/*
 * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.controller.netconf.impl.osgi;

import org.opendaylight.controller.netconf.api.util.NetconfConstants;
import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceFactory;
import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceFactoryListener;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.util.tracker.ServiceTracker;

class NetconfOperationServiceFactoryTracker extends
        ServiceTracker<NetconfOperationServiceFactory, NetconfOperationServiceFactory> {
    private final NetconfOperationServiceFactoryListener factoriesListener;

    NetconfOperationServiceFactoryTracker(BundleContext context,
            final NetconfOperationServiceFactoryListener factoriesListener) {
        super(context, NetconfOperationServiceFactory.class, null);
        this.factoriesListener = factoriesListener;
    }

    @Override
    public NetconfOperationServiceFactory addingService(ServiceReference<NetconfOperationServiceFactory> reference) {
        Object property = reference.getProperty(NetconfConstants.SERVICE_NAME);
        if (property != null
                && (property.equals(NetconfConstants.CONFIG_NETCONF_CONNECTOR)
                || property.equals(NetconfConstants.NETCONF_MONITORING))) {
            NetconfOperationServiceFactory netconfOperationServiceFactory = super.addingService(reference);
            factoriesListener.onAddNetconfOperationServiceFactory(netconfOperationServiceFactory);
            return netconfOperationServiceFactory;
        }

        return null;
    }

    @Override
    public void removedService(ServiceReference<NetconfOperationServiceFactory> reference,
            NetconfOperationServiceFactory netconfOperationServiceFactory) {
        if (netconfOperationServiceFactory != null) {
            factoriesListener.onRemoveNetconfOperationServiceFactory(netconfOperationServiceFactory);
        }
    }

}