neutron-ovsdb/src/main/java/org/opendaylight/groupbasedpolicy/neutron/ovsdb/NeutronGbpExternalGatewaysListener.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;
  10
  11 import static com.google.common.base.Preconditions.checkNotNull;
  12
  13 import java.util.Map.Entry;
  14
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  17 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  18 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  19 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.groupbasedpolicy.neutron.ovsdb.util.NeutronOvsdbIidFactory;
  22 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
  23 import org.opendaylight.groupbasedpolicy.util.IidFactory;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3Builder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3Key;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.l3endpoint.rev151217.NatAddress;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.neutron.by.gbp.mappings.external.gateways.as.l3.endpoints.ExternalGatewayAsL3Endpoint;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.EndpointLocation.LocationType;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3Context;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3ContextBuilder;
  32 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  33 import org.opendaylight.yangtools.yang.binding.DataObject;
  34 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 import com.google.common.base.Optional;
  39
  40 public class NeutronGbpExternalGatewaysListener implements DataChangeListener, AutoCloseable {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(NeutronGbpExternalGatewaysListener.class);
  43     private final ListenerRegistration<DataChangeListener> gbpExternalGatewaysListener;
  44     private final DataBroker dataBroker;
  45
  46     public NeutronGbpExternalGatewaysListener(DataBroker dataBroker) {
  47         this.dataBroker = checkNotNull(dataBroker);
  48         gbpExternalGatewaysListener = dataBroker.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  49                 NeutronOvsdbIidFactory.neutronGbpExternalGatewayIidWildcard(), this, DataChangeScope.BASE);
  50
  51         LOG.trace("NeutronGbpMapperListener started");
  52     }
  53
  54     @Override
  55     public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  56
  57         /*
  58          */
  59         for (Entry<InstanceIdentifier<?>, DataObject> entry : change.getCreatedData().entrySet()) {
  60             if (entry.getValue() instanceof ExternalGatewayAsL3Endpoint) {
  61                 ExternalGatewayAsL3Endpoint ExternalGatewayAsL3Endpoint = (ExternalGatewayAsL3Endpoint) entry.getValue();
  62                 processExternalGatewayAsL3Endpoint(ExternalGatewayAsL3Endpoint);
  63             }
  64         }
  65
  66         /*
  67          * Updates
  68          */
  69         for (Entry<InstanceIdentifier<?>, DataObject> entry : change.getUpdatedData().entrySet()) {
  70             if (entry.getValue() instanceof ExternalGatewayAsL3Endpoint) {
  71                 ExternalGatewayAsL3Endpoint ExternalGatewayAsL3Endpoint = (ExternalGatewayAsL3Endpoint) entry.getValue();
  72                 processExternalGatewayAsL3Endpoint(ExternalGatewayAsL3Endpoint);
  73             }
  74         }
  75
  76         /*
  77          * Deletions
  78          */
  79         for (InstanceIdentifier<?> iid : change.getRemovedPaths()) {
  80             /*
  81              * Remove ?
  82              */
  83         }
  84     }
  85
  86     private void processExternalGatewayAsL3Endpoint(ExternalGatewayAsL3Endpoint ExternalGatewayAsL3Endpoint) {
  87         LOG.trace("Received ExternalGatewayAsL3Endpoints notification {}", ExternalGatewayAsL3Endpoint);
  88         ReadWriteTransaction rwTx = dataBroker.newReadWriteTransaction();
  89         EndpointL3Key epL3Key = new EndpointL3Key(ExternalGatewayAsL3Endpoint.getIpAddress(),
  90                 ExternalGatewayAsL3Endpoint.getL3Context());
  91         InstanceIdentifier<EndpointL3> epL3Iid = IidFactory.l3EndpointIid(epL3Key.getL3Context(),
  92                 epL3Key.getIpAddress());
  93         Optional<EndpointL3> optEndpointL3 = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL, epL3Iid, rwTx);
  94
  95         if (optEndpointL3.isPresent()) {
  96             EndpointL3 endpointL3 = optEndpointL3.get();
  97
  98             // Handle Augmentation for location ie Context
  99             OfOverlayL3Context ofL3ContextAug = endpointL3.getAugmentation(OfOverlayL3Context.class);
 100             OfOverlayL3ContextBuilder ofL3ContextAugBuilder;
 101             if (ofL3ContextAug != null) {
 102                  ofL3ContextAugBuilder = new OfOverlayL3ContextBuilder(ofL3ContextAug);
 103             } else {
 104                  ofL3ContextAugBuilder = new OfOverlayL3ContextBuilder();
 105             }
 106             EndpointL3Builder epL3Builder = new EndpointL3Builder(endpointL3).addAugmentation(
 107                     OfOverlayL3Context.class, ofL3ContextAugBuilder.setLocationType(LocationType.External)
 108                         .build());
 109             // Handle Augmentation for NAT.
 110             NatAddress ofL3NatAug = endpointL3.getAugmentation(NatAddress.class);
 111             if (ofL3NatAug != null) {
 112                 epL3Builder.addAugmentation(NatAddress.class, ofL3NatAug);
 113             }
 114             rwTx.put(LogicalDatastoreType.OPERATIONAL, epL3Iid, epL3Builder.build());
 115             DataStoreHelper.submitToDs(rwTx);
 116         } else {
 117             LOG.error("External Gateway {} does not exist in Endpoint repository", epL3Key);
 118             return;
 119         }
 120     }
 121
 122     @Override
 123     public void close() throws Exception {
 124         gbpExternalGatewaysListener.close();
 125     }
 126
 127 }