/*
 * Copyright 2007 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package org.wamblee.system.core;

import javax.sql.DataSource;

import org.wamblee.system.core.AbstractComponent;
import org.wamblee.system.core.DefaultProvidedInterface;
import org.wamblee.system.core.ProvidedInterface;
import org.wamblee.system.core.RequiredInterface;
import org.wamblee.test.EventTracker;


public class Environment extends AbstractComponent {
	
	private static final ProvidedInterface[] provided() { 
		return new ProvidedInterface[] { 
    			new DefaultProvidedInterface("datasource", DataSource.class), 
    			new DefaultProvidedInterface("integer", Integer.class)
    	};
	}
	
	private EventTracker<String> _tracker; 
	
	public Environment() { 
		super("environment", provided(), new RequiredInterface[0]);
	}
	
	public Environment(EventTracker aTracker) { 
		this();
		_tracker = aTracker; 
	}
	
	@Override
	protected void doStart() {
	    addService(getProvidedServices()[0], new Integer(1));
	    addService(getProvidedServices()[1], new Integer(2));
	    track("start." + getName());
	}

	@Override
	protected void doStop() {
		track("stop." + getName());
	}
	
	private void track(String aString) {
		if ( _tracker == null ) { 
			return; 
		}
		_tracker.eventOccurred(aString);
	}
}