尝试在 blobstorage 触发函数中引用 CloudBlockBlob 时出现编译错误

Question

这是我的功能代码。

#r "Microsoft.WindowsAzure.Storage.Blob"

public static async Task Run(CloudBlockBlob uploadedVideo, string name, CloudBlockBlob processedVideo, ILogger log)
{
    log.LogInformation($"C# Blob trigger function Processed blob\n Name:{name} \n Size: {uploadedVideo.Length} Bytes");
    var fileEntry = new 
    {
        fileName = $"uploaded-videos/{name}",
        fileType = "video",
        correlationId = Guid.NewGuid()
    };
    await processedVideo.StartCopyAsync(uploadedVideo);  
    await uploadedVideo.DeleteIfExistsAsync();
}

这是我的function.json

{
  "bindings": [
    {
      "name": "uploadedVideo",
      "type": "blobTrigger",
      "direction": "in",
      "path": "uploaded-videos/{name}",
      "connection": "AzureWebJobsStorage"
    },
    {
      "type": "blob",
      "name": "processedVideo",
      "path": "processed-videos/{name}-{rand-guid}",
      "connection": "AzureWebJobsStorage",
      "direction": "out"
    }
  ]
}

这是我运行这个函数时它不断抛出的错误。

2018-09-25T07:34:10.813 [错误] 函数编译错误 2018-09-25T07:34:10.982 [错误] BlobTriggerCSharp.csx(2,1)：错误 CS0006：找不到元数据文件“Microsoft.WindowsAzure.Storage.Blob” 2018-09-25T07:34:11.040 [错误] BlobTriggerCSharp.csx(4,30)：错误 CS0246：找不到类型或命名空间名称“CloudBlockBlob”（您是否缺少 using 指令或程序集引用？） 2018-09-25T07:34:11.128 [错误] BlobTriggerCSharp.csx(4,73)：错误 CS0246：找不到类型或命名空间名称“CloudBlockBlob”（您是否缺少 using 指令或程序集引用？）

Answer 1

没有Microsoft.WindowsAzure.Storage.Blob 程序集，它是包含在Microsoft.WindowsAzure.Storage 中的命名空间。程序集和命名空间应如下使用。

#r "Microsoft.WindowsAzure.Storage"

using Microsoft.WindowsAzure.Storage.Blob;

而CloudBlockBlob不能直接获取Length属性，我们必须先获取blob属性。

await uploadedVideo.FetchAttributesAsync();
log.LogInformation($"C# Blob trigger function Processed blob\n Name:{name} \n Size: {uploadedVideo.Properties.Length} Bytes");