simple swaggerui support

[slmgong]

add a SwashbuckleOrleansDescriptionProvider , which analysis Orleans.Http.Abstractions attribute then return
IApiDescriptionGroupCollectionProvider instance.

[oising]

Doesn't seem to work? I followed the readme instructions, (also had to add Swashbuckle.AspNetCore to the host example project) and when visiting the swagger ui, it fails to pick up any information on the IHelloGrain sample:

[jaredthirsk]

@oising @vivid216

I got endpoints to show up by changing SwashbuckleOrleansDescriptionProvider.CreateDescriptors as follows:

    var pattern = methodAttributes.Pattern;
    if(string.IsNullOrWhiteSpace(pattern))
    {
        pattern = "{optionalPrefix}/{optionalTopLevelPattern}{grainTypeName}/{grainId}/{methodName}";
    }
    string optionalPrefix = "grains"; // TODO MOVE to configuration
    string optionalTopLevelPatternWithTrailingSlash = ""; // TODO MOVE to configuration

    var relativePath = pattern
        .Replace("{optionalPrefix}", optionalPrefix)
        .Replace("{optionalTopLevelPattern}", optionalTopLevelPatternWithTrailingSlash)
        .Replace("{grainTypeName}", grainType.FullName)
        .Replace("{methodName}", methodInfo.Name)
        ;

    var description = new ApiDescription()
    {
        ActionDescriptor = descriptor,
        //GroupName = groupName, // Causes things to be skipped by default if the group doesn't match the documentName (SwaggerGeneratorOptions.DefaultOperationIdSelector)
        HttpMethod = methodAttributes.Method,
        RelativePath = relativePath
    };

If you want to see the full file, I checked in my version here:

https://github.com/lionfire/Core/blob/master/src/LionFire.Orleans.Http.Swagger/SwashbuckleOrleansDescriptionProvider.cs