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.PostConstruct;
  16 import javax.inject.Inject;
  17 import javax.inject.Singleton;
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  21 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  22 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  23 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.FibEntries;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTables;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTablesKey;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntry;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentrybase.RoutePaths;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntryBuilder;
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 @Singleton
  36 public class FibEntriesListener extends AsyncDataTreeChangeListenerBase<VrfEntry, FibEntriesListener> {
  37     private static final Logger LOG = LoggerFactory.getLogger(FibEntriesListener.class);
  38     private final DataBroker dataBroker;
  39     private final ManagedNewTransactionRunner txRunner;
  40     private final VpnInstanceListener vpnInstanceListener;
  41
  42     @Inject
  43     public FibEntriesListener(final DataBroker dataBroker, final VpnInstanceListener vpnInstanceListener) {
  44         super(VrfEntry.class, FibEntriesListener.class);
  45         this.dataBroker = dataBroker;
  46         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  47         this.vpnInstanceListener = vpnInstanceListener;
  48     }
  49
  50     @PostConstruct
  51     public void start() {
  52         LOG.info("{} start", getClass().getSimpleName());
  53         registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
  54     }
  55
  56     @Override
  57     protected InstanceIdentifier<VrfEntry> getWildCardPath() {
  58         return InstanceIdentifier.create(FibEntries.class).child(VrfTables.class).child(VrfEntry.class);
  59     }
  60
  61     @Override
  62     protected FibEntriesListener getDataTreeChangeListener() {
  63         return FibEntriesListener.this;
  64     }
  65
  66
  67     @Override
  68     protected void remove(InstanceIdentifier<VrfEntry> identifier,
  69         VrfEntry del) {
  70         LOG.trace("Remove Fib event - Key : {}, value : {} ", identifier, del);
  71         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class);
  72         String rd = key.getRouteDistinguisher();
  73         List<RoutePaths> routePaths = del.getRoutePaths();
  74         removeLabelFromVpnInstance(rd, routePaths);
  75     }
  76
  77     @Override
  78     protected void update(InstanceIdentifier<VrfEntry> identifier,
  79         VrfEntry original, VrfEntry update) {
  80         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class);
  81         String rd = key.getRouteDistinguisher();
  82         List<RoutePaths> originalRoutePaths = new ArrayList<>(original.getRoutePaths());
  83         List<RoutePaths> updateRoutePaths = new ArrayList<>(update.getRoutePaths());
  84         if (originalRoutePaths.size() < updateRoutePaths.size()) {
  85             updateRoutePaths.removeAll(originalRoutePaths);
  86             addLabelToVpnInstance(rd, updateRoutePaths);
  87         } else if (originalRoutePaths.size() > updateRoutePaths.size()) {
  88             originalRoutePaths.removeAll(updateRoutePaths);
  89             removeLabelFromVpnInstance(rd, originalRoutePaths);
  90         }
  91     }
  92
  93     @Override
  94     protected void add(InstanceIdentifier<VrfEntry> identifier,
  95         VrfEntry add) {
  96         LOG.trace("Add Vrf Entry event - Key : {}, value : {}", identifier, add);
  97         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class);
  98         String rd = key.getRouteDistinguisher();
  99         addLabelToVpnInstance(rd, add.getRoutePaths());
 100     }
 101
 102     private void addLabelToVpnInstance(String rd, List<RoutePaths> routePaths) {
 103         List<Long> labels = routePaths.stream().map(RoutePaths::getLabel).distinct()
 104                             .collect(Collectors.toList());
 105         VpnInstanceOpDataEntry vpnInstanceOpData = vpnInstanceListener.getVpnInstanceOpData(rd);
 106         if (vpnInstanceOpData != null) {
 107             List<Long> routeIds = vpnInstanceOpData.getRouteEntryId() == null ? new ArrayList<>()
 108                     : vpnInstanceOpData.getRouteEntryId();
 109             labels.forEach(label -> {
 110                 LOG.debug("Adding label to vpn info - {}", label);
 111                 if (!routeIds.contains(label)) {
 112                     routeIds.add(label);
 113                 }
 114             });
 115             ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx ->
 116                             tx.put(VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 117                                     new VpnInstanceOpDataEntryBuilder(vpnInstanceOpData).setRouteEntryId(routeIds)
 118                                             .build())),
 119                     LOG, "Error adding label to VPN instance");
 120         } else {
 121             LOG.warn("No VPN Instance found for RD: {}", rd);
 122         }
 123     }
 124
 125     private void removeLabelFromVpnInstance(String rd, List<RoutePaths> routePaths) {
 126         List<Long> labels = routePaths.stream().map(RoutePaths::getLabel).distinct()
 127                 .collect(Collectors.toList());
 128         VpnInstanceOpDataEntry vpnInstanceOpData = vpnInstanceListener.getVpnInstanceOpData(rd);
 129         if (vpnInstanceOpData != null) {
 130             List<Long> routeIds = vpnInstanceOpData.getRouteEntryId();
 131             if (routeIds == null) {
 132                 LOG.debug("Fib Route entry is empty.");
 133             } else {
 134                 LOG.debug("Removing label from vpn info - {}", labels);
 135                 routeIds.removeAll(labels);
 136                 ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx ->
 137                                 tx.put(VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 138                                         new VpnInstanceOpDataEntryBuilder(vpnInstanceOpData).setRouteEntryId(routeIds)
 139                                                 .build())),
 140                         LOG, "Error removing label from VPN instance");
 141             }
 142         } else {
 143             LOG.warn("No VPN Instance found for RD: {}", rd);
 144         }
 145     }
 146 }