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 DataBrokerImpl dataBroker
  43     private var ServiceRegistration<NotificationProviderService> notifyBrokerRegistration
  44
  45     @Property
  46     var BundleContext brokerBundleContext
  47
  48     def start() {
  49         initGenerator();
  50
  51         // Initialization of notificationBroker
  52         notifyBroker = new NotificationBrokerImpl(null);
  53         val brokerProperties = newProperties();
  54         notifyBrokerRegistration = brokerBundleContext.registerService(NotificationProviderService, notifyBroker,
  55             brokerProperties)
  56         brokerBundleContext.registerService(NotificationService, notifyBroker, brokerProperties)
  57     }
  58
  59     def initGenerator() {
  60
  61         // YANG Binding Class Loader
  62         clsPool.appendClassPath(new LoaderClassPath(RpcService.classLoader));
  63         generator = new RuntimeCodeGenerator(clsPool);
  64     }
  65
  66     override registerConsumer(BindingAwareConsumer consumer, BundleContext bundleCtx) {
  67         val ctx = consumer.createContext(bundleCtx)
  68         consumer.onSessionInitialized(ctx)
  69         return ctx
  70     }
  71
  72     override registerProvider(BindingAwareProvider provider, BundleContext bundleCtx) {
  73         val ctx = provider.createContext(bundleCtx)
  74         provider.onSessionInitialized(ctx)
  75         provider.onSessionInitiated(ctx as ProviderContext)
  76         return ctx
  77     }
  78
  79     private def createContext(BindingAwareConsumer consumer, BundleContext consumerCtx) {
  80         new OsgiConsumerContext(consumerCtx, this)
  81     }
  82
  83     private def createContext(BindingAwareProvider provider, BundleContext providerCtx) {
  84         new OsgiProviderContext(providerCtx, this)
  85     }
  86
  87     /**
  88      * Returns a Managed Direct Proxy for supplied class
  89      *
  90      * Managed direct proxy is a generated proxy class conforming to the supplied interface
  91      * which delegates all calls to the backing delegate.
  92      *
  93      * Proxy does not do any validation, null pointer checks or modifies data in any way, it
  94      * is only use to avoid exposing direct references to backing implementation of service.
  95      *
  96      * If proxy class does not exist for supplied service class it will be generated automatically.
  97      */
  98     def <T extends RpcService> getManagedDirectProxy(Class<T> service) {
  99
 100         var RpcProxyContext existing = null
 101         if((existing = managedProxies.get(service)) != null) {
 102             return existing.proxy
 103         }
 104         val proxyClass = generator.generateDirectProxy(service)
 105         val rpcProxyCtx = new RpcProxyContext(proxyClass)
 106         val properties = new Hashtable<String, String>()
 107         rpcProxyCtx.proxy = proxyClass.newInstance as RpcService
 108
 109         properties.salServiceType = SAL_SERVICE_TYPE_CONSUMER_PROXY
 110         rpcProxyCtx.registration = brokerBundleContext.registerService(service, rpcProxyCtx.proxy as T, properties)
 111         managedProxies.put(service, rpcProxyCtx)
 112         return rpcProxyCtx.proxy
 113     }
 114
 115     /**
 116      * Registers RPC Implementation
 117      *
 118      */
 119     def <T extends RpcService> registerRpcImplementation(Class<T> type, T service, OsgiProviderContext context,
 120         Hashtable<String, String> properties) {
 121         val proxy = getManagedDirectProxy(type)
 122         if(proxy.delegate != null) {
 123             throw new IllegalStateException("Service " + type + "is already registered");
 124         }
 125         val osgiReg = context.bundleContext.registerService(type, service, properties);
 126         proxy.delegate = service;
 127         return new RpcServiceRegistrationImpl<T>(type, service, osgiReg);
 128     }
 129
 130     def <T extends RpcService> RpcRegistration<T> registerMountedRpcImplementation(Class<T> tyoe, T service, InstanceIdentifier<?> identifier,
 131         OsgiProviderContext context, Hashtable<String, String> properties) {
 132         throw new UnsupportedOperationException("TODO: auto-generated method stub")
 133     }
 134
 135     def <T extends RpcService> RoutedRpcRegistration<T> registerRoutedRpcImplementation(Class<T> type, T service, OsgiProviderContext context,
 136         Hashtable<String, String> properties) {
 137         throw new UnsupportedOperationException("TODO: auto-generated method stub")
 138     }
 139
 140 }