vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronSubnetChangeListener.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 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 org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMap;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMapBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMapKey;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 public class NeutronSubnetChangeListener extends AsyncDataTreeChangeListenerBase<Subnet, NeutronSubnetChangeListener>
  30         implements AutoCloseable {
  31     private static final Logger LOG = LoggerFactory.getLogger(NeutronSubnetChangeListener.class);
  32     private final DataBroker dataBroker;
  33     private final NeutronvpnManager nvpnManager;
  34
  35     public NeutronSubnetChangeListener(final DataBroker dataBroker, final NeutronvpnManager nVpnMgr) {
  36         super(Subnet.class, NeutronSubnetChangeListener.class);
  37         this.dataBroker = dataBroker;
  38         nvpnManager = nVpnMgr;
  39     }
  40
  41     public void start() {
  42         LOG.info("{} start", getClass().getSimpleName());
  43         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  44     }
  45
  46     @Override
  47     protected InstanceIdentifier<Subnet> getWildCardPath() {
  48         return InstanceIdentifier.create(Neutron.class).child(Subnets.class).child(Subnet.class);
  49     }
  50
  51     @Override
  52     protected NeutronSubnetChangeListener getDataTreeChangeListener() {
  53         return NeutronSubnetChangeListener.this;
  54     }
  55
  56
  57     @Override
  58     protected void add(InstanceIdentifier<Subnet> identifier, Subnet input) {
  59         LOG.trace("Adding Subnet : key: {}, value={}", identifier, input);
  60         Uuid networkId = input.getNetworkId();
  61         Network network = NeutronvpnUtils.getNeutronNetwork(dataBroker, networkId);
  62         if (network == null || !NeutronvpnUtils.isNetworkTypeSupported(network)) {
  63             //FIXME: This should be removed when support for VLAN and GRE network types is added
  64             LOG.error("neutron vpn doesn't support vlan/gre network provider type for the port {} which is part of network {}."
  65                     + " Skipping the processing of Subnet add DCN", input.getName(), network);
  66             return;
  67         }
  68         handleNeutronSubnetCreated(input.getUuid(), String.valueOf(input.getCidr().getValue()), networkId,
  69                 input.getTenantId());
  70         NeutronvpnUtils.addToSubnetCache(input);
  71     }
  72
  73     @Override
  74     protected void remove(InstanceIdentifier<Subnet> identifier, Subnet input) {
  75         LOG.trace("Removing subnet : key: {}, value={}", identifier, input);
  76         Uuid networkId = input.getNetworkId();
  77         Network network = NeutronvpnUtils.getNeutronNetwork(dataBroker, networkId);
  78         if (network == null || !NeutronvpnUtils.isNetworkTypeSupported(network)) {
  79             //FIXME: This should be removed when support for GRE network types is added
  80             LOG.error("neutron vpn doesn't support gre network provider type for the port {} which is part of network {}."
  81                     + " Skipping the processing of Subnet remove DCN", input.getName(), network);
  82             return;
  83         }
  84         handleNeutronSubnetDeleted(input.getUuid(), networkId, null);
  85         NeutronvpnUtils.removeFromSubnetCache(input);
  86     }
  87
  88     @Override
  89     protected void update(InstanceIdentifier<Subnet> identifier, Subnet original, Subnet update) {
  90         LOG.trace("Updating Subnet : key: {}, original value={}, update value={}", identifier, original, update);
  91         Uuid networkId = update.getNetworkId();
  92         Network network = NeutronvpnUtils.getNeutronNetwork(dataBroker, networkId);
  93         if (network == null || !NeutronvpnUtils.isNetworkTypeSupported(network)) {
  94             LOG.error("neutron vpn doesn't support vlan/gre network provider type for the port {} which is part of network {}."
  95                     + " Skipping the processing of Subnet update DCN", update.getName(), network);
  96             return;
  97         }
  98         handleNeutronSubnetUpdated(update.getUuid(), networkId, update.getTenantId());
  99         NeutronvpnUtils.addToSubnetCache(update);
 100     }
 101
 102     private void handleNeutronSubnetCreated(Uuid subnetId, String subnetIp, Uuid networkId, Uuid tenantId) {
 103         nvpnManager.updateSubnetNode(subnetId, subnetIp, tenantId, networkId, null/*routerID*/, null/*vpnID*/);
 104         if (networkId != null) {
 105             createSubnetToNetworkMapping(subnetId, networkId);
 106         }
 107     }
 108
 109     private void handleNeutronSubnetDeleted(Uuid subnetId, Uuid networkId, Uuid tenantId) {
 110         Uuid vpnId = NeutronvpnUtils.getVpnForNetwork(dataBroker, networkId);
 111         if (vpnId != null) {
 112             nvpnManager.removeSubnetFromVpn(vpnId, subnetId);
 113         }
 114         if (networkId != null)  {
 115             deleteSubnetToNetworkMapping(subnetId, networkId);
 116         }
 117         nvpnManager.deleteSubnetMapNode(subnetId);
 118     }
 119
 120     private void handleNeutronSubnetUpdated(Uuid subnetId, Uuid networkId, Uuid tenantId) {
 121         Uuid oldNetworkId = NeutronvpnUtils.getSubnetmap(dataBroker, subnetId).getNetworkId();
 122         if (oldNetworkId != null && !oldNetworkId.equals(networkId)) {
 123             deleteSubnetToNetworkMapping(subnetId, oldNetworkId);
 124         }
 125         if (networkId != null && !networkId.equals(oldNetworkId)) {
 126             createSubnetToNetworkMapping(subnetId, networkId);
 127         }
 128         nvpnManager.updateSubnetNode(subnetId, null, tenantId, networkId, null/*routerID*/, null/*vpnID*/);
 129     }
 130
 131     private void createSubnetToNetworkMapping(Uuid subnetId, Uuid networkId) {
 132         try {
 133             InstanceIdentifier networkMapIdentifier = NeutronvpnUtils.buildNetworkMapIdentifier(networkId);
 134             Optional<NetworkMap> optionalNetworkMap = NeutronvpnUtils.read(dataBroker, LogicalDatastoreType.CONFIGURATION,
 135                     networkMapIdentifier);
 136             NetworkMapBuilder nwMapBuilder = null;
 137             if (optionalNetworkMap.isPresent()) {
 138                 nwMapBuilder = new NetworkMapBuilder(optionalNetworkMap.get());
 139             } else {
 140                 nwMapBuilder = new NetworkMapBuilder().setKey(new NetworkMapKey(networkId)).setNetworkId(networkId);
 141                 LOG.debug("Adding a new network node in NetworkMaps DS for network {}", networkId.getValue());
 142             }
 143             List<Uuid> subnetIdList = nwMapBuilder.getSubnetIdList();
 144             if (subnetIdList == null) {
 145                 subnetIdList = new ArrayList<>();
 146             }
 147             subnetIdList.add(subnetId);
 148             nwMapBuilder.setSubnetIdList(subnetIdList);
 149             MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier, nwMapBuilder.build());
 150             LOG.debug("Created subnet-network mapping for subnet {} network {}", subnetId.getValue(),
 151                     networkId.getValue());
 152         } catch (Exception e) {
 153             LOG.error("Create subnet-network mapping failed for subnet {} network {}", subnetId.getValue(),
 154                     networkId.getValue());
 155         }
 156     }
 157
 158     private void deleteSubnetToNetworkMapping(Uuid subnetId, Uuid networkId) {
 159         try {
 160             InstanceIdentifier networkMapIdentifier = NeutronvpnUtils.buildNetworkMapIdentifier(networkId);
 161             Optional<NetworkMap> optionalNetworkMap = NeutronvpnUtils.read(dataBroker, LogicalDatastoreType.CONFIGURATION,
 162                     networkMapIdentifier);
 163             if (optionalNetworkMap.isPresent()) {
 164                 NetworkMapBuilder nwMapBuilder = new NetworkMapBuilder(optionalNetworkMap.get());
 165                 List<Uuid> subnetIdList = nwMapBuilder.getSubnetIdList();
 166                 if (subnetIdList.remove(subnetId)) {
 167                     if (subnetIdList.size() == 0) {
 168                         MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier);
 169                         LOG.debug("Deleted network node in NetworkMaps DS for network {}", subnetId.getValue(),
 170                                 networkId.getValue());
 171                     } else {
 172                         nwMapBuilder.setSubnetIdList(subnetIdList);
 173                         MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier,
 174                                 nwMapBuilder.build());
 175                         LOG.debug("Deleted subnet-network mapping for subnet {} network {}", subnetId.getValue(),
 176                                 networkId.getValue());
 177                     }
 178                 } else {
 179                     LOG.error("Subnet {} is not mapped to network {}", subnetId.getValue(), networkId.getValue());
 180                 }
 181             } else {
 182                 LOG.error("network {} not present for subnet {} ", networkId, subnetId);
 183             }
 184         } catch (Exception e) {
 185             LOG.error("Delete subnet-network mapping failed for subnet {} network {}", subnetId.getValue(),
 186                     networkId.getValue());
 187         }
 188     }
 189 }
 190