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.Nullable;\r
  15 \r
  16 import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;\r
  17 import org.opendaylight.controller.md.sal.binding.api.DataBroker;\r
  18 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;\r
  19 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;\r
  20 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;\r
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;\r
  22 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;\r
  23 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;\r
  24 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;\r
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;\r
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;\r
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;\r
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;\r
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.UniqueId;\r
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.Mappings;\r
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.GbpByNeutronMappings;\r
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.BaseEndpointsByPorts;\r
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.base.endpoints.by.ports.BaseEndpointByPort;\r
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.base.endpoints.by.ports.BaseEndpointByPortKey;\r
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.Config;\r
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.ExcludeFromPolicy;\r
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.ExcludeFromPolicyBuilder;\r
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.LoopbackCase;\r
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.LoopbackCaseBuilder;\r
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.TapCase;\r
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.TapCaseBuilder;\r
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425._interface.attributes._interface.type.choice.VhostUserCaseBuilder;\r
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpoint;\r
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpointBuilder;\r
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpointKey;\r
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.binding.rev150712.PortBindingExtension;\r
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.binding.rev150712.binding.attributes.VifDetails;\r
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.Routers;\r
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.routers.Router;\r
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.routers.RouterKey;\r
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.port.attributes.FixedIps;\r
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.Ports;\r
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;\r
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.PortKey;\r
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;\r
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;\r
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;\r
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.SubnetKey;\r
  59 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;\r
  60 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;\r
  61 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;\r
  62 import org.slf4j.Logger;\r
  63 import org.slf4j.LoggerFactory;\r
  64 \r
  65 import com.google.common.annotations.VisibleForTesting;\r
  66 import com.google.common.base.Optional;\r
  67 import com.google.common.base.Strings;\r
  68 \r
  69 import javax.annotation.Nonnull;\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             TapCase tapCase = new TapCaseBuilder().setPhysicalAddress(new PhysAddress(port.getMacAddress().getValue()))\r
 258                 .setName(createPortName(port.getUuid()))\r
 259                 .build();\r
 260             vppEpBuilder.setInterfaceTypeChoice(tapCase);\r
 261         } else if (isValidQRouterPort(port)) {\r
 262             TapCase tapCase = new TapCaseBuilder().setPhysicalAddress(new PhysAddress(port.getMacAddress().getValue()))\r
 263                     .setName(createQRouterPortName(port.getUuid()))\r
 264                     .build();\r
 265             vppEpBuilder.setInterfaceTypeChoice(tapCase);\r
 266             vppEpBuilder.addAugmentation(ExcludeFromPolicy.class,\r
 267                     new ExcludeFromPolicyBuilder().setExcludeFromPolicy(true).build());\r
 268         } else if (isValidVppRouterPort(port)) {\r
 269             if (!DEFAULT_NODE.equals(routingNode.getValue())) {\r
 270                 LOG.warn(\r
 271                         "Host-id changed by ODL for port {}. This is a supplementary workaround for choosing a routing node.",\r
 272                         port);\r
 273                 vppEpBuilder.setVppNodeId(routingNode);\r
 274             } else if (port.getDeviceId() != null) {\r
 275                 LOG.debug("Resolving host-id for unbound router port {}", port.getUuid());\r
 276                 ReadOnlyTransaction readTx = dataBroker.newReadOnlyTransaction();\r
 277                 Optional<Ports> optPorts = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,\r
 278                         InstanceIdentifier.builder(Neutron.class).child(Ports.class).build(), readTx);\r
 279                 readTx.close();\r
 280                 if (optPorts.isPresent() && optPorts.get().getPort() != null) {\r
 281                     java.util.Optional<Port> optPortOnTheSameNode = optPorts.get()\r
 282                         .getPort()\r
 283                         .stream()\r
 284                         .filter(p -> !p.getUuid().equals(port.getUuid()))\r
 285                         .filter(p -> p.getAugmentation(PortBindingExtension.class) != null)\r
 286                         .filter(p -> p.getDeviceOwner().contains(DHCP_OWNER))\r
 287                         .findFirst();\r
 288                     if (optPortOnTheSameNode.isPresent()) {\r
 289                         PortBindingExtension binding =\r
 290                                 optPortOnTheSameNode.get().getAugmentation(PortBindingExtension.class);\r
 291                         if (binding != null && binding.getHostId() != null) {\r
 292                             vppEpBuilder.setVppNodeId(new NodeId(binding.getHostId()));\r
 293                         } else {\r
 294                             LOG.warn("Cannot resolve location of router-port {}", port.getUuid());\r
 295                             return null;\r
 296                         }\r
 297                     }\r
 298                 }\r
 299             }\r
 300             vppEpBuilder.addAugmentation(ExcludeFromPolicy.class,\r
 301                     new ExcludeFromPolicyBuilder().setExcludeFromPolicy(true).build());\r
 302             vppEpBuilder.setInterfaceTypeChoice(getLoopbackCase(port));\r
 303         }\r
 304         return vppEpBuilder.build();\r
 305     }\r
 306 \r
 307     private String getSocketFromPortBinding(@Nonnull PortBindingExtension portBindingExtension) {\r
 308         List<VifDetails> vifDetails = nullToEmpty(portBindingExtension.getVifDetails());\r
 309 \r
 310         for (VifDetails detail : vifDetails) {\r
 311             if (VHOST_SOCKET_KEY.equalsIgnoreCase(detail.getDetailsKey())) {\r
 312                 return detail.getValue();\r
 313             }\r
 314         }\r
 315         return null;\r
 316     }\r
 317 \r
 318     private LoopbackCase getLoopbackCase(Port port) {\r
 319         LoopbackCaseBuilder loopbackCase = new LoopbackCaseBuilder()\r
 320             .setPhysAddress(new PhysAddress(port.getMacAddress().getValue()));\r
 321         Optional<FixedIps> fixedIpsOptional = resolveFirstFixedIps(port);\r
 322         if(fixedIpsOptional.isPresent() && fixedIpsOptional.get().getIpAddress() != null){\r
 323             loopbackCase.setIpAddress(fixedIpsOptional.get().getIpAddress());\r
 324             ReadOnlyTransaction rTx = transactionChain.newReadOnlyTransaction();\r
 325             Optional<Subnet> subnetOptional =\r
 326                 DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,\r
 327                     InstanceIdentifier.builder(Neutron.class)\r
 328                         .child(Subnets.class)\r
 329                         .child(Subnet.class, new SubnetKey(fixedIpsOptional.get().getSubnetId()))\r
 330                         .build(), rTx);\r
 331             if (subnetOptional.isPresent()) {\r
 332                 Ipv4Prefix ipv4Prefix = subnetOptional.get().getCidr().getIpv4Prefix();\r
 333                 loopbackCase.setIpPrefix(new IpPrefix(ipv4Prefix));\r
 334             } else {\r
 335                 LOG.warn("IpPrefix for loopback port: {} was not set.", port);\r
 336             }\r
 337             if (loopbackCase.getIpAddress() != null && loopbackCase.getIpPrefix() != null) {\r
 338                 loopbackCase.setBvi(true);\r
 339                 LOG.trace("Creating loopback BVI interface: {} for VPP router port: {}.", loopbackCase, port);\r
 340             }\r
 341 \r
 342         } else {\r
 343             LOG.warn("IpAddress for loopback port: {} was not set.", port);\r
 344         }\r
 345         return loopbackCase.build();\r
 346     }\r
 347 \r
 348     /**\r
 349      * If Qrouter (L3 Agent) is in use, any of Openstack neutron routers is not going be mapped\r
 350      * to ODL neutron.\r
 351      */\r
 352     private boolean isValidQRouterPort(Port port) {\r
 353         Optional<Router> optRouter = getRouterOptional(port);\r
 354         return !optRouter.isPresent() && port.getDeviceOwner().contains(ROUTER_OWNER)\r
 355                 && port.getMacAddress() != null;\r
 356     }\r
 357 \r
 358     private boolean isValidVppRouterPort(Port port) {\r
 359         Optional<Router> optRouter = getRouterOptional(port);\r
 360         return optRouter.isPresent() && port.getDeviceOwner().contains(ROUTER_OWNER)\r
 361             && port.getMacAddress() != null;\r
 362     }\r
 363 \r
 364     private Optional<Router> getRouterOptional(Port port) {\r
 365         if (Strings.isNullOrEmpty(port.getDeviceId())) {\r
 366             return Optional.absent();\r
 367         }\r
 368         RouterKey routerKey = null;\r
 369         try {\r
 370             routerKey = new RouterKey(new Uuid(port.getDeviceId()));\r
 371         } catch (IllegalArgumentException e) {\r
 372             // port.getDeviceId() may not match Uuid.PATTERN_CONSTANTS\r
 373             return Optional.absent();\r
 374         }\r
 375         ReadOnlyTransaction rTx = transactionChain.newReadOnlyTransaction();\r
 376         InstanceIdentifier<Router> routerIid = InstanceIdentifier.builder(Neutron.class)\r
 377             .child(Routers.class)\r
 378             .child(Router.class, routerKey)\r
 379             .build();\r
 380         Optional<Router> optRouter = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION, routerIid, rTx);\r
 381         rTx.close();\r
 382         return optRouter;\r
 383     }\r
 384 \r
 385     public static Optional<FixedIps> resolveFirstFixedIps(Port port) {\r
 386         List<FixedIps> fixedIps = port.getFixedIps();\r
 387         if (fixedIps != null && !fixedIps.isEmpty()) {\r
 388             return Optional.of(fixedIps.get(0));\r
 389         }\r
 390         return Optional.absent();\r
 391     }\r
 392 \r
 393     private String createPortName(Uuid portUuid) {\r
 394         String tapPortName;\r
 395         String uuid = portUuid.getValue();\r
 396         if (uuid != null && uuid.length() >= 12) {\r
 397             tapPortName = TAP_PORT_NAME_PREFIX + uuid.substring(0, 11);\r
 398         } else {\r
 399             tapPortName = TAP_PORT_NAME_PREFIX + uuid;\r
 400         }\r
 401         return tapPortName;\r
 402     }\r
 403 \r
 404     private String createQRouterPortName(Uuid portUuid) {\r
 405         String tapPortName;\r
 406         String uuid = portUuid.getValue();\r
 407         if (uuid != null && uuid.length() >= 12) {\r
 408             tapPortName = RT_PORT_NAME_PREFIX + uuid.substring(0, 11);\r
 409         } else {\r
 410             tapPortName = RT_PORT_NAME_PREFIX + uuid;\r
 411         }\r
 412         return tapPortName;\r
 413     }\r
 414 \r
 415     private InstanceIdentifier<VppEndpoint> createVppEndpointIid(VppEndpointKey vppEpKey) {\r
 416         return InstanceIdentifier.builder(Config.class).child(VppEndpoint.class, vppEpKey).build();\r
 417     }\r
 418 \r
 419     private InstanceIdentifier<BaseEndpointByPort> createBaseEpByPortIid(Uuid uuid) {\r
 420         return createBaseEpByPortIid(new UniqueId(uuid.getValue()));\r
 421     }\r
 422 \r
 423     private InstanceIdentifier<BaseEndpointByPort> createBaseEpByPortIid(UniqueId uuid) {\r
 424         return InstanceIdentifier.builder(Mappings.class)\r
 425             .child(GbpByNeutronMappings.class)\r
 426             .child(BaseEndpointsByPorts.class)\r
 427             .child(BaseEndpointByPort.class, new BaseEndpointByPortKey(uuid))\r
 428             .build();\r
 429     }\r
 430 \r
 431     InstanceIdentifier<Port> createWildcartedPortIid() {\r
 432         return portsIid().child(Port.class).build();\r
 433     }\r
 434 \r
 435     private InstanceIdentifier<Port> createPortIid(UniqueId uuid) {\r
 436         return portsIid().child(Port.class, new PortKey(new Uuid(uuid.getValue()))).build();\r
 437     }\r
 438 \r
 439     private InstanceIdentifierBuilder<Ports> portsIid() {\r
 440         return InstanceIdentifier.builder(Neutron.class).child(Ports.class);\r
 441     }\r
 442 \r
 443     @Override\r
 444     public void onTransactionChainFailed(TransactionChain<?, ?> chain, AsyncTransaction<?, ?> transaction,\r
 445             Throwable cause) {\r
 446         LOG.error("Transaction chain failed. {} \nTransaction which caused the chain to fail {}", cause.getMessage(),\r
 447                 transaction, cause);\r
 448         transactionChain.close();\r
 449         transactionChain = dataBroker.createTransactionChain(this);\r
 450     }\r
 451 \r
 452     @Override\r
 453     public void onTransactionChainSuccessful(TransactionChain<?, ?> chain) {\r
 454         LOG.trace("Transaction chain was successful. {}", chain);\r
 455     }\r
 456 \r
 457     private <T> List<T> nullToEmpty(@Nullable List<T> list) {\r
 458         return list == null ? Collections.emptyList() : list;\r
 459     }\r
 460 }\r