org.apache.logging.log4j.core.appender.ConsoleAppender Java Examples

private static Logger configureLog4j() {
    LoggerContext context = (LoggerContext) LogManager.getContext();
    Configuration config = context.getConfiguration();

    PatternLayout layout = PatternLayout.createLayout("%m%n", null, null, Charset.defaultCharset(), false, false, null, null);
    Appender appender = ConsoleAppender.createAppender(layout, null, null, "CONSOLE_APPENDER", null, null);
    appender.start();
    AppenderRef ref = AppenderRef.createAppenderRef("CONSOLE_APPENDER", null, null);
    AppenderRef[] refs = new AppenderRef[]{ref};
    LoggerConfig loggerConfig = LoggerConfig.createLogger("false", Level.INFO, "CONSOLE_LOGGER", "com", refs, null, null, null);
    loggerConfig.addAppender(appender, null, null);

    config.addAppender(appender);
    config.addLogger("Main.class", loggerConfig);
    context.updateLoggers(config);
    return LogManager.getContext().getLogger("Main.class");
}
 

/**
 * Constructor to create the default configuration.
 */
public CustomConfiguration(final LoggerContext loggerContext, final ConfigurationSource source) {
    super(loggerContext, source);

    setName(CONFIG_NAME);
    final Layout<? extends Serializable> layout = PatternLayout.newBuilder()
            .setPattern(DEFAULT_PATTERN)
            .setConfiguration(this)
            .build();
    final Appender appender = ConsoleAppender.createDefaultAppenderForLayout(layout);
    appender.start();
    addAppender(appender);
    final LoggerConfig root = getRootLogger();
    root.addAppender(appender, null, null);

    final String levelName = PropertiesUtil.getProperties().getStringProperty(DEFAULT_LEVEL);
    final Level level = levelName != null && Level.valueOf(levelName) != null ?
            Level.valueOf(levelName) : Level.ERROR;
    root.setLevel(level);
}
 

@Test
public void givenDefaultLog4j2Environment_whenProgrammaticallyConfigured_thenLogsCorrectly() {
    ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder();
    AppenderComponentBuilder console = builder.newAppender("Stdout", "CONSOLE")
            .addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
    console.add(builder.newLayout("PatternLayout")
            .addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
    builder.add(console);
    builder.add(builder.newLogger("com", Level.DEBUG)
            .add(builder.newAppenderRef("Stdout"))
            .addAttribute("additivity", false));
    builder.add(builder.newRootLogger(Level.ERROR)
            .add(builder.newAppenderRef("Stdout")));
    Configurator.initialize(builder.build());
    LogPrinter logPrinter = new LogPrinter();
    logPrinter.printlog();
}
 

private <T extends Log4j1Configuration> Appender createAppender(String name, Layout layout, Filter filter,
        String level, String target, T configuration) {
    org.apache.logging.log4j.core.Layout<?> consoleLayout = null;

    if (layout instanceof LayoutWrapper) {
        consoleLayout = ((LayoutWrapper) layout).getLayout();
    } else if (layout != null) {
        consoleLayout = new LayoutAdapter(layout);
    }
    org.apache.logging.log4j.core.Filter consoleFilter = buildFilters(level, filter);
    ConsoleAppender.Target consoleTarget = SYSTEM_ERR.equals(target)
            ? ConsoleAppender.Target.SYSTEM_ERR : ConsoleAppender.Target.SYSTEM_OUT;
    return new AppenderWrapper(ConsoleAppender.newBuilder()
            .setName(name)
            .setTarget(consoleTarget)
            .setLayout(consoleLayout)
            .setFilter(consoleFilter)
            .setConfiguration(configuration)
            .build());
}
 

private static Logger configureLog4j() {
    LoggerContext context = (LoggerContext) LogManager.getContext();
    Configuration config = context.getConfiguration();

    PatternLayout layout = PatternLayout.createLayout("%m%n", null, null, Charset.defaultCharset(), false, false, null, null);
    Appender appender = ConsoleAppender.createAppender(layout, null, null, "CONSOLE_APPENDER", null, null);
    appender.start();
    AppenderRef ref = AppenderRef.createAppenderRef("CONSOLE_APPENDER", null, null);
    AppenderRef[] refs = new AppenderRef[]{ref};
    LoggerConfig loggerConfig = LoggerConfig.createLogger("false", Level.INFO, "CONSOLE_LOGGER", "com", refs, null, null, null);
    loggerConfig.addAppender(appender, null, null);

    config.addAppender(appender);
    config.addLogger("Main.class", loggerConfig);
    context.updateLoggers(config);
    return LogManager.getContext().getLogger("Main.class");
}
 

/**
 * Disables all log4j2 ConsoleAppender's by modifying log4j configuration dynamically.
 * Must only be used during early startup
 * @return true if ok or else false if something happened, e.g. log4j2 classes were not in classpath
 */
@SuppressForbidden(reason = "Legitimate log4j2 access")
public static boolean muteConsole() {
  try {
    if (!isLog4jActive()) {
      logNotSupported("Could not mute logging to console.");
      return false;
    }
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration config = ctx.getConfiguration();
    LoggerConfig loggerConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
    Map<String, Appender> appenders = loggerConfig.getAppenders();
    appenders.forEach((name, appender) -> {
      if (appender instanceof ConsoleAppender) {
        loggerConfig.removeAppender(name);
        ctx.updateLoggers();
      }
    });
    return true;
  } catch (Exception e) {
    logNotSupported("Could not mute logging to console.");
    return false;
  }
}
 

/**
 * Configures the Log4j2 console appender(s), using the specified verbosity:
 * <ul>
 *   <li>{@code -vvv} : enable TRACE level</li>
 *   <li>{@code -vv} : enable DEBUG level</li>
 *   <li>{@code -v} : enable INFO level</li>
 *   <li>(not specified) : enable WARN level</li>
 * </ul>
 */
public void configureLoggers() {
    Level level = getTopLevelCommandLoggingMixin(mixee).calcLogLevel();

    LoggerContext loggerContext = LoggerContext.getContext(false);
    LoggerConfig rootConfig = loggerContext.getConfiguration().getRootLogger();
    for (Appender appender : rootConfig.getAppenders().values()) {
        if (appender instanceof ConsoleAppender) {
            rootConfig.removeAppender(appender.getName());
            rootConfig.addAppender(appender, level, null);
        }
    }
    if (rootConfig.getLevel().isMoreSpecificThan(level)) {
        rootConfig.setLevel(level);
    }
    loggerContext.updateLoggers(); // apply the changes
}
 

protected void setToDefault() {
    // LOG4J2-1176 facilitate memory leak investigation
    setName(DefaultConfiguration.DEFAULT_NAME + "@" + Integer.toHexString(hashCode()));
    final Layout<? extends Serializable> layout = PatternLayout.newBuilder()
            .setPattern(DefaultConfiguration.DEFAULT_PATTERN)
            .setConfiguration(this)
            .build();
    final Appender appender = ConsoleAppender.createDefaultAppenderForLayout(layout);
    appender.start();
    addAppender(appender);
    final LoggerConfig rootLoggerConfig = getRootLogger();
    rootLoggerConfig.addAppender(appender, null, null);

    final Level defaultLevel = Level.ERROR;
    final String levelName = PropertiesUtil.getProperties().getStringProperty(DefaultConfiguration.DEFAULT_LEVEL,
            defaultLevel.name());
    final Level level = Level.valueOf(levelName);
    rootLoggerConfig.setLevel(level != null ? level : defaultLevel);
}
 

@Test
public void testBuilder() throws Exception {
    final ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder();
    builder.setStatusLevel(Level.ERROR);
    builder.setConfigurationName("BuilderTest");
    builder.add(builder.newFilter("ThresholdFilter", Filter.Result.ACCEPT, Filter.Result.NEUTRAL)
            .addAttribute("level", Level.DEBUG));
    final AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE").addAttribute("target",
            ConsoleAppender.Target.SYSTEM_OUT);
    appenderBuilder.add(builder.newLayout("PatternLayout").
            addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
    appenderBuilder.add(builder.newFilter("MarkerFilter", Filter.Result.DENY,
            Filter.Result.NEUTRAL).addAttribute("marker", "FLOW"));
    builder.add(appenderBuilder);
    builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG).
            add(builder.newAppenderRef("Stdout")).
            addAttribute("additivity", false));
    builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout")));
    ctx = Configurator.initialize(builder.build());
    final Configuration config = ctx.getConfiguration();
    assertNotNull("No configuration", config);
    assertEquals("Unexpected Configuration", "BuilderTest", config.getName());
    assertThat(config.getAppenders(), hasSize(equalTo(1)));
}
 

@Test
void testSoutJsonTempJson() {
    Configuration configuration = getLogConfig(Map.of("log_format_sout", "json"));

    assertThat(configuration.getAppenders().values()).hasSize(2);
    Optional<ConsoleAppender> consoleAppender = configuration.getAppenders().values().stream()
        .filter(ConsoleAppender.class::isInstance)
        .map(ConsoleAppender.class::cast)
        .findAny();
    assertThat(consoleAppender).isNotEmpty();
    assertThat(consoleAppender.get().getLayout()).isInstanceOf(EcsLayout.class);

    Optional<RollingFileAppender> fileAppender = configuration.getAppenders().values().stream()
        .filter(RollingFileAppender.class::isInstance)
        .map(RollingFileAppender.class::cast)
        .findAny();
    assertThat(fileAppender).isNotEmpty();
    assertThat(fileAppender.get().getLayout()).isInstanceOf(EcsLayout.class);
}
 

@Test
void testSoutPlainTextTempJson() {
    Configuration configuration = getLogConfig(Map.of());

    assertThat(configuration.getAppenders().values()).hasSize(2);
    Optional<ConsoleAppender> consoleAppender = configuration.getAppenders().values().stream()
        .filter(ConsoleAppender.class::isInstance)
        .map(ConsoleAppender.class::cast)
        .findAny();
    assertThat(consoleAppender).isNotEmpty();
    assertThat(consoleAppender.get().getLayout()).isInstanceOf(PatternLayout.class);

    Optional<RollingFileAppender> fileAppender = configuration.getAppenders().values().stream()
        .filter(RollingFileAppender.class::isInstance)
        .map(RollingFileAppender.class::cast)
        .findAny();
    assertThat(fileAppender).isNotEmpty();
    assertThat(fileAppender.get().getLayout()).isInstanceOf(EcsLayout.class);
}
 

private void addTestFixtures(final String name, final ConfigurationBuilder<BuiltConfiguration> builder) {
    builder.setConfigurationName(name);
    builder.setStatusLevel(Level.ERROR);
    builder.setShutdownTimeout(5000, TimeUnit.MILLISECONDS);
    builder.add(builder.newScriptFile("target/test-classes/scripts/filter.groovy").addIsWatched(true));
    builder.add(builder.newFilter("ThresholdFilter", Filter.Result.ACCEPT, Filter.Result.NEUTRAL)
            .addAttribute("level", Level.DEBUG));

    final AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE").addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
    appenderBuilder.add(builder.newLayout("PatternLayout").
            addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
    appenderBuilder.add(builder.newFilter("MarkerFilter", Filter.Result.DENY,
            Filter.Result.NEUTRAL).addAttribute("marker", "FLOW"));
    builder.add(appenderBuilder);

    builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG, true).
                add(builder.newAppenderRef("Stdout")).
                addAttribute("additivity", false));
    builder.add(builder.newLogger("org.apache.logging.log4j.core").
                add(builder.newAppenderRef("Stdout")));
    builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout")));

    builder.addProperty("MyKey", "MyValue");
    builder.add(builder.newCustomLevel("Panic", 17));
    builder.setPackages("foo,bar");
}
 

private ConfigurationBuilder<BuiltConfiguration> buildConfigurationBuilder(final String filePattern) {
    final ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder();
    builder.setConfigurationName("LOG4J2-1964 demo");
    builder.setStatusLevel(Level.ERROR);
    // @formatter:off
    builder.add(builder.newAppender("consoleLog", "Console")
        .addAttribute("target", ConsoleAppender.Target.SYSTEM_ERR));
    builder.add(builder.newAppender("fooAppender", "RollingFile")
            .addAttribute("fileName", "target/rolling-update-date/foo.log")
            .addAttribute("filePattern", filePattern)
            .addComponent(builder.newComponent("SizeBasedTriggeringPolicy")
                    .addAttribute("size", "10MB")));
    builder.add(builder.newRootLogger(Level.INFO)
            .add(builder.newAppenderRef("consoleLog"))
            .add(builder.newAppenderRef("fooAppender")));
    // @formatter:on
    return builder;
}
 

public static Configuration addTestFixtures(final String name, final ConfigurationBuilder<BuiltConfiguration> builder) {
    builder.setConfigurationName(name);
    builder.setStatusLevel(Level.ERROR);
    builder.add(builder.newScriptFile("target/test-classes/scripts/filter.groovy").addIsWatched(true));
    builder.add(builder.newFilter("ThresholdFilter", Filter.Result.ACCEPT, Filter.Result.NEUTRAL)
            .addAttribute("level", Level.DEBUG));

    final AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE").addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
    appenderBuilder.add(builder.
            newLayout("PatternLayout").
            addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
    appenderBuilder.add(builder.
            newFilter("MarkerFilter", Filter.Result.DENY, Filter.Result.NEUTRAL).
            addAttribute("marker", "FLOW"));
    builder.add(appenderBuilder);

    builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG, true).
                add(builder.newAppenderRef("Stdout")).
                addAttribute("additivity", false));
    builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout")));

    builder.add(builder.newCustomLevel("Panic", 17));

    return builder.build();
}
 

private Layout<?> testConsole(final String configResource) throws Exception {
    final Configuration configuration = getConfiguration(configResource);
    final String name = "Console";
    final ConsoleAppender appender = configuration.getAppender(name);
    assertNotNull("Missing appender '" + name + "' in configuration " + configResource + " → " + configuration,
            appender);
    assertEquals(Target.SYSTEM_ERR, appender.getTarget());
    //
    final LoggerConfig loggerConfig = configuration.getLoggerConfig("com.example.foo");
    assertNotNull(loggerConfig);
    assertEquals(Level.DEBUG, loggerConfig.getLevel());
    configuration.start();
    configuration.stop();
    return appender.getLayout();
}
 

@Test
public void testHostname() {
    final ConsoleAppender app = context.getRequiredAppender("console", ConsoleAppender.class);
    final Layout<?> layout = app.getLayout();
    assertNotNull("No Layout", layout);
    assertTrue("Layout is not a PatternLayout", layout instanceof PatternLayout);
    final String pattern = ((PatternLayout) layout).getConversionPattern();
    assertNotNull("No conversion pattern", pattern);
    assertTrue("No filters", pattern.contains("org.junit,org.apache.maven,org.eclipse,sun.reflect,java.lang.reflect"));
}
 

public void configure() {
    PatternLayout.Builder patternBuilder = PatternLayout.newBuilder();
    patternBuilder.withPattern("%d %p %c{1.}: %m%n");
    PatternLayout layout = patternBuilder.build();

    ConsoleAppender consoleAppender = ConsoleAppender.createDefaultAppenderForLayout(layout);
    consoleAppender.start();

    Configuration configuration = ((LoggerContext) LogManager.getContext(false)).getConfiguration();

    LoggerConfig rootLogger = configuration.getRootLogger();
    rootLogger.setLevel(Level.INFO);
    rootLogger.addAppender(consoleAppender, Level.INFO, null);
}
 

private void buildConsoleAppender(final String appenderName) {
    final AppenderComponentBuilder appenderBuilder = builder.newAppender(appenderName, ConsoleAppender.PLUGIN_NAME);
    final String targetValue = getLog4jAppenderValue(appenderName, "Target", "System.out");
    if (targetValue != null) {
        final ConsoleAppender.Target target;
        switch (targetValue) {
        case "System.out":
            target = ConsoleAppender.Target.SYSTEM_OUT;
            break;
        case "System.err":
            target = ConsoleAppender.Target.SYSTEM_ERR;
            break;
        default:
            reportWarning("Unknown value for console Target: " + targetValue);
            target = null;
        }
        if (target != null) {
            appenderBuilder.addAttribute("target", target);
        }
    }
    buildAttribute(appenderName, appenderBuilder, "Follow", "follow");
    if (FALSE.equalsIgnoreCase(getLog4jAppenderValue(appenderName, "ImmediateFlush"))) {
        reportWarning("ImmediateFlush=false is not supported on Console appender");
    }
    buildAppenderLayout(appenderName, appenderBuilder);
    builder.add(appenderBuilder);
}
 

private void validate(final Configuration config) {
    assertNotNull(config);
    assertNotNull(config.getName());
    assertFalse(config.getName().isEmpty());
    assertNotNull("No configuration created", config);
    assertEquals("Incorrect State: " + config.getState(), config.getState(), LifeCycle.State.STARTED);
    final Map<String, Appender> appenders = config.getAppenders();
    assertNotNull(appenders);
    assertTrue("Incorrect number of Appenders: " + appenders.size(), appenders.size() == 1);
    final ConsoleAppender consoleAppender = (ConsoleAppender)appenders.get("Stdout");
    final PatternLayout gelfLayout = (PatternLayout)consoleAppender.getLayout();
    final Map<String, LoggerConfig> loggers = config.getLoggers();
    assertNotNull(loggers);
    assertTrue("Incorrect number of LoggerConfigs: " + loggers.size(), loggers.size() == 2);
    final LoggerConfig rootLoggerConfig = loggers.get("");
    assertEquals(Level.ERROR, rootLoggerConfig.getLevel());
    assertFalse(rootLoggerConfig.isIncludeLocation());
    final LoggerConfig loggerConfig = loggers.get("org.apache.logging.log4j");
    assertEquals(Level.DEBUG, loggerConfig.getLevel());
    assertTrue(loggerConfig.isIncludeLocation());
    final Filter filter = config.getFilter();
    assertNotNull("No Filter", filter);
    assertTrue("Not a Threshold Filter", filter instanceof ThresholdFilter);
    final List<CustomLevelConfig> customLevels = config.getCustomLevels();
    assertNotNull("No CustomLevels", filter);
    assertEquals(1, customLevels.size());
    final CustomLevelConfig customLevel = customLevels.get(0);
    assertEquals("Panic", customLevel.getLevelName());
    assertEquals(17, customLevel.getIntLevel());
    final Logger logger = LogManager.getLogger(getClass());
    logger.info("Welcome to Log4j!");
}
 

private void buildConsoleAppender(final String appenderName) {
    final AppenderComponentBuilder appenderBuilder = builder.newAppender(appenderName, ConsoleAppender.PLUGIN_NAME);
    final String targetValue = getLog4jAppenderValue(appenderName, "Target", "System.out");
    if (targetValue != null) {
        final ConsoleAppender.Target target;
        switch (targetValue) {
        case "System.out":
            target = ConsoleAppender.Target.SYSTEM_OUT;
            break;
        case "System.err":
            target = ConsoleAppender.Target.SYSTEM_ERR;
            break;
        default:
            reportWarning("Unknown value for console Target: " + targetValue);
            target = null;
        }
        if (target != null) {
            appenderBuilder.addAttribute("target", target);
        }
    }
    buildAttribute(appenderName, appenderBuilder, "Follow", "follow");
    if (FALSE.equalsIgnoreCase(getLog4jAppenderValue(appenderName, "ImmediateFlush"))) {
        reportWarning("ImmediateFlush=false is not supported on Console appender");
    }
    buildAppenderLayout(appenderName, appenderBuilder);
    builder.add(appenderBuilder);
}
 

private Layout<?> testConsole(final String configResource) throws Exception {
    final Configuration configuration = getConfiguration(configResource);
    final String name = "Console";
    final ConsoleAppender appender = configuration.getAppender(name);
    assertNotNull("Missing appender '" + name + "' in configuration " + configResource + " → " + configuration,
            appender);
    assertEquals(Target.SYSTEM_ERR, appender.getTarget());
    //
    final LoggerConfig loggerConfig = configuration.getLoggerConfig("com.example.foo");
    assertNotNull(loggerConfig);
    assertEquals(Level.DEBUG, loggerConfig.getLevel());
    configuration.start();
    configuration.stop();
    return appender.getLayout();
}
 

@Test
public void testBuilderWithScripts() throws Exception {
    final String script = "if (logEvent.getLoggerName().equals(\"NoLocation\")) {\n" +
            "                return \"NoLocation\";\n" +
            "            } else if (logEvent.getMarker() != null && logEvent.getMarker().isInstanceOf(\"FLOW\")) {\n" +
            "                return \"Flow\";\n" +
            "            } else {\n" +
            "                return null;\n" +
            "            }";
    final ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder();
    builder.setStatusLevel(Level.ERROR);
    builder.setConfigurationName("BuilderTest");
    builder.add(builder.newScriptFile("filter.groovy", "target/test-classes/scripts/filter.groovy").addIsWatched(true));
    final AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE").addAttribute("target",
            ConsoleAppender.Target.SYSTEM_OUT);
    appenderBuilder.add(builder.newLayout("PatternLayout").
            addComponent(builder.newComponent("ScriptPatternSelector")
                    .addAttribute("defaultPattern", "[%-5level] %c{1.} %C{1.}.%M.%L %msg%n")
                    .addComponent(builder.newComponent("PatternMatch").addAttribute("key", "NoLocation")
                            .addAttribute("pattern", "[%-5level] %c{1.} %msg%n"))
                    .addComponent(builder.newComponent("PatternMatch").addAttribute("key", "FLOW")
                            .addAttribute("pattern", "[%-5level] %c{1.} ====== %C{1.}.%M:%L %msg ======%n"))
                    .addComponent(builder.newComponent("selectorScript", "Script", script).addAttribute("language", "beanshell"))));
    appenderBuilder.add(builder.newFilter("ScriptFilter", Filter.Result.DENY,
            Filter.Result.NEUTRAL).addComponent(builder.newComponent("ScriptRef").addAttribute("ref", "filter.groovy")));
    builder.add(appenderBuilder);
    builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG).
            add(builder.newAppenderRef("Stdout")).
            addAttribute("additivity", false));
    builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout")));
    ctx = Configurator.initialize(builder.build());
    final Configuration config = ctx.getConfiguration();
    assertNotNull("No configuration", config);
    assertEquals("Unexpected Configuration", "BuilderTest", config.getName());
    assertThat(config.getAppenders(), hasSize(equalTo(1)));
    assertNotNull("Filter script not found", config.getScriptManager().getScript("filter.groovy"));
    assertNotNull("pattern selector script not found", config.getScriptManager().getScript("selectorScript"));
}
 

private void addTestFixtures(final String name, final ConfigurationBuilder<BuiltConfiguration> builder) {
    builder.setConfigurationName(name);
    builder.setStatusLevel(Level.ERROR);
    builder.setShutdownTimeout(5000, TimeUnit.MILLISECONDS);
    builder.add(builder.newScriptFile("target/test-classes/scripts/filter.groovy").addIsWatched(true));
    builder.add(builder.newFilter("ThresholdFilter", Filter.Result.ACCEPT, Filter.Result.NEUTRAL)
            .addAttribute("level", Level.DEBUG));

    final AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE").addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
    appenderBuilder.add(builder.newLayout("PatternLayout").
            addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
    appenderBuilder.add(builder.newFilter("MarkerFilter", Filter.Result.DENY,
            Filter.Result.NEUTRAL).addAttribute("marker", "FLOW"));
    builder.add(appenderBuilder);

    final AppenderComponentBuilder appenderBuilder2 = builder.newAppender("Kafka", "Kafka").addAttribute("topic", "my-topic");
    appenderBuilder2.addComponent(builder.newProperty("bootstrap.servers", "localhost:9092"));
    appenderBuilder2.add(builder.newLayout("GelfLayout").
        addAttribute("host", "my-host").
        addComponent(builder.newKeyValuePair("extraField", "extraValue")));
    builder.add(appenderBuilder2);

    builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG, true).
                add(builder.newAppenderRef("Stdout")).
                addAttribute("additivity", false));
    builder.add(builder.newLogger("org.apache.logging.log4j.core").
                add(builder.newAppenderRef("Stdout")));
    builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout")));

    builder.addProperty("MyKey", "MyValue");
    builder.add(builder.newCustomLevel("Panic", 17));
    builder.setPackages("foo,bar");
}
 

static Configuration addTestFixtures(final String name, final ConfigurationBuilder<BuiltConfiguration> builder) {
    builder.setConfigurationName(name);
    builder.setStatusLevel(Level.ERROR);
    builder.add(builder.newScriptFile("target/test-classes/scripts/filter.groovy").addIsWatched(true));
    builder.add(builder.newFilter("ThresholdFilter", Filter.Result.ACCEPT, Filter.Result.NEUTRAL)
            .addAttribute("level", Level.DEBUG));

    final AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE").addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
    appenderBuilder.add(builder.newLayout("PatternLayout").
            addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
    appenderBuilder.add(builder.newFilter("MarkerFilter", Filter.Result.DENY,
            Filter.Result.NEUTRAL).addAttribute("marker", "FLOW"));
    builder.add(appenderBuilder);

    final AppenderComponentBuilder appenderBuilder2 = builder.newAppender("Kafka", "Kafka").addAttribute("topic", "my-topic");
    appenderBuilder2.addComponent(builder.newProperty("bootstrap.servers", "localhost:9092"));
    appenderBuilder2.add(builder.newLayout("GelfLayout").
        addAttribute("host", "my-host").
        addComponent(builder.newKeyValuePair("extraField", "extraValue")));
    builder.add(appenderBuilder2);

    builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG, true).
                add(builder.newAppenderRef("Stdout")).
                addAttribute("additivity", false));
    builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout")));

    builder.add(builder.newCustomLevel("Panic", 17));

    return builder.build();
}
 

private ActorLogger() {
	loggerContext = (LoggerContext) LogManager.getContext(LogManager.class.getClassLoader(), false);
	Configuration config = loggerContext.getConfiguration();

	Appender systemConsoleAppender = ConsoleAppender.newBuilder()
		.setName(SYSTEM_CONSOLE_APPENDER_NAME)
		.setLayout(PatternLayout.newBuilder().withPattern(LAYOUT_CONSOLE_SYSTEM).build())
		.setConfiguration(config)
		.build();
	systemConsoleAppender.start();
    AppenderRef[] systemAppenderRefs = new AppenderRef[]{AppenderRef.createAppenderRef(SYSTEM_CONSOLE_APPENDER_NAME, null, null)};
    systemLoggerConfig = LoggerConfig.createLogger(false, Level.DEBUG, SYSTEM_LOGGER_NAME, "true", systemAppenderRefs, null, config, null);
    systemLoggerConfig.addAppender(systemConsoleAppender, null, null);
    
    Appender userConsoleAppender = ConsoleAppender.newBuilder()
		.setName(USER_CONSOLE_APPENDER_NAME)
		.setLayout(PatternLayout.newBuilder().withPattern(LAYOUT_CONSOLE_USER).build())
		.setConfiguration(config)
		.build();
	userConsoleAppender.start();
	AppenderRef[] userAppenderRefs = new AppenderRef[]{AppenderRef.createAppenderRef(USER_CONSOLE_APPENDER_NAME, null, null)};
	userLoggerConfig = LoggerConfig.createLogger(false, Level.DEBUG, USER_LOGGER_NAME, "true", userAppenderRefs, null, config, null);
	userLoggerConfig.addAppender(userConsoleAppender, null, null);

    config.addAppender(systemConsoleAppender);
    config.addAppender(userConsoleAppender);
    config.addLogger(SYSTEM_LOGGER_NAME, systemLoggerConfig);
    config.addLogger(USER_LOGGER_NAME, userLoggerConfig);
	loggerContext.updateLoggers(config);
}
 

@Test
public void compositeLogger() {
    final LoggerContextRule lcr = new LoggerContextRule("classpath:log4j-comp-logger.xml,log4j-comp-logger.json");
    final Statement test = new Statement() {
        @Override
        public void evaluate() throws Throwable {
            final CompositeConfiguration config = (CompositeConfiguration) lcr.getConfiguration();
            Map<String, Appender> appendersMap = config.getLogger("cat1").getAppenders();
            assertEquals("Expected 2 Appender references for cat1 but got " + appendersMap.size(), 2,
                    appendersMap.size());
            assertTrue(appendersMap.get("STDOUT") instanceof ConsoleAppender);

            Filter loggerFilter = config.getLogger("cat1").getFilter();
            assertTrue(loggerFilter instanceof RegexFilter);
            assertEquals(loggerFilter.getOnMatch(), Filter.Result.DENY);

            appendersMap = config.getLogger("cat2").getAppenders();
            assertEquals("Expected 1 Appender reference for cat2 but got " + appendersMap.size(), 1,
                    appendersMap.size());
            assertTrue(appendersMap.get("File") instanceof FileAppender);

            appendersMap = config.getLogger("cat3").getAppenders();
            assertEquals("Expected 1 Appender reference for cat3 but got " + appendersMap.size(), 1,
                    appendersMap.size());
            assertTrue(appendersMap.get("File") instanceof FileAppender);

            appendersMap = config.getRootLogger().getAppenders();
            assertEquals("Expected 2 Appender references for the root logger but got " + appendersMap.size(), 2,
                    appendersMap.size());
            assertTrue(appendersMap.get("File") instanceof FileAppender);
            assertTrue(appendersMap.get("STDOUT") instanceof ConsoleAppender);

            assertEquals("Expected COMPOSITE_SOURCE for composite configuration but got " + config.getConfigurationSource(),
                    config.getConfigurationSource(), ConfigurationSource.COMPOSITE_SOURCE);
        }
    };
    runTest(lcr, test);
}
 

public static LoggerContext initializeLog4j() {
    ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder();
    builder.setStatusLevel(Level.ERROR); // show internal log4j2 errors
    builder.setConfigurationName("QuickAndDirtySetup");
    AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE")
            .addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
    appenderBuilder.add(builder.newLayout("PatternLayout")
            .addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
    builder.add(appenderBuilder);
    //builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG)
    //        .add(builder.newAppenderRef("Stdout")).addAttribute("additivity", false));
    builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout").addAttribute("level", Level.WARN)));
    return Configurator.initialize(builder.build());
}
 

public void start(Logger cfgLogger, String clKey) {
    //为false时，返回多个LoggerContext对象， true：返回唯一的单例LoggerContext
    final LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    final Configuration config = ctx.getConfiguration();
    List<AppenderRef> appenderRefs = new ArrayList<>();
    Map<String, Appender> appenderMap = ((org.apache.logging.log4j.core.Logger) cfgLogger).getAppenders();
    List<Appender> appenders = new ArrayList<>();
    appenderMap.forEach((key, appenderCfg) -> {
        Appender appender;
        if (appenderCfg instanceof ConsoleAppender) {
            appender = appenderCfg;
        } else {
            appender = getAppender(clKey, config, appenderCfg);
        }
        if (appender != null && appender.isStopped()) {
            appender.start();
        }
        if (appender != null) {
            AppenderRef ref = AppenderRef.createAppenderRef(appender.getName(), Level.ALL, null);
            appenderRefs.add(ref);
            appenders.add(appender);
        }
    });
    if (CollectionUtils.isEmpty(appenders)) {
        return;
    }
    AppenderRef[] refs = new AppenderRef[appenderRefs.size()];
    refs = appenderRefs.toArray(refs);
    LoggerConfig loggerConfig = LoggerConfig.createLogger(false, cfgLogger.getLevel(), clKey, "true", refs, null, config, null);
    appenders.stream().forEach(e ->
            loggerConfig.addAppender(e, Level.ALL, null)
    );
    config.addLogger(clKey, loggerConfig);
    ctx.updateLoggers(config);
}
 

protected Logger setupLogger() {
  AnsiConsole.systemInstall();

  final java.util.logging.Logger global = java.util.logging.Logger.getLogger("");
  global.setUseParentHandlers(false);

  final Handler[] handlers = global.getHandlers();
  for (int i = 0; i < handlers.length; ++i) {
    global.removeHandler(handlers[i]);
  }

  global.addHandler(new ForwardLogHandler());
  org.apache.logging.log4j.Logger logger = LogManager.getRootLogger();

  if (logger instanceof org.apache.logging.log4j.core.Logger) {
    final Iterator<org.apache.logging.log4j.core.Appender> appenders =
        ((org.apache.logging.log4j.core.Logger) logger).getAppenders().values().iterator();
    while (appenders.hasNext()) {
      final org.apache.logging.log4j.core.Appender appender = appenders.next();
      if (appender instanceof ConsoleAppender) {
        ((org.apache.logging.log4j.core.Logger) logger).removeAppender(appender);
      }
    }
  }

  new Thread(new TerminalConsoleWriterThread(System.out, reader)).start();
  System.setOut(new PrintStream(new LoggerOutputStream(logger, Level.INFO), true));
  System.setErr(new PrintStream(new LoggerOutputStream(logger, Level.WARN), true));

  BasicConfigurator.resetConfiguration();

  try {
    return (Logger) PGMServer.class.getField("LOGGER").get(PGMServer.class);
  } catch (IllegalAccessException | NoSuchFieldException e) {
    // No-op
  }

  return logger;
}
 

@Test
void testSoutPlainText() {
    Configuration configuration = getLogConfig(Map.of("ship_agent_logs", "false"));

    assertThat(configuration.getAppenders().values()).hasSize(1);
    Appender appender = configuration.getAppenders().values().iterator().next();

    assertThat(appender).isInstanceOf(ConsoleAppender.class);
    assertThat(appender.getLayout()).isInstanceOf(PatternLayout.class);
}