azure - 如何从关联的 Blob 容器中的现有 Blob 创建 Assets ？

Question

我需要将文件从本地系统上传到 azure 媒体服务。我已使用 HTML5 uploader (浏览器 block 上传)将内容从客户端上传到 AMS。引用自, http://gauravmantri.com/2013/02/16/uploading-large-files-in-windows-azure-blob-存储使用共享访问签名-html-和-javascript。

现在我需要将上传的文件从 Blob 存储移动到 Azure 媒体服务作为 Assets 并发布。如何实现这一目标。任何人都可以提供此过程的示例。

Answer 1

从此链接:Copying an Existing Blob into a Media Services Asset v2

⚠️ 媒体服务 API v2(已过时，v2 将于 2024 年 2 月 29 日停用)

/// <summary>
    /// Creates a new asset and copies blobs from the specifed storage account.
    /// </summary>
    /// <param name="mediaBlobContainer">The specified blob container.</param>
    /// <returns>The new asset.</returns>
    static public IAsset CreateAssetFromExistingBlobs(CloudBlobContainer mediaBlobContainer)
    {
        // Create a new asset. 
        IAsset asset = _context.Assets.Create("CopyBlob_" + Guid.NewGuid(), AssetCreationOptions.None);

        IAccessPolicy writePolicy = _context.AccessPolicies.Create("writePolicy", TimeSpan.FromHours(24), AccessPermissions.Write);
        ILocator destinationLocator = _context.Locators.CreateLocator(LocatorType.Sas, asset, writePolicy);

        CloudBlobClient destBlobStorage = _destinationStorageAccount.CreateCloudBlobClient();

        // Get the asset container URI and Blob copy from mediaContainer to assetContainer. 
        string destinationContainerName = (new Uri(destinationLocator.Path)).Segments[1];

        CloudBlobContainer assetContainer = destBlobStorage.GetContainerReference(destinationContainerName);

        if (assetContainer.CreateIfNotExists())
        {
            assetContainer.SetPermissions(new BlobContainerPermissions
            {
                PublicAccess = BlobContainerPublicAccessType.Blob
            });
        }

        var blobList = mediaBlobContainer.ListBlobs();
        foreach (var sourceBlob in blobList)
        {
            var assetFile = asset.AssetFiles.Create((sourceBlob as ICloudBlob).Name);
            CopyBlob(sourceBlob as ICloudBlob, assetContainer);
            assetFile.ContentFileSize = (sourceBlob as ICloudBlob).Properties.Length;
            assetFile.Update();
        }

        destinationLocator.Delete();
        writePolicy.Delete();

        // Since we copied a set of Smooth Streaming files, 
        // set the .ism file to be the primary file. 
        SetISMFileAsPrimary(asset);

        return asset;
    }