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.renderer.ofoverlay.node.OfOverlayNodeListener;
  23 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
  24 import org.opendaylight.groupbasedpolicy.util.IidFactory;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3Builder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3Key;
  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.OfOverlayContext;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3Context;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3ContextBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3Nat;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3NatBuilder;
  35 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  36 import org.opendaylight.yangtools.yang.binding.DataObject;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 import com.google.common.base.Optional;
  42
  43 public class NeutronGbpExternalGatewaysListener implements DataChangeListener, AutoCloseable {
  44
  45     private static final Logger LOG = LoggerFactory.getLogger(NeutronGbpExternalGatewaysListener.class);
  46     private final ListenerRegistration<DataChangeListener> gbpExternalGatewaysListener;
  47     private final DataBroker dataBroker;
  48
  49     public NeutronGbpExternalGatewaysListener(DataBroker dataBroker) {
  50         this.dataBroker = checkNotNull(dataBroker);
  51         gbpExternalGatewaysListener = dataBroker.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  52                 NeutronOvsdbIidFactory.neutronGbpExternalGatewayIidWildcard(), this, DataChangeScope.BASE);
  53
  54         LOG.trace("NeutronGbpMapperListener started");
  55     }
  56
  57     @Override
  58     public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  59
  60         /*
  61          */
  62         for (Entry<InstanceIdentifier<?>, DataObject> entry : change.getCreatedData().entrySet()) {
  63             if (entry.getValue() instanceof ExternalGatewayAsL3Endpoint) {
  64                 ExternalGatewayAsL3Endpoint ExternalGatewayAsL3Endpoint = (ExternalGatewayAsL3Endpoint) entry.getValue();
  65                 processExternalGatewayAsL3Endpoint(ExternalGatewayAsL3Endpoint);
  66             }
  67         }
  68
  69         /*
  70          * Updates
  71          */
  72         for (Entry<InstanceIdentifier<?>, DataObject> entry : change.getUpdatedData().entrySet()) {
  73             if (entry.getValue() instanceof ExternalGatewayAsL3Endpoint) {
  74                 ExternalGatewayAsL3Endpoint ExternalGatewayAsL3Endpoint = (ExternalGatewayAsL3Endpoint) entry.getValue();
  75                 processExternalGatewayAsL3Endpoint(ExternalGatewayAsL3Endpoint);
  76             }
  77         }
  78
  79         /*
  80          * Deletions
  81          */
  82         for (InstanceIdentifier<?> iid : change.getRemovedPaths()) {
  83             /*
  84              * Remove ?
  85              */
  86         }
  87     }
  88
  89     private void processExternalGatewayAsL3Endpoint(ExternalGatewayAsL3Endpoint ExternalGatewayAsL3Endpoint) {
  90         LOG.trace("Received ExternalGatewayAsL3Endpoints notification {}", ExternalGatewayAsL3Endpoint);
  91         ReadWriteTransaction rwTx = dataBroker.newReadWriteTransaction();
  92         EndpointL3Key epL3Key = new EndpointL3Key(ExternalGatewayAsL3Endpoint.getIpAddress(),
  93                 ExternalGatewayAsL3Endpoint.getL3Context());
  94         InstanceIdentifier<EndpointL3> epL3Iid = IidFactory.l3EndpointIid(epL3Key.getL3Context(),
  95                 epL3Key.getIpAddress());
  96         Optional<EndpointL3> optEndpointL3 = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL, epL3Iid, rwTx);
  97
  98         if (optEndpointL3.isPresent()) {
  99             EndpointL3 endpointL3 = optEndpointL3.get();
 100
 101             // Handle Augmentation for location ie Context
 102             OfOverlayL3Context ofL3ContextAug = endpointL3.getAugmentation(OfOverlayL3Context.class);
 103             OfOverlayL3ContextBuilder ofL3ContextAugBuilder;
 104             if (ofL3ContextAug != null) {
 105                  ofL3ContextAugBuilder = new OfOverlayL3ContextBuilder(ofL3ContextAug);
 106             } else {
 107                  ofL3ContextAugBuilder = new OfOverlayL3ContextBuilder();
 108             }
 109             EndpointL3Builder epL3Builder = new EndpointL3Builder(endpointL3).addAugmentation(
 110                     OfOverlayL3Context.class, ofL3ContextAugBuilder.setLocationType(LocationType.External)
 111                         .build());
 112             // Handle Augmentation for NAT.
 113             OfOverlayL3Nat ofL3NatAug = endpointL3.getAugmentation(OfOverlayL3Nat.class);
 114             if (ofL3NatAug != null) {
 115                 epL3Builder.addAugmentation(OfOverlayL3Nat.class, ofL3NatAug);
 116             }
 117             rwTx.put(LogicalDatastoreType.OPERATIONAL, epL3Iid, epL3Builder.build());
 118             DataStoreHelper.submitToDs(rwTx);
 119         } else {
 120             LOG.error("External Gateway {} does not exist in Endpoint repository", epL3Key);
 121             return;
 122         }
 123     }
 124
 125     @Override
 126     public void close() throws Exception {
 127         gbpExternalGatewaysListener.close();
 128     }
 129
 130 }