我的Azure存储输出blob从未显示

Question

我正在尝试构建一个简单的Azure函数，该函数基于ImageResizer示例，但使用Microsoft Cognitive Server Computer Vision API进行调整大小。

我有计算机视觉API的工作代码，我已经将其移植到Azure函数中。

这一切似乎都很正常（没有错误），但我的输出blob从未被保存或显示在存储容器中。不确定我做错了什么，因为没有错误可以处理。

我的CSX（C#功能代码）如下

using System;
using System.Text;
using System.Net.Http;
using System.Net.Http.Headers;
public static void Run(Stream original, Stream thumb, TraceWriter log)
{
    //log.Verbose($"C# Blob trigger function processed: {myBlob}. Dimensions");
    string _apiKey = "PutYourComputerVisionApiKeyHere";
    string _apiUrlBase = "https://api.projectoxford.ai/vision/v1.0/generateThumbnail";
    string width = "100";
    string height = "100";
    bool smartcropping = true;
    using (var httpClient = new HttpClient())
    {
        //setup HttpClient
        httpClient.BaseAddress = new Uri(_apiUrlBase);
        httpClient.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", _apiKey);
        //setup data object
        HttpContent content = new StreamContent(original);
        content.Headers.ContentType = new MediaTypeWithQualityHeaderValue("application/octet-stream");
        // Request parameters
        var uri = $"{_apiUrlBase}?width={width}&height={height}&smartCropping={smartcropping}";
        //make request
        var response = httpClient.PostAsync(uri, content).Result;
        //log result
        log.Verbose($"Response: IsSucess={response.IsSuccessStatusCode}, Status={response.ReasonPhrase}");
        //read response and write to output stream
        thumb = new MemoryStream(response.Content.ReadAsByteArrayAsync().Result);
    }
}

我的函数json如下

{
  "bindings": [
    {
      "path": "originals/{name}",
      "connection": "thumbnailgenstorage_STORAGE",
      "name": "original",
      "type": "blobTrigger",
      "direction": "in"
    },
    {
      "path": "thumbs/%rand-guid%",
      "connection": "thumbnailgenstorage_STORAGE",
      "type": "blob",
      "name": "thumb",
      "direction": "out"
    }
  ],
  "disabled": false
}

我的Azure存储帐户名为"thumbnailgenstorage"，它有两个名为"originals"one_answers"thumbs"的容器。存储帐户密钥为KGdcO+hjvARQvSwd2rfmdc+rrAsK0tA5xpE4RVNmXZgExCE+Cyk4q0nSiulDwvRHrSAkYjyjVezwdaeLCIb53g==。

我很高兴人们能用我的钥匙帮我解决这个问题！：）

Answer 1

我现在开始工作了。我把输出流写错了。

此解决方案是一个Azure函数，它在名为"Originals"的Azure blob存储容器中的blob到达时触发，然后使用Computer Vision API智能地调整图像大小并存储在名为为"Thumbs"的其他blob容器中。

以下是正在运行的CSX（c#脚本）：

using System;
using System.Text;
using System.Net.Http;
using System.Net.Http.Headers;
public static void Run(Stream original, Stream thumb, TraceWriter log)
{
    int width = 320;
    int height = 320;
    bool smartCropping = true;
    string _apiKey = "PutYourComputerVisionApiKeyHere";
    string _apiUrlBase = "https://api.projectoxford.ai/vision/v1.0/generateThumbnail";
    using (var httpClient = new HttpClient())
    {
        httpClient.BaseAddress = new Uri(_apiUrlBase);
        httpClient.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", _apiKey);
        using (HttpContent content = new StreamContent(original))
        {
            //get response
            content.Headers.ContentType = new MediaTypeWithQualityHeaderValue("application/octet-stream");
            var uri = $"{_apiUrlBase}?width={width}&height={height}&smartCropping={smartCropping.ToString()}";
            var response = httpClient.PostAsync(uri, content).Result;
            var responseBytes = response.Content.ReadAsByteArrayAsync().Result;
            //write to output thumb
            thumb.Write(responseBytes, 0, responseBytes.Length);
        }
    }
}

以下是集成JSON

{
  "bindings": [
    {
      "path": "originals/{name}",
      "connection": "thumbnailgenstorage_STORAGE",
      "name": "original",
      "type": "blobTrigger",
      "direction": "in"
    },
    {
      "path": "thumbs/{name}",
      "connection": "thumbnailgenstorage_STORAGE",
      "name": "thumb",
      "type": "blob",
      "direction": "out"
    }
  ],
  "disabled": false
}