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