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 org.opendaylight.controller.md.sal.binding.api.DataBroker;
  13 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  15 import org.opendaylight.genius.itm.impl.ItmUtils;
  16 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelTypeBase;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.DpnEndpoints;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.TunnelList;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.DPNTEPsInfo;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.dpn.teps.info.TunnelEndPoints;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.tunnel.list.InternalTunnel;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.tunnel.list.InternalTunnelKey;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 import java.math.BigInteger;
  31 import java.util.ArrayList;
  32 import java.util.List;
  33
  34 public class ItmInternalTunnelDeleteWorker {
  35     private static final Logger logger = LoggerFactory.getLogger(ItmInternalTunnelDeleteWorker.class) ;
  36
  37     public static List<ListenableFuture<Void>> deleteTunnels(DataBroker dataBroker, IdManagerService idManagerService,IMdsalApiManager mdsalManager,
  38                                                              List<DPNTEPsInfo> dpnTepsList, List<DPNTEPsInfo> meshedDpnList)
  39     {
  40         logger.trace( "TEPs to be deleted {} " , dpnTepsList );
  41         List<ListenableFuture<Void>> futures = new ArrayList<>();
  42         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  43         try {
  44             if (dpnTepsList == null || dpnTepsList.size() == 0) {
  45                 logger.debug("no vtep to delete");
  46                 return futures ;
  47             }
  48
  49             if (meshedDpnList == null || meshedDpnList.size() == 0) {
  50                 logger.debug("No Meshed Vteps");
  51                 return futures ;
  52             }
  53             for (DPNTEPsInfo srcDpn : dpnTepsList) {
  54                 logger.trace("Processing srcDpn " + srcDpn);
  55                 List<TunnelEndPoints> meshedEndPtCache = new ArrayList<TunnelEndPoints>(ItmUtils.getTEPsForDpn(srcDpn.getDPNID(), meshedDpnList)) ;
  56                 if(meshedEndPtCache == null ) {
  57                     logger.debug("No Tunnel End Point configured for this DPN {}", srcDpn.getDPNID());
  58                     continue ;
  59                 }
  60                 logger.debug( "Entries in meshEndPointCache {} ", meshedEndPtCache.size() );
  61                 for (TunnelEndPoints srcTep : srcDpn.getTunnelEndPoints()) {
  62                     logger.trace("Processing srcTep " + srcTep);
  63                     String srcTZone = srcTep.getTransportZone();
  64
  65                     // run through all other DPNS other than srcDpn
  66                     for (DPNTEPsInfo dstDpn : meshedDpnList) {
  67                         if (!(srcDpn.getDPNID().equals(dstDpn.getDPNID()))) {
  68                             for (TunnelEndPoints dstTep : dstDpn.getTunnelEndPoints()) {
  69                                 logger.trace("Processing dstTep " + dstTep);
  70                                 if (dstTep.getTransportZone().equals(srcTZone)) {
  71                                     if( checkIfTrunkExists(dstDpn.getDPNID(), srcDpn.getDPNID(), srcTep.getTunnelType(),dataBroker)) {
  72                                         // remove all trunk interfaces
  73                                         logger.trace("Invoking removeTrunkInterface between source TEP {} , Destination TEP {} " ,srcTep , dstTep);
  74                                         removeTrunkInterface(dataBroker, idManagerService, srcTep, dstTep, srcDpn.getDPNID(), dstDpn.getDPNID(), t, futures);
  75                                     }
  76                                 }
  77                             }
  78                         }
  79                     }
  80
  81                     // removing vtep / dpn from Tunnels OpDs.
  82                     InstanceIdentifier<TunnelEndPoints> tepPath =
  83                             InstanceIdentifier.builder(DpnEndpoints.class).child(DPNTEPsInfo.class, srcDpn.getKey())
  84                                     .child(TunnelEndPoints.class, srcTep.getKey()).build();
  85
  86                     logger.trace("Tep Removal of TEP {} from DPNTEPSINFO CONFIG DS with Key {} " + srcTep, srcTep.getKey());
  87                     t.delete(LogicalDatastoreType.CONFIGURATION, tepPath);
  88                     // remove the tep from the cache
  89                     meshedEndPtCache.remove(srcTep) ;
  90
  91                     InstanceIdentifier<DPNTEPsInfo> dpnPath =
  92                             InstanceIdentifier.builder(DpnEndpoints.class).child(DPNTEPsInfo.class, srcDpn.getKey())
  93                                     .build();
  94                     /*
  95                     Optional<DPNTEPsInfo> dpnOptional =
  96                                     ItmUtils.read(LogicalDatastoreType.CONFIGURATION, dpnPath, dataBroker);
  97                     if (dpnOptional.isPresent()) {
  98                     */
  99                     if( meshedEndPtCache.isEmpty()) {
 100                         //DPNTEPsInfo dpnRead = dpnOptional.get();
 101                         // remove dpn if no vteps exist on dpn
 102                         //  if (dpnRead.getTunnelEndPoints() == null || dpnRead.getTunnelEndPoints().size() == 0) {
 103                         logger.debug( "Removing Terminating Service Table Flow ") ;
 104                         ItmUtils.setUpOrRemoveTerminatingServiceTable(srcDpn.getDPNID(), mdsalManager,false);
 105                         logger.trace("DPN Removal from DPNTEPSINFO CONFIG DS " + srcDpn.getDPNID());
 106                         t.delete(LogicalDatastoreType.CONFIGURATION, dpnPath);
 107                         InstanceIdentifier<DpnEndpoints> tnlContainerPath =
 108                                 InstanceIdentifier.builder(DpnEndpoints.class).build();
 109                         Optional<DpnEndpoints> containerOptional =
 110                                 ItmUtils.read(LogicalDatastoreType.CONFIGURATION,
 111                                         tnlContainerPath, dataBroker);
 112                         // remove container if no DPNs are present
 113                         if (containerOptional.isPresent()) {
 114                             DpnEndpoints deps = containerOptional.get();
 115                             if (deps.getDPNTEPsInfo() == null || deps.getDPNTEPsInfo().isEmpty()) {
 116                                 logger.trace("Container Removal from DPNTEPSINFO CONFIG DS");
 117                                 t.delete(LogicalDatastoreType.CONFIGURATION, tnlContainerPath);
 118                             }
 119                         }
 120                         //}
 121                     }
 122                 }
 123             }
 124             futures.add( t.submit() );
 125         } catch (Exception e1) {
 126             logger.error("exception while deleting tep", e1);
 127         }
 128         return futures ;
 129     }
 130
 131     private static void removeTrunkInterface(DataBroker dataBroker, IdManagerService idManagerService,
 132                                              TunnelEndPoints srcTep, TunnelEndPoints dstTep, BigInteger srcDpnId, BigInteger dstDpnId,
 133                                              WriteTransaction t, List<ListenableFuture<Void>> futures) {
 134         String trunkfwdIfName =
 135                 ItmUtils.getTrunkInterfaceName( idManagerService, srcTep.getInterfaceName(),
 136                         srcTep.getIpAddress().getIpv4Address().getValue(),
 137                         dstTep.getIpAddress().getIpv4Address().getValue(),
 138                         srcTep.getTunnelType().getName());
 139         logger.trace("Removing forward Trunk Interface " + trunkfwdIfName);
 140         InstanceIdentifier<Interface> trunkIdentifier = ItmUtils.buildId(trunkfwdIfName);
 141         logger.debug(  " Removing Trunk Interface Name - {} , Id - {} from Config DS ", trunkfwdIfName, trunkIdentifier ) ;
 142         t.delete(LogicalDatastoreType.CONFIGURATION, trunkIdentifier);
 143         ItmUtils.itmCache.removeInterface(trunkfwdIfName);
 144         // also update itm-state ds -- Delete the forward tunnel-interface from the tunnel list
 145         InstanceIdentifier<InternalTunnel> path = InstanceIdentifier.create(
 146                 TunnelList.class)
 147                 .child(InternalTunnel.class, new InternalTunnelKey( dstDpnId, srcDpnId, srcTep.getTunnelType()));
 148         t.delete(LogicalDatastoreType.CONFIGURATION,path) ;
 149         ItmUtils.itmCache.removeInternalTunnel(trunkfwdIfName);
 150         // Release the Ids for the forward trunk interface Name
 151         ItmUtils.releaseIdForTrunkInterfaceName(idManagerService,srcTep.getInterfaceName(), srcTep.getIpAddress()
 152                 .getIpv4Address().getValue(), dstTep.getIpAddress().getIpv4Address()
 153                 .getValue(), srcTep.getTunnelType().getName() );
 154
 155         String trunkRevIfName =
 156                 ItmUtils.getTrunkInterfaceName( idManagerService, dstTep.getInterfaceName(),
 157                         dstTep.getIpAddress().getIpv4Address().getValue(),
 158                         srcTep.getIpAddress().getIpv4Address().getValue(),
 159                         srcTep.getTunnelType().getName());
 160         logger.trace("Removing Reverse Trunk Interface " + trunkRevIfName);
 161         trunkIdentifier = ItmUtils.buildId(trunkRevIfName);
 162         logger.debug(  " Removing Trunk Interface Name - {} , Id - {} from Config DS ", trunkRevIfName, trunkIdentifier ) ;
 163         t.delete(LogicalDatastoreType.CONFIGURATION, trunkIdentifier);
 164
 165         // also update itm-state ds -- Delete the reverse tunnel-interface from the tunnel list
 166         path = InstanceIdentifier.create(
 167                 TunnelList.class)
 168                 .child(InternalTunnel.class, new InternalTunnelKey(dstDpnId, srcDpnId, srcTep.getTunnelType()));
 169         t.delete(LogicalDatastoreType.CONFIGURATION,path) ;
 170
 171         // Release the Ids for the reverse trunk interface Name
 172         ItmUtils.releaseIdForTrunkInterfaceName(idManagerService, dstTep.getInterfaceName(), dstTep.getIpAddress()
 173                 .getIpv4Address().getValue(), srcTep.getIpAddress().getIpv4Address()
 174                 .getValue(),dstTep.getTunnelType().getName());
 175     }
 176     private static boolean checkIfTrunkExists(BigInteger srcDpnId, BigInteger dstDpnId, Class<? extends TunnelTypeBase> tunType, DataBroker dataBroker) {
 177         boolean existsFlag = false ;
 178         InstanceIdentifier<InternalTunnel> path = InstanceIdentifier.create(
 179                 TunnelList.class)
 180                 .child(InternalTunnel.class, new InternalTunnelKey( dstDpnId, srcDpnId, tunType));
 181         Optional<InternalTunnel> internalTunnels = ItmUtils.read(LogicalDatastoreType.CONFIGURATION,path, dataBroker) ;
 182         if( internalTunnels.isPresent())
 183             existsFlag = true ;
 184         return existsFlag ;
 185     }
 186 }