ServiceProviderEndpoint

IServiceProvider webapi endpoint for faster and easier development.

Usage

If you have already registered services in the collection and want to give access to them via http, then just map a universal endpoint like this:

app.MapServiceProvider("services", builder.Services);
app.Run();

Now you can send post/get requests to your services, like:

GET /services/IYourService/SomeMethod?args=["arg1","arg2","arg3"]

or

POST /services/IYourService/SomeMethod
Content-Type: application/json
["arg1","arg2","arg3"]

Generics

Example request with generics:

GET /services/IYourService/SomeGenericMethod(Int32)?args=[111,222,333]

Requests use URL-safe notation for types. For example, Dictionary(String-Array(Int32)) is equivalent of Dictionary<string,int[]>.

Type casting

If your method has object type arguments like:

Task<int> ExampleMethod(object data, CancellationToken cancellationToken);

Then you need to add the type for cast as an additional parameter to the request:

GET /services/IYourService/ExampleMethod/List(String)?args=[["list_item1","list_item2","list_item3"]]

File streams

For downloading, it is enough that the method returns a stream object:

Task<Stream> SomeDownloadMethod(string a, string b, string c, CancellationToken cancellationToken);

Download request will be like this:

GET /services/IYourService/SomeDownloadMethod?args=["argA","argB","argC"]

For uploading, the method must have an argument of type Stream (position doesn't matter):

Task SomeUploadMethod(Stream stream, string a, string b, string c, CancellationToken cancellationToken); 

Upload request:

POST /services/IYourService/SomeUploadMethod?args=["argA","argB","argC"]
Content-Type: application/octet-stream
<SomeFileData>

JavaScript example:

let file = document.getElementById('some-input').files[0];
let response = await fetch('/services/IYourService/SomeUploadMethod?args='+encodeURIComponent(JSON.stringify(["argA","argB","argC"])), {
  method: 'POST',
  headers: { 'content-type': file.type || 'application/octet-stream' },
  body: file,
});

Security

If you don't want to publish all services in the collection, then just add a filter:

app.MapServiceProvider("services", builder.Services
  .Where(x => x.ServiceType.Namespace.StartsWith("Example")));

If authorization is needed, then it is added by the standard method for IEndpointConventionBuilder:

app.MapServiceProvider("services", builder.Services)
  .RequireAuthorization();

Security for methods can be added via Scrutor-decorators:

builder.Services.AddScoped<IExampleService, ExampleService>();
builder.Services.Decorate<IExampleService, SecureExampleService>();

.NET client

To connect to api from another .net application, use an existing client:

using ServiceProviderEndpoint.Client;

using var client = new SpeClient("https://localhost:7149/services");

var result = await client
  .GetService<IYourService>()
  .SomeMethod("arg1","arg2","arg3");

Example projects

• WebApi
• ClientApp