binding/mdsal-binding-dom-adapter/src/test/java/org/opendaylight/mdsal/binding/dom/adapter/test/util/MockSchemaService.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.mdsal.binding.dom.adapter.test.util;
   9
  10 import static com.google.common.base.Verify.verifyNotNull;
  11
  12 import com.google.common.cache.CacheBuilder;
  13 import com.google.common.cache.CacheLoader;
  14 import com.google.common.cache.LoadingCache;
  15 import java.util.ServiceLoader;
  16 import org.opendaylight.mdsal.binding.dom.adapter.AdapterContext;
  17 import org.opendaylight.mdsal.binding.dom.adapter.CurrentAdapterSerializer;
  18 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecFactory;
  19 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
  20 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeContext;
  21 import org.opendaylight.mdsal.dom.api.DOMSchemaService;
  22 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  23 import org.opendaylight.yangtools.util.ListenerRegistry;
  24 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  25 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContextListener;
  26 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContextProvider;
  27
  28 public final class MockSchemaService implements DOMSchemaService, EffectiveModelContextProvider, AdapterContext {
  29     // Codec has some amount of non-trivial state, such as generated classes. Its operation should not be affected by
  30     // anything except BindingRuntimeContext, hence we should be able to reuse it.
  31     private static final LoadingCache<BindingRuntimeContext, BindingDOMCodecServices> CODEC_CACHE =
  32         CacheBuilder.newBuilder().weakKeys().weakValues().build(
  33             new CacheLoader<BindingRuntimeContext, BindingDOMCodecServices>() {
  34                 @Override
  35                 public BindingDOMCodecServices load(final BindingRuntimeContext key) {
  36                     return ServiceLoader.load(BindingDOMCodecFactory.class)
  37                             .findFirst().orElseThrow().createBindingDOMCodec(key);
  38                 }
  39             });
  40
  41     private EffectiveModelContext schemaContext;
  42     private CurrentAdapterSerializer serializer;
  43
  44     final ListenerRegistry<EffectiveModelContextListener> listeners = ListenerRegistry.create();
  45
  46     @Override
  47     public synchronized EffectiveModelContext getGlobalContext() {
  48         return schemaContext;
  49     }
  50
  51     @Override
  52     public ListenerRegistration<EffectiveModelContextListener> registerSchemaContextListener(
  53             final EffectiveModelContextListener listener) {
  54         return listeners.register(listener);
  55     }
  56
  57     @Override
  58     public synchronized EffectiveModelContext getEffectiveModelContext() {
  59         return schemaContext;
  60     }
  61
  62     public synchronized void changeSchema(final BindingRuntimeContext newContext) {
  63         serializer = new CurrentAdapterSerializer(CODEC_CACHE.getUnchecked(newContext));
  64         schemaContext = newContext.getEffectiveModelContext();
  65         listeners.streamListeners().forEach(listener -> listener.onModelContextUpdated(schemaContext));
  66     }
  67
  68     @Override
  69     public synchronized CurrentAdapterSerializer currentSerializer() {
  70         return verifyNotNull(serializer);
  71     }
  72 }