eclipse/eclipse-sightly-core/src/org/apache/sling/ide/eclipse/sightly/internal/Activator.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.sling.ide.eclipse.sightly.internal;

import org.apache.sling.ide.log.Logger;
import org.apache.sling.ide.eclipse.core.ServiceUtil;
import org.eclipse.core.runtime.Plugin;
import org.osgi.framework.BundleContext;
import org.osgi.util.tracker.ServiceTracker;

public class Activator extends Plugin {

    // The plug-in ID
    public static final String PLUGIN_ID = "org.apache.sling.ide.eclipse-sightly-core"; //$NON-NLS-1$

    // The shared instance
    private static Activator plugin;

    private ServiceTracker<Logger, Logger> loggerTracker;


    public void start(BundleContext context) throws Exception {
        
        loggerTracker = new ServiceTracker<>(context, Logger.class, null);
        loggerTracker.open();
        
        super.start(context);
        plugin = this;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
     */
    public void stop(BundleContext context) throws Exception {

        plugin = null;
        
        loggerTracker.close();
        
        super.stop(context);
    }

    /**
     * Returns the shared instance
     *
     * @return the shared instance
     */
    public static Activator getDefault() {
        return plugin;
    }
    
    public Logger getLogger() {
        
        return ServiceUtil.getNotNull(loggerTracker);
    }
}