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 com.google.common.base.Optional;
  13 import java.math.BigInteger;
  14 import java.util.Collection;
  15 import java.util.List;
  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.controller.md.sal.binding.api.DataBroker;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  23 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  24 import org.opendaylight.genius.infra.Datastore.Operational;
  25 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  26 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  27 import org.opendaylight.genius.infra.TypedWriteTransaction;
  28 import org.opendaylight.genius.utils.JvmGlobalLocks;
  29 import org.opendaylight.netvirt.vpnmanager.api.VpnHelper;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AddDpnEvent;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.AddInterfaceToDpnOnVpnEvent;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.OdlL3vpnListener;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.RemoveDpnEvent;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.RemoveInterfaceFromDpnOnVpnEvent;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.remove.dpn.event.RemoveEventData;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnList;
  38 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 @Singleton
  43 public class DpnInVpnChangeListener implements OdlL3vpnListener {
  44     private static final Logger LOG = LoggerFactory.getLogger(DpnInVpnChangeListener.class);
  45     private final DataBroker dataBroker;
  46     private final ManagedNewTransactionRunner txRunner;
  47
  48     @Inject
  49     public DpnInVpnChangeListener(DataBroker dataBroker) {
  50         this.dataBroker = dataBroker;
  51         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  52     }
  53
  54     @Override
  55     public void onAddDpnEvent(AddDpnEvent notification) {
  56
  57     }
  58
  59     @Override
  60     public void onRemoveDpnEvent(RemoveDpnEvent notification) {
  61
  62         RemoveEventData eventData = notification.getRemoveEventData();
  63         final String rd = eventData.getRd();
  64         final String vpnName = eventData.getVpnName();
  65         BigInteger dpnId = eventData.getDpnId().toJava();
  66
  67         LOG.trace("Remove Dpn Event notification received for rd {} VpnName {} DpnId {}", rd, vpnName, dpnId);
  68         // FIXME: separate out to somehow?
  69         final ReentrantLock lock = JvmGlobalLocks.getLockForString(vpnName);
  70         lock.lock();
  71         try {
  72             InstanceIdentifier<VpnInstanceOpDataEntry> id = VpnUtil.getVpnInstanceOpDataIdentifier(rd);
  73             Optional<VpnInstanceOpDataEntry> vpnOpValue =
  74                     SingleTransactionDataBroker.syncReadOptional(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
  75             if (vpnOpValue.isPresent()) {
  76                 VpnInstanceOpDataEntry vpnInstOpData = vpnOpValue.get();
  77                 List<VpnToDpnList> vpnToDpnList = vpnInstOpData.nonnullVpnToDpnList();
  78                 boolean flushDpnsOnVpn = true;
  79                 for (VpnToDpnList dpn : vpnToDpnList) {
  80                     if (dpn.getDpnState() == VpnToDpnList.DpnState.Active) {
  81                         flushDpnsOnVpn = false;
  82                         break;
  83                     }
  84                 }
  85                 if (flushDpnsOnVpn) {
  86                     try {
  87                         txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL,
  88                             tx -> deleteDpn(vpnToDpnList, rd, tx)).get();
  89                     } catch (InterruptedException | ExecutionException e) {
  90                         LOG.error("Error removing dpnToVpnList for vpn {} ", vpnName);
  91                         throw new RuntimeException(e.getMessage(), e);
  92                     }
  93                 }
  94             }
  95         } catch (ReadFailedException e) {
  96             LOG.error("onRemoveDpnEvent: Failed to read data store for rd {} vpn {} dpn {}", rd, vpnName, dpnId);
  97         } finally {
  98             lock.unlock();
  99         }
 100     }
 101
 102     protected void deleteDpn(Collection<VpnToDpnList> vpnToDpnList, String rd, TypedWriteTransaction<Operational> tx) {
 103         for (final VpnToDpnList curDpn : vpnToDpnList) {
 104             InstanceIdentifier<VpnToDpnList> vpnToDpnId = VpnHelper.getVpnToDpnListIdentifier(rd,
 105                                                                         curDpn.getDpnId());
 106             tx.delete(vpnToDpnId);
 107         }
 108     }
 109
 110     @Override
 111     public void onAddInterfaceToDpnOnVpnEvent(AddInterfaceToDpnOnVpnEvent notification) {
 112     }
 113
 114     @Override
 115     public void onRemoveInterfaceFromDpnOnVpnEvent(RemoveInterfaceFromDpnOnVpnEvent notification) {
 116     }
 117 }
 118