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.iface.InterfaceManager;
  30 import org.opendaylight.groupbasedpolicy.renderer.vpp.lisp.LispStateManager;
  31 import org.opendaylight.groupbasedpolicy.renderer.vpp.lisp.loopback.LoopbackManager;
  32 import org.opendaylight.groupbasedpolicy.renderer.vpp.lisp.flat.overlay.FlatOverlayManager;
  33 import org.opendaylight.groupbasedpolicy.renderer.vpp.nat.NatManager;
  34 import org.opendaylight.groupbasedpolicy.renderer.vpp.nat.NatUtil;
  35 import org.opendaylight.groupbasedpolicy.renderer.vpp.policy.acl.AclManager;
  36 import org.opendaylight.groupbasedpolicy.renderer.vpp.routing.RoutingManager;
  37 import org.opendaylight.groupbasedpolicy.renderer.vpp.util.General;
  38 import org.opendaylight.groupbasedpolicy.renderer.vpp.util.KeyFactory;
  39 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
  40 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
  41 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.nat.instances.nat.instance.mapping.table.MappingEntryBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.common.endpoint.fields.NetworkContainment;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.common.endpoint.fields.network.containment.Containment;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.common.endpoint.fields.network.containment.containment.ForwardingContextContainment;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.common.endpoint.fields.network.containment.containment.NetworkDomainContainment;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.has.absolute.location.absolute.location.LocationType;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.has.absolute.location.absolute.location.location.type.ExternalLocationCase;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.ParentEndpointChoice;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.parent.endpoint.choice.ParentEndpointCase;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.parent.endpoint.choice.parent.endpoint._case.ParentEndpoint;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ContextId;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.NetworkDomainId;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev160427.IpPrefixType;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev160427.L2FloodDomain;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev160427.MacAddressType;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev160427.SubnetAugmentRenderer;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.rev160427.NetworkDomain;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.rev160427.forwarding.fields.Parent;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.NatAddressRenderer;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.Configuration;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.Endpoints;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.endpoints.AddressEndpointWithLocation;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.RendererEndpointKey;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.RendererForwardingByTenant;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContext;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContextKey;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomain;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomainKey;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.Config;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.VlanNetwork;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes.InterfaceTypeChoice;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.LoopbackCase;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.GbpBridgeDomain;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.GbpBridgeDomainKey;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpoint;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpointKey;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.renderers.renderer.renderer.nodes.renderer.node.PhysicalInterface;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2.types.rev130827.VlanId;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev170315.VxlanVni;
  81 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  82 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  83 import org.slf4j.Logger;
  84 import org.slf4j.LoggerFactory;
  85
  86 import com.google.common.annotations.VisibleForTesting;
  87 import com.google.common.base.Optional;
  88 import com.google.common.base.Preconditions;
  89 import com.google.common.base.Strings;
  90 import com.google.common.collect.SetMultimap;
  91 import com.google.common.collect.Table;
  92
  93 public final class ForwardingManager {
  94
  95     private static final Logger LOG = LoggerFactory.getLogger(ForwardingManager.class);
  96     @VisibleForTesting
  97     private byte WAIT_FOR_BD_PROCESSING = 60; // seconds
  98     private long lastVxlanVni = 1L;
  99     private final Map<String, VxlanVni> vxlanVniByBridgeDomain = new HashMap<>();
 100     private final InterfaceManager ifaceManager;
 101     private final AclManager aclManager;
 102     private final BridgeDomainManager bdManager;
 103     private final NatManager natManager;
 104     private final RoutingManager routingManager;
 105     private final LispStateManager lispStateManager;
 106     private final LoopbackManager loopbackManager;
 107     private final FlatOverlayManager flatOverlayManager;
 108     private final DataBroker dataBroker;
 109
 110     public ForwardingManager(@Nonnull InterfaceManager ifaceManager, @Nonnull AclManager aclManager,
 111                              @Nonnull NatManager natManager, @Nonnull RoutingManager routingManager, @Nonnull BridgeDomainManager bdManager,
 112                              @Nonnull LispStateManager lispStateManager, @Nonnull LoopbackManager loopbackManager, @Nonnull FlatOverlayManager flatOverlayManager,
 113                              @Nonnull DataBroker dataBroker) {
 114         this.ifaceManager = Preconditions.checkNotNull(ifaceManager);
 115         this.bdManager = Preconditions.checkNotNull(bdManager);
 116         this.natManager = Preconditions.checkNotNull(natManager);
 117         this.routingManager = Preconditions.checkNotNull(routingManager);
 118         this.lispStateManager = Preconditions.checkNotNull(lispStateManager);
 119         this.loopbackManager = Preconditions.checkNotNull(loopbackManager);
 120         this.flatOverlayManager = Preconditions.checkNotNull(flatOverlayManager);
 121         this.dataBroker = Preconditions.checkNotNull(dataBroker);
 122         this.aclManager = Preconditions.checkNotNull(aclManager);
 123     }
 124
 125     public Optional<GbpBridgeDomain> readGbpBridgeDomainConfig(String name) {
 126         InstanceIdentifier<GbpBridgeDomain> bdIid = InstanceIdentifier.builder(Config.class)
 127             .child(GbpBridgeDomain.class, new GbpBridgeDomainKey(name))
 128             .build();
 129         ReadOnlyTransaction rTx = dataBroker.newReadOnlyTransaction();
 130         Optional<GbpBridgeDomain> optBd = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION, bdIid, rTx);
 131         rTx.close();
 132         return optBd;
 133     }
 134
 135     public void createBridgeDomainOnNodes(SetMultimap<String, NodeId> vppNodesByBridgeDomain) {
 136         for (String bd : vppNodesByBridgeDomain.keySet()) {
 137             Optional<GbpBridgeDomain> bdConfig = readGbpBridgeDomainConfig(bd);
 138             Set<NodeId> vppNodes = vppNodesByBridgeDomain.get(bd);
 139             if (bdConfig.isPresent()) {
 140                 if (bdConfig.get().getType().equals(VlanNetwork.class)) {
 141                     createVlanBridgeDomains(bd, bdConfig.get().getVlan(), vppNodes);
 142                 }
 143             } else {
 144                 VxlanVni vxlanVni = vxlanVniByBridgeDomain.get(bd);
 145                 if (vxlanVni == null) {
 146                     vxlanVni = new VxlanVni(lastVxlanVni++);
 147                     vxlanVniByBridgeDomain.put(bd, vxlanVni);
 148                 }
 149                 createVxlanBridgeDomains(bd, vxlanVni, vppNodes);
 150             }
 151         }
 152     }
 153
 154     private void createVxlanBridgeDomains(final String bd, final VxlanVni vni, final Set<NodeId> vppNodes) {
 155         for (NodeId vppNode : vppNodes) {
 156             try {
 157                 LOG.debug("Creating VXLAN bridge-domain {} on node {} with VNI {}", bd, vppNode.getValue(),
 158                         vni);
 159                 bdManager.createVxlanBridgeDomainOnVppNode(bd, vni, vppNode).get(WAIT_FOR_BD_PROCESSING,
 160                         TimeUnit.SECONDS);
 161             } catch (InterruptedException | ExecutionException e) {
 162                 LOG.warn("VXLAN Bridge domain {} was not created on node {}", bd, vppNode.getValue(), e);
 163             } catch (TimeoutException e) {
 164                 LOG.warn("Probably, VXLAN Bridge domain {} was not created on node {} because BridgeDomainManager "
 165                         + "did not respond by {} seconds. Check VBD log for more details",
 166                         bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 167             }
 168         }
 169     }
 170
 171     private void createVlanBridgeDomains(final String bd, final VlanId vlanId, final Set<NodeId> vppNodes) {
 172         for (NodeId vppNode : vppNodes) {
 173             try {
 174                 LOG.debug("Creating VLAN bridge-domain {} on node {} with VLAN ID {}", bd, vppNode.getValue(),
 175                         vlanId.getValue());
 176                 bdManager.createVlanBridgeDomainOnVppNode(bd, vlanId, vppNode).get(WAIT_FOR_BD_PROCESSING,
 177                         TimeUnit.SECONDS);
 178             } catch (InterruptedException | ExecutionException e) {
 179                 LOG.warn("VLAN Bridge domain {} was not created on node {}", bd, vppNode.getValue(), e);
 180             } catch (TimeoutException e) {
 181                 LOG.warn("Probably, VLAN Bridge domain {} was not created on node {} because BridgeDomainManager "
 182                         + "did not respond by {} seconds. Check VBD log for more details",
 183                         bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 184             }
 185         }
 186     }
 187
 188     public void removeBridgeDomainOnNodes(final SetMultimap<String, NodeId> vppNodesByBridgeDomain) {
 189         for (String bd : vppNodesByBridgeDomain.keySet()) {
 190             Set<NodeId> vppNodes = vppNodesByBridgeDomain.get(bd);
 191             for (NodeId vppNode : vppNodes) {
 192                 try {
 193                     bdManager.removeBridgeDomainFromVppNode(bd, vppNode).get(WAIT_FOR_BD_PROCESSING,
 194                             TimeUnit.SECONDS);
 195                 } catch (InterruptedException | ExecutionException e) {
 196                     LOG.warn("Bridge domain {} was not removed from node {}", bd, vppNode.getValue(), e);
 197                 } catch (TimeoutException e) {
 198                     LOG.warn("Probably, bridge domain {} was not removed from node {} because BridgeDomainManager "
 199                             + "did not respond by {} seconds. Check VBD log for more details",
 200                             bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 201                 }
 202             }
 203         }
 204     }
 205
 206     public void createForwardingForEndpoint(RendererEndpointKey rEpKey, PolicyContext policyCtx) {
 207         AddressEndpointWithLocation rEp = policyCtx.getAddrEpByKey().get(KeyFactory.addressEndpointKey(rEpKey));
 208
 209         if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 210             lispStateManager.configureEndPoint(rEp);
 211             if (ConfigUtil.getInstance().isL3FlatEnabled()) {
 212                 flatOverlayManager.configureEndpointForFlatOverlay(rEp);
 213                 loopbackManager.createSimpleLoopbackIfNeeded(rEp);
 214             }
 215         }
 216
 217         ExternalLocationCase rEpLoc = resolveAndValidateLocation(rEp);
 218         if (Strings.isNullOrEmpty(rEpLoc.getExternalNodeConnector())) {
 219             // TODO add it to the status for renderer manager
 220             LOG.info("Renderer endpoint does not have external-node-connector therefore it is ignored {}", rEp);
 221             return;
 222         }
 223
 224         if (Strings.isNullOrEmpty(rEpLoc.getExternalNode())) {
 225             java.util.Optional<String> optL2FloodDomain = resolveL2FloodDomain(rEp, policyCtx);
 226             if (!optL2FloodDomain.isPresent()) {
 227                 // TODO add it to the status for renderer manager
 228                 LOG.info("Renderer endpoint does not have l2FloodDomain as network containment {}", rEp);
 229                 return;
 230             }
 231             if (!ConfigUtil.getInstance().isL3FlatEnabled()) {
 232                 String l2FloodDomain = optL2FloodDomain.get();
 233                 try {
 234                     ifaceManager.addBridgeDomainToInterface(l2FloodDomain, rEp, aclManager.resolveAclsOnInterface(
 235                             rEpKey, policyCtx), isBviForEndpoint(rEp)).get();
 236                     LOG.debug("Interface added to bridge-domain {} for endpoint {}", l2FloodDomain, rEp);
 237
 238                     if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 239                         loopbackManager.createBviLoopbackIfNeeded(rEp, l2FloodDomain);
 240                     }
 241
 242                 } catch (InterruptedException | ExecutionException e) {
 243                     // TODO add it to the status for renderer manager
 244                     LOG.warn("Interface was not added to bridge-domain {} for endpoint {}", l2FloodDomain, rEp, e);
 245                 }
 246             }
 247             aclManager.updateAclsForPeers(policyCtx, rEpKey);
 248         } else {
 249             LOG.debug("Forwarding is not created - Location of renderer endpoint contains "
 250                     + "external-node therefore VPP renderer assumes that interface for endpoint is "
 251                     + "already assigned in bridge-domain representing external-node. {}", rEp);
 252         }
 253     }
 254
 255     private boolean isBviForEndpoint(AddressEndpointWithLocation rEp) {
 256         VppEndpointKey vppEndpointKey =
 257             new VppEndpointKey(rEp.getAddress(), rEp.getAddressType(), rEp.getContextId(), rEp.getContextType());
 258         ReadOnlyTransaction rTx = dataBroker.newReadOnlyTransaction();
 259         Optional<VppEndpoint> vppEndpointOptional =
 260             DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,
 261                 InstanceIdentifier.builder(Config.class).child(VppEndpoint.class, vppEndpointKey).build(), rTx);
 262         if (vppEndpointOptional.isPresent()) {
 263             InterfaceTypeChoice interfaceTypeChoice = vppEndpointOptional.get().getInterfaceTypeChoice();
 264             if (interfaceTypeChoice instanceof LoopbackCase) {
 265                 LOG.trace("Vpp renderer endpoint {} IS a BVI interface.", rEp.getKey());
 266                 return ((LoopbackCase) interfaceTypeChoice).isBvi();
 267             }
 268         }
 269         rTx.close();
 270         LOG.trace("Vpp renderer endpoint {} IS NOT a BVI interface.", rEp.getKey());
 271         return false;
 272     }
 273
 274     public void removeForwardingForEndpoint(RendererEndpointKey rEpKey, PolicyContext policyCtx) {
 275         AddressEndpointWithLocation rEp = policyCtx.getAddrEpByKey().get(KeyFactory.addressEndpointKey(rEpKey));
 276         ExternalLocationCase rEpLoc = resolveAndValidateLocation(rEp);
 277         if (Strings.isNullOrEmpty(rEpLoc.getExternalNodeConnector())) {
 278             // nothing was created for endpoint therefore nothing is removed
 279             return;
 280         }
 281         if (!Strings.isNullOrEmpty(rEpLoc.getExternalNode())) {
 282             try {
 283                 if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 284                     lispStateManager.deleteLispConfigurationForEndpoint(rEp);
 285                     loopbackManager.handleEndpointDelete(rEp);
 286
 287                     if (ConfigUtil.getInstance().isL3FlatEnabled()) {
 288                         flatOverlayManager.handleEndpointDeleteForFlatOverlay(rEp);
 289                     }
 290
 291                 }
 292                 ifaceManager.deleteBridgeDomainFromInterface(rEp).get();
 293                 LOG.debug("bridge-domain was deleted from interface for endpoint {}", rEp);
 294             } catch (InterruptedException | ExecutionException e) {
 295                 // TODO add it to the status for renderer manager
 296                 LOG.warn("bridge-domain was not deleted from interface for endpoint {}", rEp, e);
 297             }
 298         } else {
 299             LOG.debug("Forwarding is not removed - Location of renderer endpoint does not contain "
 300                     + "external-node therefore VPP renderer assumes that interface for endpoint is not "
 301                     + "assigned to bridge-domain representing external-node. {}", rEp);
 302         }
 303     }
 304
 305     public static ExternalLocationCase resolveAndValidateLocation(AddressEndpointWithLocation addrEpWithLoc) {
 306         LocationType locationType = addrEpWithLoc.getAbsoluteLocation().getLocationType();
 307         if (!(locationType instanceof ExternalLocationCase)) {
 308             throw new IllegalStateException("Endpoint does not have external location " + addrEpWithLoc);
 309         }
 310         ExternalLocationCase result = (ExternalLocationCase) locationType;
 311         if (result.getExternalNodeMountPoint() == null) {
 312             throw new IllegalStateException("Endpoint does not have external-node-mount-point " + addrEpWithLoc);
 313         }
 314         return result;
 315     }
 316
 317     public static java.util.Optional<String> resolveL2FloodDomain(@Nonnull AddressEndpointWithLocation ep,
 318             @Nonnull PolicyContext policyCtx) {
 319         NetworkContainment netCont = ep.getNetworkContainment();
 320         if (netCont == null) {
 321             return java.util.Optional.empty();
 322         }
 323         Containment containment = netCont.getContainment();
 324         if (containment instanceof ForwardingContextContainment) {
 325             ForwardingContextContainment fwCtxCont = (ForwardingContextContainment) containment;
 326             if (L2FloodDomain.class.equals(fwCtxCont.getContextType())) {
 327                 return fwCtxCont.getContextId() == null ? java.util.Optional.empty() : java.util.Optional
 328                     .of(fwCtxCont.getContextId().getValue());
 329             }
 330         }
 331         if (containment instanceof NetworkDomainContainment) {
 332             final NetworkDomainContainment netDomainCont = (NetworkDomainContainment) containment;
 333             final TenantId tenantId = ep.getTenant();
 334             final NetworkDomainId domainId = netDomainCont.getNetworkDomainId();
 335             final Class<? extends NetworkDomain> domainKey = netDomainCont.getNetworkDomainType();
 336             final RendererNetworkDomainKey rendererNetworkDomainKey = new RendererNetworkDomainKey(domainId, domainKey);
 337             final RendererNetworkDomain rendererNetworkDomain =
 338                     policyCtx.getNetworkDomainTable().get(tenantId, rendererNetworkDomainKey);
 339             if (rendererNetworkDomain == null) {
 340                 LOG.debug("Network domain not found. Containment: {}", containment);
 341                 return java.util.Optional.empty();
 342             }
 343             java.util.Optional<String> optL2Fd = getForwardingCtxForParent(ep.getTenant(),
 344                     rendererNetworkDomain.getParent(), policyCtx.getForwardingCtxTable())
 345                         .filter(fwdCtx -> L2FloodDomain.class.equals(fwdCtx.getContextType()))
 346                         .map(RendererForwardingContext::getContextId)
 347                         .map(ContextId::getValue);
 348             if (!optL2Fd.isPresent()) {
 349                 LOG.debug("network-domain-containment in endpoint does not have L2-flood-domain as parent. "
 350                         + "This case is not supported in VPP renderer. {}", ep);
 351             }
 352             return optL2Fd;
 353         }
 354         return java.util.Optional.empty();
 355     }
 356
 357     private static @Nonnull java.util.Optional<RendererForwardingContext> getForwardingCtxForParent(
 358             @Nullable TenantId tenant, @Nullable Parent parent,
 359             Table<TenantId, RendererForwardingContextKey, RendererForwardingContext> forwardingCtxTable) {
 360         if (tenant == null || parent == null) {
 361             return java.util.Optional.empty();
 362         }
 363         if (parent.getContextId() != null && parent.getContextType() != null) {
 364             return java.util.Optional.ofNullable(forwardingCtxTable.get(tenant,
 365                     new RendererForwardingContextKey(parent.getContextId(), parent.getContextType())));
 366         }
 367         return java.util.Optional.empty();
 368     }
 369
 370     void syncNatEntries(PolicyContext policyCtx) {
 371         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 372         if(cfg != null) {
 373             final List<MappingEntryBuilder> sNatEntries = resolveStaticNatTableEntries(cfg.getEndpoints());
 374             LOG.trace("Syncing static NAT entries {}", sNatEntries);
 375             if (cfg.getRendererForwarding() != null) {
 376                 for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 377                     List<InstanceIdentifier<PhysicalInterface>> physIfacesIid =
 378                         resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 379                     natManager.submitNatChanges(physIfacesIid, sNatEntries, policyCtx, true);
 380                 }
 381             }
 382         }
 383     }
 384
 385     public void deleteNatEntries(PolicyContext policyCtx) {
 386         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 387         if(cfg != null) {
 388             List<MappingEntryBuilder> natEntries = resolveStaticNatTableEntries(cfg.getEndpoints());
 389             if (natEntries.isEmpty()) {
 390                 LOG.trace("NAT entries are empty,nothing to delete, skipping processing.");
 391                 return;
 392             }
 393             LOG.trace("Deleting NAT entries {}", natEntries);
 394             if (cfg.getRendererForwarding() != null) {
 395                 for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 396                     List<InstanceIdentifier<PhysicalInterface>> physIfacesIid =
 397                         resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 398                     natManager.submitNatChanges(physIfacesIid, natEntries, policyCtx, false);
 399                 }
 400             }
 401         }
 402     }
 403
 404     public List<InstanceIdentifier<PhysicalInterface>> resolvePhysicalInterfacesForNat(
 405             List<RendererNetworkDomain> rendNetDomains) {
 406         List<InstanceIdentifier<PhysicalInterface>> physIfaces = new ArrayList<>();
 407         for (RendererNetworkDomain rendDomain : rendNetDomains) {
 408             Optional<IpPrefix> resolvedIpPrefix = resolveIpPrefix(rendDomain);
 409             if (resolvedIpPrefix.isPresent()) {
 410                 Optional<InstanceIdentifier<PhysicalInterface>> resPhIface =
 411                     NatUtil.resolvePhysicalInterface(resolvedIpPrefix.get(), dataBroker.newReadOnlyTransaction());
 412                 if (resPhIface.isPresent()) {
 413                     physIfaces.add(resPhIface.get());
 414                 }
 415             }
 416         }
 417         return physIfaces;
 418     }
 419
 420     private Optional<IpPrefix> resolveIpPrefix(RendererNetworkDomain rendDomain) {
 421         SubnetAugmentRenderer subnetAug = rendDomain.getAugmentation(SubnetAugmentRenderer.class);
 422         if (subnetAug.getSubnet() != null) {
 423             return Optional.of(subnetAug.getSubnet().getIpPrefix());
 424         }
 425         return Optional.absent();
 426     }
 427
 428     private List<MappingEntryBuilder> resolveStaticNatTableEntries(Endpoints endpoints) {
 429         List<MappingEntryBuilder> sNatEntries = new ArrayList<>();
 430         for (AddressEndpointWithLocation addrEp : endpoints.getAddressEndpointWithLocation()) {
 431             if (addrEp.getAugmentation(NatAddressRenderer.class) == null) {
 432                 continue;
 433             }
 434             String endpointIP = resolveEpIpAddressForSnat(addrEp);
 435
 436             if (endpointIP == null) {
 437                 LOG.warn("Endpoints {} IP cannot be null, skipping processing of SNAT", addrEp);
 438                 continue;
 439             }
 440
 441             NatAddressRenderer natAddr = addrEp.getAugmentation(NatAddressRenderer.class);
 442             if (natAddr.getNatAddress() == null && natAddr.getNatAddress().getIpv4Address() == null) {
 443                 LOG.warn("Only Ipv4 SNAT is currently supported. Cannot apply SNAT for [{},{}]", endpointIP,
 444                         natAddr.getNatAddress());
 445                 continue;
 446             }
 447             Optional<MappingEntryBuilder> entry = natManager.resolveSnatEntry(endpointIP, natAddr.getNatAddress()
 448                 .getIpv4Address());
 449             if (entry.isPresent()) {
 450                 sNatEntries.add(entry.get());
 451             }
 452         }
 453         return sNatEntries;
 454     }
 455
 456     private String resolveEpIpAddressForSnat(AddressEndpointWithLocation addrEp) {
 457         if (addrEp.getAddressType().equals(MacAddressType.class)) {
 458             ParentEndpointChoice parentEndpointChoice = addrEp.getParentEndpointChoice();
 459             if (parentEndpointChoice instanceof ParentEndpointCase
 460                 && !((ParentEndpointCase) parentEndpointChoice).getParentEndpoint().isEmpty()) {
 461                 ParentEndpoint parentEndpoint = ((ParentEndpointCase) parentEndpointChoice).getParentEndpoint().get(0);
 462                 if (parentEndpoint.getAddressType().equals(IpPrefixType.class)) {
 463                     String[] ipWithPrefix = parentEndpoint.getAddress().split("/");
 464                     return ipWithPrefix[0];
 465                 } else {
 466                     LOG.warn("Endpoint {} Does not have a Parent Ep with IP for SNAT. skipping processing of SNAT",
 467                         addrEp);
 468                     return null;
 469                 }
 470
 471             } else {
 472                 LOG.warn("Endpoint {} Does not contain IP address for SNAT. skipping processing of SNAT", addrEp);
 473                 return null;
 474             }
 475         } else if (addrEp.getAddressType().equals(IpPrefixType.class)) {
 476             return addrEp.getAddress();
 477         }
 478         return null;
 479     }
 480
 481     @VisibleForTesting
 482     void setTimer(byte time) {
 483         WAIT_FOR_BD_PROCESSING = time;
 484     }
 485
 486     public void syncRouting(PolicyContext policyCtx) {
 487         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 488         if (cfg != null && cfg.getRendererForwarding() != null) {
 489             for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 490                 if (fwd == null) {
 491                     continue;
 492                 }
 493
 494                 List<InstanceIdentifier<PhysicalInterface>>
 495                     physIfacesIid = resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 496                 Map<InstanceIdentifier<?>, RoutingCommand> routingCommandMap =
 497                     routingManager.createRouting(fwd, physIfacesIid, General.Operations.PUT);
 498
 499                 routingCommandMap.forEach((node, command) -> {
 500                     if (command != null && routingManager.submitRouting(command, node)) {
 501                         LOG.debug("Routing was successfully applied: {}.", command);
 502                     }
 503                 });
 504             }
 505         }
 506     }
 507
 508     public void deleteRouting(PolicyContext policyCtx) {
 509         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 510         if (cfg != null && cfg.getRendererForwarding() != null) {
 511             for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 512                 if (fwd == null) {
 513                     continue;
 514                 }
 515
 516                 List<InstanceIdentifier<PhysicalInterface>>
 517                     physIfacesIid = resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 518                 Map<InstanceIdentifier<?>, RoutingCommand> routingCommandMap =
 519                     routingManager.createRouting(fwd, physIfacesIid, General.Operations.DELETE);
 520                 routingCommandMap.forEach((node, command) -> {
 521                     if (command != null && routingManager.submitRouting(command, node)) {
 522                         LOG.debug("Routing was successfully removed: {}.", command);
 523                     }
 524                 });
 525             }
 526         }
 527     }
 528 }