aclservice/impl/src/main/java/org/opendaylight/netvirt/aclservice/utils/AclServiceUtils.java

   1 /*
   2  * Copyright (c) 2016, 2018 Red Hat, Inc. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.netvirt.aclservice.utils;
  10
  11 import static org.opendaylight.controller.md.sal.binding.api.WriteTransaction.CREATE_MISSING_PARENTS;
  12 import static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  13 import static org.opendaylight.genius.infra.Datastore.OPERATIONAL;
  14
  15 import com.google.common.base.Optional;
  16 import com.google.common.collect.Lists;
  17 import com.google.common.net.InetAddresses;
  18 import com.google.common.util.concurrent.ListenableFuture;
  19 import java.math.BigInteger;
  20 import java.net.InetAddress;
  21 import java.net.UnknownHostException;
  22 import java.util.ArrayList;
  23 import java.util.Collection;
  24 import java.util.Collections;
  25 import java.util.HashSet;
  26 import java.util.Iterator;
  27 import java.util.List;
  28 import java.util.Objects;
  29 import java.util.Set;
  30 import java.util.SortedSet;
  31 import java.util.TreeSet;
  32 import java.util.concurrent.ExecutionException;
  33 import java.util.concurrent.Future;
  34 import javax.annotation.Nullable;
  35 import javax.inject.Inject;
  36 import javax.inject.Singleton;
  37 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  38 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  39 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  40 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  41 import org.opendaylight.genius.infra.Datastore.Operational;
  42 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  43 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  44 import org.opendaylight.genius.infra.TypedWriteTransaction;
  45 import org.opendaylight.genius.mdsalutil.ActionInfo;
  46 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  47 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  48 import org.opendaylight.genius.mdsalutil.MatchInfoBase;
  49 import org.opendaylight.genius.mdsalutil.MetaDataUtil;
  50 import org.opendaylight.genius.mdsalutil.NwConstants;
  51 import org.opendaylight.genius.mdsalutil.actions.ActionNxConntrack;
  52 import org.opendaylight.genius.mdsalutil.actions.ActionNxConntrack.NxCtAction;
  53 import org.opendaylight.genius.mdsalutil.instructions.InstructionApplyActions;
  54 import org.opendaylight.genius.mdsalutil.instructions.InstructionGotoTable;
  55 import org.opendaylight.genius.mdsalutil.instructions.InstructionWriteMetadata;
  56 import org.opendaylight.genius.mdsalutil.matches.MatchArpSpa;
  57 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetDestination;
  58 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetType;
  59 import org.opendaylight.genius.mdsalutil.matches.MatchIcmpv6;
  60 import org.opendaylight.genius.mdsalutil.matches.MatchIpProtocol;
  61 import org.opendaylight.genius.mdsalutil.matches.MatchIpv4Destination;
  62 import org.opendaylight.genius.mdsalutil.matches.MatchIpv4Source;
  63 import org.opendaylight.genius.mdsalutil.matches.MatchIpv6Destination;
  64 import org.opendaylight.genius.mdsalutil.matches.MatchIpv6Source;
  65 import org.opendaylight.genius.mdsalutil.matches.MatchMetadata;
  66 import org.opendaylight.genius.mdsalutil.matches.MatchUdpDestinationPort;
  67 import org.opendaylight.genius.mdsalutil.matches.MatchUdpSourcePort;
  68 import org.opendaylight.genius.mdsalutil.nxmatches.NxMatchRegister;
  69 import org.opendaylight.genius.mdsalutil.packet.IPProtocols;
  70 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  71 import org.opendaylight.netvirt.aclservice.api.AclServiceManager.MatchCriteria;
  72 import org.opendaylight.netvirt.aclservice.api.utils.AclInterface;
  73 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.AccessLists;
  74 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.Ipv4Acl;
  75 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.Acl;
  76 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.AclKey;
  77 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.AccessListEntries;
  78 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.Ace;
  79 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.ace.Matches;
  80 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.ace.matches.ace.type.AceIp;
  81 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  82 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
  83 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
  84 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Prefix;
  85 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  86 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfacesState;
  87 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  88 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  89 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  90 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
  91 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.AllocateIdInput;
  92 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.AllocateIdInputBuilder;
  93 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.AllocateIdOutput;
  94 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInput;
  95 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInputBuilder;
  96 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolOutput;
  97 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.DeleteIdPoolInput;
  98 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.DeleteIdPoolInputBuilder;
  99 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.DeleteIdPoolOutput;
 100 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
 101 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.ReleaseIdInput;
 102 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.ReleaseIdInputBuilder;
 103 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.ReleaseIdOutput;
 104 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceBindings;
 105 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceModeBase;
 106 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceModeEgress;
 107 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceTypeFlowBased;
 108 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.StypeOpenflow;
 109 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.StypeOpenflowBuilder;
 110 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.ServicesInfo;
 111 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.ServicesInfoKey;
 112 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServices;
 113 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServicesBuilder;
 114 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServicesKey;
 115 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
 116 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.config.rev160806.AclserviceConfig;
 117 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.AclPortsLookup;
 118 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.DirectionBase;
 119 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.IpPrefixOrAddress;
 120 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.IpPrefixOrAddressBuilder;
 121 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.IpVersionV6;
 122 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.SecurityRuleAttr;
 123 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.acl.ports.lookup.AclPortsByIp;
 124 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.acl.ports.lookup.AclPortsByIpKey;
 125 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.acl.ports.lookup.acl.ports.by.ip.AclIpPrefixes;
 126 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.acl.ports.lookup.acl.ports.by.ip.AclIpPrefixesKey;
 127 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.acl.ports.lookup.acl.ports.by.ip.acl.ip.prefixes.PortIds;
 128 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.acl.ports.lookup.acl.ports.by.ip.acl.ip.prefixes.PortIdsBuilder;
 129 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.acl.ports.lookup.acl.ports.by.ip.acl.ip.prefixes.PortIdsKey;
 130 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.interfaces._interface.AllowedAddressPairs;
 131 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.interfaces._interface.SubnetInfo;
 132 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
 133 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInterfaces;
 134 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
 135 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceKey;
 136 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterface;
 137 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterfaceKey;
 138 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxReg6;
 139 import org.opendaylight.yang.gen.v1.urn.opendaylight.serviceutils.srm.types.rev180626.NetvirtAcl;
 140 import org.opendaylight.yangtools.yang.binding.DataObject;
 141 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 142 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
 143 import org.opendaylight.yangtools.yang.common.RpcResult;
 144 import org.slf4j.Logger;
 145 import org.slf4j.LoggerFactory;
 146
 147 @Singleton
 148 public final class AclServiceUtils {
 149
 150     private static final Logger LOG = LoggerFactory.getLogger(AclServiceUtils.class);
 151
 152     private final DataBroker dataBroker;
 153     private final ManagedNewTransactionRunner txRunner;
 154     private final AclDataUtil aclDataUtil;
 155     private final AclserviceConfig config;
 156     private final IdManagerService idManager;
 157     private final JobCoordinator jobCoordinator;
 158
 159     @Inject
 160     public AclServiceUtils(DataBroker dataBroker, AclDataUtil aclDataUtil, AclserviceConfig config,
 161             IdManagerService idManager, JobCoordinator jobCoordinator) {
 162         this.dataBroker = dataBroker;
 163         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
 164         this.aclDataUtil = aclDataUtil;
 165         this.config = config;
 166         this.idManager = idManager;
 167         this.jobCoordinator = jobCoordinator;
 168     }
 169
 170     /**
 171      * Retrieves the Interface from the datastore.
 172      * @param broker the data broker
 173      * @param interfaceName the interface name
 174      * @return the interface.
 175      */
 176     public static Optional<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces
 177         .Interface> getInterface(DataBroker broker, String interfaceName) {
 178         return read(broker, LogicalDatastoreType.CONFIGURATION, getInterfaceIdentifier(interfaceName));
 179     }
 180
 181     /**
 182      * Builds the interface identifier.
 183      * @param interfaceName the interface name.
 184      * @return the interface identifier.
 185      */
 186     public static InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508
 187         .interfaces.Interface> getInterfaceIdentifier(String interfaceName) {
 188         return InstanceIdentifier.builder(Interfaces.class)
 189                 .child(
 190                     org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces
 191                     .Interface.class, new InterfaceKey(interfaceName)).build();
 192     }
 193
 194     /**
 195      * Retrieves the object from the datastore.
 196      * @param broker the data broker.
 197      * @param datastoreType the data store type.
 198      * @param path the wild card path.
 199      * @param <T> type of DataObject
 200      * @return the required object.
 201      */
 202     public static <T extends DataObject> Optional<T> read(
 203             DataBroker broker, LogicalDatastoreType datastoreType, InstanceIdentifier<T> path) {
 204         try (ReadOnlyTransaction tx = broker.newReadOnlyTransaction()) {
 205             return tx.read(datastoreType, path).checkedGet();
 206         } catch (ReadFailedException e) {
 207             LOG.error("Failed to read InstanceIdentifier {} from {}", path, datastoreType, e);
 208             return Optional.absent();
 209         }
 210     }
 211
 212     /**
 213      * Retrieves the interface state.
 214      * @param dataBroker the data broker.
 215      * @param interfaceName the interface name.
 216      * @return the interface state.
 217      */
 218     @Nullable
 219     public static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state
 220         .Interface getInterfaceStateFromOperDS(DataBroker dataBroker, String interfaceName) {
 221         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508
 222             .interfaces.state.Interface> ifStateId = buildStateInterfaceId(interfaceName);
 223         return MDSALUtil.read(LogicalDatastoreType.OPERATIONAL, ifStateId, dataBroker).orNull();
 224     }
 225
 226     /**
 227      * Build the interface state.
 228      * @param interfaceName the interface name.
 229      * @return the interface state.
 230      */
 231     public static InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508
 232         .interfaces.state.Interface> buildStateInterfaceId(String interfaceName) {
 233         InstanceIdentifierBuilder<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508
 234             .interfaces.state.Interface> idBuilder = InstanceIdentifier.builder(InterfacesState.class)
 235             .child(org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces
 236             .state.Interface.class, new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces
 237             .rev140508.interfaces.state.InterfaceKey(interfaceName));
 238         return idBuilder.build();
 239     }
 240
 241     /**
 242      * Retrieves the security rule attribute augmentation from the access list.
 243      * @param ace the access list entry
 244      * @return the security rule attributes
 245      */
 246     @Nullable
 247     public static SecurityRuleAttr getAccessListAttributes(Ace ace) {
 248         if (ace == null) {
 249             LOG.error("Ace is Null");
 250             return null;
 251         }
 252         SecurityRuleAttr aceAttributes = ace.augmentation(SecurityRuleAttr.class);
 253         if (aceAttributes == null) {
 254             LOG.error("Ace is null");
 255             return null;
 256         }
 257         return aceAttributes;
 258     }
 259
 260     /**
 261      * Returns the DHCP match.
 262      *
 263      * @param srcPort the source port.
 264      * @param dstPort the destination port.
 265      * @param lportTag the lport tag
 266      * @param serviceMode ingress or egress service
 267      * @return list of matches.
 268      */
 269     public static List<MatchInfoBase> buildDhcpMatches(int srcPort, int dstPort, int lportTag,
 270             Class<? extends ServiceModeBase> serviceMode) {
 271         List<MatchInfoBase> matches = new ArrayList<>(5);
 272         matches.add(MatchEthernetType.IPV4);
 273         matches.add(MatchIpProtocol.UDP);
 274         matches.add(new MatchUdpDestinationPort(dstPort));
 275         matches.add(new MatchUdpSourcePort(srcPort));
 276         matches.add(AclServiceUtils.buildLPortTagMatch(lportTag, serviceMode));
 277         return matches;
 278     }
 279
 280     /**
 281      * Returns the DHCPv6 match.
 282      *
 283      * @param srcPort the source port.
 284      * @param dstPort the destination port.
 285      * @param lportTag the lport tag
 286      * @param serviceMode ingress or egress
 287      * @return list of matches.
 288      */
 289     public static List<MatchInfoBase> buildDhcpV6Matches(int srcPort, int dstPort, int lportTag,
 290             Class<? extends ServiceModeBase> serviceMode) {
 291         List<MatchInfoBase> matches = new ArrayList<>(6);
 292         matches.add(MatchEthernetType.IPV6);
 293         matches.add(MatchIpProtocol.UDP);
 294         matches.add(new MatchUdpDestinationPort(dstPort));
 295         matches.add(new MatchUdpSourcePort(srcPort));
 296         matches.add(AclServiceUtils.buildLPortTagMatch(lportTag, serviceMode));
 297         return matches;
 298     }
 299
 300     /**
 301      * Returns the ICMPv6 match.
 302      *
 303      * @param icmpType the icmpv6-type.
 304      * @param icmpCode the icmpv6-code.
 305      * @param lportTag the lport tag
 306      * @param serviceMode ingress or egress
 307      * @return list of matches.
 308      */
 309     public static List<MatchInfoBase> buildIcmpV6Matches(int icmpType, int icmpCode, int lportTag,
 310             Class<? extends ServiceModeBase> serviceMode) {
 311         List<MatchInfoBase> matches = new ArrayList<>();
 312         matches.add(MatchEthernetType.IPV6);
 313         matches.add(MatchIpProtocol.ICMPV6);
 314         if (icmpType != 0) {
 315             matches.add(new MatchIcmpv6((short) icmpType, (short) icmpCode));
 316         }
 317         matches.add(AclServiceUtils.buildLPortTagMatch(lportTag, serviceMode));
 318         return matches;
 319     }
 320
 321     public static List<MatchInfoBase> buildBroadcastIpV4Matches(String ipAddr) {
 322         List<MatchInfoBase> matches = new ArrayList<>(2);
 323         matches.add(new MatchEthernetDestination(new MacAddress(AclConstants.BROADCAST_MAC)));
 324         matches.addAll(AclServiceUtils.buildIpMatches(IpPrefixOrAddressBuilder.getDefaultInstance(ipAddr),
 325                 MatchCriteria.MATCH_DESTINATION));
 326         return matches;
 327     }
 328
 329     public static List<MatchInfoBase> buildL2BroadcastMatches() {
 330         List<MatchInfoBase> matches = new ArrayList<>();
 331         matches.add(new MatchEthernetDestination(new MacAddress(AclConstants.BROADCAST_MAC)));
 332         return matches;
 333     }
 334
 335     /**
 336      * Builds the service id.
 337      *
 338      * @param interfaceName the interface name
 339      * @param serviceIndex the service index
 340      * @param serviceMode the service mode
 341      * @return the instance identifier
 342      */
 343     public static InstanceIdentifier<BoundServices> buildServiceId(String interfaceName, short serviceIndex,
 344             Class<? extends ServiceModeBase> serviceMode) {
 345         return InstanceIdentifier.builder(ServiceBindings.class)
 346                 .child(ServicesInfo.class, new ServicesInfoKey(interfaceName, serviceMode))
 347                 .child(BoundServices.class, new BoundServicesKey(serviceIndex)).build();
 348     }
 349
 350     /**
 351      * Gets the bound services.
 352      *
 353      * @param serviceName the service name
 354      * @param servicePriority the service priority
 355      * @param flowPriority the flow priority
 356      * @param cookie the cookie
 357      * @param instructions the instructions
 358      * @return the bound services
 359      */
 360     public static BoundServices getBoundServices(String serviceName, short servicePriority, int flowPriority,
 361             BigInteger cookie, List<Instruction> instructions) {
 362         StypeOpenflowBuilder augBuilder = new StypeOpenflowBuilder().setFlowCookie(cookie).setFlowPriority(flowPriority)
 363                 .setInstruction(instructions);
 364         return new BoundServicesBuilder().withKey(new BoundServicesKey(servicePriority)).setServiceName(serviceName)
 365                 .setServicePriority(servicePriority).setServiceType(ServiceTypeFlowBased.class)
 366                 .addAugmentation(StypeOpenflow.class, augBuilder.build()).build();
 367     }
 368
 369     public static List<Uuid> getUpdatedAclList(List<Uuid> updatedAclList, List<Uuid> currentAclList) {
 370         if (updatedAclList == null) {
 371             return Collections.emptyList();
 372         }
 373         List<Uuid> newAclList = new ArrayList<>(updatedAclList);
 374         if (currentAclList == null) {
 375             return newAclList;
 376         }
 377         List<Uuid> origAclList = new ArrayList<>(currentAclList);
 378         for (Iterator<Uuid> iterator = newAclList.iterator(); iterator.hasNext();) {
 379             Uuid updatedAclUuid = iterator.next();
 380             for (Uuid currentAclUuid :origAclList) {
 381                 if (updatedAclUuid.getValue().equals(currentAclUuid.getValue())) {
 382                     iterator.remove();
 383                 }
 384             }
 385         }
 386         return newAclList;
 387     }
 388
 389     @Nullable
 390     public static List<AllowedAddressPairs> getUpdatedAllowedAddressPairs(
 391             @Nullable List<AllowedAddressPairs> updatedAllowedAddressPairs,
 392             @Nullable List<AllowedAddressPairs> currentAllowedAddressPairs) {
 393         if (updatedAllowedAddressPairs == null) {
 394             return null;
 395         }
 396         List<AllowedAddressPairs> newAllowedAddressPairs = new ArrayList<>(updatedAllowedAddressPairs);
 397         if (currentAllowedAddressPairs == null) {
 398             return newAllowedAddressPairs;
 399         }
 400         List<AllowedAddressPairs> origAllowedAddressPairs = new ArrayList<>(currentAllowedAddressPairs);
 401         for (Iterator<AllowedAddressPairs> iterator = newAllowedAddressPairs.iterator(); iterator.hasNext();) {
 402             AllowedAddressPairs updatedAllowedAddressPair = iterator.next();
 403             for (AllowedAddressPairs currentAllowedAddressPair : origAllowedAddressPairs) {
 404                 if (updatedAllowedAddressPair.key().equals(currentAllowedAddressPair.key())) {
 405                     iterator.remove();
 406                     break;
 407                 }
 408             }
 409         }
 410         return newAllowedAddressPairs;
 411     }
 412
 413     @Nullable
 414     public static BigInteger getDpIdFromIterfaceState(org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf
 415             .interfaces.rev140508.interfaces.state.Interface interfaceState) {
 416         BigInteger dpId = null;
 417         List<String> ofportIds = interfaceState.getLowerLayerIf();
 418         if (ofportIds != null && !ofportIds.isEmpty()) {
 419             NodeConnectorId nodeConnectorId = new NodeConnectorId(ofportIds.get(0));
 420             dpId = BigInteger.valueOf(MDSALUtil.getDpnIdFromPortName(nodeConnectorId));
 421         }
 422         return dpId;
 423     }
 424
 425     public static List<String> getIpBroadcastAddresses(List<SubnetInfo> subnetInfoList) {
 426         List<String> ipBroadcastAddresses = new ArrayList<>();
 427         for (SubnetInfo subnetInfo : subnetInfoList) {
 428             IpPrefix cidrIpPrefix = subnetInfo.getIpPrefix().getIpPrefix();
 429             if (cidrIpPrefix != null) {
 430                 Ipv4Prefix cidrIpv4Prefix = cidrIpPrefix.getIpv4Prefix();
 431                 if (cidrIpv4Prefix != null) {
 432                     ipBroadcastAddresses.add(getBroadcastAddressFromCidr(cidrIpv4Prefix.getValue()));
 433                 }
 434             }
 435         }
 436         return ipBroadcastAddresses;
 437     }
 438
 439     public static String getBroadcastAddressFromCidr(String cidr) {
 440         String[] ipaddressValues = cidr.split("/");
 441         int address = InetAddresses.coerceToInteger(InetAddresses.forString(ipaddressValues[0]));
 442         int cidrPart = Integer.parseInt(ipaddressValues[1]);
 443         int netmask = 0;
 444         for (int j = 0; j < cidrPart; ++j) {
 445             netmask |= 1 << 31 - j;
 446         }
 447         int network = address & netmask;
 448         int broadcast = network | ~netmask;
 449         return InetAddresses.toAddrString(InetAddresses.fromInteger(broadcast));
 450     }
 451
 452     /**
 453      * Builds the ip matches.
 454      *
 455      * @param ipPrefixOrAddress the ip prefix or address
 456      * @param matchCriteria the source_ip or destination_ip used for the match
 457      * @return the list
 458      */
 459     public static List<MatchInfoBase> buildIpMatches(IpPrefixOrAddress ipPrefixOrAddress,
 460                                                      MatchCriteria matchCriteria) {
 461         List<MatchInfoBase> flowMatches = new ArrayList<>();
 462         IpPrefix ipPrefix = ipPrefixOrAddress.getIpPrefix();
 463         if (ipPrefix != null) {
 464             Ipv4Prefix ipv4Prefix = ipPrefix.getIpv4Prefix();
 465             if (ipv4Prefix != null) {
 466                 flowMatches.add(MatchEthernetType.IPV4);
 467                 if (!ipv4Prefix.getValue().equals(AclConstants.IPV4_ALL_NETWORK)) {
 468                     flowMatches.add(matchCriteria == MatchCriteria.MATCH_SOURCE ? new MatchIpv4Source(ipv4Prefix)
 469                             : new MatchIpv4Destination(ipv4Prefix));
 470                 }
 471             } else {
 472                 flowMatches.add(MatchEthernetType.IPV6);
 473                 flowMatches.add(matchCriteria == MatchCriteria.MATCH_SOURCE ? new MatchIpv6Source(
 474                         ipPrefix.getIpv6Prefix()) : new MatchIpv6Destination(ipPrefix.getIpv6Prefix()));
 475             }
 476         } else {
 477             IpAddress ipAddress = ipPrefixOrAddress.getIpAddress();
 478             if (ipAddress.getIpv4Address() != null) {
 479                 flowMatches.add(MatchEthernetType.IPV4);
 480                 flowMatches.add(matchCriteria == MatchCriteria.MATCH_SOURCE ? new MatchIpv4Source(
 481                         ipAddress.getIpv4Address().getValue(), "32") : new MatchIpv4Destination(
 482                         ipAddress.getIpv4Address().getValue(), "32"));
 483             } else {
 484                 flowMatches.add(MatchEthernetType.IPV6);
 485                 flowMatches.add(matchCriteria == MatchCriteria.MATCH_SOURCE ? new MatchIpv6Source(
 486                         ipAddress.getIpv6Address().getValue() + "/128") : new MatchIpv6Destination(
 487                         ipAddress.getIpv6Address().getValue() + "/128"));
 488             }
 489         }
 490         return flowMatches;
 491     }
 492
 493     /**
 494      * Builds the arp ip matches.
 495      * @param ipPrefixOrAddress the ip prefix or address
 496      * @return the MatchInfoBase list
 497      */
 498     public static List<MatchInfoBase> buildArpIpMatches(IpPrefixOrAddress ipPrefixOrAddress) {
 499         List<MatchInfoBase> flowMatches = new ArrayList<>();
 500         IpPrefix ipPrefix = ipPrefixOrAddress.getIpPrefix();
 501         if (ipPrefix != null) {
 502             Ipv4Prefix ipv4Prefix = ipPrefix.getIpv4Prefix();
 503             if (ipv4Prefix != null && !ipv4Prefix.getValue().equals(AclConstants.IPV4_ALL_NETWORK)) {
 504                 flowMatches.add(new MatchArpSpa(ipv4Prefix));
 505             }
 506         } else {
 507             IpAddress ipAddress = ipPrefixOrAddress.getIpAddress();
 508             if (ipAddress != null && ipAddress.getIpv4Address() != null) {
 509                 flowMatches.add(new MatchArpSpa(ipAddress.getIpv4Address().getValue(), "32"));
 510             }
 511         }
 512         return flowMatches;
 513     }
 514
 515     public static MatchInfoBase buildRemoteAclTagMetadataMatch(Integer remoteAclTag) {
 516         return new MatchMetadata(getRemoteAclTagMetadata(BigInteger.valueOf(remoteAclTag)),
 517                 MetaDataUtil.METADATA_MASK_REMOTE_ACL_TAG);
 518     }
 519
 520     public static BigInteger getRemoteAclTagMetadata(BigInteger remoteAclTag) {
 521         return remoteAclTag.shiftLeft(4);
 522     }
 523
 524     public static BigInteger getDropFlowCookie(int lport) {
 525         return MetaDataUtil.getLportTagMetaData(lport).or(AclConstants.COOKIE_ACL_DROP_FLOW);
 526     }
 527
 528     /**
 529      * Does IPv4 address exists in the list of allowed address pair.
 530      *
 531      * @param aaps the allowed address pairs
 532      * @return true, if successful
 533      */
 534     public static boolean doesIpv4AddressExists(List<AllowedAddressPairs> aaps) {
 535         if (aaps == null) {
 536             return false;
 537         }
 538         for (AllowedAddressPairs aap : aaps) {
 539             IpPrefixOrAddress ipPrefixOrAddress = aap.getIpAddress();
 540             IpPrefix ipPrefix = ipPrefixOrAddress.getIpPrefix();
 541             if (ipPrefix != null) {
 542                 if (ipPrefix.getIpv4Prefix() != null) {
 543                     return true;
 544                 }
 545             } else {
 546                 IpAddress ipAddress = ipPrefixOrAddress.getIpAddress();
 547                 if (ipAddress != null && ipAddress.getIpv4Address() != null) {
 548                     return true;
 549                 }
 550             }
 551         }
 552         return false;
 553     }
 554
 555     /**
 556      * Does IPv6 address exists in the list of allowed address pair.
 557      *
 558      * @param aaps the allowed address pairs
 559      * @return true, if successful
 560      */
 561     public static boolean doesIpv6AddressExists(List<AllowedAddressPairs> aaps) {
 562         if (aaps == null) {
 563             return false;
 564         }
 565         for (AllowedAddressPairs aap : aaps) {
 566             IpPrefixOrAddress ipPrefixOrAddress = aap.getIpAddress();
 567             IpPrefix ipPrefix = ipPrefixOrAddress.getIpPrefix();
 568             if (ipPrefix != null) {
 569                 if (ipPrefix.getIpv6Prefix() != null) {
 570                     return true;
 571                 }
 572             } else {
 573                 IpAddress ipAddress = ipPrefixOrAddress.getIpAddress();
 574                 if (ipAddress != null && ipAddress.getIpv6Address() != null) {
 575                     return true;
 576                 }
 577             }
 578         }
 579         return false;
 580     }
 581
 582     /**
 583      * Gets the lport tag match.
 584      * Ingress match is based on metadata and egress match is based on masked reg6
 585      *
 586      * @param lportTag the lport tag
 587      * @param serviceMode ingress or egress service mode
 588      * @return the lport tag match
 589      */
 590     public static MatchInfoBase buildLPortTagMatch(int lportTag, Class<? extends ServiceModeBase> serviceMode) {
 591         if (serviceMode != null && serviceMode.isAssignableFrom(ServiceModeEgress.class)) {
 592             return new NxMatchRegister(NxmNxReg6.class, MetaDataUtil.getLportTagForReg6(lportTag).longValue(),
 593                     MetaDataUtil.getLportTagMaskForReg6());
 594         } else {
 595             return new MatchMetadata(MetaDataUtil.getLportTagMetaData(lportTag), MetaDataUtil.METADATA_MASK_LPORT_TAG);
 596         }
 597     }
 598
 599     public static List<MatchInfoBase> buildMatchesForLPortTagAndRemoteAclTag(Integer lportTag, Integer remoteAclTag,
 600             Class<? extends ServiceModeBase> serviceMode) {
 601         List<MatchInfoBase> matches = new ArrayList<>();
 602         if (serviceMode != null && serviceMode.isAssignableFrom(ServiceModeEgress.class)) {
 603             matches.add(AclServiceUtils.buildLPortTagMatch(lportTag, serviceMode));
 604             matches.add(AclServiceUtils.buildRemoteAclTagMetadataMatch(remoteAclTag));
 605         } else {
 606             // In case of ingress service mode, only metadata is used for
 607             // matching both lportTag and aclTag. Hence performing "or"
 608             // operation on both lportTag and aclTag metadata.
 609             BigInteger metaData = MetaDataUtil.getLportTagMetaData(lportTag)
 610                     .or(getRemoteAclTagMetadata(BigInteger.valueOf(remoteAclTag)));
 611             BigInteger metaDataMask =
 612                     MetaDataUtil.METADATA_MASK_LPORT_TAG.or(MetaDataUtil.METADATA_MASK_REMOTE_ACL_TAG);
 613             matches.add(new MatchMetadata(metaData, metaDataMask));
 614         }
 615         return matches;
 616     }
 617
 618     public static Collection<? extends MatchInfoBase> buildMatchesForLPortTagAndConntrackClassifierType(int lportTag,
 619             AclConntrackClassifierType conntrackClassifierType, Class<? extends ServiceModeBase> serviceMode) {
 620         List<MatchInfoBase> matches = new ArrayList<>();
 621         if (serviceMode != null && serviceMode.isAssignableFrom(ServiceModeEgress.class)) {
 622             matches.add(AclServiceUtils.buildLPortTagMatch(lportTag, serviceMode));
 623             matches.add(AclServiceUtils.buildAclConntrackClassifierTypeMatch(conntrackClassifierType));
 624         } else {
 625             // In case of ingress service mode, only metadata is used for
 626             // matching both lportTag and conntrackClassifierType. Hence performing "or"
 627             // operation on both lportTag and conntrackClassifierType metadata.
 628             BigInteger metaData = MetaDataUtil.getLportTagMetaData(lportTag)
 629                     .or(MetaDataUtil.getAclConntrackClassifierTypeFromMetaData(conntrackClassifierType.getValue()));
 630             BigInteger metaDataMask =
 631                     MetaDataUtil.METADATA_MASK_LPORT_TAG.or(MetaDataUtil.METADATA_MASK_ACL_CONNTRACK_CLASSIFIER_TYPE);
 632             matches.add(new MatchMetadata(metaData, metaDataMask));
 633         }
 634         return matches;
 635     }
 636
 637     public static InstructionWriteMetadata getWriteMetadataForAclClassifierType(
 638             AclConntrackClassifierType conntrackClassifierType) {
 639         return new InstructionWriteMetadata(
 640                 MetaDataUtil.getAclConntrackClassifierTypeFromMetaData(conntrackClassifierType.getValue()),
 641                 MetaDataUtil.METADATA_MASK_ACL_CONNTRACK_CLASSIFIER_TYPE);
 642     }
 643
 644     public static InstructionWriteMetadata getWriteMetadataForDropFlag() {
 645         return new InstructionWriteMetadata(MetaDataUtil.getAclDropMetaData(AclConstants.METADATA_DROP_FLAG),
 646                 MetaDataUtil.METADATA_MASK_ACL_DROP);
 647     }
 648
 649     public static InstructionWriteMetadata getWriteMetadataForRemoteAclTag(Integer remoteAclTag) {
 650         return new InstructionWriteMetadata(getRemoteAclTagMetadata(BigInteger.valueOf(remoteAclTag)),
 651                 MetaDataUtil.METADATA_MASK_REMOTE_ACL_TAG);
 652     }
 653
 654     public static MatchInfoBase buildAclConntrackClassifierTypeMatch(
 655             AclConntrackClassifierType conntrackSupportedType) {
 656         return new MatchMetadata(
 657                 MetaDataUtil.getAclConntrackClassifierTypeFromMetaData(conntrackSupportedType.getValue()),
 658                 MetaDataUtil.METADATA_MASK_ACL_CONNTRACK_CLASSIFIER_TYPE);
 659     }
 660
 661     public AclserviceConfig getConfig() {
 662         return config;
 663     }
 664
 665     public static boolean isIPv4Address(AllowedAddressPairs aap) {
 666         IpPrefixOrAddress ipPrefixOrAddress = aap.getIpAddress();
 667         IpPrefix ipPrefix = ipPrefixOrAddress.getIpPrefix();
 668         if (ipPrefix != null) {
 669             if (ipPrefix.getIpv4Prefix() != null) {
 670                 return true;
 671             }
 672         } else {
 673             IpAddress ipAddress = ipPrefixOrAddress.getIpAddress();
 674             if (ipAddress != null && ipAddress.getIpv4Address() != null) {
 675                 return true;
 676             }
 677         }
 678         return false;
 679     }
 680
 681     public static boolean isNotIpv4AllNetwork(AllowedAddressPairs aap) {
 682         IpPrefix ipPrefix = aap.getIpAddress().getIpPrefix();
 683         if (ipPrefix != null && ipPrefix.getIpv4Prefix() != null
 684                 && ipPrefix.getIpv4Prefix().getValue().equals(AclConstants.IPV4_ALL_NETWORK)) {
 685             return false;
 686         }
 687         return true;
 688     }
 689
 690     protected static boolean isNotIpv6AllNetwork(AllowedAddressPairs aap) {
 691         IpPrefix ipPrefix = aap.getIpAddress().getIpPrefix();
 692         if (ipPrefix != null && ipPrefix.getIpv6Prefix() != null
 693                 && ipPrefix.getIpv6Prefix().getValue().equals(AclConstants.IPV6_ALL_NETWORK)) {
 694             return false;
 695         }
 696         return true;
 697     }
 698
 699     public static boolean isNotIpAllNetwork(AllowedAddressPairs aap) {
 700         return isNotIpv4AllNetwork(aap) && isNotIpv6AllNetwork(aap);
 701     }
 702
 703     @Nullable
 704     public static Long getElanIdFromInterface(String elanInterfaceName, DataBroker broker) {
 705         ElanInterface elanInterface = getElanInterfaceByElanInterfaceName(elanInterfaceName, broker);
 706         if (null != elanInterface) {
 707             ElanInstance elanInfo = getElanInstanceByName(elanInterface.getElanInstanceName(), broker);
 708             return elanInfo.getElanTag();
 709         }
 710         return null;
 711     }
 712
 713     @Nullable
 714     public static ElanInterface getElanInterfaceByElanInterfaceName(String elanInterfaceName,DataBroker broker) {
 715         InstanceIdentifier<ElanInterface> elanInterfaceId = getElanInterfaceConfigurationDataPathId(elanInterfaceName);
 716         return read(broker, LogicalDatastoreType.CONFIGURATION, elanInterfaceId).orNull();
 717     }
 718
 719     public static InstanceIdentifier<ElanInterface> getElanInterfaceConfigurationDataPathId(String interfaceName) {
 720         return InstanceIdentifier.builder(ElanInterfaces.class)
 721                 .child(ElanInterface.class, new ElanInterfaceKey(interfaceName)).build();
 722     }
 723
 724     // elan-instances config container
 725     @Nullable
 726     public static ElanInstance getElanInstanceByName(String elanInstanceName, DataBroker broker) {
 727         InstanceIdentifier<ElanInstance> elanIdentifierId = getElanInstanceConfigurationDataPath(elanInstanceName);
 728         return read(broker, LogicalDatastoreType.CONFIGURATION, elanIdentifierId).orNull();
 729     }
 730
 731     public static InstanceIdentifier<ElanInstance> getElanInstanceConfigurationDataPath(String elanInstanceName) {
 732         return InstanceIdentifier.builder(ElanInstances.class)
 733                 .child(ElanInstance.class, new ElanInstanceKey(elanInstanceName)).build();
 734     }
 735
 736     public void deleteAcesFromConfigDS(String aclName, List<Ace> deletedAceRules) {
 737         List<List<Ace>> acesParts = Lists.partition(deletedAceRules, AclConstants.ACES_PER_TRANSACTION);
 738         for (List<Ace> acePart : acesParts) {
 739             jobCoordinator.enqueueJob(aclName,
 740                 () -> Collections.singletonList(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 741                     tx -> {
 742                         for (Ace ace: acePart) {
 743                             InstanceIdentifier<Ace> id = InstanceIdentifier.builder(AccessLists.class)
 744                                     .child(Acl.class, new AclKey(aclName, Ipv4Acl.class)).child(AccessListEntries.class)
 745                                     .child(Ace.class, ace.key()).build();
 746                             tx.delete(id);
 747                         }
 748                     })), AclConstants.ACEDELETE_MAX_RETRIES);
 749         }
 750     }
 751
 752     public static Integer allocateId(IdManagerService idManager, String poolName, String idKey, Integer defaultId) {
 753         AllocateIdInput getIdInput = new AllocateIdInputBuilder().setPoolName(poolName).setIdKey(idKey).build();
 754         try {
 755             Future<RpcResult<AllocateIdOutput>> result = idManager.allocateId(getIdInput);
 756             RpcResult<AllocateIdOutput> rpcResult = result.get();
 757             if (rpcResult.isSuccessful()) {
 758                 Integer allocatedId = rpcResult.getResult().getIdValue().intValue();
 759                 LOG.debug("Allocated ACL ID: {} with key: {} into pool: {}", allocatedId, idKey, poolName);
 760                 return allocatedId;
 761             } else {
 762                 LOG.error("RPC Call to Get Unique Id for key {} from pool {} returned with Errors {}",
 763                         idKey, poolName, rpcResult.getErrors());
 764             }
 765         } catch (InterruptedException | ExecutionException e) {
 766             LOG.error("Exception when getting Unique Id for key {} from pool {} ", idKey, poolName, e);
 767         }
 768         return defaultId;
 769     }
 770
 771     public static void releaseId(IdManagerService idManager, String poolName, String idKey) {
 772         ReleaseIdInput idInput = new ReleaseIdInputBuilder().setPoolName(poolName).setIdKey(idKey).build();
 773         try {
 774             RpcResult<ReleaseIdOutput> rpcResult = idManager.releaseId(idInput).get();
 775             if (!rpcResult.isSuccessful()) {
 776                 LOG.error("RPC Call to release Id with Key {} from pool {} returned with Errors {}",
 777                         idKey, poolName, rpcResult.getErrors());
 778             } else {
 779                 LOG.debug("Released ACL ID with key: {} from pool: {}", idKey, poolName);
 780             }
 781         } catch (InterruptedException | ExecutionException e) {
 782             LOG.error("Exception when releasing Id for key {} from pool {} ", idKey, poolName, e);
 783         }
 784     }
 785
 786     /**
 787      * Gets the ACL tag from cache. If not found in cache, tries to allocate and
 788      * return the value.
 789      *
 790      * @param aclId the acl id
 791      * @return the acl tag
 792      */
 793     @Nullable
 794     public Integer getAclTag(final Uuid aclId) {
 795         String aclName = aclId.getValue();
 796         Integer aclTag = this.aclDataUtil.getAclTag(aclName);
 797         if (aclTag == null) {
 798             LOG.debug("ACL tag not found in cache for ACL={}, trying to allocate again.", aclName);
 799             aclTag = allocateAclTag(aclName);
 800             if (aclTag != null && aclTag != AclConstants.INVALID_ACL_TAG) {
 801                 this.aclDataUtil.addAclTag(aclName, aclTag);
 802             }
 803         }
 804         return aclTag;
 805     }
 806
 807     /**
 808      * Allocate ACL tag.
 809      *
 810      * @param aclName the ACL name
 811      * @return the integer
 812      */
 813     public Integer allocateAclTag(String aclName) {
 814         return AclServiceUtils.allocateId(this.idManager, AclConstants.ACL_TAG_POOL_NAME, aclName,
 815                                           AclConstants.INVALID_ACL_TAG);
 816     }
 817
 818     /**
 819      * Release ACL tag.
 820      *
 821      * @param aclName the ACL name
 822      */
 823     public void releaseAclTag(String aclName) {
 824         AclServiceUtils.releaseId(this.idManager, AclConstants.ACL_TAG_POOL_NAME, aclName);
 825     }
 826
 827     /**
 828      * Indicates whether the interface has port security enabled.
 829      *
 830      * @param aclInterface the interface.
 831      * @return true if port is security enabled.
 832      */
 833     public static boolean isOfInterest(AclInterface aclInterface) {
 834         return aclInterface != null && aclInterface.isPortSecurityEnabled();
 835     }
 836
 837     /**
 838      * Creates the id pool for ACL tag.
 839      *
 840      * @param poolName the pool name
 841      */
 842     private void createIdPoolForAclTag(String poolName) {
 843         CreateIdPoolInput createPool = new CreateIdPoolInputBuilder()
 844                 .setPoolName(poolName).setLow(AclConstants.ACL_TAG_POOL_START)
 845                 .setHigh(AclConstants.ACL_TAG_POOL_END).build();
 846         try {
 847             Future<RpcResult<CreateIdPoolOutput>> result = this.idManager.createIdPool(createPool);
 848             if (result != null && result.get().isSuccessful()) {
 849                 LOG.debug("Created IdPool for {}", poolName);
 850             }
 851         } catch (InterruptedException | ExecutionException e) {
 852             LOG.error("Failed to create ID pool [{}] for remote ACL ids", poolName, e);
 853             throw new RuntimeException("Failed to create ID pool [{}] for remote ACL ids", e);
 854         }
 855     }
 856
 857     /**
 858      * Delete id pool.
 859      *
 860      * @param poolName the pool name
 861      */
 862     public void deleteIdPool(String poolName) {
 863         DeleteIdPoolInput deletePool = new DeleteIdPoolInputBuilder().setPoolName(poolName).build();
 864         try {
 865             Future<RpcResult<DeleteIdPoolOutput>> result = this.idManager.deleteIdPool(deletePool);
 866             if (result != null && result.get().isSuccessful()) {
 867                 LOG.debug("Deleted IdPool for {}", poolName);
 868             }
 869         } catch (InterruptedException | ExecutionException e) {
 870             LOG.error("Failed to delete ID pool [{}]", poolName, e);
 871             throw new RuntimeException("Failed to delete ID pool [" + poolName + "]", e);
 872         }
 873     }
 874
 875     /**
 876      * Creates remote the acl id pools.
 877      */
 878     public void createRemoteAclIdPool() {
 879         createIdPoolForAclTag(AclConstants.ACL_TAG_POOL_NAME);
 880     }
 881
 882     /**
 883      * Delete remote the acl id pools.
 884      */
 885     public void deleteRemoteAclIdPool() {
 886         deleteIdPool(AclConstants.ACL_TAG_POOL_NAME);
 887     }
 888
 889     public static List<? extends MatchInfoBase> buildIpAndSrcServiceMatch(Integer aclTag, AllowedAddressPairs aap) {
 890         List<MatchInfoBase> flowMatches = new ArrayList<>();
 891         flowMatches.add(buildRemoteAclTagMetadataMatch(aclTag));
 892         if (aap.getIpAddress().getIpAddress() != null) {
 893             if (aap.getIpAddress().getIpAddress().getIpv4Address() != null) {
 894                 MatchEthernetType ipv4EthMatch = new MatchEthernetType(NwConstants.ETHTYPE_IPV4);
 895                 flowMatches.add(ipv4EthMatch);
 896                 MatchIpv4Source srcMatch = new MatchIpv4Source(
 897                         new Ipv4Prefix(aap.getIpAddress().getIpAddress().getIpv4Address().getValue() + "/32"));
 898                 flowMatches.add(srcMatch);
 899             } else if (aap.getIpAddress().getIpAddress().getIpv6Address() != null) {
 900                 MatchEthernetType ipv6EthMatch = new MatchEthernetType(NwConstants.ETHTYPE_IPV6);
 901                 flowMatches.add(ipv6EthMatch);
 902                 MatchIpv6Source srcMatch = new MatchIpv6Source(
 903                         new Ipv6Prefix(aap.getIpAddress().getIpAddress().getIpv6Address().getValue() + "/128"));
 904                 flowMatches.add(srcMatch);
 905             }
 906         } else if (aap.getIpAddress().getIpPrefix() != null) {
 907             if (aap.getIpAddress().getIpPrefix().getIpv4Prefix() != null) {
 908                 MatchEthernetType ipv4EthMatch = new MatchEthernetType(NwConstants.ETHTYPE_IPV4);
 909                 flowMatches.add(ipv4EthMatch);
 910                 MatchIpv4Source srcMatch = new MatchIpv4Source(aap.getIpAddress().getIpPrefix().getIpv4Prefix());
 911                 flowMatches.add(srcMatch);
 912             } else if (aap.getIpAddress().getIpPrefix().getIpv6Prefix() != null) {
 913                 MatchEthernetType ipv6EthMatch = new MatchEthernetType(NwConstants.ETHTYPE_IPV6);
 914                 flowMatches.add(ipv6EthMatch);
 915                 MatchIpv6Source srcMatch = new MatchIpv6Source(aap.getIpAddress().getIpPrefix().getIpv6Prefix());
 916                 flowMatches.add(srcMatch);
 917             }
 918         }
 919         return flowMatches;
 920     }
 921
 922     public static List<? extends MatchInfoBase> buildIpAndDstServiceMatch(Integer aclTag, AllowedAddressPairs aap) {
 923         List<MatchInfoBase> flowMatches = new ArrayList<>();
 924         flowMatches.add(buildRemoteAclTagMetadataMatch(aclTag));
 925
 926         if (aap.getIpAddress().getIpAddress() != null) {
 927             if (aap.getIpAddress().getIpAddress().getIpv4Address() != null) {
 928                 MatchEthernetType ipv4EthMatch = new MatchEthernetType(NwConstants.ETHTYPE_IPV4);
 929                 flowMatches.add(ipv4EthMatch);
 930                 MatchIpv4Destination dstMatch = new MatchIpv4Destination(
 931                         new Ipv4Prefix(aap.getIpAddress().getIpAddress().getIpv4Address().getValue() + "/32"));
 932                 flowMatches.add(dstMatch);
 933             } else if (aap.getIpAddress().getIpAddress().getIpv6Address() != null) {
 934                 MatchEthernetType ipv6EthMatch = new MatchEthernetType(NwConstants.ETHTYPE_IPV6);
 935                 flowMatches.add(ipv6EthMatch);
 936                 MatchIpv6Destination dstMatch = new MatchIpv6Destination(
 937                         new Ipv6Prefix(aap.getIpAddress().getIpAddress().getIpv6Address().getValue() + "/128"));
 938                 flowMatches.add(dstMatch);
 939             }
 940         } else if (aap.getIpAddress().getIpPrefix() != null) {
 941             if (aap.getIpAddress().getIpPrefix().getIpv4Prefix() != null) {
 942                 MatchEthernetType ipv4EthMatch = new MatchEthernetType(NwConstants.ETHTYPE_IPV4);
 943                 flowMatches.add(ipv4EthMatch);
 944                 MatchIpv4Destination dstMatch =
 945                         new MatchIpv4Destination(aap.getIpAddress().getIpPrefix().getIpv4Prefix());
 946                 flowMatches.add(dstMatch);
 947             } else if (aap.getIpAddress().getIpPrefix().getIpv6Prefix() != null) {
 948                 MatchEthernetType ipv6EthMatch = new MatchEthernetType(NwConstants.ETHTYPE_IPV6);
 949                 flowMatches.add(ipv6EthMatch);
 950                 MatchIpv6Destination dstMatch =
 951                         new MatchIpv6Destination(aap.getIpAddress().getIpPrefix().getIpv6Prefix());
 952                 flowMatches.add(dstMatch);
 953             }
 954         }
 955         return flowMatches;
 956     }
 957
 958     public static boolean isOfAclInterest(Acl acl) {
 959         if (acl.getAccessListEntries() != null) {
 960             List<Ace> aceList = acl.getAccessListEntries().getAce();
 961             if (aceList != null && !aceList.isEmpty()) {
 962                 return aceList.get(0).augmentation(SecurityRuleAttr.class) != null;
 963             }
 964         }
 965         return false;
 966     }
 967
 968     /**
 969      * Builds the ip protocol matches.
 970      *
 971      * @param etherType the ether type
 972      * @param protocol the protocol
 973      * @return the list of matches.
 974      */
 975     public static List<MatchInfoBase> buildIpProtocolMatches(MatchEthernetType etherType, IPProtocols protocol) {
 976         return Lists.newArrayList(etherType, new MatchIpProtocol(protocol.shortValue()));
 977     }
 978
 979     /**
 980      * Does ACE have remote group id.
 981      *
 982      * @param aceAttr the ace attr
 983      * @return true, if successful
 984      */
 985     public static boolean doesAceHaveRemoteGroupId(final SecurityRuleAttr aceAttr) {
 986         return aceAttr != null && aceAttr.getRemoteGroupId() != null;
 987     }
 988
 989     public SortedSet<Integer> getRemoteAclTags(@Nullable List<Uuid> aclIds, Class<? extends DirectionBase> direction) {
 990         SortedSet<Integer> remoteAclTags = new TreeSet<>();
 991         Set<Uuid> remoteAclIds = getRemoteAclIdsByDirection(aclIds, direction);
 992         for (Uuid remoteAclId : remoteAclIds) {
 993             Integer remoteAclTag = getAclTag(remoteAclId);
 994             if (remoteAclTag != null && remoteAclTag != AclConstants.INVALID_ACL_TAG) {
 995                 remoteAclTags.add(remoteAclTag);
 996             }
 997         }
 998         return remoteAclTags;
 999     }
1000
1001     public Set<Uuid> getRemoteAclIdsByDirection(@Nullable List<Uuid> aclIds, Class<? extends DirectionBase> direction) {
1002         Set<Uuid> remoteAclIds = new HashSet<>();
1003         if (aclIds == null || aclIds.isEmpty()) {
1004             return remoteAclIds;
1005         }
1006
1007         for (Uuid aclId : aclIds) {
1008             Acl acl = this.aclDataUtil.getAcl(aclId.getValue());
1009             if (null == acl) {
1010                 LOG.warn("ACL {} not found in cache.", aclId.getValue());
1011                 continue;
1012             }
1013             remoteAclIds.addAll(getRemoteAclIdsByDirection(acl, direction));
1014         }
1015         return remoteAclIds;
1016     }
1017
1018     public static Set<Uuid> getRemoteAclIdsByDirection(Acl acl, Class<? extends DirectionBase> direction) {
1019         Set<Uuid> remoteAclIds = new HashSet<>();
1020         AccessListEntries accessListEntries = acl.getAccessListEntries();
1021         if (accessListEntries != null && accessListEntries.getAce() != null) {
1022             for (Ace ace : accessListEntries.getAce()) {
1023                 SecurityRuleAttr aceAttr = AclServiceUtils.getAccessListAttributes(ace);
1024                 if (Objects.equals(aceAttr.getDirection(), direction) && doesAceHaveRemoteGroupId(aceAttr)) {
1025                     remoteAclIds.add(aceAttr.getRemoteGroupId());
1026                 }
1027             }
1028         }
1029         return remoteAclIds;
1030     }
1031
1032     /**
1033      * Skip delete in case of overlapping IP.
1034      *
1035      * <p>
1036      * When there are multiple ports (e.g., p1, p2, p3) having same AAP (e.g.,
1037      * 224.0.0.5) configured which are part of single SG, there would be single
1038      * flow in remote ACL table. When one of these ports (say p1) is deleted,
1039      * the single flow which is configured in remote ACL table shouldn't be
1040      * deleted. It should be deleted only when there are no more references to
1041      * it.
1042      *
1043      * @param portId the port id
1044      * @param remoteAclId the remote Acl Id
1045      * @param ipPrefix the ip prefix
1046      * @param addOrRemove the add or remove
1047      * @return true, if successful
1048      */
1049     public boolean skipDeleteInCaseOfOverlappingIP(String portId, Uuid remoteAclId, IpPrefixOrAddress ipPrefix,
1050             int addOrRemove) {
1051         boolean skipDelete = false;
1052         if (addOrRemove != NwConstants.DEL_FLOW) {
1053             return skipDelete;
1054         }
1055         AclIpPrefixes aclIpPrefixes = getAclIpPrefixesFromOperDs(remoteAclId.getValue(), ipPrefix);
1056         if (aclIpPrefixes != null && aclIpPrefixes.getPortIds() != null) {
1057             List<String> ignorePorts = Lists.newArrayList(portId);
1058             List<PortIds> portIds = new ArrayList<>(aclIpPrefixes.getPortIds());
1059             // Checking if there are any other ports excluding ignorePorts
1060             long noOfRemotePorts =
1061                     portIds.stream().map(PortIds::getPortId).filter(y -> !ignorePorts.contains(y)).count();
1062             if (noOfRemotePorts > 0) {
1063                 skipDelete = true;
1064             }
1065         }
1066         return skipDelete;
1067     }
1068
1069     public static InstanceIdentifier<AclPortsByIp> aclPortsByIpPath(String aclName) {
1070         return InstanceIdentifier.builder(AclPortsLookup.class)
1071                 .child(AclPortsByIp.class, new AclPortsByIpKey(aclName)).build();
1072     }
1073
1074     public static InstanceIdentifier<AclIpPrefixes> getAclIpPrefixesPath(String aclName, IpPrefixOrAddress ipPrefix) {
1075         return InstanceIdentifier.builder(AclPortsLookup.class).child(AclPortsByIp.class, new AclPortsByIpKey(aclName))
1076                 .child(AclIpPrefixes.class, new AclIpPrefixesKey(ipPrefix)).build();
1077     }
1078
1079     public static InstanceIdentifier<PortIds> getPortIdsPathInAclPortsLookup(String ruleName,
1080             IpPrefixOrAddress ipPrefix, String portId) {
1081         return InstanceIdentifier.builder(AclPortsLookup.class).child(AclPortsByIp.class, new AclPortsByIpKey(ruleName))
1082                 .child(AclIpPrefixes.class, new AclIpPrefixesKey(ipPrefix)).child(PortIds.class, new PortIdsKey(portId))
1083                 .build();
1084     }
1085
1086     public void addAclPortsLookupForInterfaceUpdate(AclInterface portBefore, AclInterface portAfter) {
1087         LOG.debug("Processing interface additions for port {}", portAfter.getInterfaceId());
1088         List<AllowedAddressPairs> addedAllowedAddressPairs = getUpdatedAllowedAddressPairs(
1089                 portAfter.getAllowedAddressPairs(), portBefore.getAllowedAddressPairs());
1090         if (addedAllowedAddressPairs != null && !addedAllowedAddressPairs.isEmpty()) {
1091             addAclPortsLookup(portAfter, portAfter.getSecurityGroups(), addedAllowedAddressPairs);
1092         }
1093
1094         List<Uuid> addedAcls = getUpdatedAclList(portAfter.getSecurityGroups(), portBefore.getSecurityGroups());
1095         if (addedAcls != null && !addedAcls.isEmpty()) {
1096             addAclPortsLookup(portAfter, addedAcls, portAfter.getAllowedAddressPairs());
1097         }
1098     }
1099
1100     public void deleteAclPortsLookupForInterfaceUpdate(AclInterface portBefore, AclInterface portAfter) {
1101         LOG.debug("Processing interface removals for port {}", portAfter.getInterfaceId());
1102         List<AllowedAddressPairs> deletedAllowedAddressPairs = getUpdatedAllowedAddressPairs(
1103                 portBefore.getAllowedAddressPairs(), portAfter.getAllowedAddressPairs());
1104         if (deletedAllowedAddressPairs != null && !deletedAllowedAddressPairs.isEmpty()) {
1105             deleteAclPortsLookup(portAfter, portAfter.getSecurityGroups(), deletedAllowedAddressPairs);
1106         }
1107
1108         List<Uuid> deletedAcls = getUpdatedAclList(portBefore.getSecurityGroups(), portAfter.getSecurityGroups());
1109         if (deletedAcls != null && !deletedAcls.isEmpty()) {
1110             deleteAclPortsLookup(portAfter, deletedAcls, portAfter.getAllowedAddressPairs());
1111         }
1112     }
1113
1114     public void addAclPortsLookup(AclInterface port, List<Uuid> aclList,
1115             List<AllowedAddressPairs> allowedAddresses) {
1116         String portId = port.getInterfaceId();
1117         LOG.trace("Adding AclPortsLookup for port={}, acls={}, AAPs={}", portId, aclList, allowedAddresses);
1118
1119         if (aclList == null || allowedAddresses == null || allowedAddresses.isEmpty()) {
1120             LOG.warn("aclList or allowedAddresses is null. port={}, acls={}, AAPs={}", portId, aclList,
1121                     allowedAddresses);
1122             return;
1123         }
1124
1125         for (Uuid aclId : aclList) {
1126             String aclName = aclId.getValue();
1127             jobCoordinator.enqueueJob(aclName.intern(), () -> {
1128                 List<ListenableFuture<Void>> futures = new ArrayList<>();
1129                 futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx -> {
1130                     for (AllowedAddressPairs aap : allowedAddresses) {
1131                         PortIds portIdObj =
1132                                 new PortIdsBuilder().withKey(new PortIdsKey(portId)).setPortId(portId).build();
1133                         InstanceIdentifier<PortIds> path =
1134                                 AclServiceUtils.getPortIdsPathInAclPortsLookup(aclName, aap.getIpAddress(), portId);
1135                         tx.put(path, portIdObj, CREATE_MISSING_PARENTS);
1136                     }
1137                 }));
1138                 return futures;
1139             });
1140         }
1141     }
1142
1143     public void deleteAclPortsLookup(AclInterface port, List<Uuid> aclList,
1144             List<AllowedAddressPairs> allowedAddresses) {
1145         String portId = port.getInterfaceId();
1146         LOG.trace("Deleting AclPortsLookup for port={}, acls={}, AAPs={}", portId, aclList, allowedAddresses);
1147
1148         if (aclList == null || allowedAddresses == null || allowedAddresses.isEmpty()) {
1149             LOG.warn("aclList or allowedAddresses is null. port={}, acls={}, AAPs={}", portId, aclList,
1150                     allowedAddresses);
1151             return;
1152         }
1153
1154         for (Uuid aclId : aclList) {
1155             String aclName = aclId.getValue();
1156             jobCoordinator.enqueueJob(aclName.intern(), () -> {
1157                 List<ListenableFuture<Void>> futures = new ArrayList<>();
1158                 futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx -> {
1159                     for (AllowedAddressPairs aap : allowedAddresses) {
1160                         InstanceIdentifier<PortIds> path =
1161                                 AclServiceUtils.getPortIdsPathInAclPortsLookup(aclName, aap.getIpAddress(), portId);
1162                         tx.delete(path);
1163                     }
1164
1165                     cleanUpStaleEntriesInAclPortsLookup(aclName, tx);
1166                 }));
1167                 return futures;
1168             });
1169         }
1170     }
1171
1172     private void cleanUpStaleEntriesInAclPortsLookup(String aclName, TypedWriteTransaction<Operational> tx) {
1173         AclPortsByIp aclPortsByIp = getAclPortsByIpFromOperDs(aclName);
1174         if (aclPortsByIp == null) {
1175             return;
1176         }
1177         boolean deleteEntireAcl;
1178         List<AclIpPrefixes> ipPrefixes = aclPortsByIp.getAclIpPrefixes();
1179         if (ipPrefixes == null || ipPrefixes.isEmpty()) {
1180             deleteEntireAcl = true;
1181         } else {
1182             boolean deleteMap = true;
1183             for (AclIpPrefixes ipPrefix : ipPrefixes) {
1184                 if (ipPrefix.getPortIds() != null && !ipPrefix.getPortIds().isEmpty()) {
1185                     deleteMap = false;
1186                     break;
1187                 }
1188             }
1189             deleteEntireAcl = deleteMap;
1190         }
1191         if (deleteEntireAcl) {
1192             tx.delete(AclServiceUtils.aclPortsByIpPath(aclName));
1193         } else {
1194             for (AclIpPrefixes ipPrefix : ipPrefixes) {
1195                 if (ipPrefix.getPortIds() == null || ipPrefix.getPortIds().isEmpty()) {
1196                     InstanceIdentifier<AclIpPrefixes> delPath =
1197                             AclServiceUtils.getAclIpPrefixesPath(aclName, ipPrefix.getIpPrefix());
1198                     tx.delete(delPath);
1199                 }
1200             }
1201         }
1202     }
1203
1204     @Nullable
1205     private AclPortsByIp getAclPortsByIpFromOperDs(String aclName) {
1206         InstanceIdentifier<AclPortsByIp> path = aclPortsByIpPath(aclName);
1207         try (ReadOnlyTransaction tx = dataBroker.newReadOnlyTransaction()) {
1208             return tx.read(LogicalDatastoreType.OPERATIONAL, path).checkedGet().orNull();
1209         } catch (ReadFailedException e) {
1210             LOG.error("Failed to read ACL ports {}", path, e);
1211             return null;
1212         }
1213     }
1214
1215     @Nullable
1216     private AclIpPrefixes getAclIpPrefixesFromOperDs(String aclName, IpPrefixOrAddress ipPrefix) {
1217         InstanceIdentifier<AclIpPrefixes> path = getAclIpPrefixesPath(aclName, ipPrefix);
1218         try (ReadOnlyTransaction tx = dataBroker.newReadOnlyTransaction()) {
1219             return tx.read(LogicalDatastoreType.OPERATIONAL, path).checkedGet().orNull();
1220         } catch (ReadFailedException e) {
1221             LOG.error("Failed to read ACL IP prefixes {}", path, e);
1222             return null;
1223         }
1224     }
1225
1226     /**
1227      * Gets the ace flow priority.
1228      *
1229      * @param aclName the acl name
1230      * @return the ace flow priority
1231      */
1232     public Integer getAceFlowPriority(String aclName) {
1233         Integer priority = AclConstants.ACE_DEFAULT_PRIORITY;
1234         Integer aclTag = getAclTag(new Uuid(aclName));
1235         if (aclTag != null && aclTag != AclConstants.INVALID_ACL_TAG) {
1236             // To handle overlapping rules, aclTag is added to priority
1237             priority += aclTag;
1238         } else {
1239             LOG.warn("aclTag={} is null or invalid for aclName={}", aclTag, aclName);
1240         }
1241         return priority;
1242     }
1243
1244     /**
1245      * Returns the hard timeout based on the protocol when a ACL rule removed from the instance.
1246      * It will returns the timeout configured in the {@link AclserviceConfig} class.
1247      *
1248      * @param ace the ace
1249      * @param aclServiceUtils acl service utils
1250      * @return the hard time out
1251      */
1252     public static Integer getHardTimoutForApplyStatefulChangeOnExistingTraffic(Ace ace,
1253             AclServiceUtils aclServiceUtils) {
1254         int hardTimeout = AclConstants.SECURITY_GROUP_ICMP_IDLE_TIME_OUT;
1255         Matches matches = ace.getMatches();
1256         AceIp acl = (AceIp) matches.getAceType();
1257         Short protocol = acl.getProtocol();
1258         if (protocol == null) {
1259             return hardTimeout;
1260         } else if (protocol == NwConstants.IP_PROT_TCP) {
1261             hardTimeout = aclServiceUtils.getConfig().getSecurityGroupTcpIdleTimeout();
1262         } else if (protocol == NwConstants.IP_PROT_UDP) {
1263             hardTimeout = aclServiceUtils.getConfig().getSecurityGroupUdpIdleTimeout();
1264         }
1265         return hardTimeout;
1266     }
1267
1268     /**
1269      * This method creates and returns the ct_mark instruction when a ACL rule removed from the
1270      * instance. This instruction will reset the ct_mark value and stops the existing traffics.
1271      *
1272      * @param filterTable the filterTable
1273      * @param elanId the Elan id
1274      * @return list of instruction
1275      */
1276     public static List<InstructionInfo> createCtMarkInstructionForNewState(Short filterTable, Long elanId) {
1277
1278         List<InstructionInfo> instructions = new ArrayList<>();
1279         List<ActionInfo> actionsInfos = new ArrayList<>();
1280         List<NxCtAction> ctActionsList = new ArrayList<>();
1281         NxCtAction nxCtMarkClearAction = new ActionNxConntrack.NxCtMark(AclConstants.CT_MARK_NEW_STATE);
1282         ctActionsList.add(nxCtMarkClearAction);
1283
1284         ActionNxConntrack actionNxConntrack = new ActionNxConntrack(2, 1, 0, elanId.intValue(),
1285             (short) 255, ctActionsList);
1286         actionsInfos.add(actionNxConntrack);
1287         instructions.add(new InstructionApplyActions(actionsInfos));
1288         instructions.add(new InstructionGotoTable(filterTable));
1289
1290         return instructions;
1291     }
1292
1293     public static List<AllowedAddressPairs> excludeMulticastAAPs(@Nullable List<AllowedAddressPairs> allowedAddresses) {
1294         List<AllowedAddressPairs> filteredAAPs = new ArrayList<>();
1295         if (allowedAddresses != null) {
1296             for (AllowedAddressPairs allowedAddress : allowedAddresses) {
1297                 InetAddress inetAddr = getInetAddress(allowedAddress.getIpAddress());
1298                 if (inetAddr != null && !inetAddr.isMulticastAddress()) {
1299                     filteredAAPs.add(allowedAddress);
1300                 }
1301             }
1302         }
1303         return filteredAAPs;
1304     }
1305
1306     public static String getRecoverServiceRegistryKey() {
1307         return NetvirtAcl.class.toString();
1308     }
1309
1310     @Nullable
1311     private static InetAddress getInetAddress(IpPrefixOrAddress ipPrefixOrAddress) {
1312         String addr;
1313
1314         IpPrefix ipPrefix = ipPrefixOrAddress.getIpPrefix();
1315         if (ipPrefix != null) {
1316             addr = ipPrefix.stringValue().split("/")[0];
1317         } else {
1318             IpAddress ipAddress = ipPrefixOrAddress.getIpAddress();
1319             if (ipAddress == null) {
1320                 LOG.error("Invalid address : {}", ipPrefixOrAddress);
1321                 return null;
1322             } else {
1323                 addr = ipAddress.stringValue();
1324             }
1325         }
1326         try {
1327             return InetAddress.getByName(addr);
1328         } catch (UnknownHostException e) {
1329             LOG.error("Invalid address : {}", addr, e);
1330             return null;
1331         }
1332     }
1333
1334     public static Boolean isIpv6Subnet(List<SubnetInfo> subnetInfoList) {
1335         if (subnetInfoList != null && !subnetInfoList.isEmpty()) {
1336             for (SubnetInfo subnetInfo : subnetInfoList) {
1337                 if (subnetInfo != null && IpVersionV6.class.equals(subnetInfo.getIpVersion())) {
1338                     return true;
1339                 }
1340             }
1341         }
1342         return false;
1343     }
1344
1345     /**
1346      * Gets the subnet difference by performing (subnetInfo1 - subnetInfo2).
1347      *
1348      * @param subnetInfo1 the subnet info 1
1349      * @param subnetInfo2 the subnet info 2
1350      * @return the subnet diff
1351      */
1352     public static List<SubnetInfo> getSubnetDiff(List<SubnetInfo> subnetInfo1, List<SubnetInfo> subnetInfo2) {
1353         if (subnetInfo1 == null) {
1354             return Collections.emptyList();
1355         }
1356         List<SubnetInfo> newSubnetList = new ArrayList<>(subnetInfo1);
1357         if (subnetInfo2 == null) {
1358             return newSubnetList;
1359         }
1360         newSubnetList.removeAll(subnetInfo2);
1361         return newSubnetList;
1362     }
1363 }