neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/vpnservice/neutronvpn/NeutronNetworkChangeListener.java

   1 /*
   2  * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. 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
   9 package org.opendaylight.vpnservice.neutronvpn;
  10
  11
  12 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  13 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  14 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener;
  17 import org.opendaylight.vpnservice.mdsalutil.MDSALUtil;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.elan.rev150602.ElanInstances;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.elan.rev150602.elan.instances.ElanInstance;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.elan.rev150602.elan.instances.ElanInstanceBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.elan.rev150602.elan.instances.ElanInstanceKey;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.Networks;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  25 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30
  31 public class NeutronNetworkChangeListener extends AbstractDataChangeListener<Network> implements AutoCloseable {
  32     private static final Logger LOG = LoggerFactory.getLogger(NeutronNetworkChangeListener.class);
  33
  34     private ListenerRegistration<DataChangeListener> listenerRegistration;
  35     private final DataBroker broker;
  36     private NeutronvpnManager nvpnManager;
  37
  38
  39     public NeutronNetworkChangeListener(final DataBroker db, NeutronvpnManager nVpnMgr) {
  40         super(Network.class);
  41         broker = db;
  42         nvpnManager = nVpnMgr;
  43         registerListener(db);
  44     }
  45
  46     @Override
  47     public void close() throws Exception {
  48         if (listenerRegistration != null) {
  49             try {
  50                 listenerRegistration.close();
  51             } catch (final Exception e) {
  52                 LOG.error("Error when cleaning up DataChangeListener.", e);
  53             }
  54             listenerRegistration = null;
  55         }
  56         LOG.info("N_Network listener Closed");
  57     }
  58
  59
  60     private void registerListener(final DataBroker db) {
  61         try {
  62             listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  63                     InstanceIdentifier.create(Neutron.class).
  64                             child(Networks.class).child(Network.class),
  65                     NeutronNetworkChangeListener.this, DataChangeScope.SUBTREE);
  66             LOG.info("Neutron Manager Network DataChange listener registration Success!");
  67         } catch (final Exception e) {
  68             LOG.error("Neutron Manager Network DataChange listener registration fail!", e);
  69             throw new IllegalStateException("Neutron Manager Network DataChange listener registration failed.", e);
  70         }
  71     }
  72
  73     @Override
  74     protected void add(InstanceIdentifier<Network> identifier, Network input) {
  75         if (LOG.isTraceEnabled()) {
  76             LOG.trace("Adding Network : key: " + identifier + ", value=" + input);
  77         }
  78         //Create ELAN instance for this network
  79         createElanInstance(input);
  80     }
  81
  82     @Override
  83     protected void remove(InstanceIdentifier<Network> identifier, Network input) {
  84         if (LOG.isTraceEnabled()) {
  85             LOG.trace("Removing Network : key: " + identifier + ", value=" + input);
  86         }
  87         //Delete ELAN instance for this network
  88         deleteElanInstance(input.getUuid().getValue());
  89     }
  90
  91     @Override
  92     protected void update(InstanceIdentifier<Network> identifier, Network original, Network update) {
  93         if (LOG.isTraceEnabled()) {
  94             LOG.trace("Updating Network : key: " + identifier + ", original value=" + original + ", update value=" +
  95                     update);
  96         }
  97     }
  98
  99     private void createElanInstance(Network input) {
 100         String elanInstanceName = input.getUuid().getValue();
 101         String segmentationId = NeutronvpnUtils.getSegmentationIdFromNeutronNetwork(input);
 102         ElanInstanceBuilder elanInstanceBuilder = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName);
 103         if (segmentationId != null) {
 104             //TODO: Uncomment below line while ELAN changes are ported
 105             //elanInstanceBuilder.setVni(Long.valueOf(segmentationId));
 106         }
 107         elanInstanceBuilder.setKey(new ElanInstanceKey(elanInstanceName));
 108         ElanInstance elanInstance = elanInstanceBuilder.build();
 109         InstanceIdentifier<ElanInstance> id = InstanceIdentifier.builder(ElanInstances.class)
 110                 .child(ElanInstance.class, new ElanInstanceKey(elanInstanceName)).build();
 111         MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION, id, elanInstance);
 112     }
 113
 114     private void deleteElanInstance(String elanInstanceName) {
 115         InstanceIdentifier<ElanInstance> id = InstanceIdentifier.builder(ElanInstances.class)
 116                 .child(ElanInstance.class, new ElanInstanceKey(elanInstanceName)).build();
 117         MDSALUtil.syncDelete(broker, LogicalDatastoreType.CONFIGURATION, id);
 118     }
 119
 120 }