vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/FibEntriesListener.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 static org.opendaylight.genius.infra.Datastore.OPERATIONAL;
  11
  12 import java.util.ArrayList;
  13 import java.util.List;
  14 import java.util.stream.Collectors;
  15 import javax.annotation.PreDestroy;
  16 import javax.inject.Inject;
  17 import javax.inject.Singleton;
  18 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  19 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  20 import org.opendaylight.infrautils.utils.concurrent.Executors;
  21 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  22 import org.opendaylight.mdsal.binding.api.DataBroker;
  23 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  24 import org.opendaylight.serviceutils.tools.listener.AbstractAsyncDataTreeChangeListener;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.FibEntries;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTables;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTablesKey;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntry;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentrybase.RoutePaths;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntryBuilder;
  32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  33 import org.opendaylight.yangtools.yang.common.Uint32;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 @Singleton
  38 public class FibEntriesListener extends AbstractAsyncDataTreeChangeListener<VrfEntry> {
  39     private static final Logger LOG = LoggerFactory.getLogger(FibEntriesListener.class);
  40     private final DataBroker dataBroker;
  41     private final ManagedNewTransactionRunner txRunner;
  42     private final VpnInstanceListener vpnInstanceListener;
  43
  44     @Inject
  45     public FibEntriesListener(final DataBroker dataBroker, final VpnInstanceListener vpnInstanceListener) {
  46         super(dataBroker, LogicalDatastoreType.OPERATIONAL,
  47                 InstanceIdentifier.create(FibEntries.class).child(VrfTables.class).child(VrfEntry.class),
  48                 Executors.newListeningSingleThreadExecutor("FibEntriesListener", LOG));
  49         this.dataBroker = dataBroker;
  50         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  51         this.vpnInstanceListener = vpnInstanceListener;
  52     }
  53
  54     public void start() {
  55         LOG.info("{} start", getClass().getSimpleName());
  56     }
  57
  58     @Override
  59     @PreDestroy
  60     public void close() {
  61         super.close();
  62         Executors.shutdownAndAwaitTermination(getExecutorService());
  63     }
  64
  65
  66     @Override
  67     public void remove(InstanceIdentifier<VrfEntry> identifier,
  68         VrfEntry del) {
  69         LOG.trace("Remove Fib event - Key : {}, value : {} ", identifier, del);
  70         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class);
  71         String rd = key.getRouteDistinguisher();
  72         List<RoutePaths> routePaths = del.getRoutePaths();
  73         removeLabelFromVpnInstance(rd, routePaths);
  74     }
  75
  76     @Override
  77     public void update(InstanceIdentifier<VrfEntry> identifier,
  78         VrfEntry original, VrfEntry update) {
  79         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class);
  80         String rd = key.getRouteDistinguisher();
  81         List<RoutePaths> originalRoutePaths = new ArrayList<>(original.getRoutePaths());
  82         List<RoutePaths> updateRoutePaths = new ArrayList<>(update.getRoutePaths());
  83         if (originalRoutePaths.size() < updateRoutePaths.size()) {
  84             updateRoutePaths.removeAll(originalRoutePaths);
  85             addLabelToVpnInstance(rd, updateRoutePaths);
  86         } else if (originalRoutePaths.size() > updateRoutePaths.size()) {
  87             originalRoutePaths.removeAll(updateRoutePaths);
  88             removeLabelFromVpnInstance(rd, originalRoutePaths);
  89         }
  90     }
  91
  92     @Override
  93     public void add(InstanceIdentifier<VrfEntry> identifier,
  94         VrfEntry add) {
  95         LOG.trace("Add Vrf Entry event - Key : {}, value : {}", identifier, add);
  96         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class);
  97         String rd = key.getRouteDistinguisher();
  98         addLabelToVpnInstance(rd, add.getRoutePaths());
  99     }
 100
 101     private void addLabelToVpnInstance(String rd, List<RoutePaths> routePaths) {
 102         List<Uint32> labels = routePaths.stream().map(RoutePaths::getLabel).distinct()
 103                             .collect(Collectors.toList());
 104         VpnInstanceOpDataEntry vpnInstanceOpData = vpnInstanceListener.getVpnInstanceOpData(rd);
 105         if (vpnInstanceOpData != null) {
 106             List<Uint32> routeIds = vpnInstanceOpData.getRouteEntryId() == null ? new ArrayList<>()
 107                     : vpnInstanceOpData.getRouteEntryId();
 108             labels.forEach(label -> {
 109                 LOG.debug("Adding label to vpn info - {}", label);
 110                 if (!routeIds.contains(label)) {
 111                     routeIds.add(label);
 112                 }
 113             });
 114             ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx ->
 115                             tx.put(VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 116                                     new VpnInstanceOpDataEntryBuilder(vpnInstanceOpData).setRouteEntryId(routeIds)
 117                                             .build())),
 118                     LOG, "Error adding label to VPN instance");
 119         } else {
 120             LOG.warn("No VPN Instance found for RD: {}", rd);
 121         }
 122     }
 123
 124     private void removeLabelFromVpnInstance(String rd, List<RoutePaths> routePaths) {
 125         List<Uint32> labels = routePaths.stream().map(RoutePaths::getLabel).distinct()
 126                 .collect(Collectors.toList());
 127         VpnInstanceOpDataEntry vpnInstanceOpData = vpnInstanceListener.getVpnInstanceOpData(rd);
 128         if (vpnInstanceOpData != null) {
 129             List<Uint32> routeIds = vpnInstanceOpData.getRouteEntryId();
 130             if (routeIds == null) {
 131                 LOG.debug("Fib Route entry is empty.");
 132             } else {
 133                 LOG.debug("Removing label from vpn info - {}", labels);
 134                 routeIds.removeAll(labels);
 135                 ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx ->
 136                                 tx.put(VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 137                                         new VpnInstanceOpDataEntryBuilder(vpnInstanceOpData).setRouteEntryId(routeIds)
 138                                                 .build())),
 139                         LOG, "Error removing label from VPN instance");
 140             }
 141         } else {
 142             LOG.warn("No VPN Instance found for RD: {}", rd);
 143         }
 144     }
 145 }