/*
 * Copyright (c) 2014 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.sal.compatibility.topology

import org.opendaylight.controller.sal.binding.api.data.DataProviderService
import org.opendaylight.controller.sal.topology.IPluginOutTopologyService
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey
import org.opendaylight.yangtools.yang.binding.DataObject
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link
import org.slf4j.LoggerFactory
import org.opendaylight.yangtools.concepts.ListenerRegistration
import org.opendaylight.controller.sal.binding.api.data.DataChangeListener

class TopologyProvider implements AutoCloseable{
    static val LOG = LoggerFactory.getLogger(TopologyProvider);
    TopologyCommitHandler commitHandler
    
    @Property
    IPluginOutTopologyService topologyPublisher;
    
    @Property
    DataProviderService dataService;
    
    ListenerRegistration<DataChangeListener> listenerRegistration
    
    
    def void start() {

    }
    def void startAdapter() {
        if(dataService == null){
            LOG.error("dataService not set");
            return;
        }
        commitHandler = new TopologyCommitHandler(dataService,topologyPublisher);
        val InstanceIdentifier<? extends DataObject> path = InstanceIdentifier.builder(NetworkTopology)
            .child(Topology,new TopologyKey(new TopologyId("flow:1")))
            .child(Link)
            .toInstance();
        listenerRegistration = dataService.registerDataChangeListener(path,commitHandler);
        LOG.info("TopologyProvider started")
    }
    
    override close() throws Exception {
        listenerRegistration.close
    }
    
    def setTopologyPublisher(IPluginOutTopologyService topologyPublisher) {
        _topologyPublisher = topologyPublisher;
        if(commitHandler != null){
            commitHandler.setTopologyPublisher(topologyPublisher);
        }
    }
    
}