renderers/vpp/src/main/java/org/opendaylight/groupbasedpolicy/renderer/vpp/policy/ForwardingManager.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. 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.groupbasedpolicy.renderer.vpp.policy;
  10
  11 import java.util.ArrayList;
  12 import java.util.HashMap;
  13 import java.util.List;
  14 import java.util.Map;
  15 import java.util.Set;
  16 import java.util.concurrent.ExecutionException;
  17 import java.util.concurrent.TimeUnit;
  18 import java.util.concurrent.TimeoutException;
  19
  20 import javax.annotation.Nonnull;
  21 import javax.annotation.Nullable;
  22
  23 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  24 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  25 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  26 import org.opendaylight.groupbasedpolicy.renderer.vpp.api.BridgeDomainManager;
  27 import org.opendaylight.groupbasedpolicy.renderer.vpp.commands.RoutingCommand;
  28 import org.opendaylight.groupbasedpolicy.renderer.vpp.config.ConfigUtil;
  29 import org.opendaylight.groupbasedpolicy.renderer.vpp.dhcp.DhcpRelayHandler;
  30 import org.opendaylight.groupbasedpolicy.renderer.vpp.iface.InterfaceManager;
  31 import org.opendaylight.groupbasedpolicy.renderer.vpp.lisp.LispStateManager;
  32 import org.opendaylight.groupbasedpolicy.renderer.vpp.lisp.loopback.LoopbackManager;
  33 import org.opendaylight.groupbasedpolicy.renderer.vpp.lisp.flat.overlay.FlatOverlayManager;
  34 import org.opendaylight.groupbasedpolicy.renderer.vpp.lisp.mappers.NeutronTenantToVniMapper;
  35 import org.opendaylight.groupbasedpolicy.renderer.vpp.nat.NatManager;
  36 import org.opendaylight.groupbasedpolicy.renderer.vpp.nat.NatUtil;
  37 import org.opendaylight.groupbasedpolicy.renderer.vpp.policy.acl.AclManager;
  38 import org.opendaylight.groupbasedpolicy.renderer.vpp.routing.RoutingManager;
  39 import org.opendaylight.groupbasedpolicy.renderer.vpp.util.General;
  40 import org.opendaylight.groupbasedpolicy.renderer.vpp.util.KeyFactory;
  41 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
  42 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
  43 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.nat.instances.nat.instance.mapping.table.MappingEntryBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.common.endpoint.fields.NetworkContainment;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.common.endpoint.fields.network.containment.Containment;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.common.endpoint.fields.network.containment.containment.ForwardingContextContainment;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.common.endpoint.fields.network.containment.containment.NetworkDomainContainment;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.has.absolute.location.absolute.location.LocationType;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.has.absolute.location.absolute.location.location.type.ExternalLocationCase;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.ParentEndpointChoice;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.parent.endpoint.choice.ParentEndpointCase;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.parent.endpoint.choice.parent.endpoint._case.ParentEndpoint;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ContextId;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.NetworkDomainId;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.IpPrefixType;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.L2FloodDomain;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.MacAddressType;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.SubnetAugmentRenderer;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.rev160427.NetworkDomain;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.rev160427.forwarding.fields.Parent;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.NatAddressRenderer;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.Configuration;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.Endpoints;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.RendererForwarding;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.endpoints.AddressEndpointWithLocation;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.RendererEndpointKey;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.RendererForwardingByTenant;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContext;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContextKey;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomain;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomainKey;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.Config;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.VlanNetwork;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes.InterfaceTypeChoice;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.LoopbackCase;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.GbpBridgeDomain;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.GbpBridgeDomainKey;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpoint;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpointKey;
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.renderers.renderer.renderer.nodes.renderer.node.PhysicalInterface;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2.types.rev130827.VlanId;
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev170607.VxlanVni;
  84 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  85 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  86 import org.slf4j.Logger;
  87 import org.slf4j.LoggerFactory;
  88
  89 import com.google.common.annotations.VisibleForTesting;
  90 import com.google.common.base.Optional;
  91 import com.google.common.base.Preconditions;
  92 import com.google.common.base.Strings;
  93 import com.google.common.collect.SetMultimap;
  94 import com.google.common.collect.Table;
  95
  96 public final class ForwardingManager {
  97
  98     private static final Logger LOG = LoggerFactory.getLogger(ForwardingManager.class);
  99     @VisibleForTesting
 100     private byte WAIT_FOR_BD_PROCESSING = 60; // seconds
 101     private long lastVxlanVni = 1L;
 102     private final Map<String, VxlanVni> vxlanVniByBridgeDomain = new HashMap<>();
 103     private final InterfaceManager ifaceManager;
 104     private final AclManager aclManager;
 105     private final BridgeDomainManager bdManager;
 106     private final NatManager natManager;
 107     private final RoutingManager routingManager;
 108     private final LispStateManager lispStateManager;
 109     private final LoopbackManager loopbackManager;
 110     private final FlatOverlayManager flatOverlayManager;
 111     private final DhcpRelayHandler dhcpRelayHandler;
 112     private final DataBroker dataBroker;
 113
 114     public ForwardingManager(@Nonnull InterfaceManager ifaceManager, @Nonnull AclManager aclManager,
 115                              @Nonnull NatManager natManager, @Nonnull RoutingManager routingManager, @Nonnull BridgeDomainManager bdManager,
 116                              @Nonnull LispStateManager lispStateManager, @Nonnull LoopbackManager loopbackManager, @Nonnull FlatOverlayManager flatOverlayManager,
 117                              @Nonnull DhcpRelayHandler dhcpRelayHandler, @Nonnull DataBroker dataBroker) {
 118         this.ifaceManager = Preconditions.checkNotNull(ifaceManager);
 119         this.bdManager = Preconditions.checkNotNull(bdManager);
 120         this.natManager = Preconditions.checkNotNull(natManager);
 121         this.routingManager = Preconditions.checkNotNull(routingManager);
 122         this.lispStateManager = Preconditions.checkNotNull(lispStateManager);
 123         this.loopbackManager = Preconditions.checkNotNull(loopbackManager);
 124         this.flatOverlayManager = Preconditions.checkNotNull(flatOverlayManager);
 125         this.dataBroker = Preconditions.checkNotNull(dataBroker);
 126         this.aclManager = Preconditions.checkNotNull(aclManager);
 127         this.dhcpRelayHandler = Preconditions.checkNotNull(dhcpRelayHandler);
 128     }
 129
 130     public Optional<GbpBridgeDomain> readGbpBridgeDomainConfig(String name) {
 131         InstanceIdentifier<GbpBridgeDomain> bdIid = InstanceIdentifier.builder(Config.class)
 132             .child(GbpBridgeDomain.class, new GbpBridgeDomainKey(name))
 133             .build();
 134         ReadOnlyTransaction rTx = dataBroker.newReadOnlyTransaction();
 135         Optional<GbpBridgeDomain> optBd = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION, bdIid, rTx);
 136         rTx.close();
 137         return optBd;
 138     }
 139
 140     public void createBridgeDomainOnNodes(SetMultimap<String, NodeId> vppNodesByBridgeDomain) {
 141         for (String bd : vppNodesByBridgeDomain.keySet()) {
 142             Optional<GbpBridgeDomain> bdConfig = readGbpBridgeDomainConfig(bd);
 143             Set<NodeId> vppNodes = vppNodesByBridgeDomain.get(bd);
 144             if (bdConfig.isPresent()) {
 145                 if (bdConfig.get().getType().equals(VlanNetwork.class)) {
 146                     createVlanBridgeDomains(bd, bdConfig.get().getVlan(), vppNodes);
 147                 }
 148             } else {
 149                 VxlanVni vxlanVni = vxlanVniByBridgeDomain.get(bd);
 150                 if (vxlanVni == null) {
 151                     vxlanVni = new VxlanVni(lastVxlanVni++);
 152                     vxlanVniByBridgeDomain.put(bd, vxlanVni);
 153                 }
 154                 createVxlanBridgeDomains(bd, vxlanVni, vppNodes);
 155             }
 156         }
 157     }
 158
 159     private void createVxlanBridgeDomains(final String bd, final VxlanVni vni, final Set<NodeId> vppNodes) {
 160         for (NodeId vppNode : vppNodes) {
 161             try {
 162                 LOG.debug("Creating VXLAN bridge-domain {} on node {} with VNI {}", bd, vppNode.getValue(),
 163                         vni);
 164                 bdManager.createVxlanBridgeDomainOnVppNode(bd, vni, vppNode).get(WAIT_FOR_BD_PROCESSING,
 165                         TimeUnit.SECONDS);
 166             } catch (InterruptedException | ExecutionException e) {
 167                 LOG.warn("VXLAN Bridge domain {} was not created on node {}", bd, vppNode.getValue(), e);
 168             } catch (TimeoutException e) {
 169                 LOG.warn("Probably, VXLAN Bridge domain {} was not created on node {} because BridgeDomainManager "
 170                         + "did not respond by {} seconds. Check VBD log for more details",
 171                         bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 172             }
 173         }
 174     }
 175
 176     private void createVlanBridgeDomains(final String bd, final VlanId vlanId, final Set<NodeId> vppNodes) {
 177         for (NodeId vppNode : vppNodes) {
 178             try {
 179                 LOG.debug("Creating VLAN bridge-domain {} on node {} with VLAN ID {}", bd, vppNode.getValue(),
 180                         vlanId.getValue());
 181                 bdManager.createVlanBridgeDomainOnVppNode(bd, vlanId, vppNode).get(WAIT_FOR_BD_PROCESSING,
 182                         TimeUnit.SECONDS);
 183             } catch (InterruptedException | ExecutionException e) {
 184                 LOG.warn("VLAN Bridge domain {} was not created on node {}", bd, vppNode.getValue(), e);
 185             } catch (TimeoutException e) {
 186                 LOG.warn("Probably, VLAN Bridge domain {} was not created on node {} because BridgeDomainManager "
 187                         + "did not respond by {} seconds. Check VBD log for more details",
 188                         bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 189             }
 190         }
 191     }
 192
 193     public void removeBridgeDomainOnNodes(final SetMultimap<String, NodeId> vppNodesByBridgeDomain) {
 194         for (String bd : vppNodesByBridgeDomain.keySet()) {
 195             Set<NodeId> vppNodes = vppNodesByBridgeDomain.get(bd);
 196             for (NodeId vppNode : vppNodes) {
 197                 try {
 198                     bdManager.removeBridgeDomainFromVppNode(bd, vppNode).get(WAIT_FOR_BD_PROCESSING,
 199                             TimeUnit.SECONDS);
 200                 } catch (InterruptedException | ExecutionException e) {
 201                     LOG.warn("Bridge domain {} was not removed from node {}", bd, vppNode.getValue(), e);
 202                 } catch (TimeoutException e) {
 203                     LOG.warn("Probably, bridge domain {} was not removed from node {} because BridgeDomainManager "
 204                             + "did not respond by {} seconds. Check VBD log for more details",
 205                             bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 206                 }
 207             }
 208         }
 209     }
 210
 211     public void createForwardingForEndpoint(RendererEndpointKey rEpKey, PolicyContext policyCtx) {
 212         AddressEndpointWithLocation rEp = policyCtx.getAddrEpByKey().get(KeyFactory.addressEndpointKey(rEpKey));
 213
 214         ExternalLocationCase rEpLoc = resolveAndValidateLocation(rEp);
 215         if (Strings.isNullOrEmpty(rEpLoc.getExternalNodeConnector())) {
 216             // TODO add it to the status for renderer manager
 217             LOG.info("Renderer endpoint does not have external-node-connector therefore it is ignored {}", rEp);
 218             return;
 219         }
 220         if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 221             lispStateManager.configureEndPoint(rEp);
 222             if (ConfigUtil.getInstance().isL3FlatEnabled()) {
 223                 flatOverlayManager.configureEndpointForFlatOverlay(rEp);
 224                 loopbackManager.createSimpleLoopbackIfNeeded(rEp);
 225             }
 226         }
 227         if (Strings.isNullOrEmpty(rEpLoc.getExternalNode())) {
 228             java.util.Optional<String> optL2FloodDomain = resolveL2FloodDomain(rEp, policyCtx);
 229             if (!optL2FloodDomain.isPresent()) {
 230                 // TODO add it to the status for renderer manager
 231                 LOG.info("Renderer endpoint does not have l2FloodDomain as network containment {}", rEp);
 232                 return;
 233             }
 234             if (!ConfigUtil.getInstance().isL3FlatEnabled()) {
 235                 String l2FloodDomain = optL2FloodDomain.get();
 236                 try {
 237                     ifaceManager.addBridgeDomainToInterface(l2FloodDomain, rEp, aclManager.resolveAclsOnInterface(
 238                             rEpKey, policyCtx), isBviForEndpoint(rEp)).get();
 239                     LOG.debug("Interface added to bridge-domain {} for endpoint {}", l2FloodDomain, rEp);
 240
 241                     if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 242                         loopbackManager.createBviLoopbackIfNeeded(rEp, l2FloodDomain);
 243                     }
 244
 245                 } catch (InterruptedException | ExecutionException e) {
 246                     // TODO add it to the status for renderer manager
 247                     LOG.warn("Interface was not added to bridge-domain {} for endpoint {}", l2FloodDomain, rEp, e);
 248                 }
 249             }
 250             aclManager.updateAclsForPeers(policyCtx, rEpKey);
 251         } else {
 252             LOG.debug("Forwarding is not created - Location of renderer endpoint contains "
 253                     + "external-node therefore VPP renderer assumes that interface for endpoint is "
 254                     + "already assigned in bridge-domain representing external-node. {}", rEp);
 255         }
 256     }
 257
 258     private boolean isBviForEndpoint(AddressEndpointWithLocation rEp) {
 259         VppEndpointKey vppEndpointKey =
 260             new VppEndpointKey(rEp.getAddress(), rEp.getAddressType(), rEp.getContextId(), rEp.getContextType());
 261         ReadOnlyTransaction rTx = dataBroker.newReadOnlyTransaction();
 262         Optional<VppEndpoint> vppEndpointOptional =
 263             DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,
 264                 InstanceIdentifier.builder(Config.class).child(VppEndpoint.class, vppEndpointKey).build(), rTx);
 265         if (vppEndpointOptional.isPresent()) {
 266             InterfaceTypeChoice interfaceTypeChoice = vppEndpointOptional.get().getInterfaceTypeChoice();
 267             if (interfaceTypeChoice instanceof LoopbackCase) {
 268                 LOG.trace("Vpp renderer endpoint {} IS a BVI interface.", rEp.getKey());
 269                 return ((LoopbackCase) interfaceTypeChoice).isBvi();
 270             }
 271         }
 272         rTx.close();
 273         LOG.trace("Vpp renderer endpoint {} IS NOT a BVI interface.", rEp.getKey());
 274         return false;
 275     }
 276
 277     public void removeForwardingForEndpoint(RendererEndpointKey rEpKey, PolicyContext policyCtx) {
 278         AddressEndpointWithLocation rEp = policyCtx.getAddrEpByKey().get(KeyFactory.addressEndpointKey(rEpKey));
 279         ExternalLocationCase rEpLoc = resolveAndValidateLocation(rEp);
 280         if (rEpLoc == null || Strings.isNullOrEmpty(rEpLoc.getExternalNodeConnector())) {
 281             // nothing was created for endpoint therefore nothing is removed
 282             return;
 283         }
 284         if (!Strings.isNullOrEmpty(rEpLoc.getExternalNode())) {
 285             try {
 286                 if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 287                     lispStateManager.deleteLispConfigurationForEndpoint(rEp);
 288                     loopbackManager.handleEndpointDelete(rEp);
 289
 290                     if (ConfigUtil.getInstance().isL3FlatEnabled()) {
 291                         flatOverlayManager.handleEndpointDeleteForFlatOverlay(rEp);
 292                     }
 293
 294                 }
 295                 ifaceManager.deleteBridgeDomainFromInterface(rEp).get();
 296                 LOG.debug("bridge-domain was deleted from interface for endpoint {}", rEp);
 297             } catch (InterruptedException | ExecutionException e) {
 298                 // TODO add it to the status for renderer manager
 299                 LOG.warn("bridge-domain was not deleted from interface for endpoint {}", rEp, e);
 300             }
 301         } else {
 302             LOG.debug("Forwarding is not removed - Location of renderer endpoint does not contain "
 303                     + "external-node therefore VPP renderer assumes that interface for endpoint is not "
 304                     + "assigned to bridge-domain representing external-node. {}", rEp);
 305         }
 306     }
 307
 308     public static ExternalLocationCase resolveAndValidateLocation(AddressEndpointWithLocation addrEpWithLoc) {
 309         if (addrEpWithLoc.getAbsoluteLocation() != null
 310                 && addrEpWithLoc.getAbsoluteLocation().getLocationType() != null) {
 311             LocationType locationType = addrEpWithLoc.getAbsoluteLocation().getLocationType();
 312             if (!(locationType instanceof ExternalLocationCase)) {
 313                 throw new IllegalStateException("Endpoint does not have external location " + addrEpWithLoc);
 314             }
 315             ExternalLocationCase result = (ExternalLocationCase) locationType;
 316             if (result.getExternalNodeMountPoint() == null) {
 317                 throw new IllegalStateException("Endpoint does not have external-node-mount-point " + addrEpWithLoc);
 318             }
 319             return result;
 320         }
 321         return null;
 322     }
 323
 324     public static java.util.Optional<String> resolveL2FloodDomain(@Nonnull AddressEndpointWithLocation ep,
 325             @Nonnull PolicyContext policyCtx) {
 326         NetworkContainment netCont = ep.getNetworkContainment();
 327         if (netCont == null) {
 328             return java.util.Optional.empty();
 329         }
 330         Containment containment = netCont.getContainment();
 331         if (containment instanceof ForwardingContextContainment) {
 332             ForwardingContextContainment fwCtxCont = (ForwardingContextContainment) containment;
 333             if (L2FloodDomain.class.equals(fwCtxCont.getContextType())) {
 334                 return fwCtxCont.getContextId() == null ? java.util.Optional.empty() : java.util.Optional
 335                     .of(fwCtxCont.getContextId().getValue());
 336             }
 337         }
 338         if (containment instanceof NetworkDomainContainment) {
 339             final NetworkDomainContainment netDomainCont = (NetworkDomainContainment) containment;
 340             final TenantId tenantId = ep.getTenant();
 341             final NetworkDomainId domainId = netDomainCont.getNetworkDomainId();
 342             final Class<? extends NetworkDomain> domainKey = netDomainCont.getNetworkDomainType();
 343             final RendererNetworkDomainKey rendererNetworkDomainKey = new RendererNetworkDomainKey(domainId, domainKey);
 344             final RendererNetworkDomain rendererNetworkDomain =
 345                     policyCtx.getNetworkDomainTable().get(tenantId, rendererNetworkDomainKey);
 346             if (rendererNetworkDomain == null) {
 347                 LOG.debug("Network domain not found. Containment: {}", containment);
 348                 return java.util.Optional.empty();
 349             }
 350             java.util.Optional<String> optL2Fd = getForwardingCtxForParent(ep.getTenant(),
 351                     rendererNetworkDomain.getParent(), policyCtx.getForwardingCtxTable())
 352                         .filter(fwdCtx -> L2FloodDomain.class.equals(fwdCtx.getContextType()))
 353                         .map(RendererForwardingContext::getContextId)
 354                         .map(ContextId::getValue);
 355             if (!optL2Fd.isPresent()) {
 356                 LOG.debug("network-domain-containment in endpoint does not have L2-flood-domain as parent. "
 357                         + "This case is not supported in VPP renderer. {}", ep);
 358             }
 359             return optL2Fd;
 360         }
 361         return java.util.Optional.empty();
 362     }
 363
 364     private static @Nonnull java.util.Optional<RendererForwardingContext> getForwardingCtxForParent(
 365             @Nullable TenantId tenant, @Nullable Parent parent,
 366             Table<TenantId, RendererForwardingContextKey, RendererForwardingContext> forwardingCtxTable) {
 367         if (tenant == null || parent == null) {
 368             return java.util.Optional.empty();
 369         }
 370         if (parent.getContextId() != null && parent.getContextType() != null) {
 371             return java.util.Optional.ofNullable(forwardingCtxTable.get(tenant,
 372                     new RendererForwardingContextKey(parent.getContextId(), parent.getContextType())));
 373         }
 374         return java.util.Optional.empty();
 375     }
 376
 377     void syncNatEntries(PolicyContext policyCtx) {
 378         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 379         if(cfg != null) {
 380             final List<MappingEntryBuilder> sNatEntries = resolveStaticNatTableEntries(cfg.getEndpoints());
 381             LOG.trace("Syncing static NAT entries {}", sNatEntries);
 382             if (cfg.getRendererForwarding() != null) {
 383                 for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 384                     List<InstanceIdentifier<PhysicalInterface>> physIfacesIid =
 385                         resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 386                     natManager.submitNatChanges(physIfacesIid, sNatEntries, policyCtx, true);
 387                 }
 388             }
 389         }
 390     }
 391
 392     public void deleteNatEntries(PolicyContext policyCtx) {
 393         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 394         if(cfg != null) {
 395             List<MappingEntryBuilder> natEntries = resolveStaticNatTableEntries(cfg.getEndpoints());
 396             if (natEntries.isEmpty()) {
 397                 LOG.trace("NAT entries are empty,nothing to delete, skipping processing.");
 398                 return;
 399             }
 400             LOG.trace("Deleting NAT entries {}", natEntries);
 401             if (cfg.getRendererForwarding() != null) {
 402                 for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 403                     List<InstanceIdentifier<PhysicalInterface>> physIfacesIid =
 404                         resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 405                     natManager.submitNatChanges(physIfacesIid, natEntries, policyCtx, false);
 406                 }
 407             }
 408         }
 409     }
 410
 411     public List<InstanceIdentifier<PhysicalInterface>> resolvePhysicalInterfacesForNat(
 412             List<RendererNetworkDomain> rendNetDomains) {
 413         List<InstanceIdentifier<PhysicalInterface>> physIfaces = new ArrayList<>();
 414         for (RendererNetworkDomain rendDomain : rendNetDomains) {
 415             Optional<IpPrefix> resolvedIpPrefix = resolveIpPrefix(rendDomain);
 416             if (resolvedIpPrefix.isPresent()) {
 417                 Optional<InstanceIdentifier<PhysicalInterface>> resPhIface =
 418                     NatUtil.resolvePhysicalInterface(resolvedIpPrefix.get(), dataBroker.newReadOnlyTransaction());
 419                 if (resPhIface.isPresent()) {
 420                     physIfaces.add(resPhIface.get());
 421                 }
 422             }
 423         }
 424         return physIfaces;
 425     }
 426
 427     private Optional<IpPrefix> resolveIpPrefix(RendererNetworkDomain rendDomain) {
 428         SubnetAugmentRenderer subnetAug = rendDomain.getAugmentation(SubnetAugmentRenderer.class);
 429         if (subnetAug.getSubnet() != null) {
 430             return Optional.of(subnetAug.getSubnet().getIpPrefix());
 431         }
 432         return Optional.absent();
 433     }
 434
 435     private List<MappingEntryBuilder> resolveStaticNatTableEntries(Endpoints endpoints) {
 436         List<MappingEntryBuilder> sNatEntries = new ArrayList<>();
 437         for (AddressEndpointWithLocation addrEp : endpoints.getAddressEndpointWithLocation()) {
 438             if (addrEp.getAugmentation(NatAddressRenderer.class) == null) {
 439                 continue;
 440             }
 441             String endpointIP = resolveEpIpAddressForSnat(addrEp);
 442
 443             if (endpointIP == null) {
 444                 LOG.warn("Endpoints {} IP cannot be null, skipping processing of SNAT", addrEp);
 445                 continue;
 446             }
 447
 448             NatAddressRenderer natAddr = addrEp.getAugmentation(NatAddressRenderer.class);
 449             if (natAddr.getNatAddress() == null && natAddr.getNatAddress().getIpv4Address() == null) {
 450                 LOG.warn("Only Ipv4 SNAT is currently supported. Cannot apply SNAT for [{},{}]", endpointIP,
 451                         natAddr.getNatAddress());
 452                 continue;
 453             }
 454             Optional<MappingEntryBuilder> entry = natManager.resolveSnatEntry(endpointIP, natAddr.getNatAddress()
 455                 .getIpv4Address());
 456             if (entry.isPresent()) {
 457                 sNatEntries.add(entry.get());
 458             }
 459         }
 460         return sNatEntries;
 461     }
 462
 463     private String resolveEpIpAddressForSnat(AddressEndpointWithLocation addrEp) {
 464         if (addrEp.getAddressType().equals(MacAddressType.class)) {
 465             ParentEndpointChoice parentEndpointChoice = addrEp.getParentEndpointChoice();
 466             if (parentEndpointChoice instanceof ParentEndpointCase
 467                 && !((ParentEndpointCase) parentEndpointChoice).getParentEndpoint().isEmpty()) {
 468                 ParentEndpoint parentEndpoint = ((ParentEndpointCase) parentEndpointChoice).getParentEndpoint().get(0);
 469                 if (parentEndpoint.getAddressType().equals(IpPrefixType.class)) {
 470                     String[] ipWithPrefix = parentEndpoint.getAddress().split("/");
 471                     return ipWithPrefix[0];
 472                 } else {
 473                     LOG.warn("Endpoint {} Does not have a Parent Ep with IP for SNAT. skipping processing of SNAT",
 474                         addrEp);
 475                     return null;
 476                 }
 477
 478             } else {
 479                 LOG.warn("Endpoint {} Does not contain IP address for SNAT. skipping processing of SNAT", addrEp);
 480                 return null;
 481             }
 482         } else if (addrEp.getAddressType().equals(IpPrefixType.class)) {
 483             return addrEp.getAddress();
 484         }
 485         return null;
 486     }
 487
 488     @VisibleForTesting
 489     void setTimer(byte time) {
 490         WAIT_FOR_BD_PROCESSING = time;
 491     }
 492
 493     public void syncRouting(PolicyContext policyCtx) {
 494         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 495         if (cfg != null && cfg.getRendererForwarding() != null) {
 496             for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 497                 if (fwd == null) {
 498                     continue;
 499                 }
 500
 501                 List<InstanceIdentifier<PhysicalInterface>>
 502                     physIfacesIid = resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 503                 Map<InstanceIdentifier<?>, RoutingCommand> routingCommandMap =
 504                     routingManager.createRouting(fwd, physIfacesIid, General.Operations.PUT);
 505
 506                 routingCommandMap.forEach((node, command) -> {
 507                     if (command != null && routingManager.submitRouting(command, node)) {
 508                         LOG.debug("Routing was successfully applied: {}.", command);
 509                     }
 510                 });
 511             }
 512         }
 513     }
 514
 515     public void deleteRouting(PolicyContext policyCtx) {
 516         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 517         if (cfg != null && cfg.getRendererForwarding() != null) {
 518             for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 519                 if (fwd == null) {
 520                     continue;
 521                 }
 522
 523                 List<InstanceIdentifier<PhysicalInterface>>
 524                     physIfacesIid = resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 525                 Map<InstanceIdentifier<?>, RoutingCommand> routingCommandMap =
 526                     routingManager.createRouting(fwd, physIfacesIid, General.Operations.DELETE);
 527                 routingCommandMap.forEach((node, command) -> {
 528                     if (command != null && routingManager.submitRouting(command, node)) {
 529                         LOG.debug("Routing was successfully removed: {}.", command);
 530                     }
 531                 });
 532             }
 533         }
 534     }
 535
 536     public void createDhcpRelay(RendererForwarding rendererForwarding,
 537         SetMultimap<String, NodeId> vppNodesByL2Fd) {
 538         for (RendererForwardingByTenant forwardingByTenant : rendererForwarding.getRendererForwardingByTenant()) {
 539             long vni_vrfid = NeutronTenantToVniMapper.getInstance().getVni(forwardingByTenant.getTenantId().getValue());
 540             for (RendererNetworkDomain networkDomain : forwardingByTenant.getRendererNetworkDomain()) {
 541                 org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.has.subnet.Subnet
 542                     subnet = networkDomain.getAugmentation((SubnetAugmentRenderer.class)).getSubnet();
 543                 LOG.trace("Creating Dhcp Relay from subnet: {}, vrfid: {}, vppNodesByL2Fd: {}", subnet, vni_vrfid,
 544                     vppNodesByL2Fd);
 545                 dhcpRelayHandler.createIpv4DhcpRelay(vni_vrfid, subnet, vppNodesByL2Fd);
 546             }
 547         }
 548     }
 549
 550     public void deleteDhcpRelay(RendererForwarding rendererForwarding, SetMultimap<String, NodeId> vppNodesByL2Fd) {
 551         for (RendererForwardingByTenant forwardingByTenant : rendererForwarding.getRendererForwardingByTenant()) {
 552             long vni_vrfid = NeutronTenantToVniMapper.getInstance().getVni(forwardingByTenant.getTenantId().getValue());
 553             for (RendererNetworkDomain networkDomain : forwardingByTenant.getRendererNetworkDomain()) {
 554                 org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.has.subnet.Subnet
 555                     subnet = networkDomain.getAugmentation((SubnetAugmentRenderer.class)).getSubnet();
 556                 dhcpRelayHandler.deleteIpv4DhcpRelay(vni_vrfid, subnet, vppNodesByL2Fd);
 557             }
 558         }
 559     }
 560 }