natservice/impl/src/main/java/org/opendaylight/netvirt/natservice/internal/ExternalSubnetVpnInstanceListener.java

   1 /*
   2  * Copyright (c) 2017 HPE, 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.natservice.internal;
   9
  10 import java.util.Optional;
  11 import javax.annotation.PreDestroy;
  12 import javax.inject.Inject;
  13 import javax.inject.Singleton;
  14 import org.opendaylight.genius.mdsalutil.NwConstants;
  15 import org.opendaylight.infrautils.utils.concurrent.Executors;
  16 import org.opendaylight.mdsal.binding.api.DataBroker;
  17 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  18 import org.opendaylight.netvirt.elanmanager.api.IElanService;
  19 import org.opendaylight.netvirt.vpnmanager.api.IVpnManager;
  20 import org.opendaylight.serviceutils.tools.listener.AbstractAsyncDataTreeChangeListener;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.VpnInstanceToVpnId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.subnets.Subnets;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.subnetmaps.Subnetmap;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 @Singleton
  32 public class ExternalSubnetVpnInstanceListener extends AbstractAsyncDataTreeChangeListener<VpnInstance> {
  33     private static final Logger LOG = LoggerFactory.getLogger(ExternalSubnetVpnInstanceListener.class);
  34     private final DataBroker dataBroker;
  35     private final SNATDefaultRouteProgrammer snatDefaultRouteProgrammer;
  36     private final IElanService elanService;
  37     private final IVpnManager vpnManager;
  38
  39     @Inject
  40     public ExternalSubnetVpnInstanceListener(final DataBroker dataBroker,
  41                      final SNATDefaultRouteProgrammer snatDefaultRouteProgrammer,
  42                      final IElanService elanService, final IVpnManager vpnManager) {
  43         super(dataBroker, LogicalDatastoreType.CONFIGURATION, InstanceIdentifier.create(VpnInstanceToVpnId.class)
  44                 .child(VpnInstance.class),
  45                 Executors.newListeningSingleThreadExecutor("ExternalSubnetVpnInstanceListener", LOG));
  46         this.dataBroker = dataBroker;
  47         this.snatDefaultRouteProgrammer = snatDefaultRouteProgrammer;
  48         this.elanService = elanService;
  49         this.vpnManager = vpnManager;
  50     }
  51
  52     public void init() {
  53         LOG.info("{} init", getClass().getSimpleName());
  54     }
  55
  56     @Override
  57     @PreDestroy
  58     public void close() {
  59         super.close();
  60         Executors.shutdownAndAwaitTermination(getExecutorService());
  61     }
  62
  63     @Override
  64     public void remove(InstanceIdentifier<VpnInstance> key, VpnInstance vpnInstance) {
  65         LOG.trace("remove : External Subnet VPN Instance remove mapping method - key:{}. value={}",
  66                 vpnInstance.key(), vpnInstance);
  67         String possibleExtSubnetUuid = vpnInstance.getVpnInstanceName();
  68         Optional<Subnets> optionalSubnets = NatUtil.getOptionalExternalSubnets(dataBroker,
  69                 new Uuid(possibleExtSubnetUuid));
  70         if (optionalSubnets.isPresent()) {
  71             addOrDelDefaultFibRouteToSNATFlow(vpnInstance, optionalSubnets.get(), NwConstants.DEL_FLOW);
  72             invokeSubnetDeletedFromVpn(possibleExtSubnetUuid);
  73         }
  74     }
  75
  76     @Override
  77     public void update(InstanceIdentifier<VpnInstance> key, VpnInstance vpnInstanceOrig,
  78             VpnInstance vpnInstanceNew) {
  79         LOG.trace("update : External Subnet VPN Instance update mapping method - key:{} original:{} new:{}",
  80                 vpnInstanceNew.key(), vpnInstanceOrig, vpnInstanceNew);
  81     }
  82
  83     @Override
  84     public void add(InstanceIdentifier<VpnInstance> key, VpnInstance vpnInstance) {
  85         LOG.trace("add : External Subnet VPN Instance OP Data Entry add mapping method - key:{}. value={}",
  86                 vpnInstance.key(), vpnInstance);
  87         String possibleExtSubnetUuid = vpnInstance.getVpnInstanceName();
  88         Optional<Subnets> optionalSubnets = NatUtil.getOptionalExternalSubnets(dataBroker,
  89                 new Uuid(possibleExtSubnetUuid));
  90         if (optionalSubnets.isPresent()) {
  91             LOG.debug("add : VpnInstance {} for external subnet {}.", possibleExtSubnetUuid,
  92                     optionalSubnets.get());
  93             addOrDelDefaultFibRouteToSNATFlow(vpnInstance, optionalSubnets.get(), NwConstants.ADD_FLOW);
  94             invokeSubnetAddedToVpn(possibleExtSubnetUuid);
  95         }
  96     }
  97
  98     private void invokeSubnetAddedToVpn(String externalSubnetId) {
  99         Uuid externalSubnetUuid = new Uuid(externalSubnetId);
 100         Subnetmap subnetMap = NatUtil.getSubnetMap(dataBroker, externalSubnetUuid);
 101         if (subnetMap == null) {
 102             LOG.error("invokeSubnetAddedToVpn : Cannot invoke onSubnetAddedToVpn for subnet-id {} in vpn-id {}"
 103                     + " due to this subnet missing in Subnetmap model", externalSubnetUuid, externalSubnetId);
 104             return;
 105         }
 106         ElanInstance elanInstance = elanService.getElanInstance(subnetMap.getNetworkId().getValue());
 107         vpnManager.onSubnetAddedToVpn(subnetMap, false, elanInstance.getElanTag().toJava());
 108
 109     }
 110
 111     private void invokeSubnetDeletedFromVpn(String externalSubnetId) {
 112         Uuid externalSubnetUuid = new Uuid(externalSubnetId);
 113         Subnetmap subnetMap = NatUtil.getSubnetMap(dataBroker, externalSubnetUuid);
 114         if (subnetMap == null) {
 115             LOG.error("invokeSubnetDeletedFromVpn : Cannot invoke invokeSubnetDeletedFromVpn for subnet-id {} in "
 116                     + "vpn-id {} due to this subnet missing in Subnetmap model", externalSubnetUuid, externalSubnetId);
 117             return;
 118         }
 119         vpnManager.onSubnetDeletedFromVpn(subnetMap, false);
 120     }
 121
 122     private void addOrDelDefaultFibRouteToSNATFlow(VpnInstance vpnInstance, Subnets subnet, int flowAction) {
 123         String vpnInstanceName = vpnInstance.getVpnInstanceName();
 124         LOG.debug("addOrDelDefaultFibRouteToSNATFlow : VpnInstance {} for external subnet {}.",
 125                 vpnInstanceName, subnet);
 126         snatDefaultRouteProgrammer.addOrDelDefaultFibRouteToSNATForSubnet(subnet,
 127                 subnet.getExternalNetworkId().getValue(), flowAction, vpnInstance.getVpnId());
 128     }
 129 }