pcep/topology/topology-provider/src/main/java/org/opendaylight/bgpcep/pcep/topology/provider/PCEPTopologyProvider.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. 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.bgpcep.pcep.topology.provider;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11 import static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.util.concurrent.FluentFuture;
  14 import io.netty.channel.Channel;
  15 import io.netty.channel.ChannelFuture;
  16 import io.netty.channel.ChannelFutureListener;
  17 import java.util.Collections;
  18 import java.util.List;
  19 import java.util.Optional;
  20 import java.util.concurrent.ExecutionException;
  21 import org.opendaylight.bgpcep.pcep.topology.provider.config.PCEPTopologyConfiguration;
  22 import org.opendaylight.bgpcep.pcep.topology.provider.config.PCEPTopologyProviderDependencies;
  23 import org.opendaylight.bgpcep.programming.spi.InstructionScheduler;
  24 import org.opendaylight.bgpcep.topology.DefaultTopologyReference;
  25 import org.opendaylight.mdsal.binding.api.RpcProviderService;
  26 import org.opendaylight.mdsal.common.api.CommitInfo;
  27 import org.opendaylight.protocol.pcep.PCEPCapability;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.programming.rev181109.NetworkTopologyPcepProgrammingService;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev181109.NetworkTopologyPcepService;
  30 import org.opendaylight.yangtools.concepts.ObjectRegistration;
  31
  32 public final class PCEPTopologyProvider extends DefaultTopologyReference {
  33     private static final String STATEFUL_NOT_DEFINED = "Stateful capability not defined, aborting PCEP Topology"
  34             + " Provider instantiation";
  35     private final ServerSessionManager manager;
  36     private final PCEPTopologyProviderDependencies dependenciesProvider;
  37     private final PCEPTopologyConfiguration configDependencies;
  38     private final InstructionScheduler scheduler;
  39     private ObjectRegistration<NetworkTopologyPcepProgrammingService> network;
  40     private ObjectRegistration<NetworkTopologyPcepService> element;
  41     private Channel channel;
  42
  43     private PCEPTopologyProvider(
  44             final PCEPTopologyConfiguration configDependencies,
  45             final PCEPTopologyProviderDependencies dependenciesProvider,
  46             final ServerSessionManager manager, final InstructionScheduler scheduler) {
  47         super(configDependencies.getTopology());
  48         this.dependenciesProvider = requireNonNull(dependenciesProvider);
  49         this.configDependencies = configDependencies;
  50         this.manager = requireNonNull(manager);
  51         this.scheduler = requireNonNull(scheduler);
  52     }
  53
  54     public static PCEPTopologyProvider create(final PCEPTopologyProviderDependencies dependenciesProvider,
  55             final InstructionScheduler scheduler, final PCEPTopologyConfiguration configDependencies) {
  56         final List<PCEPCapability> capabilities = dependenciesProvider.getPCEPDispatcher()
  57                 .getPCEPSessionNegotiatorFactory().getPCEPSessionProposalFactory().getCapabilities();
  58         final Optional<PCEPCapability> statefulCapability = capabilities
  59                 .stream()
  60                 .filter(PCEPCapability::isStateful)
  61                 .findAny();
  62
  63         final TopologySessionListenerFactory listenerFactory = dependenciesProvider.getTopologySessionListenerFactory();
  64         if (!statefulCapability.isPresent()) {
  65             throw new IllegalStateException(STATEFUL_NOT_DEFINED);
  66         }
  67
  68         final ServerSessionManager manager = new ServerSessionManager(dependenciesProvider, listenerFactory,
  69                 configDependencies);
  70
  71         return new PCEPTopologyProvider(configDependencies, dependenciesProvider, manager, scheduler);
  72     }
  73
  74     public void instantiateServiceInstance() throws ExecutionException, InterruptedException {
  75         final RpcProviderService rpcRegistry = this.dependenciesProvider.getRpcProviderRegistry();
  76
  77         this.element = requireNonNull(rpcRegistry
  78             .registerRpcImplementation(NetworkTopologyPcepService.class, new TopologyRPCs(this.manager),
  79                 Collections.singleton(this.configDependencies.getTopology())));
  80
  81         this.network = requireNonNull(rpcRegistry
  82             .registerRpcImplementation(NetworkTopologyPcepProgrammingService.class,
  83                 new TopologyProgramming(this.scheduler, this.manager),
  84                 Collections.singleton(this.configDependencies.getTopology())));
  85
  86         this.manager.instantiateServiceInstance();
  87         final ChannelFuture channelFuture = this.dependenciesProvider.getPCEPDispatcher()
  88                 .createServer(this.manager.getPCEPDispatcherDependencies());
  89         channelFuture.get();
  90         this.channel = channelFuture.channel();
  91     }
  92
  93     public FluentFuture<? extends CommitInfo> closeServiceInstance() {
  94         //FIXME return also channelClose once ListenableFuture implements wildcard
  95         this.channel.close().addListener((ChannelFutureListener) future ->
  96                 checkArgument(future.isSuccess(), "Channel failed to close: %s", future.cause()));
  97
  98         if (this.network != null) {
  99             this.network.close();
 100             this.network = null;
 101         }
 102         if (this.element != null) {
 103             this.element.close();
 104             this.element = null;
 105         }
 106         return this.manager.closeServiceInstance();
 107     }
 108 }