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Initial Client/Server Communication

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#1
Followed the MagicOnion quickstart guide, borrowing code from the chat sample app to get something working
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hyperion51 2020-02-26 17:48:40 +00:00
commit a0c8dbee72
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Assets/Scripts/MessagePack/Resolvers/DynamicUnionResolver.cs Normal file
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// Copyright (c) All contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
#if !(UNITY_2018_3_OR_NEWER && NET_STANDARD_2_0)
using System;
using System.Buffers;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Reflection.Emit;
using System.Text.RegularExpressions;
using System.Threading;
using MessagePack.Formatters;
using MessagePack.Internal;
#pragma warning disable SA1403 // File may only contain a single namespace
#pragma warning disable SA1509 // Opening braces should not be preceded by blank line
namespace MessagePack.Resolvers
{
/// <summary>
/// UnionResolver by dynamic code generation.
/// </summary>
public sealed class DynamicUnionResolver : IFormatterResolver
{
private const string ModuleName = "MessagePack.Resolvers.DynamicUnionResolver";
/// <summary>
/// The singleton instance that can be used.
/// </summary>
public static readonly DynamicUnionResolver Instance;
/// <summary>
/// A <see cref="MessagePackSerializerOptions"/> instance with this formatter pre-configured.
/// </summary>
public static readonly MessagePackSerializerOptions Options;
private static readonly DynamicAssembly DynamicAssembly;
#if !UNITY_2018_3_OR_NEWER
private static readonly Regex SubtractFullNameRegex = new Regex(@", Version=\d+.\d+.\d+.\d+, Culture=\w+, PublicKeyToken=\w+", RegexOptions.Compiled);
#else
private static readonly Regex SubtractFullNameRegex = new Regex(@", Version=\d+.\d+.\d+.\d+, Culture=\w+, PublicKeyToken=\w+");
#endif
private static int nameSequence = 0;
static DynamicUnionResolver()
{
Instance = new DynamicUnionResolver();
Options = new MessagePackSerializerOptions(Instance);
DynamicAssembly = new DynamicAssembly(ModuleName);
}
private DynamicUnionResolver()
{
}
#if NETFRAMEWORK
public AssemblyBuilder Save()
{
return DynamicAssembly.Save();
}
#endif
public IMessagePackFormatter<T> GetFormatter<T>()
{
return FormatterCache<T>.Formatter;
}
private static class FormatterCache<T>
{
public static readonly IMessagePackFormatter<T> Formatter;
static FormatterCache()
{
TypeInfo ti = typeof(T).GetTypeInfo();
if (ti.IsNullable())
{
ti = ti.GenericTypeArguments[0].GetTypeInfo();
var innerFormatter = DynamicUnionResolver.Instance.GetFormatterDynamic(ti.AsType());
if (innerFormatter == null)
{
return;
}
Formatter = (IMessagePackFormatter<T>)Activator.CreateInstance(typeof(StaticNullableFormatter<>).MakeGenericType(ti.AsType()), new object[] { innerFormatter });
return;
}
TypeInfo formatterTypeInfo = BuildType(typeof(T));
if (formatterTypeInfo == null)
{
return;
}
Formatter = (IMessagePackFormatter<T>)Activator.CreateInstance(formatterTypeInfo.AsType());
}
}
private static TypeInfo BuildType(Type type)
{
TypeInfo ti = type.GetTypeInfo();
// order by key(important for use jump-table of switch)
UnionAttribute[] unionAttrs = ti.GetCustomAttributes<UnionAttribute>().OrderBy(x => x.Key).ToArray();
if (unionAttrs.Length == 0)
{
return null;
}
if (!ti.IsInterface && !ti.IsAbstract)
{
throw new MessagePackDynamicUnionResolverException("Union can only be interface or abstract class. Type:" + type.Name);
}
var checker1 = new HashSet<int>();
var checker2 = new HashSet<Type>();
foreach (UnionAttribute item in unionAttrs)
{
if (!checker1.Add(item.Key))
{
throw new MessagePackDynamicUnionResolverException("Same union key has found. Type:" + type.Name + " Key:" + item.Key);
}
if (!checker2.Add(item.SubType))
{
throw new MessagePackDynamicUnionResolverException("Same union subType has found. Type:" + type.Name + " SubType: " + item.SubType);
}
}
Type formatterType = typeof(IMessagePackFormatter<>).MakeGenericType(type);
TypeBuilder typeBuilder = DynamicAssembly.DefineType("MessagePack.Formatters." + SubtractFullNameRegex.Replace(type.FullName, string.Empty).Replace(".", "_") + "Formatter" + +Interlocked.Increment(ref nameSequence), TypeAttributes.Public | TypeAttributes.Sealed, null, new[] { formatterType });
FieldBuilder typeToKeyAndJumpMap = null; // Dictionary<RuntimeTypeHandle, KeyValuePair<int, int>>
FieldBuilder keyToJumpMap = null; // Dictionary<int, int>
// create map dictionary
{
ConstructorBuilder method = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, Type.EmptyTypes);
typeToKeyAndJumpMap = typeBuilder.DefineField("typeToKeyAndJumpMap", typeof(Dictionary<RuntimeTypeHandle, KeyValuePair<int, int>>), FieldAttributes.Private | FieldAttributes.InitOnly);
keyToJumpMap = typeBuilder.DefineField("keyToJumpMap", typeof(Dictionary<int, int>), FieldAttributes.Private | FieldAttributes.InitOnly);
ILGenerator il = method.GetILGenerator();
BuildConstructor(type, unionAttrs, method, typeToKeyAndJumpMap, keyToJumpMap, il);
}
{
MethodBuilder method = typeBuilder.DefineMethod(
"Serialize",
MethodAttributes.Public | MethodAttributes.Final | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.NewSlot,
null,
new Type[] { typeof(MessagePackWriter).MakeByRefType(), type, typeof(MessagePackSerializerOptions) });
ILGenerator il = method.GetILGenerator();
BuildSerialize(type, unionAttrs, method, typeToKeyAndJumpMap, il);
}
{
MethodBuilder method = typeBuilder.DefineMethod(
"Deserialize",
MethodAttributes.Public | MethodAttributes.Final | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.NewSlot,
type,
new Type[] { refMessagePackReader, typeof(MessagePackSerializerOptions) });
ILGenerator il = method.GetILGenerator();
BuildDeserialize(type, unionAttrs, method, keyToJumpMap, il);
}
return typeBuilder.CreateTypeInfo();
}
private static void BuildConstructor(Type type, UnionAttribute[] infos, ConstructorInfo method, FieldBuilder typeToKeyAndJumpMap, FieldBuilder keyToJumpMap, ILGenerator il)
{
il.EmitLdarg(0);
il.Emit(OpCodes.Call, objectCtor);
{
il.EmitLdarg(0);
il.EmitLdc_I4(infos.Length);
il.Emit(OpCodes.Ldsfld, runtimeTypeHandleEqualityComparer);
il.Emit(OpCodes.Newobj, typeMapDictionaryConstructor);
var index = 0;
foreach (UnionAttribute item in infos)
{
il.Emit(OpCodes.Dup);
il.Emit(OpCodes.Ldtoken, item.SubType);
il.EmitLdc_I4(item.Key);
il.EmitLdc_I4(index);
il.Emit(OpCodes.Newobj, intIntKeyValuePairConstructor);
il.EmitCall(typeMapDictionaryAdd);
index++;
}
il.Emit(OpCodes.Stfld, typeToKeyAndJumpMap);
}
{
il.EmitLdarg(0);
il.EmitLdc_I4(infos.Length);
il.Emit(OpCodes.Newobj, keyMapDictionaryConstructor);
var index = 0;
foreach (UnionAttribute item in infos)
{
il.Emit(OpCodes.Dup);
il.EmitLdc_I4(item.Key);
il.EmitLdc_I4(index);
il.EmitCall(keyMapDictionaryAdd);
index++;
}
il.Emit(OpCodes.Stfld, keyToJumpMap);
}
il.Emit(OpCodes.Ret);
}
// void Serialize([arg:1]MessagePackWriter writer, [arg:2]T value, [arg:3]MessagePackSerializerOptions options);
private static void BuildSerialize(Type type, UnionAttribute[] infos, MethodBuilder method, FieldBuilder typeToKeyAndJumpMap, ILGenerator il)
{
// if(value == null) return WriteNil
Label elseBody = il.DefineLabel();
Label notFoundType = il.DefineLabel();
il.EmitLdarg(2);
il.Emit(OpCodes.Brtrue_S, elseBody);
il.Emit(OpCodes.Br, notFoundType);
il.MarkLabel(elseBody);
// IFormatterResolver resolver = options.Resolver;
LocalBuilder localResolver = il.DeclareLocal(typeof(IFormatterResolver));
il.EmitLdarg(3);
il.EmitCall(getResolverFromOptions);
il.EmitStloc(localResolver);
LocalBuilder keyPair = il.DeclareLocal(typeof(KeyValuePair<int, int>));
il.EmitLoadThis();
il.EmitLdfld(typeToKeyAndJumpMap);
il.EmitLdarg(2);
il.EmitCall(objectGetType);
il.EmitCall(getTypeHandle);
il.EmitLdloca(keyPair);
il.EmitCall(typeMapDictionaryTryGetValue);
il.Emit(OpCodes.Brfalse, notFoundType);
// writer.WriteArrayHeader(2, false);
il.EmitLdarg(1);
il.EmitLdc_I4(2);
il.EmitCall(MessagePackWriterTypeInfo.WriteArrayHeader);
// writer.Write(keyPair.Key)
il.EmitLdarg(1);
il.EmitLdloca(keyPair);
il.EmitCall(intIntKeyValuePairGetKey);
il.EmitCall(MessagePackWriterTypeInfo.WriteInt32);
Label loopEnd = il.DefineLabel();
// switch-case (offset += resolver.GetFormatter.Serialize(with cast)
var switchLabels = infos.Select(x => new { Label = il.DefineLabel(), Attr = x }).ToArray();
il.EmitLdloca(keyPair);
il.EmitCall(intIntKeyValuePairGetValue);
il.Emit(OpCodes.Switch, switchLabels.Select(x => x.Label).ToArray());
il.Emit(OpCodes.Br, loopEnd); // default
foreach (var item in switchLabels)
{
il.MarkLabel(item.Label);
il.EmitLdloc(localResolver);
il.Emit(OpCodes.Call, getFormatterWithVerify.MakeGenericMethod(item.Attr.SubType));
il.EmitLdarg(1);
il.EmitLdarg(2);
if (item.Attr.SubType.GetTypeInfo().IsValueType)
{
il.Emit(OpCodes.Unbox_Any, item.Attr.SubType);
}
else
{
il.Emit(OpCodes.Castclass, item.Attr.SubType);
}
il.EmitLdarg(3);
il.Emit(OpCodes.Callvirt, getSerialize(item.Attr.SubType));
il.Emit(OpCodes.Br, loopEnd);
}
// return;
il.MarkLabel(loopEnd);
il.Emit(OpCodes.Ret);
// else, return WriteNil
il.MarkLabel(notFoundType);
il.EmitLdarg(1);
il.EmitCall(MessagePackWriterTypeInfo.WriteNil);
il.Emit(OpCodes.Ret);
}
// T Deserialize([arg:1]ref MessagePackReader reader, [arg:2]MessagePackSerializerOptions options);
private static void BuildDeserialize(Type type, UnionAttribute[] infos, MethodBuilder method, FieldBuilder keyToJumpMap, ILGenerator il)
{
// if(MessagePackBinary.TryReadNil()) { return null; }
Label falseLabel = il.DefineLabel();
il.EmitLdarg(1);
il.EmitCall(MessagePackReaderTypeInfo.TryReadNil);
il.Emit(OpCodes.Brfalse_S, falseLabel);
il.Emit(OpCodes.Ldnull);
il.Emit(OpCodes.Ret);
il.MarkLabel(falseLabel);
// IFormatterResolver resolver = options.Resolver;
LocalBuilder localResolver = il.DeclareLocal(typeof(IFormatterResolver));
il.EmitLdarg(2);
il.EmitCall(getResolverFromOptions);
il.EmitStloc(localResolver);
// read-array header and validate, reader.ReadArrayHeader() != 2) throw;
Label rightLabel = il.DefineLabel();
var writer = new ArgumentField(il, 1);
writer.EmitLdarg();
il.EmitCall(MessagePackReaderTypeInfo.ReadArrayHeader);
il.EmitLdc_I4(2);
il.Emit(OpCodes.Beq_S, rightLabel);
il.Emit(OpCodes.Ldstr, "Invalid Union data was detected. Type:" + type.FullName);
il.Emit(OpCodes.Newobj, invalidOperationExceptionConstructor);
il.Emit(OpCodes.Throw);
il.MarkLabel(rightLabel);
// read key
LocalBuilder key = il.DeclareLocal(typeof(int));
writer.EmitLdarg();
il.EmitCall(MessagePackReaderTypeInfo.ReadInt32);
il.EmitStloc(key);
// is-sequential don't need else convert key to jump-table value
if (!IsZeroStartSequential(infos))
{
Label endKeyMapGet = il.DefineLabel();
il.EmitLdarg(0);
il.EmitLdfld(keyToJumpMap);
il.EmitLdloc(key);
il.EmitLdloca(key);
il.EmitCall(keyMapDictionaryTryGetValue);
il.Emit(OpCodes.Brtrue_S, endKeyMapGet);
il.EmitLdc_I4(-1);
il.EmitStloc(key);
il.MarkLabel(endKeyMapGet);
}
// switch->read
LocalBuilder result = il.DeclareLocal(type);
Label loopEnd = il.DefineLabel();
il.Emit(OpCodes.Ldnull);
il.EmitStloc(result);
il.Emit(OpCodes.Ldloc, key);
var switchLabels = infos.Select(x => new { Label = il.DefineLabel(), Attr = x }).ToArray();
il.Emit(OpCodes.Switch, switchLabels.Select(x => x.Label).ToArray());
// default
writer.EmitLdarg();
il.EmitCall(MessagePackReaderTypeInfo.Skip);
il.Emit(OpCodes.Br, loopEnd);
foreach (var item in switchLabels)
{
il.MarkLabel(item.Label);
il.EmitLdloc(localResolver);
il.EmitCall(getFormatterWithVerify.MakeGenericMethod(item.Attr.SubType));
il.EmitLdarg(1);
il.EmitLdarg(2);
il.EmitCall(getDeserialize(item.Attr.SubType));
if (item.Attr.SubType.GetTypeInfo().IsValueType)
{
il.Emit(OpCodes.Box, item.Attr.SubType);
}
il.Emit(OpCodes.Stloc, result);
il.Emit(OpCodes.Br, loopEnd);
}
il.MarkLabel(loopEnd);
il.Emit(OpCodes.Ldloc, result);
il.Emit(OpCodes.Ret);
}
private static bool IsZeroStartSequential(UnionAttribute[] infos)
{
for (int i = 0; i < infos.Length; i++)
{
if (infos[i].Key != i)
{
return false;
}
}
return true;
}
#pragma warning disable SA1311 // Static readonly fields should begin with upper-case letter
// EmitInfos...
private static readonly Type refMessagePackReader = typeof(MessagePackReader).MakeByRefType();
private static readonly Type refKvp = typeof(KeyValuePair<int, int>).MakeByRefType();
private static readonly MethodInfo getFormatterWithVerify = typeof(FormatterResolverExtensions).GetRuntimeMethods().First(x => x.Name == "GetFormatterWithVerify");
private static readonly MethodInfo getResolverFromOptions = typeof(MessagePackSerializerOptions).GetRuntimeProperty(nameof(MessagePackSerializerOptions.Resolver)).GetMethod;
private static readonly Func<Type, MethodInfo> getSerialize = t => typeof(IMessagePackFormatter<>).MakeGenericType(t).GetRuntimeMethod("Serialize", new[] { typeof(MessagePackWriter).MakeByRefType(), t, typeof(MessagePackSerializerOptions) });
private static readonly Func<Type, MethodInfo> getDeserialize = t => typeof(IMessagePackFormatter<>).MakeGenericType(t).GetRuntimeMethod("Deserialize", new[] { typeof(MessagePackReader).MakeByRefType(), typeof(MessagePackSerializerOptions) });
private static readonly FieldInfo runtimeTypeHandleEqualityComparer = typeof(RuntimeTypeHandleEqualityComparer).GetRuntimeField("Default");
private static readonly ConstructorInfo intIntKeyValuePairConstructor = typeof(KeyValuePair<int, int>).GetTypeInfo().DeclaredConstructors.First(x => x.GetParameters().Length == 2);
private static readonly ConstructorInfo typeMapDictionaryConstructor = typeof(Dictionary<RuntimeTypeHandle, KeyValuePair<int, int>>).GetTypeInfo().DeclaredConstructors.First(x =>
{
ParameterInfo[] p = x.GetParameters();
return p.Length == 2 && p[0].ParameterType == typeof(int);
});
private static readonly MethodInfo typeMapDictionaryAdd = typeof(Dictionary<RuntimeTypeHandle, KeyValuePair<int, int>>).GetRuntimeMethod("Add", new[] { typeof(RuntimeTypeHandle), typeof(KeyValuePair<int, int>) });
private static readonly MethodInfo typeMapDictionaryTryGetValue = typeof(Dictionary<RuntimeTypeHandle, KeyValuePair<int, int>>).GetRuntimeMethod("TryGetValue", new[] { typeof(RuntimeTypeHandle), refKvp });
private static readonly ConstructorInfo keyMapDictionaryConstructor = typeof(Dictionary<int, int>).GetTypeInfo().DeclaredConstructors.First(x =>
{
ParameterInfo[] p = x.GetParameters();
return p.Length == 1 && p[0].ParameterType == typeof(int);
});
private static readonly MethodInfo keyMapDictionaryAdd = typeof(Dictionary<int, int>).GetRuntimeMethod("Add", new[] { typeof(int), typeof(int) });
private static readonly MethodInfo keyMapDictionaryTryGetValue = typeof(Dictionary<int, int>).GetRuntimeMethod("TryGetValue", new[] { typeof(int), typeof(int).MakeByRefType() });
private static readonly MethodInfo objectGetType = typeof(object).GetRuntimeMethod("GetType", Type.EmptyTypes);
private static readonly MethodInfo getTypeHandle = typeof(Type).GetRuntimeProperty("TypeHandle").GetGetMethod();
private static readonly MethodInfo intIntKeyValuePairGetKey = typeof(KeyValuePair<int, int>).GetRuntimeProperty("Key").GetGetMethod();
private static readonly MethodInfo intIntKeyValuePairGetValue = typeof(KeyValuePair<int, int>).GetRuntimeProperty("Value").GetGetMethod();
private static readonly ConstructorInfo invalidOperationExceptionConstructor = typeof(System.InvalidOperationException).GetTypeInfo().DeclaredConstructors.First(
x =>
{
ParameterInfo[] p = x.GetParameters();
return p.Length == 1 && p[0].ParameterType == typeof(string);
});
private static readonly ConstructorInfo objectCtor = typeof(object).GetTypeInfo().DeclaredConstructors.First(x => x.GetParameters().Length == 0);
#pragma warning restore SA1311 // Static readonly fields should begin with upper-case letter
private static class MessagePackReaderTypeInfo
{
internal static readonly TypeInfo ReaderTypeInfo = typeof(MessagePackReader).GetTypeInfo();
internal static readonly MethodInfo ReadBytes = typeof(MessagePackReader).GetRuntimeMethod(nameof(MessagePackReader.ReadBytes), Type.EmptyTypes);
internal static readonly MethodInfo ReadInt32 = typeof(MessagePackReader).GetRuntimeMethod(nameof(MessagePackReader.ReadInt32), Type.EmptyTypes);
internal static readonly MethodInfo ReadString = typeof(MessagePackReader).GetRuntimeMethod(nameof(MessagePackReader.ReadString), Type.EmptyTypes);
internal static readonly MethodInfo TryReadNil = typeof(MessagePackReader).GetRuntimeMethod(nameof(MessagePackReader.TryReadNil), Type.EmptyTypes);
internal static readonly MethodInfo Skip = typeof(MessagePackReader).GetRuntimeMethod(nameof(MessagePackReader.Skip), Type.EmptyTypes);
internal static readonly MethodInfo ReadArrayHeader = typeof(MessagePackReader).GetRuntimeMethod(nameof(MessagePackReader.ReadArrayHeader), Type.EmptyTypes);
internal static readonly MethodInfo ReadMapHeader = typeof(MessagePackReader).GetRuntimeMethod(nameof(MessagePackReader.ReadMapHeader), Type.EmptyTypes);
}
private static class MessagePackWriterTypeInfo
{
internal static readonly TypeInfo WriterTypeInfo = typeof(MessagePackWriter).GetTypeInfo();
internal static readonly MethodInfo WriteArrayHeader = typeof(MessagePackWriter).GetRuntimeMethod(nameof(MessagePackWriter.WriteArrayHeader), new[] { typeof(int) });
internal static readonly MethodInfo WriteInt32 = typeof(MessagePackWriter).GetRuntimeMethod(nameof(MessagePackWriter.Write), new[] { typeof(int) });
internal static readonly MethodInfo WriteNil = typeof(MessagePackWriter).GetRuntimeMethod(nameof(MessagePackWriter.WriteNil), Type.EmptyTypes);
}
}
}
namespace MessagePack.Internal
{
// RuntimeTypeHandle can embed directly by OpCodes.Ldtoken
// It does not implements IEquatable<T>(but GetHashCode and Equals is implemented) so needs this to avoid boxing.
public class RuntimeTypeHandleEqualityComparer : IEqualityComparer<RuntimeTypeHandle>
{
public static readonly IEqualityComparer<RuntimeTypeHandle> Default = new RuntimeTypeHandleEqualityComparer();
private RuntimeTypeHandleEqualityComparer()
{
}
public bool Equals(RuntimeTypeHandle x, RuntimeTypeHandle y)
{
return x.Equals(y);
}
public int GetHashCode(RuntimeTypeHandle obj)
{
return obj.GetHashCode();
}
}
internal class MessagePackDynamicUnionResolverException : MessagePackSerializationException
{
public MessagePackDynamicUnionResolverException(string message)
: base(message)
{
}
}
}
#endif