2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.controller.sal.binding.impl
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
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.*
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
29 import org.slf4j.LoggerFactory
30 import org.opendaylight.controller.sal.binding.codegen.impl.RuntimeCodeGenerator
32 class BindingAwareBrokerImpl implements BindingAwareBroker {
33 private static val log = LoggerFactory.getLogger(BindingAwareBrokerImpl)
35 private val clsPool = ClassPool.getDefault()
36 private var RuntimeCodeGenerator generator;
37 private Map<Class<? extends RpcService>, RpcProxyContext> managedProxies = new HashMap();
38 private var NotificationBrokerImpl notifyBroker
39 private var ServiceRegistration<NotificationProviderService> notifyBrokerRegistration
42 var BundleContext brokerBundleContext
47 // Initialization of notificationBroker
48 notifyBroker = new NotificationBrokerImpl(null);
49 val brokerProperties = newProperties();
50 notifyBrokerRegistration = brokerBundleContext.registerService(NotificationProviderService, notifyBroker,
52 brokerBundleContext.registerService(NotificationService, notifyBroker, brokerProperties)
57 // YANG Binding Class Loader
58 clsPool.appendClassPath(new LoaderClassPath(RpcService.classLoader));
59 generator = new RuntimeCodeGenerator(clsPool);
62 override registerConsumer(BindingAwareConsumer consumer, BundleContext bundleCtx) {
63 val ctx = consumer.createContext(bundleCtx)
64 consumer.onSessionInitialized(ctx)
68 override registerProvider(BindingAwareProvider provider, BundleContext bundleCtx) {
69 val ctx = provider.createContext(bundleCtx)
70 provider.onSessionInitialized(ctx)
71 provider.onSessionInitiated(ctx as ProviderContext)
75 private def createContext(BindingAwareConsumer consumer, BundleContext consumerCtx) {
76 new OsgiConsumerContext(consumerCtx, this)
79 private def createContext(BindingAwareProvider provider, BundleContext providerCtx) {
80 new OsgiProviderContext(providerCtx, this)
84 * Returns a Managed Direct Proxy for supplied class
86 * Managed direct proxy is a generated proxy class conforming to the supplied interface
87 * which delegates all calls to the backing delegate.
89 * Proxy does not do any validation, null pointer checks or modifies data in any way, it
90 * is only use to avoid exposing direct references to backing implementation of service.
92 * If proxy class does not exist for supplied service class it will be generated automatically.
94 def <T extends RpcService> getManagedDirectProxy(Class<T> service) {
96 var RpcProxyContext existing = null
97 if ((existing = managedProxies.get(service)) != null) {
100 val proxyClass = generator.generateDirectProxy(service)
101 val rpcProxyCtx = new RpcProxyContext(proxyClass)
102 val properties = new Hashtable<String, String>()
103 rpcProxyCtx.proxy = proxyClass.newInstance as RpcService
105 properties.salServiceType = SAL_SERVICE_TYPE_CONSUMER_PROXY
106 rpcProxyCtx.registration = brokerBundleContext.registerService(service, rpcProxyCtx.proxy as T, properties)
107 managedProxies.put(service, rpcProxyCtx)
108 return rpcProxyCtx.proxy
111 * Registers RPC Implementation
114 def <T extends RpcService> registerRpcImplementation(Class<T> type, T service, OsgiProviderContext context,
115 Hashtable<String, String> properties) {
116 val proxy = getManagedDirectProxy(type)
117 if(proxy.delegate != null) {
118 throw new IllegalStateException("Service " + type + "is already registered");
120 val osgiReg = context.bundleContext.registerService(type, service, properties);
121 proxy.delegate = service;
122 return new RpcServiceRegistrationImpl<T>(type, service, osgiReg);