Azure Blob存储，如何实现任何文档或文件的版本

Question

在Azure Blob存储中，我想存储同一文件(文件名)的多个版本，我的意思是如何在Azure Blob存储中实现版本控制。

Answer 1

Azure Blob 版本控制现已全面推出。 从 Azure 门户，在“数据保护”>>“跟踪”>>“打开版本控制”选项下可用。 这将彻底解决您的问题。下面的链接提供了有关 Azure Blob 存储中文档版本控制的完整指南，其中包含 C# 代码示例。 https://subhankarsarkar.com/document-versioning-with-azure-blob-storage/

按版本下载文件的代码示例

public async Task<byte[]> DownloadBlobAsync(string fileToDownload, string fileVersion)
{
  using (var ms = new MemoryStream())
  {
    var blobClient = BlobContainerClient.GetBlockBlobClient(fileToDownload);
    // WithVersion() is the key piece here
    var blob = blobClient.WithVersion(fileVersion);
    await blob.DownloadToAsync(ms);
    return ms.ToArray();
  }
}

将文件恢复到特定版本

public void RestoreFileToSpecificVersion(string storageAccountName, string containerName, string fileName, string sourceVersion)
{
    var blobClient = BlobContainerClient.GetBlockBlobClient(fileName); // this is pointing to the current version
    //versionid={} is the most important piece here
    var sourceBlobUri = new Uri(
    string.Format("https://{0}.blob.core.windows.net/{1}/{2}?versionid={3}",
    storageAccountName, containerName, fileName, sourceVersion));

    // Since it will copy in the same storage account's container, it's a synchronous process
    // Copy Operation will make the specic version as current version
    // See https://learn.microsoft.com/en-us/rest/api/storageservices/copy-blob-from-url#request-headers
    blobClient.StartCopyFromUri(sourceBlobUri);
}

按版本删除文件

public async Task DeleteSpecificVersion(string fileName, string versionToDelete)
{
   var blobClient = BlobContainerClient.GetBlockBlobClient(fileName).WithVersion(versionToDelete);
   await blobClient.DeleteAsync();
}