opendaylight/md-sal/sal-remoterpc-connector/src/main/java/org/opendaylight/controller/remote/rpc/RemoteRpcProvider.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.ActorSystem;
  14 import org.opendaylight.controller.remote.rpc.messages.UpdateSchemaContext;
  15 import org.opendaylight.controller.sal.core.api.Broker;
  16 import org.opendaylight.controller.sal.core.api.Provider;
  17 import org.opendaylight.controller.sal.core.api.RpcProvisionRegistry;
  18 import org.opendaylight.controller.sal.core.api.model.SchemaService;
  19 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  20 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 import java.util.Collection;
  25
  26 /**
  27  * This is the base class which initialize all the actors, listeners and
  28  * default RPc implementation so remote invocation of rpcs.
  29  */
  30 public class RemoteRpcProvider implements AutoCloseable, Provider, SchemaContextListener {
  31
  32   private static final Logger LOG = LoggerFactory.getLogger(RemoteRpcProvider.class);
  33
  34   private final RpcProvisionRegistry rpcProvisionRegistry;
  35
  36   private ActorSystem actorSystem;
  37   private Broker.ProviderSession brokerSession;
  38   private SchemaContext schemaContext;
  39   private ActorRef rpcManager;
  40   private RemoteRpcProviderConfig config;
  41
  42
  43   public RemoteRpcProvider(ActorSystem actorSystem, RpcProvisionRegistry rpcProvisionRegistry) {
  44     this.actorSystem = actorSystem;
  45     this.rpcProvisionRegistry = rpcProvisionRegistry;
  46     this.config = new RemoteRpcProviderConfig(actorSystem.settings().config());
  47   }
  48
  49   @Override
  50   public void close() throws Exception {
  51     if (this.actorSystem != null)
  52       this.actorSystem.shutdown();
  53   }
  54
  55   @Override
  56   public void onSessionInitiated(Broker.ProviderSession session) {
  57     this.brokerSession = session;
  58     start();
  59   }
  60
  61   @Override
  62   public Collection<ProviderFunctionality> getProviderFunctionality() {
  63     return null;
  64   }
  65
  66   private void start() {
  67     LOG.info("Starting remote rpc service...");
  68
  69     SchemaService schemaService = brokerSession.getService(SchemaService.class);
  70     schemaContext = schemaService.getGlobalContext();
  71
  72     rpcManager = actorSystem.actorOf(RpcManager.props(schemaContext, brokerSession, rpcProvisionRegistry),
  73                                      config.getRpcManagerName());
  74
  75     LOG.debug("rpc manager started");
  76   }
  77
  78   @Override
  79   public void onGlobalContextUpdated(SchemaContext schemaContext) {
  80     this.schemaContext = schemaContext;
  81     rpcManager.tell(new UpdateSchemaContext(schemaContext), null);
  82
  83   }
  84 }