opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/sal/dom/broker/BrokerImpl.xtend

   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.controller.sal.dom.broker;
   9
  10 import java.util.Collections
  11 import java.util.HashMap
  12 import java.util.HashSet
  13 import java.util.Map
  14 import java.util.Set
  15 import java.util.concurrent.Callable
  16 import java.util.concurrent.ExecutorService
  17 import java.util.concurrent.Executors
  18 import java.util.concurrent.Future
  19 import org.opendaylight.controller.sal.core.api.Broker
  20 import org.opendaylight.controller.sal.core.api.BrokerService
  21 import org.opendaylight.controller.sal.core.api.Consumer
  22 import org.opendaylight.controller.sal.core.api.Provider
  23 import org.opendaylight.controller.sal.core.spi.BrokerModule
  24 import org.opendaylight.yangtools.yang.common.QName
  25 import org.opendaylight.yangtools.yang.common.RpcResult
  26 import org.opendaylight.yangtools.yang.data.api.CompositeNode
  27 import org.osgi.framework.BundleContext
  28 import org.slf4j.LoggerFactory
  29 import org.opendaylight.controller.sal.dom.broker.spi.RpcRouter
  30 import org.opendaylight.yangtools.concepts.ListenerRegistration
  31 import org.opendaylight.controller.sal.core.api.RpcRegistrationListener
  32 import org.opendaylight.controller.sal.core.api.RpcProvisionRegistry
  33 import org.opendaylight.controller.sal.core.api.RpcImplementation
  34 import org.opendaylight.controller.md.sal.common.api.routing.RouteChangeListener
  35 import org.opendaylight.controller.sal.core.api.RpcRoutingContext
  36 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier
  37
  38 public class BrokerImpl implements Broker, RpcProvisionRegistry, AutoCloseable {
  39     private static val log = LoggerFactory.getLogger(BrokerImpl);
  40
  41     // Broker Generic Context
  42     private val Set<ConsumerContextImpl> sessions = Collections.synchronizedSet(new HashSet<ConsumerContextImpl>());
  43     private val Set<ProviderContextImpl> providerSessions = Collections.synchronizedSet(
  44         new HashSet<ProviderContextImpl>());
  45
  46     // Implementation specific
  47     @Property
  48     private var ExecutorService executor = Executors.newFixedThreadPool(5);
  49     @Property
  50     private var BundleContext bundleContext;
  51
  52     @Property
  53     private var AutoCloseable deactivator;
  54
  55     @Property
  56     private var RpcRouter router;
  57
  58     override registerConsumer(Consumer consumer, BundleContext ctx) {
  59         checkPredicates(consumer);
  60         log.trace("Registering consumer " + consumer);
  61         val session = newSessionFor(consumer, ctx);
  62         consumer.onSessionInitiated(session);
  63         sessions.add(session);
  64         return session;
  65     }
  66
  67     override registerProvider(Provider provider, BundleContext ctx) {
  68         checkPredicates(provider);
  69
  70         val session = newSessionFor(provider, ctx);
  71         provider.onSessionInitiated(session);
  72         providerSessions.add(session);
  73         return session;
  74     }
  75
  76     protected def Future<RpcResult<CompositeNode>> invokeRpc(QName rpc, CompositeNode input) {
  77         val result = executor.submit([|router.invokeRpc(rpc, input)] as Callable<RpcResult<CompositeNode>>);
  78         return result;
  79     }
  80
  81     // Validation
  82     private def void checkPredicates(Provider prov) {
  83         if (prov == null)
  84             throw new IllegalArgumentException("Provider should not be null.");
  85         for (ProviderContextImpl session : providerSessions) {
  86             if (prov.equals(session.getProvider()))
  87                 throw new IllegalStateException("Provider already registered");
  88         }
  89
  90     }
  91
  92     private def void checkPredicates(Consumer cons) {
  93         if (cons == null)
  94             throw new IllegalArgumentException("Consumer should not be null.");
  95         for (ConsumerContextImpl session : sessions) {
  96             if (cons.equals(session.getConsumer()))
  97                 throw new IllegalStateException("Consumer already registered");
  98         }
  99     }
 100
 101     // Private Factory methods
 102     private def ConsumerContextImpl newSessionFor(Consumer provider, BundleContext ctx) {
 103         val ret = new ConsumerContextImpl(provider, ctx);
 104         ret.broker = this;
 105         return ret;
 106     }
 107
 108     private def ProviderContextImpl newSessionFor(Provider provider, BundleContext ctx) {
 109         val ret = new ProviderContextImpl(provider, ctx);
 110         ret.broker = this;
 111         return ret;
 112     }
 113
 114     protected def void consumerSessionClosed(ConsumerContextImpl consumerContextImpl) {
 115         sessions.remove(consumerContextImpl);
 116         providerSessions.remove(consumerContextImpl);
 117     }
 118
 119     override close() throws Exception {
 120         deactivator?.close();
 121     }
 122
 123     override addRpcImplementation(QName rpcType, RpcImplementation implementation) throws IllegalArgumentException {
 124         router.addRpcImplementation(rpcType,implementation);
 125     }
 126
 127     override addRoutedRpcImplementation(QName rpcType, RpcImplementation implementation) {
 128         router.addRoutedRpcImplementation(rpcType,implementation);
 129     }
 130
 131     override addRpcRegistrationListener(RpcRegistrationListener listener) {
 132         return router.addRpcRegistrationListener(listener);
 133     }
 134
 135     override <L extends RouteChangeListener<RpcRoutingContext, InstanceIdentifier>> registerRouteChangeListener(L listener) {
 136         return router.registerRouteChangeListener(listener);
 137     }
 138
 139 }