isabella232 / azure-functions-model-validator

Azure Functions model validator

Easy to use fluent API for validating modesl that arrived via HttpTrigger. Define what should happen when the model is ok. Optionally you can define on-failiure callback. The validator is also in Async version.

Example

public class Request
    {
        [Required]
        public string Name { get; set; }
    }
    
    //...


[FunctionName(nameof(Sync))]
        public static IActionResult Sync(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]
            Request req,
            ILogger log)
        {
            return AzureFunctionFluentValidator<Request>.Init
                .OnSuccess(dto => new OkObjectResult($"Hello {dto.Name}"))
                .OnFailure((dto, results) =>
                {
                    results.ForEach(x => log.LogWarning(x.ErrorMessage));
                })
                .ValidateAndReturn(req);
        }
        
          [FunctionName(nameof(Async))]
        public static Task<IActionResult> Async(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]
            Request req,
            ILogger log)
        {
            return AzureFunctionFluentAsyncValidator<Request>.Init
                .OnSuccess(async dto =>
                {
                    log.LogInformation($"Waiting for one second");
                    await Task.Delay(1000);
                    return new OkObjectResult($"Hello {dto.Name}");
                })
                .OnFailure(async (dto, results) =>
                {
                    log.LogInformation($"Waiting for one second");
                    await Task.Delay(1000);
                    results.ForEach(x => log.LogWarning(x.ErrorMessage));
                })
                .ValidateAndReturnAsync(req);
        }