什么时候在 azure 中创建块 blob?
When was a block blob created in azure?
blob 引用包含一个 Properties
属性,它的 LastModified
为 DateTimeOffset?
。但是,我找不到 blob 的创建日期(时间)。是否有我可以使用的标准 API 或者我需要将其存储在元数据中?
public async Task<IBlobMeta> GetBlobMetaAsync(string blobId)
{
if (IsNullOrWhiteSpace(blobId))
throw new ArgumentException("Value cannot be null or whitespace.", nameof(blobId));
var blob = await EnsureGetBlobById(blobId);
await blob.FetchAttributesAsync();
string clientBlobName;
blob.Metadata.TryGetValue(BlobNameMetaKey, out clientBlobName);
var length = blob.Properties.Length;
var md5 = blob.Properties.ContentMD5;
var lastModified = blob.Properties.LastModified.Value.ToUniversalTime().DateTime;
var dateCreated= blob.Properties.???????;
return new AzureBlobMeta(blobId, clientBlobName, length, md5, dateCreated);
}
Is there a standard API I can use or I need to store that in the meta?
从今天开始,您需要以 blob 元数据的形式存储此信息。没有 API 会告诉您何时创建了 blob。 blob 的 Last Modified
属性 告诉您上次修改 blob 的时间。这可能是因为 blob 的内容已更改,或者它的属性或元数据已更改。
已将 Created
日期 属性 添加到存储客户端库中,从 version 9.2.0 开始:
Blobs: Added support for blob creation time property.
(自 2018 年 5 月 23 日起在 Nuget 上可用)
在BlobProperties.cs中是这样声明的:
/// <summary>
/// Gets the the creation time for the blob, expressed as a UTC value.
/// </summary>
/// <value>A <see cref="DateTimeOffset"/> containing the blob's creation time, in UTC format.</value>
public DateTimeOffset? Created { get; internal set; }
类型为可为空的DateTimeOffset,等同于LastModified
属性.
值的来源来自RESTAPI中的x-ms-creation-time
header,在version 2017-11-09中添加:
x-ms-creation-time
Version 2017-11-09 and newer. The date/time at which the blob was created. The date format follows RFC 1123.
它在 class CloudBlob
中可用,然后 Properties.Created
包 Microsoft.Azure.Storage.Blob
blob 引用包含一个 Properties
属性,它的 LastModified
为 DateTimeOffset?
。但是,我找不到 blob 的创建日期(时间)。是否有我可以使用的标准 API 或者我需要将其存储在元数据中?
public async Task<IBlobMeta> GetBlobMetaAsync(string blobId)
{
if (IsNullOrWhiteSpace(blobId))
throw new ArgumentException("Value cannot be null or whitespace.", nameof(blobId));
var blob = await EnsureGetBlobById(blobId);
await blob.FetchAttributesAsync();
string clientBlobName;
blob.Metadata.TryGetValue(BlobNameMetaKey, out clientBlobName);
var length = blob.Properties.Length;
var md5 = blob.Properties.ContentMD5;
var lastModified = blob.Properties.LastModified.Value.ToUniversalTime().DateTime;
var dateCreated= blob.Properties.???????;
return new AzureBlobMeta(blobId, clientBlobName, length, md5, dateCreated);
}
Is there a standard API I can use or I need to store that in the meta?
从今天开始,您需要以 blob 元数据的形式存储此信息。没有 API 会告诉您何时创建了 blob。 blob 的 Last Modified
属性 告诉您上次修改 blob 的时间。这可能是因为 blob 的内容已更改,或者它的属性或元数据已更改。
已将 Created
日期 属性 添加到存储客户端库中,从 version 9.2.0 开始:
Blobs: Added support for blob creation time property.
(自 2018 年 5 月 23 日起在 Nuget 上可用)
在BlobProperties.cs中是这样声明的:
/// <summary>
/// Gets the the creation time for the blob, expressed as a UTC value.
/// </summary>
/// <value>A <see cref="DateTimeOffset"/> containing the blob's creation time, in UTC format.</value>
public DateTimeOffset? Created { get; internal set; }
类型为可为空的DateTimeOffset,等同于LastModified
属性.
值的来源来自RESTAPI中的x-ms-creation-time
header,在version 2017-11-09中添加:
x-ms-creation-time
Version 2017-11-09 and newer. The date/time at which the blob was created. The date format follows RFC 1123.
它在 class CloudBlob
中可用,然后 Properties.Created
包 Microsoft.Azure.Storage.Blob