c# - 如何修复在同一存储帐户内将数据从 blob 发送到文件共享的问题？

Question

我正在尝试将数据从 Blob 容器发送到文件共享，这是我正在使用的代码，但令人惊讶的是它不起作用:

public static void MoveFileBlobToFileShare(string shareName, string fileName, string sourceDirName, string destinationDirName, string container, string destinationFileName = "")
{
var blobServiceClient = Zeus.AzureStorage.Common.CreateblobServiceClient();
            var containerClient = blobServiceClient.GetBlobContainerClient(container);
            var blobClient = containerClient.GetBlobClient(sourceDirName + "/" + fileName);
            var fileSas = blobClient.GenerateSasUri(Azure.Storage.Sas.BlobSasPermissions.Read, DateTime.UtcNow.AddHours(24));
            var shareClient = Common.CreateSMBClientFromConnectionString(shareName);
            ShareDirectoryClient directory = shareClient.GetDirectoryClient(destinationDirName);
            ShareFileClient file = string.Equals(string.Empty, destinationFileName) ?
                directory.GetFileClient(fileName) : directory.GetFileClient(destinationFileName);
            file.StartCopy(fileSas);
            blobClient.Delete();
}

有没有办法只使用blobClient.URI并摆脱fileSAS

我收到错误:

The specified blob does not exist.
RequestId:b19857e0-001a-0008-670a-5a8332000000
Time:2022-04-27T07:46:55.4219904Z
Status: 404 (The specified blob does not exist.)
ErrorCode: CannotVerifyCopySource

Content:
<?xml version="1.0" encoding="utf-8"?><Error><Code>CannotVerifyCopySource</Code><Message>The specified blob does not exist.
RequestId:b19857e0-001a-0008-670a-5a8332000000
Time:2022-04-27T07:46:55.4219904Z</Message></Error>

Headers:
x-ms-request-id: b19857e0-001a-0008-670a-5a8332000000
x-ms-client-request-id: 697e573f-1ef0-47e5-971e-97f67b4fa083
x-ms-version: 2021-04-10
x-ms-error-code: CannotVerifyCopySource
Content-Length: 225
Content-Type: application/xml
Date: Wed, 27 Apr 2022 07:46:55 GMT
Server: Windows-Azure-File/1.0 Microsoft-HTTPAPI/2.0

Answer 1

问题是您开始复制操作但没有等待它完成。相反，您删除作为复制操作的源文件

file.StartCopy(fileSas);

此调用启动复制操作。它在后台运行。它返回 ShareFileCopyInfo您可以检查实例以查看操作的状态。属性 CopyStatus 是一个枚举，其值为 Aborted、Failed、Pending 和 Success，请参阅 the docs .

我怀疑在您的情况下，当您调用 blobClient.Delete(); 时，操作仍处于挂起状态。

根据the official example您可以执行此操作以等待复制操作完成:

        // Start the copy operation
        file.StartCopy(fileSas);

        if (await file.ExistsAsync())
        {
            Console.WriteLine($"{sourceFile.Uri} copied to {destFile.Uri}");
        }

另一个选项是轮询是否完成。