vpnservice/vpnmanager/vpnmanager-impl/src/main/java/org/opendaylight/netvirt/vpnmanager/VpnInterfaceOpListener.java

   1 /*
   2  * Copyright (c) 2015 - 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 com.google.common.util.concurrent.CheckedFuture;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.util.ArrayList;
  14 import java.util.List;
  15 import java.util.concurrent.Callable;
  16 import java.util.concurrent.ConcurrentHashMap;
  17 import java.util.concurrent.ExecutionException;
  18 import java.util.concurrent.ExecutorService;
  19 import java.util.concurrent.Executors;
  20 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  21 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  22 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  23 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  26 import org.opendaylight.genius.datastoreutils.DataStoreJobCoordinator;
  27 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  28 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.VpnInterfaces;
  29 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.VpnInterface;
  30 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.VpnInterfaceKey;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.Adjacencies;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.adjacency.list.Adjacency;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.prefix.to._interface.vpn.ids.Prefixes;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance;
  36 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 public class VpnInterfaceOpListener extends AbstractDataChangeListener<VpnInterface> implements AutoCloseable {
  42     private static final Logger LOG = LoggerFactory.getLogger(VpnInterfaceOpListener.class);
  43     private ListenerRegistration<DataChangeListener> listenerRegistration;
  44     private final DataBroker dataBroker;
  45     private final VpnInterfaceManager vpnInterfaceManager;
  46     private ConcurrentHashMap<String, Runnable> vpnIntfMap = new ConcurrentHashMap<String, Runnable>();
  47     private ExecutorService executorService = Executors.newSingleThreadExecutor();
  48
  49     /*public VpnInterfaceOpListener(final DataBroker dataBroker) {
  50         super(VpnInterface.class);
  51         this.dataBroker = dataBroker;
  52     }*/
  53
  54     public VpnInterfaceOpListener(final DataBroker dataBroker, final VpnInterfaceManager vpnInterfaceManager) {
  55         super(VpnInterface.class);
  56         this.dataBroker = dataBroker;
  57         this.vpnInterfaceManager = vpnInterfaceManager;
  58     }
  59
  60     public void start() {
  61         LOG.info("{} start", getClass().getSimpleName());
  62         listenerRegistration = dataBroker.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  63                 getWildCardPath(), this, AsyncDataBroker.DataChangeScope.SUBTREE);
  64     }
  65
  66     private InstanceIdentifier<VpnInterface> getWildCardPath() {
  67         return InstanceIdentifier.create(VpnInterfaces.class).child(VpnInterface.class);
  68     }
  69
  70     @Override
  71     public void close() throws Exception {
  72         if (listenerRegistration != null) {
  73             listenerRegistration.close();
  74             listenerRegistration = null;
  75         }
  76         LOG.info("{} close", getClass().getSimpleName());
  77     }
  78
  79     @Override
  80     protected void remove(final InstanceIdentifier<VpnInterface> identifier, final VpnInterface del) {
  81         final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
  82         final String interfaceName = key.getName();
  83         final String vpnName = del.getVpnInstanceName();
  84         DataStoreJobCoordinator dataStoreCoordinator = DataStoreJobCoordinator.getInstance();
  85         dataStoreCoordinator.enqueueJob("VPNINTERFACE-" + interfaceName,
  86                 new Callable<List<ListenableFuture<Void>>>() {
  87                     @Override
  88                     public List<ListenableFuture<Void>> call() throws Exception {
  89                         WriteTransaction writeOperTxn = dataBroker.newWriteOnlyTransaction();
  90                         postProcessVpnInterfaceRemoval(identifier, del, writeOperTxn);
  91                         List<ListenableFuture<Void>> futures = new ArrayList<ListenableFuture<Void>>();
  92                         futures.add(writeOperTxn.submit());
  93                         return futures;
  94                     }
  95                 });
  96     }
  97
  98     private void postProcessVpnInterfaceRemoval(InstanceIdentifier<VpnInterface> identifier, VpnInterface del,
  99                                                 WriteTransaction writeOperTxn) {
 100         final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 101         String interfaceName = key.getName();
 102         String vpnName = del.getVpnInstanceName();
 103
 104         LOG.info("VpnInterfaceOpListener removed: interface name {} vpnName {}", interfaceName, vpnName);
 105         //decrement the vpn interface count in Vpn Instance Op Data
 106         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to
 107                 .vpn.id.VpnInstance>
 108                 id = VpnUtil.getVpnInstanceToVpnIdIdentifier(vpnName);
 109         Optional<VpnInstance> vpnInstance
 110                 = VpnUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION, id);
 111
 112         if (vpnInstance.isPresent()) {
 113             String rd = null;
 114             rd = vpnInstance.get().getVrfId();
 115             //String rd = getRouteDistinguisher(del.getVpnInstanceName());
 116
 117             VpnInstanceOpDataEntry vpnInstOp = VpnUtil.getVpnInstanceOpData(dataBroker, rd);
 118             LOG.trace("VpnInterfaceOpListener removed: interface name {} rd {} vpnName {}",
 119                     interfaceName, rd, vpnName);
 120
 121             if (vpnInstOp != null) {
 122                 // Vpn Interface removed => No more adjacencies from it.
 123                 // Hence clean up interface from vpn-dpn-interface list.
 124                 Adjacency adjacency = del.getAugmentation(Adjacencies.class).getAdjacency().get(0);
 125                 List<Prefixes> prefixToInterface = new ArrayList<>();
 126                 Optional<Prefixes> prefix = VpnUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL,
 127                         VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 128                                 VpnUtil.getIpPrefix(adjacency.getIpAddress())));
 129                 if (prefix.isPresent()) {
 130                     prefixToInterface.add(prefix.get());
 131                 }
 132                 if (prefixToInterface.isEmpty()) {
 133                     for (String nh : adjacency.getNextHopIpList()) {
 134                         prefix = VpnUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL,
 135                                 VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 136                                         VpnUtil.getIpPrefix(nh)));
 137                         if (prefix.isPresent())
 138                             prefixToInterface.add(prefix.get());
 139                     }
 140                 }
 141                 for (Prefixes pref : prefixToInterface) {
 142                     if (writeOperTxn != null) {
 143                         writeOperTxn.delete(LogicalDatastoreType.OPERATIONAL,
 144                                 VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(), pref.getIpAddress()));
 145                     } else {
 146                         VpnUtil.delete(dataBroker, LogicalDatastoreType.OPERATIONAL,
 147                                 VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(), pref.getIpAddress()),
 148                                 VpnUtil.DEFAULT_CALLBACK);
 149                     }
 150                     vpnInterfaceManager.updateVpnToDpnMapping(pref.getDpnId(), del.getVpnInstanceName(),
 151                             interfaceName, false /* delete */);
 152                 }
 153             }
 154         } else {
 155             LOG.error("rd not retrievable as vpninstancetovpnid for vpn {} is absent, trying rd as ", vpnName, vpnName);
 156         }
 157         notifyTaskIfRequired(interfaceName);
 158     }
 159
 160     private void notifyTaskIfRequired(String intfName) {
 161         Runnable notifyTask = vpnIntfMap.remove(intfName);
 162         if (notifyTask == null) {
 163             LOG.trace("VpnInterfaceOpListener update: No Notify Task queued for vpnInterface {}", intfName);
 164             return;
 165         }
 166         executorService.execute(notifyTask);
 167     }
 168
 169     @Override
 170     protected void update(final InstanceIdentifier<VpnInterface> identifier, final VpnInterface original,
 171                           final VpnInterface update) {
 172         final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 173         final String interfaceName = key.getName();
 174
 175         if (original.getVpnInstanceName().equals(update.getVpnInstanceName())) {
 176             return;
 177         }
 178
 179         final String vpnName = update.getVpnInstanceName();
 180         DataStoreJobCoordinator dataStoreCoordinator = DataStoreJobCoordinator.getInstance();
 181         dataStoreCoordinator.enqueueJob("VPNINTERFACE-" + interfaceName,
 182                 new Callable<List<ListenableFuture<Void>>>() {
 183                     @Override
 184                     public List<ListenableFuture<Void>> call() throws Exception {
 185                         postProcessVpnInterfaceUpdate(identifier, original, update);
 186                         return null;
 187                     }
 188                 });
 189     }
 190
 191     private void postProcessVpnInterfaceUpdate(InstanceIdentifier<VpnInterface> identifier, VpnInterface original,
 192                                                VpnInterface update) {
 193         final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 194         String interfaceName = key.getName();
 195
 196         //increment the vpn interface count in Vpn Instance Op Data
 197         VpnInstanceOpDataEntry vpnInstOp = null;
 198         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to
 199                 .vpn.id.VpnInstance>
 200                 origId = VpnUtil.getVpnInstanceToVpnIdIdentifier(original.getVpnInstanceName());
 201         Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id
 202                 .VpnInstance> origVpnInstance
 203                 = VpnUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION, origId);
 204
 205         if (origVpnInstance.isPresent()) {
 206             String rd = null;
 207             rd = origVpnInstance.get().getVrfId();
 208
 209             vpnInstOp = VpnUtil.getVpnInstanceOpData(dataBroker, rd);
 210             LOG.trace("VpnInterfaceOpListener updated: interface name {} original rd {} original vpnName {}",
 211                     interfaceName, rd, original.getVpnInstanceName());
 212
 213             if (vpnInstOp != null) {
 214                 Adjacency adjacency = original.getAugmentation(Adjacencies.class).getAdjacency().get(0);
 215                 List<Prefixes> prefixToInterfaceList = new ArrayList<>();
 216                 Optional<Prefixes> prefixToInterface = VpnUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL,
 217                         VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 218                                 VpnUtil.getIpPrefix(adjacency.getIpAddress())));
 219                 if (prefixToInterface.isPresent()) {
 220                     prefixToInterfaceList.add(prefixToInterface.get());
 221                 } else {
 222                     for (String adj : adjacency.getNextHopIpList()) {
 223                         prefixToInterface = VpnUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL,
 224                                 VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 225                                         VpnUtil.getIpPrefix(adj)));
 226                         if (prefixToInterface.isPresent()) {
 227                             prefixToInterfaceList.add(prefixToInterface.get());
 228                         }
 229                     }
 230                 }
 231                 for (Prefixes prefix : prefixToInterfaceList) {
 232                     vpnInterfaceManager.updateVpnToDpnMapping(prefix.getDpnId(), original.getVpnInstanceName(),
 233                             interfaceName, false /* delete */);
 234                 }
 235             }
 236         }
 237         notifyTaskIfRequired(interfaceName);
 238     }
 239
 240     @Override
 241     protected void add(InstanceIdentifier<VpnInterface> identifier, VpnInterface add) {
 242     }
 243 }