vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/DpnInVpnChangeListener.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.netvirt.vpnmanager;
   9
  10 import com.google.common.base.Optional;
  11 import java.math.BigInteger;
  12 import java.util.Collection;
  13 import java.util.List;
  14 import java.util.concurrent.ExecutionException;
  15 import javax.inject.Inject;
  16 import javax.inject.Singleton;
  17 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  18 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  21 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  22 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  23 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  24 import org.opendaylight.netvirt.vpnmanager.api.VpnHelper;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AddDpnEvent;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AddInterfaceToDpnOnVpnEvent;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.OdlL3vpnListener;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.RemoveDpnEvent;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.RemoveInterfaceFromDpnOnVpnEvent;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.remove.dpn.event.RemoveEventData;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnList;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 @Singleton
  38 public class DpnInVpnChangeListener implements OdlL3vpnListener {
  39     private static final Logger LOG = LoggerFactory.getLogger(DpnInVpnChangeListener.class);
  40     private final DataBroker dataBroker;
  41     private final ManagedNewTransactionRunner txRunner;
  42
  43     @Inject
  44     public DpnInVpnChangeListener(DataBroker dataBroker) {
  45         this.dataBroker = dataBroker;
  46         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  47     }
  48
  49     @Override
  50     public void onAddDpnEvent(AddDpnEvent notification) {
  51
  52     }
  53
  54     @Override
  55     public void onRemoveDpnEvent(RemoveDpnEvent notification) {
  56
  57         RemoveEventData eventData = notification.getRemoveEventData();
  58         final String rd = eventData.getRd();
  59         final String vpnName = eventData.getVpnName();
  60         BigInteger dpnId = eventData.getDpnId();
  61
  62         LOG.trace("Remove Dpn Event notification received for rd {} VpnName {} DpnId {}", rd, vpnName, dpnId);
  63         try {
  64             synchronized (vpnName.intern()) {
  65                 InstanceIdentifier<VpnInstanceOpDataEntry> id = VpnUtil.getVpnInstanceOpDataIdentifier(rd);
  66                 Optional<VpnInstanceOpDataEntry> vpnOpValue =
  67                         SingleTransactionDataBroker.syncReadOptional(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
  68                 if (vpnOpValue.isPresent()) {
  69                     VpnInstanceOpDataEntry vpnInstOpData = vpnOpValue.get();
  70                     List<VpnToDpnList> vpnToDpnList = vpnInstOpData.getVpnToDpnList();
  71                     boolean flushDpnsOnVpn = true;
  72                     for (VpnToDpnList dpn : vpnToDpnList) {
  73                         if (dpn.getDpnState() == VpnToDpnList.DpnState.Active) {
  74                             flushDpnsOnVpn = false;
  75                             break;
  76                         }
  77                     }
  78                     if (flushDpnsOnVpn) {
  79                         try {
  80                             txRunner.callWithNewWriteOnlyTransactionAndSubmit(tx -> deleteDpn(vpnToDpnList, rd, tx))
  81                                     .get();
  82                         } catch (InterruptedException | ExecutionException e) {
  83                             LOG.error("Error removing dpnToVpnList for vpn {} ", vpnName);
  84                             throw new RuntimeException(e.getMessage(), e);
  85                         }
  86                     }
  87                 }
  88             }
  89         } catch (ReadFailedException e) {
  90             LOG.error("onRemoveDpnEvent: Failed to read data store for rd {} vpn {} dpn {}", rd, vpnName, dpnId);
  91         }
  92     }
  93
  94     protected void deleteDpn(Collection<VpnToDpnList> vpnToDpnList, String rd, WriteTransaction writeTxn) {
  95         for (final VpnToDpnList curDpn : vpnToDpnList) {
  96             InstanceIdentifier<VpnToDpnList> vpnToDpnId = VpnHelper.getVpnToDpnListIdentifier(rd, curDpn.getDpnId());
  97             writeTxn.delete(LogicalDatastoreType.OPERATIONAL, vpnToDpnId);
  98         }
  99     }
 100
 101     @Override
 102     public void onAddInterfaceToDpnOnVpnEvent(AddInterfaceToDpnOnVpnEvent notification) {
 103     }
 104
 105     @Override
 106     public void onRemoveInterfaceFromDpnOnVpnEvent(RemoveInterfaceFromDpnOnVpnEvent notification) {
 107     }
 108 }
 109