Awesome
DudNet
DudNet is a C# source generator for implementing a proxy pattern.
Example
Generating a proxy for a class is as simple as marking it with the ProxyServiceAttribute
as follows:
using DudNet.Attributes;
public interface IExampleService {
public void ExampleFunction();
public int ExampleFunctionWithArgumentAndReturn(int number);
}
[ProxyService]
public class ExampleService : IExampleService {
public void ExampleFunction(){
// omitted for brevity
}
public int ExampleFunctionWithArgumentAndReturn(int number){
// omitted for brevity
}
public void FunctionNotOnInterface(){
// ommitted for brevity
}
}
Which would generate the following two classes:
using System.Runtime.CompilerServices;
using DudNet.Attributes;
public partial class ExampleServiceProxy : IExampleService {
private readonly IExampleService _service;
public void ExampleFunction() {
Interceptor();
ExampleFunctionInterceptor();
_service.ExampleFunction();
}
public int ExampleFunctionWithArgumentAndReturn(int number) {
Interceptor();
ExampleFunctionWithArgumentAndReturnInterceptor(number);
_service.ExampleFunctionWithArgumentAndReturn(number);
}
partial void Interceptor([CallerMemberName]string callerName = null);
partial void ExampleFunctionInterceptor();
partial void ExampleFunctionWithArgumentAndReturnInterceptor(int number);
}
and
using DudNet.Attributes;
public class ExampleServiceDud : IExampleService {
public void ExampleFunction() {
}
public int ExampleFunctionWithArgumentAndReturn(int number) {
}
}
These generated classes can be used by further implementing the partial
proxy class as follows:
public partial class ExampleServiceProxy : IExampleService {
public ExampleServiceProxy(ExampleProxyService service) {
// Some logic to determine whether you want to effectively "disable" the service
if (Random.Shared.NextDouble() > 0.5)
{
_service = service;
return;
}
_service = new ExampleServiceDud();
}
partial void Interceptor([CallerMemberName]string callerName = null) {
Console.Writeline("'{caller}' was called", callerName);
}
partial void ExampleFunctionWithArgumentAndReturnInterceptor(int number) {
if(number > 5)
{
throw new Exception("Received number value '{number}' - too high!", number);
}
}
}