pcep/tunnel/tunnel-provider/src/main/java/org/opendaylight/bgpcep/pcep/tunnel/provider/TunnelProviderDeployer.java

   1 /*
   2  * Copyright (c) 2017 AT&T Intellectual Property. 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.bgpcep.pcep.tunnel.provider;
   9
  10 import static org.opendaylight.mdsal.common.api.LogicalDatastoreType.CONFIGURATION;
  11
  12 import java.util.Collection;
  13 import java.util.HashMap;
  14 import java.util.List;
  15 import java.util.Map;
  16 import java.util.concurrent.TimeUnit;
  17 import java.util.stream.Collectors;
  18 import javax.annotation.Nonnull;
  19 import javax.annotation.concurrent.GuardedBy;
  20 import org.apache.commons.lang3.StringUtils;
  21 import org.opendaylight.mdsal.binding.api.ClusteredDataTreeChangeListener;
  22 import org.opendaylight.mdsal.binding.api.DataBroker;
  23 import org.opendaylight.mdsal.binding.api.DataObjectModification;
  24 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  25 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  26 import org.opendaylight.mdsal.binding.api.RpcConsumerRegistry;
  27 import org.opendaylight.mdsal.binding.api.RpcProviderService;
  28 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.config.rev181109.PcepTunnelTopologyConfig;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev181109.TopologyTypes1;
  31 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  32 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  33 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  34 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  35 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypes;
  36 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38 import org.osgi.framework.BundleContext;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 public final class TunnelProviderDeployer implements ClusteredDataTreeChangeListener<Topology>, AutoCloseable {
  43
  44     private static final Logger LOG = LoggerFactory.getLogger(TunnelProviderDeployer.class);
  45
  46     private static final long TIMEOUT_NS = TimeUnit.SECONDS.toNanos(5);
  47     private final TunnelProviderDependencies dependencies;
  48     private final InstanceIdentifier<Topology> networTopology;
  49     @GuardedBy("this")
  50     private final Map<TopologyId, PCEPTunnelClusterSingletonService> pcepTunnelServices = new HashMap<>();
  51     @GuardedBy("this")
  52     private ListenerRegistration<TunnelProviderDeployer> listenerRegistration;
  53
  54     public TunnelProviderDeployer(
  55             final DataBroker dataBroker,
  56             final RpcProviderService rpcProviderRegistry,
  57             final RpcConsumerRegistry rpcConsumerRegistry,
  58             final BundleContext bundleContext,
  59             final ClusterSingletonServiceProvider cssp
  60     ) {
  61         LOG.info("Creating Tunnel Provider Deployer");
  62         this.dependencies = new TunnelProviderDependencies(dataBroker, cssp, rpcProviderRegistry, rpcConsumerRegistry,
  63                 bundleContext);
  64         this.networTopology = InstanceIdentifier.builder(NetworkTopology.class).child(Topology.class).build();
  65     }
  66
  67     @SuppressWarnings("checkstyle:IllegalCatch")
  68     private static void closeTopology(final PCEPTunnelClusterSingletonService topology, final TopologyId topologyId) {
  69         if (topology != null) {
  70             try {
  71                 topology.closeServiceInstance().get(TIMEOUT_NS, TimeUnit.NANOSECONDS);
  72             } catch (final Exception e) {
  73                 LOG.error("Topology {} instance failed to close service instance", topologyId, e);
  74             }
  75             topology.close();
  76         }
  77     }
  78
  79     public synchronized void init() {
  80         LOG.info("Instantiate tunnel topology deployer");
  81         this.listenerRegistration = this.dependencies.getDataBroker().registerDataTreeChangeListener(
  82                 DataTreeIdentifier.create(CONFIGURATION, this.networTopology), this);
  83     }
  84
  85     @Override
  86     public synchronized void onDataTreeChanged(@Nonnull final Collection<DataTreeModification<Topology>> changes) {
  87         final List<DataObjectModification<Topology>> topoChanges = changes.stream()
  88                 .map(DataTreeModification::getRootNode)
  89                 .collect(Collectors.toList());
  90
  91         topoChanges.stream().iterator().forEachRemaining(this::handleTopologyChange);
  92     }
  93
  94     private synchronized void handleTopologyChange(final DataObjectModification<Topology> topo) {
  95         switch (topo.getModificationType()) {
  96             case SUBTREE_MODIFIED:
  97                 updateTunnelTopologyProvider(topo.getDataAfter());
  98                 break;
  99             case WRITE:
 100                 createTunnelTopologyProvider(topo.getDataAfter());
 101                 break;
 102             case DELETE:
 103                 removeTunnelTopologyProvider(topo.getDataBefore());
 104                 break;
 105             default:
 106         }
 107     }
 108
 109     private boolean filterPcepTopologies(final TopologyTypes topologyTypes) {
 110         if (topologyTypes == null) {
 111             return false;
 112         }
 113         final TopologyTypes1 aug = topologyTypes.augmentation(TopologyTypes1.class);
 114         return aug != null && aug.getTopologyTunnelPcep() != null;
 115     }
 116
 117     private synchronized void createTunnelTopologyProvider(final Topology topology) {
 118         if (!filterPcepTopologies(topology.getTopologyTypes())) {
 119             return;
 120         }
 121         final TopologyId topologyId = topology.getTopologyId();
 122         if (this.pcepTunnelServices.containsKey(topology.getTopologyId())) {
 123             LOG.warn("Tunnel Topology {} already exist. New instance won't be created", topologyId);
 124             return;
 125         }
 126         LOG.debug("Create Tunnel Topology {}", topologyId);
 127
 128         final PcepTunnelTopologyConfig config = topology.augmentation(PcepTunnelTopologyConfig.class);
 129         final String pcepTopoID = StringUtils
 130                 .substringBetween(config.getPcepTopologyReference().getValue(), "=\"", "\"");
 131         final InstanceIdentifier<Topology> pcepTopoRef = InstanceIdentifier.builder(NetworkTopology.class)
 132                 .child(Topology.class, new TopologyKey(new TopologyId(pcepTopoID))).build();
 133
 134
 135         final PCEPTunnelClusterSingletonService tunnelTopoCss =
 136                 new PCEPTunnelClusterSingletonService(this.dependencies, pcepTopoRef, topologyId);
 137         this.pcepTunnelServices.put(topology.getTopologyId(), tunnelTopoCss);
 138     }
 139
 140     private synchronized void updateTunnelTopologyProvider(final Topology topology) {
 141         if (!filterPcepTopologies(topology.getTopologyTypes())) {
 142             return;
 143         }
 144         final TopologyId topologyId = topology.getTopologyId();
 145         final PCEPTunnelClusterSingletonService previous = this.pcepTunnelServices.remove(topology.getTopologyId());
 146         closeTopology(previous, topologyId);
 147         createTunnelTopologyProvider(topology);
 148     }
 149
 150     private synchronized void removeTunnelTopologyProvider(final Topology topo) {
 151         if (!filterPcepTopologies(topo.getTopologyTypes())) {
 152             return;
 153         }
 154         final TopologyId topologyId = topo.getTopologyId();
 155         final PCEPTunnelClusterSingletonService topology = this.pcepTunnelServices.remove(topologyId);
 156         closeTopology(topology, topologyId);
 157     }
 158
 159     @Override
 160     public synchronized void close() {
 161         LOG.info("Closing tunnel topology deployer");
 162         if (this.listenerRegistration != null) {
 163             this.listenerRegistration.close();
 164             this.listenerRegistration = null;
 165         }
 166         this.pcepTunnelServices.values().iterator().forEachRemaining(PCEPTunnelClusterSingletonService::close);
 167         this.pcepTunnelServices.clear();
 168     }
 169 }