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.params.xml.ns.yang.itm.op.rev150701.Tunnels;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.itm.op.rev150701.tunnels.DPNTEPsInfo;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.itm.op.rev150701.tunnels.dpn.teps.info.TunnelEndPoints;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 import com.google.common.base.Optional;
  28 import com.google.common.util.concurrent.ListenableFuture;
  29
  30 public class ItmInternalTunnelDeleteWorker {
  31    private static final Logger logger = LoggerFactory.getLogger(ItmInternalTunnelDeleteWorker.class) ;
  32
  33     public static List<ListenableFuture<Void>> deleteTunnels(DataBroker dataBroker, List<DPNTEPsInfo> dpnTepsList, List<DPNTEPsInfo> meshedDpnList)
  34     {
  35         List<ListenableFuture<Void>> futures = new ArrayList<>();
  36         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  37         try {
  38             if (dpnTepsList == null || dpnTepsList.size() == 0) {
  39                 logger.debug("no vtep to delete");
  40                 return null ;
  41             }
  42
  43             if (meshedDpnList == null || meshedDpnList.size() == 0) {
  44                 logger.debug("No Meshed Vteps");
  45                 return null ;
  46             }
  47             for (DPNTEPsInfo srcDpn : dpnTepsList) {
  48                 logger.trace("Processing srcDpn " + srcDpn);
  49                 for (TunnelEndPoints srcTep : srcDpn.getTunnelEndPoints()) {
  50                     logger.trace("Processing srcTep " + srcTep);
  51                     String srcTZone = srcTep.getTransportZone();
  52
  53                     // run through all other DPNS other than srcDpn
  54                     for (DPNTEPsInfo dstDpn : meshedDpnList) {
  55                         if (!(srcDpn.getDPNID().equals(dstDpn.getDPNID()))) {
  56                             for (TunnelEndPoints dstTep : dstDpn.getTunnelEndPoints()) {
  57                                 logger.trace("Processing dstTep " + dstTep);
  58                                 if (dstTep.getTransportZone().equals(srcTZone)) {
  59                                     // remove all trunk interfaces
  60                                     logger.trace("Invoking removeTrunkInterface between source TEP {} , Destination TEP {} " ,srcTep , dstTep);
  61                                     removeTrunkInterface(dataBroker, srcTep, dstTep, srcDpn.getDPNID(), dstDpn.getDPNID(), t, futures);
  62                                 }
  63                             }
  64                         }
  65                     }
  66
  67                     // removing vtep / dpn from Tunnels OpDs.
  68                     InstanceIdentifier<TunnelEndPoints> tepPath =
  69                                     InstanceIdentifier.builder(Tunnels.class).child(DPNTEPsInfo.class, srcDpn.getKey())
  70                                                     .child(TunnelEndPoints.class, srcTep.getKey()).build();
  71
  72                     logger.trace("Tep Removal from DPNTEPSINFO CONFIG DS " + srcTep);
  73                     t.delete(LogicalDatastoreType.CONFIGURATION, tepPath);
  74                     InstanceIdentifier<DPNTEPsInfo> dpnPath =
  75                                     InstanceIdentifier.builder(Tunnels.class).child(DPNTEPsInfo.class, srcDpn.getKey())
  76                                                     .build();
  77                     Optional<DPNTEPsInfo> dpnOptional =
  78                                     ItmUtils.read(LogicalDatastoreType.CONFIGURATION, dpnPath, dataBroker);
  79                     if (dpnOptional.isPresent()) {
  80                         DPNTEPsInfo dpnRead = dpnOptional.get();
  81                         // remove dpn if no vteps exist on dpn
  82                         if (dpnRead.getTunnelEndPoints() == null || dpnRead.getTunnelEndPoints().size() == 0) {
  83                             logger.debug( "Removing Terminating Service Table Flow ") ;
  84                            // setUpOrRemoveTerminatingServiceTable(dpnRead.getDPNID(), false);
  85                             logger.trace("DPN Removal from DPNTEPSINFO CONFIG DS " + dpnRead);
  86                             t.delete(LogicalDatastoreType.CONFIGURATION, dpnPath);
  87                             InstanceIdentifier<Tunnels> tnlContainerPath =
  88                                             InstanceIdentifier.builder(Tunnels.class).build();
  89                             Optional<Tunnels> containerOptional =
  90                                             ItmUtils.read(LogicalDatastoreType.CONFIGURATION,
  91                                                             tnlContainerPath, dataBroker);
  92                             // remove container if no DPNs are present
  93                             if (containerOptional.isPresent()) {
  94                                 Tunnels tnls = containerOptional.get();
  95                                 if (tnls.getDPNTEPsInfo() == null || tnls.getDPNTEPsInfo().isEmpty()) {
  96                                     logger.trace("Container Removal from DPNTEPSINFO CONFIG DS");
  97                                     t.delete(LogicalDatastoreType.CONFIGURATION, tnlContainerPath);
  98                                 }
  99                             }
 100                         }
 101                     }
 102                 }
 103             }
 104             futures.add( t.submit() );
 105         } catch (Exception e1) {
 106             logger.error("exception while deleting tep", e1);
 107         }
 108         return futures ;
 109     }
 110
 111     private static void removeTrunkInterface(DataBroker dataBroker, TunnelEndPoints srcTep, TunnelEndPoints dstTep, BigInteger srcDpnId, BigInteger dstDpnId,
 112         WriteTransaction t, List<ListenableFuture<Void>> futures) {
 113         String trunkfwdIfName =
 114                         ItmUtils.getTrunkInterfaceName(srcTep.getInterfaceName(), srcTep.getIpAddress()
 115                                         .getIpv4Address().getValue(), dstTep.getIpAddress().getIpv4Address()
 116                                         .getValue());
 117         logger.trace("Removing forward Trunk Interface " + trunkfwdIfName);
 118         InstanceIdentifier<Interface> trunkIdentifier = ItmUtils.buildId(trunkfwdIfName);
 119         logger.debug(  " Removing Trunk Interface Name - {} , Id - {} from Config DS {}, {} ", trunkfwdIfName, trunkIdentifier ) ;
 120         t.delete(LogicalDatastoreType.CONFIGURATION, trunkIdentifier);
 121         String trunkRevIfName =
 122                         ItmUtils.getTrunkInterfaceName(dstTep.getInterfaceName(), dstTep.getIpAddress()
 123                                         .getIpv4Address().getValue(), srcTep.getIpAddress().getIpv4Address()
 124                                         .getValue());
 125         logger.trace("Removing Reverse Trunk Interface " + trunkRevIfName);
 126         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 }