Ombi/src/Ombi/Controllers/V1/UpdateController.cs

using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Ombi.Core.Processor;
using Ombi.Helpers;

namespace Ombi.Controllers.V1
{
    [ApiV1]
    [Produces("application/json")]
    [AllowAnonymous]
    [ApiController]
    public class UpdateController : ControllerBase
    {
        public UpdateController(ICacheService cache, IChangeLogProcessor processor)
        {
            _cache = cache;
            _processor = processor;
        }

        private readonly ICacheService _cache;
        private readonly IChangeLogProcessor _processor;

        [HttpGet]
        public async Task<UpdateModel> UpdateAvailable()
        {
            return await _cache.GetOrAddAsync("Update", () =>  _processor.Process());
        }
    }
}