Examples of org.apache.log4j.spi.LoggingEvent

org.apache.log4j.spi.LoggingEvent
The internal representation of logging events. When an affirmative decision is made to log then a LoggingEvent instance is created. This instance is passed around to the different log4j components.
This class is of concern to those wishing to extend log4j.

Writers of log4j components such as appenders and receivers should be aware of that some of the LoggingEvent fields are initialized lazily. Therefore, an appender wishing to output data to be later correctly read by a receiver, must initialize "lazy" fields prior to writing them out. See the {@link #prepareForDeferredProcessing()} method for the exact list.
Moreover, in the absence of certain fields, receivers must set the values of null fields to a default non-null value. For example, in the absence of the locationInfo data, the locationInfo field should be set to {@link org.apache.log4j.spi.location.LocationInfo#NA_LOCATION_INFO LocationInfo.NA_LOCATION_INFO}. @author Ceki Gülcü @author James P. Cakalic

  //System.err.println("-------------------------Finalize called");
  // System.err.flush();
  //}


  public void run() {
  LoggingEvent event;
  Category remoteCategory;
  String strClientName;


  // Get the client name.
  InetAddress addr = socket.getInetAddress();

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   * Tests formatted results.
   * @throws Exception if parser can not be constructed or source is not a valid XML document.
   */
  public void testFormat() throws Exception {
    Logger logger = Logger.getLogger("org.apache.log4j.xml.XMLLayoutTest");
    LoggingEvent event =
      new LoggingEvent(
        "org.apache.log4j.Logger", logger, Level.INFO, "Hello, World", null);
    XMLLayout layout = (XMLLayout) createLayout();
    String result = layout.format(event);
    Element parsedResult = parse(result);
    checkEventElement(parsedResult, event);

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   * @throws Exception if parser can not be constructed or source is not a valid XML document.
   */
  public void testFormatWithException() throws Exception {
    Logger logger = Logger.getLogger("org.apache.log4j.xml.XMLLayoutTest");
    Exception ex = new IllegalArgumentException("'foo' is not a valid name");
    LoggingEvent event =
      new LoggingEvent(
        "org.apache.log4j.Logger", logger, Level.INFO, "Hello, World", ex);
    XMLLayout layout = (XMLLayout) createLayout();
    String result = layout.format(event);
    Element parsedResult = parse(result);
    checkEventElement(parsedResult, event);

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   */
  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);
    XMLLayout layout = (XMLLayout) createLayout();
    String result = layout.format(event);
    NDC.pop();

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      Hashtable mdcMap = MDC.getContext();
      if (mdcMap != null) {
          mdcMap.clear();
      }
      MDC.put(problemName, problemName);
      LoggingEvent event =
        new LoggingEvent(
          problemName, logger, level, problemName, ex);
      XMLLayout layout = (XMLLayout) createLayout();
      layout.setProperties(true);
      String result = layout.format(event);
      mdcMap = MDC.getContext();

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    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(
            "com.example.bar", logger, level, "Hello, World", null);
        Layout layout = createLayout();
        String result = layout.format(event);
        NDC.clear();
        Element parsedResult = parse(result);

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      */
    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));
        Layout layout = createLayout();
        String result = layout.format(event);
        Element parsedResult = parse(result);
        NodeList throwables = parsedResult.getElementsByTagName("log4j:throwable");

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            greeter.run();
            rootLogger.error("That's all folks.");
        }
        async.close();
        Vector events = blockableAppender.getVector();
        LoggingEvent initialEvent = (LoggingEvent) events.get(0);
        LoggingEvent discardEvent = (LoggingEvent) events.get(events.size() - 1);
        PatternLayout layout = new PatternLayout();
        layout.setConversionPattern("%C:%L %m%n");
        layout.activateOptions();
        String initialStr = layout.format(initialEvent);
        assertEquals(AsyncAppenderTestCase.class.getName(),

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            greeter.run();
            rootLogger.error("That's all folks.");
        }
        async.close();
        Vector events = blockableAppender.getVector();
        LoggingEvent initialEvent = (LoggingEvent) events.get(0);
        LoggingEvent discardEvent = (LoggingEvent) events.get(events.size() - 1);
        PatternLayout layout = new PatternLayout();
        layout.setConversionPattern("%C:%L %m%n");
        layout.activateOptions();
        String initialStr = layout.format(initialEvent);
        assertEquals("?:? ", initialStr.substring(0, 4));

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            rootLogger.info(buf);
            buf.append(", World.");
        }
        async.close();
        Vector events = blockableAppender.getVector();
        LoggingEvent event = (LoggingEvent) events.get(0);
        PatternLayout layout = new PatternLayout();
        layout.setConversionPattern("%m");
        layout.activateOptions();
        String msg = layout.format(event);
        assertEquals("Hello", msg);

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