opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/sal/binding/impl/BindingAwareBrokerImpl.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.binding.impl
   9
  10 import org.opendaylight.controller.sal.binding.api.BindingAwareConsumer
  11 import org.opendaylight.controller.sal.binding.api.BindingAwareProvider
  12 import org.opendaylight.yangtools.yang.binding.RpcService
  13 import javassist.ClassPool
  14 import org.osgi.framework.BundleContext
  15 import java.util.Map
  16 import java.util.HashMap
  17 import javassist.LoaderClassPath
  18 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker
  19 import java.util.Hashtable
  20 import static extension org.opendaylight.controller.sal.binding.codegen.RuntimeCodeHelper.*
  21
  22 import org.opendaylight.controller.sal.binding.api.NotificationProviderService
  23 import org.osgi.framework.ServiceRegistration
  24 import static org.opendaylight.controller.sal.binding.impl.osgi.Constants.*
  25 import static extension org.opendaylight.controller.sal.binding.impl.osgi.PropertiesUtils.*
  26 import org.opendaylight.controller.sal.binding.api.NotificationService
  27 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.ProviderContext
  28
  29 import org.slf4j.LoggerFactory
  30 import org.opendaylight.controller.sal.binding.codegen.impl.RuntimeCodeGenerator
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier
  32 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.RoutedRpcRegistration
  33 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.RpcRegistration
  34
  35 class BindingAwareBrokerImpl implements BindingAwareBroker {
  36     private static val log = LoggerFactory.getLogger(BindingAwareBrokerImpl)
  37
  38     private val clsPool = ClassPool.getDefault()
  39     private var RuntimeCodeGenerator generator;
  40     private Map<Class<? extends RpcService>, RpcProxyContext> managedProxies = new HashMap();
  41     private var NotificationBrokerImpl notifyBroker
  42     private var ServiceRegistration<NotificationProviderService> notifyBrokerRegistration
  43
  44     @Property
  45     var BundleContext brokerBundleContext
  46
  47     def start() {
  48         initGenerator();
  49
  50         // Initialization of notificationBroker
  51         notifyBroker = new NotificationBrokerImpl(null);
  52         val brokerProperties = newProperties();
  53         notifyBrokerRegistration = brokerBundleContext.registerService(NotificationProviderService, notifyBroker,
  54             brokerProperties)
  55         brokerBundleContext.registerService(NotificationService, notifyBroker, brokerProperties)
  56     }
  57
  58     def initGenerator() {
  59
  60         // YANG Binding Class Loader
  61         clsPool.appendClassPath(new LoaderClassPath(RpcService.classLoader));
  62         generator = new RuntimeCodeGenerator(clsPool);
  63     }
  64
  65     override registerConsumer(BindingAwareConsumer consumer, BundleContext bundleCtx) {
  66         val ctx = consumer.createContext(bundleCtx)
  67         consumer.onSessionInitialized(ctx)
  68         return ctx
  69     }
  70
  71     override registerProvider(BindingAwareProvider provider, BundleContext bundleCtx) {
  72         val ctx = provider.createContext(bundleCtx)
  73         provider.onSessionInitialized(ctx)
  74         provider.onSessionInitiated(ctx as ProviderContext)
  75         return ctx
  76     }
  77
  78     private def createContext(BindingAwareConsumer consumer, BundleContext consumerCtx) {
  79         new OsgiConsumerContext(consumerCtx, this)
  80     }
  81
  82     private def createContext(BindingAwareProvider provider, BundleContext providerCtx) {
  83         new OsgiProviderContext(providerCtx, this)
  84     }
  85
  86     /**
  87      * Returns a Managed Direct Proxy for supplied class
  88      *
  89      * Managed direct proxy is a generated proxy class conforming to the supplied interface
  90      * which delegates all calls to the backing delegate.
  91      *
  92      * Proxy does not do any validation, null pointer checks or modifies data in any way, it
  93      * is only use to avoid exposing direct references to backing implementation of service.
  94      *
  95      * If proxy class does not exist for supplied service class it will be generated automatically.
  96      */
  97     def <T extends RpcService> getManagedDirectProxy(Class<T> service) {
  98
  99         var RpcProxyContext existing = null
 100         if((existing = managedProxies.get(service)) != null) {
 101             return existing.proxy
 102         }
 103         val proxyClass = generator.generateDirectProxy(service)
 104         val rpcProxyCtx = new RpcProxyContext(proxyClass)
 105         val properties = new Hashtable<String, String>()
 106         rpcProxyCtx.proxy = proxyClass.newInstance as RpcService
 107
 108         properties.salServiceType = SAL_SERVICE_TYPE_CONSUMER_PROXY
 109         rpcProxyCtx.registration = brokerBundleContext.registerService(service, rpcProxyCtx.proxy as T, properties)
 110         managedProxies.put(service, rpcProxyCtx)
 111         return rpcProxyCtx.proxy
 112     }
 113
 114     /**
 115      * Registers RPC Implementation
 116      *
 117      */
 118     def <T extends RpcService> registerRpcImplementation(Class<T> type, T service, OsgiProviderContext context,
 119         Hashtable<String, String> properties) {
 120         val proxy = getManagedDirectProxy(type)
 121         if(proxy.delegate != null) {
 122             throw new IllegalStateException("Service " + type + "is already registered");
 123         }
 124         val osgiReg = context.bundleContext.registerService(type, service, properties);
 125         proxy.delegate = service;
 126         return new RpcServiceRegistrationImpl<T>(type, service, osgiReg);
 127     }
 128
 129     def <T extends RpcService> RpcRegistration<T> registerMountedRpcImplementation(Class<T> tyoe, T service, InstanceIdentifier identifier,
 130         OsgiProviderContext context, Hashtable<String, String> properties) {
 131         throw new UnsupportedOperationException("TODO: auto-generated method stub")
 132     }
 133
 134     def <T extends RpcService> RoutedRpcRegistration<T> registerRoutedRpcImplementation(Class<T> type, T service, OsgiProviderContext context,
 135         Hashtable<String, String> properties) {
 136         throw new UnsupportedOperationException("TODO: auto-generated method stub")
 137     }
 138
 139 }