neutron-ovsdb/src/main/java/org/opendaylight/groupbasedpolicy/neutron/ovsdb/util/NeutronHelper.java

   1 /*
   2  * Copyright (c) 2015 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.neutron.ovsdb.util;
  10
  11 import static org.opendaylight.groupbasedpolicy.util.DataStoreHelper.readFromDs;
  12
  13 import com.google.common.base.Optional;
  14
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.UniqueId;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointKey;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.Mappings;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.GbpByNeutronMappings;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.EndpointsByPorts;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.endpoints.by.ports.EndpointByPort;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.endpoints.by.ports.EndpointByPortKey;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26
  27 public class NeutronHelper {
  28
  29     /**
  30      * This looks up the Endpoint L2 key from an
  31      * operational data store kept in neutron-mapper.
  32      *
  33      * @param externalId The neutron port UUID
  34      * @param dataBroker {@link DataBroker} to use for the transaction
  35      * @return {@link EndpointKey} of the matching Endpoint, null if not found
  36      */
  37     public static EndpointKey getEpKeyFromNeutronMapper(UniqueId externalId, DataBroker dataBroker) {
  38
  39         ReadWriteTransaction transaction = dataBroker.newReadWriteTransaction();
  40         InstanceIdentifier<EndpointByPort> iid = InstanceIdentifier.create(Mappings.class)
  41             .child(GbpByNeutronMappings.class)
  42             .child(EndpointsByPorts.class)
  43             .child(EndpointByPort.class, new EndpointByPortKey(externalId));
  44         Optional<EndpointByPort> optionalEp = readFromDs(LogicalDatastoreType.OPERATIONAL, iid, transaction);
  45         if (optionalEp.isPresent()) {
  46             EndpointByPort epByPort = optionalEp.get();
  47             return new EndpointKey(epByPort.getL2Context(), epByPort.getMacAddress());
  48         }
  49         return null;
  50     }
  51
  52 }