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Merge pull request #4 from manups4e/MsgPack_support
Added MsgPack support and removed old BinarySerialization
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270 changes: 270 additions & 0 deletions
270
FxEvents/Shared/EventSubsystem/Serialization/Implementations/MsgPackSerialization.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,270 @@ | ||
| using System; | ||
| using System.Collections; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Linq.Expressions; | ||
| using System.Text; | ||
| using FxEvents.Shared.Diagnostics; | ||
| using FxEvents.Shared.Exceptions; | ||
| using FxEvents.Shared.TypeExtensions; | ||
| using Logger; | ||
| using MsgPack.Serialization; | ||
|
|
||
| namespace FxEvents.Shared.Serialization.Implementations | ||
| { | ||
| public class MsgPackSerialization : ISerialization | ||
| { | ||
| private delegate T ObjectActivator<out T>(); | ||
| private delegate void VoidMethod(); | ||
| private Log logger = new(); | ||
| private MsgPack.Serialization.SerializationContext _context = new(MsgPack.PackerCompatibilityOptions.None) { SerializationMethod = SerializationMethod.Map }; | ||
| public MsgPackSerialization() | ||
| { | ||
| } | ||
|
|
||
| private bool CanCreateInstanceUsingDefaultConstructor(Type t) => t.IsValueType || !t.IsAbstract && t.GetConstructor(Type.EmptyTypes) != null; | ||
| public void Serialize(Type type, object value, SerializationContext context) | ||
| { | ||
| var typeIdentifier = GetTypeIdentifier(type); | ||
| if (typeIdentifier == "System.Collections.Generic.KeyValuePair`2") | ||
| { | ||
| var generics = type.GetGenericArguments(); | ||
| var method = GetType().GetMethod("Serialize", | ||
| new[] { typeof(Type), typeof(object), typeof(SerializationContext) }); | ||
| var instanceParam = Expression.Parameter(typeof(MsgPackSerialization), "instance"); | ||
| var typeParam = Expression.Parameter(typeof(Type), "type"); | ||
| var contextParam = Expression.Parameter(typeof(SerializationContext), "context"); | ||
| var pairParam = Expression.Parameter(type, "pair"); | ||
| var valueParam = Expression.Parameter(typeof(object), "value"); | ||
| var call = Expression.Call(instanceParam, method!, typeParam, valueParam, contextParam); | ||
|
|
||
| void CallSerialization(Type genericType, string property) | ||
| { | ||
| var action = (Action)Expression.Lambda(typeof(Action), Expression.Block(new[] | ||
| { | ||
| instanceParam, | ||
| typeParam, | ||
| contextParam, | ||
| pairParam, | ||
| valueParam | ||
| }, | ||
| Expression.Assign(instanceParam, Expression.Constant(this, typeof(MsgPackSerialization))), | ||
| Expression.Assign(contextParam, Expression.Constant(context, typeof(SerializationContext))), | ||
| Expression.Assign(typeParam, Expression.Constant(genericType, typeof(Type))), | ||
| Expression.Assign(pairParam, Expression.Constant(value, type)), | ||
| Expression.Assign(valueParam, | ||
| Expression.Convert(Expression.Property(pairParam, property), typeof(object))), | ||
| call | ||
| )).Compile(); | ||
|
|
||
| action.Invoke(); | ||
| } | ||
|
|
||
| CallSerialization(generics[0], "Key"); | ||
| CallSerialization(generics[1], "Value"); | ||
| } | ||
| else if (typeIdentifier.StartsWith("System.Tuple`")) | ||
| { | ||
| var generics = type.GetGenericArguments(); | ||
| var method = GetType().GetMethod("Serialize", | ||
| new[] { typeof(Type), typeof(object), typeof(SerializationContext) }); | ||
| var instanceParam = Expression.Parameter(typeof(MsgPackSerialization), "instance"); | ||
| var typeParam = Expression.Parameter(typeof(Type), "type"); | ||
| var valueParam = Expression.Parameter(type, "value"); | ||
| var contextParam = Expression.Parameter(typeof(SerializationContext), "context"); | ||
|
|
||
| for (var idx = 0; idx < generics.Length; idx++) | ||
| { | ||
| var generic = generics[idx]; | ||
| var call = Expression.Call(instanceParam, method!, typeParam, | ||
| Expression.Convert(Expression.Property(valueParam, $"Item{idx + 1}"), typeof(object)), | ||
| contextParam); | ||
| var action = (Action)Expression.Lambda(typeof(Action), Expression.Block(new[] | ||
| { | ||
| instanceParam, | ||
| typeParam, | ||
| contextParam, | ||
| valueParam | ||
| }, | ||
| Expression.Assign(instanceParam, Expression.Constant(this, typeof(MsgPackSerialization))), | ||
| Expression.Assign(contextParam, Expression.Constant(context, typeof(SerializationContext))), | ||
| Expression.Assign(typeParam, Expression.Constant(generic, typeof(Type))), | ||
| Expression.Assign(valueParam, Expression.Constant(value, type)), | ||
| call | ||
| )).Compile(); | ||
|
|
||
| action.Invoke(); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| var ser = MessagePackSerializer.Get(type, _context); | ||
| ser.Pack(context.Writer.BaseStream, value); | ||
| } | ||
| } | ||
|
|
||
| public void Serialize<T>(T value, SerializationContext context) | ||
| { | ||
| Serialize(typeof(T), value, context); | ||
| } | ||
|
|
||
| public object Deserialize(Type type, SerializationContext context) | ||
| { | ||
| var ser = MessagePackSerializer.Get(type, _context); | ||
| return ser.Unpack(context.Reader.BaseStream); | ||
| } | ||
|
|
||
| public T Deserialize<T>(SerializationContext context) => Deserialize<T>(typeof(T), context); | ||
|
|
||
| public T Deserialize<T>(Type type, SerializationContext context) | ||
| { | ||
| var canInstance = CanCreateInstanceUsingDefaultConstructor(type); | ||
| var typeIdentifier = GetTypeIdentifier(type); | ||
|
|
||
| if (TypeCache<T>.IsSimpleType) | ||
| { | ||
| var primitive = Deserialize(type, context); | ||
| if (primitive != null) return (T)primitive; | ||
| } | ||
| if (typeIdentifier == "System.Collections.Generic.KeyValuePair`2") | ||
| { | ||
| var generics = type.GetGenericArguments(); | ||
| var constructor = type.GetConstructor(generics) ?? | ||
| throw new SerializationException(context, type, | ||
| $"Could not find suitable constructor for type: {type.Name}"); | ||
|
|
||
| var key = DeserializeAnonymously(generics[0], context); | ||
| var value = DeserializeAnonymously(generics[1], context); | ||
| var keyParam = Expression.Parameter(generics[0], "key"); | ||
| var valueParam = Expression.Parameter(generics[1], "value"); | ||
| var block = Expression.Block( | ||
| new[] { keyParam, valueParam }, | ||
| Expression.Assign(keyParam, Expression.Constant(key, generics[0])), | ||
| Expression.Assign(valueParam, Expression.Constant(value, generics[1])), | ||
| Expression.New(constructor, keyParam, valueParam) | ||
| ); | ||
|
|
||
| if (typeof(T) == typeof(object)) | ||
| { | ||
| var generic = typeof(ObjectActivator<>).MakeGenericType(type); | ||
| var activator = Expression.Lambda(generic, block).Compile(); | ||
|
|
||
| return (T)activator.DynamicInvoke(); | ||
| } | ||
| else | ||
| { | ||
| var activator = | ||
| (ObjectActivator<T>)Expression.Lambda(typeof(ObjectActivator<T>), block).Compile(); | ||
|
|
||
| return activator.Invoke(); | ||
| } | ||
| } | ||
| else if (typeIdentifier.StartsWith("System.Tuple`")) | ||
| { | ||
| var generics = type.GetGenericArguments(); | ||
| var constructor = type.GetConstructor(generics) ?? | ||
| throw new SerializationException(context, type, | ||
| $"Could not find suitable constructor for type: {type.Name}"); | ||
| var parameters = new List<Expression>(); | ||
|
|
||
| foreach (var generic in generics) | ||
| { | ||
| var entry = Deserialize(generic, context); | ||
|
|
||
| parameters.Add(Expression.Constant(entry, generic)); | ||
| } | ||
|
|
||
| var expression = Expression.New(constructor, parameters); | ||
|
|
||
| if (typeof(T) == typeof(object)) | ||
| { | ||
| var generic = typeof(ObjectActivator<>).MakeGenericType(type); | ||
| var activator = Expression.Lambda(generic, expression).Compile(); | ||
|
|
||
| return (T)activator.DynamicInvoke(); | ||
| } | ||
| else | ||
| { | ||
| var activator = | ||
| (ObjectActivator<T>)Expression.Lambda(typeof(ObjectActivator<T>), expression).Compile(); | ||
|
|
||
| return activator.Invoke(); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| if (!canInstance) | ||
| { | ||
| throw new SerializationException(context, type, $"Type {type.Name} is missing its emtpy constructor"); | ||
| } | ||
| var ser = MessagePackSerializer.Get<T>(_context); | ||
| return ser.Unpack(context.Reader.BaseStream); | ||
| } | ||
| } | ||
|
|
||
| public object DeserializeAnonymously(Type type, SerializationContext context) => | ||
| Deserialize<object>(type, context); | ||
|
|
||
| private static string GetTypeIdentifier(Type type) | ||
| { | ||
| var builder = new StringBuilder(); | ||
| var declaring = type; | ||
|
|
||
| builder.Append(type.Namespace); | ||
| builder.Append("."); | ||
|
|
||
| var idx = builder.Length; | ||
|
|
||
| while ((declaring = declaring.DeclaringType) != null) | ||
| { | ||
| builder.Insert(idx, declaring.Name + "."); | ||
| } | ||
|
|
||
| builder.Append(type.Name); | ||
|
|
||
| return builder.ToString(); | ||
| } | ||
| public object? DeserializePrimitive(Type type, SerializationContext context) | ||
| { | ||
| try | ||
| { | ||
| if (context.Reader == null) throw new Exception("SerializationContext.Reader is null."); | ||
| switch (Type.GetTypeCode(type)) | ||
| { | ||
| case TypeCode.Boolean: | ||
| return context.Reader.ReadBoolean(); | ||
| case TypeCode.Byte: | ||
| return context.Reader.ReadByte(); | ||
| case TypeCode.Char: | ||
| return context.Reader.ReadChar(); | ||
| case TypeCode.Double: | ||
| return context.Reader.ReadDouble(); | ||
| case TypeCode.Int16: | ||
| return context.Reader.ReadInt16(); | ||
| case TypeCode.Int32: | ||
| return context.Reader.ReadInt32(); | ||
| case TypeCode.Int64: | ||
| return context.Reader.ReadInt64(); | ||
| case TypeCode.Single: | ||
| return context.Reader.ReadSingle(); | ||
| case TypeCode.String: | ||
| return context.Reader.ReadString(); | ||
| case TypeCode.SByte: | ||
| return context.Reader.ReadSByte(); | ||
| case TypeCode.UInt16: | ||
| return context.Reader.ReadUInt16(); | ||
| case TypeCode.UInt32: | ||
| return context.Reader.ReadUInt32(); | ||
| case TypeCode.UInt64: | ||
| return context.Reader.ReadUInt64(); | ||
| } | ||
|
|
||
| return default; | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| throw new SerializationException(context, type, $"Could not deserialize primitive: {type}", ex); | ||
| } | ||
| } | ||
| } | ||
| } |
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