Example usage for java.util.logging Logger getHandlers

Introduction

In this page you can find the example usage for java.util.logging Logger getHandlers.

Prototype

public Handler[] getHandlers() 

Source Link

Document

Get the Handlers associated with this logger.

Usage

From source file:MailHandlerDemo.java

/**
 * Used debug problems with the logging.properties. The system property
 * java.security.debug=access,stack can be used to trace access to the
 * LogManager reset./*  w  w  w  . jav a 2s  .  c  om*/
 *
 * @param prefix a string to prefix the output.
 * @param err any PrintStream or null for System.out.
 */
@SuppressWarnings("UseOfSystemOutOrSystemErr")
private static void checkConfig(String prefix, PrintStream err) {
    if (prefix == null || prefix.trim().length() == 0) {
        prefix = "DEBUG";
    }

    if (err == null) {
        err = System.out;
    }

    try {
        err.println(prefix + ": java.version=" + System.getProperty("java.version"));
        err.println(prefix + ": LOGGER=" + LOGGER.getLevel());
        err.println(prefix + ": JVM id " + ManagementFactory.getRuntimeMXBean().getName());
        err.println(prefix + ": java.security.debug=" + System.getProperty("java.security.debug"));
        SecurityManager sm = System.getSecurityManager();
        if (sm != null) {
            err.println(prefix + ": SecurityManager.class=" + sm.getClass().getName());
            err.println(prefix + ": SecurityManager classLoader=" + toString(sm.getClass().getClassLoader()));
            err.println(prefix + ": SecurityManager.toString=" + sm);
        } else {
            err.println(prefix + ": SecurityManager.class=null");
            err.println(prefix + ": SecurityManager.toString=null");
            err.println(prefix + ": SecurityManager classLoader=null");
        }

        String policy = System.getProperty("java.security.policy");
        if (policy != null) {
            File f = new File(policy);
            err.println(prefix + ": AbsolutePath=" + f.getAbsolutePath());
            err.println(prefix + ": CanonicalPath=" + f.getCanonicalPath());
            err.println(prefix + ": length=" + f.length());
            err.println(prefix + ": canRead=" + f.canRead());
            err.println(prefix + ": lastModified=" + new java.util.Date(f.lastModified()));
        }

        LogManager manager = LogManager.getLogManager();
        String key = "java.util.logging.config.file";
        String cfg = System.getProperty(key);
        if (cfg != null) {
            err.println(prefix + ": " + cfg);
            File f = new File(cfg);
            err.println(prefix + ": AbsolutePath=" + f.getAbsolutePath());
            err.println(prefix + ": CanonicalPath=" + f.getCanonicalPath());
            err.println(prefix + ": length=" + f.length());
            err.println(prefix + ": canRead=" + f.canRead());
            err.println(prefix + ": lastModified=" + new java.util.Date(f.lastModified()));
        } else {
            err.println(prefix + ": " + key + " is not set as a system property.");
        }
        err.println(prefix + ": LogManager.class=" + manager.getClass().getName());
        err.println(prefix + ": LogManager classLoader=" + toString(manager.getClass().getClassLoader()));
        err.println(prefix + ": LogManager.toString=" + manager);
        err.println(prefix + ": MailHandler classLoader=" + toString(MailHandler.class.getClassLoader()));
        err.println(
                prefix + ": Context ClassLoader=" + toString(Thread.currentThread().getContextClassLoader()));
        err.println(prefix + ": Session ClassLoader=" + toString(Session.class.getClassLoader()));
        err.println(prefix + ": DataHandler ClassLoader=" + toString(DataHandler.class.getClassLoader()));

        final String p = MailHandler.class.getName();
        key = p.concat(".mail.to");
        String to = manager.getProperty(key);
        err.println(prefix + ": TO=" + to);
        if (to != null) {
            err.println(prefix + ": TO=" + Arrays.toString(InternetAddress.parse(to, true)));
        }

        key = p.concat(".mail.from");
        String from = manager.getProperty(key);
        if (from == null || from.length() == 0) {
            Session session = Session.getInstance(new Properties());
            InternetAddress local = InternetAddress.getLocalAddress(session);
            err.println(prefix + ": FROM=" + local);
        } else {
            err.println(prefix + ": FROM=" + Arrays.asList(InternetAddress.parse(from, false)));
            err.println(prefix + ": FROM=" + Arrays.asList(InternetAddress.parse(from, true)));
        }

        synchronized (manager) {
            final Enumeration<String> e = manager.getLoggerNames();
            while (e.hasMoreElements()) {
                final Logger l = manager.getLogger(e.nextElement());
                if (l != null) {
                    final Handler[] handlers = l.getHandlers();
                    if (handlers.length > 0) {
                        err.println(prefix + ": " + l.getClass().getName() + ", " + l.getName());
                        for (Handler h : handlers) {
                            err.println(prefix + ":\t" + toString(prefix, err, h));
                        }
                    }
                }
            }
        }
    } catch (Throwable error) {
        err.print(prefix + ": ");
        error.printStackTrace(err);
    }
    err.flush();
}

---

From source file:net.technicpack.launcher.LauncherMain.java

private static void setupLogging(LauncherDirectories directories, ResourceLoader resources) {
    System.out.println("Setting up logging");
    final Logger logger = Utils.getLogger();
    File logDirectory = new File(directories.getLauncherDirectory(), "logs");
    if (!logDirectory.exists()) {
        logDirectory.mkdir();/*  w  w  w.  java2s.com*/
    }
    File logs = new File(logDirectory, "techniclauncher_%D.log");
    RotatingFileHandler fileHandler = new RotatingFileHandler(logs.getPath());

    fileHandler.setFormatter(new BuildLogFormatter(resources.getLauncherBuild()));

    for (Handler h : logger.getHandlers()) {
        logger.removeHandler(h);
    }
    logger.addHandler(fileHandler);
    logger.setUseParentHandlers(false);

    LauncherMain.consoleFrame = new ConsoleFrame(2500, resources.getImage("icon.png"));
    Console console = new Console(LauncherMain.consoleFrame, resources.getLauncherBuild());

    logger.addHandler(new ConsoleHandler(console));

    System.setOut(new PrintStream(new LoggerOutputStream(console, Level.INFO, logger), true));
    System.setErr(new PrintStream(new LoggerOutputStream(console, Level.SEVERE, logger), true));

    Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
        @Override
        public void uncaughtException(Thread t, Throwable e) {
            e.printStackTrace();
            logger.log(Level.SEVERE, "Unhandled Exception in " + t, e);

            //                if (errorDialog == null) {
            //                    LauncherFrame frame = null;
            //
            //                    try {
            //                        frame = Launcher.getFrame();
            //                    } catch (Exception ex) {
            //                        //This can happen if we have a very early crash- before Launcher initializes
            //                    }
            //
            //                    errorDialog = new ErrorDialog(frame, e);
            //                    errorDialog.setVisible(true);
            //                }
        }
    });
}

---

From source file:org.spoutcraft.launcher.Main.java

private static void setupLogger() {
    Logger logger = Logger.getLogger("launcher");
    File logDirectory = new File(Utils.getWorkingDirectory(), "logs");
    if (!logDirectory.exists()) {
        logDirectory.mkdir();//from   w  ww.  jav  a 2s. com
    }
    File logs = new File(logDirectory, "spoutcraft_%D.log");
    RotatingFileHandler fileHandler = new RotatingFileHandler(logs.getPath());

    fileHandler.setFormatter(new DateOutputFormatter(new SimpleDateFormat("yyyy/MM/dd HH:mm:ss")));

    for (Handler h : logger.getHandlers()) {
        logger.removeHandler(h);
    }
    logger.addHandler(fileHandler);

    Main.handler = fileHandler;

    logger.setUseParentHandlers(false);

    System.setOut(new PrintStream(new LoggerOutputStream(Level.INFO, logger), true));
    System.setErr(new PrintStream(new LoggerOutputStream(Level.SEVERE, logger), true));
    Main.logger = logger;
}

---

From source file:net.sourceforge.pmd.junit.JavaUtilLoggingRule.java

/**
 * Creates a new rule, that attaches a custom log handler
 * to the given logger.//from w  w w.  j  a va  2 s .  com
 * @param loggerName the name of the logger to check
 */
public JavaUtilLoggingRule(String loggerName) {
    this.logger = Logger.getLogger(loggerName);
    this.stream = new ByteArrayOutputStream();

    Logger currentLogger = logger;
    while (currentLogger.getHandlers().length == 0) {
        currentLogger = currentLogger.getParent();
    }
    this.customLogHandler = new StreamHandler(stream, currentLogger.getHandlers()[0].getFormatter());
}

---

From source file:com.ning.jetty.core.listeners.SetupJULBridge.java

@Override
public void contextInitialized(final ServletContextEvent event) {
    // We first remove the default handler(s)
    final Logger rootLogger = LogManager.getLogManager().getLogger("");
    final Handler[] handlers = rootLogger.getHandlers();

    if (!ArrayUtils.isEmpty(handlers)) {
        for (final Handler handler : handlers) {
            rootLogger.removeHandler(handler);
        }//from   w w w . j a v  a  2 s  .  c o  m
    }
    // And then we let jul-to-sfl4j do its magic so that jersey messages go to sfl4j
    SLF4JBridgeHandler.install();
}

---

From source file:com.ning.metrics.action.binder.filters.SetupJULBridge.java

@Override
public void contextInitialized(final ServletContextEvent event) {
    // we first remove the default handler(s)
    final Logger rootLogger = LogManager.getLogManager().getLogger("");
    final Handler[] handlers = rootLogger.getHandlers();

    if (!ArrayUtils.isEmpty(handlers)) {
        for (Handler handler : handlers) {
            rootLogger.removeHandler(handler);
        }//from   w w  w  .  j a  va  2 s .  co  m
    }
    // and then we let jul-to-sfl4j do its magic so that jersey messages go to sfl4j (and thus log4j)
    SLF4JBridgeHandler.install();

    log.info("Assimilated java.util Logging");
}

---

From source file:com.ning.metrics.collector.endpoint.setup.SetupJULBridge.java

@Override
public void contextInitialized(final ServletContextEvent event) {
    // we first remove the default handler(s)
    final Logger rootLogger = LogManager.getLogManager().getLogger("");
    final Handler[] handlers = rootLogger.getHandlers();

    if (!ArrayUtils.isEmpty(handlers)) {
        for (final Handler handler : handlers) {
            rootLogger.removeHandler(handler);
        }/*from  www.  j  a v  a2  s  .  c om*/
    }
    // and then we let jul-to-sfl4j do its magic so that jersey messages go to sfl4j (and thus log4j)
    SLF4JBridgeHandler.install();

    log.info("Assimilated java.util Logging");
}

---

From source file:com.twitter.common.net.http.handlers.LogConfig.java

private void maybeAdjustHandlerLevels(Logger logger, Level newLevel) {
    do {//from  w w w.j a  v a 2 s .  co m
        for (Handler handler : logger.getHandlers()) {
            Level handlerLevel = handler.getLevel();
            if (newLevel.intValue() < handlerLevel.intValue()) {
                handler.setLevel(newLevel);
            }
        }
    } while (logger.getUseParentHandlers() && (logger = logger.getParent()) != null);
}

---

From source file:de.ailis.microblinks.blinks.compiler.Main.java

/**
 * Setups logging./*from  w ww .j  a v  a  2  s.c o m*/
 */
private void setupLogging() {
    final Logger logger = Logger.getLogger("");
    for (final Handler handler : logger.getHandlers()) {
        logger.removeHandler(handler);
    }
    logger.addHandler(new LogHandler(progName));
}

---

From source file:pe.chalk.telegram.TelegramBot.java

public Logger initLogger(final Level level) {
    final Logger logger = this.getLogger();
    for (Handler handler : logger.getHandlers())
        logger.removeHandler(handler);//from  w w  w.j a va 2  s  .c om

    logger.setUseParentHandlers(false);
    logger.addHandler(new StandardHandler(level));
    logger.setLevel(level);

    return logger;
}

---

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