de.intarsys.tools.monitor.NullMonitor Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of isrt Show documentation
The basic runtime tools and interfaces for intarsys components.
There is a newer version: 4.11
/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.intarsys.tools.monitor;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * A monitor doing nothing...
 */
public class NullMonitor implements IMonitor {

	/** ...but at least it has a name */
	private String name;

	private ITrace nullTrace = new ITrace() {
		/*
		 * (non-Javadoc)
		 * 
		 * @see de.intarsys.tools.monitor.IMonitorTrace#sample(java.lang.String)
		 */
		public ISample sample(Level level, String description) {
			return null;
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see de.intarsys.tools.monitor.IMonitorTrace#start()
		 */
		public void start() {
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see de.intarsys.tools.monitor.IMonitorTrace#stop()
		 */
		public void stop() {
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see de.intarsys.tools.monitor.IMonitorTrace#tag(java.lang.String,
		 * java.lang.Object)
		 */
		public void tag(String key, Object tag) {
		}
	};

	/**
	 * Create a NullMonitor
	 * 
	 * @param name
	 *            monitor name
	 */
	public NullMonitor(String name) {
		super();
		this.name = name;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#start()
	 */
	public ITrace attach() {
		return nullTrace;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#stop()
	 */
	public void detach() {
		// this is a null implementation
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#getActive()
	 */
	public int getActive() {
		return 0;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#getCollectAll()
	 */
	public int getCollectAll() {
		return 0;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getConcurrent()
	 */
	public int getConcurrent() {
		return 0;
	}

	public ITrace getCurrentTrace() {
		return nullTrace;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#getData()
	 */
	public Map getData() {
		return new HashMap();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getDifference()
	 */
	public long getDifference() {
		return 0;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#getFormattedData()
	 */
	public Map getFormattedData() {
		return new HashMap();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getFormattedStart()
	 */
	public String getFormattedStart() {
		return "";
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getFormattedStop()
	 */
	public String getFormattedStop() {
		return "";
	}

	@Override
	public Logger getLogger() {
		return Logger.getAnonymousLogger();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#getName()
	 */
	public String getName() {
		return name;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getSample(java.lang.String)
	 */
	public ISample getSample(String description) {
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getSamples()
	 */
	public List getSamples() {
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getStart()
	 */
	public long getStart() {
		return 0;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getStop()
	 */
	public long getStop() {
		return 0;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#getTags()
	 */
	public Map getTags() {
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#getTraces()
	 */
	public List getTraces() {
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#isActive()
	 */
	public boolean isActive() {
		return false;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#reset()
	 */
	public void reset() {
		// this is a null implementation
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#sample(java.lang.String)
	 */
	public ISample sample(String description) {
		// this is a null implementation
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#setCollectAll(int)
	 */
	public void setCollectAll(int count) {
		// this is a null implementation
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitor#setCollectExtremes(int)
	 */
	public void setCollectExtremes(int count) {
		// this is a null implementation
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.intarsys.tools.monitor.IMonitorTrace#tag(java.lang.String,
	 * java.lang.Object)
	 */
	public void tag(String key, Object tag) {
		// this is a null implementation
	}
}