neutron-vpp-mapper/src/main/java/org/opendaylight/groupbasedpolicy/neutron/vpp/mapper/processors/PortHandler.java

   1 /*\r
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.\r
   3  *\r
   4  * This program and the accompanying materials are made available under the\r
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,\r
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html\r
   7  */\r
   8 \r
   9 package org.opendaylight.groupbasedpolicy.neutron.vpp.mapper.processors;\r
  10 \r
  11 import java.util.Collections;\r
  12 import java.util.List;\r
  13 \r
  14 import javax.annotation.Nonnull;\r
  15 import javax.annotation.Nullable;\r
  16 \r
  17 import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;\r
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;\r
  19 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;\r
  20 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;\r
  21 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;\r
  22 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;\r
  23 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;\r
  24 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;\r
  25 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;\r
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;\r
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;\r
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;\r
  29 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;\r
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;\r
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.UniqueId;\r
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.Mappings;\r
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.GbpByNeutronMappings;\r
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.BaseEndpointsByPorts;\r
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.base.endpoints.by.ports.BaseEndpointByPort;\r
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.base.endpoints.by.ports.BaseEndpointByPortKey;\r
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.Config;\r
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.ExcludeFromPolicy;\r
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.ExcludeFromPolicyBuilder;\r
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.LoopbackCase;\r
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.LoopbackCaseBuilder;\r
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.TapCase;\r
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.TapCaseBuilder;\r
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.VhostUserCaseBuilder;\r
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpoint;\r
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpointBuilder;\r
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpointKey;\r
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.binding.rev150712.PortBindingExtension;\r
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.binding.rev150712.binding.attributes.VifDetails;\r
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.Routers;\r
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.routers.Router;\r
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.routers.RouterKey;\r
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.port.attributes.FixedIps;\r
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.Ports;\r
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;\r
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.PortKey;\r
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;\r
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;\r
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;\r
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.SubnetKey;\r
  61 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;\r
  62 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;\r
  63 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;\r
  64 import org.slf4j.Logger;\r
  65 import org.slf4j.LoggerFactory;\r
  66 \r
  67 import com.google.common.annotations.VisibleForTesting;\r
  68 import com.google.common.base.Optional;\r
  69 import com.google.common.base.Strings;\r
  70 public class PortHandler implements TransactionChainListener {\r
  71 \r
  72     private static final Logger LOG = LoggerFactory.getLogger(PortHandler.class);\r
  73 \r
  74     private static final String COMPUTE_OWNER = "compute";\r
  75     private static final String DHCP_OWNER = "dhcp";\r
  76     static final String ROUTER_OWNER = "network:router_interface";\r
  77     private static final String[] SUPPORTED_DEVICE_OWNERS = {COMPUTE_OWNER, DHCP_OWNER, ROUTER_OWNER};\r
  78     private static final String VHOST_USER = "vhostuser";\r
  79     private static final String UNBOUND = "unbound";\r
  80     private static final String VPP_INTERFACE_NAME_PREFIX = "neutron_port_";\r
  81     private static final String TAP_PORT_NAME_PREFIX = "tap";\r
  82     private static final String RT_PORT_NAME_PREFIX = "qr-";\r
  83     private static final String VHOST_SOCKET_KEY = "vhostuser_socket";\r
  84     static final String DEFAULT_NODE = "default";\r
  85 \r
  86     private final NodeId routingNode;\r
  87     private BindingTransactionChain transactionChain;\r
  88     private DataBroker dataBroker;\r
  89 \r
  90     PortHandler(DataBroker dataBroker, NodeId routingNodeId) {\r
  91         this.dataBroker = dataBroker;\r
  92         this.routingNode = routingNodeId;\r
  93         transactionChain = this.dataBroker.createTransactionChain(this);\r
  94     }\r
  95 \r
  96     void processCreated(Port port) {\r
  97         ReadOnlyTransaction rTx = transactionChain.newReadOnlyTransaction();\r
  98         Optional<BaseEndpointByPort> optBaseEpByPort = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL,\r
  99                 createBaseEpByPortIid(port.getUuid()), rTx);\r
 100         rTx.close();\r
 101         if (!optBaseEpByPort.isPresent()) {\r
 102             return;\r
 103         }\r
 104         processCreatedData(port, optBaseEpByPort.get());\r
 105     }\r
 106 \r
 107     void processCreated(BaseEndpointByPort bebp) {\r
 108         ReadOnlyTransaction rTx = transactionChain.newReadOnlyTransaction();\r
 109         Optional<Port> optPort = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,\r
 110                 createPortIid(bebp.getPortId()), rTx);\r
 111         rTx.close();\r
 112         if (!optPort.isPresent()) {\r
 113             return;\r
 114         }\r
 115         processCreatedData(optPort.get(), bebp);\r
 116     }\r
 117 \r
 118     @VisibleForTesting\r
 119     void processCreatedData(Port port, BaseEndpointByPort bebp) {\r
 120         if (isValidVhostUser(port)\r
 121                 // this is a hack for vpp router port\r
 122                 // Openstack does not send binding details yet\r
 123                 || isValidVppRouterPort(port)) {\r
 124             VppEndpoint vppEp = buildVppEndpoint(port, bebp);\r
 125             if (vppEp == null) {\r
 126                 LOG.warn("Cannot create vpp-endpoint from neutron port {}", port);\r
 127                 return;\r
 128             }\r
 129             writeVppEndpoint(createVppEndpointIid(vppEp.getKey()), vppEp);\r
 130             LOG.debug("Created vpp-endpoint {}", vppEp);\r
 131         }\r
 132     }\r
 133 \r
 134     private boolean isValidVhostUser(Port port) {\r
 135         PortBindingExtension portBindingExt = port.getAugmentation(PortBindingExtension.class);\r
 136         if (portBindingExt != null) {\r
 137             String vifType = portBindingExt.getVifType();\r
 138             String deviceOwner = port.getDeviceOwner();\r
 139             if (vifType != null && deviceOwner != null) {\r
 140                 if (vifType.contains(VHOST_USER)) {\r
 141                     for (String supportedDeviceOwner : SUPPORTED_DEVICE_OWNERS) {\r
 142                         if (deviceOwner.contains(supportedDeviceOwner)) {\r
 143                             return true;\r
 144                         }\r
 145                     }\r
 146                 }\r
 147             }\r
 148         }\r
 149         return false;\r
 150     }\r
 151 \r
 152     void processUpdated(Port original, Port delta) {\r
 153         if (!isUpdateNeeded(original, delta)){\r
 154             LOG.trace("Port update skipped, port didn`t change. before {}, after: {}" , original, delta);\r
 155             return;\r
 156         }\r
 157 \r
 158         LOG.trace("Updating port before: {}, after: {}" , original, delta);\r
 159         if (isValidVhostUser(original)) {\r
 160             ReadOnlyTransaction rTx = transactionChain.newReadOnlyTransaction();\r
 161             Optional<BaseEndpointByPort> optBebp = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL,\r
 162                     createBaseEpByPortIid(original.getUuid()), rTx);\r
 163             rTx.close();\r
 164             if (!optBebp.isPresent()) {\r
 165                 return;\r
 166             }\r
 167             LOG.trace("Updating port - deleting old port {}" , optBebp.get().getPortId());\r
 168             processDeleted(optBebp.get());\r
 169         }\r
 170         LOG.trace("Updating port - creating new port {}" , delta.getUuid());\r
 171         processCreated(delta);\r
 172     }\r
 173 \r
 174     private boolean isUpdateNeeded(final Port oldPort, final Port newPort) {\r
 175         //TODO fix this to better support update of ports for VPP\r
 176         final PortBindingExtension oldPortAugmentation = oldPort.getAugmentation(PortBindingExtension.class);\r
 177         final PortBindingExtension newPortAugmentation = newPort.getAugmentation(PortBindingExtension.class);\r
 178 \r
 179         if (newPortAugmentation == null) {\r
 180             LOG.trace("Port {} is no longer a vhost type port, updating port...");\r
 181             return true;\r
 182         }\r
 183 \r
 184         final String oldDeviceOwner = oldPort.getDeviceOwner();\r
 185         final String oldVifType = oldPortAugmentation.getVifType();\r
 186         final String newDeviceOwner = newPort.getDeviceOwner();\r
 187         final String newVifType = newPortAugmentation.getVifType();\r
 188 \r
 189         // TODO potential bug here\r
 190         // Temporary change for Openstack Mitaka: If old neutron-binding:vif-type is vhost, new one is unbound and\r
 191         // device owner is ROUTER_OWNER, skip update. Openstack (or ml2) sometimes sends router update messages in\r
 192         // incorrect order which causes unwanted port removal\r
 193         if (oldVifType.equals(VHOST_USER) && newVifType.equals(UNBOUND) && oldDeviceOwner != null &&\r
 194                 ROUTER_OWNER.equals(oldDeviceOwner) && ROUTER_OWNER.equals(newDeviceOwner)) {\r
 195             LOG.warn("Port vif-type was updated from vhost to unbound. This update is currently disabled and will be skipped");\r
 196             return false;\r
 197         }\r
 198 \r
 199         if (newVifType != null && !newVifType.equals(oldVifType)) {\r
 200             LOG.trace("Vif type changed, old: {} new {}", oldVifType, newVifType);\r
 201             return true;\r
 202         }\r
 203 \r
 204         final List<VifDetails> vifDetails = oldPortAugmentation.getVifDetails();\r
 205 \r
 206         if (!oldPortAugmentation.getHostId().equals(newPortAugmentation.getHostId()) ||\r
 207             nullToEmpty(vifDetails).size() != nullToEmpty(newPortAugmentation.getVifDetails()).size()) {\r
 208             return true;\r
 209         }\r
 210 \r
 211         for (VifDetails vifDetail : nullToEmpty(vifDetails)) {\r
 212             //check if vhostuser_socket, vhostuser_mode and port_filter are changed\r
 213             if (!newPortAugmentation.getVifDetails().contains(vifDetail))\r
 214                 return true;\r
 215         }\r
 216         return false;\r
 217     }\r
 218 \r
 219     void processDeleted(BaseEndpointByPort bebp) {\r
 220         LOG.trace("Deleting vpp-endpoint by BaseEndpointByPort {}" , bebp);\r
 221         VppEndpointKey vppEpKey = new VppEndpointKey(bebp.getAddress(), bebp.getAddressType(), bebp.getContextId(),\r
 222                 bebp.getContextType());\r
 223         InstanceIdentifier<VppEndpoint> vppEpIid = createVppEndpointIid(vppEpKey);\r
 224         ReadOnlyTransaction rTx = transactionChain.newReadOnlyTransaction();\r
 225         Optional<VppEndpoint> readVppEp = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION, vppEpIid, rTx);\r
 226         rTx.close();\r
 227         if (readVppEp.isPresent()) {\r
 228             writeVppEndpoint(vppEpIid, null);\r
 229             LOG.debug("Deleted vpp-endpoint {}", vppEpKey);\r
 230         }\r
 231     }\r
 232 \r
 233     private synchronized void writeVppEndpoint(InstanceIdentifier<VppEndpoint> vppEpIid, VppEndpoint vppEp) {\r
 234         WriteTransaction wTx = transactionChain.newWriteOnlyTransaction();\r
 235         if (vppEp != null) {\r
 236             wTx.put(LogicalDatastoreType.CONFIGURATION, vppEpIid, vppEp, true);\r
 237         } else {\r
 238             wTx.delete(LogicalDatastoreType.CONFIGURATION, vppEpIid);\r
 239         }\r
 240         wTx.submit();\r
 241     }\r
 242 \r
 243     @VisibleForTesting\r
 244     VppEndpoint buildVppEndpoint(Port port, BaseEndpointByPort bebp) {\r
 245         PortBindingExtension portBinding = port.getAugmentation(PortBindingExtension.class);\r
 246         VppEndpointBuilder vppEpBuilder = new VppEndpointBuilder().setDescription("neutron port")\r
 247             .setContextId(bebp.getContextId())\r
 248             .setContextType(bebp.getContextType())\r
 249             .setAddress(bebp.getAddress())\r
 250             .setAddressType(bebp.getAddressType())\r
 251             .setVppInterfaceName(VPP_INTERFACE_NAME_PREFIX + bebp.getPortId().getValue())\r
 252             .setVppNodeId(new NodeId(portBinding.getHostId()));\r
 253         if (port.getDeviceOwner().contains(COMPUTE_OWNER)) {\r
 254             vppEpBuilder.setInterfaceTypeChoice(\r
 255                 new VhostUserCaseBuilder().setSocket(getSocketFromPortBinding(portBinding)).build());\r
 256         } else if (port.getDeviceOwner().contains(DHCP_OWNER) && port.getMacAddress() != null) {\r
 257             IpAddress dhcpServerIpAddress = port.getFixedIps().stream().findFirst().isPresent() ?\r
 258                 port.getFixedIps().stream().findFirst().get().getIpAddress() : null;\r
 259             TapCase tapCase = new TapCaseBuilder().setPhysicalAddress(new PhysAddress(port.getMacAddress().getValue()))\r
 260                 .setName(createPortName(port.getUuid()))\r
 261                 .setDhcpServerAddress(dhcpServerIpAddress)\r
 262                 .build();\r
 263             vppEpBuilder.setInterfaceTypeChoice(tapCase);\r
 264         } else if (isValidQRouterPort(port)) {\r
 265             TapCase tapCase = new TapCaseBuilder().setPhysicalAddress(new PhysAddress(port.getMacAddress().getValue()))\r
 266                     .setName(createQRouterPortName(port.getUuid()))\r
 267                     .build();\r
 268             vppEpBuilder.setInterfaceTypeChoice(tapCase);\r
 269             vppEpBuilder.addAugmentation(ExcludeFromPolicy.class,\r
 270                     new ExcludeFromPolicyBuilder().setExcludeFromPolicy(true).build());\r
 271         } else if (isValidVppRouterPort(port)) {\r
 272             if (!DEFAULT_NODE.equals(routingNode.getValue())) {\r
 273                 LOG.warn(\r
 274                         "Host-id changed by ODL for port {}. This is a supplementary workaround for choosing a routing node.",\r
 275                         port);\r
 276                 vppEpBuilder.setVppNodeId(routingNode);\r
 277             } else if (port.getDeviceId() != null) {\r
 278                 LOG.debug("Resolving host-id for unbound router port {}", port.getUuid());\r
 279                 ReadOnlyTransaction readTx = dataBroker.newReadOnlyTransaction();\r
 280                 Optional<Ports> optPorts = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,\r
 281                         InstanceIdentifier.builder(Neutron.class).child(Ports.class).build(), readTx);\r
 282                 readTx.close();\r
 283                 if (optPorts.isPresent() && optPorts.get().getPort() != null) {\r
 284                     java.util.Optional<Port> optPortOnTheSameNode = optPorts.get()\r
 285                         .getPort()\r
 286                         .stream()\r
 287                         .filter(p -> !p.getUuid().equals(port.getUuid()))\r
 288                         .filter(p -> p.getAugmentation(PortBindingExtension.class) != null)\r
 289                         .filter(p -> p.getDeviceOwner().contains(DHCP_OWNER))\r
 290                         .findFirst();\r
 291                     if (optPortOnTheSameNode.isPresent()) {\r
 292                         PortBindingExtension binding =\r
 293                                 optPortOnTheSameNode.get().getAugmentation(PortBindingExtension.class);\r
 294                         if (binding != null && binding.getHostId() != null) {\r
 295                             vppEpBuilder.setVppNodeId(new NodeId(binding.getHostId()));\r
 296                         } else {\r
 297                             LOG.warn("Cannot resolve location of router-port {}", port.getUuid());\r
 298                             return null;\r
 299                         }\r
 300                     }\r
 301                 }\r
 302             }\r
 303             vppEpBuilder.addAugmentation(ExcludeFromPolicy.class,\r
 304                     new ExcludeFromPolicyBuilder().setExcludeFromPolicy(true).build());\r
 305             vppEpBuilder.setInterfaceTypeChoice(getLoopbackCase(port));\r
 306         }\r
 307         return vppEpBuilder.build();\r
 308     }\r
 309 \r
 310     private String getSocketFromPortBinding(@Nonnull PortBindingExtension portBindingExtension) {\r
 311         List<VifDetails> vifDetails = nullToEmpty(portBindingExtension.getVifDetails());\r
 312 \r
 313         for (VifDetails detail : vifDetails) {\r
 314             if (VHOST_SOCKET_KEY.equalsIgnoreCase(detail.getDetailsKey())) {\r
 315                 return detail.getValue();\r
 316             }\r
 317         }\r
 318         return null;\r
 319     }\r
 320 \r
 321     private LoopbackCase getLoopbackCase(Port port) {\r
 322         LoopbackCaseBuilder loopbackCase = new LoopbackCaseBuilder()\r
 323             .setPhysAddress(new PhysAddress(port.getMacAddress().getValue()));\r
 324         Optional<FixedIps> fixedIpsOptional = resolveFirstFixedIps(port);\r
 325         if(fixedIpsOptional.isPresent() && fixedIpsOptional.get().getIpAddress() != null){\r
 326             loopbackCase.setIpAddress(fixedIpsOptional.get().getIpAddress());\r
 327             ReadOnlyTransaction rTx = transactionChain.newReadOnlyTransaction();\r
 328             Optional<Subnet> subnetOptional =\r
 329                 DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,\r
 330                     InstanceIdentifier.builder(Neutron.class)\r
 331                         .child(Subnets.class)\r
 332                         .child(Subnet.class, new SubnetKey(fixedIpsOptional.get().getSubnetId()))\r
 333                         .build(), rTx);\r
 334             if (subnetOptional.isPresent()) {\r
 335                 Ipv4Prefix ipv4Prefix = subnetOptional.get().getCidr().getIpv4Prefix();\r
 336                 loopbackCase.setIpPrefix(new IpPrefix(ipv4Prefix));\r
 337             } else {\r
 338                 LOG.warn("IpPrefix for loopback port: {} was not set.", port);\r
 339             }\r
 340             if (loopbackCase.getIpAddress() != null && loopbackCase.getIpPrefix() != null) {\r
 341                 loopbackCase.setBvi(true);\r
 342                 LOG.trace("Creating loopback BVI interface: {} for VPP router port: {}.", loopbackCase, port);\r
 343             }\r
 344 \r
 345         } else {\r
 346             LOG.warn("IpAddress for loopback port: {} was not set.", port);\r
 347         }\r
 348         return loopbackCase.build();\r
 349     }\r
 350 \r
 351     /**\r
 352      * If Qrouter (L3 Agent) is in use, any of Openstack neutron routers is not going be mapped\r
 353      * to ODL neutron.\r
 354      */\r
 355     private boolean isValidQRouterPort(Port port) {\r
 356         Optional<Router> optRouter = getRouterOptional(port);\r
 357         return !optRouter.isPresent() && port.getDeviceOwner().contains(ROUTER_OWNER)\r
 358                 && port.getMacAddress() != null;\r
 359     }\r
 360 \r
 361     private boolean isValidVppRouterPort(Port port) {\r
 362         Optional<Router> optRouter = getRouterOptional(port);\r
 363         return optRouter.isPresent() && port.getDeviceOwner().contains(ROUTER_OWNER)\r
 364             && port.getMacAddress() != null;\r
 365     }\r
 366 \r
 367     private Optional<Router> getRouterOptional(Port port) {\r
 368         if (Strings.isNullOrEmpty(port.getDeviceId())) {\r
 369             return Optional.absent();\r
 370         }\r
 371         RouterKey routerKey = null;\r
 372         try {\r
 373             routerKey = new RouterKey(new Uuid(port.getDeviceId()));\r
 374         } catch (IllegalArgumentException e) {\r
 375             // port.getDeviceId() may not match Uuid.PATTERN_CONSTANTS\r
 376             return Optional.absent();\r
 377         }\r
 378         ReadOnlyTransaction rTx = transactionChain.newReadOnlyTransaction();\r
 379         InstanceIdentifier<Router> routerIid = InstanceIdentifier.builder(Neutron.class)\r
 380             .child(Routers.class)\r
 381             .child(Router.class, routerKey)\r
 382             .build();\r
 383         Optional<Router> optRouter = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION, routerIid, rTx);\r
 384         rTx.close();\r
 385         return optRouter;\r
 386     }\r
 387 \r
 388     public static Optional<FixedIps> resolveFirstFixedIps(Port port) {\r
 389         List<FixedIps> fixedIps = port.getFixedIps();\r
 390         if (fixedIps != null && !fixedIps.isEmpty()) {\r
 391             return Optional.of(fixedIps.get(0));\r
 392         }\r
 393         return Optional.absent();\r
 394     }\r
 395 \r
 396     private String createPortName(Uuid portUuid) {\r
 397         String tapPortName;\r
 398         String uuid = portUuid.getValue();\r
 399         if (uuid != null && uuid.length() >= 12) {\r
 400             tapPortName = TAP_PORT_NAME_PREFIX + uuid.substring(0, 11);\r
 401         } else {\r
 402             tapPortName = TAP_PORT_NAME_PREFIX + uuid;\r
 403         }\r
 404         return tapPortName;\r
 405     }\r
 406 \r
 407     private String createQRouterPortName(Uuid portUuid) {\r
 408         String tapPortName;\r
 409         String uuid = portUuid.getValue();\r
 410         if (uuid != null && uuid.length() >= 12) {\r
 411             tapPortName = RT_PORT_NAME_PREFIX + uuid.substring(0, 11);\r
 412         } else {\r
 413             tapPortName = RT_PORT_NAME_PREFIX + uuid;\r
 414         }\r
 415         return tapPortName;\r
 416     }\r
 417 \r
 418     private InstanceIdentifier<VppEndpoint> createVppEndpointIid(VppEndpointKey vppEpKey) {\r
 419         return InstanceIdentifier.builder(Config.class).child(VppEndpoint.class, vppEpKey).build();\r
 420     }\r
 421 \r
 422     private InstanceIdentifier<BaseEndpointByPort> createBaseEpByPortIid(Uuid uuid) {\r
 423         return createBaseEpByPortIid(new UniqueId(uuid.getValue()));\r
 424     }\r
 425 \r
 426     private InstanceIdentifier<BaseEndpointByPort> createBaseEpByPortIid(UniqueId uuid) {\r
 427         return InstanceIdentifier.builder(Mappings.class)\r
 428             .child(GbpByNeutronMappings.class)\r
 429             .child(BaseEndpointsByPorts.class)\r
 430             .child(BaseEndpointByPort.class, new BaseEndpointByPortKey(uuid))\r
 431             .build();\r
 432     }\r
 433 \r
 434     InstanceIdentifier<Port> createWildcartedPortIid() {\r
 435         return portsIid().child(Port.class).build();\r
 436     }\r
 437 \r
 438     private InstanceIdentifier<Port> createPortIid(UniqueId uuid) {\r
 439         return portsIid().child(Port.class, new PortKey(new Uuid(uuid.getValue()))).build();\r
 440     }\r
 441 \r
 442     private InstanceIdentifierBuilder<Ports> portsIid() {\r
 443         return InstanceIdentifier.builder(Neutron.class).child(Ports.class);\r
 444     }\r
 445 \r
 446     @Override\r
 447     public void onTransactionChainFailed(TransactionChain<?, ?> chain, AsyncTransaction<?, ?> transaction,\r
 448             Throwable cause) {\r
 449         LOG.error("Transaction chain failed. {} \nTransaction which caused the chain to fail {}", cause.getMessage(),\r
 450                 transaction, cause);\r
 451         transactionChain.close();\r
 452         transactionChain = dataBroker.createTransactionChain(this);\r
 453     }\r
 454 \r
 455     @Override\r
 456     public void onTransactionChainSuccessful(TransactionChain<?, ?> chain) {\r
 457         LOG.trace("Transaction chain was successful. {}", chain);\r
 458     }\r
 459 \r
 460     private <T> List<T> nullToEmpty(@Nullable List<T> list) {\r
 461         return list == null ? Collections.emptyList() : list;\r
 462     }\r
 463 }\r