gerrit.onap Code Review - ccsdk/features.git/blob

   1 /*******************************************************************************
   2  * ============LICENSE_START========================================================================
   3  * ONAP : ccsdk feature sdnr wt
   4  * =================================================================================================
   5  * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
   6  * =================================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
   8  * in compliance with the License. You may obtain a copy of the License at
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software distributed under the License
  13  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  14  * or implied. See the License for the specific language governing permissions and limitations under
  15  * the License.
  16  * ============LICENSE_END==========================================================================
  17  ******************************************************************************/
  18 package org.onap.ccsdk.features.sdnr.wt.devicemanager.impl.listener;
  19
  20 import java.util.Collection;
  21 import org.onap.ccsdk.features.sdnr.wt.devicemanager.impl.DeviceManagerService;
  22 import org.onap.ccsdk.features.sdnr.wt.devicemanager.impl.DeviceManagerService.Action;
  23 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  24 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  25 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  26 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification.ModificationType;
  27 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  28 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  29 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNodeConnectionStatus.ConnectionStatus;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.ClusteredConnectionStatus;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.network.topology.topology.topology.types.TopologyNetconf;
  34 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  35 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  36 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  37 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  38 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  39 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  40 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  41 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  42 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  43 import org.slf4j.Logger;
  44 import org.slf4j.LoggerFactory;
  45
  46 // 07.09.18 Switched to DataTreeChangeListener from ClusteredDataTreeChangeListener -> DM Service is
  47 // running at all nodes
  48 // This is not correct
  49 @SuppressWarnings("deprecation")
  50 public class NetconfChangeListener implements ClusteredDataTreeChangeListener<Node>, AutoCloseable {
  51
  52     private static final Logger LOG = LoggerFactory.getLogger(NetconfChangeListener.class);
  53
  54     private static final InstanceIdentifier<Node> NETCONF_NODE_TOPO_IID =
  55             InstanceIdentifier.create(NetworkTopology.class)
  56                     .child(Topology.class, new TopologyKey(new TopologyId(TopologyNetconf.QNAME.getLocalName())))
  57                     .child(Node.class);
  58     // Name of ODL controller NETCONF instance
  59     private static final String CONTROLLER = "controller-config";
  60
  61     private final DeviceManagerService deviceManagerService;
  62     private final DataBroker dataBroker;
  63     private ListenerRegistration<NetconfChangeListener> dlcReg;
  64
  65     public NetconfChangeListener(DeviceManagerService deviceManagerService, DataBroker dataBroker) {
  66         this.deviceManagerService = deviceManagerService;
  67         this.dataBroker = dataBroker;
  68     }
  69
  70     public void register() {
  71         DataTreeIdentifier<Node> treeId = new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL, NETCONF_NODE_TOPO_IID);
  72
  73         dlcReg = dataBroker.registerDataTreeChangeListener(treeId, this);
  74     }
  75
  76     @Override
  77     public void close() {
  78         if (dlcReg != null) {
  79             dlcReg.close();
  80         }
  81     }
  82     /*---------------------------------------------------------------------------
  83      * Listener
  84      */
  85     @Override
  86     public void onDataTreeChanged(Collection<DataTreeModification<Node>> changes) {
  87         LOG.debug("OnDataChange, TreeChange, changes:{}", changes.size());
  88
  89         for (final DataTreeModification<Node> change : changes) {
  90             final DataObjectModification<Node> root = change.getRootNode();
  91             final ModificationType modificationType = root.getModificationType();
  92             if (LOG.isTraceEnabled()) {
  93                 LOG.trace("Handle this modificationType:{} path:{} root:{}", modificationType, change.getRootPath(),
  94                         root);
  95             }
  96             switch (modificationType) {
  97                 case SUBTREE_MODIFIED:
  98                     // Change of subtree information
  99                     // update(change); OLD
 100                     doProcessing(Action.UPDATE, root.getDataAfter());
 101                     break;
 102                 case WRITE:
 103                     // Create or modify top level node
 104                     // Treat an overwrite as an update
 105                     boolean update = root.getDataBefore() != null;
 106                     if (update) {
 107                         // update(change);
 108                         doProcessing(Action.UPDATE, root.getDataAfter());
 109                     } else {
 110                         // add(change);
 111                         doProcessing(Action.CREATE, root.getDataAfter());
 112                     }
 113                     break;
 114                 case DELETE:
 115                     // Node removed
 116                     // remove(change);
 117                     doProcessing(Action.REMOVE, root.getDataBefore());
 118                     break;
 119             }
 120         }
 121     }
 122
 123     /*
 124      * ---------------------------------------------------------------- Functions to select the right
 125      * node from DataObjectModification
 126      */
 127
 128     /**
 129      * Process event and forward to clients
 130      *
 131      * @param action
 132      * @param node Basis node
 133      */
 134     private void doProcessing(Action action, Node node) {
 135
 136         NodeId nodeId = null;
 137         NetconfNode nnode = null;
 138         NodeKey nodeKey = null;
 139
 140         try {
 141             if (node != null) {
 142                 if ((nodeKey = node.key()) != null) {
 143                     nodeId = nodeKey.getNodeId();
 144                 }
 145                 nnode = node.augmentation(NetconfNode.class);
 146             }
 147
 148             if (node == null || nnode == null || nodeId == null || nodeKey == null) {
 149                 LOG.warn("Unexpected node {}, netconf node {} or key {} or id {}", node, nnode, nodeKey, nodeId);
 150             } else {
 151                 String nodeIdString = nodeId.getValue();
 152                 // Do not forward any controller related events to devicemanager
 153                 if (nodeIdString.equals(CONTROLLER)) {
 154                         LOG.debug("Stop processing for [{}]", nodeIdString);
 155                 } else {
 156
 157                         ClusteredConnectionStatus ccsts = nnode.getClusteredConnectionStatus();
 158                                 ConnectionStatus csts = nnode.getConnectionStatus();
 159                                 LOG.debug("NETCONF Node processing with id {} action {} status {} cluster status {}", nodeIdString,
 160                                                 action, csts, ccsts);
 161                                 // Action forwarded to devicehandler
 162                                 deviceManagerService.netconfChangeHandler(action, csts, nodeId, nnode);
 163                 }
 164             }
 165         } catch (NullPointerException e) {
 166                 LOG.warn("Unexpected null .. stop processing.", e);
 167         }
 168     }
 169
 170 }