SharpAspect 0.1.3

Getting Started

<a href="https://www.nuget.org/packages/SharpAspect/"> <img alt="Nuget (with prereleases)" src="https://img.shields.io/nuget/vpre/SharpAspect?label=SharpAspect%20%7C%20NuGet">

</a>

<a href="https://www.nuget.org/packages/SharpAspect/"> <img src="https://img.shields.io/nuget/dt/SharpAspect"> </a>

dotnet add package SharpAspect

Defining Interceptors

All attributes must derive from MethodInterceptionAttribute class.

public class LogAttribute: MethodInterceptorAttribute
{

}

public class CacheAttribute: MethodInterceptorAttribute
{

}

<br>

All interceptors also must implement the IMethodInterceptor interface.

public class LogInterceptor : IMethodInterceptor
{
    public void AfterInvoke(IInvocation invocation)
    {
        // throw new System.NotImplementedException();
    }

    public void BeforeInvoke(IInvocation invocation)
    {
        System.Console.WriteLine($"[Logging] {invocation.Method.DeclaringType.FullName}.{invocation.Method.Name}");
    }

    public void OnError(IInvocation invocation, System.Exception e)
    {
        throw new System.NotImplementedException();
        // System.Console.WriteLine(e.Message);
    }
}

public class CacheInterceptor : IMethodInterceptor
{
    public void AfterInvoke(IInvocation invocation)
    {
        // throw new System.NotImplementedException();
    }

    public void BeforeInvoke(IInvocation invocation)
    {
        System.Console.WriteLine($"[Caching] {invocation.Method.DeclaringType.FullName}.{invocation.Method.Name}");
    }

    public void OnError(IInvocation invocation, System.Exception e)
    {
        throw new System.NotImplementedException();
    }
}

Registering your interceptors

private static IServiceProvider ConfigureServices()
{
    return new ServiceCollection()
        .ConfigureDynamicProxy(c =>
        {
            // Attribute & Interceptor mapping
            c.AddInterceptor<CacheAttribute, CacheInterceptor>();
            c.AddInterceptor<LogAttribute, LogInterceptor>();
        })

        // Transient service
        .AddTransientProxy<IRocket, Rocket>()

        .BuildServiceProvider();
}

public interface IRocket
{
    void Launch();
    string SetRoute(string route);
}

public class Rocket: IRocket
{
    [Log]
    public void Launch()
    {
        System.Console.WriteLine("Launching rocket in 3...2.....1 🚀");
    }

    [Log]
    [Cache]
    public string SetRoute(string route)
    {
        System.Console.WriteLine($"Route: {route}");
        return route;
    }
}

static void Main(string[] args)
{
    var services = ConfigureServices();

    var rocket = services.GetRequiredService<IRocket>();

    rocket.SetRoute("Moon");
    rocket.Launch();
}

Sample Output

[Logging] SharpAspect.Sample.IRocket.SetRoute
[Caching] SharpAspect.Sample.IRocket.SetRoute
Route: Moon

[Logging] SharpAspect.Sample.IRocket.Launch
Launching rocket in 3...2.....1 🚀