1 |
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2 | package de.ugoe.cs.autoquest.log4j;
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3 |
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4 | import java.util.logging.Level;
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5 |
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6 | import org.apache.log4j.Logger;
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7 | import org.apache.log4j.PropertyConfigurator;
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8 |
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9 | import de.ugoe.cs.util.console.Console;
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10 | import de.ugoe.cs.util.console.listener.ICommandListener;
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11 | import de.ugoe.cs.util.console.listener.IErrorListener;
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12 | import de.ugoe.cs.util.console.listener.IExceptionListener;
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13 | import de.ugoe.cs.util.console.listener.ITraceListener;
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14 |
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15 | /**
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16 | * <p>
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17 | * Implements logging based on the log4j API.
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18 | * </p>
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19 | *
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20 | * @author Steffen Herbold
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21 | * @version 1.0
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22 | */
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23 | public class Log4JLogger implements IErrorListener, ITraceListener, IExceptionListener,
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24 | ICommandListener
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25 | {
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26 |
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27 | /**
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28 | * <p>
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29 | * Reference to the logger.
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30 | * </p>
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31 | */
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32 | Logger logger;
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33 |
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34 | /**
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35 | * <p>
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36 | * This is the trace level according to the Java logger API. We use this instead of the log4j
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37 | * levels themselves for the logging.
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38 | * </p>
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39 | */
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40 | Level traceLevel;
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41 |
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42 | /**
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43 | * <p>
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44 | * Constructor. Creates a new Log4JLogger and registers the implemented listener with the
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45 | * {@link Console}.
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46 | * </p>
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47 | * @param traceLevel tracing level
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48 | */
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49 | public Log4JLogger(Level traceLevel) {
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50 | PropertyConfigurator.configure("data/log4j.properties");
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51 | logger = Logger.getLogger("de.ugoe.cs.autoquest");
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52 | logger.setLevel(convertToLog4JLevel(traceLevel));
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53 | this.traceLevel = traceLevel;
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54 | Console.getInstance().registerErrorListener(this);
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55 | Console.getInstance().registerTraceListener(this);
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56 | Console.getInstance().registerExceptionListener(this);
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57 | Console.getInstance().registerCommandListener(this);
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58 | }
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59 |
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60 | /*
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61 | * (non-Javadoc)
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62 | *
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63 | * @see de.ugoe.cs.util.console.listener.ICommandListener#commandNotification (java.lang.String)
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64 | */
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65 | @Override
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66 | public void commandNotification(String command) {
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67 | logger.info("Command executed: " + command);
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68 | }
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69 |
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70 | /*
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71 | * (non-Javadoc)
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72 | *
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73 | * @see de.ugoe.cs.util.console.listener.IExceptionListener#printStacktrace(java
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74 | * .lang.Exception)
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75 | */
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76 | @Override
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77 | public void logException(Exception e) {
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78 | logger.error("", e);
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79 | }
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80 |
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81 | /*
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82 | * (non-Javadoc)
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83 | *
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84 | * @see de.ugoe.cs.util.console.listener.ITraceListener#traceMsg(java.lang.String )
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85 | */
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86 | @Override
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87 | public void traceMsg(String traceMessage, Level level) {
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88 | if( level.intValue()>=traceLevel.intValue()) {
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89 | logger.log(convertToLog4JLevel(level), traceMessage);
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90 | }
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91 | }
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92 |
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93 | /*
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94 | * (non-Javadoc)
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95 | *
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96 | * @see de.ugoe.cs.util.console.listener.IErrorListener#errorMsg(java.lang.String )
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97 | */
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98 | @Override
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99 | public void errorMsg(String errMessage) {
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100 | logger.error(errMessage);
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101 | }
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102 |
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103 | /**
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104 | * <p>
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105 | * Converts the log level described by {@link Level} into a {@link org.apache.log4j.Level}.
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106 | * </p>
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107 | *
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108 | * @param level
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109 | * java.util.logger.Level severity
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110 | * @return org.apache.log4j.Level severity
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111 | */
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112 | private org.apache.log4j.Level convertToLog4JLevel(Level level) {
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113 | if (level == Level.OFF) {
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114 | return org.apache.log4j.Level.OFF;
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115 | }
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116 | if (level == Level.SEVERE) {
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117 | return org.apache.log4j.Level.FATAL;
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118 | }
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119 | if (level == Level.WARNING) {
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120 | return org.apache.log4j.Level.WARN;
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121 | }
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122 | if (level == Level.INFO || level == Level.CONFIG) {
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123 | return org.apache.log4j.Level.INFO;
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124 | }
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125 | // remaining levels: FINE, FINER, FINEST, ALL
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126 | return org.apache.log4j.Level.ALL;
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127 | }
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128 | }
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