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 static org.opendaylight.genius.infra.Datastore.OPERATIONAL;
  11
  12 import java.math.BigInteger;
  13 import java.util.Collection;
  14 import java.util.List;
  15 import java.util.Optional;
  16 import java.util.concurrent.ExecutionException;
  17 import java.util.concurrent.locks.ReentrantLock;
  18 import javax.inject.Inject;
  19 import javax.inject.Singleton;
  20 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  21 import org.opendaylight.genius.infra.Datastore.Operational;
  22 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  23 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  24 import org.opendaylight.genius.infra.TypedWriteTransaction;
  25 import org.opendaylight.genius.utils.JvmGlobalLocks;
  26 import org.opendaylight.mdsal.binding.api.DataBroker;
  27 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  28 import org.opendaylight.netvirt.vpnmanager.api.VpnHelper;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AddDpnEvent;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AddInterfaceToDpnOnVpnEvent;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.OdlL3vpnListener;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.RemoveDpnEvent;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.RemoveInterfaceFromDpnOnVpnEvent;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.remove.dpn.event.RemoveEventData;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnList;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 @Singleton
  42 public class DpnInVpnChangeListener implements OdlL3vpnListener {
  43     private static final Logger LOG = LoggerFactory.getLogger(DpnInVpnChangeListener.class);
  44     private final DataBroker dataBroker;
  45     private final ManagedNewTransactionRunner txRunner;
  46
  47     @Inject
  48     public DpnInVpnChangeListener(DataBroker dataBroker) {
  49         this.dataBroker = dataBroker;
  50         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  51     }
  52
  53     @Override
  54     public void onAddDpnEvent(AddDpnEvent notification) {
  55
  56     }
  57
  58     @Override
  59     public void onRemoveDpnEvent(RemoveDpnEvent notification) {
  60
  61         RemoveEventData eventData = notification.getRemoveEventData();
  62         final String rd = eventData.getRd();
  63         final String vpnName = eventData.getVpnName();
  64         BigInteger dpnId = eventData.getDpnId().toJava();
  65
  66         LOG.trace("Remove Dpn Event notification received for rd {} VpnName {} DpnId {}", rd, vpnName, dpnId);
  67         // FIXME: separate out to somehow?
  68         final ReentrantLock lock = JvmGlobalLocks.getLockForString(vpnName);
  69         lock.lock();
  70         try {
  71             InstanceIdentifier<VpnInstanceOpDataEntry> id = VpnUtil.getVpnInstanceOpDataIdentifier(rd);
  72             Optional<VpnInstanceOpDataEntry> vpnOpValue =
  73                     SingleTransactionDataBroker.syncReadOptional(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
  74             if (vpnOpValue.isPresent()) {
  75                 VpnInstanceOpDataEntry vpnInstOpData = vpnOpValue.get();
  76                 List<VpnToDpnList> vpnToDpnList = vpnInstOpData.nonnullVpnToDpnList();
  77                 boolean flushDpnsOnVpn = true;
  78                 for (VpnToDpnList dpn : vpnToDpnList) {
  79                     if (dpn.getDpnState() == VpnToDpnList.DpnState.Active) {
  80                         flushDpnsOnVpn = false;
  81                         break;
  82                     }
  83                 }
  84                 if (flushDpnsOnVpn) {
  85                     try {
  86                         txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL,
  87                             tx -> deleteDpn(vpnToDpnList, rd, tx)).get();
  88                     } catch (InterruptedException | ExecutionException e) {
  89                         LOG.error("Error removing dpnToVpnList for vpn {} ", vpnName);
  90                         throw new RuntimeException(e.getMessage(), e);
  91                     }
  92                 }
  93             }
  94         } catch (InterruptedException | ExecutionException e) {
  95             LOG.error("onRemoveDpnEvent: Failed to read data store for rd {} vpn {} dpn {}", rd, vpnName, dpnId);
  96         } finally {
  97             lock.unlock();
  98         }
  99     }
 100
 101     protected void deleteDpn(Collection<VpnToDpnList> vpnToDpnList, String rd, TypedWriteTransaction<Operational> tx) {
 102         for (final VpnToDpnList curDpn : vpnToDpnList) {
 103             InstanceIdentifier<VpnToDpnList> vpnToDpnId = VpnHelper.getVpnToDpnListIdentifier(rd,
 104                                                                         curDpn.getDpnId());
 105             tx.delete(vpnToDpnId);
 106         }
 107     }
 108
 109     @Override
 110     public void onAddInterfaceToDpnOnVpnEvent(AddInterfaceToDpnOnVpnEvent notification) {
 111     }
 112
 113     @Override
 114     public void onRemoveInterfaceFromDpnOnVpnEvent(RemoveInterfaceFromDpnOnVpnEvent notification) {
 115     }
 116 }
 117