/*
* 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.example.udp;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.concurrent.ConcurrentHashMap;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import org.apache.mina.common.DefaultIoFilterChainBuilder;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.DatagramSessionConfig;
import org.apache.mina.transport.socket.nio.NioDatagramAcceptor;
/**
* The class that will accept and process clients in order to properly
* track the memory usage.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev$, $Date$
*/
public class MemoryMonitor {
private static final long serialVersionUID = 1L;
public static final int PORT = 18567;
protected static final Dimension PANEL_SIZE = new Dimension(300, 200);
private JFrame frame;
private JTabbedPane tabbedPane;
private ConcurrentHashMap<SocketAddress, ClientPanel> clients;
public MemoryMonitor() throws IOException {
NioDatagramAcceptor acceptor = new NioDatagramAcceptor();
acceptor.setHandler(new MemoryMonitorHandler(this));
DefaultIoFilterChainBuilder chain = acceptor.getFilterChain();
chain.addLast("logger", new LoggingFilter());
DatagramSessionConfig dcfg = acceptor.getSessionConfig();
dcfg.setReuseAddress(true);
frame = new JFrame("Memory monitor");
tabbedPane = new JTabbedPane();
tabbedPane.add("Welcome", createWelcomePanel());
frame.add(tabbedPane, BorderLayout.CENTER);
clients = new ConcurrentHashMap<SocketAddress, ClientPanel>();
frame.pack();
frame.setLocation(300, 300);
frame.setVisible(true);
acceptor.bind(new InetSocketAddress(PORT));
System.out.println("UDPServer listening on port " + PORT);
}
private JPanel createWelcomePanel() {
JPanel panel = new JPanel();
panel.setPreferredSize(PANEL_SIZE);
panel.add(new JLabel("Welcome to the Memory Monitor"));
return panel;
}
protected void recvUpdate(SocketAddress clientAddr, long update) {
ClientPanel clientPanel = clients.get(clientAddr);
if (clientPanel != null) {
clientPanel.updateTextField(update);
} else {
System.err.println("Received update from unknown client");
}
}
protected void addClient(SocketAddress clientAddr) {
if (!containsClient(clientAddr)) {
ClientPanel clientPanel = new ClientPanel(clientAddr.toString());
tabbedPane.add(clientAddr.toString(), clientPanel);
clients.put(clientAddr, clientPanel);
}
}
protected boolean containsClient(SocketAddress clientAddr) {
return clients.contains(clientAddr);
}
protected void removeClient(SocketAddress clientAddr) {
clients.remove(clientAddr);
}
public static void main(String[] args) throws IOException {
new MemoryMonitor();
}
}