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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> |
| <FONT color="green">003</FONT> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <FONT color="green">004</FONT> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <FONT color="green">005</FONT> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a> |
| <FONT color="green">006</FONT> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <FONT color="green">007</FONT> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <FONT color="green">008</FONT> *<a name="line.8"></a> |
| <FONT color="green">009</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <FONT color="green">010</FONT> *<a name="line.10"></a> |
| <FONT color="green">011</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <FONT color="green">012</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <FONT color="green">013</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <FONT color="green">014</FONT> * See the license for the specific language governing permissions and<a name="line.14"></a> |
| <FONT color="green">015</FONT> * limitations under the license.<a name="line.15"></a> |
| <FONT color="green">016</FONT> */<a name="line.16"></a> |
| <FONT color="green">017</FONT> package org.apache.logging.log4j.core.net;<a name="line.17"></a> |
| <FONT color="green">018</FONT> <a name="line.18"></a> |
| <FONT color="green">019</FONT> import org.apache.logging.log4j.Logger;<a name="line.19"></a> |
| <FONT color="green">020</FONT> import org.apache.logging.log4j.core.appender.AppenderRuntimeException;<a name="line.20"></a> |
| <FONT color="green">021</FONT> import org.apache.logging.log4j.status.StatusLogger;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.io.IOException;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.io.OutputStream;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.net.DatagramPacket;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import java.net.DatagramSocket;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import java.net.InetAddress;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import java.net.SocketException;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import java.net.UnknownHostException;<a name="line.29"></a> |
| <FONT color="green">030</FONT> <a name="line.30"></a> |
| <FONT color="green">031</FONT> /**<a name="line.31"></a> |
| <FONT color="green">032</FONT> * OutputStream for UDP connections.<a name="line.32"></a> |
| <FONT color="green">033</FONT> */<a name="line.33"></a> |
| <FONT color="green">034</FONT> public class DatagramOutputStream extends OutputStream {<a name="line.34"></a> |
| <FONT color="green">035</FONT> <a name="line.35"></a> |
| <FONT color="green">036</FONT> /**<a name="line.36"></a> |
| <FONT color="green">037</FONT> * Allow subclasses access to the status logger without creating another instance.<a name="line.37"></a> |
| <FONT color="green">038</FONT> */<a name="line.38"></a> |
| <FONT color="green">039</FONT> protected static final Logger LOGGER = StatusLogger.getLogger();<a name="line.39"></a> |
| <FONT color="green">040</FONT> <a name="line.40"></a> |
| <FONT color="green">041</FONT> private static final int SHIFT_1 = 8;<a name="line.41"></a> |
| <FONT color="green">042</FONT> private static final int SHIFT_2 = 16;<a name="line.42"></a> |
| <FONT color="green">043</FONT> private static final int SHIFT_3 = 24;<a name="line.43"></a> |
| <FONT color="green">044</FONT> <a name="line.44"></a> |
| <FONT color="green">045</FONT> private DatagramSocket ds;<a name="line.45"></a> |
| <FONT color="green">046</FONT> private InetAddress address;<a name="line.46"></a> |
| <FONT color="green">047</FONT> private int port;<a name="line.47"></a> |
| <FONT color="green">048</FONT> <a name="line.48"></a> |
| <FONT color="green">049</FONT> private byte[] data;<a name="line.49"></a> |
| <FONT color="green">050</FONT> <a name="line.50"></a> |
| <FONT color="green">051</FONT> /**<a name="line.51"></a> |
| <FONT color="green">052</FONT> * The Constructor.<a name="line.52"></a> |
| <FONT color="green">053</FONT> * @param host The host to connect to.<a name="line.53"></a> |
| <FONT color="green">054</FONT> * @param port The port on the host.<a name="line.54"></a> |
| <FONT color="green">055</FONT> */<a name="line.55"></a> |
| <FONT color="green">056</FONT> public DatagramOutputStream(String host, int port) {<a name="line.56"></a> |
| <FONT color="green">057</FONT> this.port = port;<a name="line.57"></a> |
| <FONT color="green">058</FONT> try {<a name="line.58"></a> |
| <FONT color="green">059</FONT> address = InetAddress.getByName(host);<a name="line.59"></a> |
| <FONT color="green">060</FONT> } catch (UnknownHostException ex) {<a name="line.60"></a> |
| <FONT color="green">061</FONT> String msg = "Could not find host " + host;<a name="line.61"></a> |
| <FONT color="green">062</FONT> LOGGER.error(msg, ex);<a name="line.62"></a> |
| <FONT color="green">063</FONT> throw new AppenderRuntimeException(msg, ex);<a name="line.63"></a> |
| <FONT color="green">064</FONT> }<a name="line.64"></a> |
| <FONT color="green">065</FONT> <a name="line.65"></a> |
| <FONT color="green">066</FONT> try {<a name="line.66"></a> |
| <FONT color="green">067</FONT> ds = new DatagramSocket();<a name="line.67"></a> |
| <FONT color="green">068</FONT> } catch (SocketException ex) {<a name="line.68"></a> |
| <FONT color="green">069</FONT> String msg = "Could not instantiate DatagramSocket to " + host;<a name="line.69"></a> |
| <FONT color="green">070</FONT> LOGGER.error(msg, ex);<a name="line.70"></a> |
| <FONT color="green">071</FONT> throw new AppenderRuntimeException(msg, ex);<a name="line.71"></a> |
| <FONT color="green">072</FONT> }<a name="line.72"></a> |
| <FONT color="green">073</FONT> }<a name="line.73"></a> |
| <FONT color="green">074</FONT> <a name="line.74"></a> |
| <FONT color="green">075</FONT> @Override<a name="line.75"></a> |
| <FONT color="green">076</FONT> public synchronized void write(byte[] bytes, int offset, int length) throws IOException {<a name="line.76"></a> |
| <FONT color="green">077</FONT> copy(bytes, offset, length);<a name="line.77"></a> |
| <FONT color="green">078</FONT> }<a name="line.78"></a> |
| <FONT color="green">079</FONT> <a name="line.79"></a> |
| <FONT color="green">080</FONT> @Override<a name="line.80"></a> |
| <FONT color="green">081</FONT> public synchronized void write(int i) throws IOException {<a name="line.81"></a> |
| <FONT color="green">082</FONT> copy(new byte[] {(byte) (i >>> SHIFT_3), (byte) (i >>> SHIFT_2), (byte) (i >>> SHIFT_1), (byte) i}, 0, 4);<a name="line.82"></a> |
| <FONT color="green">083</FONT> }<a name="line.83"></a> |
| <FONT color="green">084</FONT> <a name="line.84"></a> |
| <FONT color="green">085</FONT> @Override<a name="line.85"></a> |
| <FONT color="green">086</FONT> public synchronized void write(byte[] bytes) throws IOException {<a name="line.86"></a> |
| <FONT color="green">087</FONT> copy(bytes, 0, bytes.length);<a name="line.87"></a> |
| <FONT color="green">088</FONT> }<a name="line.88"></a> |
| <FONT color="green">089</FONT> <a name="line.89"></a> |
| <FONT color="green">090</FONT> @Override<a name="line.90"></a> |
| <FONT color="green">091</FONT> public synchronized void flush() throws IOException {<a name="line.91"></a> |
| <FONT color="green">092</FONT> if (this.ds != null && this.address != null) {<a name="line.92"></a> |
| <FONT color="green">093</FONT> DatagramPacket packet = new DatagramPacket(data, data.length, address, port);<a name="line.93"></a> |
| <FONT color="green">094</FONT> ds.send(packet);<a name="line.94"></a> |
| <FONT color="green">095</FONT> }<a name="line.95"></a> |
| <FONT color="green">096</FONT> data = null;<a name="line.96"></a> |
| <FONT color="green">097</FONT> }<a name="line.97"></a> |
| <FONT color="green">098</FONT> <a name="line.98"></a> |
| <FONT color="green">099</FONT> @Override<a name="line.99"></a> |
| <FONT color="green">100</FONT> public synchronized void close() throws IOException {<a name="line.100"></a> |
| <FONT color="green">101</FONT> if (ds != null) {<a name="line.101"></a> |
| <FONT color="green">102</FONT> if (data != null) {<a name="line.102"></a> |
| <FONT color="green">103</FONT> flush();<a name="line.103"></a> |
| <FONT color="green">104</FONT> }<a name="line.104"></a> |
| <FONT color="green">105</FONT> ds.close();<a name="line.105"></a> |
| <FONT color="green">106</FONT> ds = null;<a name="line.106"></a> |
| <FONT color="green">107</FONT> }<a name="line.107"></a> |
| <FONT color="green">108</FONT> }<a name="line.108"></a> |
| <FONT color="green">109</FONT> <a name="line.109"></a> |
| <FONT color="green">110</FONT> private void copy(byte[] bytes, int offset, int length) {<a name="line.110"></a> |
| <FONT color="green">111</FONT> int index = data == null ? 0 : data.length;<a name="line.111"></a> |
| <FONT color="green">112</FONT> byte[] copy = new byte[length + index];<a name="line.112"></a> |
| <FONT color="green">113</FONT> if (data != null) {<a name="line.113"></a> |
| <FONT color="green">114</FONT> System.arraycopy(data, 0, copy, 0, index);<a name="line.114"></a> |
| <FONT color="green">115</FONT> }<a name="line.115"></a> |
| <FONT color="green">116</FONT> System.arraycopy(bytes, offset, copy, index, length);<a name="line.116"></a> |
| <FONT color="green">117</FONT> data = copy;<a name="line.117"></a> |
| <FONT color="green">118</FONT> }<a name="line.118"></a> |
| <FONT color="green">119</FONT> }<a name="line.119"></a> |
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| </PRE> |
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