opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/config/yang/md/sal/dom/impl/SchemaServiceImplSingletonModule.java

   1 /*
   2  * Copyright (c) 2014 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.config.yang.md.sal.dom.impl;
   9
  10 import org.opendaylight.controller.sal.core.api.model.SchemaService;
  11 import org.opendaylight.controller.sal.dom.broker.GlobalBundleScanningSchemaServiceImpl;
  12 import org.opendaylight.yangtools.concepts.Delegator;
  13 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  14 import org.opendaylight.yangtools.yang.model.api.Module;
  15 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  16 import org.opendaylight.yangtools.yang.model.api.SchemaServiceListener;
  17 import org.osgi.framework.BundleContext;
  18 import org.osgi.framework.ServiceReference;
  19
  20 /**
  21 *
  22 */
  23 public final class SchemaServiceImplSingletonModule extends
  24         org.opendaylight.controller.config.yang.md.sal.dom.impl.AbstractSchemaServiceImplSingletonModule {
  25
  26     BundleContext bundleContext;
  27
  28     public SchemaServiceImplSingletonModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier,
  29             org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
  30         super(identifier, dependencyResolver);
  31     }
  32
  33     public SchemaServiceImplSingletonModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier,
  34             org.opendaylight.controller.config.api.DependencyResolver dependencyResolver,
  35             SchemaServiceImplSingletonModule oldModule, java.lang.AutoCloseable oldInstance) {
  36         super(identifier, dependencyResolver, oldModule, oldInstance);
  37     }
  38
  39     @Override
  40     public boolean canReuseInstance(AbstractSchemaServiceImplSingletonModule oldModule) {
  41         return true;
  42     }
  43
  44     public BundleContext getBundleContext() {
  45         return bundleContext;
  46     }
  47
  48     public void setBundleContext(BundleContext bundleContext) {
  49         this.bundleContext = bundleContext;
  50     }
  51
  52     @Override
  53     public void validate() {
  54         super.validate();
  55     }
  56
  57     @Override
  58     public java.lang.AutoCloseable createInstance() {
  59         ServiceReference<SchemaService> ref = getBundleContext().getServiceReference(SchemaService.class);
  60         if (ref != null) {
  61             return new GlobalSchemaServiceProxy(getBundleContext(), ref);
  62         }
  63
  64         GlobalBundleScanningSchemaServiceImpl newInstance = new GlobalBundleScanningSchemaServiceImpl();
  65         newInstance.setContext(getBundleContext());
  66         newInstance.start();
  67         return newInstance;
  68     }
  69
  70     public class GlobalSchemaServiceProxy implements AutoCloseable, SchemaService, Delegator<SchemaService> {
  71
  72         private BundleContext bundleContext;
  73         private ServiceReference<SchemaService> reference;
  74         private SchemaService delegate;
  75
  76         public GlobalSchemaServiceProxy(BundleContext bundleContext, ServiceReference<SchemaService> ref) {
  77             this.bundleContext = bundleContext;
  78             this.reference = ref;
  79             this.delegate = bundleContext.getService(reference);
  80         }
  81
  82         @Override
  83         public void close() throws Exception {
  84             if (delegate != null) {
  85                 delegate = null;
  86                 bundleContext.ungetService(reference);
  87                 reference = null;
  88                 bundleContext = null;
  89             }
  90         }
  91
  92         public void addModule(Module arg0) {
  93             delegate.addModule(arg0);
  94         }
  95
  96         public SchemaContext getGlobalContext() {
  97             return delegate.getGlobalContext();
  98         }
  99
 100         public SchemaContext getSessionContext() {
 101             return delegate.getSessionContext();
 102         }
 103
 104         public ListenerRegistration<SchemaServiceListener> registerSchemaServiceListener(SchemaServiceListener arg0) {
 105             return delegate.registerSchemaServiceListener(arg0);
 106         }
 107
 108         public void removeModule(Module arg0) {
 109             delegate.removeModule(arg0);
 110         }
 111
 112         @Override
 113         public SchemaService getDelegate() {
 114             return delegate;
 115         }
 116
 117     }
 118 }