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