interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/commons/InterfaceManagerCommonUtils.java

   1 /*
   2  * Copyright (c) 2015 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.vpnservice.interfacemgr.commons;
  10
  11 import java.math.BigInteger;
  12 import java.util.ArrayList;
  13 import java.util.List;
  14
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.vpnservice.interfacemgr.IfmConstants;
  19 import org.opendaylight.vpnservice.interfacemgr.IfmUtil;
  20 import org.opendaylight.vpnservice.interfacemgr.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
  21 import org.opendaylight.vpnservice.mdsalutil.FlowEntity;
  22 import org.opendaylight.vpnservice.mdsalutil.InstructionInfo;
  23 import org.opendaylight.vpnservice.mdsalutil.InstructionType;
  24 import org.opendaylight.vpnservice.mdsalutil.MDSALUtil;
  25 import org.opendaylight.vpnservice.mdsalutil.MatchFieldType;
  26 import org.opendaylight.vpnservice.mdsalutil.MatchInfo;
  27 import org.opendaylight.vpnservice.mdsalutil.MetaDataUtil;
  28 import org.opendaylight.vpnservice.mdsalutil.NwConstants;
  29 import org.opendaylight.vpnservice.mdsalutil.interfaces.IMdsalApiManager;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.InterfaceBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.IdManagerService;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007._interface.child.info.InterfaceParentEntry;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007._interface.child.info.InterfaceParentEntryBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007._interface.child.info.InterfaceParentEntryKey;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007._interface.child.info._interface.parent.entry.InterfaceChildEntry;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007._interface.child.info._interface.parent.entry.InterfaceChildEntryBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007._interface.child.info._interface.parent.entry.InterfaceChildEntryKey;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.IfTunnel;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.IfTunnelBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.TunnelTypeMplsOverGre;
  53 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  54 import org.slf4j.Logger;
  55 import org.slf4j.LoggerFactory;
  56
  57 import com.google.common.base.Optional;
  58 import com.google.common.util.concurrent.ListenableFuture;
  59
  60 public class InterfaceManagerCommonUtils {
  61     private static final Logger LOG = LoggerFactory.getLogger(InterfaceManagerCommonUtils.class);
  62     public static NodeConnector getNodeConnectorFromInventoryOperDS(NodeConnectorId nodeConnectorId,
  63                                                                     DataBroker dataBroker) {
  64         NodeId nodeId = IfmUtil.getNodeIdFromNodeConnectorId(nodeConnectorId);
  65         InstanceIdentifier<NodeConnector> ncIdentifier = InstanceIdentifier.builder(Nodes.class)
  66                 .child(Node.class, new NodeKey(nodeId))
  67                 .child(NodeConnector.class, new NodeConnectorKey(nodeConnectorId)).build();
  68
  69         Optional<NodeConnector> nodeConnectorOptional = IfmUtil.read(LogicalDatastoreType.OPERATIONAL,
  70                 ncIdentifier, dataBroker);
  71         if (!nodeConnectorOptional.isPresent()) {
  72             return null;
  73         }
  74         return nodeConnectorOptional.get();
  75     }
  76
  77     public static InstanceIdentifier<Interface> getInterfaceIdentifier(InterfaceKey interfaceKey) {
  78         InstanceIdentifier.InstanceIdentifierBuilder<Interface> interfaceInstanceIdentifierBuilder =
  79                 InstanceIdentifier.builder(Interfaces.class).child(Interface.class, interfaceKey);
  80         return interfaceInstanceIdentifierBuilder.build();
  81     }
  82
  83     public static Interface getInterfaceFromConfigDS(InterfaceKey interfaceKey, DataBroker dataBroker) {
  84         InstanceIdentifier<Interface> interfaceId = getInterfaceIdentifier(interfaceKey);
  85         Optional<Interface> interfaceOptional = IfmUtil.read(LogicalDatastoreType.CONFIGURATION, interfaceId, dataBroker);
  86         if (!interfaceOptional.isPresent()) {
  87             return null;
  88         }
  89
  90         return interfaceOptional.get();
  91     }
  92
  93     public static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface getInterfaceStateFromOperDS(String interfaceName, DataBroker dataBroker) {
  94         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> ifStateId =
  95                 IfmUtil.buildStateInterfaceId(interfaceName);
  96         Optional<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> ifStateOptional =
  97                 IfmUtil.read(LogicalDatastoreType.OPERATIONAL, ifStateId, dataBroker);
  98         if (!ifStateOptional.isPresent()) {
  99             return null;
 100         }
 101
 102         return ifStateOptional.get();
 103     }
 104     public static void makeTunnelIngressFlow(List<ListenableFuture<Void>> futures, IMdsalApiManager mdsalApiManager,
 105                                              IfTunnel tunnel, BigInteger dpnId, long portNo, Interface iface, int ifIndex, int addOrRemoveFlow) {
 106         LOG.debug("make tunnel ingress flow for {}",iface.getName());
 107         String flowRef = InterfaceManagerCommonUtils.getTunnelInterfaceFlowRef(dpnId, NwConstants.VLAN_INTERFACE_INGRESS_TABLE, iface.getName());
 108         List<MatchInfo> matches = new ArrayList<MatchInfo>();
 109         List<InstructionInfo> mkInstructions = new ArrayList<InstructionInfo>();
 110         if (NwConstants.ADD_FLOW == addOrRemoveFlow) {
 111             matches.add(new MatchInfo(MatchFieldType.in_port, new BigInteger[] {
 112                     dpnId, BigInteger.valueOf(portNo) }));
 113             mkInstructions.add(new InstructionInfo(
 114                     InstructionType.write_metadata, new BigInteger[] {
 115                     MetaDataUtil.getLportTagMetaData(ifIndex),
 116                     MetaDataUtil.METADATA_MASK_LPORT_TAG}));
 117             short tableId = tunnel.getTunnelInterfaceType().isAssignableFrom(TunnelTypeMplsOverGre.class) ? NwConstants.L3_LFIB_TABLE :
 118                     tunnel.isInternal() ? NwConstants.INTERNAL_TUNNEL_TABLE : NwConstants.EXTERNAL_TUNNEL_TABLE;
 119             mkInstructions.add(new InstructionInfo(InstructionType.goto_table, new long[] {tableId}));
 120         }
 121
 122         BigInteger COOKIE_VM_INGRESS_TABLE = new BigInteger("8000001", 16);
 123         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpnId, NwConstants.VLAN_INTERFACE_INGRESS_TABLE, flowRef,
 124                 IfmConstants.DEFAULT_FLOW_PRIORITY, iface.getName(), 0, 0, COOKIE_VM_INGRESS_TABLE, matches, mkInstructions);
 125         if (NwConstants.ADD_FLOW == addOrRemoveFlow) {
 126             futures.add(mdsalApiManager.installFlow(dpnId, flowEntity));
 127         } else {
 128             futures.add(mdsalApiManager.removeFlow(dpnId, flowEntity));
 129         }
 130     }
 131     public static String getTunnelInterfaceFlowRef(BigInteger dpnId, short tableId, String ifName) {
 132         return new StringBuilder().append(dpnId).append(tableId).append(ifName).toString();
 133     }
 134
 135     public static void setOpStateForInterface(DataBroker broker, String interfaceName, org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus opStatus) {
 136         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> interfaceId = IfmUtil.buildStateInterfaceId(interfaceName);
 137         InterfaceBuilder ifaceBuilder = new InterfaceBuilder().setKey(new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.InterfaceKey(interfaceName));
 138         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface interfaceData = ifaceBuilder.setOperStatus(opStatus).build();
 139         MDSALUtil.syncUpdate(broker, LogicalDatastoreType.OPERATIONAL, interfaceId, interfaceData);
 140     }
 141
 142     public static void updateTunnelMonitorDetailsInConfigDS(DataBroker broker, String interfaceName, boolean monitorEnabled, long monitorInterval) {
 143         InstanceIdentifier<Interface> id = IfmUtil.buildId(interfaceName);
 144         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceBuilder ifaceBuilder = new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceBuilder();
 145         ifaceBuilder.setKey(new InterfaceKey(interfaceName));
 146         IfTunnelBuilder ifTunnelBuilder = new IfTunnelBuilder();
 147         ifTunnelBuilder.setMonitorEnabled(monitorEnabled);
 148         ifTunnelBuilder.setMonitorInterval(monitorInterval);
 149         ifaceBuilder.addAugmentation(IfTunnel.class, ifTunnelBuilder.build());
 150
 151         LOG.trace("Updating trunk interface {} in Config DS", interfaceName);
 152         MDSALUtil.syncUpdate(broker, LogicalDatastoreType.OPERATIONAL, id, ifaceBuilder.build());
 153     }
 154
 155     public static void createInterfaceChildEntry( WriteTransaction t,
 156                                                   String parentInterface, String childInterface){
 157         InterfaceParentEntryKey interfaceParentEntryKey = new InterfaceParentEntryKey(parentInterface);
 158         InterfaceChildEntryKey interfaceChildEntryKey = new InterfaceChildEntryKey(childInterface);
 159         InstanceIdentifier<InterfaceChildEntry> intfId =
 160                 InterfaceMetaUtils.getInterfaceChildEntryIdentifier(interfaceParentEntryKey, interfaceChildEntryKey);
 161         InterfaceChildEntryBuilder entryBuilder = new InterfaceChildEntryBuilder().setKey(interfaceChildEntryKey)
 162                 .setChildInterface(childInterface);
 163         t.put(LogicalDatastoreType.CONFIGURATION, intfId, entryBuilder.build(),true);
 164     }
 165
 166     public static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus
 167            updateStateEntry(Interface interfaceNew, DataBroker dataBroker, WriteTransaction transaction,
 168                           org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifState) {
 169         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus operStatus;
 170         if (!interfaceNew.isEnabled()) {
 171             operStatus = org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus.Down;
 172         } else {
 173             String ncStr = ifState.getLowerLayerIf().get(0);
 174             NodeConnectorId nodeConnectorId = new NodeConnectorId(ncStr);
 175             NodeConnector nodeConnector =
 176                     InterfaceManagerCommonUtils.getNodeConnectorFromInventoryOperDS(nodeConnectorId, dataBroker);
 177             FlowCapableNodeConnector flowCapableNodeConnector =
 178                     nodeConnector.getAugmentation(FlowCapableNodeConnector.class);
 179             //State state = flowCapableNodeConnector.getState();
 180             operStatus = flowCapableNodeConnector == null ? org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus.Down : org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus.Up;
 181         }
 182
 183         String ifName = interfaceNew.getName();
 184         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> ifStateId =
 185                 IfmUtil.buildStateInterfaceId(interfaceNew.getName());
 186         InterfaceBuilder ifaceBuilder = new InterfaceBuilder();
 187         ifaceBuilder.setOperStatus(operStatus);
 188         ifaceBuilder.setKey(IfmUtil.getStateInterfaceKeyFromName(ifName));
 189         transaction.merge(LogicalDatastoreType.OPERATIONAL, ifStateId, ifaceBuilder.build());
 190         return operStatus;
 191     }
 192
 193     public static void updateOperStatus(String interfaceName, org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus operStatus,
 194                                         WriteTransaction transaction) {
 195         LOG.debug("updating operational status for interface {}",interfaceName);
 196         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> ifChildStateId =
 197                 IfmUtil.buildStateInterfaceId(interfaceName);
 198         InterfaceBuilder ifaceBuilderChild = new InterfaceBuilder();
 199         ifaceBuilderChild.setOperStatus(operStatus);
 200         ifaceBuilderChild.setKey(IfmUtil.getStateInterfaceKeyFromName(interfaceName));
 201         transaction.merge(LogicalDatastoreType.OPERATIONAL, ifChildStateId, ifaceBuilderChild.build());
 202     }
 203
 204     public static void addStateEntry(String interfaceName, WriteTransaction transaction, DataBroker dataBroker, IdManagerService idManager,
 205                                      org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifState) {
 206         LOG.debug("adding interface state for {}",interfaceName);
 207         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus operStatus = ifState.getOperStatus();
 208         PhysAddress physAddress = ifState.getPhysAddress();
 209         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.AdminStatus adminStatus = ifState.getAdminStatus();
 210         NodeConnectorId nodeConnectorId = new NodeConnectorId(ifState.getLowerLayerIf().get(0));
 211         InterfaceKey interfaceKey = new InterfaceKey(interfaceName);
 212         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface interfaceInfo =
 213                 InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
 214
 215         if (interfaceInfo != null && !interfaceInfo.isEnabled()) {
 216             operStatus = org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus.Down;
 217         }
 218
 219         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> ifStateId =
 220                 IfmUtil.buildStateInterfaceId(interfaceName);
 221         List<String> childLowerLayerIfList = new ArrayList<>();
 222         childLowerLayerIfList.add(0, nodeConnectorId.getValue());
 223         InterfaceBuilder ifaceBuilder = new InterfaceBuilder().setAdminStatus(adminStatus)
 224                 .setOperStatus(operStatus).setPhysAddress(physAddress).setLowerLayerIf(childLowerLayerIfList);
 225
 226         Integer ifIndex = IfmUtil.allocateId(idManager, IfmConstants.IFM_IDPOOL_NAME, interfaceName);
 227         ifaceBuilder.setIfIndex(ifIndex);
 228
 229         if(interfaceInfo != null){
 230             ifaceBuilder.setType(interfaceInfo.getType());
 231         }
 232         ifaceBuilder.setKey(IfmUtil.getStateInterfaceKeyFromName(interfaceName));
 233         transaction.put(LogicalDatastoreType.OPERATIONAL, ifStateId, ifaceBuilder.build(), true);
 234
 235         // create lportTag Interface Map
 236         InterfaceMetaUtils.createLportTagInterfaceMap(transaction, interfaceName, ifIndex);
 237
 238         // install ingress flow
 239         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
 240         long portNo = Long.valueOf(IfmUtil.getPortNoFromNodeConnectorId(nodeConnectorId));
 241         if(interfaceInfo.isEnabled() && ifState.getOperStatus() == org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus.Up) {
 242             List<MatchInfo> matches = FlowBasedServicesUtils.getMatchInfoForVlanPortAtIngressTable(dpId, portNo, interfaceInfo);
 243             FlowBasedServicesUtils.installVlanFlow(dpId, portNo, interfaceInfo, transaction, matches, ifIndex);
 244         }
 245     }
 246
 247     public static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface
 248                   addStateEntry(Interface interfaceInfo, String portName, WriteTransaction transaction, IdManagerService idManager,
 249                                      PhysAddress physAddress, org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus operStatus,
 250                                      org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.AdminStatus adminStatus,
 251                                      NodeConnectorId nodeConnectorId) {
 252         LOG.debug("adding interface state for {}",portName);
 253         if (interfaceInfo != null && !interfaceInfo.isEnabled()) {
 254             operStatus = org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus.Down;
 255         }
 256         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> ifStateId =
 257                 IfmUtil.buildStateInterfaceId(portName);
 258         List<String> childLowerLayerIfList = new ArrayList<>();
 259         childLowerLayerIfList.add(0, nodeConnectorId.getValue());
 260         InterfaceBuilder ifaceBuilder = new InterfaceBuilder().setAdminStatus(adminStatus)
 261                 .setOperStatus(operStatus).setPhysAddress(physAddress).setLowerLayerIf(childLowerLayerIfList);
 262
 263         Integer ifIndex = IfmUtil.allocateId(idManager, IfmConstants.IFM_IDPOOL_NAME, portName);
 264         ifaceBuilder.setIfIndex(ifIndex);
 265
 266         if(interfaceInfo != null){
 267             ifaceBuilder.setType(interfaceInfo.getType());
 268         }
 269         ifaceBuilder.setKey(IfmUtil.getStateInterfaceKeyFromName(portName));
 270         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface ifState = ifaceBuilder.build();
 271         transaction.put(LogicalDatastoreType.OPERATIONAL, ifStateId,ifState , true);
 272
 273         // allocate lport tag and set in if-index
 274         InterfaceMetaUtils.createLportTagInterfaceMap(transaction, portName, ifIndex);
 275         return ifState;
 276     }
 277
 278     public static void deleteStateEntry(String interfaceName, WriteTransaction transaction) {
 279         LOG.debug("removing interface state for {}",interfaceName);
 280         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> ifChildStateId =
 281                 IfmUtil.buildStateInterfaceId(interfaceName);
 282         transaction.delete(LogicalDatastoreType.OPERATIONAL, ifChildStateId);
 283     }
 284
 285     // For trunk interfaces, binding to a parent interface which is already bound to another trunk interface should not
 286     // be allowed
 287     public static boolean createInterfaceChildEntryIfNotPresent( DataBroker dataBroker, WriteTransaction t,
 288                                                String parentInterface, String childInterface){
 289         InterfaceParentEntryKey interfaceParentEntryKey = new InterfaceParentEntryKey(parentInterface);
 290         InstanceIdentifier<InterfaceParentEntry> interfaceParentEntryIdentifier =
 291                 InterfaceMetaUtils.getInterfaceParentEntryIdentifier(interfaceParentEntryKey);
 292         InterfaceParentEntry interfaceParentEntry =
 293                 InterfaceMetaUtils.getInterfaceParentEntryFromConfigDS(interfaceParentEntryIdentifier, dataBroker);
 294
 295         if(interfaceParentEntry != null){
 296             LOG.error("Trying to bind the same parent interface {} to multiple trunk interfaces. ", parentInterface);
 297             return false;
 298         }
 299
 300         LOG.info("First vlan trunk {} bound on parent-interface {}", childInterface, parentInterface);
 301         InterfaceChildEntryKey interfaceChildEntryKey = new InterfaceChildEntryKey(childInterface);
 302         InstanceIdentifier<InterfaceChildEntry> intfId =
 303                 InterfaceMetaUtils.getInterfaceChildEntryIdentifier(interfaceParentEntryKey, interfaceChildEntryKey);
 304         InterfaceChildEntryBuilder entryBuilder = new InterfaceChildEntryBuilder().setKey(interfaceChildEntryKey)
 305                 .setChildInterface(childInterface);
 306         t.put(LogicalDatastoreType.CONFIGURATION, intfId, entryBuilder.build(),true);
 307         return true;
 308     }
 309
 310     public static boolean deleteParentInterfaceEntry( WriteTransaction t, String parentInterface){
 311         InterfaceParentEntryKey interfaceParentEntryKey = new InterfaceParentEntryKey(parentInterface);
 312         InstanceIdentifier<InterfaceParentEntry> interfaceParentEntryIdentifier = InterfaceMetaUtils.getInterfaceParentEntryIdentifier(interfaceParentEntryKey);
 313         t.delete(LogicalDatastoreType.CONFIGURATION, interfaceParentEntryIdentifier);
 314         return true;
 315     }
 316
 317 }