/// <summary>
/// Returns all method parameters in the given method implementing IMethodAttribute.
/// </summary>
/// <param name="method">The method.</param>
/// <returns>The method parameters.</returns>
public IEnumerable <MethodParameter> GetMethodParametersInMethod(Method method)
{
// Get the assembly.
var assemblyPath = Directory.EnumerateFiles(this._assembliesPath, $"{method.AssemblyName}.dll").Single();
// Load into memory.
var myAssemblyLoadContext = new MyAssemblyLoadContext();
var assemblyInMemory = myAssemblyLoadContext.LoadFromAssemblyPath(assemblyPath);
// Get the classes implementing the IMethodAttribute interface.
return((from c in assemblyInMemory.GetTypes()
from m in c.GetMethods()
from t in m.GetCustomAttributes()
from ma in this._methodAttributes
from marg in m.GetParameters()
where c.Name.Equals(method.ClassName) &&
m.Name.Equals(method.Name) &&
t.GetType() == ma.GetType()
select new MethodParameter()
{
Name = marg.Name,
Type = marg.ParameterType.ToString(),
AssemblyName = method.AssemblyName,
ClassName = method.ClassName,
MethodName = method.Name
}).ToArray());
}
/// <summary>
/// Method to save an assembly.
/// </summary>
/// <param name="assembly">The assembly to save.</param>
public void SaveAssembly(Assembly assembly)
{
// Sanity tests.
// 1. Is DLL?
if (!assembly.Name.EndsWith(".dll"))
{
throw new BadImageFormatException("Unexpected file extension.");
}
// Save in order to load from disk.
var assemblyPath = Path.Combine(this._assembliesPath, assembly.Name);
using (var fileStream = File.Create(assemblyPath))
{
fileStream.Write(assembly.ContentBytes, 0, assembly.ContentBytes.Length);
}
try
{
// 2. Can we load it?
var myAssemblyLoadContext = new MyAssemblyLoadContext();
var assemblyInMemory = myAssemblyLoadContext.LoadFromAssemblyPath(assemblyPath);
// 3. Any of the methods are marked with the method attribute?
if (assemblyInMemory.GetTypes().Any(
assemblyType => assemblyType.GetMethods().Any(
typeMethod => typeMethod.GetCustomAttributes().Any(
customAttribute => this._methodAttributes.Any(
methodAttribute => customAttribute.GetType() == methodAttribute.GetType()
)
)
)
)
)
{
return;
}
throw new DataSourceAttributeNotFoundException(
"The uploaded assembly do not implement IMethodAttribute interface.");
}
catch
{
try
{
File.SetAttributes(assemblyPath, FileAttributes.Normal);
File.Delete(assemblyPath);
}
catch
{
// ignored
}
throw;
}
}
/// <summary>
/// Returns all the classes with methods implementing IMethodAttribute interface in the given assembly.
/// </summary>
/// <param name="assemblyName">The assembly name.</param>
/// <returns>The classes with methods implementing IMethodAttribute interface.</returns>
public IEnumerable <Class> GetClassesInAssembly(string assemblyName)
{
// Get the assembly.
var assemblyPath = Directory.EnumerateFiles(this._assembliesPath, $"{assemblyName}.dll").Single();
// Load into memory.
var myAssemblyLoadContext = new MyAssemblyLoadContext();
var assemblyInMemory = myAssemblyLoadContext.LoadFromAssemblyPath(assemblyPath);
// Get the classes implementing the IMethodAttribute interface.
return((from c in assemblyInMemory.GetTypes()
from m in c.GetMethods()
from t in m.GetCustomAttributes()
from ma in this._methodAttributes
where t.GetType() == ma.GetType()
select new Class
{
FullName = c.FullName,
Name = c.Name,
AssemblyName = assemblyName
}).ToArray());
}
/// <summary>
/// Returns all the methods implementing IMethodAttribute in the given class.
/// </summary>
/// <param name="class">The class.</param>
/// <returns>The methods implementing IMethodAttribute interface.</returns>
public IEnumerable <Method> GetMethodsInClass(Class @class)
{
// Get the assembly.
var assemblyPath = Directory.EnumerateFiles(this._assembliesPath, $"{@class.AssemblyName}.dll").Single();
// Load into memory.
var myAssemblyLoadContext = new MyAssemblyLoadContext();
var assemblyInMemory = myAssemblyLoadContext.LoadFromAssemblyPath(assemblyPath);
// Get the classes implementing the IMethodAttribute interface.
return((from c in assemblyInMemory.GetTypes()
from m in c.GetMethods()
from t in m.GetCustomAttributes()
from ma in this._methodAttributes
where c.Name.Equals(@class.Name) &&
t.GetType() == ma.GetType()
select new Method
{
Name = m.Name,
ClassName = @class.Name,
AssemblyName = @class.AssemblyName
}).ToArray());
}