openstack/net-virt/src/main/java/org/opendaylight/netvirt/openstack/netvirt/translator/iaware/impl/NeutronRouterChangeListener.java

   1 /*
   2  * Copyright (c) 2015 Brocade Communications 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 package org.opendaylight.netvirt.openstack.netvirt.translator.iaware.impl;
   9
  10 import java.util.ArrayList;
  11 import java.util.HashMap;
  12 import java.util.List;
  13 import java.util.Map;
  14 import java.util.Map.Entry;
  15
  16 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataChangeListener;
  17 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  18 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  19 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  20 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.netvirt.openstack.netvirt.translator.NeutronRouter;
  23 import org.opendaylight.netvirt.openstack.netvirt.translator.NeutronRouter_NetworkReference;
  24 import org.opendaylight.netvirt.openstack.netvirt.translator.Neutron_IPs;
  25 import org.opendaylight.netvirt.openstack.netvirt.translator.iaware.INeutronRouterAware;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.l3.attributes.Routes;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.Routers;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.routers.Router;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.routers.router.external_gateway_info.ExternalFixedIps;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  31 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  32 import org.opendaylight.yangtools.yang.binding.DataObject;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 public class NeutronRouterChangeListener implements ClusteredDataChangeListener, AutoCloseable{
  38     private static final Logger LOG = LoggerFactory.getLogger(NeutronRouterChangeListener.class);
  39
  40     private ListenerRegistration<DataChangeListener> registration;
  41     private DataBroker db;
  42
  43     public NeutronRouterChangeListener(DataBroker db){
  44         this.db = db;
  45         InstanceIdentifier<Router> path = InstanceIdentifier
  46                 .create(Neutron.class)
  47                 .child(Routers.class)
  48                 .child(Router.class);
  49         LOG.debug("Register listener for Neutron Router model data changes");
  50         registration =
  51                 this.db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION, path, this, DataChangeScope.ONE);
  52
  53     }
  54
  55     @Override
  56     public void onDataChanged(
  57             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
  58         LOG.trace("Data changes : {}",changes);
  59
  60         Object[] subscribers = NeutronIAwareUtil.getInstances(INeutronRouterAware.class, this);
  61         createRouter(changes, subscribers);
  62         updateRouter(changes, subscribers);
  63         deleteRouter(changes, subscribers);
  64     }
  65
  66     private void createRouter(
  67             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes,
  68             Object[] subscribers) {
  69         for (Entry<InstanceIdentifier<?>, DataObject> newRouter : changes.getCreatedData().entrySet()) {
  70                 if(newRouter.getValue() instanceof Router){
  71                 NeutronRouter router = fromMd((Router)newRouter.getValue());
  72                 for(Object entry: subscribers){
  73                     INeutronRouterAware subscriber = (INeutronRouterAware)entry;
  74                     subscriber.neutronRouterCreated(router);
  75                 }
  76                 }
  77         }
  78
  79     }
  80
  81     private void updateRouter(
  82             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes,
  83             Object[] subscribers) {
  84         for (Entry<InstanceIdentifier<?>, DataObject> updateRouter : changes.getUpdatedData().entrySet()) {
  85                 if(updateRouter.getValue() instanceof Router){
  86                 NeutronRouter router = fromMd((Router)updateRouter.getValue());
  87                 for(Object entry: subscribers){
  88                     INeutronRouterAware subscriber = (INeutronRouterAware)entry;
  89                     subscriber.neutronRouterUpdated(router);
  90                 }
  91                 }
  92         }
  93     }
  94
  95     private void deleteRouter(
  96             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes,
  97             Object[] subscribers) {
  98         for (InstanceIdentifier<?> deletedRouterPath : changes.getRemovedPaths()) {
  99                 if(deletedRouterPath.getTargetType().equals(Router.class)){
 100                 NeutronRouter router = fromMd((Router)changes.getOriginalData().get(deletedRouterPath));
 101                 for(Object entry: subscribers){
 102                     INeutronRouterAware subscriber = (INeutronRouterAware)entry;
 103                     subscriber.neutronRouterDeleted(router);
 104                 }
 105                 }
 106         }
 107     }
 108
 109     /*
 110      * This method is borrowed from NeutronRouterInterface.java class of Neutron Northbound class.
 111      * We will be utilizing similar code from other classes from the same package of neutron project.
 112      */
 113     private NeutronRouter fromMd(Router router) {
 114         NeutronRouter result = new NeutronRouter();
 115         result.setID(String.valueOf(router.getUuid().getValue()));
 116         result.setName(router.getName());
 117         if (router.getTenantId() != null) {
 118             result.setTenantID(String.valueOf(router.getTenantId().getValue()));
 119         }
 120         result.setAdminStateUp(router.isAdminStateUp());
 121         result.setStatus(router.getStatus());
 122         result.setDistributed(router.isDistributed());
 123         if (router.getGatewayPortId() != null) {
 124             result.setGatewayPortId(String.valueOf(router.getGatewayPortId().getValue()));
 125         }
 126         if (router.getRoutes() != null) {
 127             List<Routes> routes = new ArrayList<>();
 128             for (Routes route : router.getRoutes()) {
 129                 routes.add(route);
 130             }
 131             result.setRoutes(routes);
 132         }
 133
 134         if (router.getExternalGatewayInfo() != null) {
 135             NeutronRouter_NetworkReference extGwInfo = new NeutronRouter_NetworkReference();
 136             extGwInfo.setNetworkID(String.valueOf(router.getExternalGatewayInfo().getExternalNetworkId().getValue()));
 137             extGwInfo.setEnableSNAT(router.getExternalGatewayInfo().isEnableSnat());
 138             if (router.getExternalGatewayInfo().getExternalFixedIps() != null) {
 139                 List<Neutron_IPs> fixedIPs = new ArrayList<>();
 140                 for (ExternalFixedIps mdFixedIP : router.getExternalGatewayInfo().getExternalFixedIps()) {
 141                      Neutron_IPs fixedIP = new Neutron_IPs();
 142                      fixedIP.setSubnetUUID(String.valueOf(mdFixedIP.getSubnetId().getValue()));
 143                      fixedIP.setIpAddress(String.valueOf(mdFixedIP.getIpAddress().getValue()));
 144                      fixedIPs.add(fixedIP);
 145                 }
 146                 extGwInfo.setExternalFixedIPs(fixedIPs);
 147             }
 148             result.setExternalGatewayInfo(extGwInfo);
 149         }
 150
 151         return result;
 152     }
 153
 154     @Override
 155     public void close() throws Exception {
 156         registration.close();
 157     }
 158 }