org.apache.logging.log4j.util.Strings#LINE_SEPARATOR源码实例Demo

@Test
public void testClassName() {
    final Category category = Category.getInstance("TestCategory");
    final Layout<String> layout = PatternLayout.newBuilder().withPattern("%d %p %C{1.} [%t] %m%n").build();
    final ListAppender appender = new ListAppender("List2", null, layout, false, false);
    appender.start();
    category.setAdditivity(false);
    ((org.apache.logging.log4j.core.Logger) category.getLogger()).addAppender(appender);
    category.error("Test Message");
    final List<String> msgs = appender.getMessages();
    assertTrue("Incorrect number of messages. Expected 1 got " + msgs.size(), msgs.size() == 1);
    final String msg = msgs.get(0);
    appender.clear();
    final String threadName = Thread.currentThread().getName();
    final String expected = "ERROR o.a.l.CategoryTest [" + threadName + "] Test Message" + Strings.LINE_SEPARATOR;
    assertTrue("Incorrect message " + Strings.dquote(msg) + " expected " + Strings.dquote(expected), msg.endsWith(expected));
}
 

@Test
public void testClassName() {
    final Category category = Category.getInstance("TestCategory");
    final Layout<String> layout = PatternLayout.newBuilder().setPattern("%d %p %C{1.} [%t] %m%n").build();
    final ListAppender appender = new ListAppender("List2", null, layout, false, false);
    appender.start();
    category.setAdditivity(false);
    ((org.apache.logging.log4j.core.Logger) category.getLogger()).addAppender(appender);
    category.error("Test Message");
    final List<String> msgs = appender.getMessages();
    assertTrue("Incorrect number of messages. Expected 1 got " + msgs.size(), msgs.size() == 1);
    final String msg = msgs.get(0);
    appender.clear();
    final String threadName = Thread.currentThread().getName();
    final String expected = "ERROR o.a.l.CategoryTest [" + threadName + "] Test Message" + Strings.LINE_SEPARATOR;
    assertTrue("Incorrect message " + Strings.dquote(msg) + " expected " + Strings.dquote(expected), msg.endsWith(expected));
}
 

@Test
public void testPatternTruncateFromBeginning() {
    final List<PatternFormatter> formatters = parser.parse(patternTruncateFromBeginning);
    assertNotNull(formatters);
    final LogEvent event = Log4jLogEvent.newBuilder() //
            .setLoggerName("org.apache.logging.log4j.PatternParserTest") //
            .setLoggerFqcn(Logger.class.getName()) //
            .setLevel(Level.INFO) //
            .setMessage(new SimpleMessage("Hello, world")) //
            .setThreadName("Thread1") //
            .setTimeMillis(System.currentTimeMillis()) //
            .build();
    final StringBuilder buf = new StringBuilder();
    for (final PatternFormatter formatter : formatters) {
        formatter.format(event, buf);
    }
    final String str = buf.toString();
    final String expected = "INFO  rTest Hello, world" + Strings.LINE_SEPARATOR;
    assertTrue("Expected to end with: " + expected + ". Actual: " + str, str.endsWith(expected));
}
 

@Test
public void testPatternTruncateFromEnd() {
    final List<PatternFormatter> formatters = parser.parse(patternTruncateFromEnd);
    assertNotNull(formatters);
    final LogEvent event = Log4jLogEvent.newBuilder() //
            .setLoggerName("org.apache.logging.log4j.PatternParserTest") //
            .setLoggerFqcn(Logger.class.getName()) //
            .setLevel(Level.INFO) //
            .setMessage(new SimpleMessage("Hello, world")) //
            .setThreadName("Thread1") //
            .setTimeMillis(System.currentTimeMillis()) //
            .build();
    final StringBuilder buf = new StringBuilder();
    for (final PatternFormatter formatter : formatters) {
        formatter.format(event, buf);
    }
    final String str = buf.toString();
    final String expected = "INFO  org.a Hello, world" + Strings.LINE_SEPARATOR;
    assertTrue("Expected to end with: " + expected + ". Actual: " + str, str.endsWith(expected));
}
 

@Test
public void testScriptPatternSelector() throws Exception {
    final org.apache.logging.log4j.Logger logger = LogManager.getLogger("TestScriptPatternSelector");
    final org.apache.logging.log4j.Logger logger2 = LogManager.getLogger("NoLocation");
    logger.traceEntry();
    logger.info("Hello World");
    logger2.info("No location information");
    logger.traceExit();
    final ListAppender app = (ListAppender) context.getRequiredAppender("List2");
    assertNotNull("No ListAppender", app);
    final List<String> messages = app.getMessages();
    assertNotNull("No Messages", messages);
    assertTrue("Incorrect number of messages. Expected 4, Actual " + messages.size() + ": " + messages, messages.size() == 4);
    String expect = "[TRACE] TestScriptPatternSelector ====== " +
            "o.a.l.l.c.PatternSelectorTest.testScriptPatternSelector:62 Enter ======" + Strings.LINE_SEPARATOR;
    assertEquals(expect, messages.get(0));
    expect = "[INFO ] TestScriptPatternSelector o.a.l.l.c.PatternSelectorTest.testScriptPatternSelector.63 " +
            "Hello World" + Strings.LINE_SEPARATOR;
    assertEquals(expect, messages.get(1));
    assertEquals("[INFO ] NoLocation No location information" + Strings.LINE_SEPARATOR, messages.get(2));
    app.clear();
}
 

@Test
public void testJavaScriptPatternSelector() throws Exception {
    final org.apache.logging.log4j.Logger logger = LogManager.getLogger("TestJavaScriptPatternSelector");
    final org.apache.logging.log4j.Logger logger2 = LogManager.getLogger("JavascriptNoLocation");
    logger.traceEntry();
    logger.info("Hello World");
    logger2.info("No location information");
    logger.traceExit();
    final ListAppender app = (ListAppender) context.getRequiredAppender("List3");
    assertNotNull("No ListAppender", app);
    final List<String> messages = app.getMessages();
    assertNotNull("No Messages", messages);
    assertTrue("Incorrect number of messages. Expected 4, Actual " + messages.size() + ": " + messages, messages.size() == 4);
    String expect = "[TRACE] TestJavaScriptPatternSelector ====== " +
            "o.a.l.l.c.PatternSelectorTest.testJavaScriptPatternSelector:85 Enter ======" + Strings.LINE_SEPARATOR;
    assertEquals(expect, messages.get(0));
    expect = "[INFO ] TestJavaScriptPatternSelector " +
            "o.a.l.l.c.PatternSelectorTest.testJavaScriptPatternSelector.86 Hello World" + Strings.LINE_SEPARATOR;
    assertEquals(expect, messages.get(1));
    assertEquals("[INFO ] JavascriptNoLocation No location information" + Strings.LINE_SEPARATOR, messages.get(2));
    app.clear();
}
 

@Test
public void testHostname() {
    final org.apache.logging.log4j.Logger testLogger = context.getLogger("org.apache.logging.log4j.hosttest");
    testLogger.debug("Hello, {}", "World");
    final List<String> msgs = host.getMessages();
    assertThat(msgs, hasSize(1));
    String expected = NetUtils.getLocalHostname() + Strings.LINE_SEPARATOR;
    assertThat(msgs.get(0), endsWith(expected));
    assertNotNull("No Host FileAppender file name", hostFile.getFileName());
    expected = "target/" + NetUtils.getLocalHostname() + ".log";
    String name = hostFile.getFileName();
    assertEquals("Incorrect HostFile FileAppender file name - expected " + expected + " actual - " + name, name,
        expected);
    name = hostFile.getFilePattern();
    assertNotNull("No file pattern", name);
    expected = "target/" + NetUtils.getLocalHostname() + "-%d{MM-dd-yyyy}-%i.log";
    assertEquals("Incorrect HostFile FileAppender file pattern - expected " + expected + " actual - " + name, name,
        expected);

}
 

private void assertMessage(final String string, final InMemoryAppender app, final String header) {
    final LogEvent event = Log4jLogEvent.newBuilder() //
            .setLoggerName("TestLogger") //
            .setLoggerFqcn(InMemoryAppenderTest.class.getName()) //
            .setLevel(Level.INFO) //
            .setMessage(new SimpleMessage("Test")) //
            .build();
    app.start();
    assertTrue("Appender did not start", app.isStarted());
    app.append(event);
    app.append(event);
    final String msg = app.toString();
    assertNotNull("No message", msg);
    final String expectedHeader = header == null ? "" : header;
    final String expected = expectedHeader + "Test" + Strings.LINE_SEPARATOR + "Test" + Strings.LINE_SEPARATOR;
    assertTrue("Incorrect message: " + msg, msg.equals(expected));
    app.stop();
    assertFalse("Appender did not stop", app.isStarted());
}
 

/**
 * Test the custom pattern
 */
@Test
public void testCustomPattern() {
    final List<PatternFormatter> formatters = parser.parse(customPattern);
    assertNotNull(formatters);
    final StringMap mdc = ContextDataFactory.createContextData();
    mdc.putValue("loginId", "Fred");
    final Throwable t = new Throwable();
    final StackTraceElement[] elements = t.getStackTrace();
    final Log4jLogEvent event = Log4jLogEvent.newBuilder() //
            .setLoggerName("org.apache.logging.log4j.PatternParserTest") //
            .setMarker(MarkerManager.getMarker("TEST")) //
            .setLoggerFqcn(Logger.class.getName()) //
            .setLevel(Level.INFO) //
            .setMessage(new SimpleMessage("Hello, world")) //
            .setContextData(mdc) //
            .setThreadName("Thread1") //
            .setSource(elements[0])
            .setTimeMillis(System.currentTimeMillis()).build();
    final StringBuilder buf = new StringBuilder();
    for (final PatternFormatter formatter : formatters) {
        formatter.format(event, buf);
    }
    final String str = buf.toString();
    final String expected = "INFO  [PatternParserTest        :104 ] - Hello, world" + Strings.LINE_SEPARATOR;
    assertTrue("Expected to end with: " + expected + ". Actual: " + str, str.endsWith(expected));
}
 

/**
 * Private constructor.
 */
private LineSeparatorPatternConverter() {
    super("Line Sep", "lineSep");
    lineSep = Strings.LINE_SEPARATOR;
}
 

@Override
public String toSerializable(final LogEvent event) {
    return event.getMessage().getFormattedMessage() + Strings.LINE_SEPARATOR;
}
 

/**
 * Constructs the options for printing stack trace.
 *
 * @param lines
 *            The number of lines.
 * @param separator
 *            The stack trace separator.
 * @param ignorePackages
 *            The packages to filter.
 * @param textRenderer
 *            The ANSI renderer
 * @param suffix
 */
protected ThrowableFormatOptions(final int lines, final String separator, final List<String> ignorePackages,
        final TextRenderer textRenderer, final String suffix) {
    this.lines = lines;
    this.separator = separator == null ? Strings.LINE_SEPARATOR : separator;
    this.ignorePackages = ignorePackages;
    this.textRenderer = textRenderer == null ? PlainTextRenderer.getInstance() : textRenderer;
    this.suffix = suffix;
}