/*
 * 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.openflowplugin.openflow.md;

import org.apache.felix.dm.Component;
import org.opendaylight.controller.sal.binding.api.BindingAwareBroker;
import org.opendaylight.controller.sal.core.ComponentActivatorAbstractBase;
import org.opendaylight.openflowjava.protocol.spi.connection.SwitchConnectionProvider;
import org.opendaylight.openflowplugin.openflow.md.core.MDController;
import org.opendaylight.openflowplugin.openflow.md.core.sal.OpenflowPluginProvider;
import org.osgi.framework.BundleContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Openflow protocol plugin Activator
 */
public class Activator extends ComponentActivatorAbstractBase {
    protected static final Logger logger = LoggerFactory.getLogger(Activator.class);

    private OpenflowPluginProvider pluginProvider = new OpenflowPluginProvider();

    /**
     * Function called when the activator starts just after some initializations
     * are done by the ComponentActivatorAbstractBase.
     *
     */
    public void init() {
    }

    /**
     * Function called when the activator stops just before the cleanup done by
     * ComponentActivatorAbstractBase
     *
     */
    public void destroy() {
    }

    @Override
    public void start(BundleContext arg0) {
        super.start(arg0);
        pluginProvider.setContext(arg0);
    }

    /**
     * Function that is used to communicate to dependency manager the list of
     * known implementations for services inside a container
     *
     *
     * @return An array containing all the CLASS objects that will be
     *         instantiated in order to get an fully working implementation
     *         Object
     */
    public Object[] getImplementations() {
        Object[] res = {};
        return res;
    }

    /**
     * Function that is called when configuration of the dependencies is
     * required.
     *
     * @param c
     *            dependency manager Component object, used for configuring the
     *            dependencies exported and imported
     * @param imp
     *            Implementation class that is being configured, needed as long
     *            as the same routine can configure multiple implementations
     * @param containerName
     *            The containerName being configured, this allow also optional
     *            per-container different behavior if needed, usually should not
     *            be the case though.
     */
    public void configureInstance(Component c, Object imp, String containerName) {

    }

    /**
     * Function that is used to communicate to dependency manager the list of
     * known implementations for services that are container independent.
     *
     *
     * @return An array containing all the CLASS objects that will be
     *         instantiated in order to get an fully working implementation
     *         Object
     */
    public Object[] getGlobalImplementations() {
        Object[] res = { MDController.class, pluginProvider };
        return res;
    }

    /**
     * Function that is called when configuration of the dependencies is
     * required.
     *
     * @param c
     *            dependency manager Component object, used for configuring the
     *            dependencies exported and imported
     * @param imp
     *            Implementation class that is being configured, needed as long
     *            as the same routine can configure multiple implementations
     */
    public void configureGlobalInstance(Component c, Object imp) {

         if (imp == pluginProvider) {
            // c.setInterface(new String[] { IDiscoveryListener.class.getName(),
            // IContainerListener.class.getName(),
            // IRefreshInternalProvider.class.getName(),
            // IInventoryShimExternalListener.class.getName() }, null);
            c.add(createServiceDependency().setService(BindingAwareBroker.class)
                    .setCallbacks("setBroker", "unsetBroker").setRequired(true));
            c.add(createServiceDependency().setService(SwitchConnectionProvider.class)
                    .setCallbacks("setSwitchConnectionProvider", "unsetSwitchConnectionProvider").setRequired(true));
            logger.debug("configuring Binding Aware Provider");
        }
    }

}