///*
// * Copyright (c) 2015 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.messagebus.eventsources.netconf;
//
//import java.util.HashMap;
//import java.util.List;
//import java.util.Map;
//import java.util.concurrent.ConcurrentHashMap;
//
//import org.opendaylight.controller.config.yang.messagebus.app.impl.NamespaceToStream;
//import org.opendaylight.controller.md.sal.binding.api.DataBroker;
//import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
//import org.opendaylight.controller.md.sal.binding.api.MountPointService;
//import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
//import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
//import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
//import org.opendaylight.controller.md.sal.dom.api.DOMMountPointService;
//import org.opendaylight.controller.md.sal.dom.api.DOMNotificationPublishService;
//import org.opendaylight.controller.messagebus.spi.EventSourceRegistry;
//import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
//import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.network.topology.topology.topology.types.TopologyNetconf;
//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.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
//import org.opendaylight.yangtools.concepts.ListenerRegistration;
//import org.opendaylight.yangtools.yang.binding.DataObject;
//import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;
//
//import com.google.common.base.Preconditions;
//
//public final class NetconfEventSourceManager implements DataChangeListener, AutoCloseable {
//
//    private static final Logger LOG = LoggerFactory.getLogger(NetconfEventSourceManager.class);
//    private static final TopologyKey NETCONF_TOPOLOGY_KEY = new TopologyKey(new TopologyId(TopologyNetconf.QNAME.getLocalName()));
//    private static final InstanceIdentifier<Node> NETCONF_DEVICE_PATH = InstanceIdentifier.create(NetworkTopology.class)
//                .child(Topology.class, NETCONF_TOPOLOGY_KEY)
//                .child(Node.class);
//
//    private final Map<String, String> streamMap;
//    private final ConcurrentHashMap<InstanceIdentifier<?>, NetconfEventSourceRegistration> registrationMap = new ConcurrentHashMap<>();
//    private final DOMNotificationPublishService publishService;
//    private final DOMMountPointService domMounts;
//    private final MountPointService mountPointService;
//    private ListenerRegistration<DataChangeListener> listenerRegistration;
//    private final EventSourceRegistry eventSourceRegistry;
//
//    public static NetconfEventSourceManager create(final DataBroker dataBroker,
//            final DOMNotificationPublishService domPublish,
//            final DOMMountPointService domMount,
//            final MountPointService bindingMount,
//            final EventSourceRegistry eventSourceRegistry,
//            final List<NamespaceToStream> namespaceMapping){
//
//        final NetconfEventSourceManager eventSourceManager =
//                new NetconfEventSourceManager(domPublish, domMount,bindingMount, eventSourceRegistry, namespaceMapping);
//
//        eventSourceManager.initialize(dataBroker);
//
//        return eventSourceManager;
//
//    }
//
//    private NetconfEventSourceManager(final DOMNotificationPublishService domPublish,
//                              final DOMMountPointService domMount,
//                              final MountPointService bindingMount,
//                              final EventSourceRegistry eventSourceRegistry,
//                              final List<NamespaceToStream> namespaceMapping) {
//
//        Preconditions.checkNotNull(domPublish);
//        Preconditions.checkNotNull(domMount);
//        Preconditions.checkNotNull(bindingMount);
//        Preconditions.checkNotNull(eventSourceRegistry);
//        Preconditions.checkNotNull(namespaceMapping);
//        this.streamMap = namespaceToStreamMapping(namespaceMapping);
//        this.domMounts = domMount;
//        this.mountPointService = bindingMount;
//        this.publishService = domPublish;
//        this.eventSourceRegistry = eventSourceRegistry;
//    }
//
//    private void initialize(final DataBroker dataBroker){
//        Preconditions.checkNotNull(dataBroker);
//        listenerRegistration = dataBroker.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL, NETCONF_DEVICE_PATH, this, DataChangeScope.SUBTREE);
//        LOG.info("NetconfEventSourceManager initialized.");
//    }
//
//    private Map<String,String> namespaceToStreamMapping(final List<NamespaceToStream> namespaceMapping) {
//        final Map<String, String> streamMap = new HashMap<>(namespaceMapping.size());
//
//        for (final NamespaceToStream nToS  : namespaceMapping) {
//            streamMap.put(nToS.getUrnPrefix(), nToS.getStreamName());
//        }
//
//        return streamMap;
//    }
//
//    @Override
//    public void onDataChanged(final AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> event) {
//
//        LOG.debug("[DataChangeEvent<InstanceIdentifier<?>, DataObject>: {}]", event);
//        for (final Map.Entry<InstanceIdentifier<?>, DataObject> changeEntry : event.getCreatedData().entrySet()) {
//            if (changeEntry.getValue() instanceof Node) {
//                nodeCreated(changeEntry.getKey(),(Node) changeEntry.getValue());
//            }
//        }
//
//        for (final Map.Entry<InstanceIdentifier<?>, DataObject> changeEntry : event.getUpdatedData().entrySet()) {
//            if (changeEntry.getValue() instanceof Node) {
//                nodeUpdated(changeEntry.getKey(),(Node) changeEntry.getValue());
//            }
//        }
//
//        for(InstanceIdentifier<?> removePath : event.getRemovedPaths()){
//            DataObject removeObject = event.getOriginalData().get(removePath);
//            if(removeObject instanceof Node){
//                nodeRemoved(removePath);
//            }
//        }
//
//    }
//
//    private void nodeCreated(final InstanceIdentifier<?> key, final Node node){
//        Preconditions.checkNotNull(key);
//        if(validateNode(node) == false){
//            LOG.warn("NodeCreated event : Node [{}] is null or not valid.", key.toString());
//            return;
//        }
//        LOG.info("Netconf event source [{}] is creating...", key.toString());
//        NetconfEventSourceRegistration nesr = NetconfEventSourceRegistration.create(key, node, this);
//        if(nesr != null){
//            NetconfEventSourceRegistration nesrOld = registrationMap.put(key, nesr);
//            if(nesrOld != null){
//                nesrOld.close();
//            }
//        }
//    }
//
//    private void nodeUpdated(final InstanceIdentifier<?> key, final Node node){
//        Preconditions.checkNotNull(key);
//        if(validateNode(node) == false){
//            LOG.warn("NodeUpdated event : Node [{}] is null or not valid.", key.toString());
//            return;
//        }
//
//        LOG.info("Netconf event source [{}] is updating...", key.toString());
//        NetconfEventSourceRegistration nesr = registrationMap.get(key);
//        if(nesr != null){
//            nesr.updateStatus();
//        } else {
//            nodeCreated(key, node);
//        }
//    }
//
//    private void nodeRemoved(final InstanceIdentifier<?> key){
//        Preconditions.checkNotNull(key);
//        LOG.info("Netconf event source [{}] is removing...", key.toString());
//        NetconfEventSourceRegistration nesr = registrationMap.remove(key);
//        if(nesr != null){
//            nesr.close();
//        }
//    }
//
//    private boolean validateNode(final Node node){
//        if(node == null){
//            return false;
//        }
//        return isNetconfNode(node);
//    }
//
//    Map<String, String> getStreamMap() {
//        return streamMap;
//    }
//
//    DOMNotificationPublishService getPublishService() {
//        return publishService;
//    }
//
//    DOMMountPointService getDomMounts() {
//        return domMounts;
//    }
//
//    EventSourceRegistry getEventSourceRegistry() {
//        return eventSourceRegistry;
//    }
//
//    MountPointService getMountPointService() {
//        return mountPointService;
//    }
//
//    private boolean isNetconfNode(final Node node)  {
//        return node.getAugmentation(NetconfNode.class) != null ;
//    }
//
//    @Override
//    public void close() {
//        listenerRegistration.close();
//        for(final NetconfEventSourceRegistration reg : registrationMap.values()){
//            reg.close();
//        }
//        registrationMap.clear();
//    }
//
//}