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