1 files changed, 80 insertions, 0 deletions
diff --git a/infra/test-utils/test-tools/src/main/java/io/fd/honeycomb/test/tools/YangContextProducer.java b/infra/test-utils/test-tools/src/main/java/io/fd/honeycomb/test/tools/YangContextProducer.java
new file mode 100644
index 000000000..23af9733d
--- /dev/null
+++ b/infra/test-utils/test-tools/src/main/java/io/fd/honeycomb/test/tools/YangContextProducer.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.test.tools;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import io.fd.honeycomb.test.tools.annotations.SchemaContextProvider;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import javassist.ClassPool;
+import org.apache.commons.lang3.reflect.MethodUtils;
+import org.opendaylight.controller.md.sal.binding.impl.BindingToNormalizedNodeCodec;
+import org.opendaylight.yangtools.binding.data.codec.gen.impl.StreamWriterGenerator;
+import org.opendaylight.yangtools.binding.data.codec.impl.BindingNormalizedNodeCodecRegistry;
+import org.opendaylight.yangtools.sal.binding.generator.impl.ModuleInfoBackedContext;
+import org.opendaylight.yangtools.sal.binding.generator.util.BindingRuntimeContext;
+import org.opendaylight.yangtools.sal.binding.generator.util.JavassistUtils;
+import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactory;
+import org.opendaylight.yangtools.yang.data.util.AbstractModuleStringInstanceIdentifierCodec;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+
+/**
+ * Common logic to initialize serializers/deserializers/etc while working with yang based data
+ */
+interface YangContextProducer {
+
+    default ModuleInfoBackedContext getCheckedModuleInfoContext(final Object test)
+            throws IllegalAccessException, InvocationTargetException {
+        final Method[] suitableMethods =
+                MethodUtils.getMethodsWithAnnotation(test.getClass(), SchemaContextProvider.class);
+        checkState(suitableMethods.length == 1, "Only single method should be @SchemaContextProvider, actual : %s",
+                suitableMethods);
+        final Object possibleContext = suitableMethods[0].invoke(test);
+        checkState(possibleContext instanceof ModuleInfoBackedContext, "%s is not ModuleInfoBackedContext",
+                possibleContext);
+        return ModuleInfoBackedContext.class.cast(possibleContext);
+    }
+
+    /**
+     * Get a codec for instance identifiers.
+     */
+    default AbstractModuleStringInstanceIdentifierCodec getIIDCodec(final ModuleInfoBackedContext ctx)
+            throws NoSuchMethodException, ClassNotFoundException, InstantiationException, IllegalAccessException,
+            java.lang.reflect.InvocationTargetException {
+        // Reusing codec for JSON ... not public so here goes reflection
+
+        final JSONCodecFactory jsonCodecFactory = JSONCodecFactory.create(ctx.getSchemaContext());
+        final Constructor<?> cstr =
+                Class.forName("org.opendaylight.yangtools.yang.data.codec.gson.JSONStringInstanceIdentifierCodec")
+                        .getDeclaredConstructor(SchemaContext.class, JSONCodecFactory.class);
+        cstr.setAccessible(true);
+        return (AbstractModuleStringInstanceIdentifierCodec) cstr.newInstance(ctx.getSchemaContext(), jsonCodecFactory);
+    }
+
+    default BindingToNormalizedNodeCodec createSerializer(final ModuleInfoBackedContext moduleInfoBackedContext,
+                                                          final SchemaContext schemaContexts) {
+
+        final BindingNormalizedNodeCodecRegistry codecRegistry =
+                new BindingNormalizedNodeCodecRegistry(
+                        StreamWriterGenerator.create(JavassistUtils.forClassPool(ClassPool.getDefault())));
+        codecRegistry
+                .onBindingRuntimeContextUpdated(BindingRuntimeContext.create(moduleInfoBackedContext, schemaContexts));
+        return new BindingToNormalizedNodeCodec(moduleInfoBackedContext, codecRegistry);
+    }
+}