Java Configuration.start方法代碼示例

import org.apache.logging.log4j.core.config.Configuration; //導入方法依賴的package包/類
/**
 * Set the Configuration to be used.
 * @param config The new Configuration.
 * @return The previous Configuration.
 */
private synchronized Configuration setConfiguration(final Configuration config) {
    if (config == null) {
        throw new NullPointerException("No Configuration was provided");
    }
    final Configuration prev = this.config;
    config.addListener(this);
    final Map<String, String> map = new HashMap<String, String>();
    map.put("hostName", NetUtils.getLocalHostname());
    map.put("contextName", name);
    config.addComponent(Configuration.CONTEXT_PROPERTIES, map);
    config.start();
    this.config = config;
    updateLoggers();
    if (prev != null) {
        prev.removeListener(this);
        prev.stop();
    }

    // notify listeners
    final PropertyChangeEvent evt = new PropertyChangeEvent(this, PROPERTY_CONFIG, prev, config);
    for (final PropertyChangeListener listener : propertyChangeListeners) {
        listener.propertyChange(evt);
    }
    return prev;
}
 

import org.apache.logging.log4j.core.config.Configuration; //導入方法依賴的package包/類
private void testRollingFileAppender(final String configResource, final String name, final String filePattern) throws URISyntaxException {
	final Configuration configuration = getConfiguration(configResource);
	final Appender appender = configuration.getAppender(name);
	assertNotNull(appender);
	assertEquals(name, appender.getName());
	assertTrue(appender.getClass().getName(), appender instanceof RollingFileAppender);
	final RollingFileAppender rfa = (RollingFileAppender) appender;
	assertEquals("target/hadoop.log", rfa.getFileName());
	assertEquals(filePattern, rfa.getFilePattern());
	final TriggeringPolicy triggeringPolicy = rfa.getTriggeringPolicy();
	assertNotNull(triggeringPolicy);
	assertTrue(triggeringPolicy.getClass().getName(), triggeringPolicy instanceof CompositeTriggeringPolicy);
	final CompositeTriggeringPolicy ctp = (CompositeTriggeringPolicy) triggeringPolicy;
	final TriggeringPolicy[] triggeringPolicies = ctp.getTriggeringPolicies();
	assertEquals(1, triggeringPolicies.length);
	final TriggeringPolicy tp = triggeringPolicies[0];
	assertTrue(tp.getClass().getName(), tp instanceof SizeBasedTriggeringPolicy);
	final SizeBasedTriggeringPolicy sbtp = (SizeBasedTriggeringPolicy) tp;
	assertEquals(256 * 1024 * 1024, sbtp.getMaxFileSize());
	final RolloverStrategy rolloverStrategy = rfa.getManager().getRolloverStrategy();
	assertTrue(rolloverStrategy.getClass().getName(), rolloverStrategy instanceof DefaultRolloverStrategy);
	final DefaultRolloverStrategy drs = (DefaultRolloverStrategy) rolloverStrategy;
	assertEquals(20, drs.getMaxIndex());
	configuration.start();
	configuration.stop();
}
 

import org.apache.logging.log4j.core.config.Configuration; //導入方法依賴的package包/類
private void testDailyRollingFileAppender(final String configResource, final String name, final String filePattern) throws URISyntaxException {
	final Configuration configuration = getConfiguration(configResource);
	final Appender appender = configuration.getAppender(name);
	assertNotNull(appender);
	assertEquals(name, appender.getName());
	assertTrue(appender.getClass().getName(), appender instanceof RollingFileAppender);
	final RollingFileAppender rfa = (RollingFileAppender) appender;
	assertEquals("target/hadoop.log", rfa.getFileName());
	assertEquals(filePattern, rfa.getFilePattern());
	final TriggeringPolicy triggeringPolicy = rfa.getTriggeringPolicy();
	assertNotNull(triggeringPolicy);
	assertTrue(triggeringPolicy.getClass().getName(), triggeringPolicy instanceof CompositeTriggeringPolicy);
	final CompositeTriggeringPolicy ctp = (CompositeTriggeringPolicy) triggeringPolicy;
	final TriggeringPolicy[] triggeringPolicies = ctp.getTriggeringPolicies();
	assertEquals(1, triggeringPolicies.length);
	final TriggeringPolicy tp = triggeringPolicies[0];
	assertTrue(tp.getClass().getName(), tp instanceof TimeBasedTriggeringPolicy);
	final TimeBasedTriggeringPolicy tbtp = (TimeBasedTriggeringPolicy) tp;
	assertEquals(1, tbtp.getInterval());
	final RolloverStrategy rolloverStrategy = rfa.getManager().getRolloverStrategy();
	assertTrue(rolloverStrategy.getClass().getName(), rolloverStrategy instanceof DefaultRolloverStrategy);
	final DefaultRolloverStrategy drs = (DefaultRolloverStrategy) rolloverStrategy;
	assertEquals(Integer.MAX_VALUE, drs.getMaxIndex());
	configuration.start();
	configuration.stop();
}
 

import org.apache.logging.log4j.core.config.Configuration; //導入方法依賴的package包/類
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();
}
 

import org.apache.logging.log4j.core.config.Configuration; //導入方法依賴的package包/類
private Layout<?> testFile(final String configResource) throws Exception {
	final Configuration configuration = getConfiguration(configResource);
	final FileAppender appender = configuration.getAppender("File");
	assertNotNull(appender);
	assertEquals("target/mylog.txt", appender.getFileName());
	//
	final LoggerConfig loggerConfig = configuration.getLoggerConfig("com.example.foo");
	assertNotNull(loggerConfig);
	assertEquals(Level.DEBUG, loggerConfig.getLevel());
	configuration.start();
	configuration.stop();
	return appender.getLayout();
}
 

import org.apache.logging.log4j.core.config.Configuration; //導入方法依賴的package包/類
/**
 * Sets the Configuration to be used.
 *
 * @param config The new Configuration.
 * @return The previous Configuration.
 */
private Configuration setConfiguration(final Configuration config) {
    if (config == null) {
        LOGGER.error("No configuration found for context '{}'.", contextName);
        // No change, return the current configuration.
        return this.configuration;
    }
    configLock.lock();
    try {
        final Configuration prev = this.configuration;
        config.addListener(this);

        final ConcurrentMap<String, String> map = config.getComponent(Configuration.CONTEXT_PROPERTIES);

        try { // LOG4J2-719 network access may throw android.os.NetworkOnMainThreadException
            map.putIfAbsent("hostName", NetUtils.getLocalHostname());
        } catch (final Exception ex) {
            LOGGER.debug("Ignoring {}, setting hostName to 'unknown'", ex.toString());
            map.putIfAbsent("hostName", "unknown");
        }
        map.putIfAbsent("contextName", contextName);
        config.start();
        this.configuration = config;
        updateLoggers();
        if (prev != null) {
            prev.removeListener(this);
            prev.stop();
        }

        firePropertyChangeEvent(new PropertyChangeEvent(this, PROPERTY_CONFIG, prev, config));

        try {
            Server.reregisterMBeansAfterReconfigure();
        } catch (final LinkageError | Exception e) {
            // LOG4J2-716: Android has no java.lang.management
            LOGGER.error("Could not reconfigure JMX", e);
        }
        // AsyncLoggers update their nanoClock when the configuration changes
        Log4jLogEvent.setNanoClock(configuration.getNanoClock());

        return prev;
    } finally {
        configLock.unlock();
    }
}