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.vpnservice.neutronvpn.api.utils.NeutronUtils;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.Networks;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.elan.rev150602.ElanInstances;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.elan.rev150602.elan.instances.ElanInstance;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.elan.rev150602.elan.instances.ElanInstanceBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.elan.rev150602.elan.instances.ElanInstanceKey;
  26 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31
  32 public class NeutronNetworkChangeListener extends AbstractDataChangeListener<Network> implements AutoCloseable {
  33     private static final Logger LOG = LoggerFactory.getLogger(NeutronNetworkChangeListener.class);
  34
  35     private ListenerRegistration<DataChangeListener> listenerRegistration;
  36     private final DataBroker broker;
  37     private NeutronvpnManager nvpnManager;
  38
  39
  40     public NeutronNetworkChangeListener(final DataBroker db, NeutronvpnManager nVpnMgr) {
  41         super(Network.class);
  42         broker = db;
  43         nvpnManager = nVpnMgr;
  44         registerListener(db);
  45     }
  46
  47     @Override
  48     public void close() throws Exception {
  49         if (listenerRegistration != null) {
  50             try {
  51                 listenerRegistration.close();
  52             } catch (final Exception e) {
  53                 LOG.error("Error when cleaning up DataChangeListener.", e);
  54             }
  55             listenerRegistration = null;
  56         }
  57         LOG.info("N_Network listener Closed");
  58     }
  59
  60
  61     private void registerListener(final DataBroker db) {
  62         try {
  63             listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  64                     InstanceIdentifier.create(Neutron.class).
  65                             child(Networks.class).child(Network.class),
  66                     NeutronNetworkChangeListener.this, DataChangeScope.SUBTREE);
  67             LOG.info("Neutron Manager Network DataChange listener registration Success!");
  68         } catch (final Exception e) {
  69             LOG.error("Neutron Manager Network DataChange listener registration fail!", e);
  70             throw new IllegalStateException("Neutron Manager Network DataChange listener registration failed.", e);
  71         }
  72     }
  73
  74     @Override
  75     protected void add(InstanceIdentifier<Network> identifier, Network input) {
  76         if (LOG.isTraceEnabled()) {
  77             LOG.trace("Adding Network : key: " + identifier + ", value=" + input);
  78         }
  79         //Create ELAN instance for this network
  80         createElanInstance(input);
  81     }
  82
  83     @Override
  84     protected void remove(InstanceIdentifier<Network> identifier, Network input) {
  85         if (LOG.isTraceEnabled()) {
  86             LOG.trace("Removing Network : key: " + identifier + ", value=" + input);
  87         }
  88         //Delete ELAN instance for this network
  89         deleteElanInstance(input.getUuid().getValue());
  90     }
  91
  92     @Override
  93     protected void update(InstanceIdentifier<Network> identifier, Network original, Network update) {
  94         if (LOG.isTraceEnabled()) {
  95             LOG.trace("Updating Network : key: " + identifier + ", original value=" + original + ", update value=" +
  96                     update);
  97         }
  98     }
  99
 100     private void createElanInstance(Network input) {
 101         String elanInstanceName = input.getUuid().getValue();
 102         String segmentationId = NeutronUtils.getSegmentationIdFromNeutronNetwork(input);
 103         ElanInstanceBuilder elanInstanceBuilder = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName);
 104         if (segmentationId != null) {
 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 }