itm/itm-impl/src/main/java/org/opendaylight/genius/itm/confighelpers/ItmInternalTunnelDeleteWorker.java

   1 /*
   2  * Copyright (c) 2016 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 package org.opendaylight.genius.itm.confighelpers;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.util.concurrent.ListenableFuture;
  12 import java.math.BigInteger;
  13 import java.util.ArrayList;
  14 import java.util.List;
  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.genius.itm.impl.ItmUtils;
  19 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelMonitoringTypeBase;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelMonitoringTypeLldp;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelTypeBase;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.DpnEndpoints;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.TunnelList;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.DPNTEPsInfo;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.dpn.teps.info.TunnelEndPoints;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.dpn.teps.info.TunnelEndPointsBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.dpn.teps.info.tunnel.end.points.TzMembership;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.tunnel.list.InternalTunnel;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.tunnel.list.InternalTunnelKey;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 public class ItmInternalTunnelDeleteWorker {
  38     private static final Logger logger = LoggerFactory.getLogger(ItmInternalTunnelDeleteWorker.class) ;
  39
  40     public static List<ListenableFuture<Void>> deleteTunnels(DataBroker dataBroker, IdManagerService idManagerService,IMdsalApiManager mdsalManager,
  41                                                              List<DPNTEPsInfo> dpnTepsList, List<DPNTEPsInfo> meshedDpnList)
  42     {
  43         logger.trace( "TEPs to be deleted {} " , dpnTepsList );
  44         List<ListenableFuture<Void>> futures = new ArrayList<>();
  45         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  46         try {
  47             if (dpnTepsList == null || dpnTepsList.size() == 0) {
  48                 logger.debug("no vtep to delete");
  49                 return futures ;
  50             }
  51
  52             if (meshedDpnList == null || meshedDpnList.size() == 0) {
  53                 logger.debug("No Meshed Vteps");
  54                 return futures ;
  55             }
  56             for (DPNTEPsInfo srcDpn : dpnTepsList) {
  57                 logger.trace("Processing srcDpn " + srcDpn);
  58
  59                 List<TunnelEndPoints> meshedEndPtCache = ItmUtils.getTEPsForDpn(srcDpn.getDPNID(), meshedDpnList);
  60                 if (meshedEndPtCache == null) {
  61                     logger.debug("No Tunnel End Point configured for this DPN {}", srcDpn.getDPNID());
  62                     continue ;
  63                 }
  64                 logger.debug( "Entries in meshEndPointCache {} for DPN Id{} ", meshedEndPtCache.size(), srcDpn.getDPNID() );
  65                 for (TunnelEndPoints srcTep : srcDpn.getTunnelEndPoints()) {
  66                     logger.trace("Processing srcTep " + srcTep);
  67                     List<TzMembership> srcTZones = srcTep.getTzMembership();
  68                     boolean tepDeleteFlag = false;
  69                     // First, take care of tunnel removal, so run through all other DPNS other than srcDpn
  70                     // In the tep received from Delete DCN, the membership list will always be 1 as the DCN is at transport zone level
  71                     // Hence if a tunnel is shared across TZs, compare the original membership list between end points to decide if tunnel to be deleted.
  72                     for (DPNTEPsInfo dstDpn : meshedDpnList) {
  73                         if (!srcDpn.getDPNID().equals(dstDpn.getDPNID())) {
  74                             for (TunnelEndPoints dstTep : dstDpn.getTunnelEndPoints()) {
  75                                 if (!ItmUtils.getIntersection(dstTep.getTzMembership(), srcTZones).isEmpty()) {
  76                                     List<TzMembership> originalTzMembership = ItmUtils.getOriginalTzMembership(srcTep, srcDpn.getDPNID(), meshedDpnList);
  77                                     if (ItmUtils.getIntersection(dstTep.getTzMembership(), originalTzMembership).size() == 1) {
  78                                         if (checkIfTrunkExists(dstDpn.getDPNID(), srcDpn.getDPNID(), srcTep.getTunnelType(), dataBroker)) {
  79                                             // remove all trunk interfaces
  80                                             logger.trace("Invoking removeTrunkInterface between source TEP {} , Destination TEP {} ", srcTep, dstTep);
  81                                             removeTrunkInterface(dataBroker, idManagerService, srcTep, dstTep, srcDpn.getDPNID(), dstDpn.getDPNID(), t, futures);
  82                                         }
  83                                     }
  84                                 }
  85                             }
  86                         }
  87                     }
  88                     for (DPNTEPsInfo dstDpn : meshedDpnList) {
  89                         // Second, take care of Tep TZ membership and identify if tep can be removed
  90                         if (srcDpn.getDPNID().equals(dstDpn.getDPNID())){
  91                             // Same DPN, so remove the TZ membership
  92                             for (TunnelEndPoints dstTep : dstDpn.getTunnelEndPoints()) {
  93                                 if (dstTep.getIpAddress().equals(srcTep.getIpAddress())) {
  94                                     // Remove the deleted TZ membership from the TEP
  95                                     logger.debug("Removing TZ list {} from Existing TZ list {} ", srcTZones, dstTep.getTzMembership());
  96                                     List<TzMembership> updatedList = ItmUtils.removeTransportZoneMembership(dstTep, srcTZones);
  97                                     if (updatedList.isEmpty()) {
  98                                         logger.debug(" This TEP can be deleted " + srcTep);
  99                                         tepDeleteFlag = true;
 100                                     }else {
 101                                         TunnelEndPointsBuilder modifiedTepBld = new TunnelEndPointsBuilder(dstTep);
 102                                         modifiedTepBld.setTzMembership(updatedList);
 103                                         TunnelEndPoints modifiedTep = modifiedTepBld.build() ;
 104                                         InstanceIdentifier<TunnelEndPoints> tepPath =
 105                                                 InstanceIdentifier.builder(DpnEndpoints.class).child(DPNTEPsInfo.class, dstDpn.getKey())
 106                                                         .child(TunnelEndPoints.class, dstTep.getKey()).build();
 107
 108                                         logger.debug(" Store the modified Tep in DS {} ", modifiedTep);
 109                                         t.put(LogicalDatastoreType.CONFIGURATION, tepPath, modifiedTep);
 110                                     }
 111                                 }
 112                             }
 113                         }
 114                     }
 115                     if (tepDeleteFlag) {
 116                         // Third, removing vtep / dpn from Tunnels OpDs.
 117                         InstanceIdentifier<TunnelEndPoints> tepPath =
 118                                 InstanceIdentifier.builder(DpnEndpoints.class).child(DPNTEPsInfo.class, srcDpn.getKey())
 119                                         .child(TunnelEndPoints.class, srcTep.getKey()).build();
 120
 121                         logger.trace("Tep Removal of TEP {} from DPNTEPSINFO CONFIG DS with Key {} " + srcTep, srcTep.getKey());
 122                         t.delete(LogicalDatastoreType.CONFIGURATION, tepPath);
 123                         // remove the tep from the cache
 124                         meshedEndPtCache.remove(srcTep);
 125                         Class<? extends TunnelMonitoringTypeBase> monitorProtocol = ItmUtils.determineMonitorProtocol(dataBroker);
 126                         InstanceIdentifier<DPNTEPsInfo> dpnPath =
 127                                 InstanceIdentifier.builder(DpnEndpoints.class).child(DPNTEPsInfo.class, srcDpn.getKey())
 128                                         .build();
 129
 130                         if (meshedEndPtCache.isEmpty()) {
 131                             // remove dpn if no vteps exist on dpn
 132                             if (monitorProtocol.isAssignableFrom(TunnelMonitoringTypeLldp.class)) {
 133                                 logger.debug("Removing Terminating Service Table Flow ");
 134                                 ItmUtils.setUpOrRemoveTerminatingServiceTable(srcDpn.getDPNID(), mdsalManager, false);
 135                             }
 136                             logger.trace("DPN Removal from DPNTEPSINFO CONFIG DS " + srcDpn.getDPNID());
 137                             t.delete(LogicalDatastoreType.CONFIGURATION, dpnPath);
 138                             InstanceIdentifier<DpnEndpoints> tnlContainerPath =
 139                                     InstanceIdentifier.builder(DpnEndpoints.class).build();
 140                             Optional<DpnEndpoints> containerOptional =
 141                                     ItmUtils.read(LogicalDatastoreType.CONFIGURATION,
 142                                             tnlContainerPath, dataBroker);
 143                             // remove container if no DPNs are present
 144                             if (containerOptional.isPresent()) {
 145                                 DpnEndpoints deps = containerOptional.get();
 146                                 if (deps.getDPNTEPsInfo() == null || deps.getDPNTEPsInfo().isEmpty()) {
 147                                     logger.trace("Container Removal from DPNTEPSINFO CONFIG DS");
 148                                     t.delete(LogicalDatastoreType.CONFIGURATION, tnlContainerPath);
 149                                 }
 150                             }
 151                         }
 152                     }
 153                 }
 154             }
 155             futures.add( t.submit() );
 156         } catch (Exception e1) {
 157             logger.error("exception while deleting tep", e1);
 158         }
 159         return futures ;
 160     }
 161
 162     private static void removeTrunkInterface(DataBroker dataBroker, IdManagerService idManagerService,
 163                                              TunnelEndPoints srcTep, TunnelEndPoints dstTep, BigInteger srcDpnId, BigInteger dstDpnId,
 164                                              WriteTransaction t, List<ListenableFuture<Void>> futures) {
 165         String trunkfwdIfName =
 166                 ItmUtils.getTrunkInterfaceName( idManagerService, srcTep.getInterfaceName(),
 167                         srcTep.getIpAddress().getIpv4Address().getValue(),
 168                         dstTep.getIpAddress().getIpv4Address().getValue(),
 169                         srcTep.getTunnelType().getName());
 170         logger.trace("Removing forward Trunk Interface " + trunkfwdIfName);
 171         InstanceIdentifier<Interface> trunkIdentifier = ItmUtils.buildId(trunkfwdIfName);
 172         logger.debug(  " Removing Trunk Interface Name - {} , Id - {} from Config DS ", trunkfwdIfName, trunkIdentifier ) ;
 173         t.delete(LogicalDatastoreType.CONFIGURATION, trunkIdentifier);
 174         ItmUtils.itmCache.removeInterface(trunkfwdIfName);
 175         // also update itm-state ds -- Delete the forward tunnel-interface from the tunnel list
 176         InstanceIdentifier<InternalTunnel> path = InstanceIdentifier.create(
 177                 TunnelList.class)
 178                 .child(InternalTunnel.class, new InternalTunnelKey( dstDpnId, srcDpnId, srcTep.getTunnelType()));
 179         t.delete(LogicalDatastoreType.CONFIGURATION,path) ;
 180         ItmUtils.itmCache.removeInternalTunnel(trunkfwdIfName);
 181         // Release the Ids for the forward trunk interface Name
 182         ItmUtils.releaseIdForTrunkInterfaceName(idManagerService,srcTep.getInterfaceName(), srcTep.getIpAddress()
 183                 .getIpv4Address().getValue(), dstTep.getIpAddress().getIpv4Address()
 184                 .getValue(), srcTep.getTunnelType().getName() );
 185
 186         String trunkRevIfName =
 187                 ItmUtils.getTrunkInterfaceName( idManagerService, dstTep.getInterfaceName(),
 188                         dstTep.getIpAddress().getIpv4Address().getValue(),
 189                         srcTep.getIpAddress().getIpv4Address().getValue(),
 190                         srcTep.getTunnelType().getName());
 191         logger.trace("Removing Reverse Trunk Interface " + trunkRevIfName);
 192         trunkIdentifier = ItmUtils.buildId(trunkRevIfName);
 193         logger.debug(  " Removing Trunk Interface Name - {} , Id - {} from Config DS ", trunkRevIfName, trunkIdentifier ) ;
 194         t.delete(LogicalDatastoreType.CONFIGURATION, trunkIdentifier);
 195
 196         // also update itm-state ds -- Delete the reverse tunnel-interface from the tunnel list
 197         path = InstanceIdentifier.create(
 198                 TunnelList.class)
 199                 .child(InternalTunnel.class, new InternalTunnelKey(srcDpnId, dstDpnId, dstTep.getTunnelType()));
 200         t.delete(LogicalDatastoreType.CONFIGURATION,path) ;
 201
 202         // Release the Ids for the reverse trunk interface Name
 203         ItmUtils.releaseIdForTrunkInterfaceName(idManagerService, dstTep.getInterfaceName(), dstTep.getIpAddress()
 204                 .getIpv4Address().getValue(), srcTep.getIpAddress().getIpv4Address()
 205                 .getValue(),dstTep.getTunnelType().getName());
 206     }
 207     private static boolean checkIfTrunkExists(BigInteger srcDpnId, BigInteger dstDpnId, Class<? extends TunnelTypeBase> tunType, DataBroker dataBroker) {
 208         InstanceIdentifier<InternalTunnel> path = InstanceIdentifier.create(
 209                 TunnelList.class)
 210                 .child(InternalTunnel.class, new InternalTunnelKey( dstDpnId, srcDpnId, tunType));
 211         return ItmUtils.read(LogicalDatastoreType.CONFIGURATION,path, dataBroker).isPresent();
 212     }
 213 }