neutronvpn/impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronSubnetChangeListener.java

   1 /*
   2  * Copyright (c) 2016, 2017 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 package org.opendaylight.netvirt.neutronvpn;
   9
  10 import com.google.common.base.Optional;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import javax.annotation.PostConstruct;
  14 import javax.inject.Inject;
  15 import javax.inject.Singleton;
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  19 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  20 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  21 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ProviderTypes;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.NetworkAttributes;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMap;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMapBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMapKey;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 @Singleton
  37 public class NeutronSubnetChangeListener extends AsyncDataTreeChangeListenerBase<Subnet, NeutronSubnetChangeListener> {
  38     private static final Logger LOG = LoggerFactory.getLogger(NeutronSubnetChangeListener.class);
  39     private final DataBroker dataBroker;
  40     private final NeutronvpnManager nvpnManager;
  41     private final NeutronExternalSubnetHandler externalSubnetHandler;
  42     private final NeutronvpnUtils neutronvpnUtils;
  43
  44     @Inject
  45     public NeutronSubnetChangeListener(final DataBroker dataBroker, final NeutronvpnManager neutronvpnManager,
  46             final NeutronExternalSubnetHandler externalSubnetHandler, final NeutronvpnUtils neutronvpnUtils) {
  47         super(Subnet.class, NeutronSubnetChangeListener.class);
  48         this.dataBroker = dataBroker;
  49         this.nvpnManager = neutronvpnManager;
  50         this.externalSubnetHandler = externalSubnetHandler;
  51         this.neutronvpnUtils = neutronvpnUtils;
  52     }
  53
  54     @Override
  55     @PostConstruct
  56     public void init() {
  57         LOG.info("{} init", getClass().getSimpleName());
  58         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  59     }
  60
  61     @Override
  62     protected InstanceIdentifier<Subnet> getWildCardPath() {
  63         return InstanceIdentifier.create(Neutron.class).child(Subnets.class).child(Subnet.class);
  64     }
  65
  66     @Override
  67     protected NeutronSubnetChangeListener getDataTreeChangeListener() {
  68         return NeutronSubnetChangeListener.this;
  69     }
  70
  71
  72     @Override
  73     protected void add(InstanceIdentifier<Subnet> identifier, Subnet input) {
  74         LOG.trace("Adding Subnet : key: {}, value={}", identifier, input);
  75         Uuid networkId = input.getNetworkId();
  76         Uuid subnetId = input.getUuid();
  77         Network network = neutronvpnUtils.getNeutronNetwork(networkId);
  78         if (network == null || !NeutronvpnUtils.isNetworkTypeSupported(network)) {
  79             LOG.warn("neutron vpn received a subnet add() for a network without a provider extension augmentation "
  80                             + "or with an unsupported network type for the subnet {} which is part of network {}",
  81                     subnetId.getValue(), network);
  82             return;
  83         }
  84         neutronvpnUtils.addToSubnetCache(input);
  85         handleNeutronSubnetCreated(input, network);
  86         externalSubnetHandler.handleExternalSubnetAdded(network, subnetId, null);
  87     }
  88
  89     @Override
  90     protected void remove(InstanceIdentifier<Subnet> identifier, Subnet input) {
  91         LOG.trace("Removing subnet : key: {}, value={}", identifier, input);
  92         Uuid networkId = input.getNetworkId();
  93         Uuid subnetId = input.getUuid();
  94         Network network = neutronvpnUtils.getNeutronNetwork(networkId);
  95         if (network == null || !NeutronvpnUtils.isNetworkTypeSupported(network)) {
  96             LOG.warn("neutron vpn received a subnet remove() for a network without a provider extension augmentation "
  97                             + "or with an unsupported network type for the subnet {} which is part of network {}",
  98                     subnetId.getValue(), network);
  99             return;
 100         }
 101         handleNeutronSubnetDeleted(subnetId, networkId);
 102         externalSubnetHandler.handleExternalSubnetRemoved(network, subnetId);
 103         neutronvpnUtils.removeFromSubnetCache(input);
 104     }
 105
 106     @Override
 107     protected void update(InstanceIdentifier<Subnet> identifier, Subnet original, Subnet update) {
 108         LOG.trace("Updating Subnet : key: {}, original value={}, update value={}", identifier, original, update);
 109         neutronvpnUtils.addToSubnetCache(update);
 110     }
 111
 112     private void handleNeutronSubnetCreated(Subnet subnet, Network network) {
 113         Uuid networkId = network.getUuid();
 114         Uuid subnetId = subnet.getUuid();
 115         ProviderTypes providerType = NeutronvpnUtils.getProviderNetworkType(network);
 116         String segmentationId = NeutronvpnUtils.getSegmentationIdFromNeutronNetwork(network);
 117         nvpnManager.createSubnetmapNode(subnetId, String.valueOf(subnet.getCidr().getValue()),
 118                 subnet.getTenantId(), networkId,
 119                 providerType != null ? NetworkAttributes.NetworkType.valueOf(providerType.getName()) : null,
 120                 segmentationId != null ? Long.parseLong(segmentationId) : 0L);
 121         createSubnetToNetworkMapping(subnetId, networkId);
 122     }
 123
 124     private void handleNeutronSubnetDeleted(Uuid subnetId, Uuid networkId) {
 125         Uuid vpnId = neutronvpnUtils.getVpnForNetwork(networkId);
 126         if (vpnId != null) {
 127             nvpnManager.removeSubnetFromVpn(vpnId, subnetId, null /* internet-vpn-id */);
 128         }
 129         if (networkId != null) {
 130             deleteSubnetToNetworkMapping(subnetId, networkId);
 131         }
 132         nvpnManager.deleteSubnetMapNode(subnetId);
 133     }
 134
 135     // TODO Clean up the exception handling
 136     @SuppressWarnings("checkstyle:IllegalCatch")
 137     private void createSubnetToNetworkMapping(Uuid subnetId, Uuid networkId) {
 138         try {
 139             InstanceIdentifier<NetworkMap>  networkMapIdentifier = NeutronvpnUtils.buildNetworkMapIdentifier(networkId);
 140             Optional<NetworkMap> optionalNetworkMap = SingleTransactionDataBroker.syncReadOptional(dataBroker,
 141                     LogicalDatastoreType.CONFIGURATION, networkMapIdentifier);
 142             NetworkMapBuilder nwMapBuilder = null;
 143             if (optionalNetworkMap.isPresent()) {
 144                 nwMapBuilder = new NetworkMapBuilder(optionalNetworkMap.get());
 145             } else {
 146                 nwMapBuilder = new NetworkMapBuilder().withKey(new NetworkMapKey(networkId)).setNetworkId(networkId);
 147                 LOG.debug("Adding a new network node in NetworkMaps DS for network {}", networkId.getValue());
 148             }
 149             List<Uuid> subnetIdList = nwMapBuilder.getSubnetIdList();
 150             if (subnetIdList == null) {
 151                 subnetIdList = new ArrayList<>();
 152             }
 153             subnetIdList.add(subnetId);
 154             nwMapBuilder.setSubnetIdList(subnetIdList);
 155             MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier, nwMapBuilder
 156                     .build());
 157             LOG.debug("Created subnet-network mapping for subnet {} network {}", subnetId.getValue(),
 158                     networkId.getValue());
 159         } catch (ReadFailedException | RuntimeException e) {
 160             LOG.error("Create subnet-network mapping failed for subnet {} network {}", subnetId.getValue(),
 161                     networkId.getValue());
 162         }
 163     }
 164
 165     // TODO Clean up the exception handling
 166     @SuppressWarnings("checkstyle:IllegalCatch")
 167     private void deleteSubnetToNetworkMapping(Uuid subnetId, Uuid networkId) {
 168         try {
 169             InstanceIdentifier<NetworkMap>  networkMapIdentifier = NeutronvpnUtils.buildNetworkMapIdentifier(networkId);
 170             Optional<NetworkMap> optionalNetworkMap = SingleTransactionDataBroker.syncReadOptional(dataBroker,
 171                     LogicalDatastoreType.CONFIGURATION, networkMapIdentifier);
 172             if (optionalNetworkMap.isPresent()) {
 173                 NetworkMapBuilder nwMapBuilder = new NetworkMapBuilder(optionalNetworkMap.get());
 174                 List<Uuid> subnetIdList = nwMapBuilder.getSubnetIdList();
 175                 if (subnetIdList.remove(subnetId)) {
 176                     if (subnetIdList.isEmpty()) {
 177                         MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier);
 178                         LOG.debug("Deleted network node in NetworkMaps DS for subnet {} network {}",
 179                                 subnetId.getValue(), networkId.getValue());
 180                     } else {
 181                         nwMapBuilder.setSubnetIdList(subnetIdList);
 182                         MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier,
 183                                 nwMapBuilder.build());
 184                         LOG.debug("Deleted subnet-network mapping for subnet {} network {}", subnetId.getValue(),
 185                                 networkId.getValue());
 186                     }
 187                 } else {
 188                     LOG.error("Subnet {} is not mapped to network {}", subnetId.getValue(), networkId.getValue());
 189                 }
 190             } else {
 191                 LOG.error("network {} not present for subnet {} ", networkId, subnetId);
 192             }
 193         } catch (ReadFailedException | RuntimeException e) {
 194             LOG.error("Delete subnet-network mapping failed for subnet {} network {}", subnetId.getValue(),
 195                     networkId.getValue());
 196         }
 197     }
 198 }
 199