112 lines
2.9 KiB
Java
112 lines
2.9 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.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.net.ServerSocket;
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import java.net.Socket;
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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 TcpServer {
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private int port;
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private ServerSocket serverSocket;
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TcpServer() {
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this(514);
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}
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TcpServer(int port) {
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this.port = port;
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}
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public void start() throws IOException {
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serverSocket = new ServerSocket(port);
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while (true)
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new ClientHandler(serverSocket.accept(), eventListeners).start();
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}
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public void stop() throws IOException {
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serverSocket.close();
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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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private static class ClientHandler extends Thread {
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protected List<LogListener> eventListeners;
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private Socket clientSocket;
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private BufferedReader in;
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public ClientHandler(Socket socket, List<LogListener> eventListeners) {
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this.clientSocket = socket;
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this.eventListeners = eventListeners;
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}
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public void run() {
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try {
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in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
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String inputLine;
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while ((inputLine = in.readLine()) != null) {
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sendEvent(inputLine);
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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try {
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in.close();
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clientSocket.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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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 listeners = eventListeners.iterator();
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while( listeners.hasNext() ) {
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( (LogListener) listeners.next() ).onLogEvent( event );
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}
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}
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}
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}
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