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 com.typesafe.config.Config;
  19 import com.typesafe.config.ConfigFactory;
  20 import org.opendaylight.controller.remote.rpc.messages.UpdateSchemaContext;
  21 import org.opendaylight.controller.remote.rpc.registry.RpcRegistry;
  22 import org.opendaylight.controller.remote.rpc.utils.ActorUtil;
  23 import org.opendaylight.controller.sal.core.api.Broker;
  24 import org.opendaylight.controller.sal.core.api.RpcProvisionRegistry;
  25 import org.opendaylight.yangtools.yang.common.QName;
  26 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29 import scala.concurrent.duration.Duration;
  30 import java.util.Set;
  31
  32 /**
  33  * This class acts as a supervisor, creates all the actors, resumes them, if an exception is thrown.
  34  *
  35  * It also starts the rpc listeners
  36  */
  37
  38 public class RpcManager extends AbstractUntypedActor {
  39
  40   private static final Logger LOG = LoggerFactory.getLogger(RpcManager.class);
  41
  42   private SchemaContext schemaContext;
  43   private ActorRef rpcBroker;
  44   private ActorRef rpcRegistry;
  45   private final Broker.ProviderSession brokerSession;
  46   private RpcListener rpcListener;
  47   private RoutedRpcListener routeChangeListener;
  48   private RemoteRpcImplementation rpcImplementation;
  49   private final RpcProvisionRegistry rpcProvisionRegistry;
  50
  51   private RpcManager(SchemaContext schemaContext,
  52                      Broker.ProviderSession brokerSession, RpcProvisionRegistry rpcProvisionRegistry) {
  53     this.schemaContext = schemaContext;
  54     this.brokerSession = brokerSession;
  55     this.rpcProvisionRegistry = rpcProvisionRegistry;
  56
  57     createRpcActors();
  58     startListeners();
  59   }
  60
  61
  62   public static Props props(final SchemaContext schemaContext,
  63                             final Broker.ProviderSession brokerSession, final RpcProvisionRegistry rpcProvisionRegistry) {
  64     return Props.create(new Creator<RpcManager>() {
  65       @Override
  66       public RpcManager create() throws Exception {
  67         return new RpcManager(schemaContext, brokerSession, rpcProvisionRegistry);
  68       }
  69     });
  70   }
  71
  72   private void createRpcActors() {
  73     LOG.debug("Create rpc registry and broker actors");
  74
  75       Config conf = ConfigFactory.load();
  76
  77     rpcRegistry =
  78             getContext().actorOf(Props.create(RpcRegistry.class).
  79                 withMailbox(ActorUtil.MAILBOX), ActorConstants.RPC_REGISTRY);
  80
  81     rpcBroker =
  82             getContext().actorOf(RpcBroker.props(brokerSession, rpcRegistry, schemaContext).
  83                 withMailbox(ActorUtil.MAILBOX),ActorConstants.RPC_BROKER);
  84
  85     RpcRegistry.Messages.SetLocalRouter localRouter = new RpcRegistry.Messages.SetLocalRouter(rpcBroker);
  86     rpcRegistry.tell(localRouter, self());
  87   }
  88
  89   private void startListeners() {
  90     LOG.debug("Registers rpc listeners");
  91
  92     rpcListener = new RpcListener(rpcRegistry);
  93     routeChangeListener = new RoutedRpcListener(rpcRegistry);
  94     rpcImplementation = new RemoteRpcImplementation(rpcBroker, schemaContext);
  95
  96     brokerSession.addRpcRegistrationListener(rpcListener);
  97     rpcProvisionRegistry.registerRouteChangeListener(routeChangeListener);
  98     rpcProvisionRegistry.setRoutedRpcDefaultDelegate(rpcImplementation);
  99     announceSupportedRpcs();
 100   }
 101
 102   /**
 103    * Add all the locally registered RPCs in the clustered routing table
 104    */
 105   private void announceSupportedRpcs(){
 106     LOG.debug("Adding all supported rpcs to routing table");
 107     Set<QName> currentlySupported = brokerSession.getSupportedRpcs();
 108     for (QName rpc : currentlySupported) {
 109       rpcListener.onRpcImplementationAdded(rpc);
 110     }
 111   }
 112
 113
 114   @Override
 115   protected void handleReceive(Object message) throws Exception {
 116     if(message instanceof UpdateSchemaContext) {
 117       updateSchemaContext((UpdateSchemaContext) message);
 118     }
 119
 120   }
 121
 122   private void updateSchemaContext(UpdateSchemaContext message) {
 123     this.schemaContext = message.getSchemaContext();
 124   }
 125
 126   @Override
 127   public SupervisorStrategy supervisorStrategy() {
 128     return new OneForOneStrategy(10, Duration.create("1 minute"),
 129         new Function<Throwable, SupervisorStrategy.Directive>() {
 130           @Override
 131           public SupervisorStrategy.Directive apply(Throwable t) {
 132             return SupervisorStrategy.resume();
 133           }
 134         }
 135     );
 136   }
 137 }