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JMole Core
There is a newer version: 1.5.4
package net.welen.jmole.protocols.logger;

import java.util.HashMap;

/*
 * #%L
 * JMole, https://bitbucket.org/awelen/jmole
 * %%
 * Copyright (C) 2015 - 2017 Anders Welén, [email protected]
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.logging.Level;

import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.ReflectionException;

import net.welen.jmole.JMole;
import net.welen.jmole.presentation.PresentationInformation;
import net.welen.jmole.protocols.Utils;

public class Logger implements LoggerMBean, Runnable {

	private final static java.util.logging.Logger LOG = java.util.logging.Logger.getLogger(Logger.class.getName());

	private static final char SEP = '/';

	private static String PROPERTY_LOGGER_ENABLED = "jmole.protocol.logger.enabled";
	private static String PROPERTY_LOGGER_NAME = "jmole.protocol.logger.name";
	private static String PROPERTY_LOGGER_FORMAT = "jmole.protocol.logger.format";
	private static String PROPERTY_LOGGER_LEVEL = "jmole.protocol.logger.level";
	private static String PROPERTY_LOGGER_INTERVAL = "jmole.protocol.logger.interval";

	private Level level;
	private String format;
	private Long interval;
	private java.util.logging.Logger protocolLogger = java.util.logging.Logger.getLogger("JMole");

	private boolean stopped = false;
	private boolean loggerStopped = false;
	private Thread collector;
	private JMole jmole;

	@Override
	public boolean isEnabled() {
		return Boolean.getBoolean(PROPERTY_LOGGER_ENABLED);
	}

	@Override
	public void startProtocol(JMole jmole) throws Exception {
		this.jmole = jmole;

		String levelString = System.getProperty(PROPERTY_LOGGER_LEVEL);
		if (levelString == null) {
			levelString = "INFO";
		}
		level = Level.parse(levelString);

		String name = System.getProperty(PROPERTY_LOGGER_NAME);
		if (name != null) {
			protocolLogger = java.util.logging.Logger.getLogger(name);
		}

		format = System.getProperty(PROPERTY_LOGGER_FORMAT);
		if (format == null) {
			format = "[%k] %a [%A] = %v %U";
		}
		
		interval = Long.getLong(PROPERTY_LOGGER_INTERVAL);
		if (interval == null) {
			interval = 60000L;
		}

		collector = new Thread(this);
		collector.setName("JMole Logger protocol thread");
		collector.start();
		LOG.log(Level.INFO, "JMole Logger protocol started: Level=" + levelString + ", Interval=" + interval);
	}

	@Override
	public void stopProtocol() throws Exception {
		LOG.log(Level.INFO, "Stopping JMole Logger protocol");
		stopped = true;
		collector.interrupt();
		while (!loggerStopped) {
			try {
				Thread.sleep(500);
			} catch (InterruptedException e) {
				LOG.log(Level.FINE, e.getMessage(), e);
			}
		}
		LOG.log(Level.INFO, "JMole Logger protocol stopped");
	}

	@Override
	public String getLevel() {
		return level.getName();
	}

	@Override
	public void setLevel(String level) {
		this.level = Level.parse(level);
	}

	@Override
	public long getInterval() {
		return interval;
	}

	@Override
	public void setInterval(long interval) {
		this.interval = interval;
	}

	@Override
	public String getFormat() {
		return format;
	}

	@Override
	public void setFormat(String format) {
		this.format = format;
	}

	@Override
	public void run() {
		stopped = false;
		loggerStopped = false;
		try {
			while (!stopped) {
				try {
					Thread.sleep(interval);
				} catch (InterruptedException e) {
					LOG.log(Level.FINE, e.getMessage(), e);
				}

				if (stopped) {
					return;
				}
				
				try {
					logMeasurements();
					logWarnings();
					logCriticals();
				} catch (Exception e) {
					LOG.log(Level.SEVERE, e.getMessage(), e);
				}

			}
		} finally {
			loggerStopped = true;
		}
	}

	private void logMeasurements()
			throws InstanceNotFoundException, AttributeNotFoundException, ReflectionException, MBeanException {
		Map presentationInformationMap = new HashMap();
		for (Entry>>> categoryEntry : jmole
				.collectMeasurements(presentationInformationMap).entrySet()) {
			Iterator>> iter = categoryEntry.getValue().iterator();
			while (iter.hasNext()) {
				for (Entry> nameEntry : iter.next().entrySet()) {
					for (Entry attributeEntry : nameEntry.getValue().entrySet()) {

						String piKey = categoryEntry.getKey() + nameEntry.getKey();
						PresentationInformation presentationInformation = presentationInformationMap.get(piKey);
						if (presentationInformation == null) {
							LOG.severe("No presentation information found for: " + piKey + ", Skipping it");
							continue;
						}
						try {
							if (attributeEntry.getValue() != null) {
								protocolLogger.log(level, Utils.formatLogString(format, SEP, categoryEntry, nameEntry, attributeEntry,
										presentationInformation));
							}
						} catch (NumberFormatException e) {
							LOG.log(Level.SEVERE, e.getMessage() + ": " + categoryEntry.getKey() + SEP
									+ nameEntry.getKey() + SEP + attributeEntry.getKey(), e);
						}
					}
				}
			}
		}
	}

	private void logWarnings()
			throws AttributeNotFoundException, InstanceNotFoundException, MBeanException, ReflectionException {
		for (Entry> categoryEntry : jmole.warningMessages().entrySet()) {
			for (Entry entry : categoryEntry.getValue().entrySet()) {
				protocolLogger.log(Level.WARNING, "[" + categoryEntry.getKey() + SEP + entry.getKey() + "] " + entry.getValue());
			}
		}
	}

	private void logCriticals()
			throws AttributeNotFoundException, InstanceNotFoundException, MBeanException, ReflectionException {
		for (Entry> categoryEntry : jmole.criticalMessages().entrySet()) {
			for (Entry entry : categoryEntry.getValue().entrySet()) {
				protocolLogger.log(Level.SEVERE, "[" + categoryEntry.getKey() + SEP + entry.getKey() + "] " + entry.getValue());		
			}
		}
	}

}