ASP.net Web Api Versioning

Question

I have ASP.net Web Api project and I decided that it was time to support versioning. I am using official Microsoft Nuget to support versioning (more info here), and I decided to version by namespace (as exampled here).

Unfortunately I cannot get code to work. If I call my method like this:

http://localhost:7291/api/Saved/GetNumberOfSavedWorkoutsForUser?api-version=2.0

I get error:

Multiple types were found that match the controller named 'Saved'. This can happen if the route that services this request ('api/{controller}/{action}/{id}') found multiple controllers defined with the same name but differing namespaces, which is not supported.

And if I call it like this: http://localhost:7291/v2/Saved/GetNumberOfSavedWorkoutsForUser

I get error 404:

The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

I am not sure what I am doing wrong. Here is my code:

Startup.cs

public void Configuration(IAppBuilder app)
    {
        var configuration = new HttpConfiguration();
        var httpServer = new HttpServer(configuration);


        app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);

        // reporting api versions will return the headers "api-supported-versions" and "api-deprecated-versions"
        configuration.AddApiVersioning(o => 
        {
            o.AssumeDefaultVersionWhenUnspecified = true;
            o.ReportApiVersions = true; 
            o.DefaultApiVersion = ApiVersion.Default;
        });


        configuration.Routes.MapHttpRoute(
            "VersionedUrl",
            "v{apiVersion}/{controller}/{action}/{id}",
            defaults: null,
            constraints: new { apiVersion = new ApiVersionRouteConstraint() });

        configuration.Routes.MapHttpRoute(
            "VersionedQueryString",
            "api/{controller}/{action}/{id}",
            defaults: null);


        app.UseWebApi(httpServer);

        ConfigureAuth(app);
    }

Saved Controller (v1)

namespace Master.Infrastructure.Api.Controllers
{

    [Authorize]
    [RoutePrefix("api/Saved")]
    [ApiVersion("1.0")]
    public class SavedController : ApiController
    {

        private readonly IUserService _userService;

        public SavedController(IUserService userService)
        {
            _userService = userService;

        }


        [HttpGet]
        [ActionName("GetNumberOfSavedWorkouts")]
        public async Task GetNumberOfSavedWorkouts()
        {
            var numOfSavedWorkouts = new NumberOfSavedWorkouts
            {
                CurrentNumberOfSavedWorkouts =
                    await _userService.GetNumberOfSavedWorkoutsForUserAsync(User.Identity.GetUserId())
            };

            return numOfSavedWorkouts;
        }

    }
}

Saved Controller (v2)

namespace Master.Infrastructure.Api.V2.Controllers
{
    [Authorize]
    [ApiVersion("2.0")]
    [RoutePrefix("v{version:apiVersion}/Saved")]
    public class SavedController : ApiController
    {

        private readonly ISavedWorkoutService _savedWorkoutService;


        public SavedController(ISavedWorkoutService savedWorkoutService)
        {       
            _savedWorkoutService = savedWorkoutService;
        }


        [ActionName("GetNumberOfSavedWorkoutsForUser")]
        public async Task GetNumberOfSavedWorkoutsForUser()
        {
            var cnt = await _savedWorkoutService.CountNumberOfSavedWorkoutsForUser(User.Identity.GetUserId());

            return Ok(cnt);
        }
    }
}

ASP.net Web Api Versioning

1 Answers