opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/config/yang/md/sal/binding/impl/BindingBrokerImplSingletonModuleFactory.java

   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
   9 package org.opendaylight.controller.config.yang.md.sal.binding.impl;
  10
  11 import java.util.Collections;
  12 import java.util.Set;
  13
  14 import org.opendaylight.controller.config.api.DependencyResolver;
  15 import org.opendaylight.controller.config.api.DependencyResolverFactory;
  16 import org.opendaylight.controller.config.api.DynamicMBeanWithInstance;
  17 import org.opendaylight.controller.config.api.ModuleIdentifier;
  18 import org.opendaylight.controller.config.spi.Module;
  19 import org.osgi.framework.BundleContext;
  20
  21 /**
  22 *
  23 */
  24 public class BindingBrokerImplSingletonModuleFactory extends
  25         org.opendaylight.controller.config.yang.md.sal.binding.impl.AbstractBindingBrokerImplSingletonModuleFactory {
  26
  27     private static final String SINGLETON_NAME = "binding-broker-singleton";
  28     public static BindingBrokerImplSingletonModule SINGLETON;
  29     public static ModuleIdentifier SINGLETON_IDENTIFIER = new ModuleIdentifier(NAME, SINGLETON_NAME);
  30
  31     @Override
  32     public Module createModule(String instanceName, DependencyResolver dependencyResolver, BundleContext bundleContext) {
  33         throw new UnsupportedOperationException("Only default instance supported.");
  34     }
  35
  36     @Override
  37     public Module createModule(String instanceName, DependencyResolver dependencyResolver,
  38             DynamicMBeanWithInstance old, BundleContext bundleContext) throws Exception {
  39         return SINGLETON;
  40     }
  41
  42     @Override
  43     public Set<BindingBrokerImplSingletonModule> getDefaultModules(DependencyResolverFactory dependencyResolverFactory,
  44             BundleContext bundleContext) {
  45             if (SINGLETON == null) {
  46
  47                 DependencyResolver dependencyResolver = dependencyResolverFactory
  48                         .createDependencyResolver(SINGLETON_IDENTIFIER);
  49                 SINGLETON = new BindingBrokerImplSingletonModule(SINGLETON_IDENTIFIER, dependencyResolver);
  50                 SINGLETON.setBundleContext(bundleContext);
  51             }
  52
  53             return Collections.singleton(SINGLETON);
  54     }
  55
  56 }