vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/VpnUtil.java

   1 /*
   2  * Copyright © 2016, 2017 Ericsson India Global Services Pvt Ltd. 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.netvirt.vpnmanager;
  10
  11 import static java.util.Collections.emptyList;
  12 import static org.opendaylight.genius.infra.Datastore.OPERATIONAL;
  13
  14 import com.google.common.base.Optional;
  15 import com.google.common.collect.Iterators;
  16 import com.google.common.net.InetAddresses;
  17 import com.google.common.util.concurrent.FutureCallback;
  18 import com.google.common.util.concurrent.ListenableFuture;
  19 import java.math.BigInteger;
  20 import java.net.Inet4Address;
  21 import java.net.Inet6Address;
  22 import java.net.InetAddress;
  23 import java.net.UnknownHostException;
  24 import java.text.SimpleDateFormat;
  25 import java.util.ArrayList;
  26 import java.util.Collection;
  27 import java.util.Collections;
  28 import java.util.Date;
  29 import java.util.HashMap;
  30 import java.util.HashSet;
  31 import java.util.List;
  32 import java.util.Locale;
  33 import java.util.Map;
  34 import java.util.Map.Entry;
  35 import java.util.Objects;
  36 import java.util.Set;
  37 import java.util.concurrent.ExecutionException;
  38 import java.util.concurrent.Future;
  39 import java.util.function.Predicate;
  40 import java.util.stream.Collectors;
  41 import javax.inject.Singleton;
  42 import org.eclipse.jdt.annotation.NonNull;
  43 import org.eclipse.jdt.annotation.Nullable;
  44 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  45 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  46 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  47 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  48 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  49 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  50 import org.opendaylight.genius.infra.Datastore;
  51 import org.opendaylight.genius.infra.Datastore.Configuration;
  52 import org.opendaylight.genius.infra.Datastore.Operational;
  53 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  54 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  55 import org.opendaylight.genius.infra.TypedReadTransaction;
  56 import org.opendaylight.genius.infra.TypedReadWriteTransaction;
  57 import org.opendaylight.genius.infra.TypedWriteTransaction;
  58 import org.opendaylight.genius.interfacemanager.interfaces.IInterfaceManager;
  59 import org.opendaylight.genius.mdsalutil.FlowEntity;
  60 import org.opendaylight.genius.mdsalutil.FlowEntityBuilder;
  61 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  62 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  63 import org.opendaylight.genius.mdsalutil.MatchInfo;
  64 import org.opendaylight.genius.mdsalutil.MetaDataUtil;
  65 import org.opendaylight.genius.mdsalutil.NWUtil;
  66 import org.opendaylight.genius.mdsalutil.NwConstants;
  67 import org.opendaylight.genius.mdsalutil.actions.ActionRegLoad;
  68 import org.opendaylight.genius.mdsalutil.instructions.InstructionGotoTable;
  69 import org.opendaylight.genius.mdsalutil.instructions.InstructionWriteMetadata;
  70 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  71 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetDestination;
  72 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetType;
  73 import org.opendaylight.genius.mdsalutil.matches.MatchMetadata;
  74 import org.opendaylight.genius.utils.ServiceIndex;
  75 import org.opendaylight.genius.utils.SystemPropertyReader;
  76 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  77 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  78 import org.opendaylight.netvirt.bgpmanager.api.IBgpManager;
  79 import org.opendaylight.netvirt.elanmanager.api.ElanHelper;
  80 import org.opendaylight.netvirt.fibmanager.api.IFibManager;
  81 import org.opendaylight.netvirt.fibmanager.api.RouteOrigin;
  82 import org.opendaylight.netvirt.neutronvpn.api.enums.IpVersionChoice;
  83 import org.opendaylight.netvirt.neutronvpn.interfaces.INeutronVpnManager;
  84 import org.opendaylight.netvirt.vpnmanager.api.InterfaceUtils;
  85 import org.opendaylight.netvirt.vpnmanager.api.VpnExtraRouteHelper;
  86 import org.opendaylight.netvirt.vpnmanager.api.VpnHelper;
  87 import org.opendaylight.netvirt.vpnmanager.iplearn.model.MacEntry;
  88 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.VpnAfConfig;
  89 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.VpnInstances;
  90 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.VpnInterfaces;
  91 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.instances.VpnInstance;
  92 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.instances.VpnInstanceKey;
  93 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.VpnInterface;
  94 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.VpnInterfaceBuilder;
  95 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.VpnInterfaceKey;
  96 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.vpn._interface.VpnInstanceNames;
  97 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  98 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddressBuilder;
  99 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
 100 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
 101 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
 102 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
 103 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
 104 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
 105 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.Action;
 106 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
 107 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.AllocateIdInput;
 108 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.AllocateIdInputBuilder;
 109 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.AllocateIdOutput;
 110 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
 111 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.ReleaseIdInput;
 112 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.ReleaseIdInputBuilder;
 113 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.ReleaseIdOutput;
 114 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.IfIndexesInterfaceMap;
 115 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._if.indexes._interface.map.IfIndexInterface;
 116 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._if.indexes._interface.map.IfIndexInterfaceKey;
 117 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetInterfaceFromIfIndexInput;
 118 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetInterfaceFromIfIndexInputBuilder;
 119 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetInterfaceFromIfIndexOutput;
 120 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.OdlInterfaceRpcService;
 121 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServices;
 122 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.ipv6.nd.util.rev170210.Ipv6NdUtilService;
 123 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.ipv6.nd.util.rev170210.SendNeighborSolicitationToOfGroupInput;
 124 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.ipv6.nd.util.rev170210.SendNeighborSolicitationToOfGroupInputBuilder;
 125 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.ipv6.nd.util.rev170210.SendNeighborSolicitationToOfGroupOutput;
 126 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.LockManagerService;
 127 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.TimeUnits;
 128 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.TryLockInput;
 129 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.TryLockInputBuilder;
 130 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.TryLockOutput;
 131 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.UnlockInput;
 132 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.UnlockInputBuilder;
 133 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.UnlockOutput;
 134 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanDpnInterfaces;
 135 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInterfaces;
 136 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanTagNameMap;
 137 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.SegmentTypeVlan;
 138 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.ElanDpnInterfacesList;
 139 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.ElanDpnInterfacesListKey;
 140 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfaces;
 141 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfacesBuilder;
 142 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfacesKey;
 143 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
 144 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterface;
 145 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterfaceKey;
 146 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.tag.name.map.ElanTagName;
 147 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.tag.name.map.ElanTagNameKey;
 148 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.FibEntries;
 149 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.VrfEntryBase;
 150 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.extraroute.rds.map.extraroute.rds.dest.prefixes.AllocatedRdsBuilder;
 151 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.extraroute.rds.map.extraroute.rds.dest.prefixes.AllocatedRdsKey;
 152 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTables;
 153 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTablesKey;
 154 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntry;
 155 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntryKey;
 156 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3nexthop.rev150409.L3nexthop;
 157 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3nexthop.rev150409.l3nexthop.VpnNexthops;
 158 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3nexthop.rev150409.l3nexthop.VpnNexthopsKey;
 159 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.Adjacencies;
 160 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AdjacenciesBuilder;
 161 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AdjacenciesOp;
 162 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AdjacenciesOpBuilder;
 163 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.LearntVpnVipToPortData;
 164 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.LearntVpnVipToPortEventAction;
 165 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.LearntVpnVipToPortEventData;
 166 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.PrefixToInterface;
 167 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.SubnetOpData;
 168 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.SubnetsAssociatedToRouteTargets;
 169 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.VpnIdToVpnInstance;
 170 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.VpnInstanceOpData;
 171 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.VpnInterfaceOpData;
 172 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.VpnToExtraroutes;
 173 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.adjacency.list.Adjacency;
 174 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.adjacency.list.Adjacency.AdjacencyType;
 175 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.adjacency.list.AdjacencyKey;
 176 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.learnt.vpn.vip.to.port.data.LearntVpnVipToPort;
 177 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.learnt.vpn.vip.to.port.data.LearntVpnVipToPortBuilder;
 178 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.learnt.vpn.vip.to.port.data.LearntVpnVipToPortKey;
 179 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.learnt.vpn.vip.to.port.event.data.LearntVpnVipToPortEvent;
 180 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.learnt.vpn.vip.to.port.event.data.LearntVpnVipToPortEventBuilder;
 181 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.learnt.vpn.vip.to.port.event.data.LearntVpnVipToPortEventKey;
 182 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.prefix.to._interface.VpnIds;
 183 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.prefix.to._interface.VpnIdsKey;
 184 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.prefix.to._interface.vpn.ids.Prefixes;
 185 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.prefix.to._interface.vpn.ids.PrefixesBuilder;
 186 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.prefix.to._interface.vpn.ids.PrefixesKey;
 187 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnet.op.data.SubnetOpDataEntry;
 188 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnet.op.data.SubnetOpDataEntryKey;
 189 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnets.associated.to.route.targets.RouteTarget;
 190 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnets.associated.to.route.targets.RouteTargetKey;
 191 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnets.associated.to.route.targets.route.target.AssociatedSubnet;
 192 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnets.associated.to.route.targets.route.target.AssociatedSubnetKey;
 193 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnets.associated.to.route.targets.route.target.associated.subnet.AssociatedVpn;
 194 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnets.associated.to.route.targets.route.target.associated.subnet.AssociatedVpnBuilder;
 195 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.subnets.associated.to.route.targets.route.target.associated.subnet.AssociatedVpnKey;
 196 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn._interface.op.data.VpnInterfaceOpDataEntry;
 197 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn._interface.op.data.VpnInterfaceOpDataEntryBuilder;
 198 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn._interface.op.data.VpnInterfaceOpDataEntryKey;
 199 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
 200 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntryBuilder;
 201 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntryKey;
 202 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnTargets;
 203 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnList;
 204 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpntargets.VpnTarget;
 205 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstanceBuilder;
 206 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.to.extraroutes.Vpn;
 207 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.to.extraroutes.VpnKey;
 208 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.to.extraroutes.vpn.extra.routes.Routes;
 209 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.to.extraroutes.vpn.extra.routes.RoutesBuilder;
 210 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExtRouters;
 211 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExternalNetworks;
 212 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExternalSubnets;
 213 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.NaptSwitches;
 214 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.Routers;
 215 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.RoutersKey;
 216 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.routers.ExternalIps;
 217 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.networks.Networks;
 218 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.networks.NetworksKey;
 219 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.subnets.SubnetsKey;
 220 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.napt.switches.RouterToNaptSwitch;
 221 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.napt.switches.RouterToNaptSwitchKey;
 222 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.NetworkAttributes.NetworkType;
 223 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.NetworkMaps;
 224 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.NeutronVpnPortipPortData;
 225 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.Subnetmaps;
 226 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMap;
 227 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.networkmaps.NetworkMapKey;
 228 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.neutron.vpn.portip.port.data.VpnPortipToPort;
 229 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.neutron.vpn.portip.port.data.VpnPortipToPortBuilder;
 230 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.neutron.vpn.portip.port.data.VpnPortipToPortKey;
 231 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.subnetmaps.Subnetmap;
 232 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.subnetmaps.SubnetmapKey;
 233 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.IpVersionBase;
 234 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.IpVersionV4;
 235 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.ext.rev150712.NetworkL3Extension;
 236 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network;
 237 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.NetworkKey;
 238 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.port.attributes.FixedIps;
 239 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
 240 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
 241 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;
 242 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
 243 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.SubnetKey;
 244 import org.opendaylight.yangtools.yang.binding.DataObject;
 245 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 246 import org.opendaylight.yangtools.yang.common.RpcResult;
 247 import org.opendaylight.yangtools.yang.data.api.schema.tree.ModifiedNodeDoesNotExistException;
 248 import org.slf4j.Logger;
 249 import org.slf4j.LoggerFactory;
 250
 251 @Singleton
 252 public final class VpnUtil {
 253
 254     private static final Logger LOG = LoggerFactory.getLogger(VpnUtil.class);
 255
 256     public static final int SINGLE_TRANSACTION_BROKER_NO_RETRY = 1;
 257     private static Boolean arpLearningEnabled = Boolean.TRUE;
 258
 259     private final DataBroker dataBroker;
 260     private final IdManagerService idManager;
 261     private final IFibManager fibManager;
 262     private final IBgpManager bgpManager;
 263     private final LockManagerService lockManager;
 264     private final INeutronVpnManager neutronVpnService;
 265     private final IMdsalApiManager mdsalManager;
 266     private final IInterfaceManager interfaceManager;
 267     private final JobCoordinator jobCoordinator;
 268     private final ManagedNewTransactionRunner txRunner;
 269     private final OdlInterfaceRpcService ifmRpcService;
 270
 271     /**
 272      * Class to generate timestamps with microsecond precision.
 273      * For example: MicroTimestamp.INSTANCE.get() = "2012-10-21 19:13:45.267128"
 274      */
 275     public enum MicroTimestamp {
 276         INSTANCE ;
 277
 278         private long              startDate ;
 279         private long              startNanoseconds ;
 280         private SimpleDateFormat  dateFormat ;
 281
 282         MicroTimestamp() {
 283             this.startDate = System.currentTimeMillis() ;
 284             this.startNanoseconds = System.nanoTime() ;
 285             this.dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS") ;
 286         }
 287
 288         public String get() {
 289             long microSeconds = (System.nanoTime() - this.startNanoseconds) / 1000 ;
 290             long date = this.startDate + microSeconds / 1000 ;
 291             return this.dateFormat.format(date) + String.format("%03d", microSeconds % 1000) ;
 292         }
 293     }
 294
 295     public VpnUtil(DataBroker dataBroker, IdManagerService idManager, IFibManager fibManager,
 296                    IBgpManager bgpManager, LockManagerService lockManager, INeutronVpnManager neutronVpnService,
 297                    IMdsalApiManager mdsalManager, JobCoordinator jobCoordinator, IInterfaceManager interfaceManager,
 298                    OdlInterfaceRpcService ifmRpcService) {
 299         this.dataBroker = dataBroker;
 300         this.idManager = idManager;
 301         this.fibManager = fibManager;
 302         this.bgpManager = bgpManager;
 303         this.lockManager = lockManager;
 304         this.neutronVpnService = neutronVpnService;
 305         this.mdsalManager = mdsalManager;
 306         this.interfaceManager = interfaceManager;
 307         this.jobCoordinator = jobCoordinator;
 308         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
 309         this.ifmRpcService = ifmRpcService;
 310     }
 311
 312     public static InstanceIdentifier<VpnInterface> getVpnInterfaceIdentifier(String vpnInterfaceName) {
 313         return InstanceIdentifier.builder(VpnInterfaces.class)
 314                 .child(VpnInterface.class, new VpnInterfaceKey(vpnInterfaceName)).build();
 315     }
 316
 317     static InstanceIdentifier<VpnInterfaceOpDataEntry> getVpnInterfaceOpDataEntryIdentifier(String vpnInterfaceName,
 318                                                                                      String vpnName) {
 319         return InstanceIdentifier.builder(VpnInterfaceOpData.class).child(VpnInterfaceOpDataEntry.class,
 320             new VpnInterfaceOpDataEntryKey(vpnInterfaceName, vpnName)).build();
 321     }
 322
 323     static InstanceIdentifier<VpnInstance> getVpnInstanceIdentifier(String vpnName) {
 324         return InstanceIdentifier.builder(VpnInstances.class)
 325                 .child(VpnInstance.class, new VpnInstanceKey(vpnName)).build();
 326     }
 327
 328     @Nullable
 329     VpnInterface getVpnInterface(String vpnInterfaceName) {
 330         InstanceIdentifier<VpnInterface> id = getVpnInterfaceIdentifier(vpnInterfaceName);
 331         Optional<VpnInterface> vpnInterface = read(LogicalDatastoreType.CONFIGURATION, id);
 332         return vpnInterface.isPresent() ? vpnInterface.get() : null;
 333     }
 334
 335     static VpnInterfaceOpDataEntry getVpnInterfaceOpDataEntry(String intfName, String vpnName, AdjacenciesOp aug,
 336                                                        BigInteger dpnId, long lportTag,
 337                                                        String gwMac) {
 338         return new VpnInterfaceOpDataEntryBuilder().withKey(new VpnInterfaceOpDataEntryKey(intfName, vpnName))
 339             .setDpnId(dpnId).addAugmentation(AdjacenciesOp.class, aug)
 340                 .setLportTag(lportTag).setGatewayMacAddress(gwMac).build();
 341     }
 342
 343     Optional<VpnInterfaceOpDataEntry> getVpnInterfaceOpDataEntry(String vpnInterfaceName, String vpnName) {
 344         InstanceIdentifier<VpnInterfaceOpDataEntry> id = getVpnInterfaceOpDataEntryIdentifier(vpnInterfaceName,
 345                                                                                               vpnName);
 346         Optional<VpnInterfaceOpDataEntry> vpnInterfaceOpDataEntry = read(LogicalDatastoreType.OPERATIONAL,
 347                 id);
 348         return vpnInterfaceOpDataEntry;
 349     }
 350
 351     static InstanceIdentifier<Prefixes> getPrefixToInterfaceIdentifier(long vpnId, String ipPrefix) {
 352         return InstanceIdentifier.builder(PrefixToInterface.class).child(VpnIds.class, new VpnIdsKey(vpnId))
 353                 .child(Prefixes.class, new PrefixesKey(ipPrefix)).build();
 354     }
 355
 356     static InstanceIdentifier<VpnIds> getPrefixToInterfaceIdentifier(long vpnId) {
 357         return InstanceIdentifier.builder(PrefixToInterface.class).child(VpnIds.class, new VpnIdsKey(vpnId)).build();
 358     }
 359
 360     static Prefixes getPrefixToInterface(BigInteger dpId, String vpnInterfaceName, String ipPrefix,
 361             Uuid networkId, NetworkType networkType, Long segmentationId, Prefixes.PrefixCue prefixCue) {
 362         return new PrefixesBuilder().setDpnId(dpId).setVpnInterfaceName(
 363             vpnInterfaceName).setIpAddress(ipPrefix)//.setSubnetId(subnetId)
 364                 .setNetworkId(networkId).setNetworkType(networkType).setSegmentationId(segmentationId)
 365                 .setPrefixCue(prefixCue).build();
 366     }
 367
 368     static Prefixes getPrefixToInterface(BigInteger dpId, String vpnInterfaceName, String ipPrefix,
 369             Prefixes.PrefixCue prefixCue) {
 370         return new PrefixesBuilder().setDpnId(dpId).setVpnInterfaceName(vpnInterfaceName).setIpAddress(ipPrefix)
 371                 .setPrefixCue(prefixCue).build();
 372     }
 373
 374     Optional<Prefixes> getPrefixToInterface(long vpnId, String ipPrefix) {
 375         return read(LogicalDatastoreType.OPERATIONAL, getPrefixToInterfaceIdentifier(vpnId, getIpPrefix(ipPrefix)));
 376     }
 377
 378     /**
 379      * Get VRF table given a Route Distinguisher.
 380      *
 381      * @param rd Route-Distinguisher
 382      * @return VrfTables that holds the list of VrfEntries of the specified rd
 383      */
 384     @Nullable
 385     VrfTables getVrfTable(String rd) {
 386         InstanceIdentifier<VrfTables> id = InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class,
 387                 new VrfTablesKey(rd)).build();
 388         Optional<VrfTables> vrfTable = read(LogicalDatastoreType.CONFIGURATION, id);
 389         return vrfTable.isPresent() ? vrfTable.get() : null;
 390     }
 391
 392     /**
 393      * Retrieves the VrfEntries that belong to a given VPN filtered out by
 394      * Origin, searching by its Route-Distinguisher.
 395      *
 396      * @param rd Route-distinguisher of the VPN
 397      * @param originsToConsider Only entries whose origin is included in this list will be considered
 398      * @return the list of VrfEntries
 399      */
 400     public List<VrfEntry> getVrfEntriesByOrigin(String rd, List<RouteOrigin> originsToConsider) {
 401         List<VrfEntry> result = new ArrayList<>();
 402         List<VrfEntry> allVpnVrfEntries = getAllVrfEntries(rd);
 403         for (VrfEntry vrfEntry : allVpnVrfEntries) {
 404             if (originsToConsider.contains(RouteOrigin.value(vrfEntry.getOrigin()))) {
 405                 result.add(vrfEntry);
 406             }
 407         }
 408         return result;
 409     }
 410
 411     /**
 412      * Retrieves all the VrfEntries that belong to a given VPN searching by its
 413      * Route-Distinguisher.
 414      *
 415      * @param rd Route-distinguisher of the VPN
 416      * @return the list of VrfEntries
 417      */
 418     public List<VrfEntry> getAllVrfEntries(String rd) {
 419         VrfTables vrfTables = getVrfTable(rd);
 420         if (vrfTables != null && vrfTables.getVrfEntry() != null) {
 421             return vrfTables.getVrfEntry();
 422         }
 423         return emptyList();
 424     }
 425
 426     //FIXME: Implement caches for DS reads
 427     @Nullable
 428     public VpnInstance getVpnInstance(String vpnInstanceName) {
 429         InstanceIdentifier<VpnInstance> id = InstanceIdentifier.builder(VpnInstances.class).child(VpnInstance.class,
 430             new VpnInstanceKey(vpnInstanceName)).build();
 431         Optional<VpnInstance> vpnInstance = read(LogicalDatastoreType.CONFIGURATION, id);
 432         return vpnInstance.isPresent() ? vpnInstance.get() : null;
 433     }
 434
 435     @NonNull
 436     List<VpnInstanceOpDataEntry> getAllVpnInstanceOpData() {
 437         InstanceIdentifier<VpnInstanceOpData> id = InstanceIdentifier.builder(VpnInstanceOpData.class).build();
 438         Optional<VpnInstanceOpData> vpnInstanceOpDataOptional = read(LogicalDatastoreType.OPERATIONAL, id);
 439         return
 440             vpnInstanceOpDataOptional.isPresent() && vpnInstanceOpDataOptional.get().getVpnInstanceOpDataEntry() != null
 441                 ? vpnInstanceOpDataOptional.get().getVpnInstanceOpDataEntry()
 442                 : emptyList();
 443     }
 444
 445     @NonNull
 446     List<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data
 447             .vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces> getDpnVpnInterfaces(VpnInstance vpnInstance,
 448                                                                                            BigInteger dpnId) {
 449         String primaryRd = getPrimaryRd(vpnInstance);
 450         InstanceIdentifier<VpnToDpnList> dpnToVpnId = VpnHelper.getVpnToDpnListIdentifier(primaryRd, dpnId);
 451         Optional<VpnToDpnList> dpnInVpn = read(LogicalDatastoreType.OPERATIONAL, dpnToVpnId);
 452         return dpnInVpn.isPresent() && dpnInVpn.get().getVpnInterfaces() != null ? dpnInVpn.get().getVpnInterfaces()
 453             : emptyList();
 454     }
 455
 456     @NonNull
 457     static List<String> getListOfRdsFromVpnInstance(VpnInstance vpnInstance) {
 458         VpnAfConfig vpnConfig = vpnInstance.getIpv4Family();
 459         LOG.trace("vpnConfig {}", vpnConfig);
 460         return vpnConfig.getRouteDistinguisher() != null && vpnConfig.getRouteDistinguisher() != null
 461             ? vpnConfig.getRouteDistinguisher() : emptyList();
 462     }
 463
 464     @Nullable
 465     VrfEntry getVrfEntry(String rd, String ipPrefix) {
 466         VrfTables vrfTable = getVrfTable(rd);
 467         // TODO: why check VrfTables if we later go for the specific VrfEntry?
 468         if (vrfTable != null) {
 469             InstanceIdentifier<VrfEntry> vrfEntryId =
 470                 InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd)).child(
 471                     VrfEntry.class, new VrfEntryKey(ipPrefix)).build();
 472             Optional<VrfEntry> vrfEntry = read(LogicalDatastoreType.CONFIGURATION, vrfEntryId);
 473             if (vrfEntry.isPresent()) {
 474                 return vrfEntry.get();
 475             }
 476         }
 477         return null;
 478     }
 479
 480     @Nullable
 481     public List<Adjacency> getAdjacenciesForVpnInterfaceFromConfig(String intfName) {
 482         final InstanceIdentifier<VpnInterface> identifier = getVpnInterfaceIdentifier(intfName);
 483         InstanceIdentifier<Adjacencies> path = identifier.augmentation(Adjacencies.class);
 484         Optional<Adjacencies> adjacencies = read(LogicalDatastoreType.CONFIGURATION, path);
 485         if (adjacencies.isPresent()) {
 486             return adjacencies.get().getAdjacency();
 487         }
 488         return null;
 489     }
 490
 491     static Routes getVpnToExtraroute(String ipPrefix, List<String> nextHopList) {
 492         return new RoutesBuilder().setPrefix(ipPrefix).setNexthopIpList(nextHopList).build();
 493     }
 494
 495     @Nullable
 496     String getVpnInterfaceName(BigInteger metadata) throws InterruptedException, ExecutionException {
 497         GetInterfaceFromIfIndexInputBuilder ifIndexInputBuilder = new GetInterfaceFromIfIndexInputBuilder();
 498         BigInteger lportTag = MetaDataUtil.getLportFromMetadata(metadata);
 499         ifIndexInputBuilder.setIfIndex(lportTag.intValue());
 500         GetInterfaceFromIfIndexInput input = ifIndexInputBuilder.build();
 501         Future<RpcResult<GetInterfaceFromIfIndexOutput>> interfaceFromIfIndex =
 502                 ifmRpcService.getInterfaceFromIfIndex(input);
 503         GetInterfaceFromIfIndexOutput interfaceFromIfIndexOutput;
 504         RpcResult<GetInterfaceFromIfIndexOutput> rpcResult = interfaceFromIfIndex.get();
 505         if (rpcResult == null) {
 506             return null;
 507         }
 508         interfaceFromIfIndexOutput = rpcResult.getResult();
 509         return interfaceFromIfIndexOutput.getInterfaceName();
 510     }
 511
 512     static AllocatedRdsBuilder getRdsBuilder(String nexthop, String rd) {
 513         return new AllocatedRdsBuilder().withKey(new AllocatedRdsKey(nexthop)).setNexthop(nexthop).setRd(rd);
 514     }
 515
 516     public static Adjacencies getVpnInterfaceAugmentation(List<Adjacency> nextHopList) {
 517         return new AdjacenciesBuilder().setAdjacency(nextHopList).build();
 518     }
 519
 520     static AdjacenciesOp getVpnInterfaceOpDataEntryAugmentation(List<Adjacency> nextHopList) {
 521         return new AdjacenciesOpBuilder().setAdjacency(nextHopList).build();
 522     }
 523
 524     static InstanceIdentifier<Interface> getInterfaceIdentifier(String interfaceName) {
 525         return InstanceIdentifier.builder(Interfaces.class).child(Interface.class,
 526                 new InterfaceKey(interfaceName)).build();
 527     }
 528
 529     public static BigInteger getCookieL3(int vpnId) {
 530         return VpnConstants.COOKIE_L3_BASE.add(new BigInteger("0610000", 16)).add(BigInteger.valueOf(vpnId));
 531     }
 532
 533     public int getUniqueId(String poolName, String idKey) {
 534         AllocateIdInput getIdInput = new AllocateIdInputBuilder().setPoolName(poolName).setIdKey(idKey).build();
 535         try {
 536             Future<RpcResult<AllocateIdOutput>> result = idManager.allocateId(getIdInput);
 537             RpcResult<AllocateIdOutput> rpcResult = result.get();
 538             if (rpcResult.isSuccessful()) {
 539                 return rpcResult.getResult().getIdValue().intValue();
 540             } else {
 541                 LOG.error("getUniqueId: RPC Call to Get Unique Id from pool {} with key {} returned with Errors {}",
 542                         poolName, idKey, rpcResult.getErrors());
 543             }
 544         } catch (InterruptedException | ExecutionException e) {
 545             LOG.error("getUniqueId: Exception when getting Unique Id from pool {} for key {}", poolName, idKey, e);
 546         }
 547         return 0;
 548     }
 549
 550     void releaseId(String poolName, String idKey) {
 551         ReleaseIdInput idInput = new ReleaseIdInputBuilder().setPoolName(poolName).setIdKey(idKey).build();
 552         try {
 553             RpcResult<ReleaseIdOutput> rpcResult = idManager.releaseId(idInput).get();
 554             if (!rpcResult.isSuccessful()) {
 555                 LOG.error("releaseId: RPC Call to release Id for key {} from pool {} returned with Errors {}",
 556                         idKey, poolName, rpcResult.getErrors());
 557             }
 558         } catch (InterruptedException | ExecutionException e) {
 559             LOG.error("releaseId: Exception when releasing Id for key {} from pool {}", idKey, poolName, e);
 560         }
 561     }
 562
 563     public static String getNextHopLabelKey(String rd, String prefix) {
 564         return rd + VpnConstants.SEPARATOR + prefix;
 565     }
 566
 567     /**
 568      * Retrieves the dataplane identifier of a specific VPN, searching by its
 569      * VpnInstance name.
 570      *
 571      * @param vpnName Name of the VPN
 572      * @return the dataplane identifier of the VPN, the VrfTag.
 573      */
 574     public long getVpnId(String vpnName) {
 575         if (vpnName == null) {
 576             return VpnConstants.INVALID_ID;
 577         }
 578
 579         return read(LogicalDatastoreType.CONFIGURATION, VpnOperDsUtils.getVpnInstanceToVpnIdIdentifier(vpnName))
 580                 .toJavaUtil().map(org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911
 581                         .vpn.instance.to.vpn.id.VpnInstance::getVpnId).orElse(VpnConstants.INVALID_ID);
 582     }
 583
 584     /**
 585      * Retrieves the VPN Route Distinguisher searching by its Vpn instance name.
 586      *
 587      * @param vpnName Name of the VPN
 588      * @return the route-distinguisher of the VPN
 589      */
 590     public String getVpnRd(String vpnName) {
 591         Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id
 592             .VpnInstance> vpnInstance = read(LogicalDatastoreType.CONFIGURATION,
 593                 VpnOperDsUtils.getVpnInstanceToVpnIdIdentifier(vpnName));
 594         String rd = null;
 595         if (vpnInstance.isPresent()) {
 596             rd = vpnInstance.get().getVrfId();
 597         }
 598         return rd;
 599     }
 600
 601     public static String getVpnRd(TypedReadTransaction<Configuration> confTx, String vpnName) {
 602         try {
 603             return confTx.read(VpnOperDsUtils.getVpnInstanceToVpnIdIdentifier(vpnName)).get().toJavaUtil().map(
 604                 vpnInstance -> vpnInstance.getVrfId()).orElse(null);
 605         } catch (InterruptedException | ExecutionException e) {
 606             throw new RuntimeException(e);
 607         }
 608     }
 609
 610     List<String> getVpnRdsFromVpnInstanceConfig(String vpnName) {
 611         InstanceIdentifier<VpnInstance> id = InstanceIdentifier.builder(VpnInstances.class)
 612             .child(VpnInstance.class, new VpnInstanceKey(vpnName)).build();
 613         Optional<VpnInstance> vpnInstance = read(LogicalDatastoreType.CONFIGURATION, id);
 614         return vpnInstance.isPresent() ? getListOfRdsFromVpnInstance(vpnInstance.get()) : new ArrayList<>();
 615     }
 616
 617     /**
 618      * Remove from MDSAL all those VrfEntries in a VPN that have an specific RouteOrigin.
 619      *
 620      * @param rd Route Distinguisher
 621      * @param origin Origin of the Routes to be removed (see {@link RouteOrigin})
 622      */
 623     public void removeVrfEntriesByOrigin(String rd, RouteOrigin origin) {
 624         InstanceIdentifier<VrfTables> vpnVrfTableIid =
 625             InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd)).build();
 626         Optional<VrfTables> vrfTablesOpc = read(LogicalDatastoreType.CONFIGURATION, vpnVrfTableIid);
 627         if (vrfTablesOpc.isPresent()) {
 628             VrfTables vrfTables = vrfTablesOpc.get();
 629             ListenableFutures.addErrorLogging(
 630                     new ManagedNewTransactionRunnerImpl(dataBroker).callWithNewWriteOnlyTransactionAndSubmit(
 631                                                                             Datastore.CONFIGURATION, tx -> {
 632                             for (VrfEntry vrfEntry : vrfTables.nonnullVrfEntry()) {
 633                                 if (origin == RouteOrigin.value(vrfEntry.getOrigin())) {
 634                                     tx.delete(vpnVrfTableIid.child(VrfEntry.class, vrfEntry.key()));
 635                                 }
 636                             }
 637                         }), LOG, "Error removing VRF entries by origin");
 638         }
 639     }
 640
 641     public List<VrfEntry> findVrfEntriesByNexthop(String rd, String nexthop) {
 642         InstanceIdentifier<VrfTables> vpnVrfTableIid =
 643             InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd)).build();
 644         Optional<VrfTables> vrfTablesOpc = read(LogicalDatastoreType.CONFIGURATION, vpnVrfTableIid);
 645         List<VrfEntry> matches = new ArrayList<>();
 646         if (vrfTablesOpc.isPresent()) {
 647             VrfTables vrfTables = vrfTablesOpc.get();
 648             for (VrfEntry vrfEntry : vrfTables.nonnullVrfEntry()) {
 649                 vrfEntry.nonnullRoutePaths().stream()
 650                         .filter(routePath -> routePath.getNexthopAddress() != null && routePath.getNexthopAddress()
 651                                 .equals(nexthop)).findFirst().ifPresent(routePath -> matches.add(vrfEntry));
 652             }
 653         }
 654         return matches;
 655     }
 656
 657     public void removeVrfEntries(String rd, List<VrfEntry> vrfEntries) {
 658         InstanceIdentifier<VrfTables> vpnVrfTableIid =
 659             InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd)).build();
 660         ListenableFutures.addErrorLogging(
 661                 new ManagedNewTransactionRunnerImpl(dataBroker).callWithNewWriteOnlyTransactionAndSubmit(
 662                                                                             Datastore.CONFIGURATION, tx -> {
 663                         for (VrfEntry vrfEntry : vrfEntries) {
 664                             tx.delete(vpnVrfTableIid.child(VrfEntry.class, vrfEntry.key()));
 665                         }
 666                     }), LOG, "Error removing VRF entries");
 667     }
 668
 669     // TODO Clean up the exception handling
 670     @SuppressWarnings("checkstyle:IllegalCatch")
 671     public void withdrawRoutes(String rd, List<VrfEntry> vrfEntries) {
 672         vrfEntries.forEach(vrfEntry -> {
 673             try {
 674                 bgpManager.withdrawPrefix(rd, vrfEntry.getDestPrefix());
 675             } catch (Exception e) {
 676                 LOG.error("withdrawRoutes: Could not withdraw route to {} with route-paths {} in VpnRd {}",
 677                           vrfEntry.getDestPrefix(), vrfEntry.getRoutePaths(), rd);
 678             }
 679         });
 680     }
 681
 682     public boolean removeOrUpdateDSForExtraRoute(String vpnName, String primaryRd, String extraRouteRd,
 683                                                  String vpnInterfaceName, String prefix, String nextHop,
 684                                                  String nextHopTunnelIp, TypedWriteTransaction<Operational> operTx) {
 685         LOG.info("removeOrUpdateDSForExtraRoute: VPN WITHDRAW: Removing Fib Entry rd {} prefix {} nexthop {}",
 686                 extraRouteRd, prefix, nextHop);
 687         boolean areNextHopsClearedForRd = false;
 688         Optional<Routes> optVpnExtraRoutes = VpnExtraRouteHelper
 689                 .getVpnExtraroutes(dataBroker, vpnName, extraRouteRd, prefix);
 690         if (optVpnExtraRoutes.isPresent()) {
 691             List<String> nhList = optVpnExtraRoutes.get().getNexthopIpList();
 692             if (nhList != null && nhList.size() > 1) {
 693                 // If nhList is more than 1, just update vpntoextraroute and prefixtointerface DS
 694                 // For other cases, remove the corresponding tep ip from fibentry and withdraw prefix
 695                 nhList.remove(nextHop);
 696                 syncWrite(LogicalDatastoreType.OPERATIONAL,
 697                         VpnExtraRouteHelper.getVpnToExtrarouteVrfIdIdentifier(vpnName, extraRouteRd, prefix),
 698                         VpnUtil.getVpnToExtraroute(prefix, nhList));
 699                 MDSALUtil.syncDelete(dataBroker,
 700                         LogicalDatastoreType.CONFIGURATION, VpnExtraRouteHelper.getUsedRdsIdentifier(getVpnId(vpnName),
 701                                 prefix, nextHop));
 702                 LOG.debug("removeOrUpdateDSForExtraRoute: Removed vpn-to-extraroute with rd {} prefix {} nexthop {}",
 703                         extraRouteRd, prefix, nextHop);
 704                 fibManager.refreshVrfEntry(primaryRd, prefix);
 705                 operTx.delete(VpnUtil.getVpnInterfaceOpDataEntryAdjacencyIdentifier(vpnInterfaceName, vpnName, prefix));
 706                 LOG.info("VPN WITHDRAW: removeOrUpdateDSForExtraRoute: Removed Fib Entry rd {} prefix {} nexthop {}",
 707                         extraRouteRd, prefix, nextHopTunnelIp);
 708                 areNextHopsClearedForRd = true;
 709             }
 710         }
 711         return areNextHopsClearedForRd;
 712     }
 713
 714     static org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance
 715         getVpnInstanceToVpnId(String vpnName, long vpnId, String rd) {
 716         return new VpnInstanceBuilder().setVpnId(vpnId).setVpnInstanceName(vpnName).setVrfId(rd).build();
 717
 718     }
 719
 720     static org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance.VpnIds
 721         getVpnIdToVpnInstance(long vpnId, String vpnName, String rd, boolean isExternalVpn) {
 722         return new org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance
 723             .VpnIdsBuilder().setVpnId(vpnId).setVpnInstanceName(vpnName).setVrfId(rd).setExternalVpn(isExternalVpn)
 724                 .build();
 725
 726     }
 727
 728     static InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to
 729         .vpn.instance.VpnIds> getVpnIdToVpnInstanceIdentifier(long vpnId) {
 730         return InstanceIdentifier.builder(VpnIdToVpnInstance.class).child(org.opendaylight.yang.gen.v1.urn
 731                 .opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance.VpnIds.class,
 732                 new org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance
 733                     .VpnIdsKey(vpnId)).build();
 734     }
 735
 736     /**
 737      * Retrieves the Vpn Name searching by its VPN Tag.
 738      *
 739      * @param vpnId Dataplane identifier of the VPN
 740      * @return the Vpn instance name
 741      */
 742     @Nullable
 743     String getVpnName(long vpnId) {
 744
 745         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn
 746             .instance.VpnIds> id = getVpnIdToVpnInstanceIdentifier(vpnId);
 747         Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance.VpnIds>
 748             vpnInstance
 749             = read(LogicalDatastoreType.CONFIGURATION, id);
 750         String vpnName = null;
 751         if (vpnInstance.isPresent()) {
 752             vpnName = vpnInstance.get().getVpnInstanceName();
 753         }
 754         return vpnName;
 755     }
 756
 757     public static InstanceIdentifier<VpnInstanceOpDataEntry> getVpnInstanceOpDataIdentifier(String rd) {
 758         return InstanceIdentifier.builder(VpnInstanceOpData.class)
 759             .child(VpnInstanceOpDataEntry.class, new VpnInstanceOpDataEntryKey(rd)).build();
 760     }
 761
 762     @Nullable
 763     public VpnInstanceOpDataEntry getVpnInstanceOpData(String rd) {
 764         return read(LogicalDatastoreType.OPERATIONAL, getVpnInstanceOpDataIdentifier(rd)).orNull();
 765     }
 766
 767     @Nullable
 768     VpnInterface getConfiguredVpnInterface(String interfaceName) {
 769         InstanceIdentifier<VpnInterface> interfaceId = getVpnInterfaceIdentifier(interfaceName);
 770         Optional<VpnInterface> configuredVpnInterface = read(LogicalDatastoreType.CONFIGURATION, interfaceId);
 771         if (configuredVpnInterface.isPresent()) {
 772             return configuredVpnInterface.get();
 773         }
 774         return null;
 775     }
 776
 777     boolean isVpnInterfaceConfigured(String interfaceName) {
 778         InstanceIdentifier<VpnInterface> interfaceId = getVpnInterfaceIdentifier(interfaceName);
 779         return read(LogicalDatastoreType.CONFIGURATION, interfaceId).isPresent();
 780     }
 781
 782     public Optional<List<String>> getVpnHandlingIpv4AssociatedWithInterface(String interfaceName) {
 783         InstanceIdentifier<VpnInterface> interfaceId = getVpnInterfaceIdentifier(interfaceName);
 784         Optional<List<String>> vpnOptional = Optional.absent();
 785         Optional<VpnInterface> optConfiguredVpnInterface = read(LogicalDatastoreType.CONFIGURATION, interfaceId);
 786         if (optConfiguredVpnInterface.isPresent()) {
 787             VpnInterface cfgVpnInterface = optConfiguredVpnInterface.get();
 788             java.util.Optional<List<VpnInstanceNames>> optVpnInstanceList =
 789                  java.util.Optional.ofNullable(cfgVpnInterface.getVpnInstanceNames());
 790             if (optVpnInstanceList.isPresent()) {
 791                 List<String> vpnList = new ArrayList<>();
 792                 for (VpnInstanceNames vpnInstance : optVpnInstanceList.get()) {
 793                     vpnList.add(vpnInstance.getVpnName());
 794                 }
 795                 vpnOptional = Optional.of(vpnList);
 796             }
 797         }
 798         return vpnOptional;
 799     }
 800
 801     public static String getIpPrefix(String prefix) {
 802         return prefix.indexOf('/') != -1 ? prefix : NWUtil.toIpPrefix(prefix);
 803     }
 804
 805     static final FutureCallback<Void> DEFAULT_CALLBACK =
 806         new FutureCallback<Void>() {
 807             @Override
 808             public void onSuccess(Void result) {
 809                 LOG.debug("Success in Datastore operation");
 810             }
 811
 812             @Override
 813             public void onFailure(Throwable error) {
 814                 LOG.error("Error in Datastore operation", error);
 815             }
 816
 817         };
 818
 819     @Deprecated
 820     private <T extends DataObject> Optional<T> read(LogicalDatastoreType datastoreType, InstanceIdentifier<T> path) {
 821         try {
 822             return SingleTransactionDataBroker.syncReadOptional(dataBroker, datastoreType, path);
 823         } catch (ReadFailedException e) {
 824             throw new RuntimeException(e);
 825         }
 826     }
 827
 828     @Deprecated
 829     public <T extends DataObject> void syncWrite(LogicalDatastoreType datastoreType, InstanceIdentifier<T> path,
 830                                                  T data) {
 831         try {
 832             SingleTransactionDataBroker.syncWrite(dataBroker, datastoreType, path, data);
 833         } catch (TransactionCommitFailedException e) {
 834             LOG.error("syncWrite: Error writing to datastore (path, data) : ({}, {})", path, data, e);
 835             throw new RuntimeException(e.getMessage(), e);
 836         }
 837     }
 838
 839     @Deprecated
 840     public <T extends DataObject> void syncUpdate(LogicalDatastoreType datastoreType, InstanceIdentifier<T> path,
 841                                                   T data) {
 842         try {
 843             SingleTransactionDataBroker.syncUpdate(dataBroker, datastoreType, path, data);
 844         } catch (TransactionCommitFailedException e) {
 845             LOG.error("syncUpdate: Error writing to datastore (path, data) : ({}, {})", path, data, e);
 846             throw new RuntimeException(e.getMessage(), e);
 847         }
 848     }
 849
 850     static long getRemoteBCGroup(long elanTag) {
 851         return VpnConstants.ELAN_GID_MIN + elanTag % VpnConstants.ELAN_GID_MIN * 2;
 852     }
 853
 854     // interface-index-tag operational container
 855     @Nullable
 856     IfIndexInterface getInterfaceInfoByInterfaceTag(long interfaceTag) {
 857         InstanceIdentifier<IfIndexInterface> interfaceId = getInterfaceInfoEntriesOperationalDataPath(interfaceTag);
 858         Optional<IfIndexInterface> existingInterfaceInfo = read(LogicalDatastoreType.OPERATIONAL, interfaceId);
 859         if (existingInterfaceInfo.isPresent()) {
 860             return existingInterfaceInfo.get();
 861         }
 862         return null;
 863     }
 864
 865     static InstanceIdentifier<IfIndexInterface> getInterfaceInfoEntriesOperationalDataPath(long interfaceTag) {
 866         return InstanceIdentifier.builder(IfIndexesInterfaceMap.class).child(IfIndexInterface.class,
 867             new IfIndexInterfaceKey((int) interfaceTag)).build();
 868     }
 869
 870     @Nullable
 871     ElanTagName getElanInfoByElanTag(long elanTag) {
 872         InstanceIdentifier<ElanTagName> elanId = getElanInfoEntriesOperationalDataPath(elanTag);
 873         Optional<ElanTagName> existingElanInfo = read(LogicalDatastoreType.OPERATIONAL, elanId);
 874         if (existingElanInfo.isPresent()) {
 875             return existingElanInfo.get();
 876         }
 877         return null;
 878     }
 879
 880     static InstanceIdentifier<ElanTagName> getElanInfoEntriesOperationalDataPath(long elanTag) {
 881         return InstanceIdentifier.builder(ElanTagNameMap.class).child(ElanTagName.class,
 882             new ElanTagNameKey(elanTag)).build();
 883     }
 884
 885     static void removePrefixToInterfaceForVpnId(long vpnId, @NonNull TypedWriteTransaction<Operational> operTx) {
 886         // Clean up PrefixToInterface Operational DS
 887         operTx.delete(InstanceIdentifier.builder(
 888                     PrefixToInterface.class).child(VpnIds.class, new VpnIdsKey(vpnId)).build());
 889     }
 890
 891     static void removeVpnExtraRouteForVpn(String vpnName, @NonNull TypedWriteTransaction<Operational> operTx) {
 892         // Clean up VPNExtraRoutes Operational DS
 893         operTx.delete(InstanceIdentifier.builder(VpnToExtraroutes.class).child(Vpn.class, new VpnKey(vpnName)).build());
 894     }
 895
 896     @SuppressWarnings("checkstyle:IllegalCatch")
 897     static void removeVpnOpInstance(String vpnName, @NonNull TypedWriteTransaction<Operational> operTx) {
 898         // Clean up VPNInstanceOpDataEntry
 899         operTx.delete(getVpnInstanceOpDataIdentifier(vpnName));
 900     }
 901
 902     static void removeVpnInstanceToVpnId(String vpnName, @NonNull TypedWriteTransaction<Configuration> confTx) {
 903         confTx.delete(VpnOperDsUtils.getVpnInstanceToVpnIdIdentifier(vpnName));
 904     }
 905
 906     static void removeVpnIdToVpnInstance(long vpnId, @NonNull TypedWriteTransaction<Configuration> confTx) {
 907         confTx.delete(getVpnIdToVpnInstanceIdentifier(vpnId));
 908     }
 909
 910     static void removeL3nexthopForVpnId(long vpnId, @NonNull TypedWriteTransaction<Operational> operTx) {
 911         // Clean up L3NextHop Operational DS
 912         operTx.delete(InstanceIdentifier.builder(L3nexthop.class).child(
 913                                     VpnNexthops.class, new VpnNexthopsKey(vpnId)).build());
 914     }
 915
 916     void scheduleVpnInterfaceForRemoval(String interfaceName, BigInteger dpnId, String vpnInstanceName,
 917                                         @Nullable TypedWriteTransaction<Operational> writeOperTxn) {
 918         InstanceIdentifier<VpnInterfaceOpDataEntry> interfaceId =
 919                 getVpnInterfaceOpDataEntryIdentifier(interfaceName, vpnInstanceName);
 920         VpnInterfaceOpDataEntry interfaceToUpdate =
 921             new VpnInterfaceOpDataEntryBuilder().withKey(new VpnInterfaceOpDataEntryKey(interfaceName,
 922             vpnInstanceName)).setName(interfaceName).setDpnId(dpnId).setVpnInstanceName(vpnInstanceName)
 923             .build();
 924         if (writeOperTxn != null) {
 925             writeOperTxn.merge(interfaceId, interfaceToUpdate, true);
 926         } else {
 927             syncUpdate(LogicalDatastoreType.OPERATIONAL, interfaceId, interfaceToUpdate);
 928         }
 929     }
 930
 931     public void createLearntVpnVipToPort(String vpnName, String fixedIp, String portName, String macAddress,
 932             TypedWriteTransaction<Operational> writeOperTxn) {
 933         synchronized ((vpnName + fixedIp).intern()) {
 934             InstanceIdentifier<LearntVpnVipToPort> id = buildLearntVpnVipToPortIdentifier(vpnName, fixedIp);
 935             LearntVpnVipToPortBuilder builder =
 936                     new LearntVpnVipToPortBuilder().withKey(new LearntVpnVipToPortKey(fixedIp, vpnName)).setVpnName(
 937                             vpnName).setPortFixedip(fixedIp).setPortName(portName)
 938                             .setMacAddress(macAddress.toLowerCase(Locale.getDefault()))
 939                             .setCreationTime(new SimpleDateFormat("MM/dd/yyyy h:mm:ss a").format(new Date()));
 940             if (writeOperTxn != null) {
 941                 writeOperTxn.put(id, builder.build(), true);
 942             } else {
 943                 syncWrite(LogicalDatastoreType.OPERATIONAL, id, builder.build());
 944             }
 945             LOG.debug("createLearntVpnVipToPort: ARP/NA learned for fixedIp: {}, vpn {}, interface {}, mac {},"
 946                     + " added to LearntVpnVipToPort DS", fixedIp, vpnName, portName, macAddress);
 947         }
 948     }
 949
 950     static InstanceIdentifier<LearntVpnVipToPort> buildLearntVpnVipToPortIdentifier(String vpnName,
 951             String fixedIp) {
 952         return InstanceIdentifier.builder(LearntVpnVipToPortData.class).child(LearntVpnVipToPort.class,
 953                 new LearntVpnVipToPortKey(fixedIp, vpnName)).build();
 954     }
 955
 956     void removeLearntVpnVipToPort(String vpnName, String fixedIp,
 957                                   @Nullable TypedWriteTransaction<Operational> writeOperTxn) {
 958         synchronized ((vpnName + fixedIp).intern()) {
 959             InstanceIdentifier<LearntVpnVipToPort> id = buildLearntVpnVipToPortIdentifier(vpnName, fixedIp);
 960             if (writeOperTxn != null) {
 961                 writeOperTxn.delete(id);
 962             } else {
 963                 MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
 964             }
 965             LOG.debug("removeLearntVpnVipToPort: Deleted LearntVpnVipToPort entry for fixedIp: {}, vpn {}",
 966                 fixedIp, vpnName);
 967         }
 968     }
 969
 970     protected static void removeVpnPortFixedIpToPort(DataBroker broker, String vpnName, String fixedIp,
 971                                                      @Nullable TypedWriteTransaction<Configuration> writeConfigTxn) {
 972         synchronized ((vpnName + fixedIp).intern()) {
 973             InstanceIdentifier<VpnPortipToPort> id = buildVpnPortipToPortIdentifier(vpnName, fixedIp);
 974             if (writeConfigTxn != null) {
 975                 writeConfigTxn.delete(id);
 976             } else {
 977                 MDSALUtil.syncDelete(broker, LogicalDatastoreType.CONFIGURATION, id);
 978             }
 979             LOG.debug("removeVpnPortFixedIpToPort: Deleted VpnPortipToPort entry for fixedIp: {}, vpn {}",
 980                 fixedIp, vpnName);
 981         }
 982     }
 983
 984     public void createLearntVpnVipToPortEvent(String vpnName, String srcIp, String destIP, String portName,
 985                                               String macAddress, LearntVpnVipToPortEventAction action,
 986                                               TypedWriteTransaction<Operational> writeOperTxn) {
 987         String eventId = MicroTimestamp.INSTANCE.get();
 988
 989         InstanceIdentifier<LearntVpnVipToPortEvent> id = buildLearntVpnVipToPortEventIdentifier(eventId);
 990         LearntVpnVipToPortEventBuilder builder = new LearntVpnVipToPortEventBuilder().withKey(
 991                 new LearntVpnVipToPortEventKey(eventId)).setVpnName(vpnName).setSrcFixedip(srcIp)
 992                 .setDestFixedip(destIP).setPortName(portName)
 993                 .setMacAddress(macAddress.toLowerCase(Locale.getDefault())).setEventAction(action);
 994         if (writeOperTxn != null) {
 995             writeOperTxn.delete(id);
 996         } else {
 997             syncWrite(LogicalDatastoreType.OPERATIONAL, id, builder.build());
 998         }
 999         LOG.info("createLearntVpnVipToPortEvent: ARP learn event created for fixedIp: {}, vpn {}, interface {},"
1000                 + " mac {} action {} eventId {}", srcIp, vpnName, portName, macAddress, action, eventId);
1001     }
1002
1003     private static InstanceIdentifier<LearntVpnVipToPortEvent> buildLearntVpnVipToPortEventIdentifier(String eventId) {
1004         InstanceIdentifier<LearntVpnVipToPortEvent> id = InstanceIdentifier.builder(LearntVpnVipToPortEventData.class)
1005                 .child(LearntVpnVipToPortEvent.class, new LearntVpnVipToPortEventKey(eventId)).build();
1006         return id;
1007     }
1008
1009     public void removeLearntVpnVipToPortEvent(String eventId,
1010             @Nullable TypedWriteTransaction<Operational> writeOperTxn) {
1011         InstanceIdentifier<LearntVpnVipToPortEvent> id = buildLearntVpnVipToPortEventIdentifier(eventId);
1012         if (writeOperTxn != null) {
1013             writeOperTxn.delete(id);
1014         } else {
1015             MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
1016         }
1017         LOG.info("removeLearntVpnVipToPortEvent: Deleted Event {}", eventId);
1018
1019     }
1020
1021     // TODO Clean up the exception handling
1022     @SuppressWarnings("checkstyle:IllegalCatch")
1023     public void removeMipAdjAndLearntIp(String vpnName, String vpnInterface, String prefix) {
1024         synchronized ((vpnName + prefix).intern()) {
1025             try {
1026                 String ip = VpnUtil.getIpPrefix(prefix);
1027                 InstanceIdentifier<VpnInterfaceOpDataEntry> vpnInterfaceOpId = VpnUtil
1028                         .getVpnInterfaceOpDataEntryIdentifier(vpnInterface, vpnName);
1029                 InstanceIdentifier<AdjacenciesOp> path = vpnInterfaceOpId.augmentation(AdjacenciesOp.class);
1030                 Optional<AdjacenciesOp> adjacenciesOp = read(LogicalDatastoreType.OPERATIONAL, path);
1031                 if (adjacenciesOp.isPresent()) {
1032                     InstanceIdentifier<Adjacency> adjacencyIdentifier = InstanceIdentifier.builder(VpnInterfaces.class)
1033                             .child(VpnInterface.class, new VpnInterfaceKey(vpnInterface))
1034                             .augmentation(Adjacencies.class).child(Adjacency.class, new AdjacencyKey(ip)).build();
1035                     MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.CONFIGURATION, adjacencyIdentifier);
1036                     LOG.info("removeMipAdjAndLearntIp: Successfully Deleted Adjacency {} from interface {} vpn {}", ip,
1037                             vpnInterface, vpnName);
1038                 }
1039                 InstanceIdentifier<LearntVpnVipToPort> id = buildLearntVpnVipToPortIdentifier(vpnName, prefix);
1040                 MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
1041                 LOG.info("removeMipAdjAndLearntIp: Delete learned ARP for fixedIp: {}, vpn {} removed from"
1042                         + "VpnPortipToPort DS", prefix, vpnName);
1043             } catch (Exception e) {
1044                 LOG.error("removeMipAdjAndLearntIp: Exception Deleting learned Ip: {} interface {} vpn {} from "
1045                         + "LearntVpnPortipToPort DS", prefix, vpnInterface, vpnName, e);
1046             }
1047             VpnUtil.removeVpnPortFixedIpToPort(dataBroker, vpnName, prefix, null);
1048         }
1049     }
1050
1051     public void removeMipAdjacency(String vpnInterface, String ipAddress) {
1052         String prefix = VpnUtil.getIpPrefix(ipAddress);
1053         InstanceIdentifier<Adjacency> adjacencyIdentifier = getAdjacencyIdentifier(vpnInterface, prefix);
1054         try {
1055             SingleTransactionDataBroker.syncDelete(dataBroker, LogicalDatastoreType.CONFIGURATION, adjacencyIdentifier);
1056         } catch (TransactionCommitFailedException e) {
1057             if (e.getCause() instanceof ModifiedNodeDoesNotExistException) {
1058                 LOG.debug("vpnInterface {} is already deleted. prefix={}", vpnInterface, prefix);
1059             } else {
1060                 LOG.error("Failed to delete adjacency for vpnInterface {}, prefix {}", vpnInterface, prefix, e);
1061             }
1062         }
1063     }
1064
1065     static InstanceIdentifier<NetworkMap> buildNetworkMapIdentifier(Uuid networkId) {
1066         return InstanceIdentifier.builder(NetworkMaps.class).child(NetworkMap.class, new
1067                 NetworkMapKey(networkId)).build();
1068     }
1069
1070     static InstanceIdentifier<SubnetOpDataEntry> buildSubnetOpDataEntryInstanceIdentifier(Uuid subnetId) {
1071         return InstanceIdentifier.builder(SubnetOpData.class)
1072                 .child(SubnetOpDataEntry.class, new SubnetOpDataEntryKey(subnetId)).build();
1073     }
1074
1075     static InstanceIdentifier<VpnPortipToPort> buildVpnPortipToPortIdentifier(String vpnName, String fixedIp) {
1076         return InstanceIdentifier.builder(NeutronVpnPortipPortData.class).child(VpnPortipToPort.class,
1077                 new VpnPortipToPortKey(fixedIp, vpnName)).build();
1078     }
1079
1080     @Nullable
1081     public VpnPortipToPort getNeutronPortFromVpnPortFixedIp(String vpnName, String fixedIp) {
1082         InstanceIdentifier<VpnPortipToPort> id = buildVpnPortipToPortIdentifier(vpnName, fixedIp);
1083         Optional<VpnPortipToPort> vpnPortipToPortData = read(LogicalDatastoreType.CONFIGURATION, id);
1084         if (vpnPortipToPortData.isPresent()) {
1085             return vpnPortipToPortData.get();
1086         }
1087         return null;
1088     }
1089
1090     @Nullable
1091     public static VpnPortipToPort getNeutronPortFromVpnPortFixedIp(TypedReadTransaction<Configuration> confTx,
1092             String vpnName, String fixedIp) {
1093         InstanceIdentifier<VpnPortipToPort> id = buildVpnPortipToPortIdentifier(vpnName, fixedIp);
1094         try {
1095             return confTx.read(id).get().orNull();
1096         } catch (InterruptedException | ExecutionException e) {
1097             throw new RuntimeException(e);
1098         }
1099     }
1100
1101     @Nullable
1102     public LearntVpnVipToPort getLearntVpnVipToPort(String vpnName, String fixedIp) {
1103         InstanceIdentifier<LearntVpnVipToPort> id = buildLearntVpnVipToPortIdentifier(vpnName, fixedIp);
1104         Optional<LearntVpnVipToPort> learntVpnVipToPort = read(LogicalDatastoreType.OPERATIONAL, id);
1105         if (learntVpnVipToPort.isPresent()) {
1106             return learntVpnVipToPort.get();
1107         }
1108         return null;
1109     }
1110
1111     @NonNull
1112     List<BigInteger> getDpnsOnVpn(String vpnInstanceName) {
1113         List<BigInteger> result = new ArrayList<>();
1114         String rd = getVpnRd(vpnInstanceName);
1115         if (rd == null) {
1116             LOG.debug("getDpnsOnVpn: Could not find Route-Distinguisher for VpnName={}", vpnInstanceName);
1117             return result;
1118         }
1119         VpnInstanceOpDataEntry vpnInstanceOpData = getVpnInstanceOpData(rd);
1120         if (vpnInstanceOpData == null) {
1121             LOG.debug("getDpnsOnVpn: Could not find OpState for VpnName={}", vpnInstanceName);
1122             return result;
1123         }
1124         List<VpnToDpnList> vpnToDpnList = vpnInstanceOpData.getVpnToDpnList();
1125         if (vpnToDpnList == null) {
1126             LOG.debug("getDpnsOnVpn: Could not find DPN footprint for VpnName={}", vpnInstanceName);
1127             return result;
1128         }
1129         for (VpnToDpnList vpnToDpn : vpnToDpnList) {
1130             result.add(vpnToDpn.getDpnId());
1131         }
1132         return result;
1133     }
1134
1135     @Nullable
1136     String getAssociatedExternalRouter(String extIp) {
1137         InstanceIdentifier<ExtRouters> extRouterInstanceIndentifier =
1138                 InstanceIdentifier.builder(ExtRouters.class).build();
1139         Optional<ExtRouters> extRouterData = read(LogicalDatastoreType.CONFIGURATION, extRouterInstanceIndentifier);
1140         if (!extRouterData.isPresent()) {
1141             return null;
1142         }
1143
1144         // We need to find the router associated with the src ip of this packet.
1145         // This case is either SNAT, in which case the src ip is the same as the
1146         // router's external ip, or FIP in which case the src ip is in the router's
1147         // external leg's subnet. We first check the SNAT case because it is much
1148         // cheaper to do so because it does not require (potentially, there is a
1149         // cache) an datastore read of the neutron subnet for each external IP.
1150
1151         String routerName = null;
1152
1153         for (Routers routerData : extRouterData.get().nonnullRouters()) {
1154             List<ExternalIps> externalIps = routerData.nonnullExternalIps();
1155             for (ExternalIps externalIp : externalIps) {
1156                 if (Objects.equals(externalIp.getIpAddress(), extIp)) {
1157                     routerName = routerData.getRouterName();
1158                     break;
1159                 }
1160             }
1161         }
1162
1163         if (routerName != null) {
1164             return routerName;
1165         }
1166
1167         for (Routers routerData : extRouterData.get().nonnullRouters()) {
1168             List<ExternalIps> externalIps = routerData.nonnullExternalIps();
1169             for (ExternalIps externalIp : externalIps) {
1170                 Subnet neutronSubnet = neutronVpnService.getNeutronSubnet(externalIp.getSubnetId());
1171                 if (neutronSubnet == null) {
1172                     LOG.warn("Failed to retrieve subnet {} referenced by router {}",
1173                             externalIp.getSubnetId(), routerData);
1174                     continue;
1175                 }
1176                 if (NWUtil.isIpAddressInRange(IpAddressBuilder.getDefaultInstance(extIp), neutronSubnet.getCidr())) {
1177                     routerName = routerData.getRouterName();
1178                     break;
1179                 }
1180             }
1181         }
1182
1183         return routerName;
1184     }
1185
1186     @Nullable
1187     public String getAssociatedExternalSubnet(String extIp) {
1188         InstanceIdentifier<ExtRouters> extRouterInstanceIndentifier =
1189                 InstanceIdentifier.builder(ExtRouters.class).build();
1190         Optional<ExtRouters> extRouterData = read(LogicalDatastoreType.CONFIGURATION, extRouterInstanceIndentifier);
1191         if (!extRouterData.isPresent() || extRouterData.get().getRouters() == null) {
1192             return null;
1193         }
1194         for (Routers routerData : extRouterData.get().getRouters()) {
1195             List<ExternalIps> externalIps = routerData.getExternalIps();
1196             if (externalIps != null) {
1197                 for (ExternalIps externalIp : externalIps) {
1198                     Subnet neutronSubnet = neutronVpnService.getNeutronSubnet(externalIp.getSubnetId());
1199                     if (neutronSubnet == null) {
1200                         LOG.warn("Failed to retrieve subnet {} referenced by router {}",
1201                             externalIp.getSubnetId(), routerData);
1202                         continue;
1203                     }
1204                     if (NWUtil.isIpAddressInRange(IpAddressBuilder.getDefaultInstance(extIp),
1205                             neutronSubnet.getCidr())) {
1206                         return neutronSubnet.getUuid().getValue();
1207                     }
1208                 }
1209             }
1210         }
1211         return null;
1212     }
1213
1214     static InstanceIdentifier<Routers> buildRouterIdentifier(String routerId) {
1215         return InstanceIdentifier.builder(ExtRouters.class).child(Routers.class, new RoutersKey(routerId)).build();
1216     }
1217
1218     @Nullable
1219     Networks getExternalNetwork(Uuid networkId) {
1220         InstanceIdentifier<Networks> netsIdentifier = InstanceIdentifier.builder(ExternalNetworks.class)
1221             .child(Networks.class, new NetworksKey(networkId)).build();
1222         Optional<Networks> optionalNets = read(LogicalDatastoreType.CONFIGURATION, netsIdentifier);
1223         return optionalNets.isPresent() ? optionalNets.get() : null;
1224     }
1225
1226     @Nullable
1227     Uuid getExternalNetworkVpnId(Uuid networkId) {
1228         Networks extNetwork = getExternalNetwork(networkId);
1229         return extNetwork != null ? extNetwork.getVpnid() : null;
1230     }
1231
1232     @NonNull
1233     public List<Uuid> getExternalNetworkRouterIds(Uuid networkId) {
1234         Networks extNetwork = getExternalNetwork(networkId);
1235         return extNetwork != null && extNetwork.getRouterIds() != null ? extNetwork.getRouterIds() : emptyList();
1236     }
1237
1238     @Nullable
1239     Routers getExternalRouter(String routerId) {
1240         InstanceIdentifier<Routers> id = InstanceIdentifier.builder(ExtRouters.class).child(Routers.class,
1241                 new RoutersKey(routerId)).build();
1242         Optional<Routers> routerData = read(LogicalDatastoreType.CONFIGURATION, id);
1243         return routerData.isPresent() ? routerData.get() : null;
1244     }
1245
1246     @Nullable
1247     Routers getExternalRouter(TypedReadTransaction<Configuration> tx, String routerId)
1248             throws ExecutionException, InterruptedException {
1249         InstanceIdentifier<Routers> id = InstanceIdentifier.builder(ExtRouters.class).child(Routers.class,
1250             new RoutersKey(routerId)).build();
1251         return tx.read(id).get().orNull();
1252     }
1253
1254     static InstanceIdentifier<Subnetmaps> buildSubnetMapsWildCardPath() {
1255         return InstanceIdentifier.create(Subnetmaps.class);
1256     }
1257
1258     FlowEntity buildL3vpnGatewayFlow(BigInteger dpId, String gwMacAddress, long vpnId,
1259                                                    long subnetVpnId) {
1260         List<MatchInfo> mkMatches = new ArrayList<>();
1261         Subnetmap smap = null;
1262         mkMatches.add(new MatchMetadata(MetaDataUtil.getVpnIdMetadata(vpnId), MetaDataUtil.METADATA_MASK_VRFID));
1263         mkMatches.add(new MatchEthernetDestination(new MacAddress(gwMacAddress)));
1264         List<InstructionInfo> mkInstructions = new ArrayList<>();
1265         mkInstructions.add(new InstructionGotoTable(NwConstants.L3_FIB_TABLE));
1266         if (subnetVpnId != VpnConstants.INVALID_ID) {
1267             String vpnName = getVpnName(subnetVpnId);
1268             if (vpnName != null) {
1269                 smap = getSubnetmapFromItsUuid(Uuid.getDefaultInstance(vpnName));
1270                 if (smap != null && smap.getSubnetIp() != null) {
1271                     IpVersionChoice ipVersionChoice = getIpVersionFromString(smap.getSubnetIp());
1272                     if (ipVersionChoice == IpVersionChoice.IPV4) {
1273                         mkMatches.add(MatchEthernetType.IPV4);
1274                     } else {
1275                         mkMatches.add(MatchEthernetType.IPV6);
1276                     }
1277                 }
1278             }
1279             BigInteger subnetIdMetaData = MetaDataUtil.getVpnIdMetadata(subnetVpnId);
1280             mkInstructions.add(new InstructionWriteMetadata(subnetIdMetaData, MetaDataUtil.METADATA_MASK_VRFID));
1281         }
1282         String flowId = getL3VpnGatewayFlowRef(NwConstants.L3_GW_MAC_TABLE, dpId, vpnId, gwMacAddress, subnetVpnId);
1283         return MDSALUtil.buildFlowEntity(dpId, NwConstants.L3_GW_MAC_TABLE,
1284                 flowId, 20, flowId, 0, 0, NwConstants.COOKIE_L3_GW_MAC_TABLE, mkMatches, mkInstructions);
1285     }
1286
1287     static String getL3VpnGatewayFlowRef(short l3GwMacTable, BigInteger dpId, long vpnId, String gwMacAddress,
1288                                          long subnetVpnId) {
1289         return gwMacAddress + NwConstants.FLOWID_SEPARATOR + vpnId + NwConstants.FLOWID_SEPARATOR + dpId
1290             + NwConstants.FLOWID_SEPARATOR + l3GwMacTable + NwConstants.FLOWID_SEPARATOR + subnetVpnId;
1291     }
1292
1293     void lockSubnet(String subnetId) {
1294         TryLockInput input =
1295             new TryLockInputBuilder().setLockName(subnetId).setTime(3000L).setTimeUnit(TimeUnits.Milliseconds).build();
1296         Future<RpcResult<TryLockOutput>> result = lockManager.tryLock(input);
1297         try {
1298             if (result != null && result.get().isSuccessful()) {
1299                 LOG.debug("lockSubnet: Acquired lock for {}", subnetId);
1300             } else {
1301                 LOG.error("Unable to get lock for subnet {}", subnetId);
1302                 throw new RuntimeException("Unable to get lock for subnet " + subnetId);
1303             }
1304         } catch (InterruptedException | ExecutionException e) {
1305             LOG.error("Unable to get lock for subnet {}", subnetId, e);
1306             throw new RuntimeException("Unable to get lock for subnet " + subnetId, e);
1307         }
1308     }
1309
1310     // We store the cause, which is what we really care about
1311     @SuppressWarnings("checkstyle:AvoidHidingCauseException")
1312     public void unlockSubnet(String subnetId) {
1313         UnlockInput input = new UnlockInputBuilder().setLockName(subnetId).build();
1314         Future<RpcResult<UnlockOutput>> result = lockManager.unlock(input);
1315         try {
1316             if (result != null && result.get().isSuccessful()) {
1317                 LOG.debug("unlockSubnet: Unlocked {}", subnetId);
1318             } else {
1319                 LOG.debug("unlockSubnet: Unable to unlock subnet {}", subnetId);
1320             }
1321         } catch (InterruptedException | ExecutionException e) {
1322             LOG.error("unlockSubnet: Unable to unlock subnet {}", subnetId);
1323             throw new RuntimeException(String.format("Unable to unlock subnetId %s", subnetId), e.getCause());
1324         }
1325     }
1326
1327     public Optional<IpAddress> getGatewayIpAddressFromInterface(MacEntry macEntry) {
1328         Optional<IpAddress> gatewayIp = Optional.absent();
1329         String srcInterface = macEntry.getInterfaceName();
1330         InetAddress hiddenIp = macEntry.getIpAddress();
1331         if (neutronVpnService != null) {
1332             //TODO(Gobinath): Need to fix this as assuming port will belong to only one Subnet would be incorrect"
1333             Port port = neutronVpnService.getNeutronPort(srcInterface);
1334             if (port != null && port.getFixedIps() != null) {
1335                 for (FixedIps portIp : port.getFixedIps()) {
1336                     if (doesInterfaceAndHiddenIpAddressTypeMatch(hiddenIp, portIp)) {
1337                         gatewayIp =
1338                                 Optional.of(neutronVpnService.getNeutronSubnet(portIp.getSubnetId()).getGatewayIp());
1339                         break;
1340                     }
1341                 }
1342             }
1343         } else {
1344             LOG.error("getGatewayIpAddressFromInterface: neutron vpn service is not configured."
1345                     + " Failed for interface {}.", srcInterface);
1346         }
1347         return gatewayIp;
1348     }
1349
1350     private boolean doesInterfaceAndHiddenIpAddressTypeMatch(InetAddress hiddenIp, FixedIps portIp) {
1351         return hiddenIp instanceof Inet4Address && portIp.getIpAddress().getIpv4Address() != null
1352                 || hiddenIp instanceof Inet6Address && portIp.getIpAddress().getIpv6Address() != null;
1353     }
1354
1355     public Optional<String> getGWMacAddressFromInterface(MacEntry macEntry, IpAddress gatewayIp) {
1356         Optional<String> gatewayMac = Optional.absent();
1357         long vpnId = getVpnId(macEntry.getVpnName());
1358         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn
1359             .instance.VpnIds>
1360             vpnIdsInstanceIdentifier = VpnUtil.getVpnIdToVpnInstanceIdentifier(vpnId);
1361         Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance.VpnIds>
1362             vpnIdsOptional = read(LogicalDatastoreType.CONFIGURATION, vpnIdsInstanceIdentifier);
1363         if (!vpnIdsOptional.isPresent()) {
1364             LOG.error("getGWMacAddressFromInterface: VPN {} not configured", vpnId);
1365             return gatewayMac;
1366         }
1367         VpnPortipToPort vpnTargetIpToPort =
1368                 getNeutronPortFromVpnPortFixedIp(macEntry.getVpnName(), gatewayIp.stringValue());
1369         if (vpnTargetIpToPort != null && vpnTargetIpToPort.isSubnetIp()) {
1370             gatewayMac = Optional.of(vpnTargetIpToPort.getMacAddress());
1371         } else {
1372             org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911
1373                     .vpn.id.to.vpn.instance.VpnIds vpnIds = vpnIdsOptional.get();
1374             if (vpnIds.isExternalVpn()) {
1375                 gatewayMac = InterfaceUtils.getMacAddressForInterface(dataBroker, macEntry.getInterfaceName());
1376             }
1377         }
1378         return gatewayMac;
1379     }
1380
1381     void setupGwMacIfExternalVpn(BigInteger dpnId, String interfaceName, long vpnId,
1382                                  TypedReadWriteTransaction<Configuration> writeInvTxn, int addOrRemove, String gwMac)
1383             throws ExecutionException, InterruptedException {
1384         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance
1385             .VpnIds> vpnIdsInstanceIdentifier = getVpnIdToVpnInstanceIdentifier(vpnId);
1386         Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance
1387             .VpnIds> vpnIdsOptional = writeInvTxn.read(vpnIdsInstanceIdentifier).get();
1388         if (vpnIdsOptional.isPresent() && vpnIdsOptional.get().isExternalVpn()) {
1389             if (gwMac == null) {
1390                 LOG.error("setupGwMacIfExternalVpn: Failed to get gwMacAddress for interface {} on dpn {} vpn {}",
1391                         interfaceName, dpnId.toString(), vpnIdsOptional.get().getVpnInstanceName());
1392                 return;
1393             }
1394             FlowEntity flowEntity = buildL3vpnGatewayFlow(dpnId, gwMac, vpnId, VpnConstants.INVALID_ID);
1395             if (addOrRemove == NwConstants.ADD_FLOW) {
1396                 mdsalManager.addFlow(writeInvTxn, flowEntity);
1397             } else if (addOrRemove == NwConstants.DEL_FLOW) {
1398                 mdsalManager.removeFlow(writeInvTxn, flowEntity);
1399             }
1400         }
1401     }
1402
1403     public Optional<String> getVpnSubnetGatewayIp(final Uuid subnetUuid) {
1404         Optional<String> gwIpAddress = Optional.absent();
1405         final SubnetKey subnetkey = new SubnetKey(subnetUuid);
1406         final InstanceIdentifier<Subnet> subnetidentifier = InstanceIdentifier.create(Neutron.class)
1407                 .child(Subnets.class)
1408                 .child(Subnet.class, subnetkey);
1409         final Optional<Subnet> subnet = read(LogicalDatastoreType.CONFIGURATION, subnetidentifier);
1410         if (subnet.isPresent()) {
1411             Class<? extends IpVersionBase> ipVersionBase = subnet.get().getIpVersion();
1412             if (IpVersionV4.class.equals(ipVersionBase)) {
1413                 Subnetmap subnetmap = getSubnetmapFromItsUuid(subnetUuid);
1414                 if (subnetmap != null && subnetmap.getRouterInterfaceFixedIp() != null) {
1415                     LOG.trace("getVpnSubnetGatewayIp: Obtained subnetMap {} for vpn interface",
1416                             subnetmap.getId().getValue());
1417                     gwIpAddress = Optional.of(subnetmap.getRouterInterfaceFixedIp());
1418                 } else {
1419                     //For direct L3VPN to network association (no router) continue to use subnet-gateway IP
1420                     IpAddress gwIp = subnet.get().getGatewayIp();
1421                     if (gwIp != null && gwIp.getIpv4Address() != null) {
1422                         gwIpAddress = Optional.of(gwIp.getIpv4Address().getValue());
1423                     }
1424                 }
1425                 LOG.trace("getVpnSubnetGatewayIp: Obtained subnet-gw ip {} for vpn interface",
1426                         gwIpAddress.get());
1427             }
1428         }
1429         return gwIpAddress;
1430     }
1431
1432     @Nullable
1433     RouterToNaptSwitch getRouterToNaptSwitch(String routerName) {
1434         InstanceIdentifier<RouterToNaptSwitch> id = InstanceIdentifier.builder(NaptSwitches.class)
1435                 .child(RouterToNaptSwitch.class, new RouterToNaptSwitchKey(routerName)).build();
1436         Optional<RouterToNaptSwitch> routerToNaptSwitchData = read(LogicalDatastoreType.CONFIGURATION, id);
1437         return routerToNaptSwitchData.isPresent() ? routerToNaptSwitchData.get() : null;
1438     }
1439
1440     static InstanceIdentifier<Subnetmap> buildSubnetmapIdentifier(Uuid subnetId) {
1441         return InstanceIdentifier.builder(Subnetmaps.class)
1442         .child(Subnetmap.class, new SubnetmapKey(subnetId)).build();
1443
1444     }
1445
1446     @Nullable
1447     BigInteger getPrimarySwitchForRouter(String routerName) {
1448         RouterToNaptSwitch routerToNaptSwitch = getRouterToNaptSwitch(routerName);
1449         return routerToNaptSwitch != null ? routerToNaptSwitch.getPrimarySwitchId() : null;
1450     }
1451
1452     static boolean isL3VpnOverVxLan(Long l3Vni) {
1453         return l3Vni != null && l3Vni != 0;
1454     }
1455
1456     /**
1457      * Retrieves the primary rd of a vpn instance
1458      * Primary rd will be the first rd in the list of rds configured for a vpn instance
1459      * If rd list is empty, primary rd will be vpn instance name
1460      * Use this function only during create operation cycles. For other operations, use getVpnRd() method.
1461      *
1462      * @param vpnName Name of the VPN
1463      * @return the primary rd of the VPN
1464      */
1465     public String getPrimaryRd(String vpnName) {
1466         // Retrieves the VPN Route Distinguisher by its Vpn instance name
1467         String rd = getVpnRd(vpnName);
1468         if (rd != null) {
1469             return rd;
1470         }
1471         InstanceIdentifier<VpnInstance> id  = getVpnInstanceIdentifier(vpnName);
1472         Optional<VpnInstance> vpnInstance = read(LogicalDatastoreType.CONFIGURATION, id);
1473         if (vpnInstance.isPresent()) {
1474             return getPrimaryRd(vpnInstance.get());
1475         }
1476         return vpnName;
1477     }
1478
1479     /**
1480      * Retrieves the primary rd of a vpn instance
1481      * Primary rd will be the first rd in the list of rds configured for a vpn instance
1482      * If rd list is empty, primary rd will be vpn instance name
1483      * Use this function only during create operation cycles. For other operations, use getVpnRd() method.
1484      *
1485      * @param vpnInstance Config Vpn Instance Object
1486      * @return the primary rd of the VPN
1487      */
1488     static String getPrimaryRd(VpnInstance vpnInstance) {
1489         List<String> rds = null;
1490         if (vpnInstance != null) {
1491             rds = getListOfRdsFromVpnInstance(vpnInstance);
1492         }
1493         return rds == null || rds.isEmpty() ? vpnInstance.getVpnInstanceName() : rds.get(0);
1494     }
1495
1496     static boolean isBgpVpn(String vpnName, String primaryRd) {
1497         return !vpnName.equals(primaryRd);
1498     }
1499
1500     java.util.Optional<String> allocateRdForExtraRouteAndUpdateUsedRdsMap(long vpnId, @Nullable Long parentVpnId,
1501                                                                           String prefix, String vpnName,
1502                                                                           String nextHop, BigInteger dpnId) {
1503         //Check if rd is already allocated for this extraroute behind the same VM. If yes, reuse it.
1504         //This is particularly useful during reboot scenarios.
1505         java.util.Optional<String> allocatedRd = VpnExtraRouteHelper
1506                 .getRdAllocatedForExtraRoute(dataBroker, vpnId, prefix, nextHop);
1507         if (allocatedRd.isPresent()) {
1508             return allocatedRd;
1509         }
1510
1511         //Check if rd is already allocated for this extraroute behind the same CSS. If yes, reuse it
1512         List<String> usedRds = VpnExtraRouteHelper.getUsedRds(dataBroker, vpnId, prefix);
1513         for (String usedRd : usedRds) {
1514             Optional<Routes> vpnExtraRoutes = VpnExtraRouteHelper.getVpnExtraroutes(dataBroker,
1515                     vpnName, usedRd, prefix);
1516             if (vpnExtraRoutes.isPresent()) {
1517                 String nextHopIp = vpnExtraRoutes.get().getNexthopIpList().get(0);
1518                 // In case of VPN importing the routes, the interface is not present in the VPN
1519                 // and has to be fetched from the VPN from which it imports
1520                 Optional<Prefixes> prefixToInterface =
1521                         getPrefixToInterface(parentVpnId != null ? parentVpnId : vpnId, nextHopIp);
1522                 if (prefixToInterface.isPresent() && dpnId.equals(prefixToInterface.get().getDpnId())) {
1523                     syncUpdate(LogicalDatastoreType.CONFIGURATION,
1524                             VpnExtraRouteHelper.getUsedRdsIdentifier(vpnId, prefix, nextHop),
1525                             getRdsBuilder(nextHop, usedRd).build());
1526                     return java.util.Optional.of(usedRd);
1527                 }
1528             }
1529         }
1530         List<String> availableRds = getVpnRdsFromVpnInstanceConfig(vpnName);
1531         String rd;
1532         if (availableRds.isEmpty()) {
1533             rd = dpnId.toString();
1534             LOG.debug("Internal vpn {} Returning DpnId {} as rd", vpnName, rd);
1535         } else {
1536             LOG.trace("Removing used rds {} from available rds {} vpnid {} . prefix is {} , vpname- {}, dpnId- {}",
1537                     usedRds, availableRds, vpnId, prefix, vpnName, dpnId);
1538             availableRds.removeAll(usedRds);
1539             if (availableRds.isEmpty()) {
1540                 LOG.error("No rd available from VpnInstance to allocate for prefix {}", prefix);
1541                 return java.util.Optional.empty();
1542             }
1543             // If rd is not allocated for this prefix or if extra route is behind different OVS, select a new rd.
1544             rd = availableRds.get(0);
1545         }
1546         syncUpdate(LogicalDatastoreType.CONFIGURATION,
1547                 VpnExtraRouteHelper.getUsedRdsIdentifier(vpnId, prefix, nextHop), getRdsBuilder(nextHop, rd).build());
1548         return java.util.Optional.ofNullable(rd);
1549     }
1550
1551     static String getVpnNamePrefixKey(String vpnName, String prefix) {
1552         return vpnName + VpnConstants.SEPARATOR + prefix;
1553     }
1554
1555     static InstanceIdentifier<Adjacency> getAdjacencyIdentifier(String vpnInterfaceName, String ipAddress) {
1556         return InstanceIdentifier.builder(VpnInterfaces.class)
1557                 .child(VpnInterface.class, new VpnInterfaceKey(vpnInterfaceName))
1558                 .augmentation(Adjacencies.class).child(Adjacency.class, new AdjacencyKey(ipAddress)).build();
1559     }
1560
1561     static InstanceIdentifier<Adjacency> getVpnInterfaceOpDataEntryAdjacencyIdentifier(String intfName, String vpnName,
1562                 String ipAddress) {
1563         return InstanceIdentifier.builder(VpnInterfaceOpData.class)
1564                 .child(VpnInterfaceOpDataEntry.class, new VpnInterfaceOpDataEntryKey(intfName, vpnName))
1565                 .augmentation(AdjacenciesOp.class).child(Adjacency.class, new AdjacencyKey(ipAddress)).build();
1566     }
1567
1568     public static List<String> getIpsListFromExternalIps(List<ExternalIps> externalIps) {
1569         if (externalIps == null) {
1570             return emptyList();
1571         }
1572
1573         return externalIps.stream().map(ExternalIps::getIpAddress).collect(Collectors.toList());
1574     }
1575
1576     void bindService(final String vpnInstanceName, final String interfaceName, boolean isTunnelInterface) {
1577         jobCoordinator.enqueueJob(interfaceName,
1578             () -> Collections.singletonList(txRunner.callWithNewReadWriteTransactionAndSubmit(
1579                                                                                 Datastore.CONFIGURATION, tx -> {
1580                     BoundServices serviceInfo = isTunnelInterface
1581                             ? VpnUtil.getBoundServicesForTunnelInterface(vpnInstanceName, interfaceName)
1582                             : getBoundServicesForVpnInterface(vpnInstanceName, interfaceName);
1583                     tx.put(InterfaceUtils.buildServiceId(interfaceName,
1584                             ServiceIndex.getIndex(NwConstants.L3VPN_SERVICE_NAME,
1585                                     NwConstants.L3VPN_SERVICE_INDEX)),
1586                             serviceInfo, WriteTransaction.CREATE_MISSING_PARENTS);
1587                 })), SystemPropertyReader.getDataStoreJobCoordinatorMaxRetries());
1588     }
1589
1590     BoundServices getBoundServicesForVpnInterface(String vpnName, String interfaceName) {
1591         List<Instruction> instructions = new ArrayList<>();
1592         int instructionKey = 0;
1593         final long vpnId = getVpnId(vpnName);
1594         List<Action> actions = Collections.singletonList(
1595                 new ActionRegLoad(0, VpnConstants.VPN_REG_ID, 0, VpnConstants.VPN_ID_LENGTH, vpnId).buildAction());
1596         instructions.add(MDSALUtil.buildApplyActionsInstruction(actions, ++instructionKey));
1597         instructions.add(
1598                 MDSALUtil.buildAndGetWriteMetadaInstruction(MetaDataUtil.getVpnIdMetadata(vpnId),
1599                         MetaDataUtil.METADATA_MASK_VRFID, ++instructionKey));
1600         instructions.add(MDSALUtil.buildAndGetGotoTableInstruction(NwConstants.L3_GW_MAC_TABLE,
1601                 ++instructionKey));
1602         BoundServices serviceInfo = InterfaceUtils.getBoundServices(
1603                 String.format("%s.%s.%s", "vpn", vpnName, interfaceName),
1604                 ServiceIndex.getIndex(NwConstants.L3VPN_SERVICE_NAME, NwConstants.L3VPN_SERVICE_INDEX),
1605                 VpnConstants.DEFAULT_FLOW_PRIORITY, NwConstants.COOKIE_VM_INGRESS_TABLE, instructions);
1606         return serviceInfo;
1607     }
1608
1609     static BoundServices getBoundServicesForTunnelInterface(String vpnName, String interfaceName) {
1610         int instructionKey = 0;
1611         List<Instruction> instructions = new ArrayList<>();
1612         instructions.add(MDSALUtil.buildAndGetGotoTableInstruction(
1613                 NwConstants.L3VNI_EXTERNAL_TUNNEL_DEMUX_TABLE, ++instructionKey));
1614         BoundServices serviceInfo = InterfaceUtils.getBoundServices(String.format("%s.%s.%s", "vpn",
1615                 vpnName, interfaceName),
1616                 ServiceIndex.getIndex(NwConstants.L3VPN_SERVICE_NAME,
1617                         NwConstants.L3VNI_EXTERNAL_TUNNEL_DEMUX_TABLE), VpnConstants.DEFAULT_FLOW_PRIORITY,
1618                 NwConstants.COOKIE_VM_INGRESS_TABLE, instructions);
1619         return serviceInfo;
1620     }
1621
1622     void unbindService(final String vpnInterfaceName, boolean isInterfaceStateDown) {
1623         if (!isInterfaceStateDown) {
1624             jobCoordinator.enqueueJob(vpnInterfaceName,
1625                 () -> Collections.singletonList(txRunner.callWithNewWriteOnlyTransactionAndSubmit(
1626                         Datastore.CONFIGURATION, tx ->
1627                         tx.delete(InterfaceUtils.buildServiceId(vpnInterfaceName,
1628                                         ServiceIndex.getIndex(NwConstants.L3VPN_SERVICE_NAME,
1629                                                 NwConstants.L3VPN_SERVICE_INDEX))))),
1630                 SystemPropertyReader.getDataStoreJobCoordinatorMaxRetries());
1631         }
1632     }
1633
1634     static FlowEntity buildFlowEntity(BigInteger dpnId, short tableId, String flowId) {
1635         return new FlowEntityBuilder().setDpnId(dpnId).setTableId(tableId).setFlowId(flowId).build();
1636     }
1637
1638     static VrfEntryBase.EncapType getEncapType(boolean isVxLan) {
1639         return isVxLan ? VrfEntryBase.EncapType.Vxlan : VrfEntryBase.EncapType.Mplsgre;
1640     }
1641
1642     org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.subnets.@Nullable Subnets
1643         getExternalSubnet(Uuid subnetId) {
1644         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.subnets
1645             .Subnets> subnetsIdentifier = InstanceIdentifier.builder(ExternalSubnets.class)
1646                 .child(org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.subnets
1647                         .Subnets.class, new SubnetsKey(subnetId)).build();
1648         Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.subnets.Subnets>
1649             optionalSubnets = read(LogicalDatastoreType.CONFIGURATION, subnetsIdentifier);
1650         return optionalSubnets.isPresent() ? optionalSubnets.get() : null;
1651     }
1652
1653     @Nullable
1654     public Uuid getSubnetFromExternalRouterByIp(Uuid routerId, String ip) {
1655         Routers externalRouter = getExternalRouter(routerId.getValue());
1656         if (externalRouter != null && externalRouter.getExternalIps() != null) {
1657             for (ExternalIps externalIp : externalRouter.getExternalIps()) {
1658                 if (Objects.equals(externalIp.getIpAddress(), ip)) {
1659                     return externalIp.getSubnetId();
1660                 }
1661             }
1662         }
1663         return null;
1664     }
1665
1666     static boolean isExternalSubnetVpn(String vpnName, String subnetId) {
1667         return vpnName.equals(subnetId);
1668     }
1669
1670     static Boolean getIsExternal(Network network) {
1671         return network.augmentation(NetworkL3Extension.class) != null
1672                 && network.augmentation(NetworkL3Extension.class).isExternal();
1673     }
1674
1675     @SuppressWarnings("checkstyle:linelength")
1676     @Nullable
1677     Network getNeutronNetwork(Uuid networkId) {
1678         LOG.debug("getNeutronNetwork for {}", networkId.getValue());
1679         InstanceIdentifier<Network> inst = InstanceIdentifier.create(Neutron.class).child(
1680                 org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.Networks.class).child(
1681                 Network.class, new NetworkKey(networkId));
1682         return read(LogicalDatastoreType.CONFIGURATION, inst).orNull();
1683     }
1684
1685     public static boolean isEligibleForBgp(@Nullable String rd, @Nullable String vpnName, @Nullable BigInteger dpnId,
1686             @Nullable String networkName) {
1687         if (rd != null) {
1688             if (rd.equals(vpnName)) {
1689                 return false;
1690             }
1691             if (dpnId != null && rd.equals(dpnId.toString())) {
1692                 return false;
1693             }
1694             if (rd.equals(networkName)) {
1695                 return false;
1696             }
1697             return true;
1698         }
1699         return false;
1700     }
1701
1702     static String getFibFlowRef(BigInteger dpnId, short tableId, String vpnName, int priority) {
1703         return VpnConstants.FLOWID_PREFIX + dpnId + NwConstants.FLOWID_SEPARATOR + tableId
1704                 + NwConstants.FLOWID_SEPARATOR + vpnName + NwConstants.FLOWID_SEPARATOR + priority;
1705     }
1706
1707     void removeExternalTunnelDemuxFlows(String vpnName) {
1708         LOG.info("Removing external tunnel flows for vpn {}", vpnName);
1709         for (BigInteger dpnId: NWUtil.getOperativeDPNs(dataBroker)) {
1710             LOG.debug("Removing external tunnel flows for vpn {} from dpn {}", vpnName, dpnId);
1711             String flowRef = getFibFlowRef(dpnId, NwConstants.L3VNI_EXTERNAL_TUNNEL_DEMUX_TABLE,
1712                     vpnName, VpnConstants.DEFAULT_FLOW_PRIORITY);
1713             FlowEntity flowEntity = VpnUtil.buildFlowEntity(dpnId,
1714                     NwConstants.L3VNI_EXTERNAL_TUNNEL_DEMUX_TABLE, flowRef);
1715             mdsalManager.removeFlow(flowEntity);
1716         }
1717     }
1718
1719     public boolean isVpnPendingDelete(String rd) {
1720         VpnInstanceOpDataEntry vpnInstanceOpData = getVpnInstanceOpData(rd);
1721         boolean isVpnPendingDelete = false;
1722         if (vpnInstanceOpData == null
1723                 || vpnInstanceOpData.getVpnState() == VpnInstanceOpDataEntry.VpnState.PendingDelete) {
1724             isVpnPendingDelete = true;
1725         }
1726         return isVpnPendingDelete;
1727     }
1728
1729     public List<VpnInstanceOpDataEntry> getVpnsImportingMyRoute(final String vpnName) {
1730         List<VpnInstanceOpDataEntry> vpnsToImportRoute = new ArrayList<>();
1731         final String vpnRd = getVpnRd(vpnName);
1732         if (vpnRd == null) {
1733             LOG.error("getVpnsImportingMyRoute: vpn {} not present in config DS.", vpnName);
1734             return vpnsToImportRoute;
1735         }
1736         final VpnInstanceOpDataEntry vpnInstanceOpDataEntry = getVpnInstanceOpData(vpnRd);
1737         if (vpnInstanceOpDataEntry == null) {
1738             LOG.error("getVpnsImportingMyRoute: Could not retrieve vpn instance op data for {}"
1739                     + " to check for vpns importing the routes", vpnName);
1740             return vpnsToImportRoute;
1741         }
1742         Predicate<VpnInstanceOpDataEntry> excludeVpn = input -> {
1743             if (input.getVpnInstanceName() == null) {
1744                 LOG.error("getVpnsImportingMyRoute.excludeVpn: Received vpn instance with rd {} without a name.",
1745                         input.getVrfId());
1746                 return false;
1747             }
1748             return !input.getVpnInstanceName().equals(vpnName);
1749         };
1750         Predicate<VpnInstanceOpDataEntry> matchRTs = input -> {
1751             Iterable<String> commonRTs =
1752                 intersection(getRts(vpnInstanceOpDataEntry, VpnTarget.VrfRTType.ExportExtcommunity),
1753                     getRts(input, VpnTarget.VrfRTType.ImportExtcommunity));
1754             return Iterators.size(commonRTs.iterator()) > 0;
1755         };
1756         vpnsToImportRoute = getAllVpnInstanceOpData().stream().filter(excludeVpn).filter(matchRTs)
1757                 .collect(Collectors.toList());
1758         return vpnsToImportRoute;
1759     }
1760
1761     static List<String> getRts(VpnInstanceOpDataEntry vpnInstance, VpnTarget.VrfRTType rtType) {
1762         String name = vpnInstance.getVpnInstanceName();
1763         List<String> rts = new ArrayList<>();
1764         VpnTargets targets = vpnInstance.getVpnTargets();
1765         if (targets == null) {
1766             LOG.debug("getRts: vpn targets not available for {}", name);
1767             return rts;
1768         }
1769         List<VpnTarget> vpnTargets = targets.getVpnTarget();
1770         if (vpnTargets == null) {
1771             LOG.debug("getRts: vpnTarget values not available for {}", name);
1772             return rts;
1773         }
1774         for (VpnTarget target : vpnTargets) {
1775             //TODO: Check for RT type is Both
1776             if (target.getVrfRTType().equals(rtType) || target.getVrfRTType().equals(VpnTarget.VrfRTType.Both)) {
1777                 String rtValue = target.getVrfRTValue();
1778                 rts.add(rtValue);
1779             }
1780         }
1781         return rts;
1782     }
1783
1784     static <T> Iterable<T> intersection(final Collection<T> collection1, final Collection<T> collection2) {
1785         Set<T> intersection = new HashSet<>(collection1);
1786         intersection.retainAll(collection2);
1787         return intersection;
1788     }
1789
1790     /** Get Subnetmap from its Uuid.
1791      * @param subnetUuid the subnet's Uuid
1792      * @return the Subnetmap of Uuid or null if it is not found
1793      */
1794     @Nullable
1795     public Subnetmap getSubnetmapFromItsUuid(Uuid subnetUuid) {
1796         InstanceIdentifier<Subnetmap> id = buildSubnetmapIdentifier(subnetUuid);
1797         return read(LogicalDatastoreType.CONFIGURATION, id).orNull();
1798     }
1799
1800     boolean isAdjacencyEligibleToVpnInternet(Adjacency adjacency) {
1801         // returns true if BGPVPN Internet and adjacency is IPv6, false otherwise
1802         boolean adjacencyEligible = false;
1803         IpVersionChoice ipVerChoice = getIpVersionFromString(adjacency.getIpAddress());
1804         if (ipVerChoice.isIpVersionChosen(IpVersionChoice.IPV6)) {
1805             Subnetmap sn = getSubnetmapFromItsUuid(adjacency.getSubnetId());
1806             if (sn != null && sn.getInternetVpnId() != null) {
1807                 adjacencyEligible = true;
1808             }
1809         }
1810         return adjacencyEligible;
1811     }
1812
1813     boolean isAdjacencyEligibleToVpn(Adjacency adjacency, String vpnName) {
1814         // returns true if BGPVPN Internet and adjacency is IPv6, false otherwise
1815         boolean adjacencyEligible = true;
1816         // if BGPVPN internet, return false if subnetmap has not internetVpnId() filled in
1817         if (isBgpVpnInternet(vpnName)) {
1818             return isAdjacencyEligibleToVpnInternet(adjacency);
1819         }
1820         return adjacencyEligible;
1821     }
1822
1823     @Nullable
1824     String getInternetVpnFromVpnInstanceList(List<VpnInstanceNames> vpnInstanceList) {
1825         for (VpnInstanceNames vpnInstance : vpnInstanceList) {
1826             String vpnName = vpnInstance.getVpnName();
1827             if (isBgpVpnInternet(vpnName)) {
1828                 return vpnName;
1829             }
1830         }
1831         return null;
1832     }
1833
1834     /** Get boolean true if vpn is bgpvpn internet, false otherwise.
1835      * @param vpnName name of the input VPN
1836      * @return true or false
1837      */
1838     boolean isBgpVpnInternet(String vpnName) {
1839         String primaryRd = getVpnRd(vpnName);
1840         if (primaryRd == null) {
1841             LOG.error("isBgpVpnInternet VPN {}."
1842                       + "Primary RD not found", vpnName);
1843             return false;
1844         }
1845         InstanceIdentifier<VpnInstanceOpDataEntry> id = InstanceIdentifier.builder(VpnInstanceOpData.class)
1846               .child(VpnInstanceOpDataEntry.class, new VpnInstanceOpDataEntryKey(primaryRd)).build();
1847
1848         Optional<VpnInstanceOpDataEntry> vpnInstanceOpDataEntryOptional = read(LogicalDatastoreType.OPERATIONAL, id);
1849         if (!vpnInstanceOpDataEntryOptional.isPresent()) {
1850             LOG.error("isBgpVpnInternet VPN {}."
1851                      + "VpnInstanceOpDataEntry not found", vpnName);
1852             return false;
1853         }
1854         LOG.debug("isBgpVpnInternet VPN {}."
1855              + "Successfully VpnInstanceOpDataEntry.getBgpvpnType {}",
1856              vpnName, vpnInstanceOpDataEntryOptional.get().getBgpvpnType());
1857         if (vpnInstanceOpDataEntryOptional.get().getBgpvpnType() == VpnInstanceOpDataEntry
1858                .BgpvpnType.BGPVPNInternet) {
1859             return true;
1860         }
1861         return false;
1862     }
1863
1864     /**Get IpVersionChoice from String IP like x.x.x.x or an representation IPv6.
1865      * @param ipAddress String of an representation IP address V4 or V6
1866      * @return the IpVersionChoice of the version or IpVersionChoice.UNDEFINED otherwise
1867      */
1868     public static IpVersionChoice getIpVersionFromString(String ipAddress) {
1869         int indexIpAddress = ipAddress.indexOf('/');
1870         if (indexIpAddress >= 0) {
1871             ipAddress = ipAddress.substring(0, indexIpAddress);
1872         }
1873         try {
1874             InetAddress address = InetAddress.getByName(ipAddress);
1875             if (address instanceof Inet4Address) {
1876                 return IpVersionChoice.IPV4;
1877             } else if (address instanceof Inet6Address) {
1878                 return IpVersionChoice.IPV6;
1879             }
1880         } catch (UnknownHostException | SecurityException e) {
1881             return IpVersionChoice.UNDEFINED;
1882         }
1883         return IpVersionChoice.UNDEFINED;
1884     }
1885
1886     ListenableFuture<Void> unsetScheduledToRemoveForVpnInterface(String interfaceName) {
1887         VpnInterfaceBuilder builder = new VpnInterfaceBuilder().withKey(new VpnInterfaceKey(interfaceName));
1888         return txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx -> tx.merge(
1889                 VpnUtil.getVpnInterfaceIdentifier(interfaceName), builder.build(),
1890                 WriteTransaction.CREATE_MISSING_PARENTS));
1891     }
1892
1893     /**
1894      * Adds router port for all elan network of type VLAN which is a part of vpnName in the DPN with dpnId.
1895      * This will create the vlan footprint in the DPN's which are member of the VPN.
1896      *
1897      * @param vpnName the vpnName
1898      * @param dpnId  the DPN id
1899      */
1900     void addRouterPortToElanForVlanInDpn(String vpnName, BigInteger dpnId) {
1901         Map<String,String> elanInstanceRouterPortMap = getElanInstanceRouterPortMap(vpnName);
1902         for (Entry<String, String> elanInstanceRouterEntry : elanInstanceRouterPortMap.entrySet()) {
1903             addRouterPortToElanDpn(elanInstanceRouterEntry.getKey(), elanInstanceRouterEntry.getValue(), dpnId);
1904         }
1905     }
1906
1907     /**
1908      * Removes router port for all elan network of type VLAN which is a part of vpnName in the DPN with dpnId.
1909      * This will remove the  vlan footprint in all the DPN's which are member of the VPN.
1910      *
1911      * @param vpnName the vpn name
1912      * @param dpnId  the DPN id
1913      */
1914     void removeRouterPortFromElanForVlanInDpn(String vpnName, BigInteger dpnId) {
1915         Map<String,String> elanInstanceRouterPortMap = getElanInstanceRouterPortMap(vpnName);
1916         for (Entry<String, String> elanInstanceRouterEntry : elanInstanceRouterPortMap.entrySet()) {
1917             removeRouterPortFromElanDpn(elanInstanceRouterEntry.getKey(), elanInstanceRouterEntry.getValue(),
1918                     vpnName, dpnId);
1919         }
1920     }
1921
1922     /**
1923      * Adds router port for all elan network of type VLAN which is a part of vpnName in all the DPN which has a port
1924      * This will create the vlan footprint in all the DPN's which are member of the VPN.
1925      *
1926      * @param vpnName the vpn name
1927      */
1928     void addRouterPortToElanDpnListForVlaninAllDpn(String vpnName) {
1929         Map<String,String> elanInstanceRouterPortMap = getElanInstanceRouterPortMap(vpnName);
1930         Set<BigInteger> dpnList = getDpnInElan(elanInstanceRouterPortMap);
1931         for (BigInteger dpnId : dpnList) {
1932             for (Entry<String, String> elanInstanceRouterEntry : elanInstanceRouterPortMap.entrySet()) {
1933                 addRouterPortToElanDpn(elanInstanceRouterEntry.getKey(), elanInstanceRouterEntry.getValue(), dpnId);
1934             }
1935         }
1936     }
1937
1938     /**Removes router port for all elan network of type VLAN which is a part of vpnName in all the DPN which has a port
1939      * This will remove the vlan footprint in all the DPN's which are member of the VPN.
1940      *
1941      * @param routerInterfacePortId this will add the current subnet router port id to the map for removal
1942      * @param elanInstanceName the current elanstance being removed this will be added to map for removal
1943      * @param vpnName the vpn name
1944      */
1945     void removeRouterPortFromElanDpnListForVlanInAllDpn(String elanInstanceName,
1946             String routerInterfacePortId, String vpnName) {
1947         Map<String,String> elanInstanceRouterPortMap = getElanInstanceRouterPortMap(vpnName);
1948         elanInstanceRouterPortMap.put(elanInstanceName, routerInterfacePortId);
1949         Set<BigInteger> dpnList = getDpnInElan(elanInstanceRouterPortMap);
1950         for (BigInteger dpnId : dpnList) {
1951             for (Entry<String, String> elanInstanceRouterEntry : elanInstanceRouterPortMap.entrySet()) {
1952                 removeRouterPortFromElanDpn(elanInstanceRouterEntry.getKey(), elanInstanceRouterEntry.getValue(),
1953                         vpnName, dpnId);
1954             }
1955         }
1956
1957     }
1958
1959     Set<BigInteger> getDpnInElan(Map<String,String> elanInstanceRouterPortMap) {
1960         Set<BigInteger> dpnIdSet = new HashSet<>();
1961         for (String elanInstanceName : elanInstanceRouterPortMap.keySet()) {
1962             InstanceIdentifier<ElanDpnInterfacesList> elanDpnInterfaceId = getElanDpnOperationalDataPath(
1963                     elanInstanceName);
1964             Optional<ElanDpnInterfacesList> dpnInElanInterfaces = read(LogicalDatastoreType.OPERATIONAL,
1965                     elanDpnInterfaceId);
1966             if (dpnInElanInterfaces.isPresent()) {
1967                 List<DpnInterfaces> dpnInterfaces = dpnInElanInterfaces.get().nonnullDpnInterfaces();
1968                 for (DpnInterfaces dpnInterface : dpnInterfaces) {
1969                     dpnIdSet.add(dpnInterface.getDpId());
1970                 }
1971             }
1972         }
1973         return dpnIdSet;
1974     }
1975
1976     void addRouterPortToElanDpn(String elanInstanceName, String routerInterfacePortId, BigInteger dpnId) {
1977         InstanceIdentifier<DpnInterfaces> elanDpnInterfaceId = getElanDpnInterfaceOperationalDataPath(
1978                 elanInstanceName,dpnId);
1979         synchronized (elanInstanceName.intern()) {
1980             Optional<DpnInterfaces> dpnInElanInterfaces = read(LogicalDatastoreType.OPERATIONAL, elanDpnInterfaceId);
1981             List<String> elanInterfaceList;
1982             DpnInterfaces dpnInterface;
1983             if (!dpnInElanInterfaces.isPresent()) {
1984                 elanInterfaceList = new ArrayList<>();
1985             } else {
1986                 dpnInterface = dpnInElanInterfaces.get();
1987                 elanInterfaceList = dpnInterface.getInterfaces();
1988             }
1989             if (!elanInterfaceList.contains(routerInterfacePortId)) {
1990                 elanInterfaceList.add(routerInterfacePortId);
1991                 dpnInterface = new DpnInterfacesBuilder().setDpId(dpnId).setInterfaces(elanInterfaceList)
1992                         .withKey(new DpnInterfacesKey(dpnId)).build();
1993                 syncWrite(LogicalDatastoreType.OPERATIONAL, elanDpnInterfaceId, dpnInterface);
1994             }
1995         }
1996
1997     }
1998
1999     void removeRouterPortFromElanDpn(String elanInstanceName, String routerInterfacePortId,
2000             String vpnName, BigInteger dpnId) {
2001         InstanceIdentifier<DpnInterfaces> elanDpnInterfaceId = getElanDpnInterfaceOperationalDataPath(
2002                 elanInstanceName,dpnId);
2003         synchronized (elanInstanceName.intern()) {
2004             Optional<DpnInterfaces> dpnInElanInterfaces = read(LogicalDatastoreType.OPERATIONAL, elanDpnInterfaceId);
2005             List<String> elanInterfaceList;
2006             DpnInterfaces dpnInterface;
2007             if (!dpnInElanInterfaces.isPresent()) {
2008                 LOG.info("No interface in any dpn for {}", vpnName);
2009                 return;
2010             } else {
2011                 dpnInterface = dpnInElanInterfaces.get();
2012                 elanInterfaceList = dpnInterface.getInterfaces();
2013             }
2014             if (!elanInterfaceList.contains(routerInterfacePortId)) {
2015                 LOG.info("Router port not present in DPN {} for VPN {}", dpnId, vpnName);
2016                 return;
2017             }
2018             elanInterfaceList.remove(routerInterfacePortId);
2019             dpnInterface = new DpnInterfacesBuilder().setDpId(dpnId).setInterfaces(elanInterfaceList)
2020                     .withKey(new DpnInterfacesKey(dpnId)).build();
2021             syncWrite(LogicalDatastoreType.OPERATIONAL, elanDpnInterfaceId, dpnInterface);
2022         }
2023
2024     }
2025
2026     @Nullable
2027     ElanInterface getElanInterfaceByElanInterfaceName(String elanInterfaceName) {
2028         InstanceIdentifier<ElanInterface> elanInterfaceId = getElanInterfaceConfigurationDataPathId(elanInterfaceName);
2029         return read(LogicalDatastoreType.CONFIGURATION, elanInterfaceId).orNull();
2030     }
2031
2032     static InstanceIdentifier<ElanInterface> getElanInterfaceConfigurationDataPathId(String interfaceName) {
2033         return InstanceIdentifier.builder(ElanInterfaces.class)
2034                 .child(ElanInterface.class, new ElanInterfaceKey(interfaceName)).build();
2035     }
2036
2037     @Nullable
2038     DpnInterfaces getElanInterfaceInfoByElanDpn(String elanInstanceName, BigInteger dpId) {
2039         InstanceIdentifier<DpnInterfaces> elanDpnInterfacesId = getElanDpnInterfaceOperationalDataPath(elanInstanceName,
2040                 dpId);
2041         return read(LogicalDatastoreType.OPERATIONAL, elanDpnInterfacesId).orNull();
2042     }
2043
2044     @Nullable
2045     String getExternalElanInterface(String elanInstanceName, BigInteger dpnId) {
2046         DpnInterfaces dpnInterfaces = getElanInterfaceInfoByElanDpn(elanInstanceName, dpnId);
2047         if (dpnInterfaces == null || dpnInterfaces.getInterfaces() == null) {
2048             LOG.info("Elan {} does not have interfaces in DPN {}", elanInstanceName, dpnId);
2049             return null;
2050         }
2051
2052         for (String dpnInterface : dpnInterfaces.getInterfaces()) {
2053             if (interfaceManager.isExternalInterface(dpnInterface)) {
2054                 return dpnInterface;
2055             }
2056         }
2057         return null;
2058     }
2059
2060     static boolean isVlan(ElanInstance elanInstance) {
2061         return elanInstance != null && elanInstance.getSegmentType() != null
2062                 && elanInstance.getSegmentType().isAssignableFrom(SegmentTypeVlan.class)
2063                 && elanInstance.getSegmentationId() != null && elanInstance.getSegmentationId() != 0;
2064     }
2065
2066     boolean isVlan(String interfaceName) {
2067         ElanInterface elanInterface = getElanInterfaceByElanInterfaceName(interfaceName);
2068         if (elanInterface == null) {
2069             return false;
2070         }
2071         ElanInstance  elanInstance = getElanInstanceByName(elanInterface.getElanInstanceName());
2072         return isVlan(elanInstance);
2073     }
2074
2075     @Nullable
2076     ElanInstance getElanInstanceByName(String elanInstanceName) {
2077         InstanceIdentifier<ElanInstance> elanIdentifierId =
2078                 ElanHelper.getElanInstanceConfigurationDataPath(elanInstanceName);
2079         return read(LogicalDatastoreType.CONFIGURATION, elanIdentifierId).orNull();
2080     }
2081
2082     @Nullable
2083     String getVpnNameFromElanIntanceName(String elanInstanceName) {
2084         Optional<Subnetmaps> subnetMapsData = read(LogicalDatastoreType.CONFIGURATION, buildSubnetMapsWildCardPath());
2085         if (subnetMapsData.isPresent()) {
2086             List<Subnetmap> subnetMapList = subnetMapsData.get().getSubnetmap();
2087             if (subnetMapList != null && !subnetMapList.isEmpty()) {
2088                 for (Subnetmap subnet : subnetMapList) {
2089                     if (subnet.getNetworkId().getValue().equals(elanInstanceName)) {
2090                         if (subnet.getVpnId() != null) {
2091                             return subnet.getVpnId().getValue();
2092                         }
2093                     }
2094                 }
2095             }
2096         }
2097         return null;
2098     }
2099
2100     Map<String, String> getElanInstanceRouterPortMap(String vpnName) {
2101         Map<String, String> elanInstanceRouterPortMap = new HashMap<>();
2102         Optional<Subnetmaps> subnetMapsData = read(LogicalDatastoreType.CONFIGURATION, buildSubnetMapsWildCardPath());
2103         if (subnetMapsData.isPresent()) {
2104             List<Subnetmap> subnetMapList = subnetMapsData.get().getSubnetmap();
2105             if (subnetMapList != null && !subnetMapList.isEmpty()) {
2106                 for (Subnetmap subnet : subnetMapList) {
2107                     if (subnet.getVpnId() != null && subnet.getVpnId().getValue().equals(vpnName)
2108                             && NetworkType.VLAN.equals(subnet.getNetworkType())) {
2109                         if (subnet.getRouterInterfacePortId() == null || subnet.getNetworkId() == null) {
2110                             LOG.warn("The RouterInterfacePortId or NetworkId is null");
2111                             continue;
2112                         }
2113                         String routerInterfacePortUuid = subnet.getRouterInterfacePortId().getValue();
2114                         if (routerInterfacePortUuid != null && !routerInterfacePortUuid.isEmpty()) {
2115                             elanInstanceRouterPortMap.put(subnet.getNetworkId().getValue(),routerInterfacePortUuid);
2116                         }
2117                     }
2118                 }
2119             }
2120         }
2121         return elanInstanceRouterPortMap;
2122     }
2123
2124     @Nullable
2125     String getRouterPordIdFromElanInstance(String elanInstanceName) {
2126         Optional<Subnetmaps> subnetMapsData = read(LogicalDatastoreType.CONFIGURATION, buildSubnetMapsWildCardPath());
2127         if (subnetMapsData.isPresent()) {
2128             List<Subnetmap> subnetMapList = subnetMapsData.get().getSubnetmap();
2129             if (subnetMapList != null && !subnetMapList.isEmpty()) {
2130                 for (Subnetmap subnet : subnetMapList) {
2131                     if (subnet.getNetworkId().getValue().equals(elanInstanceName)) {
2132                         if (subnet.getRouterInterfacePortId() != null) {
2133                             return subnet.getRouterInterfacePortId().getValue();
2134                         }
2135                     }
2136                 }
2137             }
2138         }
2139         return null;
2140     }
2141
2142     boolean shouldPopulateFibForVlan(String vpnName, @Nullable String elanInstanceName, BigInteger dpnId) {
2143         Map<String,String> elanInstanceRouterPortMap = getElanInstanceRouterPortMap(vpnName);
2144         boolean shouldPopulateFibForVlan = false;
2145         if (!elanInstanceRouterPortMap.isEmpty()) {
2146             shouldPopulateFibForVlan = true;
2147         }
2148         for (Entry<String, String> elanInstanceRouterEntry : elanInstanceRouterPortMap
2149                 .entrySet()) {
2150             String currentElanInstance = elanInstanceRouterEntry.getKey();
2151             if (elanInstanceName != null && elanInstanceName.equals(currentElanInstance)) {
2152                 continue;
2153             }
2154             String externalinterface = getExternalElanInterface(currentElanInstance ,dpnId);
2155             if (externalinterface == null) {
2156                 shouldPopulateFibForVlan = false;
2157                 break;
2158             }
2159         }
2160         return shouldPopulateFibForVlan;
2161     }
2162
2163     public static InstanceIdentifier<DpnInterfaces> getElanDpnInterfaceOperationalDataPath(String elanInstanceName,
2164             BigInteger dpId) {
2165         return InstanceIdentifier.builder(ElanDpnInterfaces.class)
2166                 .child(ElanDpnInterfacesList.class, new ElanDpnInterfacesListKey(elanInstanceName))
2167                 .child(DpnInterfaces.class, new DpnInterfacesKey(dpId)).build();
2168     }
2169
2170     public static InstanceIdentifier<ElanDpnInterfacesList> getElanDpnOperationalDataPath(String elanInstanceName) {
2171         return InstanceIdentifier.builder(ElanDpnInterfaces.class)
2172                 .child(ElanDpnInterfacesList.class, new ElanDpnInterfacesListKey(elanInstanceName))
2173                 .build();
2174     }
2175
2176     public static boolean isMatchedPrefixToInterface(Prefixes prefix, VpnInterfaceOpDataEntry vpnInterface) {
2177         if (prefix != null && vpnInterface != null) {
2178             if (prefix.getDpnId() != null && vpnInterface.getDpnId() != null) {
2179                 if (prefix.getVpnInterfaceName() != null && vpnInterface.getName() != null) {
2180                     return prefix.getDpnId().equals(vpnInterface.getDpnId())
2181                             && prefix.getVpnInterfaceName().equalsIgnoreCase(vpnInterface.getName());
2182                 }
2183             }
2184         }
2185         return false;
2186     }
2187
2188     public static void sendNeighborSolicationToOfGroup(Ipv6NdUtilService ipv6NdUtilService, Ipv6Address srcIpv6Address,
2189             MacAddress srcMac, Ipv6Address dstIpv6Address, Long ofGroupId, BigInteger dpId) {
2190         SendNeighborSolicitationToOfGroupInput input = new SendNeighborSolicitationToOfGroupInputBuilder()
2191                 .setSourceIpv6(srcIpv6Address).setSourceLlAddress(srcMac).setTargetIpAddress(dstIpv6Address)
2192                 .setOfGroupId(ofGroupId).setDpId(dpId).build();
2193         try {
2194             Future<RpcResult<SendNeighborSolicitationToOfGroupOutput>> result = ipv6NdUtilService
2195                     .sendNeighborSolicitationToOfGroup(input);
2196             RpcResult<SendNeighborSolicitationToOfGroupOutput> rpcResult = result.get();
2197             if (!rpcResult.isSuccessful()) {
2198                 LOG.error("sendNeighborSolicitationToOfGroup: RPC Call failed for input={} and Errors={}", input,
2199                         rpcResult.getErrors());
2200             }
2201         } catch (InterruptedException | ExecutionException e) {
2202             LOG.error("Failed to send NS packet to ELAN group, input={}", input, e);
2203         }
2204     }
2205
2206     Set<org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.af.config.vpntargets.VpnTarget>
2207         getRtListForVpn(String vpnName) {
2208         Set<org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.af.config.vpntargets
2209                 .VpnTarget> rtList = new HashSet<>();
2210         InstanceIdentifier<VpnInstance> vpnInstanceId = InstanceIdentifier.builder(VpnInstances.class)
2211                 .child(VpnInstance.class, new VpnInstanceKey(vpnName)).build();
2212         Optional<VpnInstance> vpnInstanceOptional = read(LogicalDatastoreType.CONFIGURATION, vpnInstanceId);
2213         if (vpnInstanceOptional.isPresent()) {
2214             org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.af.config.VpnTargets
2215                     vpnTargets = vpnInstanceOptional.get().getIpv4Family().getVpnTargets();
2216             if (vpnTargets != null && vpnTargets.getVpnTarget() != null) {
2217                 rtList.addAll(vpnTargets.getVpnTarget());
2218             }
2219         }
2220         else {
2221             LOG.error("getRtListForVpn: Vpn Instance {} not present in config DS", vpnName);
2222         }
2223         return rtList;
2224     }
2225
2226     static InstanceIdentifier<AssociatedVpn> getAssociatedSubnetAndVpnIdentifier(String rt, RouteTarget.RtType rtType,
2227                                                                                  String cidr, String vpnName) {
2228         return InstanceIdentifier.builder(SubnetsAssociatedToRouteTargets.class).child(RouteTarget.class,
2229                 new RouteTargetKey(rt, rtType)).child(AssociatedSubnet.class, new AssociatedSubnetKey(cidr))
2230                 .child(AssociatedVpn.class, new AssociatedVpnKey(vpnName)).build();
2231     }
2232
2233     static InstanceIdentifier<AssociatedSubnet> getAssociatedSubnetIdentifier(String rt, RouteTarget.RtType rtType,
2234                                                                        String cidr) {
2235         return InstanceIdentifier.builder(SubnetsAssociatedToRouteTargets.class).child(RouteTarget.class,
2236                 new RouteTargetKey(rt, rtType)).child(AssociatedSubnet.class, new AssociatedSubnetKey(cidr)).build();
2237     }
2238
2239     static AssociatedVpn buildAssociatedSubnetAndVpn(String vpnName) {
2240         return new AssociatedVpnBuilder().setName(vpnName).build();
2241     }
2242
2243     static InstanceIdentifier<RouteTarget> getRouteTargetsIdentifier(String rt, RouteTarget.RtType rtType) {
2244         return InstanceIdentifier.builder(SubnetsAssociatedToRouteTargets.class)
2245                 .child(RouteTarget.class, new RouteTargetKey(rt, rtType)).build();
2246     }
2247
2248     Set<RouteTarget> getRouteTargetSet(Set<org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815
2249             .vpn.af.config.vpntargets.VpnTarget> vpnTargets) {
2250         Set<RouteTarget> routeTargetSet = new HashSet<>();
2251         for (org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.af.config.vpntargets
2252                 .VpnTarget rt : vpnTargets) {
2253             String rtValue = rt.getVrfRTValue();
2254             switch (rt.getVrfRTType()) {
2255                 case ImportExtcommunity: {
2256                     Optional<RouteTarget> exportRouteTargetOptional = read(LogicalDatastoreType.OPERATIONAL,
2257                             getRouteTargetsIdentifier(rtValue, RouteTarget.RtType.ERT));
2258                     if (exportRouteTargetOptional.isPresent()) {
2259                         routeTargetSet.add(exportRouteTargetOptional.get());
2260                     }
2261                     break;
2262                 }
2263                 case ExportExtcommunity: {
2264                     Optional<RouteTarget> importRouteTargetOptional = read(LogicalDatastoreType.OPERATIONAL,
2265                             getRouteTargetsIdentifier(rtValue, RouteTarget.RtType.IRT));
2266                     if (importRouteTargetOptional.isPresent()) {
2267                         routeTargetSet.add(importRouteTargetOptional.get());
2268                     }
2269                     break;
2270                 }
2271                 case Both: {
2272                     Optional<RouteTarget> exportRouteTargetOptional = read(LogicalDatastoreType.OPERATIONAL,
2273                             getRouteTargetsIdentifier(rtValue, RouteTarget.RtType.ERT));
2274                     if (exportRouteTargetOptional.isPresent()) {
2275                         routeTargetSet.add(exportRouteTargetOptional.get());
2276                     }
2277                     Optional<RouteTarget> importRouteTargetOptional = read(LogicalDatastoreType.OPERATIONAL,
2278                             getRouteTargetsIdentifier(rtValue, RouteTarget.RtType.IRT));
2279                     if (importRouteTargetOptional.isPresent()) {
2280                         routeTargetSet.add(importRouteTargetOptional.get());
2281                     }
2282                     break;
2283                 }
2284                 default:
2285                     LOG.error("getRouteTargetSet: Invalid rt-type {}", rt.getVrfRTType());
2286             }
2287         }
2288         return routeTargetSet;
2289     }
2290
2291     /*
2292     TODO: (vivek/kiran): Subnet overlap in a VPN detection logic should use subnet allocation pools if available
2293            rather than only CIDR.
2294            Also the Subnet overlap in a VPN detection logic to be addressed for router-based-l3vpns.
2295     */
2296     static boolean areSubnetsOverlapping(String cidr1, String cidr2) {
2297         final int slash1 = cidr1.indexOf('/');
2298         final int address1 = addressForCidr(cidr1, slash1);
2299         final int cidrPart1 = maskForCidr(cidr1, slash1);
2300
2301         final int slash2 = cidr2.indexOf('/');
2302         final int address2 = addressForCidr(cidr2, slash2);
2303         final int cidrPart2 = maskForCidr(cidr2, slash2);
2304
2305         final int comparedValue = cidrPart1 <= cidrPart2 ? compare(address1, cidrPart1, address2)
2306                 : compare(address2, cidrPart2, address1);
2307         return comparedValue == 0;
2308     }
2309
2310     private static int addressForCidr(String cidr, int slash) {
2311         return InetAddresses.coerceToInteger(InetAddresses.forString(cidr.substring(0, slash)));
2312     }
2313
2314     private static int maskForCidr(String cidr, int slash) {
2315         return Integer.parseInt(cidr.substring(slash + 1));
2316     }
2317
2318     private static int compare(int address, int cidrPart, int address2) {
2319         int prefix = address2 & computeNetmask(cidrPart);
2320         return address ^ prefix;
2321     }
2322
2323     private static int computeNetmask(int cidrPart) {
2324         int netmask = 0;
2325         for (int j = 0; j < cidrPart; ++j) {
2326             netmask |= 1 << 31 - j;
2327         }
2328         return netmask;
2329     }
2330
2331     public static String buildIpMonitorJobKey(String ip, String vpnName) {
2332         return VpnConstants.IP_MONITOR_JOB_PREFIX_KEY + "-" + vpnName + "-" + ip;
2333     }
2334
2335     public static List<String> getVpnListForVpnInterface(VpnInterface vpnInter) {
2336         return vpnInter.nonnullVpnInstanceNames().stream()
2337                 .map(VpnInstanceNames::getVpnName).collect(Collectors.toList());
2338     }
2339
2340     public void updateVpnInstanceWithRdList(String vpnName, List<String> updatedRdList) {
2341         String primaryRd = getVpnRd(vpnName);
2342         if (primaryRd == null) {
2343             LOG.warn("updateVpnInstanceWithRdList: Unable to retrieve primary RD for the VPN {}. Skip to process "
2344                     + "the updated RD list {} ", vpnName, updatedRdList);
2345             return;
2346         }
2347         jobCoordinator.enqueueJob("VPN-" + vpnName, () -> {
2348             VpnInstanceOpDataEntryBuilder builder = new VpnInstanceOpDataEntryBuilder().setVrfId(primaryRd);
2349             builder.setRd(updatedRdList);
2350             return Collections.singletonList(txRunner.callWithNewWriteOnlyTransactionAndSubmit(
2351                     OPERATIONAL, tx -> {
2352                     InstanceIdentifier<VpnInstanceOpDataEntry> id = InstanceIdentifier
2353                             .builder(VpnInstanceOpData.class).child(VpnInstanceOpDataEntry.class,
2354                                     new VpnInstanceOpDataEntryKey(primaryRd)).build();
2355                     tx.merge(id, builder.build(), false);
2356                     LOG.debug("updateVpnInstanceWithRdList: Successfully updated the VPN {} with list of RDs {}",
2357                             vpnName, updatedRdList);
2358                 }));
2359         });
2360     }
2361
2362     public static RouteOrigin getRouteOrigin(AdjacencyType adjacencyType) {
2363         RouteOrigin origin = RouteOrigin.LOCAL;
2364         switch (adjacencyType) {
2365             case PrimaryAdjacency:
2366                 origin = RouteOrigin.LOCAL;
2367                 break;
2368             case ExtraRoute:
2369                 origin = RouteOrigin.STATIC;
2370                 break;
2371             case LearntIp:
2372                 origin = RouteOrigin.DYNAMIC;
2373                 break;
2374             default:
2375                 LOG.warn("Unknown adjacencyType={}", adjacencyType);
2376         }
2377         return origin;
2378     }
2379
2380     public static boolean isDualRouterVpnUpdate(List<String> oldVpnListCopy, List<String> newVpnListCopy) {
2381         return oldVpnListCopy.size() == 2 && newVpnListCopy.size() == 3
2382                 || oldVpnListCopy.size() == 3 && newVpnListCopy.size() == 2;
2383     }
2384
2385     // TODO Clean up the exception handling
2386     @SuppressWarnings("checkstyle:IllegalCatch")
2387     public void createVpnPortFixedIpToPort(String vpnName, String fixedIp,
2388                                                      String portName, boolean isLearntIp, String macAddress,
2389                                                      WriteTransaction writeConfigTxn) {
2390         InstanceIdentifier<VpnPortipToPort> id = buildVpnPortipToPortIdentifier(vpnName, fixedIp);
2391         VpnPortipToPortBuilder builder = new VpnPortipToPortBuilder().withKey(new VpnPortipToPortKey(fixedIp, vpnName))
2392                 .setVpnName(vpnName).setPortFixedip(fixedIp).setPortName(portName)
2393                 .setLearntIp(isLearntIp).setSubnetIp(false).setMacAddress(macAddress.toLowerCase(Locale.getDefault()));
2394         try {
2395             if (writeConfigTxn != null) {
2396                 writeConfigTxn.put(LogicalDatastoreType.CONFIGURATION, id, builder.build());
2397             } else {
2398                 syncWrite(LogicalDatastoreType.CONFIGURATION, id, builder.build());
2399             }
2400             LOG.trace("Port with Ip: {}, vpn {}, interface {}, learntIp {} added to VpnPortipToPort DS",
2401                     fixedIp, vpnName, portName, isLearntIp);
2402         } catch (Exception e) {
2403             LOG.error("Failure while creating VpnPortIpToPort map for vpn {} learnIp{}", vpnName, fixedIp, e);
2404         }
2405     }
2406
2407     protected VpnPortipToPort getVpnPortipToPort(String vpnName, String fixedIp) {
2408         InstanceIdentifier<VpnPortipToPort> id = buildVpnPortipToPortIdentifier(vpnName, fixedIp);
2409         Optional<VpnPortipToPort> vpnPortipToPortData = read(LogicalDatastoreType.CONFIGURATION, id);
2410         if (vpnPortipToPortData.isPresent()) {
2411             return vpnPortipToPortData.get();
2412         }
2413         LOG.error("getVpnPortipToPort: Failed as vpnPortipToPortData DS is absent for VPN {} and fixed IP {}",
2414                 vpnName, fixedIp);
2415         return null;
2416     }
2417
2418     public static void enableArpLearning(Boolean isArpLearningEnabled) {
2419         arpLearningEnabled = isArpLearningEnabled;
2420     }
2421
2422     public static Boolean isArpLearningEnabled() {
2423         return arpLearningEnabled;
2424     }
2425 }