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 java.util.function.Consumer;
  17 import org.opendaylight.mdsal.binding.dom.adapter.AdapterContext;
  18 import org.opendaylight.mdsal.binding.dom.adapter.CurrentAdapterSerializer;
  19 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecFactory;
  20 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
  21 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeContext;
  22 import org.opendaylight.mdsal.dom.api.DOMSchemaService;
  23 import org.opendaylight.yangtools.concepts.Registration;
  24 import org.opendaylight.yangtools.util.ObjectRegistry;
  25 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  26
  27 public final class MockSchemaService implements DOMSchemaService, AdapterContext {
  28     // Codec has some amount of non-trivial state, such as generated classes. Its operation should not be affected by
  29     // anything except BindingRuntimeContext, hence we should be able to reuse it.
  30     private static final LoadingCache<BindingRuntimeContext, BindingDOMCodecServices> CODEC_CACHE =
  31         CacheBuilder.newBuilder().weakKeys().weakValues().build(
  32             new CacheLoader<BindingRuntimeContext, BindingDOMCodecServices>() {
  33                 @Override
  34                 public BindingDOMCodecServices load(final BindingRuntimeContext key) {
  35                     return ServiceLoader.load(BindingDOMCodecFactory.class)
  36                             .findFirst().orElseThrow().createBindingDOMCodec(key);
  37                 }
  38             });
  39
  40     private EffectiveModelContext modelContext;
  41     private CurrentAdapterSerializer serializer;
  42
  43     final ObjectRegistry<Consumer<EffectiveModelContext>> listeners = ObjectRegistry.createConcurrent("mock schema");
  44
  45     @Override
  46     public synchronized EffectiveModelContext getGlobalContext() {
  47         return modelContext;
  48     }
  49
  50     @Override
  51     public Registration registerSchemaContextListener(final Consumer<EffectiveModelContext> listener) {
  52         return listeners.register(listener);
  53     }
  54
  55     public synchronized void changeSchema(final BindingRuntimeContext newContext) {
  56         serializer = new CurrentAdapterSerializer(CODEC_CACHE.getUnchecked(newContext));
  57         modelContext = newContext.modelContext();
  58         listeners.streamObjects().forEach(listener -> listener.accept(modelContext));
  59     }
  60
  61     @Override
  62     public synchronized CurrentAdapterSerializer currentSerializer() {
  63         return verifyNotNull(serializer);
  64     }
  65 }