opendaylight/md-sal/sal-remoterpc-connector/src/main/java/org/opendaylight/controller/remote/rpc/RpcManager.java

   1 /*
   2  * Copyright (c) 2014 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
   9 package org.opendaylight.controller.remote.rpc;
  10
  11
  12 import akka.actor.ActorRef;
  13 import akka.actor.OneForOneStrategy;
  14 import akka.actor.Props;
  15 import akka.actor.SupervisorStrategy;
  16 import akka.japi.Creator;
  17 import akka.japi.Function;
  18 import org.opendaylight.controller.remote.rpc.messages.UpdateSchemaContext;
  19 import org.opendaylight.controller.remote.rpc.registry.RpcRegistry;
  20 import org.opendaylight.controller.sal.core.api.Broker;
  21 import org.opendaylight.controller.sal.core.api.RpcProvisionRegistry;
  22 import org.opendaylight.yangtools.yang.common.QName;
  23 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26 import scala.concurrent.duration.Duration;
  27 import java.util.Set;
  28
  29 /**
  30  * This class acts as a supervisor, creates all the actors, resumes them, if an exception is thrown.
  31  *
  32  * It also starts the rpc listeners
  33  */
  34
  35 public class RpcManager extends AbstractUntypedActor {
  36
  37   private static final Logger LOG = LoggerFactory.getLogger(RpcManager.class);
  38
  39   private SchemaContext schemaContext;
  40   private ActorRef rpcBroker;
  41   private ActorRef rpcRegistry;
  42   private final Broker.ProviderSession brokerSession;
  43   private RpcListener rpcListener;
  44   private RoutedRpcListener routeChangeListener;
  45   private RemoteRpcImplementation rpcImplementation;
  46   private final RpcProvisionRegistry rpcProvisionRegistry;
  47
  48   private RpcManager(SchemaContext schemaContext,
  49                      Broker.ProviderSession brokerSession, RpcProvisionRegistry rpcProvisionRegistry) {
  50     this.schemaContext = schemaContext;
  51     this.brokerSession = brokerSession;
  52     this.rpcProvisionRegistry = rpcProvisionRegistry;
  53
  54     createRpcActors();
  55     startListeners();
  56   }
  57
  58
  59   public static Props props(final SchemaContext schemaContext,
  60                             final Broker.ProviderSession brokerSession, final RpcProvisionRegistry rpcProvisionRegistry) {
  61     return Props.create(new Creator<RpcManager>() {
  62       @Override
  63       public RpcManager create() throws Exception {
  64         return new RpcManager(schemaContext, brokerSession, rpcProvisionRegistry);
  65       }
  66     });
  67   }
  68
  69   private void createRpcActors() {
  70     LOG.debug("Create rpc registry and broker actors");
  71
  72
  73     rpcRegistry = getContext().actorOf(Props.create(RpcRegistry.class), ActorConstants.RPC_REGISTRY);
  74
  75     rpcBroker = getContext().actorOf(RpcBroker.props(brokerSession, rpcRegistry, schemaContext), ActorConstants.RPC_BROKER);
  76     RpcRegistry.Messages.SetLocalRouter localRouter = new RpcRegistry.Messages.SetLocalRouter(rpcBroker);
  77     rpcRegistry.tell(localRouter, self());
  78   }
  79
  80   private void startListeners() {
  81     LOG.debug("Registers rpc listeners");
  82
  83     rpcListener = new RpcListener(rpcRegistry);
  84     routeChangeListener = new RoutedRpcListener(rpcRegistry);
  85     rpcImplementation = new RemoteRpcImplementation(rpcBroker, schemaContext);
  86
  87     brokerSession.addRpcRegistrationListener(rpcListener);
  88     rpcProvisionRegistry.registerRouteChangeListener(routeChangeListener);
  89     rpcProvisionRegistry.setRoutedRpcDefaultDelegate(rpcImplementation);
  90     announceSupportedRpcs();
  91   }
  92
  93   /**
  94    * Add all the locally registered RPCs in the clustered routing table
  95    */
  96   private void announceSupportedRpcs(){
  97     LOG.debug("Adding all supported rpcs to routing table");
  98     Set<QName> currentlySupported = brokerSession.getSupportedRpcs();
  99     for (QName rpc : currentlySupported) {
 100       rpcListener.onRpcImplementationAdded(rpc);
 101     }
 102   }
 103
 104
 105   @Override
 106   protected void handleReceive(Object message) throws Exception {
 107     if(message instanceof UpdateSchemaContext) {
 108       updateSchemaContext((UpdateSchemaContext) message);
 109     }
 110
 111   }
 112
 113   private void updateSchemaContext(UpdateSchemaContext message) {
 114     this.schemaContext = message.getSchemaContext();
 115   }
 116
 117   @Override
 118   public SupervisorStrategy supervisorStrategy() {
 119     return new OneForOneStrategy(10, Duration.create("1 minute"),
 120         new Function<Throwable, SupervisorStrategy.Directive>() {
 121           @Override
 122           public SupervisorStrategy.Directive apply(Throwable t) {
 123             return SupervisorStrategy.resume();
 124           }
 125         }
 126     );
 127   }
 128 }