
case WAIT_FOR_SECOND_BYTE_LENGTH:
length += (buffer.get() & 255) << 16;
state = State.WAIT_FOR_THIRD_BYTE_LENGTH;
break;
case WAIT_FOR_THIRD_BYTE_LENGTH:
length += (buffer.get() & 255) << 8;
state = State.WAIT_FOR_FOURTH_BYTE_LENGTH;
break;
case WAIT_FOR_FOURTH_BYTE_LENGTH:
length += (buffer.get() & 255);
state = State.READING;
if ((length == 0) && (buffer.remaining() == 0)) {
session.write(ACK.slice());
state = State.WAIT_FOR_FIRST_BYTE_LENGTH;
}
break;
case READING:
int remaining = buffer.remaining();
if (length > remaining) {
length -= remaining;
buffer.skip(remaining);
} else {
buffer.skip(length);
session.write(ACK.slice());
state = State.WAIT_FOR_FIRST_BYTE_LENGTH;
length = 0;
}
}
}
session.setAttribute(LENGTH_ATTRIBUTE, length);
session.setAttribute(STATE_ATTRIBUTE, state);
}
}
public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
cause.printStackTrace();
}
});
acceptor.bind(new InetSocketAddress(port));
}
/**
* {@inheritedDoc}
*/
public void stop() throws IOException {
acceptor.dispose(true);
}
}