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

   1 /*
   2  * Copyright (c) 2015, 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.vpnservice.itm.confighelpers;
   9
  10 import java.math.BigInteger;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import java.util.concurrent.Callable;
  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.itm.impl.ItmUtils;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.IdManagerService;
  21 import org.opendaylight.vpnservice.mdsalutil.interfaces.IMdsalApiManager;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.TunnelTypeBase;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.DpnEndpoints;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.TunnelList;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.DPNTEPsInfo;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.dpn.teps.info.TunnelEndPoints;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.tunnel.list.InternalTunnel;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.tunnel.list.InternalTunnelKey;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 import com.google.common.base.Optional;
  34 import com.google.common.util.concurrent.ListenableFuture;
  35
  36 public class ItmInternalTunnelDeleteWorker {
  37    private static final Logger logger = LoggerFactory.getLogger(ItmInternalTunnelDeleteWorker.class) ;
  38
  39     public static List<ListenableFuture<Void>> deleteTunnels(DataBroker dataBroker, IdManagerService idManagerService,IMdsalApiManager mdsalManager,
  40                                                              List<DPNTEPsInfo> dpnTepsList, List<DPNTEPsInfo> meshedDpnList)
  41     {
  42         logger.trace( "TEPs to be deleted {} " , dpnTepsList );
  43         List<ListenableFuture<Void>> futures = new ArrayList<>();
  44         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  45         try {
  46             if (dpnTepsList == null || dpnTepsList.size() == 0) {
  47                 logger.debug("no vtep to delete");
  48                 return futures ;
  49             }
  50
  51             if (meshedDpnList == null || meshedDpnList.size() == 0) {
  52                 logger.debug("No Meshed Vteps");
  53                 return futures ;
  54             }
  55             for (DPNTEPsInfo srcDpn : dpnTepsList) {
  56                 logger.trace("Processing srcDpn " + srcDpn);
  57                 List<TunnelEndPoints> meshedEndPtCache = new ArrayList<TunnelEndPoints>(ItmUtils.getTEPsForDpn(srcDpn.getDPNID(), meshedDpnList)) ;
  58                 if(meshedEndPtCache == null ) {
  59                     logger.debug("No Tunnel End Point configured for this DPN {}", srcDpn.getDPNID());
  60                     continue ;
  61                 }
  62                 logger.debug( "Entries in meshEndPointCache {} ", meshedEndPtCache.size() );
  63                 for (TunnelEndPoints srcTep : srcDpn.getTunnelEndPoints()) {
  64                     logger.trace("Processing srcTep " + srcTep);
  65                     String srcTZone = srcTep.getTransportZone();
  66
  67                     // run through all other DPNS other than srcDpn
  68                     for (DPNTEPsInfo dstDpn : meshedDpnList) {
  69                         if (!(srcDpn.getDPNID().equals(dstDpn.getDPNID()))) {
  70                             for (TunnelEndPoints dstTep : dstDpn.getTunnelEndPoints()) {
  71                                 logger.trace("Processing dstTep " + dstTep);
  72                                 if (dstTep.getTransportZone().equals(srcTZone)) {
  73                                     if( checkIfTrunkExists(dstDpn.getDPNID(), srcDpn.getDPNID(), srcTep.getTunnelType(),dataBroker)) {
  74                                     // remove all trunk interfaces
  75                                     logger.trace("Invoking removeTrunkInterface between source TEP {} , Destination TEP {} " ,srcTep , dstTep);
  76                                     removeTrunkInterface(dataBroker, idManagerService, srcTep, dstTep, srcDpn.getDPNID(), dstDpn.getDPNID(), t, futures);
  77                                     }
  78                                 }
  79                             }
  80                         }
  81                     }
  82
  83                     // removing vtep / dpn from Tunnels OpDs.
  84                     InstanceIdentifier<TunnelEndPoints> tepPath =
  85                                     InstanceIdentifier.builder(DpnEndpoints.class).child(DPNTEPsInfo.class, srcDpn.getKey())
  86                                                     .child(TunnelEndPoints.class, srcTep.getKey()).build();
  87
  88                     logger.trace("Tep Removal of TEP {} from DPNTEPSINFO CONFIG DS with Key {} " + srcTep, srcTep.getKey());
  89                     t.delete(LogicalDatastoreType.CONFIGURATION, tepPath);
  90                     // remove the tep from the cache
  91                     meshedEndPtCache.remove(srcTep) ;
  92
  93                     InstanceIdentifier<DPNTEPsInfo> dpnPath =
  94                                     InstanceIdentifier.builder(DpnEndpoints.class).child(DPNTEPsInfo.class, srcDpn.getKey())
  95                                                     .build();
  96                     /*
  97                     Optional<DPNTEPsInfo> dpnOptional =
  98                                     ItmUtils.read(LogicalDatastoreType.CONFIGURATION, dpnPath, dataBroker);
  99                     if (dpnOptional.isPresent()) {
 100                     */
 101                     if( meshedEndPtCache.isEmpty()) {
 102                         //DPNTEPsInfo dpnRead = dpnOptional.get();
 103                         // remove dpn if no vteps exist on dpn
 104                       //  if (dpnRead.getTunnelEndPoints() == null || dpnRead.getTunnelEndPoints().size() == 0) {
 105                             logger.debug( "Removing Terminating Service Table Flow ") ;
 106                            ItmUtils.setUpOrRemoveTerminatingServiceTable(srcDpn.getDPNID(), mdsalManager,false);
 107                             logger.trace("DPN Removal from DPNTEPSINFO CONFIG DS " + srcDpn.getDPNID());
 108                             t.delete(LogicalDatastoreType.CONFIGURATION, dpnPath);
 109                             InstanceIdentifier<DpnEndpoints> tnlContainerPath =
 110                                             InstanceIdentifier.builder(DpnEndpoints.class).build();
 111                             Optional<DpnEndpoints> containerOptional =
 112                                             ItmUtils.read(LogicalDatastoreType.CONFIGURATION,
 113                                                             tnlContainerPath, dataBroker);
 114                             // remove container if no DPNs are present
 115                             if (containerOptional.isPresent()) {
 116                                DpnEndpoints deps = containerOptional.get();
 117                                 if (deps.getDPNTEPsInfo() == null || deps.getDPNTEPsInfo().isEmpty()) {
 118                                     logger.trace("Container Removal from DPNTEPSINFO CONFIG DS");
 119                                     t.delete(LogicalDatastoreType.CONFIGURATION, tnlContainerPath);
 120                                 }
 121                             }
 122                         //}
 123                     }
 124                 }
 125             }
 126             futures.add( t.submit() );
 127         } catch (Exception e1) {
 128             logger.error("exception while deleting tep", e1);
 129         }
 130         return futures ;
 131     }
 132
 133     private static void removeTrunkInterface(DataBroker dataBroker, IdManagerService idManagerService,
 134                                              TunnelEndPoints srcTep, TunnelEndPoints dstTep, BigInteger srcDpnId, BigInteger dstDpnId,
 135                                              WriteTransaction t, List<ListenableFuture<Void>> futures) {
 136         String trunkfwdIfName =
 137                         ItmUtils.getTrunkInterfaceName( idManagerService, srcTep.getInterfaceName(),
 138                                                         srcTep.getIpAddress().getIpv4Address().getValue(),
 139                                                         dstTep.getIpAddress().getIpv4Address().getValue(),
 140                                                         srcTep.getTunnelType().getName());
 141         logger.trace("Removing forward Trunk Interface " + trunkfwdIfName);
 142         InstanceIdentifier<Interface> trunkIdentifier = ItmUtils.buildId(trunkfwdIfName);
 143         logger.debug(  " Removing Trunk Interface Name - {} , Id - {} from Config DS ", trunkfwdIfName, trunkIdentifier ) ;
 144         t.delete(LogicalDatastoreType.CONFIGURATION, trunkIdentifier);
 145         ItmUtils.itmCache.removeInterface(trunkfwdIfName);
 146         // also update itm-state ds -- Delete the forward tunnel-interface from the tunnel list
 147         InstanceIdentifier<InternalTunnel> path = InstanceIdentifier.create(
 148                 TunnelList.class)
 149                     .child(InternalTunnel.class, new InternalTunnelKey( dstDpnId, srcDpnId, srcTep.getTunnelType()));
 150         t.delete(LogicalDatastoreType.CONFIGURATION,path) ;
 151         ItmUtils.itmCache.removeInternalTunnel(trunkfwdIfName);
 152         // Release the Ids for the forward trunk interface Name
 153         ItmUtils.releaseIdForTrunkInterfaceName(idManagerService,srcTep.getInterfaceName(), srcTep.getIpAddress()
 154                 .getIpv4Address().getValue(), dstTep.getIpAddress().getIpv4Address()
 155                 .getValue(), srcTep.getTunnelType().getName() );
 156
 157         String trunkRevIfName =
 158                         ItmUtils.getTrunkInterfaceName( idManagerService, dstTep.getInterfaceName(),
 159                                                         dstTep.getIpAddress().getIpv4Address().getValue(),
 160                                                         srcTep.getIpAddress().getIpv4Address().getValue(),
 161                                                         srcTep.getTunnelType().getName());
 162         logger.trace("Removing Reverse Trunk Interface " + trunkRevIfName);
 163         trunkIdentifier = ItmUtils.buildId(trunkRevIfName);
 164         logger.debug(  " Removing Trunk Interface Name - {} , Id - {} from Config DS ", trunkRevIfName, trunkIdentifier ) ;
 165         t.delete(LogicalDatastoreType.CONFIGURATION, trunkIdentifier);
 166
 167      // also update itm-state ds -- Delete the reverse tunnel-interface from the tunnel list
 168         path = InstanceIdentifier.create(
 169                 TunnelList.class)
 170                     .child(InternalTunnel.class, new InternalTunnelKey(dstDpnId, srcDpnId, srcTep.getTunnelType()));
 171         t.delete(LogicalDatastoreType.CONFIGURATION,path) ;
 172
 173      // Release the Ids for the reverse trunk interface Name
 174         ItmUtils.releaseIdForTrunkInterfaceName(idManagerService, dstTep.getInterfaceName(), dstTep.getIpAddress()
 175                 .getIpv4Address().getValue(), srcTep.getIpAddress().getIpv4Address()
 176                 .getValue(),dstTep.getTunnelType().getName());
 177     }
 178     private static boolean checkIfTrunkExists(BigInteger srcDpnId, BigInteger dstDpnId, Class<? extends TunnelTypeBase> tunType, DataBroker dataBroker) {
 179         boolean existsFlag = false ;
 180         InstanceIdentifier<InternalTunnel> path = InstanceIdentifier.create(
 181                 TunnelList.class)
 182                     .child(InternalTunnel.class, new InternalTunnelKey( dstDpnId, srcDpnId, tunType));
 183         Optional<InternalTunnel> internalTunnels = ItmUtils.read(LogicalDatastoreType.CONFIGURATION,path, dataBroker) ;
 184         if( internalTunnels.isPresent())
 185             existsFlag = true ;
 186            return existsFlag ;
 187     }
 188 }