Examples of org.apache.log4j.Logger

org.apache.log4j.Logger

This class is a minimal implementation of the original org.apache.log4j.Logger class (as found in log4j 1.2) delegating all calls to a {@link org.slf4j.Logger} instance.
@author Ceki Gülcü

  /**
   * Tests formatted results with an exception.
   * @throws Exception if parser can not be constructed or source is not a valid XML document.
   */
  public void testFormatWithNDC() throws Exception {
    Logger logger = Logger.getLogger("org.apache.log4j.xml.XMLLayoutTest");
    NDC.push("NDC goes here");


    LoggingEvent event =
      new LoggingEvent(
        "org.apache.log4j.Logger", logger, Level.INFO, "Hello, World", null);

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     * Tests problematic characters in multiple fields.
     * @throws Exception if parser can not be constructed or source is not a valid XML document.
     */
    public void testProblemCharacters() throws Exception {
      String problemName = "com.example.bar<>&\"'";
      Logger logger = Logger.getLogger(problemName);
      Level level = new ProblemLevel(problemName);
      Exception ex = new IllegalArgumentException(problemName);
      String threadName = Thread.currentThread().getName();
      Thread.currentThread().setName(problemName);
      NDC.push(problemName);

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    /**
      * Tests CDATA element within NDC content.  See bug 37560.
      */
    public void testNDCWithCDATA() throws Exception {
        Logger logger = Logger.getLogger("com.example.bar");
        Level level = Level.INFO;
        String ndcMessage ="<envelope><faultstring><![CDATA[The EffectiveDate]]></faultstring><envelope>";
        NDC.push(ndcMessage);
        LoggingEvent event =
          new LoggingEvent(

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    /**
      * Tests CDATA element within exception.  See bug 37560.
      */
    public void testExceptionWithCDATA() throws Exception {
        Logger logger = Logger.getLogger("com.example.bar");
        Level level = Level.INFO;
        String exceptionMessage ="<envelope><faultstring><![CDATA[The EffectiveDate]]></faultstring><envelope>";
        LoggingEvent event =
          new LoggingEvent(
            "com.example.bar", logger, level, "Hello, World", new Exception(exceptionMessage));

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    Thread.currentThread().setName("main");


    int i = -1; 
    NDC.push(dc); 
    MDC.put(key, o);
    Logger root = Logger.getRootLogger();


    logger.setLevel(Level.DEBUG);
    rootLogger.setLevel(Level.DEBUG);
    
    logger.log(XLevel.TRACE, "Message " + ++i);


    logger.setLevel(Level.TRACE);
    rootLogger.setLevel(Level.TRACE);
    
    logger.trace("Message " + ++i);
    root.trace("Message " + ++i);
    logger.debug("Message " + ++i);
    root.debug("Message " + ++i);
    logger.info("Message " + ++i);
    logger.warn("Message " + ++i);
    logger.log(XLevel.LETHAL, "Message " + ++i); //5
    
    Exception e = new Exception("Just testing");
    logger.debug("Message " + ++i, e);
    root.error("Message " + ++i, e);
    NDC.pop();
    MDC.remove(key);


    Thread.currentThread().setName(oldThreadName);
  }

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    TelnetAppender ta = new TelnetAppender();
    ta.setName("ta");
    ta.setPort(port);
    ta.setLayout(new PatternLayout("%p - %m"));
    ta.activateOptions();
    Logger l = Logger.getLogger("x");
    l.addAppender(ta);
    Thread t = new ReadThread();
    t.start();
    Thread.sleep(200);
    l.info("hi");
    Thread.sleep(1000);
    ta.close();
    Thread.sleep(200);
    t.interrupt();
    t.join();

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   * Serialize a logging event with ndc.
   * @throws Exception if exception during test.
   *
   */
  public void testSerializationNDC() throws Exception {
    Logger root = Logger.getRootLogger();
    NDC.push("ndc test");


    LoggingEvent event =
      new LoggingEvent(
        root.getClass().getName(), root, Level.INFO, "Hello, world.", null);
//    event.prepareForDeferredProcessing();


    int[] skip = new int[] { 352, 353, 354, 355, 356 };
    SerializationTestHelper.assertSerializationEquals(
      "witness/serialization/ndc.bin", event, skip, 237);

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   * Serialize a logging event with mdc.
   * @throws Exception if exception during test.
   *
   */
  public void testSerializationMDC() throws Exception {
    Logger root = Logger.getRootLogger();
    MDC.put("mdckey", "mdcvalue");


    LoggingEvent event =
      new LoggingEvent(
        root.getClass().getName(), root, Level.INFO, "Hello, world.", null);
//    event.prepareForDeferredProcessing();


    int[] skip = new int[] { 352, 353, 354, 355, 356 };
    SerializationTestHelper.assertSerializationEquals(
      "witness/serialization/mdc.bin", event, skip, 237);

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  /**
   *   Simple test of NTEventLogAppender.
   */
  public void testSimple() {
    BasicConfigurator.configure(new NTEventLogAppender());
    Logger logger = Logger.getLogger("org.apache.log4j.nt.NTEventLogAppenderTest");
    int i  = 0;
    logger.debug( "Message " + i++);
    logger.info( "Message " + i++);
    logger.warn( "Message " + i++);
    logger.error( "Message " + i++);
    logger.log(Level.FATAL, "Message " + i++);
    logger.debug("Message " + i++,  new Exception("Just testing."));
  }

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  public void tearDown() {
    LogManager.shutdown();
  }


  public void propertiesTest() {
    Logger root = Logger.getRootLogger();
    boolean rootIsConfigured = root.getAllAppenders().hasMoreElements();
    assertTrue(rootIsConfigured);
    Enumeration e = root.getAllAppenders();
    Appender appender = (Appender) e.nextElement();
    assertEquals(appender.getName(), "D3");
  }

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