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.has.child.endpoints.ChildEndpoint;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.ParentEndpointChoice;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.parent.endpoint.choice.ParentEndpointCase;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.parent.endpoint.choice.parent.endpoint._case.ParentEndpoint;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ContextId;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.NetworkDomainId;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.IpPrefixType;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.L2FloodDomain;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.MacAddressType;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.SubnetAugmentRenderer;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.rev160427.NetworkDomain;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.rev160427.forwarding.fields.Parent;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.NatAddressRenderer;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.Configuration;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.Endpoints;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.RendererForwarding;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.endpoints.AddressEndpointWithLocation;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.RendererEndpointKey;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.RendererForwardingByTenant;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContext;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContextKey;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomain;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomainKey;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.Config;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.VlanNetwork;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes.InterfaceTypeChoice;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.LoopbackCase;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.GbpBridgeDomain;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.GbpBridgeDomainKey;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpoint;
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpointKey;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.renderers.renderer.renderer.nodes.renderer.node.PhysicalInterface;
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2.types.rev130827.VlanId;
  84 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev170607.VxlanVni;
  85 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  86 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  87 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  88 import org.slf4j.Logger;
  89 import org.slf4j.LoggerFactory;
  90
  91 import com.google.common.annotations.VisibleForTesting;
  92 import com.google.common.base.Optional;
  93 import com.google.common.base.Preconditions;
  94 import com.google.common.base.Strings;
  95 import com.google.common.collect.SetMultimap;
  96 import com.google.common.collect.Table;
  97
  98 public final class ForwardingManager {
  99
 100     private static final Logger LOG = LoggerFactory.getLogger(ForwardingManager.class);
 101     @VisibleForTesting
 102     private byte WAIT_FOR_BD_PROCESSING = 60; // seconds
 103     private long lastVxlanVni = 1L;
 104     private final Map<String, VxlanVni> vxlanVniByBridgeDomain = new HashMap<>();
 105     private final InterfaceManager ifaceManager;
 106     private final AclManager aclManager;
 107     private final BridgeDomainManager bdManager;
 108     private final NatManager natManager;
 109     private final RoutingManager routingManager;
 110     private final LispStateManager lispStateManager;
 111     private final LoopbackManager loopbackManager;
 112     private final FlatOverlayManager flatOverlayManager;
 113     private final DhcpRelayHandler dhcpRelayHandler;
 114     private final DataBroker dataBroker;
 115
 116     public ForwardingManager(@Nonnull InterfaceManager ifaceManager, @Nonnull AclManager aclManager,
 117                              @Nonnull NatManager natManager, @Nonnull RoutingManager routingManager, @Nonnull BridgeDomainManager bdManager,
 118                              @Nonnull LispStateManager lispStateManager, @Nonnull LoopbackManager loopbackManager, @Nonnull FlatOverlayManager flatOverlayManager,
 119                              @Nonnull DhcpRelayHandler dhcpRelayHandler, @Nonnull DataBroker dataBroker) {
 120         this.ifaceManager = Preconditions.checkNotNull(ifaceManager);
 121         this.bdManager = Preconditions.checkNotNull(bdManager);
 122         this.natManager = Preconditions.checkNotNull(natManager);
 123         this.routingManager = Preconditions.checkNotNull(routingManager);
 124         this.lispStateManager = Preconditions.checkNotNull(lispStateManager);
 125         this.loopbackManager = Preconditions.checkNotNull(loopbackManager);
 126         this.flatOverlayManager = Preconditions.checkNotNull(flatOverlayManager);
 127         this.dataBroker = Preconditions.checkNotNull(dataBroker);
 128         this.aclManager = Preconditions.checkNotNull(aclManager);
 129         this.dhcpRelayHandler = Preconditions.checkNotNull(dhcpRelayHandler);
 130     }
 131
 132     public Optional<GbpBridgeDomain> readGbpBridgeDomainConfig(String name) {
 133         InstanceIdentifier<GbpBridgeDomain> bdIid = InstanceIdentifier.builder(Config.class)
 134             .child(GbpBridgeDomain.class, new GbpBridgeDomainKey(name))
 135             .build();
 136         ReadOnlyTransaction rTx = dataBroker.newReadOnlyTransaction();
 137         Optional<GbpBridgeDomain> optBd = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION, bdIid, rTx);
 138         rTx.close();
 139         return optBd;
 140     }
 141
 142     public void createBridgeDomainOnNodes(SetMultimap<String, NodeId> vppNodesByBridgeDomain) {
 143         for (String bd : vppNodesByBridgeDomain.keySet()) {
 144             Optional<GbpBridgeDomain> bdConfig = readGbpBridgeDomainConfig(bd);
 145             Set<NodeId> vppNodes = vppNodesByBridgeDomain.get(bd);
 146             if (bdConfig.isPresent()) {
 147                 if (bdConfig.get().getType().equals(VlanNetwork.class)) {
 148                     createVlanBridgeDomains(bd, bdConfig.get().getVlan(), vppNodes);
 149                 }
 150             } else {
 151                 VxlanVni vxlanVni = vxlanVniByBridgeDomain.get(bd);
 152                 if (vxlanVni == null) {
 153                     vxlanVni = new VxlanVni(lastVxlanVni++);
 154                     vxlanVniByBridgeDomain.put(bd, vxlanVni);
 155                 }
 156                 createVxlanBridgeDomains(bd, vxlanVni, vppNodes);
 157             }
 158         }
 159     }
 160
 161     private void createVxlanBridgeDomains(final String bd, final VxlanVni vni, final Set<NodeId> vppNodes) {
 162         for (NodeId vppNode : vppNodes) {
 163             try {
 164                 LOG.debug("Creating VXLAN bridge-domain {} on node {} with VNI {}", bd, vppNode.getValue(),
 165                         vni);
 166                 bdManager.createVxlanBridgeDomainOnVppNode(bd, vni, vppNode).get(WAIT_FOR_BD_PROCESSING,
 167                         TimeUnit.SECONDS);
 168             } catch (InterruptedException | ExecutionException e) {
 169                 LOG.warn("VXLAN Bridge domain {} was not created on node {}", bd, vppNode.getValue(), e);
 170             } catch (TimeoutException e) {
 171                 LOG.warn("Probably, VXLAN Bridge domain {} was not created on node {} because BridgeDomainManager "
 172                         + "did not respond by {} seconds. Check VBD log for more details",
 173                         bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 174             }
 175         }
 176     }
 177
 178     private void createVlanBridgeDomains(final String bd, final VlanId vlanId, final Set<NodeId> vppNodes) {
 179         for (NodeId vppNode : vppNodes) {
 180             try {
 181                 LOG.debug("Creating VLAN bridge-domain {} on node {} with VLAN ID {}", bd, vppNode.getValue(),
 182                         vlanId.getValue());
 183                 bdManager.createVlanBridgeDomainOnVppNode(bd, vlanId, vppNode).get(WAIT_FOR_BD_PROCESSING,
 184                         TimeUnit.SECONDS);
 185             } catch (InterruptedException | ExecutionException e) {
 186                 LOG.warn("VLAN Bridge domain {} was not created on node {}", bd, vppNode.getValue(), e);
 187             } catch (TimeoutException e) {
 188                 LOG.warn("Probably, VLAN Bridge domain {} was not created on node {} because BridgeDomainManager "
 189                         + "did not respond by {} seconds. Check VBD log for more details",
 190                         bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 191             }
 192         }
 193     }
 194
 195     public void removeBridgeDomainOnNodes(final SetMultimap<String, NodeId> vppNodesByBridgeDomain) {
 196         for (String bd : vppNodesByBridgeDomain.keySet()) {
 197             Set<NodeId> vppNodes = vppNodesByBridgeDomain.get(bd);
 198             for (NodeId vppNode : vppNodes) {
 199                 try {
 200                     bdManager.removeBridgeDomainFromVppNode(bd, vppNode).get(WAIT_FOR_BD_PROCESSING,
 201                             TimeUnit.SECONDS);
 202                 } catch (InterruptedException | ExecutionException e) {
 203                     LOG.warn("Bridge domain {} was not removed from node {}", bd, vppNode.getValue(), e);
 204                 } catch (TimeoutException e) {
 205                     LOG.warn("Probably, bridge domain {} was not removed from node {} because BridgeDomainManager "
 206                             + "did not respond by {} seconds. Check VBD log for more details",
 207                             bd, vppNode.getValue(), WAIT_FOR_BD_PROCESSING, e);
 208                 }
 209             }
 210         }
 211     }
 212
 213     public void createForwardingForEndpoint(RendererEndpointKey rEpKey, PolicyContext policyCtx) {
 214         AddressEndpointWithLocation rEp = policyCtx.getAddrEpByKey().get(KeyFactory.addressEndpointKey(rEpKey));
 215
 216         if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 217             lispStateManager.processCreateEndPoint(rEp);
 218             if (ConfigUtil.getInstance().isL3FlatEnabled()) {
 219                 flatOverlayManager.configureEndpointForFlatOverlay(rEp);
 220                 loopbackManager.createSimpleLoopbackIfNeeded(rEp);
 221             }
 222         }
 223
 224         ExternalLocationCase rEpLoc = resolveAndValidateLocation(rEp);
 225         if (rEpLoc == null || Strings.isNullOrEmpty(rEpLoc.getExternalNodeConnector())) {
 226             // TODO add it to the status for renderer manager
 227             LOG.info("Renderer endpoint does not have external-node-connector therefore it is ignored {}", rEp);
 228             return;
 229         }
 230
 231         if (Strings.isNullOrEmpty(rEpLoc.getExternalNode())) {
 232             java.util.Optional<String> optL2FloodDomain = resolveL2FloodDomain(rEp, policyCtx);
 233             if (!optL2FloodDomain.isPresent()) {
 234                 // TODO add it to the status for renderer manager
 235                 LOG.info("Renderer endpoint does not have l2FloodDomain as network containment {}", rEp);
 236                 return;
 237             }
 238             if (!ConfigUtil.getInstance().isL3FlatEnabled()) {
 239                 String l2FloodDomain = optL2FloodDomain.get();
 240                 try {
 241                     ifaceManager.addBridgeDomainToInterface(l2FloodDomain, rEp, aclManager.resolveAclsOnInterface(
 242                             rEpKey, policyCtx).get(), isBviForEndpoint(rEp)).get();
 243                     LOG.debug("Interface added to bridge-domain {} for endpoint {}", l2FloodDomain, rEp);
 244
 245                     if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 246                         loopbackManager.createBviLoopbackIfNeeded(rEp, l2FloodDomain);
 247                     }
 248
 249                 } catch (InterruptedException | ExecutionException e) {
 250                     // TODO add it to the status for renderer manager
 251                     LOG.warn("Interface was not added to bridge-domain {} for endpoint {}", l2FloodDomain, rEp, e);
 252                 }
 253             }
 254             aclManager.updateAclsForPeers(policyCtx, rEpKey);
 255         } else {
 256             LOG.debug("Forwarding is not created - Location of renderer endpoint contains "
 257                     + "external-node therefore VPP renderer assumes that interface for endpoint is "
 258                     + "already assigned in bridge-domain representing external-node. {}", rEp);
 259         }
 260     }
 261
 262     private boolean isBviForEndpoint(AddressEndpointWithLocation rEp) {
 263         List<ChildEndpoint> childEndpointList = rEp.getChildEndpoint();
 264         VppEndpointKey vppEndpointKey;
 265         if(childEndpointList == null || !childEndpointList.stream().findFirst().isPresent()) {
 266             vppEndpointKey =
 267                 new VppEndpointKey(rEp.getAddress(), rEp.getAddressType(), rEp.getContextId(), rEp.getContextType());
 268         } else {
 269             java.util.Optional<ChildEndpoint> childEndpointOpt = childEndpointList.stream().findFirst();
 270             vppEndpointKey =
 271                 new VppEndpointKey(childEndpointOpt.get().getAddress(), childEndpointOpt.get().getAddressType(),
 272                     childEndpointOpt.get().getContextId(), childEndpointOpt.get().getContextType());
 273         }
 274         ReadOnlyTransaction rTx = dataBroker.newReadOnlyTransaction();
 275         Optional<VppEndpoint> vppEndpointOptional =
 276             DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,
 277                 InstanceIdentifier.builder(Config.class).child(VppEndpoint.class, vppEndpointKey).build(), rTx);
 278         rTx.close();
 279         if (vppEndpointOptional.isPresent()) {
 280             InterfaceTypeChoice interfaceTypeChoice = vppEndpointOptional.get().getInterfaceTypeChoice();
 281             if (interfaceTypeChoice instanceof LoopbackCase) {
 282                 LOG.trace("Found new BVI interface: {}", rEp.getKey());
 283                 return ((LoopbackCase) interfaceTypeChoice).isBvi();
 284             }
 285         }
 286
 287         return false;
 288     }
 289
 290     public void removeForwardingForEndpoint(RendererEndpointKey rEpKey, PolicyContext policyCtx) {
 291         AddressEndpointWithLocation rEp = policyCtx.getAddrEpByKey().get(KeyFactory.addressEndpointKey(rEpKey));
 292         ExternalLocationCase rEpLoc = resolveAndValidateLocation(rEp);
 293
 294         if (ConfigUtil.getInstance().isLispOverlayEnabled()) {
 295             lispStateManager.processDeleteEndpoint(rEp);
 296             if (ConfigUtil.getInstance().isL3FlatEnabled()) {
 297                 flatOverlayManager.handleEndpointDeleteForFlatOverlay(rEp);
 298             }
 299             loopbackManager.handleEndpointDelete(rEp);
 300         }
 301
 302         if (rEpLoc == null || Strings.isNullOrEmpty(rEpLoc.getExternalNodeConnector())) {
 303             // nothing was created for endpoint therefore nothing is removed
 304             return;
 305         }
 306         if (!Strings.isNullOrEmpty(rEpLoc.getExternalNode())) {
 307             try {
 308                 ifaceManager.deleteBridgeDomainFromInterface(rEp).get();
 309                 LOG.debug("bridge-domain was deleted from interface for endpoint {}", rEp);
 310             } catch (InterruptedException | ExecutionException e) {
 311                 // TODO add it to the status for renderer manager
 312                 LOG.warn("bridge-domain was not deleted from interface for endpoint {}", rEp, e);
 313             }
 314         } else {
 315             LOG.debug("Forwarding is not removed - Location of renderer endpoint does not contain "
 316                     + "external-node therefore VPP renderer assumes that interface for endpoint is not "
 317                     + "assigned to bridge-domain representing external-node. {}", rEp);
 318         }
 319     }
 320
 321     public static ExternalLocationCase resolveAndValidateLocation(AddressEndpointWithLocation addrEpWithLoc) {
 322         if (addrEpWithLoc.getAbsoluteLocation() != null
 323                 && addrEpWithLoc.getAbsoluteLocation().getLocationType() != null) {
 324             LocationType locationType = addrEpWithLoc.getAbsoluteLocation().getLocationType();
 325             if (!(locationType instanceof ExternalLocationCase)) {
 326                 throw new IllegalStateException("Endpoint does not have external location " + addrEpWithLoc);
 327             }
 328             ExternalLocationCase result = (ExternalLocationCase) locationType;
 329             if (result.getExternalNodeMountPoint() == null) {
 330                 throw new IllegalStateException("Endpoint does not have external-node-mount-point " + addrEpWithLoc);
 331             }
 332             return result;
 333         }
 334         return null;
 335     }
 336
 337     public static java.util.Optional<String> resolveL2FloodDomain(@Nonnull AddressEndpointWithLocation ep,
 338             @Nonnull PolicyContext policyCtx) {
 339         NetworkContainment netCont = ep.getNetworkContainment();
 340         if (netCont == null) {
 341             return java.util.Optional.empty();
 342         }
 343         Containment containment = netCont.getContainment();
 344         if (containment instanceof ForwardingContextContainment) {
 345             ForwardingContextContainment fwCtxCont = (ForwardingContextContainment) containment;
 346             if (L2FloodDomain.class.equals(fwCtxCont.getContextType())) {
 347                 return fwCtxCont.getContextId() == null ? java.util.Optional.empty() : java.util.Optional
 348                     .of(fwCtxCont.getContextId().getValue());
 349             }
 350         }
 351         if (containment instanceof NetworkDomainContainment) {
 352             final NetworkDomainContainment netDomainCont = (NetworkDomainContainment) containment;
 353             final TenantId tenantId = ep.getTenant();
 354             final NetworkDomainId domainId = netDomainCont.getNetworkDomainId();
 355             final Class<? extends NetworkDomain> domainKey = netDomainCont.getNetworkDomainType();
 356             final RendererNetworkDomainKey rendererNetworkDomainKey = new RendererNetworkDomainKey(domainId, domainKey);
 357             final RendererNetworkDomain rendererNetworkDomain =
 358                     policyCtx.getNetworkDomainTable().get(tenantId, rendererNetworkDomainKey);
 359             if (rendererNetworkDomain == null) {
 360                 LOG.debug("Network domain not found. Containment: {}", containment);
 361                 return java.util.Optional.empty();
 362             }
 363             java.util.Optional<String> optL2Fd = getForwardingCtxForParent(ep.getTenant(),
 364                     rendererNetworkDomain.getParent(), policyCtx.getForwardingCtxTable())
 365                         .filter(fwdCtx -> L2FloodDomain.class.equals(fwdCtx.getContextType()))
 366                         .map(RendererForwardingContext::getContextId)
 367                         .map(ContextId::getValue);
 368             if (!optL2Fd.isPresent()) {
 369                 LOG.debug("network-domain-containment in endpoint does not have L2-flood-domain as parent. "
 370                         + "This case is not supported in VPP renderer. {}", ep);
 371             }
 372             return optL2Fd;
 373         }
 374         return java.util.Optional.empty();
 375     }
 376
 377     private static @Nonnull java.util.Optional<RendererForwardingContext> getForwardingCtxForParent(
 378             @Nullable TenantId tenant, @Nullable Parent parent,
 379             Table<TenantId, RendererForwardingContextKey, RendererForwardingContext> forwardingCtxTable) {
 380         if (tenant == null || parent == null) {
 381             return java.util.Optional.empty();
 382         }
 383         if (parent.getContextId() != null && parent.getContextType() != null) {
 384             return java.util.Optional.ofNullable(forwardingCtxTable.get(tenant,
 385                     new RendererForwardingContextKey(parent.getContextId(), parent.getContextType())));
 386         }
 387         return java.util.Optional.empty();
 388     }
 389
 390     void syncNatEntries(PolicyContext policyCtx) {
 391         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 392         if(cfg != null) {
 393             final List<MappingEntryBuilder> sNatEntries = resolveStaticNatTableEntries(cfg.getEndpoints());
 394             LOG.trace("Syncing static NAT entries {}", sNatEntries);
 395             if (cfg.getRendererForwarding() != null) {
 396                 for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 397                     List<InstanceIdentifier<PhysicalInterface>> physIfacesIid =
 398                         resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 399                     natManager.submitNatChanges(physIfacesIid, sNatEntries, policyCtx, true);
 400                 }
 401             }
 402         }
 403     }
 404
 405     public void deleteNatEntries(PolicyContext policyCtx) {
 406         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 407         if(cfg != null) {
 408             List<MappingEntryBuilder> natEntries = resolveStaticNatTableEntries(cfg.getEndpoints());
 409             if (natEntries.isEmpty()) {
 410                 LOG.trace("NAT entries are empty,nothing to delete, skipping processing.");
 411                 return;
 412             }
 413             LOG.trace("Deleting NAT entries {}", natEntries);
 414             if (cfg.getRendererForwarding() != null) {
 415                 for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 416                     List<InstanceIdentifier<PhysicalInterface>> physIfacesIid =
 417                         resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 418                     natManager.submitNatChanges(physIfacesIid, natEntries, policyCtx, false);
 419                 }
 420             }
 421         }
 422     }
 423
 424     public List<InstanceIdentifier<PhysicalInterface>> resolvePhysicalInterfacesForNat(
 425             List<RendererNetworkDomain> rendNetDomains) {
 426         List<InstanceIdentifier<PhysicalInterface>> physIfaces = new ArrayList<>();
 427         for (RendererNetworkDomain rendDomain : rendNetDomains) {
 428             Optional<IpPrefix> resolvedIpPrefix = resolveIpPrefix(rendDomain);
 429             if (resolvedIpPrefix.isPresent()) {
 430                 Optional<InstanceIdentifier<PhysicalInterface>> resPhIface =
 431                     NatUtil.resolvePhysicalInterface(resolvedIpPrefix.get(), dataBroker.newReadOnlyTransaction());
 432                 if (resPhIface.isPresent()) {
 433                     physIfaces.add(resPhIface.get());
 434                 }
 435             }
 436         }
 437         return physIfaces;
 438     }
 439
 440     private Optional<IpPrefix> resolveIpPrefix(RendererNetworkDomain rendDomain) {
 441         SubnetAugmentRenderer subnetAug = rendDomain.getAugmentation(SubnetAugmentRenderer.class);
 442         if (subnetAug.getSubnet() != null) {
 443             return Optional.of(subnetAug.getSubnet().getIpPrefix());
 444         }
 445         return Optional.absent();
 446     }
 447
 448     private List<MappingEntryBuilder> resolveStaticNatTableEntries(Endpoints endpoints) {
 449         List<MappingEntryBuilder> sNatEntries = new ArrayList<>();
 450         for (AddressEndpointWithLocation addrEp : endpoints.getAddressEndpointWithLocation()) {
 451             if (addrEp.getAugmentation(NatAddressRenderer.class) == null) {
 452                 continue;
 453             }
 454             String endpointIP = resolveEpIpAddressForSnat(addrEp);
 455
 456             if (endpointIP == null) {
 457                 LOG.warn("Endpoints {} IP cannot be null, skipping processing of SNAT", addrEp);
 458                 continue;
 459             }
 460
 461             NatAddressRenderer natAddr = addrEp.getAugmentation(NatAddressRenderer.class);
 462             if (natAddr.getNatAddress() == null && natAddr.getNatAddress().getIpv4Address() == null) {
 463                 LOG.warn("Only Ipv4 SNAT is currently supported. Cannot apply SNAT for [{},{}]", endpointIP,
 464                         natAddr.getNatAddress());
 465                 continue;
 466             }
 467             Optional<MappingEntryBuilder> entry = natManager.resolveSnatEntry(endpointIP, natAddr.getNatAddress()
 468                 .getIpv4Address());
 469             if (entry.isPresent()) {
 470                 sNatEntries.add(entry.get());
 471             }
 472         }
 473         return sNatEntries;
 474     }
 475
 476     private String resolveEpIpAddressForSnat(AddressEndpointWithLocation addrEp) {
 477         LOG.trace("Resolving Ep IP address for SNAT from Address endpoint: {}", addrEp);
 478         if (addrEp.getAddressType().equals(MacAddressType.class)) {
 479             ParentEndpointChoice parentEndpointChoice = addrEp.getParentEndpointChoice();
 480             if (parentEndpointChoice instanceof ParentEndpointCase
 481                 && !((ParentEndpointCase) parentEndpointChoice).getParentEndpoint().isEmpty()) {
 482                 ParentEndpoint parentEndpoint = ((ParentEndpointCase) parentEndpointChoice).getParentEndpoint().get(0);
 483                 if (parentEndpoint.getAddressType().equals(IpPrefixType.class)) {
 484                     String[] ipWithPrefix = parentEndpoint.getAddress().split("/");
 485                     LOG.trace("Resolved Ep IP address for SNAT. Resolved  IP Address: {}", ipWithPrefix[0]);
 486                     return ipWithPrefix[0];
 487                 } else {
 488                     LOG.warn("Endpoint {} Does not have a Parent Ep with IP for SNAT. skipping processing of SNAT",
 489                         addrEp);
 490                     return null;
 491                 }
 492
 493             } else {
 494                 LOG.warn("Endpoint {} Does not contain IP address for SNAT. skipping processing of SNAT", addrEp);
 495                 return null;
 496             }
 497         } else if (addrEp.getAddressType().equals(IpPrefixType.class)) {
 498             String ipAddress = addrEp.getAddress().split("/")[0];
 499             LOG.trace("Resolved Ep IP address for SNAT. Resolved  IP Address: {}", ipAddress);
 500             return ipAddress;
 501         }
 502         return null;
 503     }
 504
 505     @VisibleForTesting
 506     void setTimer(byte time) {
 507         WAIT_FOR_BD_PROCESSING = time;
 508     }
 509
 510     public void syncRouting(PolicyContext policyCtx) {
 511         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 512         if (cfg != null && cfg.getRendererForwarding() != null) {
 513             for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 514                 if (fwd == null) {
 515                     continue;
 516                 }
 517
 518                 List<InstanceIdentifier<PhysicalInterface>>
 519                     physIfacesIid = resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 520                 Map<InstanceIdentifier<Node>, RoutingCommand> routingCommandMap =
 521                     routingManager.createRouting(fwd, physIfacesIid, General.Operations.PUT);
 522
 523                 routingCommandMap.forEach((node, command) -> {
 524                     if (command != null && routingManager.submitRouting(command, node)) {
 525                         LOG.debug("Routing was successfully applied: {}.", command);
 526                     }
 527                 });
 528             }
 529         }
 530     }
 531
 532     public void deleteRouting(PolicyContext policyCtx) {
 533         Configuration cfg = policyCtx.getPolicy().getConfiguration();
 534         if (cfg != null && cfg.getRendererForwarding() != null) {
 535             for (RendererForwardingByTenant fwd : cfg.getRendererForwarding().getRendererForwardingByTenant()) {
 536                 if (fwd == null) {
 537                     continue;
 538                 }
 539
 540                 List<InstanceIdentifier<PhysicalInterface>>
 541                     physIfacesIid = resolvePhysicalInterfacesForNat(fwd.getRendererNetworkDomain());
 542                 Map<InstanceIdentifier<Node>, RoutingCommand> routingCommandMap =
 543                     routingManager.createRouting(fwd, physIfacesIid, General.Operations.DELETE);
 544                 routingCommandMap.forEach((node, command) -> {
 545                     if (command != null && routingManager.submitRouting(command, node)) {
 546                         LOG.debug("Routing was successfully removed: {}.", command);
 547                     }
 548                 });
 549             }
 550         }
 551     }
 552
 553     public void createDhcpRelay(RendererForwarding rendererForwarding,
 554         SetMultimap<String, NodeId> vppNodesByL2Fd) {
 555         for (RendererForwardingByTenant forwardingByTenant : rendererForwarding.getRendererForwardingByTenant()) {
 556             long vni_vrfid = NeutronTenantToVniMapper.getInstance().getVni(forwardingByTenant.getTenantId().getValue());
 557             for (RendererNetworkDomain networkDomain : forwardingByTenant.getRendererNetworkDomain()) {
 558                 org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.has.subnet.Subnet
 559                     subnet = networkDomain.getAugmentation((SubnetAugmentRenderer.class)).getSubnet();
 560                 if (subnet.isIsTenant()) {
 561                     LOG.trace("Creating Dhcp Relay from subnet: {}, vrfid: {}, vppNodesByL2Fd: {}", subnet, vni_vrfid,
 562                         vppNodesByL2Fd);
 563                     dhcpRelayHandler.createIpv4DhcpRelay(vni_vrfid, subnet, vppNodesByL2Fd);
 564                 }
 565             }
 566         }
 567     }
 568
 569     public void deleteDhcpRelay(RendererForwarding rendererForwarding, SetMultimap<String, NodeId> vppNodesByL2Fd) {
 570         for (RendererForwardingByTenant forwardingByTenant : rendererForwarding.getRendererForwardingByTenant()) {
 571             long vni_vrfid = NeutronTenantToVniMapper.getInstance().getVni(forwardingByTenant.getTenantId().getValue());
 572             for (RendererNetworkDomain networkDomain : forwardingByTenant.getRendererNetworkDomain()) {
 573                 org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev170511.has.subnet.Subnet
 574                     subnet = networkDomain.getAugmentation((SubnetAugmentRenderer.class)).getSubnet();
 575                 if (subnet.isIsTenant()) {
 576                     dhcpRelayHandler.deleteIpv4DhcpRelay(vni_vrfid, subnet, vppNodesByL2Fd);
 577                 }
 578             }
 579         }
 580     }
 581 }