networkmodel/src/main/java/org/opendaylight/transportpce/networkmodel/NetConfTopologyListener.java

   1 /*
   2  * Copyright © 2016 Orange and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.transportpce.networkmodel;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  11 import com.google.common.util.concurrent.ListenableFuture;
  12 import java.util.Collection;
  13 import java.util.Map;
  14 import java.util.Optional;
  15 import java.util.concurrent.ConcurrentHashMap;
  16 import java.util.concurrent.ExecutionException;
  17 import javax.annotation.Nonnull;
  18 import org.opendaylight.mdsal.binding.api.DataBroker;
  19 import org.opendaylight.mdsal.binding.api.DataObjectModification;
  20 import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
  21 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  22 import org.opendaylight.mdsal.binding.api.MountPoint;
  23 import org.opendaylight.mdsal.binding.api.NotificationService;
  24 import org.opendaylight.mdsal.binding.api.RpcConsumerRegistry;
  25 import org.opendaylight.transportpce.common.StringConstants;
  26 import org.opendaylight.transportpce.common.device.DeviceTransactionManager;
  27 import org.opendaylight.transportpce.common.mapping.PortMapping;
  28 import org.opendaylight.transportpce.networkmodel.dto.NodeRegistration;
  29 import org.opendaylight.transportpce.networkmodel.service.NetworkModelService;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.CreateSubscriptionInputBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.CreateSubscriptionOutput;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.NotificationsService;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.StreamNameType;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNodeConnectionStatus.ConnectionStatus;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.available.capabilities.AvailableCapability;
  37 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  38 import org.opendaylight.yangtools.yang.common.RpcResult;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 public class NetConfTopologyListener implements DataTreeChangeListener<Node> {
  43
  44     private static final Logger LOG = LoggerFactory.getLogger(NetConfTopologyListener.class);
  45     private static final String RPC_SERVICE_FAILED = "Failed to get RpcService for node {}";
  46     private final NetworkModelService networkModelService;
  47     private final DataBroker dataBroker;
  48     private final DeviceTransactionManager deviceTransactionManager;
  49     private final Map<String, NodeRegistration> registrations;
  50     private final PortMapping portMapping;
  51
  52     public NetConfTopologyListener(final NetworkModelService networkModelService, final DataBroker dataBroker,
  53              DeviceTransactionManager deviceTransactionManager, PortMapping portMapping) {
  54         this.networkModelService = networkModelService;
  55         this.dataBroker = dataBroker;
  56         this.deviceTransactionManager = deviceTransactionManager;
  57         this.registrations = new ConcurrentHashMap<>();
  58         this.portMapping = portMapping;
  59     }
  60
  61     public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<Node>> changes) {
  62         LOG.info("onDataTreeChanged - {}", this.getClass().getSimpleName());
  63         for (DataTreeModification<Node> change : changes) {
  64             DataObjectModification<Node> rootNode = change.getRootNode();
  65             if (rootNode.getDataBefore() == null) {
  66                 continue;
  67             }
  68             String nodeId = rootNode.getDataBefore().key().getNodeId().getValue();
  69             NetconfNode netconfNodeBefore = rootNode.getDataBefore().augmentation(NetconfNode.class);
  70             switch (rootNode.getModificationType()) {
  71                 case DELETE:
  72                     this.networkModelService.deleteOpenRoadmnode(nodeId);
  73                     onDeviceDisConnected(nodeId);
  74                     LOG.info("Device {} correctly disconnected from controller", nodeId);
  75                     break;
  76                 case WRITE:
  77                     NetconfNode netconfNodeAfter = rootNode.getDataAfter().augmentation(NetconfNode.class);
  78                     if (ConnectionStatus.Connecting.equals(netconfNodeBefore.getConnectionStatus())
  79                         && ConnectionStatus.Connected.equals(netconfNodeAfter.getConnectionStatus())) {
  80                         LOG.info("Connecting Node: {}", nodeId);
  81                         Optional<AvailableCapability> deviceCapabilityOpt = netconfNodeAfter
  82                             .getAvailableCapabilities().getAvailableCapability().stream()
  83                             .filter(cp -> cp.getCapability().contains(StringConstants.OPENROADM_DEVICE_MODEL_NAME))
  84                             .sorted((c1, c2) -> c2.getCapability().compareTo(c1.getCapability()))
  85                             .findFirst();
  86                         if (deviceCapabilityOpt.isEmpty()) {
  87                             LOG.error("Unable to get openroadm-device-capability");
  88                             return;
  89                         }
  90                         this.networkModelService
  91                             .createOpenRoadmNode(nodeId, deviceCapabilityOpt.get().getCapability());
  92                         onDeviceConnected(nodeId,deviceCapabilityOpt.get().getCapability());
  93                         LOG.info("Device {} correctly connected to controller", nodeId);
  94                     }
  95                     if (ConnectionStatus.Connected.equals(netconfNodeBefore.getConnectionStatus())
  96                         && ConnectionStatus.Connecting.equals(netconfNodeAfter.getConnectionStatus())) {
  97                         LOG.warn("Node: {} is being disconnected", nodeId);
  98                     }
  99                     break;
 100                 default:
 101                     LOG.debug("Unknown modification type {}", rootNode.getModificationType().name());
 102                     break;
 103             }
 104         }
 105     }
 106
 107     private void onDeviceConnected(final String nodeId, String openRoadmVersion) {
 108         LOG.info("onDeviceConnected: {}", nodeId);
 109         Optional<MountPoint> mountPointOpt = this.deviceTransactionManager.getDeviceMountPoint(nodeId);
 110         MountPoint mountPoint;
 111         if (mountPointOpt.isPresent()) {
 112             mountPoint = mountPointOpt.get();
 113         } else {
 114             LOG.error("Failed to get mount point for node {}", nodeId);
 115             return;
 116         }
 117         final Optional<NotificationService> notificationService = mountPoint.getService(NotificationService.class);
 118         if (!notificationService.isPresent()) {
 119             LOG.error(RPC_SERVICE_FAILED, nodeId);
 120             return;
 121         }
 122         NodeRegistration nodeRegistration = new NodeRegistration(nodeId, openRoadmVersion,
 123             notificationService.get(), this.dataBroker, this.portMapping);
 124         nodeRegistration.registerListeners();
 125         registrations.put(nodeId, nodeRegistration);
 126         String streamName = "NETCONF";
 127         subscribeStream(mountPoint, streamName, nodeId);
 128     }
 129
 130     private void onDeviceDisConnected(final String nodeId) {
 131         LOG.info("onDeviceDisConnected: {}", nodeId);
 132         NodeRegistration nodeRegistration = this.registrations.remove(nodeId);
 133         nodeRegistration.unregisterListeners();
 134     }
 135
 136     private boolean subscribeStream(MountPoint mountPoint, String streamName, String nodeId) {
 137         final Optional<RpcConsumerRegistry> service = mountPoint.getService(RpcConsumerRegistry.class);
 138         if (!service.isPresent()) {
 139             return false;
 140         }
 141         final NotificationsService rpcService = service.get().getRpcService(NotificationsService.class);
 142         if (rpcService == null) {
 143             LOG.error(RPC_SERVICE_FAILED, nodeId);
 144             return false;
 145         }
 146         final CreateSubscriptionInputBuilder createSubscriptionInputBuilder = new CreateSubscriptionInputBuilder()
 147             .setStream(new StreamNameType(streamName));
 148         LOG.info("Triggering notification stream {} for node {}", streamName, nodeId);
 149         ListenableFuture<RpcResult<CreateSubscriptionOutput>> subscription = rpcService
 150             .createSubscription(createSubscriptionInputBuilder.build());
 151         try {
 152             subscription.get();
 153         } catch (InterruptedException | ExecutionException e) {
 154             LOG.error("Error during subscription to stream {}", streamName, e);
 155         }
 156         return true;
 157     }
 158
 159     @VisibleForTesting
 160     public NetConfTopologyListener(final NetworkModelService networkModelService, final DataBroker dataBroker,
 161         DeviceTransactionManager deviceTransactionManager, PortMapping portMapping,
 162         Map<String, NodeRegistration> registrations) {
 163         this.networkModelService = networkModelService;
 164         this.dataBroker = dataBroker;
 165         this.deviceTransactionManager = deviceTransactionManager;
 166         this.portMapping = portMapping;
 167         this.registrations = registrations;
 168     }
 169 }