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 java.util.ArrayList;
  11 import java.util.List;
  12 import java.util.stream.Collectors;
  13 import javax.annotation.PostConstruct;
  14 import javax.inject.Inject;
  15 import javax.inject.Singleton;
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  19 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  20 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  21 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.FibEntries;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTables;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTablesKey;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntry;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentrybase.RoutePaths;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntryBuilder;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 @Singleton
  34 public class FibEntriesListener extends AsyncDataTreeChangeListenerBase<VrfEntry, FibEntriesListener> {
  35     private static final Logger LOG = LoggerFactory.getLogger(FibEntriesListener.class);
  36     private final DataBroker dataBroker;
  37     private final ManagedNewTransactionRunner txRunner;
  38     private final VpnInstanceListener vpnInstanceListener;
  39
  40     @Inject
  41     public FibEntriesListener(final DataBroker dataBroker, final VpnInstanceListener vpnInstanceListener) {
  42         super(VrfEntry.class, FibEntriesListener.class);
  43         this.dataBroker = dataBroker;
  44         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  45         this.vpnInstanceListener = vpnInstanceListener;
  46     }
  47
  48     @PostConstruct
  49     public void start() {
  50         LOG.info("{} start", getClass().getSimpleName());
  51         registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
  52     }
  53
  54     @Override
  55     protected InstanceIdentifier<VrfEntry> getWildCardPath() {
  56         return InstanceIdentifier.create(FibEntries.class).child(VrfTables.class).child(VrfEntry.class);
  57     }
  58
  59     @Override
  60     protected FibEntriesListener getDataTreeChangeListener() {
  61         return FibEntriesListener.this;
  62     }
  63
  64
  65     @Override
  66     protected void remove(InstanceIdentifier<VrfEntry> identifier,
  67         VrfEntry del) {
  68         LOG.trace("Remove Fib event - Key : {}, value : {} ", identifier, del);
  69         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class, VrfTablesKey.class);
  70         String rd = key.getRouteDistinguisher();
  71         List<RoutePaths> routePaths = del.getRoutePaths();
  72         removeLabelFromVpnInstance(rd, routePaths);
  73     }
  74
  75     @Override
  76     protected void update(InstanceIdentifier<VrfEntry> identifier,
  77         VrfEntry original, VrfEntry update) {
  78         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class, VrfTablesKey.class);
  79         String rd = key.getRouteDistinguisher();
  80         List<RoutePaths> originalRoutePaths = new ArrayList<>(original.getRoutePaths());
  81         List<RoutePaths> updateRoutePaths = new ArrayList<>(update.getRoutePaths());
  82         if (originalRoutePaths.size() < updateRoutePaths.size()) {
  83             updateRoutePaths.removeAll(originalRoutePaths);
  84             addLabelToVpnInstance(rd, updateRoutePaths);
  85         } else if (originalRoutePaths.size() > updateRoutePaths.size()) {
  86             originalRoutePaths.removeAll(updateRoutePaths);
  87             removeLabelFromVpnInstance(rd, originalRoutePaths);
  88         }
  89     }
  90
  91     @Override
  92     protected void add(InstanceIdentifier<VrfEntry> identifier,
  93         VrfEntry add) {
  94         LOG.trace("Add Vrf Entry event - Key : {}, value : {}", identifier, add);
  95         final VrfTablesKey key = identifier.firstKeyOf(VrfTables.class, VrfTablesKey.class);
  96         String rd = key.getRouteDistinguisher();
  97         addLabelToVpnInstance(rd, add.getRoutePaths());
  98     }
  99
 100     private void addLabelToVpnInstance(String rd, List<RoutePaths> routePaths) {
 101         List<Long> labels = routePaths.stream().map(RoutePaths::getLabel).distinct()
 102                             .collect(Collectors.toList());
 103         VpnInstanceOpDataEntry vpnInstanceOpData = vpnInstanceListener.getVpnInstanceOpData(rd);
 104         if (vpnInstanceOpData != null) {
 105             List<Long> routeIds = vpnInstanceOpData.getRouteEntryId() == null ? new ArrayList<>()
 106                     : vpnInstanceOpData.getRouteEntryId();
 107             labels.forEach(label -> {
 108                 LOG.debug("Adding label to vpn info - {}", label);
 109                 if (!routeIds.contains(label)) {
 110                     routeIds.add(label);
 111                 }
 112             });
 113             ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(tx ->
 114                             tx.put(LogicalDatastoreType.OPERATIONAL,
 115                                     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<Long> labels = routePaths.stream().map(RoutePaths::getLabel).distinct()
 126                 .collect(Collectors.toList());
 127         VpnInstanceOpDataEntry vpnInstanceOpData = vpnInstanceListener.getVpnInstanceOpData(rd);
 128         if (vpnInstanceOpData != null) {
 129             List<Long> 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(tx ->
 136                                 tx.put(LogicalDatastoreType.OPERATIONAL,
 137                                         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 }