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Resource Proxy

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This commit is contained in:
Ahmed Zamil 2019-07-23 06:22:24 +03:00
parent 2d9f61c0d9
commit a2f4238933
12 changed files with 238 additions and 23 deletions
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2
Esiur.Stores.MongoDB/Esiur.Stores.MongoDB.csproj
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@ -11,7 +11,7 @@
<PackageProjectUrl>http://www.esiur.com</PackageProjectUrl>
<RepositoryUrl>https://github.com/esiur/esiur-dotnet/</RepositoryUrl>
<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
<Version>1.2.0</Version>
<Version>1.2.2</Version>
</PropertyGroup>
<ItemGroup>

4
Esiur.Stores.MongoDB/MongoDBStore.cs
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@ -11,6 +11,7 @@ using System.Threading.Tasks;
using Esiur.Resource.Template;
using System.Linq;
using Esiur.Security.Permissions;
using Esiur.Proxy;
namespace Esiur.Stores.MongoDB
{
@ -100,8 +101,9 @@ namespace Esiur.Stores.MongoDB
return new AsyncReply<IResource>(null);
var document = list[0];
var type = Type.GetType(document["classname"].AsString);
IResource resource = (IResource)Activator.CreateInstance(Type.GetType(document["classname"].AsString));
IResource resource = (IResource)Activator.CreateInstance(ResourceProxy.GetProxy(type));
resources.Add(document["_id"].AsObjectId.ToString(), resource);
Warehouse.Put(resource, document["name"].AsString, this);

5
Esiur/Esiur.csproj
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@ -7,10 +7,10 @@
<PackageLicenseUrl>https://github.com/esiur/esiur-dotnet/blob/master/LICENSE</PackageLicenseUrl>
<PackageProjectUrl>http://www.esiur.com</PackageProjectUrl>
<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
<Version>1.2.3</Version>
<Version>1.2.5</Version>
<RepositoryUrl>https://github.com/esiur/esiur-dotnet</RepositoryUrl>
<Authors>Ahmed Kh. Zamil</Authors>
<AssemblyVersion>1.2.3.0</AssemblyVersion>
<AssemblyVersion>1.2.5.0</AssemblyVersion>
<Company>Esiur Foundation</Company>
</PropertyGroup>
@ -44,6 +44,7 @@
<PackageReference Include="System.Net.NameResolution" Version="4.3.0" />
<PackageReference Include="System.Net.NetworkInformation" Version="4.3.0" />
<PackageReference Include="System.Net.Security" Version="4.3.1" />
<PackageReference Include="System.Reflection.Emit" Version="4.3.0" />
</ItemGroup>
</Project>

7
Esiur/Net/IIP/DistributedConnectionProtocol.cs
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@ -1369,11 +1369,16 @@ namespace Esiur.Net.IIP
}
else
{
/*
#if NETSTANDARD1_5
var pi = r.GetType().GetTypeInfo().GetProperty(pt.Name);
#else
var pi = r.GetType().GetProperty(pt.Name);
#endif
#endif*/
var pi = pt.Info;
if (pi != null)
{

151
Esiur/Proxy/ResourceProxy.cs Normal file
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@ -0,0 +1,151 @@
using Esiur.Resource;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Reflection.Emit;
using System.Text;
namespace Esiur.Proxy
{
public static class ResourceProxy
{
static Dictionary<Type, Type> cache = new Dictionary<Type, Type>();
#if NETSTANDARD1_5
static MethodInfo modifyMethod = typeof(Instance).GetTypeInfo().GetMethod("Modified");
static MethodInfo instanceGet = typeof(IResource).GetTypeInfo().GetProperty("Instance").GetGetMethod();
#else
static MethodInfo modifyMethod = typeof(Instance).GetMethod("Modified");
static MethodInfo instanceGet = typeof(IResource).GetProperty("Instance").GetGetMethod();
#endif
public static Type GetProxy(Type type)
{
if (cache.ContainsKey(type))
return cache[type];
#if NETSTANDARD1_5
var typeInfo = type.GetTypeInfo();
if (typeInfo.IsSealed)
throw new Exception("Sealed class can't be proxied.");
var props = from p in typeInfo.GetProperties()
where p.CanWrite && p.GetSetMethod().IsVirtual &&
p.GetCustomAttributes(typeof(ResourceProperty), false).Count() > 0
select p;
#else
if (type.IsSealed)
throw new Exception("Sealed class can't be proxied.");
var props = from p in type.GetProperties()
where p.CanWrite && p.GetSetMethod().IsVirtual &&
p.GetCustomAttributes(typeof(ResourceProperty), false).Count() > 0
select p;
#endif
var assemblyName = new AssemblyName("Esiur.Proxy.T." + type.Namespace);
var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
var moduleBuilder = assemblyBuilder.DefineDynamicModule(assemblyName.Name);
var typeName = Assembly.CreateQualifiedName(assemblyName.FullName, type.Name);
var typeBuilder = moduleBuilder.DefineType(typeName,
TypeAttributes.Public | TypeAttributes.Class, type);
foreach (PropertyInfo propertyInfo in props)
CreateProperty(propertyInfo, typeBuilder);
#if NETSTANDARD1_5
var t = typeBuilder.CreateTypeInfo().AsType();
cache.Add(type, t);
return t;
#else
var t = typeBuilder.CreateType();
cache.Add(type, t);
return t;
#endif
}
public static Type GetProxy<T>()
where T : IResource
{
return GetProxy(typeof(T));
}
private static void CreateProperty(PropertyInfo pi, TypeBuilder typeBuilder)
{
var propertyBuilder = typeBuilder.DefineProperty(pi.Name, PropertyAttributes.None, pi.PropertyType, null);
// Create set method
MethodBuilder builder = typeBuilder.DefineMethod("set_" + pi.Name,
MethodAttributes.Public | MethodAttributes.Virtual, null, new Type[] { pi.PropertyType });
builder.DefineParameter(1, ParameterAttributes.None, "value");
ILGenerator g = builder.GetILGenerator();
Label callModified = g.DefineLabel();
Label exitMethod = g.DefineLabel();
/*
IL_0000: ldarg.0
IL_0001: call instance class [Esiur]Esiur.Resource.Instance [Esiur]Esiur.Resource.Resource::get_Instance()
// (no C# code)
IL_0006: dup
IL_0007: brtrue.s IL_000c
IL_0009: pop
// }
IL_000a: br.s IL_0017
// (no C# code)
IL_000c: ldstr "Level3"
IL_0011: call instance void [Esiur]Esiur.Resource.Instance::Modified(string)
IL_0016: nop
IL_0017: ret
*/
// Add IL code for set method
g.Emit(OpCodes.Nop);
g.Emit(OpCodes.Ldarg_0);
g.Emit(OpCodes.Ldarg_1);
g.Emit(OpCodes.Call, pi.GetSetMethod());
/*
IL_0000: ldarg.0
IL_0001: call instance class [Esiur]Esiur.Resource.Instance [Esiur]Esiur.Resource.Resource::get_Instance()
IL_0006: ldstr "Level3"
IL_000b: callvirt instance void [Esiur]Esiur.Resource.Instance::Modified(string)
IL_0010: ret
*/
// Call property changed for object
g.Emit(OpCodes.Nop);
g.Emit(OpCodes.Ldarg_0);
g.Emit(OpCodes.Call, instanceGet);
g.Emit(OpCodes.Dup);
g.Emit(OpCodes.Brtrue_S, callModified);
g.Emit(OpCodes.Pop);
g.Emit(OpCodes.Br_S, exitMethod);
g.MarkLabel(callModified);
g.Emit(OpCodes.Ldstr, pi.Name);
g.Emit(OpCodes.Callvirt, modifyMethod);
g.Emit(OpCodes.Nop);
g.MarkLabel(exitMethod);
g.Emit(OpCodes.Ret);
propertyBuilder.SetSetMethod(builder);
}
}
}

32
Esiur/Resource/Instance.cs
View File

@ -270,19 +270,22 @@ namespace Esiur.Resource
if (pt == null)
return false;
/*
#if NETSTANDARD1_5
var pi = resource.GetType().GetTypeInfo().GetProperty(name);
var pi = resource.GetType().GetTypeInfo().GetProperty(name, new[] { resource.GetType() });
#else
var pi = resource.GetType().GetProperty(pt.Name);
#endif
if (pi.PropertyType == typeof(DistributedPropertyContext))
*/
if (pt.Info.PropertyType == typeof(DistributedPropertyContext))
return false;
try
{
if (pi.CanWrite)
pi.SetValue(resource, DC.CastConvert(value, pi.PropertyType));
if (pt.Info.CanWrite)
pt.Info.SetValue(resource, DC.CastConvert(value, pt.Info.PropertyType));
}
catch(Exception ex)
{
@ -354,12 +357,16 @@ namespace Esiur.Resource
foreach (var pt in template.Properties)
{
/*
#if NETSTANDARD1_5
var pi = resource.GetType().GetTypeInfo().GetProperty(pt.Name);
#else
var pi = resource.GetType().GetProperty(pt.Name);
#endif
var rt = pi.GetValue(resource, null);
*/
var rt = pt.Info.GetValue(resource, null);
props.Add(new PropertyValue(rt, ages[pt.Index], modificationDates[pt.Index]));
}
@ -474,7 +481,7 @@ namespace Esiur.Resource
/// <param name="propertyName"></param>
/// <param name="newValue"></param>
/// <param name="oldValue"></param>
public void Modified([CallerMemberName] string propertyName = "")//, object newValue = null)//, object oldValue = null)
public void Modified([CallerMemberName] string propertyName = "")
{
object value;
if (GetPropertyValue(propertyName, out value))
@ -499,16 +506,20 @@ namespace Esiur.Resource
/// <returns>True, if the resource has the property.</returns>
public bool GetPropertyValue(string name, out object value)
{
/*
#if NETSTANDARD1_5
PropertyInfo pi = resource.GetType().GetTypeInfo().GetProperty(name, BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly);
#else
PropertyInfo pi = resource.GetType().GetProperty(name, BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly);
#endif
*/
if (pi != null)
var pt = template.GetPropertyTemplate(name);
if (pt != null && pt.Info != null)
{
/*
#if NETSTANDARD1_5
object[] ca = pi.GetCustomAttributes(typeof(ResourceProperty), false).ToArray();
@ -523,6 +534,11 @@ namespace Esiur.Resource
// value = (value as Func<IManager, object>)(sender);
return true;
}
*/
value = pt.Info.GetValue(resource, null);
return true;
}
value = null;

7
Esiur/Resource/Template/PropertyTemplate.cs
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@ -2,6 +2,7 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
@ -17,6 +18,12 @@ namespace Esiur.Resource.Template
}
public PropertyInfo Info
{
get;
set;
}
//bool ReadOnly;
//IIPTypes::DataType ReturnType;
public PropertyPermission Permission {

5
Esiur/Resource/Template/ResourceTemplate.cs
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@ -126,6 +126,10 @@ namespace Esiur.Resource.Template
public ResourceTemplate(Type type)
{
if (type.Namespace.Contains("Esiur.Proxy.T"))
type = type.GetTypeInfo().BaseType;
// set guid
var typeName = Encoding.UTF8.GetBytes(type.FullName);
@ -156,6 +160,7 @@ namespace Esiur.Resource.Template
if (ps.Length > 0)
{
var pt = new PropertyTemplate(this, i++, pi.Name, ps[0].ReadExpansion, ps[0].WriteExpansion, ps[0].Storage);
pt.Info = pi;
properties.Add(pt);
}
}

5
Esiur/Resource/Warehouse.cs
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@ -24,6 +24,7 @@ SOFTWARE.
using Esiur.Data;
using Esiur.Engine;
using Esiur.Proxy;
using Esiur.Resource.Template;
using Esiur.Security.Permissions;
using System;
@ -347,8 +348,10 @@ namespace Esiur.Resource
}
public static T New<T>(string name, IStore store = null, IResource parent = null, IPermissionsManager manager = null)
where T:IResource
{
var res = Activator.CreateInstance(typeof(T)) as IResource;
var type = ResourceProxy.GetProxy<T>();
var res = Activator.CreateInstance(type) as IResource;
Put(res, name, store, parent, null, 0, manager);
return (T)res;
}

2
Test/MyMembership.cs
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@ -9,7 +9,7 @@ using System.Text;
namespace Test
{
class MyMembership : IMembership
public class MyMembership : IMembership
{
public Instance Instance { get; set; }

18
Test/MyObject.cs
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@ -9,7 +9,7 @@ using System.Threading;
namespace Test
{
class MyObject : Resource
public class MyObject : Resource
{
[ResourceEvent]
@ -113,6 +113,7 @@ namespace Test
}
}
/*
int level;
[ResourceProperty]
public int Level
@ -124,6 +125,21 @@ namespace Test
Instance?.Modified();
}
}
*/
[ResourceProperty]
public virtual int Level
{
get;
set;
}
[ResourceProperty]
public int Level3
{
get => 0;
set => Instance?.Modified();
}
}

11
Test/Program.cs
View File

@ -44,9 +44,10 @@ namespace Test
static async Task Main(string[] args)
{
//AsyncContext.Run(() => ());
// Create stores to keep objects.
@ -85,6 +86,11 @@ namespace Test
else
myObject =(MyObject) (await Warehouse.Get("db/my"));//.Then((o) => { myObject = (MyObject)o; });
//var obj = ProxyObject.<MyObject>();
//Warehouse.Put(obj, "dd", system);
//obj.Level2= 33;
// Create new distributed server object
var iip = Warehouse.New<DistributedServer>("iip", system);
// Set membership which handles authentication.
@ -136,8 +142,11 @@ namespace Test
running = false;
});
else
{
myObject.Level = 88;
Console.WriteLine(myObject.Name + " " + myObject.Level );
}
}
}