82 lines
2.3 KiB
Java
82 lines
2.3 KiB
Java
/*
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Copyright 2020 mark.nellemann@gmail.com
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package biz.nellemann.syslogd;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.DatagramSocket;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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public class UdpServer extends Thread {
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protected DatagramSocket socket;
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protected boolean listen = true;
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public UdpServer() throws IOException {
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this(514);
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}
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public UdpServer(int port) throws IOException {
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super("SyslogServer");
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socket = new DatagramSocket(port);
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}
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public void run() {
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byte[] buf = new byte[4096];
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DatagramPacket packet = new DatagramPacket(buf, buf.length);
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while (listen) {
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try {
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socket.receive(packet);
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String packetData = new String(packet.getData(), packet.getOffset(), packet.getLength(), StandardCharsets.UTF_8);
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sendEvent(packetData);
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} catch (Exception e) {
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e.printStackTrace();
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listen = false;
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}
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}
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socket.close();
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}
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private synchronized void sendEvent(String message) {
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LogEvent event = new LogEvent( this, message);
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Iterator<LogListener> listeners = eventListeners.iterator();
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while( listeners.hasNext() ) {
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listeners.next().onLogEvent( event );
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}
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}
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/**
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* Event Listener Configuration
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*/
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protected List<LogListener> eventListeners = new ArrayList<>();
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public synchronized void addEventListener( LogListener l ) {
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eventListeners.add( l );
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}
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public synchronized void removeEventListener( LogListener l ) {
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eventListeners.remove( l );
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}
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}
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