vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/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.netvirt.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.genius.mdsalutil.AbstractDataChangeListener;
  17 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  18 import org.opendaylight.netvirt.neutronvpn.api.utils.NeutronUtils;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.SegmentTypeBase;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceKey;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.ext.rev150712.NetworkL3Extension;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.Networks;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  28 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33
  34 public class NeutronNetworkChangeListener extends AbstractDataChangeListener<Network> implements AutoCloseable {
  35     private static final Logger LOG = LoggerFactory.getLogger(NeutronNetworkChangeListener.class);
  36
  37     private ListenerRegistration<DataChangeListener> listenerRegistration;
  38     private final DataBroker broker;
  39     private NeutronvpnManager nvpnManager;
  40     private NeutronvpnNatManager nvpnNatManager;
  41
  42
  43     public NeutronNetworkChangeListener(final DataBroker db, NeutronvpnManager nVpnMgr,
  44                                         NeutronvpnNatManager nVpnNatMgr) {
  45         super(Network.class);
  46         broker = db;
  47         nvpnManager = nVpnMgr;
  48         nvpnNatManager = nVpnNatMgr;
  49         registerListener(db);
  50     }
  51
  52     @Override
  53     public void close() throws Exception {
  54         if (listenerRegistration != null) {
  55             try {
  56                 listenerRegistration.close();
  57             } catch (final Exception e) {
  58                 LOG.error("Error when cleaning up DataChangeListener.", e);
  59             }
  60             listenerRegistration = null;
  61         }
  62         LOG.info("N_Network listener Closed");
  63     }
  64
  65
  66     private void registerListener(final DataBroker db) {
  67         try {
  68             listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  69                     InstanceIdentifier.create(Neutron.class).
  70                             child(Networks.class).child(Network.class),
  71                     NeutronNetworkChangeListener.this, DataChangeScope.SUBTREE);
  72             LOG.info("Neutron Manager Network DataChange listener registration Success!");
  73         } catch (final Exception e) {
  74             LOG.error("Neutron Manager Network DataChange listener registration fail!", e);
  75             throw new IllegalStateException("Neutron Manager Network DataChange listener registration failed.", e);
  76         }
  77     }
  78
  79     @Override
  80     protected void add(InstanceIdentifier<Network> identifier, Network input) {
  81         if (LOG.isTraceEnabled()) {
  82             LOG.trace("Adding Network : key: " + identifier + ", value=" + input);
  83         }
  84         if (!NeutronvpnUtils.isNetworkTypeSupported(input)) {
  85             //FIXME: This should be removed when support for GRE network types is added
  86             LOG.error("Neutronvpn doesn't support gre network provider type for this network {}.", input);
  87             return;
  88         }
  89         // Create ELAN instance for this network
  90         ElanInstance elanInstance = createElanInstance(input);
  91         // Create ELAN interface and IETF interfaces for the physical network
  92         NeutronvpnServiceAccessor.getElanProvider().createExternalElanNetwork(elanInstance);
  93         if (input.getAugmentation(NetworkL3Extension.class).isExternal()) {
  94             nvpnNatManager.addExternalNetwork(input);
  95             NeutronvpnUtils.addToNetworkCache(input);
  96         }
  97     }
  98
  99     @Override
 100     protected void remove(InstanceIdentifier<Network> identifier, Network input) {
 101         if (LOG.isTraceEnabled()) {
 102             LOG.trace("Removing Network : key: " + identifier + ", value=" + input);
 103         }
 104         if (!NeutronvpnUtils.isNetworkTypeSupported(input)) {
 105             //FIXME: This should be removed when support for GRE network types is added
 106             LOG.error("Neutronvpn doesn't support gre network provider type for this network {}.", input);
 107             return;
 108         }
 109         //Delete ELAN instance for this network
 110         String elanInstanceName = input.getUuid().getValue();
 111         deleteElanInstance(elanInstanceName);
 112         if (input.getAugmentation(NetworkL3Extension.class).isExternal()) {
 113             nvpnNatManager.removeExternalNetwork(input);
 114             NeutronvpnUtils.removeFromNetworkCache(input);
 115         }
 116
 117         // TODO: delete elan-interfaces for physnet port
 118     }
 119
 120     @Override
 121     protected void update(InstanceIdentifier<Network> identifier, Network original, Network update) {
 122         if (LOG.isTraceEnabled()) {
 123             LOG.trace("Updating Network : key: " + identifier + ", original value=" + original + ", update value=" +
 124                     update);
 125         }
 126     }
 127
 128     private ElanInstance createElanInstance(Network input) {
 129         String elanInstanceName = input.getUuid().getValue();
 130         Class<? extends SegmentTypeBase> segmentType = NeutronvpnUtils.getSegmentTypeFromNeutronNetwork(input);
 131         String segmentationId = NeutronUtils.getSegmentationIdFromNeutronNetwork(input);
 132         String physicalNetworkName = NeutronvpnUtils.getPhysicalNetworkName(input);
 133         ElanInstanceBuilder elanInstanceBuilder = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName);
 134         if (segmentType != null) {
 135             elanInstanceBuilder.setSegmentType(segmentType);
 136             if (segmentationId != null) {
 137                 elanInstanceBuilder.setSegmentationId(Long.valueOf(segmentationId));
 138             }
 139             if (physicalNetworkName != null) {
 140                 elanInstanceBuilder.setPhysicalNetworkName(physicalNetworkName);
 141             }
 142         }
 143         elanInstanceBuilder.setKey(new ElanInstanceKey(elanInstanceName));
 144         ElanInstance elanInstance = elanInstanceBuilder.build();
 145         InstanceIdentifier<ElanInstance> id = InstanceIdentifier.builder(ElanInstances.class)
 146                 .child(ElanInstance.class, new ElanInstanceKey(elanInstanceName)).build();
 147         MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION, id, elanInstance);
 148         return elanInstance;
 149     }
 150
 151     private void deleteElanInstance(String elanInstanceName) {
 152         InstanceIdentifier<ElanInstance> id = InstanceIdentifier.builder(ElanInstances.class)
 153                 .child(ElanInstance.class, new ElanInstanceKey(elanInstanceName)).build();
 154         MDSALUtil.syncDelete(broker, LogicalDatastoreType.CONFIGURATION, id);
 155     }
 156
 157 }