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
  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.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMap;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMapBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMapKey;
  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 import java.util.ArrayList;
  32 import java.util.List;
  33
  34
  35 public class NeutronSubnetChangeListener extends AbstractDataChangeListener<Subnet> implements AutoCloseable {
  36     private static final Logger LOG = LoggerFactory.getLogger(NeutronSubnetChangeListener.class);
  37
  38     private ListenerRegistration<DataChangeListener> listenerRegistration;
  39     private final DataBroker broker;
  40     private NeutronvpnManager nvpnManager;
  41
  42
  43     public NeutronSubnetChangeListener(final DataBroker db, NeutronvpnManager nVpnMgr) {
  44         super(Subnet.class);
  45         broker = db;
  46         nvpnManager = nVpnMgr;
  47         registerListener(db);
  48     }
  49
  50     @Override
  51     public void close() throws Exception {
  52         if (listenerRegistration != null) {
  53             try {
  54                 listenerRegistration.close();
  55             } catch (final Exception e) {
  56                 LOG.error("Error when cleaning up DataChangeListener.", e);
  57             }
  58             listenerRegistration = null;
  59         }
  60         LOG.info("N_Subnet listener Closed");
  61     }
  62
  63
  64     private void registerListener(final DataBroker db) {
  65         try {
  66             listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  67                     InstanceIdentifier.create(Neutron.class).child(Subnets.class).child(Subnet.class),
  68                     NeutronSubnetChangeListener.this, DataChangeScope.SUBTREE);
  69         } catch (final Exception e) {
  70             LOG.error("Neutron Manager Subnet DataChange listener registration fail!", e);
  71             throw new IllegalStateException("Neutron Manager Subnet DataChange listener registration failed.", e);
  72         }
  73     }
  74
  75     @Override
  76     protected void add(InstanceIdentifier<Subnet> identifier, Subnet input) {
  77         if (LOG.isTraceEnabled()) {
  78             LOG.trace("Adding Subnet : key: " + identifier + ", value=" + input);
  79         }
  80         Uuid networkId = input.getNetworkId();
  81         Network network = NeutronvpnUtils.getNeutronNetwork(broker, networkId);
  82         if (network == null || NeutronvpnUtils.isNetworkTypeVlanOrGre(network)) {
  83             //FIXME: This should be removed when support for VLAN and GRE network types is added
  84             LOG.error("neutron vpn doesn't support vlan/gre network provider type for the port {} which is part of network {}.",
  85                     input.getName(), network);
  86             return;
  87         }
  88         handleNeutronSubnetCreated(input.getUuid(), String.valueOf(input.getCidr().getValue()), input.getNetworkId(), input.getTenantId());
  89         NeutronvpnUtils.addToSubnetCache(input);
  90     }
  91
  92     @Override
  93     protected void remove(InstanceIdentifier<Subnet> identifier, Subnet input) {
  94         if (LOG.isTraceEnabled()) {
  95             LOG.trace("Removing subnet : key: " + identifier + ", value=" + input);
  96         }
  97         Uuid networkId = input.getNetworkId();
  98         Network network = NeutronvpnUtils.getNeutronNetwork(broker, networkId);
  99         if (network == null || NeutronvpnUtils.isNetworkTypeVlanOrGre(network)) {
 100             //FIXME: This should be removed when support for VLAN and GRE network types is added
 101             LOG.error("neutron vpn doesn't support vlan/gre network provider type for the port {} which is part of network {}.",
 102                     input.getName(), network);
 103             return;
 104         }
 105         handleNeutronSubnetDeleted(input.getUuid(), networkId, null);
 106         NeutronvpnUtils.removeFromSubnetCache(input);
 107     }
 108
 109     @Override
 110     protected void update(InstanceIdentifier<Subnet> identifier, Subnet original, Subnet update) {
 111         if (LOG.isTraceEnabled()) {
 112             LOG.trace("Updating Subnet : key: " + identifier + ", original value=" + original + ", update value=" +
 113                     update);
 114         }
 115         Uuid networkId = update.getNetworkId();
 116         Network network = NeutronvpnUtils.getNeutronNetwork(broker, networkId);
 117         if (network == null || NeutronvpnUtils.isNetworkTypeVlanOrGre(network)) {
 118             LOG.error("neutron vpn doesn't support vlan/gre network provider type for the port {} which is part of network {}."
 119                     + " Skipping the processing of Subnet update DCN", update.getName(), network);
 120             return;
 121         }
 122         handleNeutronSubnetUpdated(update.getUuid(), networkId, update.getTenantId());
 123         NeutronvpnUtils.addToSubnetCache(update);
 124     }
 125
 126     private void handleNeutronSubnetCreated(Uuid subnetId, String subnetIp, Uuid networkId, Uuid tenantId) {
 127         nvpnManager.updateSubnetNode(subnetId, subnetIp, tenantId, networkId, null, null, null);
 128         if (networkId != null) {
 129             createSubnetToNetworkMapping(subnetId, networkId);
 130         }
 131     }
 132
 133     private void handleNeutronSubnetDeleted(Uuid subnetId, Uuid networkId, Uuid tenantId) {
 134         Uuid vpnId = NeutronvpnUtils.getVpnForNetwork(broker, networkId);
 135         if (vpnId != null) {
 136             nvpnManager.removeSubnetFromVpn(vpnId, subnetId);
 137         }
 138         if (networkId != null)  {
 139             deleteSubnetToNetworkMapping(subnetId, networkId);
 140         }
 141         nvpnManager.deleteSubnetMapNode(subnetId);
 142     }
 143
 144     private void handleNeutronSubnetUpdated(Uuid subnetId, Uuid networkId, Uuid tenantId) {
 145         Uuid oldNetworkId = NeutronvpnUtils.getSubnetmap(broker, subnetId).getNetworkId();
 146         if (oldNetworkId != null && !oldNetworkId.equals(networkId)) {
 147             deleteSubnetToNetworkMapping(subnetId, oldNetworkId);
 148         }
 149         if (networkId != null && !networkId.equals(oldNetworkId)) {
 150             createSubnetToNetworkMapping(subnetId, networkId);
 151         }
 152         nvpnManager.updateSubnetNode(subnetId, null, tenantId, networkId, null, null, null);
 153     }
 154
 155     private void createSubnetToNetworkMapping(Uuid subnetId, Uuid networkId) {
 156         try {
 157             InstanceIdentifier networkMapIdentifier = NeutronvpnUtils.buildNetworkMapIdentifier(networkId);
 158             Optional<NetworkMap> optionalNetworkMap = NeutronvpnUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
 159                     networkMapIdentifier);
 160             NetworkMapBuilder nwMapBuilder = null;
 161             if (optionalNetworkMap.isPresent()) {
 162                 nwMapBuilder = new NetworkMapBuilder(optionalNetworkMap.get());
 163             } else {
 164                 nwMapBuilder = new NetworkMapBuilder().setKey(new NetworkMapKey(networkId)).setNetworkId(networkId);
 165                 LOG.debug("Adding a new network node in NetworkMaps DS for network {}", networkId.getValue());
 166             }
 167             List<Uuid> subnetIdList = nwMapBuilder.getSubnetIdList();
 168             if (subnetIdList == null) {
 169                 subnetIdList = new ArrayList<>();
 170             }
 171             subnetIdList.add(subnetId);
 172             nwMapBuilder.setSubnetIdList(subnetIdList);
 173             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier, nwMapBuilder.build());
 174             LOG.debug("Created subnet-network mapping for subnet {} network {}", subnetId.getValue(),
 175                     networkId.getValue());
 176         } catch (Exception e) {
 177             LOG.error("Create subnet-network mapping failed for subnet {} network {}", subnetId.getValue(),
 178                     networkId.getValue());
 179         }
 180     }
 181
 182     private void deleteSubnetToNetworkMapping(Uuid subnetId, Uuid networkId) {
 183         try {
 184             InstanceIdentifier networkMapIdentifier = NeutronvpnUtils.buildNetworkMapIdentifier(networkId);
 185             Optional<NetworkMap> optionalNetworkMap = NeutronvpnUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
 186                     networkMapIdentifier);
 187             if (optionalNetworkMap.isPresent()) {
 188                 NetworkMapBuilder nwMapBuilder = new NetworkMapBuilder(optionalNetworkMap.get());
 189                 List<Uuid> subnetIdList = nwMapBuilder.getSubnetIdList();
 190                 if (subnetIdList.remove(subnetId)) {
 191                     if (subnetIdList.size() == 0) {
 192                         MDSALUtil.syncDelete(broker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier);
 193                         LOG.debug("Deleted network node in NetworkMaps DS for network {}", subnetId.getValue(),
 194                                 networkId.getValue());
 195                     } else {
 196                         nwMapBuilder.setSubnetIdList(subnetIdList);
 197                         MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION, networkMapIdentifier,
 198                                 nwMapBuilder.build());
 199                         LOG.debug("Deleted subnet-network mapping for subnet {} network {}", subnetId.getValue(),
 200                                 networkId.getValue());
 201                     }
 202                 } else {
 203                     LOG.error("Subnet {} is not mapped to network {}", subnetId.getValue(), networkId.getValue());
 204                 }
 205             } else {
 206                 LOG.error("network {} not present for subnet {} ", networkId, subnetId);
 207             }
 208         } catch (Exception e) {
 209             LOG.error("Delete subnet-network mapping failed for subnet {} network {}", subnetId.getValue(),
 210                     networkId.getValue());
 211         }
 212     }
 213 }