Initial checkin of Notification service

This implementation uses Reflection.Emit to generate proxies for duck-typing of event data on net45 and dnxcore50. For now, the code that does a 'splat' of the top-level event data is still using reflection instead of code-generation. The next update will address this and add more test coverage for this part of the code.
2015-05-13 16:39:00 -07:00 · 2015-05-13 16:39:00 -07:00 · 4cf5452c51
--- a/.gitignore
+++ b/.gitignore
@ -7,6 +7,7 @@ _ReSharper.*/
 packages/
 artifacts/
 PublishProfiles/
+project.lock.json
 *.user
 *.suo
 *.cache
--- a/EventNotification.sln
+++ b/EventNotification.sln
@ -0,0 +1,36 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.22808.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{8B66E199-1AFE-4B68-AC71-4521C46EC4CD}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "test", "test", "{D75011A4-DEEE-48DE-BB83-CE042F2AC05B}"
+EndProject
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.Framework.Notification", "src\Microsoft.Framework.Notification\Microsoft.Framework.Notification.xproj", "{4C660D0B-32C5-43D0-899D-73FF60352172}"
+EndProject
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.Framework.Notification.Test", "test\Microsoft.Framework.Notification.Test\Microsoft.Framework.Notification.Test.xproj", "{51E95E1C-FE88-4DAF-8E03-3FC3153A03AF}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4C660D0B-32C5-43D0-899D-73FF60352172}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4C660D0B-32C5-43D0-899D-73FF60352172}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4C660D0B-32C5-43D0-899D-73FF60352172}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4C660D0B-32C5-43D0-899D-73FF60352172}.Release|Any CPU.Build.0 = Release|Any CPU
+		{51E95E1C-FE88-4DAF-8E03-3FC3153A03AF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{51E95E1C-FE88-4DAF-8E03-3FC3153A03AF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{51E95E1C-FE88-4DAF-8E03-3FC3153A03AF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{51E95E1C-FE88-4DAF-8E03-3FC3153A03AF}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{4C660D0B-32C5-43D0-899D-73FF60352172} = {8B66E199-1AFE-4B68-AC71-4521C46EC4CD}
+		{51E95E1C-FE88-4DAF-8E03-3FC3153A03AF} = {D75011A4-DEEE-48DE-BB83-CE042F2AC05B}
+	EndGlobalSection
+EndGlobal
--- a/global.json
+++ b/global.json
@ -0,0 +1,3 @@
+{
+    "projects": ["src"]
+}
--- a/src/Microsoft.Framework.Notification/INotifier.cs
+++ b/src/Microsoft.Framework.Notification/INotifier.cs
@ -0,0 +1,14 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+namespace Microsoft.Framework.Notification
+{
+    public interface INotifier
+    {
+        void EnlistTarget(object target);
+
+        bool ShouldNotify(string notificationName);
+
+        void Notify(string notificationName, object parameters);
+    }
+}
--- a/src/Microsoft.Framework.Notification/INotifierParameterAdapter.cs
+++ b/src/Microsoft.Framework.Notification/INotifierParameterAdapter.cs
@ -0,0 +1,12 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+
+namespace Microsoft.Framework.Notification
+{
+    public interface INotifyParameterAdapter
+    {
+        object Adapt(object inputParameter, Type outputType);
+    }
+}
--- a/src/Microsoft.Framework.Notification/Internal/CacheResult.cs
+++ b/src/Microsoft.Framework.Notification/Internal/CacheResult.cs
@ -0,0 +1,46 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+#if NET45 || DNX451 || DNXCORE50
+
+using System;
+using System.Reflection.Emit;
+
+namespace Microsoft.Framework.Notification.Internal
+{
+    public class CacheResult
+    {
+        public static CacheResult FromError(Tuple<Type, Type> key, string error)
+        {
+            return new CacheResult()
+            {
+                Key = key,
+                Error = error,
+            };
+        }
+
+        public static CacheResult FromTypeBuilder(
+            Tuple<Type, Type> key,
+            TypeBuilder typeBuilder,
+            ConstructorBuilder constructorBuilder)
+        {
+            return new CacheResult()
+            {
+                Key = key,
+                TypeBuilder = typeBuilder,
+                ConstructorBuilder = constructorBuilder,
+            };
+        }
+
+        public ConstructorBuilder ConstructorBuilder { get; private set; }
+
+        public string Error { get; private set; }
+
+        public bool IsError => Error != null;
+
+        public Tuple<Type, Type> Key { get; private set; }
+
+        public TypeBuilder TypeBuilder { get; private set; }
+    }
+}
+#endif
--- a/src/Microsoft.Framework.Notification/Internal/Converter.cs
+++ b/src/Microsoft.Framework.Notification/Internal/Converter.cs
@ -0,0 +1,376 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+#if NET45 || DNX451 || DNXCORE50
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Reflection;
+using System.Reflection.Emit;
+
+namespace Microsoft.Framework.Notification.Internal
+{
+    public static class Converter
+    {
+        private static int _counter = 0;
+
+        private static AssemblyBuilder AssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(new AssemblyName("ProxyHolderAssembly"), AssemblyBuilderAccess.Run);
+        private static ModuleBuilder ModuleBuilder = AssemblyBuilder.DefineDynamicModule("Main Module");
+
+        public static object Convert(ConverterCache cache, Type outputType, Type inputType, object input)
+        {
+            if (input == null)
+            {
+                return null;
+            }
+
+            if (inputType == outputType)
+            {
+                return input;
+            }
+
+            if (outputType.IsAssignableFrom(inputType))
+            {
+                return input;
+            }
+
+            // If we get to this point, all of the trivial conversions have been tried. We don't attempt value
+            // conversions such as int -> double. The only thing left is proxy generation, which requires that
+            // the destination type be an interface.
+            //
+            // We should always end up with a proxy type or an exception
+            var proxyType = GetProxyType(cache, outputType, inputType);
+            Debug.Assert(proxyType != null);
+
+            return Activator.CreateInstance(proxyType, input);
+        }
+
+        private static Type GetProxyType(ConverterCache cache, Type tout, Type tin)
+        {
+            var key = new Tuple<Type, Type>(tin, tout);
+
+            CacheResult result;
+            if (!cache.TryGetValue(key, out result))
+            {
+                var context = new ProxyBuilderContext(cache, tout, tin);
+
+                // Check that all required types are proxy-able - this will create the TypeBuilder, Constructor,
+                // and property mappings.
+                //
+                // We need to create the TypeBuilder and Constructor up front to deal with cycles that can occur
+                // when generating the proxy properties.
+                if (!VerifyProxySupport(context, context.Key))
+                {
+                    var error = cache[key];
+                    Debug.Assert(error != null && error.IsError);
+                    throw new InvalidOperationException(error.Error);
+                }
+
+                Debug.Assert(context.Visited.ContainsKey(context.Key));
+
+                // Now that we've generated all of the constructors for the proxies, we can generate the rest
+                // of the type.
+                foreach (var verificationResult in context.Visited)
+                {
+                    AddProperties(
+                        context,
+                        verificationResult.Value.TypeBuilder,
+                        verificationResult.Value.Mappings);
+
+
+                    verificationResult.Value.TypeBuilder.CreateTypeInfo().AsType();
+                }
+
+                // We only want to publish the results after all of the proxies are totally generated.
+                foreach (var verificationResult in context.Visited)
+                {
+                    cache[verificationResult.Key] = CacheResult.FromTypeBuilder(
+                        verificationResult.Key, 
+                        verificationResult.Value.TypeBuilder,
+                        verificationResult.Value.ConstructorBuilder);
+                }
+
+                return context.Visited[context.Key].TypeBuilder.CreateTypeInfo().AsType();
+            }
+            else if (result.IsError)
+            {
+                throw new InvalidOperationException(result.Error);
+            }
+            else if (result.TypeBuilder == null)
+            {
+                // This is an identity convertion
+                return null;
+            }
+            else
+            {
+                return result.TypeBuilder.CreateTypeInfo().AsType();
+            }
+        }
+
+        private static bool VerifyProxySupport(ProxyBuilderContext context, Tuple<Type, Type> key)
+        {
+            var sourceType = key.Item1;
+            var targetType = key.Item2;
+
+            if (context.Visited.ContainsKey(key))
+            {
+                // We've already seen this combination and so far so good.
+                return true;
+            }
+
+            CacheResult cacheResult;
+            if (context.Cache.TryGetValue(key, out cacheResult))
+            {
+                // If we get here we've got a published conversion or error, so we can stop searching.
+                return !cacheResult.IsError;
+            }
+
+            if (targetType == sourceType || targetType.IsAssignableFrom(sourceType))
+            {
+                // If we find a trivial conversion, then that will work. 
+                return true;
+            }
+
+            if (!targetType.GetTypeInfo().IsInterface)
+            {
+                var message = Resources.FormatConverter_TypeMustBeInterface(targetType.FullName, sourceType.FullName);
+                context.Cache[key] = CacheResult.FromError(key, message);
+
+                return false;
+            }
+
+            // This is a combination we haven't seen before, and it *might* support proxy generation, so let's 
+            // start trying.
+            var verificationResult = new VerificationResult();
+            context.Visited.Add(key, verificationResult);
+
+            var propertyMappings = new List<KeyValuePair<PropertyInfo, PropertyInfo>>();
+
+            var sourceProperties = sourceType.GetRuntimeProperties();
+            foreach (var targetProperty in targetType.GetRuntimeProperties())
+            {
+                if (!targetProperty.CanRead)
+                {
+                    var message = Resources.FormatConverter_PropertyMustHaveGetter(
+                        targetProperty.Name,
+                        targetType.FullName);
+                    context.Cache[key] = CacheResult.FromError(key, message);
+
+                    return false;
+                }
+
+                if (targetProperty.CanWrite)
+                {
+                    var message = Resources.FormatConverter_PropertyMustNotHaveSetter(
+                        targetProperty.Name,
+                        targetType.FullName);
+                    context.Cache[key] = CacheResult.FromError(key, message);
+
+                    return false;
+                }
+
+                if (targetProperty.GetIndexParameters()?.Length > 0)
+                {
+                    var message = Resources.FormatConverter_PropertyMustNotHaveIndexParameters(
+                        targetProperty.Name,
+                        targetType.FullName);
+                    context.Cache[key] = CacheResult.FromError(key, message);
+
+                    return false;
+                }
+
+                // To allow for flexible versioning, we want to allow missing properties in the source. 
+                //
+                // For now we'll just store null, and later generate a stub getter that returns default(T).
+                var sourceProperty = sourceProperties.Where(p => p.Name == targetProperty.Name).FirstOrDefault();
+                if (sourceProperty != null)
+                {
+                    var propertyKey = new Tuple<Type, Type>(sourceProperty.PropertyType, targetProperty.PropertyType);
+                    if (!VerifyProxySupport(context, propertyKey))
+                    {
+                        // There's an error here, so bubble it up and cache it.
+                        var error = context.Cache[propertyKey];
+                        Debug.Assert(error != null && error.IsError);
+
+                        context.Cache[key] = CacheResult.FromError(key, error.Error);
+                        return false;
+                    }
+                }
+
+                propertyMappings.Add(new KeyValuePair<PropertyInfo, PropertyInfo>(targetProperty, sourceProperty));
+            }
+
+            verificationResult.Mappings = propertyMappings;
+
+            var baseType = typeof(ProxyBase<>).MakeGenericType(sourceType);
+            var typeBuilder = ModuleBuilder.DefineType(
+                "ProxyType" + _counter++ + " wrapping:" + sourceType.Name + " to look like:" + targetType.Name,
+                TypeAttributes.Class,
+                baseType,
+                new Type[] { targetType });
+
+            var constructorBuilder = typeBuilder.DefineConstructor(
+                MethodAttributes.Public,
+                CallingConventions.Standard,
+                new Type[] { sourceType });
+
+            var il = constructorBuilder.GetILGenerator();
+            il.Emit(OpCodes.Ldarg_0);
+            il.Emit(OpCodes.Ldarg_1);
+            il.Emit(OpCodes.Castclass, sourceType);
+            il.Emit(OpCodes.Call, baseType.GetConstructor(new Type[] { sourceType }));
+            il.Emit(OpCodes.Ret);
+
+            verificationResult.ConstructorBuilder = constructorBuilder;
+            verificationResult.TypeBuilder = typeBuilder;
+
+            return true;
+        }
+
+        private static void AddProperties(
+            ProxyBuilderContext context,
+            TypeBuilder typeBuilder,
+            IEnumerable<KeyValuePair<PropertyInfo, PropertyInfo>> properties)
+        {
+            foreach (var property in properties)
+            {
+                var targetProperty = property.Key;
+                var sourceProperty = property.Value;
+
+                var propertyBuilder = typeBuilder.DefineProperty(
+                    targetProperty.Name,
+                    PropertyAttributes.None,
+                    property.Key.PropertyType,
+                    Type.EmptyTypes);
+
+                var methodBuilder = typeBuilder.DefineMethod(
+                    targetProperty.GetMethod.Name,
+                    targetProperty.GetMethod.Attributes & ~MethodAttributes.Abstract,
+                    targetProperty.GetMethod.CallingConvention,
+                    targetProperty.GetMethod.ReturnType,
+                    Type.EmptyTypes);
+                propertyBuilder.SetGetMethod(methodBuilder);
+                typeBuilder.DefineMethodOverride(methodBuilder, targetProperty.GetMethod);
+
+                var il = methodBuilder.GetILGenerator();
+                if (sourceProperty == null)
+                {
+                    // Return a default(T) value.
+                    il.Emit(OpCodes.Initobj, targetProperty.PropertyType);
+                    il.Emit(OpCodes.Ret);
+                }
+                else
+                {
+                    // Push 'this' and get the underlying instance.
+                    il.Emit(OpCodes.Ldarg_0);
+                    il.Emit(OpCodes.Ldfld, 
+                        typeBuilder.BaseType.GetField(
+                            "Instance",
+                            BindingFlags.Instance | BindingFlags.Public));
+
+                    // Call the source property.
+                    il.EmitCall(OpCodes.Callvirt, sourceProperty.GetMethod, null);
+
+                    // Create a proxy for the value returned by source property (if necessary).
+                    EmitProxy(context, il, targetProperty.PropertyType, sourceProperty.PropertyType);
+                    il.Emit(OpCodes.Ret);
+                }
+            }
+        }
+
+        private static void EmitProxy(ProxyBuilderContext context, ILGenerator il, Type targetType, Type sourceType)
+        {
+            if (sourceType == targetType)
+            {
+                // Do nothing.
+                return;
+            }
+            else if (targetType.IsAssignableFrom(sourceType))
+            {
+                il.Emit(OpCodes.Castclass, targetType);
+                return;
+            }
+
+            // If we get here, then we actually need a proxy.
+            var key = new Tuple<Type, Type>(sourceType, targetType);
+
+            ConstructorBuilder constructorBuilder = null;
+            CacheResult cacheResult;
+            VerificationResult verificationResult;
+            if (context.Cache.TryGetValue(key, out cacheResult))
+            {
+                Debug.Assert(!cacheResult.IsError);
+                Debug.Assert(cacheResult.ConstructorBuilder != null);
+
+                // This means we've got a fully-built (published) type.
+                constructorBuilder = cacheResult.ConstructorBuilder;
+            }
+            else if (context.Visited.TryGetValue(key, out verificationResult))
+            {
+                Debug.Assert(verificationResult.ConstructorBuilder != null);
+                constructorBuilder = verificationResult.ConstructorBuilder;
+            }
+
+            Debug.Assert(constructorBuilder != null);
+
+            var endLabel = il.DefineLabel();
+            var createProxyLabel = il.DefineLabel();
+
+            // If the 'source' value is null, then just return it.
+            il.Emit(OpCodes.Dup);
+            il.Emit(OpCodes.Brfalse_S, endLabel);
+
+            // If the 'source' value isn't a proxy then we need to create one.
+            il.Emit(OpCodes.Dup);
+            il.Emit(OpCodes.Isinst, typeof(ProxyBase));
+            il.Emit(OpCodes.Brfalse_S, createProxyLabel);
+
+            // If the 'source' value is-a proxy then get the wrapped value.
+            il.Emit(OpCodes.Isinst, typeof(ProxyBase));
+            il.EmitCall(OpCodes.Callvirt, typeof(ProxyBase).GetMethod("get_UnderlyingInstanceAsObject"), null);
+            il.Emit(OpCodes.Dup);
+            il.Emit(OpCodes.Isinst, targetType);
+            il.Emit(OpCodes.Brtrue_S, endLabel);
+
+            il.MarkLabel(createProxyLabel);
+
+            // Create the proxy.
+            il.Emit(OpCodes.Newobj, constructorBuilder);
+
+            il.MarkLabel(endLabel);
+        }
+
+        private class ProxyBuilderContext
+        {
+            public ProxyBuilderContext(ConverterCache cache, Type targetType, Type sourceType)
+            {
+                Cache = cache;
+
+                Key = new Tuple<Type, Type>(sourceType, targetType);
+                Visited = new Dictionary<Tuple<Type, Type>, VerificationResult>();
+            }
+
+            public ConverterCache Cache { get; }
+
+            public Tuple<Type, Type> Key { get; }
+
+            public Type SourceType => Key.Item1;
+
+            public Type TargetType => Key.Item2;
+
+            public Dictionary<Tuple<Type, Type>, VerificationResult> Visited { get; }
+        }
+
+        private class VerificationResult
+        {
+            public ConstructorBuilder ConstructorBuilder { get; set; }
+
+            public IEnumerable<KeyValuePair<PropertyInfo, PropertyInfo>> Mappings { get; set; }
+
+            public TypeBuilder TypeBuilder { get; set; }
+        }
+    }
+}
+#endif
--- a/src/Microsoft.Framework.Notification/Internal/ConverterCache.cs
+++ b/src/Microsoft.Framework.Notification/Internal/ConverterCache.cs
@ -0,0 +1,16 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+#if NET45 || DNX451 || DNXCORE50
+
+using System;
+using System.Collections.Concurrent;
+
+namespace Microsoft.Framework.Notification.Internal
+{
+    public class ConverterCache : ConcurrentDictionary<Tuple<Type, Type>, CacheResult>
+    {
+    }
+}
+
+#endif
--- a/src/Microsoft.Framework.Notification/Internal/ProxyBase.cs
+++ b/src/Microsoft.Framework.Notification/Internal/ProxyBase.cs
@ -0,0 +1,27 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+#if NET45 || DNX451 || DNXCORE50
+
+using System;
+
+namespace Microsoft.Framework.Notification.Internal
+{
+    public abstract class ProxyBase
+    {
+        public readonly Type WrappedType;
+
+        protected ProxyBase(Type wrappedType)
+        {
+            WrappedType = wrappedType;
+        }
+
+        // Used by reflection, don't rename.
+        public abstract object UnderlyingInstanceAsObject
+        {
+            get;
+        }
+    }
+}
+
+#endif
--- a/src/Microsoft.Framework.Notification/Internal/ProxyBaseOfT.cs
+++ b/src/Microsoft.Framework.Notification/Internal/ProxyBaseOfT.cs
@ -0,0 +1,39 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+#if NET45 || DNX451 || DNXCORE50
+
+using Microsoft.Framework.Internal;
+
+namespace Microsoft.Framework.Notification.Internal
+{
+    public class ProxyBase<T> : ProxyBase where T : class
+    {
+        // Used by reflection, don't rename.
+        public readonly T Instance;
+
+        public ProxyBase([NotNull] T instance)
+            : base(typeof(T))
+        {
+            Instance = instance;
+        }
+
+        public T UnderlyingInstance
+        {
+            get
+            {
+                return Instance;
+            }
+        }
+
+        public override object UnderlyingInstanceAsObject
+        {
+            get
+            {
+                return Instance;
+            }
+        }
+    }
+}
+
+#endif
--- a/src/Microsoft.Framework.Notification/Microsoft.Framework.Notification.xproj
+++ b/src/Microsoft.Framework.Notification/Microsoft.Framework.Notification.xproj
@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="__ToolsVersion__" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\AspNet\Microsoft.Web.AspNet.Props" Condition="'$(VSToolsPath)' != ''" />
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>4c660d0b-32c5-43d0-899d-73ff60352172</ProjectGuid>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x86'" Label="Configuration">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x86'" Label="Configuration">
+  </PropertyGroup>
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <AssemblyName>Microsoft.Framework.Notification</AssemblyName>
+  </PropertyGroup>
+  <PropertyGroup Label="Configuration">
+    <RootNamespace>Microsoft.Framework.Notification</RootNamespace>
+  </PropertyGroup>
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <ProduceOutputsOnBuild>True</ProduceOutputsOnBuild>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\AspNet\Microsoft.Web.AspNet.targets" Condition="'$(VSToolsPath)' != ''" />
+</Project>
--- a/src/Microsoft.Framework.Notification/NotificationNameAttribute.cs
+++ b/src/Microsoft.Framework.Notification/NotificationNameAttribute.cs
@ -0,0 +1,17 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+
+namespace Microsoft.Framework.Notification
+{
+    public class NotificationNameAttribute : Attribute
+    {
+        public NotificationNameAttribute(string name)
+        {
+            Name = name;
+        }
+
+        public string Name { get; }
+    }
+}
--- a/src/Microsoft.Framework.Notification/Notifier.cs
+++ b/src/Microsoft.Framework.Notification/Notifier.cs
@ -0,0 +1,109 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Reflection;
+
+namespace Microsoft.Framework.Notification
+{
+    public class Notifier : INotifier
+    {
+        private readonly ConcurrentDictionary<string, List<Entry>> _notificationNames = new ConcurrentDictionary<string, List<Entry>>(StringComparer.Ordinal);
+        private readonly INotifyParameterAdapter _parameterAdapter;
+
+        public Notifier(INotifyParameterAdapter parameterAdapter)
+        {
+            _parameterAdapter = parameterAdapter;
+        }
+
+        public void EnlistTarget(object target)
+        {
+            var typeInfo = target.GetType().GetTypeInfo();
+
+            var methodInfos = typeInfo.DeclaredMethods;
+
+            foreach (var methodInfo in methodInfos)
+            {
+                var notificationNameAttribute = methodInfo.GetCustomAttribute<NotificationNameAttribute>();
+                if (notificationNameAttribute != null)
+                {
+                    Enlist(notificationNameAttribute.Name, target, methodInfo);
+                }
+            }
+        }
+
+        private void Enlist(string notificationName, object target, MethodInfo methodInfo)
+        {
+            var entries = _notificationNames.GetOrAdd(
+                notificationName,
+                _ => new List<Entry>());
+            entries.Add(new Entry(target, methodInfo));
+        }
+
+        public bool ShouldNotify(string notificationName)
+        {
+            return _notificationNames.ContainsKey(notificationName);
+        }
+
+        public void Notify(string notificationName, object parameters)
+        {
+            List<Entry> entries;
+            if (_notificationNames.TryGetValue(notificationName, out entries))
+            {
+                foreach (var entry in entries)
+                {
+                    entry.Send(parameters, _parameterAdapter);
+                }
+            }
+        }
+
+        internal class Entry
+        {
+            private MethodInfo _methodInfo;
+            private object _target;
+
+            public Entry(object target, MethodInfo methodInfo)
+            {
+                _target = target;
+                _methodInfo = methodInfo;
+            }
+
+            internal void Send(object parameters, INotifyParameterAdapter parameterAdapter)
+            {
+                var methodParameterInfos = _methodInfo.GetParameters();
+                var methodParameterCount = methodParameterInfos.Length;
+                var methodParameterValues = new object[methodParameterCount];
+
+                var objectTypeInfo = parameters.GetType().GetTypeInfo();
+                for (var index = 0; index != methodParameterCount; ++index)
+                {
+                    var objectPropertyInfo = objectTypeInfo.GetDeclaredProperty(methodParameterInfos[index].Name);
+                    if (objectPropertyInfo == null)
+                    {
+                        continue;
+                    }
+
+                    var objectPropertyValue = objectPropertyInfo.GetValue(parameters);
+                    if (objectPropertyValue == null)
+                    {
+                        continue;
+                    }
+
+                    var methodParameterInfo = methodParameterInfos[index];
+                    if (methodParameterInfo.ParameterType.GetTypeInfo().IsAssignableFrom(objectPropertyInfo.PropertyType.GetTypeInfo()))
+                    {
+                        methodParameterValues[index] = objectPropertyValue;
+                    }
+                    else
+                    {
+                        methodParameterValues[index] = parameterAdapter.Adapt(objectPropertyValue, methodParameterInfo.ParameterType);
+                    }
+                }
+
+                _methodInfo.Invoke(_target, methodParameterValues);
+            }
+        }
+    }
+}
--- a/src/Microsoft.Framework.Notification/NotifierParameterAdapter.cs
+++ b/src/Microsoft.Framework.Notification/NotifierParameterAdapter.cs
@ -0,0 +1,28 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+
+namespace Microsoft.Framework.Notification
+{
+    public class NotifierParameterAdapter : INotifyParameterAdapter
+    {
+#if NET45 || DNX451 || DNXCORE50
+        private readonly Internal.ConverterCache _cache = new Internal.ConverterCache();
+#endif
+
+        public object Adapt(object inputParameter, Type outputType)
+        {
+            if (inputParameter == null)
+            {
+                return null;
+            }
+
+#if NET45 || DNX451 || DNXCORE50
+            return Internal.Converter.Convert(_cache, outputType, inputParameter.GetType(), inputParameter);
+#else
+            return inputParameter;
+#endif
+        }
+    }
+}
--- a/src/Microsoft.Framework.Notification/Properties/Resources.Designer.cs
+++ b/src/Microsoft.Framework.Notification/Properties/Resources.Designer.cs
@ -0,0 +1,94 @@
+// <auto-generated />
+namespace Microsoft.Framework.Notification
+{
+    using System.Globalization;
+    using System.Reflection;
+    using System.Resources;
+
+    internal static class Resources
+    {
+        private static readonly ResourceManager _resourceManager
+            = new ResourceManager("Microsoft.Framework.Notification.Resources", typeof(Resources).GetTypeInfo().Assembly);
+
+        /// <summary>
+        /// The property '{0}' on type '{1}' must define a getter to support proxy generation. 
+        /// </summary>
+        internal static string Converter_PropertyMustHaveGetter
+        {
+            get { return GetString("Converter_PropertyMustHaveGetter"); }
+        }
+
+        /// <summary>
+        /// The property '{0}' on type '{1}' must define a getter to support proxy generation. 
+        /// </summary>
+        internal static string FormatConverter_PropertyMustHaveGetter(object p0, object p1)
+        {
+            return string.Format(CultureInfo.CurrentCulture, GetString("Converter_PropertyMustHaveGetter"), p0, p1);
+        }
+
+        /// <summary>
+        /// The property '{0}' on type '{1}' must not use index parameters to support proxy generation.
+        /// </summary>
+        internal static string Converter_PropertyMustNotHaveIndexParameters
+        {
+            get { return GetString("Converter_PropertyMustNotHaveIndexParameters"); }
+        }
+
+        /// <summary>
+        /// The property '{0}' on type '{1}' must not use index parameters to support proxy generation.
+        /// </summary>
+        internal static string FormatConverter_PropertyMustNotHaveIndexParameters(object p0, object p1)
+        {
+            return string.Format(CultureInfo.CurrentCulture, GetString("Converter_PropertyMustNotHaveIndexParameters"), p0, p1);
+        }
+
+        /// <summary>
+        /// The property '{0}' on type '{1}' must not define a setter to support proxy generation.
+        /// </summary>
+        internal static string Converter_PropertyMustNotHaveSetter
+        {
+            get { return GetString("Converter_PropertyMustNotHaveSetter"); }
+        }
+
+        /// <summary>
+        /// The property '{0}' on type '{1}' must not define a setter to support proxy generation.
+        /// </summary>
+        internal static string FormatConverter_PropertyMustNotHaveSetter(object p0, object p1)
+        {
+            return string.Format(CultureInfo.CurrentCulture, GetString("Converter_PropertyMustNotHaveSetter"), p0, p1);
+        }
+
+        /// <summary>
+        /// Type '{0}' must be an interface in order to support proxy generation from source type '{1}'.
+        /// </summary>
+        internal static string Converter_TypeMustBeInterface
+        {
+            get { return GetString("Converter_TypeMustBeInterface"); }
+        }
+
+        /// <summary>
+        /// Type '{0}' must be an interface in order to support proxy generation from source type '{1}'.
+        /// </summary>
+        internal static string FormatConverter_TypeMustBeInterface(object p0, object p1)
+        {
+            return string.Format(CultureInfo.CurrentCulture, GetString("Converter_TypeMustBeInterface"), p0, p1);
+        }
+
+        private static string GetString(string name, params string[] formatterNames)
+        {
+            var value = _resourceManager.GetString(name);
+
+            System.Diagnostics.Debug.Assert(value != null);
+
+            if (formatterNames != null)
+            {
+                for (var i = 0; i < formatterNames.Length; i++)
+                {
+                    value = value.Replace("{" + formatterNames[i] + "}", "{" + i + "}");
+                }
+            }
+
+            return value;
+        }
+    }
+}
--- a/src/Microsoft.Framework.Notification/Resources.resx
+++ b/src/Microsoft.Framework.Notification/Resources.resx
@ -0,0 +1,132 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="Converter_PropertyMustHaveGetter" xml:space="preserve">
+    <value>The property '{0}' on type '{1}' must define a getter to support proxy generation. </value>
+  </data>
+  <data name="Converter_PropertyMustNotHaveIndexParameters" xml:space="preserve">
+    <value>The property '{0}' on type '{1}' must not use index parameters to support proxy generation.</value>
+  </data>
+  <data name="Converter_PropertyMustNotHaveSetter" xml:space="preserve">
+    <value>The property '{0}' on type '{1}' must not define a setter to support proxy generation.</value>
+  </data>
+  <data name="Converter_TypeMustBeInterface" xml:space="preserve">
+    <value>Type '{0}' must be an interface in order to support proxy generation from source type '{1}'.</value>
+  </data>
+</root>
--- a/src/Microsoft.Framework.Notification/project.json
+++ b/src/Microsoft.Framework.Notification/project.json
@ -0,0 +1,57 @@
+{
+    "version": "1.0.0-*",
+    "description": "Logging infrastructure.",
+    "dependencies": {
+        "Microsoft.Framework.DependencyInjection.Interfaces": "1.0.0-*",
+        "Microsoft.Framework.NotNullAttribute.Internal": { "version": "1.0.0-*", "type" : "build" },
+        "System.Runtime": "4.0.20-beta-*"
+    },
+    "compilationOptions": {
+        "define": [
+            "TRACE"
+        ]
+    },
+    "frameworks": {
+        "net45": {
+            "frameworkAssemblies": {
+                "System.Linq": "",
+                "System.Collections.Concurrent": ""
+            }
+        },
+        "dnx451": {
+            "frameworkAssemblies": {
+                "System.Linq": "",
+                "System.Collections.Concurrent": ""
+            }
+        },
+        "dnxcore50": {
+            "dependencies": {
+                "System.Collections.Concurrent": "4.0.10-beta-*",
+                "System.Collections": "4.0.10-beta-*",
+                "System.Diagnostics.Debug": "4.0.10-beta-*",
+                "System.Globalization": "4.0.10-beta-*",
+                "System.Linq": "4.0.0-beta-*",
+                "System.Threading": "4.0.10-beta-*",
+                "System.Reflection.Emit": "4.0.0-beta-*",
+                "System.Reflection.Extensions": "4.0.0-beta-*",
+                "System.Reflection.TypeExtensions": "4.0.0-beta-*",
+                "System.Resources.ResourceManager": "4.0.0-beta-*",
+                "System.Runtime.Extensions": "4.0.10-beta-*"
+            }
+        },
+        ".NETPortable,Version=v4.6,Profile=Profile151": {
+            "frameworkAssemblies": {
+                "System.Collections": "",
+                "System.Collections.Concurrent": "",
+                "System.Diagnostics.Debug": "",
+                "System.Globalization": "",
+                "System.Reflection": "",
+                "System.Reflection.Extensions": "",
+                "System.Resources.ResourceManager": "",
+                "System.Runtime.Extensions": "",
+                "System.Linq": "",
+                "System.Threading": ""
+            }
+        }
+    }
+}
--- a/test/Microsoft.Framework.Notification.Test/Microsoft.Framework.Notification.Test.xproj
+++ b/test/Microsoft.Framework.Notification.Test/Microsoft.Framework.Notification.Test.xproj
@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\AspNet\Microsoft.Web.AspNet.Props" Condition="'$(VSToolsPath)' != ''" />
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>51e95e1c-fe88-4daf-8e03-3fc3153a03af</ProjectGuid>
+    <RootNamespace>Microsoft.Framework.Notification.Test</RootNamespace>
+    <BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'=='' ">..\..\artifacts\obj\$(MSBuildProjectName)</BaseIntermediateOutputPath>
+    <OutputPath Condition="'$(OutputPath)'=='' ">..\..\artifacts\bin\$(MSBuildProjectName)\</OutputPath>
+  </PropertyGroup>
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <AssemblyName>Microsoft.Framework.Notification.Test</AssemblyName>
+  </PropertyGroup>
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+  </PropertyGroup>
+  <ItemGroup>
+    <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
+  </ItemGroup>
+  <Import Project="$(VSToolsPath)\AspNet\Microsoft.Web.AspNet.targets" Condition="'$(VSToolsPath)' != ''" />
+</Project>
--- a/test/Microsoft.Framework.Notification.Test/NotifierParameterAdapterTest.cs
+++ b/test/Microsoft.Framework.Notification.Test/NotifierParameterAdapterTest.cs
@ -0,0 +1,291 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using Xunit;
+
+namespace Microsoft.Framework.Notification
+{
+    public class NotifierParameterAdapterTest
+    {
+        [Fact]
+        public void Adapt_Null()
+        {
+            // Arrange
+            var value = (object)null;
+
+            var adapter = new NotifierParameterAdapter();
+
+            // Act
+            var result = adapter.Adapt(value, typeof(string));
+
+            // Assert
+            Assert.Null(result);
+        }
+
+        public static TheoryData<object, Type> Identity_ReferenceTypes_Data
+        {
+            get
+            {
+                return new TheoryData<object, Type>()
+                {
+                    { "Hello, world!", typeof(string) },
+                    { new Person(), typeof(Person) },
+                };
+            }
+        }
+
+        [Theory]
+        [MemberData(nameof(Identity_ReferenceTypes_Data))]
+        public void Adapt_Identity_ReferenceTypes(object value, Type outputType)
+        {
+            // Arrange
+            var adapter = new NotifierParameterAdapter();
+
+            // Act
+            var result = adapter.Adapt(value, outputType);
+
+            // Assert
+            Assert.IsType(outputType, result);
+            Assert.Same(value, result);
+        }
+
+        public static TheoryData<object, Type> Identity_ValueTypes_Data
+        {
+            get
+            {
+                return new TheoryData<object, Type>()
+                {
+                    { 19, typeof(int) },
+                    { new SomeValueType(17), typeof(SomeValueType) },
+                };
+            }
+        }
+
+        [Theory]
+        [MemberData(nameof(Identity_ValueTypes_Data))]
+        public void Adapt_Identity_ValueTypes(object value, Type outputType)
+        {
+            // Arrange
+            var adapter = new NotifierParameterAdapter();
+
+            // Act
+            var result = adapter.Adapt(value, outputType);
+
+            // Assert
+            Assert.IsType(outputType, result);
+            Assert.Same(value, result); // This works because of boxing
+        }
+
+        public static TheoryData<object, Type> Assignable_Data
+        {
+            get
+            {
+                return new TheoryData<object, Type>()
+                {
+                    { 5, typeof(IConvertible) }, // Interface assignment
+                    { new DerivedPerson(), typeof(Person) }, // Base-class assignment
+                    { 5.8m, typeof(decimal?) }, // value-type to nullable assignment
+                };
+            }
+        }
+
+        [Theory]
+        [MemberData(nameof(Assignable_Data))]
+        public void Adapt_Assignable(object value, Type outputType)
+        {
+            // Arrange
+            var adapter = new NotifierParameterAdapter();
+
+            // Act
+            var result = adapter.Adapt(value, outputType);
+
+            // Assert
+            Assert.IsType(value.GetType(), result);
+            Assert.IsAssignableFrom(outputType, result);
+            Assert.Same(value, result);
+        }
+
+        [Fact]
+        public void Adapt_Proxy_DestinationIsNotInterface()
+        {
+            // Arrange
+            var value = new Person();
+            var outputType = typeof(string);
+
+            var expectedMessage = string.Format(
+                "Type '{0}' must be an interface in order to support proxy generation from source type '{1}'.",
+                outputType.FullName,
+                value.GetType().FullName);
+
+            var adapter = new NotifierParameterAdapter();
+
+            // Act
+            var exception = Assert.Throws<InvalidOperationException>(() => adapter.Adapt(value, outputType));
+
+            // Assert
+            Assert.Equal(expectedMessage, exception.Message);
+        }
+
+        [Fact]
+        public void Adapt_Proxy_InvalidProperty_DestinationIsNotInterface()
+        {
+            // Arrange
+            var value = new Person();
+            var outputType = typeof(IBadPerson);
+
+            var expectedMessage = string.Format(
+                "Type '{0}' must be an interface in order to support proxy generation from source type '{1}'.",
+                typeof(string),
+                typeof(Address).FullName);
+
+            var adapter = new NotifierParameterAdapter();
+
+            // Act
+            var exception = Assert.Throws<InvalidOperationException>(() => adapter.Adapt(value, outputType));
+
+            // Assert
+            Assert.Equal(expectedMessage, exception.Message);
+        }
+
+        [Fact]
+        public void Adapt_Proxy()
+        {
+            // Arrange
+            var value = new Person()
+            {
+                Address = new Address()
+                {
+                    City = "Redmond",
+                    State = "WA",
+                    Zip = 98002,
+                },
+                FirstName = "Bill",
+                LastName = "Gates",
+            };
+
+            var outputType = typeof(IPerson);
+
+            var adapter = new NotifierParameterAdapter();
+
+            // Act
+            var result = adapter.Adapt(value, outputType);
+
+            // Assert
+            var person = Assert.IsAssignableFrom<IPerson>(result);
+            Assert.Same(value.Address.City, person.Address.City);
+            Assert.Same(value.Address.State, person.Address.State);
+            Assert.Equal(value.Address.Zip, person.Address.Zip);
+
+            // IPerson doesn't define the FirstName property.
+            Assert.Same(value.LastName, person.LastName);
+        }
+
+        [Fact]
+        public void Adapt_Proxy_WithTypeCycle()
+        {
+            // Arrange
+            var value = new C1()
+            {
+                C2 = new C2()
+                {
+                    C1 = new C1()
+                    {
+                        C2 = new C2(),
+                        Tag = "C1.C2.C1",
+                    },
+                    Tag = "C1.C2",
+                },
+                Tag = "C1",
+            };
+
+            var outputType = typeof(IC1);
+
+            var adapter = new NotifierParameterAdapter();
+
+            // Act
+            var result = adapter.Adapt(value, outputType);
+
+            // Assert
+            var c1 = Assert.IsAssignableFrom<IC1>(result);
+            Assert.Equal(value.C2.Tag, c1.C2.Tag);
+            Assert.Equal(value.C2.C1.Tag, c1.C2.C1.Tag);
+            Assert.Equal(value.C2.C1.C2.Tag, c1.C2.C1.C2.Tag);
+            Assert.Null(value.C2.C1.C2.C1);
+        }
+
+        public interface IC1
+        {
+            IC2 C2 { get; }
+            string Tag { get; }
+        }
+
+        public interface IC2
+        {
+            IC1 C1 { get; }
+            string Tag { get; }
+        }
+
+        public class C1
+        {
+            public C2 C2 { get; set; }
+            public string Tag { get; set; }
+        }
+
+        public class C2
+        {
+            public C1 C1 { get; set; }
+            public string Tag { get; set; }
+        }
+
+        public interface IPerson
+        {
+            string FirstName { get; }
+            string LastName { get; }
+            IAddress Address { get; }
+        }
+
+        public interface IAddress
+        {
+            string City { get; }
+            string State { get; }
+            int Zip { get; }
+        }
+
+        public class Person
+        {
+            public string FirstName { get; set; }
+            public string LastName { get; set; }
+            public Address Address { get; set; }
+        }
+
+        public interface IBadPerson
+        {
+            string FirstName { get; }
+            string LastName { get; }
+            string Address { get; } // doesn't match with Person
+        }
+
+        public class DerivedPerson : Person
+        {
+            public double CoolnessFactor { get; set; }
+        }
+
+        public class Address
+        {
+            public string City { get; set; }
+            public string State { get; set; }
+            public int Zip { get; set; }
+        }
+
+        public class SomeValueType
+        {
+            public SomeValueType(int value)
+            {
+                Value = value;
+            }
+
+            public int Value { get; private set; }
+        }
+    }
+}
--- a/test/Microsoft.Framework.Notification.Test/NotifierTest.cs
+++ b/test/Microsoft.Framework.Notification.Test/NotifierTest.cs
@ -0,0 +1,206 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using Xunit;
+
+namespace Microsoft.Framework.Notification
+{
+    public class NotifierTest
+    {
+        INotifier NewNotifier()
+        {
+            return new Notifier(new NotifierParameterAdapter());
+        }
+
+        public class OneTarget
+        {
+            public int OneCallCount { get; private set; }
+
+            [NotificationName("One")]
+            public void One()
+            {
+                ++OneCallCount;
+            }
+        }
+
+        [Fact]
+        public void ShouldNotifyBecomesTrueAfterEnlisting()
+        {
+            var notifier = NewNotifier();
+
+            Assert.False(notifier.ShouldNotify("One"));
+            Assert.False(notifier.ShouldNotify("Two"));
+
+            notifier.EnlistTarget(new OneTarget());
+
+            Assert.True(notifier.ShouldNotify("One"));
+            Assert.False(notifier.ShouldNotify("Two"));
+        }
+
+        [Fact]
+        public void CallingNotifyWillInvokeMethod()
+        {
+            var notifier = NewNotifier();
+            var target = new OneTarget();
+
+            notifier.EnlistTarget(target);
+
+            Assert.Equal(0, target.OneCallCount);
+            notifier.Notify("One", new { });
+            Assert.Equal(1, target.OneCallCount);
+        }
+
+        [Fact]
+        public void CallingNotifyForNonEnlistedNameIsHarmless()
+        {
+            var notifier = new Notifier(new NotifierParameterAdapter());
+            var target = new OneTarget();
+
+            notifier.EnlistTarget(target);
+
+            Assert.Equal(0, target.OneCallCount);
+            notifier.Notify("Two", new { });
+            Assert.Equal(0, target.OneCallCount);
+        }
+
+        private class TwoTarget
+        {
+            public string Alpha { get; private set; }
+            public string Beta { get; private set; }
+            public int Delta { get; private set; }
+
+            [NotificationName("Two")]
+            public void Two(string alpha, string beta, int delta)
+            {
+                Alpha = alpha;
+                Beta = beta;
+                Delta = delta;
+            }
+        }
+
+        [Fact]
+        public void ParametersWillSplatFromObjectByName()
+        {
+            var notifier = NewNotifier();
+            var target = new TwoTarget();
+
+            notifier.EnlistTarget(target);
+
+            notifier.Notify("Two", new { alpha = "ALPHA", beta = "BETA", delta = -1 });
+
+            Assert.Equal("ALPHA", target.Alpha);
+            Assert.Equal("BETA", target.Beta);
+            Assert.Equal(-1, target.Delta);
+        }
+
+        [Fact]
+        public void ExtraParametersAreHarmless()
+        {
+            var notifier = NewNotifier();
+            var target = new TwoTarget();
+
+            notifier.EnlistTarget(target);
+
+            notifier.Notify("Two", new { alpha = "ALPHA", beta = "BETA", delta = -1, extra = this });
+
+            Assert.Equal("ALPHA", target.Alpha);
+            Assert.Equal("BETA", target.Beta);
+            Assert.Equal(-1, target.Delta);
+        }
+
+        [Fact]
+        public void MissingParametersArriveAsNull()
+        {
+            var notifier = NewNotifier();
+            var target = new TwoTarget();
+
+            notifier.EnlistTarget(target);
+            notifier.Notify("Two", new { alpha = "ALPHA", delta = -1 });
+
+            Assert.Equal("ALPHA", target.Alpha);
+            Assert.Null(target.Beta);
+            Assert.Equal(-1, target.Delta);
+        }
+
+        [Fact]
+        public void NotificationCanDuckType()
+        {
+            var notifier = NewNotifier();
+            var target = new ThreeTarget();
+
+            notifier.EnlistTarget(target);
+            notifier.Notify("Three", new
+            {
+                person = new Person
+                {
+                    FirstName = "Alpha",
+                    Address = new Address
+                    {
+                        City = "Beta",
+                        State = "Gamma",
+                        Zip = 98028
+                    }
+                }
+            });
+
+            Assert.Equal("Alpha", target.Person.FirstName);
+            Assert.Equal("Beta", target.Person.Address.City);
+            Assert.Equal("Gamma", target.Person.Address.State);
+            Assert.Equal(98028, target.Person.Address.Zip);
+        }
+
+        public class ThreeTarget
+        {
+            public IPerson Person { get; private set; }
+
+            [NotificationName("Three")]
+            public void Three(IPerson person)
+            {
+                Person = person;
+            }
+        }
+
+        public interface IPerson
+        {
+            string FirstName { get; }
+            string LastName { get; }
+            IAddress Address { get; }
+        }
+
+        public interface IAddress
+        {
+            string City { get; }
+            string State { get; }
+            int Zip { get; }
+        }
+
+        public class Person
+        {
+            public string FirstName { get; set; }
+            public string LastName { get; set; }
+            public Address Address { get; set; }
+        }
+
+        public class DerivedPerson : Person
+        {
+            public double CoolnessFactor { get; set; }
+        }
+
+        public class Address
+        {
+            public string City { get; set; }
+            public string State { get; set; }
+            public int Zip { get; set; }
+        }
+
+        public class SomeValueType
+        {
+            public SomeValueType(int value)
+            {
+                Value = value;
+            }
+
+            public int Value { get; private set; }
+        }
+    }
+}
--- a/test/Microsoft.Framework.Notification.Test/project.json
+++ b/test/Microsoft.Framework.Notification.Test/project.json
@ -0,0 +1,14 @@
+{
+    "dependencies": {
+        "Microsoft.Framework.Notification": "1.0.0-*",
+        "xunit.runner.aspnet": "2.0.0-aspnet-*"
+    },
+    "commands": {
+        "run": "xunit.runner.aspnet",
+        "test": "xunit.runner.aspnet"
+    },
+    "frameworks": {
+        "dnx451": { },
+        "dnxcore50": { }
+    }
+}