如何实现My Azure功能以在PowerApps中使用它 [英] How to implement My Azure function for using it in PowerApps

问题描述

我目前正在尝试编写一个函数，以将天蓝色存储中的两个图像组合为一个图像. 我不知道如何设置我的函数类，这样我就可以在具有2个选定图像的powerapps中触发该函数.

Im currently trying to write a function to combine two images from azure storage to one image. I dont know how to setup my function class so that I can trigger the function in powerapps with 2 selected images.

这是我的课程

    public static class Function1
{
    [Obsolete] // switch TraceWrite to Ilogger
    [FunctionName("Function1")]
    public static void Run(string background, string overlay, CloudBlockBlob outputBlob, TraceWriter log)
    {
        log.Info($"Function triggered with blob\n Background: {background} \n Overlay: {overlay}");

        ConvertMe Converter = new ConvertMe(System.Drawing.Color.Black); // My ImageEdit Class I have written
        Bitmap _Main = new Bitmap(background);
        Bitmap Overlay = Converter.MakeTransparent(overlay);



        using (MemoryStream memory = new MemoryStream())
        {
            Converter.ComebineBitmap(_Main, Overlay).Save(memory, ImageFormat.Jpeg);
            memory.Position = 0;
            outputBlob.Properties.ContentType = "image/jpeg";
            outputBlob.UploadFromStreamAsync(memory);
        }


    }

}

推荐答案

首先，假设您已经知道不能直接调用函数，尤其是使用blob触发器函数.

Firstly, suppose you already know you could not directly call your function, especially you are using blob trigger function.

然后是有关如何在Power应用程序中使用功能的信息.有关于此的博客:在PowerApps中使用Azure函数.您需要http触发函数，并使用Swagger定义REST签名，然后在强力应用程序中使用自定义API.

Then is about how to use function in power apps. There is blog about this: Using Azure Functions in PowerApps. You need the http trigger function and define the REST signature using Swagger then use the custom API in power apps.

最后一件事是关于如何在http触发函数中获得两个blob.从Blob绑定文档中，您可以获取输入用法，您会发现c#或c#脚本函数均支持CloudBlockBlob绑定.

The last thing is about how to get two blob in the http trigger function. From the blob binding doc you could get the Input-usage, you could find the c# or c# script function both support CloudBlockBlob binding.

下面是从具有Http触发功能的两个txt blob中读取的示例，您可以添加输出绑定以存储输出图像.

The below is a sample read from two txt blob with http trigger function, you could add an output binding to storage the output image.

public static class Function1
    {
        [FunctionName("Function1")]
        public static async Task RunAsync(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
            [Blob("test/test.txt",FileAccess.ReadWrite)]CloudBlockBlob blob1,
            [Blob("test/out.txt", FileAccess.ReadWrite)]CloudBlockBlob blob2,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");

            string test = await blob1.DownloadTextAsync();
            string outtxt = await blob2.DownloadTextAsync();
            log.LogInformation("test value： " + test);
            log.LogInformation("outtxt value： " + outtxt);

        }
    }

然后关注该博客，假设它可以解决问题，希望对您有所帮助，如果您还有其他问题，请随时告诉我.

Then follow the blog, suppose this could work, hope this could help you, if you still have other problem, please feel free to let me know.

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