Class BlobContentStore

Implementation of IContentStore that downloads and stores update content in Azure Blob Storage

Inheritance

System.Object

BlobContentStore

Implements

IContentStore

Namespace: Microsoft.PackageGraph.Storage.Azure

Assembly: package-graph-microsoft-update.dll

Syntax

public class BlobContentStore : IContentStore

Fields

PendingFileDownloads

List of pending downloads

Declaration

public ConcurrentDictionary<string, IContentFile> PendingFileDownloads

Field Value

Type	Description
System.Collections.Concurrent.ConcurrentDictionary<System.String, IContentFile>

Properties

DownloadedSize

The size in bytes of content downloaded during the current download operation

Declaration

public long DownloadedSize { get; }

Property Value

Type	Description
System.Int64

QueuedCount

The count of content files left to be downloaded in the current download operation

Declaration

public int QueuedCount { get; }

Property Value

Type	Description
System.Int32

QueuedSize

The size in bytes of content left to be downloaded in the current download operation

Declaration

public long QueuedSize { get; }

Property Value

Type	Description
System.Int64

Methods

Contains(IContentFile)

Checks if a content file has been downloaded

Declaration

public bool Contains(IContentFile file)

Parameters

Type	Name	Description
IContentFile	file	File to check if it was downloaded

Returns

Type	Description
System.Boolean	True if the file was downloaded, false otherwise

Contains(IContentFileDigest, out String)

Checks if an update file (by hash) has been downloaded

Declaration

public bool Contains(IContentFileDigest fileDigest, out string fileName)

Parameters

Type	Name	Description
IContentFileDigest	fileDigest	File hash to check if it was downloaded
System.String	fileName	If the store contains the file by hash, this parameter receives the original file name

Returns

Type	Description
System.Boolean	True if the file was downloaded, false otherwise

Download(IEnumerable<IContentFile>, CancellationToken)

Downloads the specified update content files.

Declaration

public void Download(IEnumerable<IContentFile> files, CancellationToken cancelToken)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<IContentFile>	files	List of update content files to download
System.Threading.CancellationToken	cancelToken	Cancellation token for aborting the operation

DownloadAsync(IContentFile, CancellationToken)

Downloads the specified update content file

Declaration

public Task DownloadAsync(IContentFile file, CancellationToken cancelToken)

Parameters

Type	Name	Description
IContentFile	file
System.Threading.CancellationToken	cancelToken

Returns

Type	Description
System.Threading.Tasks.Task

Get(IContentFile)

Gets a read only stream for an update content file

Declaration

public Stream Get(IContentFile contentFile)

Parameters

Type	Name	Description
IContentFile	contentFile

Returns

Type	Description
System.IO.Stream	Read only stream for the requested update content file

Get(IContentFileDigest)

Gets a read only stream for an update content file (by hash)

Declaration

public Stream Get(IContentFileDigest fileDigest)

Parameters

Type	Name	Description
IContentFileDigest	fileDigest	The update file (by hash) to open

Returns

Type	Description
System.IO.Stream	Read only stream for the requested update content file

GetUri(IContentFile)

Gets the source URI for the update content file

Declaration

public string GetUri(IContentFile updateFile)

Parameters

Type	Name	Description
IContentFile	updateFile	The update file

Returns

Type	Description
System.String	Source Uri for the content file

GetUri(IContentFileDigest)

Gets an URI for the content file (by hash)

Declaration

public string GetUri(IContentFileDigest fileDigest)

Parameters

Type	Name	Description
IContentFileDigest	fileDigest	The update file hash

Returns

Type	Description
System.String	Uri to content file

OpenOrCreate(CloudBlobClient, String)

Opens an exiting or creates a new IContentStore with storage in the specified Azure Blob account and container

Declaration

public static BlobContentStore OpenOrCreate(CloudBlobClient client, string containerName)

Parameters

Type	Name	Description
Microsoft.Azure.Storage.Blob.CloudBlobClient	client	The Azure Blob client to use
System.String	containerName	The container name where to store update content

Returns

Type	Description
BlobContentStore

Events

Progress

Raised on progress for long running content store operations

Declaration

public event EventHandler<ContentOperationProgress> Progress

Event Type

Type	Description
System.EventHandler<ContentOperationProgress>	Progress data.

Implements

IContentStore