infra/test-utils/test-tools/src/main/java/io/fd/honeycomb/test/tools/YangContextProducer.java

   1 /*
   2  * Copyright (c) 2016 Cisco and/or its affiliates.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package io.fd.honeycomb.test.tools;
  18
  19 import static com.google.common.base.Preconditions.checkState;
  20
  21 import io.fd.honeycomb.test.tools.annotations.SchemaContextProvider;
  22 import java.lang.reflect.Constructor;
  23 import java.lang.reflect.InvocationTargetException;
  24 import java.lang.reflect.Method;
  25 import javassist.ClassPool;
  26 import org.apache.commons.lang3.reflect.MethodUtils;
  27 import org.opendaylight.controller.md.sal.binding.impl.BindingToNormalizedNodeCodec;
  28 import org.opendaylight.mdsal.binding.generator.impl.ModuleInfoBackedContext;
  29 import org.opendaylight.mdsal.binding.generator.util.BindingRuntimeContext;
  30 import org.opendaylight.mdsal.binding.generator.util.JavassistUtils;
  31 import org.opendaylight.yangtools.binding.data.codec.gen.impl.StreamWriterGenerator;
  32 import org.opendaylight.yangtools.binding.data.codec.impl.BindingNormalizedNodeCodecRegistry;
  33 import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactory;
  34 import org.opendaylight.yangtools.yang.data.util.AbstractModuleStringInstanceIdentifierCodec;
  35 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  36
  37 /**
  38  * Common logic to initialize serializers/deserializers/etc while working with yang based data
  39  */
  40 interface YangContextProducer {
  41
  42     default ModuleInfoBackedContext getCheckedModuleInfoContext(final Object test)
  43             throws IllegalAccessException, InvocationTargetException {
  44         final Method[] suitableMethods =
  45                 MethodUtils.getMethodsWithAnnotation(test.getClass(), SchemaContextProvider.class);
  46         checkState(suitableMethods.length == 1, "Only single method should be @SchemaContextProvider, actual : %s",
  47                 suitableMethods);
  48         final Object possibleContext = suitableMethods[0].invoke(test);
  49         checkState(possibleContext instanceof ModuleInfoBackedContext, "%s is not ModuleInfoBackedContext",
  50                 possibleContext);
  51         return ModuleInfoBackedContext.class.cast(possibleContext);
  52     }
  53
  54     /**
  55      * Get a codec for instance identifiers.
  56      */
  57     default AbstractModuleStringInstanceIdentifierCodec getIIDCodec(final ModuleInfoBackedContext ctx)
  58             throws NoSuchMethodException, ClassNotFoundException, InstantiationException, IllegalAccessException,
  59             java.lang.reflect.InvocationTargetException {
  60         // Reusing codec for JSON ... not public so here goes reflection
  61
  62         final JSONCodecFactory jsonCodecFactory = JSONCodecFactory.create(ctx.getSchemaContext());
  63         final Constructor<?> cstr =
  64                 Class.forName("org.opendaylight.yangtools.yang.data.codec.gson.JSONInstanceIdentifierCodec")
  65                         .getDeclaredConstructor(SchemaContext.class, JSONCodecFactory.class);
  66         cstr.setAccessible(true);
  67         return (AbstractModuleStringInstanceIdentifierCodec) cstr.newInstance(ctx.getSchemaContext(), jsonCodecFactory);
  68     }
  69
  70     default BindingToNormalizedNodeCodec createSerializer(final ModuleInfoBackedContext moduleInfoBackedContext) {
  71
  72         final BindingNormalizedNodeCodecRegistry codecRegistry =
  73                 new BindingNormalizedNodeCodecRegistry(
  74                         StreamWriterGenerator.create(JavassistUtils.forClassPool(ClassPool.getDefault())));
  75         codecRegistry
  76                 .onBindingRuntimeContextUpdated(
  77                     BindingRuntimeContext.create(moduleInfoBackedContext, moduleInfoBackedContext.getSchemaContext()));
  78         return new BindingToNormalizedNodeCodec(moduleInfoBackedContext, codecRegistry);
  79     }
  80 }