PageBlobClient class

  • Reference
Package:
@azure/storage-blob

PageBlobClient defines a set of operations applicable to page blobs.

Extends
BlobClient

Constructors

PageBlobClient(string, PipelineLike)

Creates an instance of PageBlobClient.
PageBlobClient(string, StorageSharedKeyCredential | AnonymousCredential | TokenCredential, StoragePipelineOptions)

Creates an instance of PageBlobClient. This method accepts an encoded URL or non-encoded URL pointing to a blob. Encoded URL string will NOT be escaped twice, only special characters in URL path will be escaped. If a blob name includes ? or %, blob name must be encoded in the URL.
PageBlobClient(string, string, string, StoragePipelineOptions)

Creates an instance of PageBlobClient.

Properties

containerName

The name of the storage container the blob is associated with.
name

The name of the blob.

Inherited Properties

accountName
credential

Such as AnonymousCredential, StorageSharedKeyCredential or any credential from the @azure/identity package to authenticate requests to the service. You can also provide an object that implements the TokenCredential interface. If not specified, AnonymousCredential is used.
url

Encoded URL string value.

Methods

clearPages(number, number, PageBlobClearPagesOptions)

Frees the specified pages from the page blob.

See https://docs.microsoft.com/rest/api/storageservices/put-page
create(number, PageBlobCreateOptions)

Creates a page blob of the specified length. Call uploadPages to upload data data to a page blob.

See https://docs.microsoft.com/rest/api/storageservices/put-blob
createIfNotExists(number, PageBlobCreateIfNotExistsOptions)

Creates a page blob of the specified length. Call uploadPages to upload data data to a page blob. If the blob with the same name already exists, the content of the existing blob will remain unchanged.

See https://docs.microsoft.com/rest/api/storageservices/put-blob
getPageRanges(number, number, PageBlobGetPageRangesOptions)

Returns the list of valid page ranges for a page blob or snapshot of a page blob.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges
getPageRangesDiff(number, number, string, PageBlobGetPageRangesDiffOptions)

Gets the collection of page ranges that differ between a specified snapshot and this page blob.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges
getPageRangesDiffForManagedDisks(number, number, string, PageBlobGetPageRangesDiffOptions)

Gets the collection of page ranges that differ between a specified snapshot and this page blob for managed disks.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges
listPageRanges(number, number, PageBlobListPageRangesOptions)

Returns an async iterable iterator to list of page ranges for a page blob.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges

.byPage() returns an async iterable iterator to list of page ranges for a page blob.

Example using for await syntax:

// Get the pageBlobClient before you run these snippets,
// Can be obtained from `blobServiceClient.getContainerClient("<your-container-name>").getPageBlobClient("<your-blob-name>");`
let i = 1;
for await (const pageRange of pageBlobClient.listPageRanges()) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

Example using iter.next():

let i = 1;
let iter = pageBlobClient.listPageRanges();
let pageRangeItem = await iter.next();
while (!pageRangeItem.done) {
  console.log(`Page range ${i++}: ${pageRangeItem.value.start} - ${pageRangeItem.value.end}, IsClear: ${pageRangeItem.value.isClear}`);
  pageRangeItem = await iter.next();
}

Example using byPage():

// passing optional maxPageSize in the page settings
let i = 1;
for await (const response of pageBlobClient.listPageRanges().byPage({ maxPageSize: 20 })) {
  for (const pageRange of response) {
    console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
  }
}

Example using paging with a marker:

let i = 1;
let iterator = pageBlobClient.listPageRanges().byPage({ maxPageSize: 2 });
let response = (await iterator.next()).value;

// Prints 2 page ranges
for (const pageRange of response) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

// Gets next marker
let marker = response.continuationToken;

// Passing next marker as continuationToken

iterator = pageBlobClient.listPageRanges().byPage({ continuationToken: marker, maxPageSize: 10 });
response = (await iterator.next()).value;

// Prints 10 page ranges
for (const blob of response) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}
listPageRangesDiff(number, number, string, PageBlobListPageRangesDiffOptions)

Returns an async iterable iterator to list of page ranges that differ between a specified snapshot and this page blob.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges

.byPage() returns an async iterable iterator to list of page ranges that differ between a specified snapshot and this page blob.

Example using for await syntax:

// Get the pageBlobClient before you run these snippets,
// Can be obtained from `blobServiceClient.getContainerClient("<your-container-name>").getPageBlobClient("<your-blob-name>");`
let i = 1;
for await (const pageRange of pageBlobClient.listPageRangesDiff()) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

Example using iter.next():

let i = 1;
let iter = pageBlobClient.listPageRangesDiff();
let pageRangeItem = await iter.next();
while (!pageRangeItem.done) {
  console.log(`Page range ${i++}: ${pageRangeItem.value.start} - ${pageRangeItem.value.end}, IsClear: ${pageRangeItem.value.isClear}`);
  pageRangeItem = await iter.next();
}

Example using byPage():

// passing optional maxPageSize in the page settings
let i = 1;
for await (const response of pageBlobClient.listPageRangesDiff().byPage({ maxPageSize: 20 })) {
  for (const pageRange of response) {
    console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
  }
}

Example using paging with a marker:

let i = 1;
let iterator = pageBlobClient.listPageRangesDiff().byPage({ maxPageSize: 2 });
let response = (await iterator.next()).value;

// Prints 2 page ranges
for (const pageRange of response) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

// Gets next marker
let marker = response.continuationToken;

// Passing next marker as continuationToken

iterator = pageBlobClient.listPageRangesDiff().byPage({ continuationToken: marker, maxPageSize: 10 });
response = (await iterator.next()).value;

// Prints 10 page ranges
for (const blob of response) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}
resize(number, PageBlobResizeOptions)

Resizes the page blob to the specified size (which must be a multiple of 512).

See https://docs.microsoft.com/rest/api/storageservices/set-blob-properties
startCopyIncremental(string, PageBlobStartCopyIncrementalOptions)

Begins an operation to start an incremental copy from one page blob's snapshot to this page blob. The snapshot is copied such that only the differential changes between the previously copied snapshot are transferred to the destination. The copied snapshots are complete copies of the original snapshot and can be read or copied from as usual.

See https://docs.microsoft.com/rest/api/storageservices/incremental-copy-blob See https://docs.microsoft.com/en-us/azure/virtual-machines/windows/incremental-snapshots
updateSequenceNumber(SequenceNumberActionType, number, PageBlobUpdateSequenceNumberOptions)

Sets a page blob's sequence number.

See https://docs.microsoft.com/en-us/rest/api/storageservices/set-blob-properties
uploadPages(HttpRequestBody, number, number, PageBlobUploadPagesOptions)

Writes 1 or more pages to the page blob. The start and end offsets must be a multiple of 512.

See https://docs.microsoft.com/rest/api/storageservices/put-page
uploadPagesFromURL(string, number, number, number, PageBlobUploadPagesFromURLOptions)

The Upload Pages operation writes a range of pages to a page blob where the contents are read from a URL.

See https://docs.microsoft.com/en-us/rest/api/storageservices/put-page-from-url
withSnapshot(string)

Creates a new PageBlobClient object identical to the source but with the specified snapshot timestamp. Provide "" will remove the snapshot and return a Client to the base blob.

Inherited Methods

abortCopyFromURL(string, BlobAbortCopyFromURLOptions)

Aborts a pending asynchronous Copy Blob operation, and leaves a destination blob with zero length and full metadata. Version 2012-02-12 and newer.

See https://docs.microsoft.com/en-us/rest/api/storageservices/abort-copy-blob
beginCopyFromURL(string, BlobBeginCopyFromURLOptions)

Asynchronously copies a blob to a destination within the storage account. This method returns a long running operation poller that allows you to wait indefinitely until the copy is completed. You can also cancel a copy before it is completed by calling cancelOperation on the poller. Note that the onProgress callback will not be invoked if the operation completes in the first request, and attempting to cancel a completed copy will result in an error being thrown.

In version 2012-02-12 and later, the source for a Copy Blob operation can be a committed blob in any Azure storage account. Beginning with version 2015-02-21, the source for a Copy Blob operation can be an Azure file in any Azure storage account. Only storage accounts created on or after June 7th, 2012 allow the Copy Blob operation to copy from another storage account.

See https://docs.microsoft.com/en-us/rest/api/storageservices/copy-blob

Example using automatic polling:

const copyPoller = await blobClient.beginCopyFromURL('url');
const result = await copyPoller.pollUntilDone();

Example using manual polling:

const copyPoller = await blobClient.beginCopyFromURL('url');
while (!poller.isDone()) {
   await poller.poll();
}
const result = copyPoller.getResult();

Example using progress updates:

const copyPoller = await blobClient.beginCopyFromURL('url', {
  onProgress(state) {
    console.log(`Progress: ${state.copyProgress}`);
  }
});
const result = await copyPoller.pollUntilDone();

Example using a changing polling interval (default 15 seconds):

const copyPoller = await blobClient.beginCopyFromURL('url', {
  intervalInMs: 1000 // poll blob every 1 second for copy progress
});
const result = await copyPoller.pollUntilDone();

Example using copy cancellation:

const copyPoller = await blobClient.beginCopyFromURL('url');
// cancel operation after starting it.
try {
  await copyPoller.cancelOperation();
  // calls to get the result now throw PollerCancelledError
  await copyPoller.getResult();
} catch (err) {
  if (err.name === 'PollerCancelledError') {
    console.log('The copy was cancelled.');
  }
}
createSnapshot(BlobCreateSnapshotOptions)

Creates a read-only snapshot of a blob.

See https://docs.microsoft.com/en-us/rest/api/storageservices/snapshot-blob
delete(BlobDeleteOptions)

Marks the specified blob or snapshot for deletion. The blob is later deleted during garbage collection. Note that in order to delete a blob, you must delete all of its snapshots. You can delete both at the same time with the Delete Blob operation.

See https://docs.microsoft.com/en-us/rest/api/storageservices/delete-blob
deleteIfExists(BlobDeleteOptions)

Marks the specified blob or snapshot for deletion if it exists. The blob is later deleted during garbage collection. Note that in order to delete a blob, you must delete all of its snapshots. You can delete both at the same time with the Delete Blob operation.

See https://docs.microsoft.com/en-us/rest/api/storageservices/delete-blob
deleteImmutabilityPolicy(BlobDeleteImmutabilityPolicyOptions)

Delete the immutablility policy on the blob.
download(number, number, BlobDownloadOptions)

Reads or downloads a blob from the system, including its metadata and properties. You can also call Get Blob to read a snapshot.

  • In Node.js, data returns in a Readable stream readableStreamBody
  • In browsers, data returns in a promise blobBody

See https://docs.microsoft.com/en-us/rest/api/storageservices/get-blob
downloadToBuffer(Buffer, number, number, BlobDownloadToBufferOptions)

ONLY AVAILABLE IN NODE.JS RUNTIME.

Downloads an Azure Blob in parallel to a buffer. Offset and count are optional, downloads the entire blob if they are not provided.

Warning: Buffers can only support files up to about one gigabyte on 32-bit systems or about two gigabytes on 64-bit systems due to limitations of Node.js/V8. For blobs larger than this size, consider downloadToFile.
downloadToBuffer(number, number, BlobDownloadToBufferOptions)

ONLY AVAILABLE IN NODE.JS RUNTIME.

Downloads an Azure Blob in parallel to a buffer. Offset and count are optional, downloads the entire blob if they are not provided.

Warning: Buffers can only support files up to about one gigabyte on 32-bit systems or about two gigabytes on 64-bit systems due to limitations of Node.js/V8. For blobs larger than this size, consider downloadToFile.
downloadToFile(string, number, number, BlobDownloadOptions)

ONLY AVAILABLE IN NODE.JS RUNTIME.

Downloads an Azure Blob to a local file. Fails if the the given file path already exits. Offset and count are optional, pass 0 and undefined respectively to download the entire blob.
exists(BlobExistsOptions)

Returns true if the Azure blob resource represented by this client exists; false otherwise.

NOTE: use this function with care since an existing blob might be deleted by other clients or applications. Vice versa new blobs might be added by other clients or applications after this function completes.
generateSasUrl(BlobGenerateSasUrlOptions)

Only available for BlobClient constructed with a shared key credential.

Generates a Blob Service Shared Access Signature (SAS) URI based on the client properties and parameters passed in. The SAS is signed by the shared key credential of the client.

See https://docs.microsoft.com/en-us/rest/api/storageservices/constructing-a-service-sas
getAppendBlobClient()

Creates a AppendBlobClient object.
getBlobLeaseClient(string)

Get a BlobLeaseClient that manages leases on the blob.
getBlockBlobClient()

Creates a BlockBlobClient object.
getPageBlobClient()

Creates a PageBlobClient object.
getProperties(BlobGetPropertiesOptions)

Returns all user-defined metadata, standard HTTP properties, and system properties for the blob. It does not return the content of the blob.

See https://docs.microsoft.com/en-us/rest/api/storageservices/get-blob-properties

WARNING: The metadata object returned in the response will have its keys in lowercase, even if they originally contained uppercase characters. This differs from the metadata keys returned by the methods of ContainerClient that list blobs using the includeMetadata option, which will retain their original casing.
getTags(BlobGetTagsOptions)

Gets the tags associated with the underlying blob.
setAccessTier(string, BlobSetTierOptions)

Sets the tier on a blob. The operation is allowed on a page blob in a premium storage account and on a block blob in a blob storage account (locally redundant storage only). A premium page blob's tier determines the allowed size, IOPS, and bandwidth of the blob. A block blob's tier determines Hot/Cool/Archive storage type. This operation does not update the blob's ETag.

See https://docs.microsoft.com/en-us/rest/api/storageservices/set-blob-tier
setHTTPHeaders(BlobHTTPHeaders, BlobSetHTTPHeadersOptions)

Sets system properties on the blob.

If no value provided, or no value provided for the specified blob HTTP headers, these blob HTTP headers without a value will be cleared.

See https://docs.microsoft.com/en-us/rest/api/storageservices/set-blob-properties
setImmutabilityPolicy(BlobImmutabilityPolicy, BlobSetImmutabilityPolicyOptions)

Set immutablility policy on the blob.
setLegalHold(boolean, BlobSetLegalHoldOptions)

Set legal hold on the blob.
setMetadata(Metadata, BlobSetMetadataOptions)

Sets user-defined metadata for the specified blob as one or more name-value pairs.

If no option provided, or no metadata defined in the parameter, the blob metadata will be removed.

See https://docs.microsoft.com/en-us/rest/api/storageservices/set-blob-metadata
setTags(Tags, BlobSetTagsOptions)

Sets tags on the underlying blob. A blob can have up to 10 tags. Tag keys must be between 1 and 128 characters. Tag values must be between 0 and 256 characters. Valid tag key and value characters include lower and upper case letters, digits (0-9), space (' '), plus ('+'), minus ('-'), period ('.'), foward slash ('/'), colon (':'), equals ('='), and underscore ('_').
syncCopyFromURL(string, BlobSyncCopyFromURLOptions)

The synchronous Copy From URL operation copies a blob or an internet resource to a new blob. It will not return a response until the copy is complete.

See https://docs.microsoft.com/en-us/rest/api/storageservices/copy-blob-from-url
undelete(BlobUndeleteOptions)

Restores the contents and metadata of soft deleted blob and any associated soft deleted snapshots. Undelete Blob is supported only on version 2017-07-29 or later.

See https://docs.microsoft.com/en-us/rest/api/storageservices/undelete-blob
withVersion(string)

Creates a new BlobClient object pointing to a version of this blob. Provide "" will remove the versionId and return a Client to the base blob.

Constructor Details

PageBlobClient(string, PipelineLike)

Creates an instance of PageBlobClient.

new PageBlobClient(url: string, pipeline: PipelineLike)

Parameters

url

string

A URL string pointing to Azure Storage page blob, such as "https://myaccount.blob.core.windows.net/mycontainer/pageblob". You can append a SAS if using AnonymousCredential, such as "https://myaccount.blob.core.windows.net/mycontainer/pageblob?sasString". This method accepts an encoded URL or non-encoded URL pointing to a blob. Encoded URL string will NOT be escaped twice, only special characters in URL path will be escaped. However, if a blob name includes ? or %, blob name must be encoded in the URL. Such as a blob named "my?blob%", the URL should be "https://myaccount.blob.core.windows.net/mycontainer/my%3Fblob%25".

pipeline
PipelineLike

Call newPipeline() to create a default pipeline, or provide a customized pipeline.

PageBlobClient(string, StorageSharedKeyCredential | AnonymousCredential | TokenCredential, StoragePipelineOptions)

Creates an instance of PageBlobClient. This method accepts an encoded URL or non-encoded URL pointing to a blob. Encoded URL string will NOT be escaped twice, only special characters in URL path will be escaped. If a blob name includes ? or %, blob name must be encoded in the URL.

new PageBlobClient(url: string, credential: StorageSharedKeyCredential | AnonymousCredential | TokenCredential, options?: StoragePipelineOptions)

Parameters

url

string

A Client string pointing to Azure Storage page blob, such as "https://myaccount.blob.core.windows.net/mycontainer/pageblob". You can append a SAS if using AnonymousCredential, such as "https://myaccount.blob.core.windows.net/mycontainer/pageblob?sasString".

credential

StorageSharedKeyCredential | AnonymousCredential | TokenCredential

Such as AnonymousCredential, StorageSharedKeyCredential or any credential from the @azure/identity package to authenticate requests to the service. You can also provide an object that implements the TokenCredential interface. If not specified, AnonymousCredential is used.

options
StoragePipelineOptions

Optional. Options to configure the HTTP pipeline.

PageBlobClient(string, string, string, StoragePipelineOptions)

Creates an instance of PageBlobClient.

new PageBlobClient(connectionString: string, containerName: string, blobName: string, options?: StoragePipelineOptions)

Parameters

connectionString

string

Account connection string or a SAS connection string of an Azure storage account. [ Note - Account connection string can only be used in NODE.JS runtime. ] Account connection string example - DefaultEndpointsProtocol=https;AccountName=myaccount;AccountKey=accountKey;EndpointSuffix=core.windows.net SAS connection string example - BlobEndpoint=https://myaccount.blob.core.windows.net/;QueueEndpoint=https://myaccount.queue.core.windows.net/;FileEndpoint=https://myaccount.file.core.windows.net/;TableEndpoint=https://myaccount.table.core.windows.net/;SharedAccessSignature=sasString

containerName

string

Container name.

blobName

string

Blob name.

options
StoragePipelineOptions

Optional. Options to configure the HTTP pipeline.

Property Details

containerName

The name of the storage container the blob is associated with.

string containerName

Property Value

string

name

The name of the blob.

string name

Property Value

string

Inherited Property Details

accountName 

accountName: string

Property Value

string

Inherited From BlobClient.accountName

credential

Such as AnonymousCredential, StorageSharedKeyCredential or any credential from the @azure/identity package to authenticate requests to the service. You can also provide an object that implements the TokenCredential interface. If not specified, AnonymousCredential is used.

credential: StorageSharedKeyCredential | AnonymousCredential | TokenCredential

Property Value

StorageSharedKeyCredential | AnonymousCredential | TokenCredential

Inherited From BlobClient.credential

url

Encoded URL string value.

url: string

Property Value

string

Inherited From BlobClient.url

Method Details

clearPages(number, number, PageBlobClearPagesOptions)

Frees the specified pages from the page blob.

See https://docs.microsoft.com/rest/api/storageservices/put-page

function clearPages(offset?: number, count?: number, options?: PageBlobClearPagesOptions): Promise<PageBlobClearPagesResponse>

Parameters

offset

number

Starting byte position of the pages to clear.

count

number

Number of bytes to clear.

options
PageBlobClearPagesOptions

Options to the Page Blob Clear Pages operation.

Returns

Promise<PageBlobClearPagesResponse>

Response data for the Page Blob Clear Pages operation.

create(number, PageBlobCreateOptions)

Creates a page blob of the specified length. Call uploadPages to upload data data to a page blob.

See https://docs.microsoft.com/rest/api/storageservices/put-blob

function create(size: number, options?: PageBlobCreateOptions): Promise<PageBlobCreateResponse>

Parameters

size

number

size of the page blob.

options
PageBlobCreateOptions

Options to the Page Blob Create operation.

Returns

Promise<PageBlobCreateResponse>

Response data for the Page Blob Create operation.

createIfNotExists(number, PageBlobCreateIfNotExistsOptions)

Creates a page blob of the specified length. Call uploadPages to upload data data to a page blob. If the blob with the same name already exists, the content of the existing blob will remain unchanged.

See https://docs.microsoft.com/rest/api/storageservices/put-blob

function createIfNotExists(size: number, options?: PageBlobCreateIfNotExistsOptions): Promise<PageBlobCreateIfNotExistsResponse>

Parameters

size

number

size of the page blob.

options
PageBlobCreateIfNotExistsOptions

Returns

Promise<PageBlobCreateIfNotExistsResponse>

getPageRanges(number, number, PageBlobGetPageRangesOptions)

Returns the list of valid page ranges for a page blob or snapshot of a page blob.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges

function getPageRanges(offset?: number, count?: number, options?: PageBlobGetPageRangesOptions): Promise<PageBlobGetPageRangesResponse>

Parameters

offset

number

Starting byte position of the page ranges.

count

number

Number of bytes to get.

options
PageBlobGetPageRangesOptions

Options to the Page Blob Get Ranges operation.

Returns

Promise<PageBlobGetPageRangesResponse>

Response data for the Page Blob Get Ranges operation.

getPageRangesDiff(number, number, string, PageBlobGetPageRangesDiffOptions)

Gets the collection of page ranges that differ between a specified snapshot and this page blob.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges

function getPageRangesDiff(offset: number, count: number, prevSnapshot: string, options?: PageBlobGetPageRangesDiffOptions): Promise<PageBlobGetPageRangesDiffResponse>

Parameters

offset

number

Starting byte position of the page blob

count

number

Number of bytes to get ranges diff.

prevSnapshot

string

Timestamp of snapshot to retrieve the difference.

options
PageBlobGetPageRangesDiffOptions

Options to the Page Blob Get Page Ranges Diff operation.

Returns

Promise<PageBlobGetPageRangesDiffResponse>

Response data for the Page Blob Get Page Range Diff operation.

getPageRangesDiffForManagedDisks(number, number, string, PageBlobGetPageRangesDiffOptions)

Gets the collection of page ranges that differ between a specified snapshot and this page blob for managed disks.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges

function getPageRangesDiffForManagedDisks(offset: number, count: number, prevSnapshotUrl: string, options?: PageBlobGetPageRangesDiffOptions): Promise<PageBlobGetPageRangesDiffResponse>

Parameters

offset

number

Starting byte position of the page blob

count

number

Number of bytes to get ranges diff.

prevSnapshotUrl

string

URL of snapshot to retrieve the difference.

options
PageBlobGetPageRangesDiffOptions

Options to the Page Blob Get Page Ranges Diff operation.

Returns

Promise<PageBlobGetPageRangesDiffResponse>

Response data for the Page Blob Get Page Range Diff operation.

listPageRanges(number, number, PageBlobListPageRangesOptions)

Returns an async iterable iterator to list of page ranges for a page blob.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges

.byPage() returns an async iterable iterator to list of page ranges for a page blob.

Example using for await syntax:

// Get the pageBlobClient before you run these snippets,
// Can be obtained from `blobServiceClient.getContainerClient("<your-container-name>").getPageBlobClient("<your-blob-name>");`
let i = 1;
for await (const pageRange of pageBlobClient.listPageRanges()) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

Example using iter.next():

let i = 1;
let iter = pageBlobClient.listPageRanges();
let pageRangeItem = await iter.next();
while (!pageRangeItem.done) {
  console.log(`Page range ${i++}: ${pageRangeItem.value.start} - ${pageRangeItem.value.end}, IsClear: ${pageRangeItem.value.isClear}`);
  pageRangeItem = await iter.next();
}

Example using byPage():

// passing optional maxPageSize in the page settings
let i = 1;
for await (const response of pageBlobClient.listPageRanges().byPage({ maxPageSize: 20 })) {
  for (const pageRange of response) {
    console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
  }
}

Example using paging with a marker:

let i = 1;
let iterator = pageBlobClient.listPageRanges().byPage({ maxPageSize: 2 });
let response = (await iterator.next()).value;

// Prints 2 page ranges
for (const pageRange of response) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

// Gets next marker
let marker = response.continuationToken;

// Passing next marker as continuationToken

iterator = pageBlobClient.listPageRanges().byPage({ continuationToken: marker, maxPageSize: 10 });
response = (await iterator.next()).value;

// Prints 10 page ranges
for (const blob of response) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

function listPageRanges(offset?: number, count?: number, options?: PageBlobListPageRangesOptions): PagedAsyncIterableIterator<PageRangeInfo, PageBlobGetPageRangesResponseModel, PageSettings>

Parameters

offset

number

Starting byte position of the page ranges.

count

number

Number of bytes to get.

options
PageBlobListPageRangesOptions

Options to the Page Blob Get Ranges operation.

Returns

PagedAsyncIterableIterator<PageRangeInfo, PageBlobGetPageRangesResponseModel, PageSettings>

An asyncIterableIterator that supports paging.

listPageRangesDiff(number, number, string, PageBlobListPageRangesDiffOptions)

Returns an async iterable iterator to list of page ranges that differ between a specified snapshot and this page blob.

See https://docs.microsoft.com/rest/api/storageservices/get-page-ranges

.byPage() returns an async iterable iterator to list of page ranges that differ between a specified snapshot and this page blob.

Example using for await syntax:

// Get the pageBlobClient before you run these snippets,
// Can be obtained from `blobServiceClient.getContainerClient("<your-container-name>").getPageBlobClient("<your-blob-name>");`
let i = 1;
for await (const pageRange of pageBlobClient.listPageRangesDiff()) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

Example using iter.next():

let i = 1;
let iter = pageBlobClient.listPageRangesDiff();
let pageRangeItem = await iter.next();
while (!pageRangeItem.done) {
  console.log(`Page range ${i++}: ${pageRangeItem.value.start} - ${pageRangeItem.value.end}, IsClear: ${pageRangeItem.value.isClear}`);
  pageRangeItem = await iter.next();
}

Example using byPage():

// passing optional maxPageSize in the page settings
let i = 1;
for await (const response of pageBlobClient.listPageRangesDiff().byPage({ maxPageSize: 20 })) {
  for (const pageRange of response) {
    console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
  }
}

Example using paging with a marker:

let i = 1;
let iterator = pageBlobClient.listPageRangesDiff().byPage({ maxPageSize: 2 });
let response = (await iterator.next()).value;

// Prints 2 page ranges
for (const pageRange of response) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

// Gets next marker
let marker = response.continuationToken;

// Passing next marker as continuationToken

iterator = pageBlobClient.listPageRangesDiff().byPage({ continuationToken: marker, maxPageSize: 10 });
response = (await iterator.next()).value;

// Prints 10 page ranges
for (const blob of response) {
  console.log(`Page range ${i++}: ${pageRange.start} - ${pageRange.end}`);
}

function listPageRangesDiff(offset: number, count: number, prevSnapshot: string, options?: PageBlobListPageRangesDiffOptions): PagedAsyncIterableIterator<PageRangeInfo, PageBlobGetPageRangesDiffResponseModel, PageSettings>

Parameters

offset

number

Starting byte position of the page ranges.

count

number

Number of bytes to get.

prevSnapshot

string

Timestamp of snapshot to retrieve the difference.

options
PageBlobListPageRangesDiffOptions

Options to the Page Blob Get Ranges operation.

Returns

PagedAsyncIterableIterator<PageRangeInfo, PageBlobGetPageRangesDiffResponseModel, PageSettings>

An asyncIterableIterator that supports paging.

resize(number, PageBlobResizeOptions)

Resizes the page blob to the specified size (which must be a multiple of 512).

See https://docs.microsoft.com/rest/api/storageservices/set-blob-properties

function resize(size: number, options?: PageBlobResizeOptions): Promise<PageBlobResizeResponse>

Parameters

size

number

Target size

options
PageBlobResizeOptions

Options to the Page Blob Resize operation.

Returns

Promise<PageBlobResizeResponse>

Response data for the Page Blob Resize operation.

startCopyIncremental(string, PageBlobStartCopyIncrementalOptions)

Begins an operation to start an incremental copy from one page blob's snapshot to this page blob. The snapshot is copied such that only the differential changes between the previously copied snapshot are transferred to the destination. The copied snapshots are complete copies of the original snapshot and can be read or copied from as usual.

See https://docs.microsoft.com/rest/api/storageservices/incremental-copy-blob See https://docs.microsoft.com/en-us/azure/virtual-machines/windows/incremental-snapshots

function startCopyIncremental(copySource: string, options?: PageBlobStartCopyIncrementalOptions): Promise<PageBlobCopyIncrementalResponse>

Parameters

copySource

string

Specifies the name of the source page blob snapshot. For example, https://myaccount.blob.core.windows.net/mycontainer/myblob?snapshot=

options
PageBlobStartCopyIncrementalOptions

Options to the Page Blob Copy Incremental operation.

Returns

Promise<PageBlobCopyIncrementalResponse>

Response data for the Page Blob Copy Incremental operation.

updateSequenceNumber(SequenceNumberActionType, number, PageBlobUpdateSequenceNumberOptions)

Sets a page blob's sequence number.

See https://docs.microsoft.com/en-us/rest/api/storageservices/set-blob-properties

function updateSequenceNumber(sequenceNumberAction: SequenceNumberActionType, sequenceNumber?: number, options?: PageBlobUpdateSequenceNumberOptions): Promise<PageBlobUpdateSequenceNumberResponse>

Parameters

sequenceNumberAction
SequenceNumberActionType

Indicates how the service should modify the blob's sequence number.

sequenceNumber

number

Required if sequenceNumberAction is max or update

options
PageBlobUpdateSequenceNumberOptions

Options to the Page Blob Update Sequence Number operation.

Returns

Promise<PageBlobUpdateSequenceNumberResponse>

Response data for the Page Blob Update Sequence Number operation.

uploadPages(HttpRequestBody, number, number, PageBlobUploadPagesOptions)

Writes 1 or more pages to the page blob. The start and end offsets must be a multiple of 512.

See https://docs.microsoft.com/rest/api/storageservices/put-page

function uploadPages(body: HttpRequestBody, offset: number, count: number, options?: PageBlobUploadPagesOptions): Promise<PageBlobUploadPagesResponse>

Parameters

body
HttpRequestBody

Data to upload

offset

number

Offset of destination page blob

count

number

Content length of the body, also number of bytes to be uploaded

options
PageBlobUploadPagesOptions

Options to the Page Blob Upload Pages operation.

Returns

Promise<PageBlobUploadPagesResponse>

Response data for the Page Blob Upload Pages operation.

uploadPagesFromURL(string, number, number, number, PageBlobUploadPagesFromURLOptions)

The Upload Pages operation writes a range of pages to a page blob where the contents are read from a URL.

See https://docs.microsoft.com/en-us/rest/api/storageservices/put-page-from-url

function uploadPagesFromURL(sourceURL: string, sourceOffset: number, destOffset: number, count: number, options?: PageBlobUploadPagesFromURLOptions): Promise<PageBlobUploadPagesFromURLResponse>

Parameters

sourceURL

string

Specify a URL to the copy source, Shared Access Signature(SAS) maybe needed for authentication

sourceOffset

number

The source offset to copy from. Pass 0 to copy from the beginning of source page blob

destOffset

number

Offset of destination page blob

count

number

Number of bytes to be uploaded from source page blob

options
PageBlobUploadPagesFromURLOptions

Returns

Promise<PageBlobUploadPagesFromURLResponse>

withSnapshot(string)

Creates a new PageBlobClient object identical to the source but with the specified snapshot timestamp. Provide "" will remove the snapshot and return a Client to the base blob.

function withSnapshot(snapshot: string): PageBlobClient

Parameters

snapshot

string

The snapshot timestamp.

Returns

PageBlobClient

A new PageBlobClient object identical to the source but with the specified snapshot timestamp.

Inherited Method Details

abortCopyFromURL(string, BlobAbortCopyFromURLOptions)

Aborts a pending asynchronous Copy Blob operation, and leaves a destination blob with zero length and full metadata. Version 2012-02-12 and newer.

See https://docs.microsoft.com/en-us/rest/api/storageservices/abort-copy-blob

function abortCopyFromURL(copyId: string, options?: BlobAbortCopyFromURLOptions): Promise<BlobAbortCopyFromURLResponse>

Parameters

copyId

string

Id of the Copy From URL operation.

options
BlobAbortCopyFromURLOptions

Optional options to the Blob Abort Copy From URL operation.

Returns

Promise<BlobAbortCopyFromURLResponse>

Inherited From BlobClient.abortCopyFromURL

beginCopyFromURL(string, BlobBeginCopyFromURLOptions)

Asynchronously copies a blob to a destination within the storage account. This method returns a long running operation poller that allows you to wait indefinitely until the copy is completed. You can also cancel a copy before it is completed by calling cancelOperation on the poller. Note that the onProgress callback will not be invoked if the operation completes in the first request, and attempting to cancel a completed copy will result in an error being thrown.

In version 2012-02-12 and later, the source for a Copy Blob operation can be a committed blob in any Azure storage account. Beginning with version 2015-02-21, the source for a Copy Blob operation can be an Azure file in any Azure storage account. Only storage accounts created on or after June 7th, 2012 allow the Copy Blob operation to copy from another storage account.

See https://docs.microsoft.com/en-us/rest/api/storageservices/copy-blob

Example using automatic polling:

const copyPoller = await blobClient.beginCopyFromURL('url');
const result = await copyPoller.pollUntilDone();

Example using manual polling:

const copyPoller = await blobClient.beginCopyFromURL('url');
while (!poller.isDone()) {
   await poller.poll();
}
const result = copyPoller.getResult();

Example using progress updates:

const copyPoller = await blobClient.beginCopyFromURL('url', {
  onProgress(state) {
    console.log(`Progress: ${state.copyProgress}`);
  }
});
const result = await copyPoller.pollUntilDone();

Example using a changing polling interval (default 15 seconds):

const copyPoller = await blobClient.beginCopyFromURL('url', {
  intervalInMs: 1000 // poll blob every 1 second for copy progress
});
const result = await copyPoller.pollUntilDone();

Example using copy cancellation:

const copyPoller = await blobClient.beginCopyFromURL('url');
// cancel operation after starting it.
try {
  await copyPoller.cancelOperation();
  // calls to get the result now throw PollerCancelledError
  await copyPoller.getResult();
} catch (err) {
  if (err.name === 'PollerCancelledError') {
    console.log('The copy was cancelled.');
  }
}

function beginCopyFromURL(copySource: string, options?: BlobBeginCopyFromURLOptions): Promise<PollerLikeWithCancellation<PollOperationState<BlobBeginCopyFromURLResponse>, BlobBeginCopyFromURLResponse>>

Parameters

copySource

string

url to the source Azure Blob/File.

options
BlobBeginCopyFromURLOptions

Optional options to the Blob Start Copy From URL operation.

Returns

Promise<PollerLikeWithCancellation<PollOperationState<BlobBeginCopyFromURLResponse>, BlobBeginCopyFromURLResponse>>

Inherited From BlobClient.beginCopyFromURL

createSnapshot(BlobCreateSnapshotOptions)

Creates a read-only snapshot of a blob.

See https://docs.microsoft.com/en-us/rest/api/storageservices/snapshot-blob

function createSnapshot(options?: BlobCreateSnapshotOptions): Promise<BlobCreateSnapshotResponse>

Parameters

options
BlobCreateSnapshotOptions

Optional options to the Blob Create Snapshot operation.

Returns

Promise<BlobCreateSnapshotResponse>

Inherited From BlobClient.createSnapshot

delete(BlobDeleteOptions)

Marks the specified blob or snapshot for deletion. The blob is later deleted during garbage collection. Note that in order to delete a blob, you must delete all of its snapshots. You can delete both at the same time with the Delete Blob operation.

See https://docs.microsoft.com/en-us/rest/api/storageservices/delete-blob

function delete(options?: BlobDeleteOptions): Promise<BlobDeleteResponse>

Parameters

options
BlobDeleteOptions

Optional options to Blob Delete operation.

Returns

Promise<BlobDeleteResponse>

Inherited From BlobClient.delete

deleteIfExists(BlobDeleteOptions)

Marks the specified blob or snapshot for deletion if it exists. The blob is later deleted during garbage collection. Note that in order to delete a blob, you must delete all of its snapshots. You can delete both at the same time with the Delete Blob operation.

See https://docs.microsoft.com/en-us/rest/api/storageservices/delete-blob

function deleteIfExists(options?: BlobDeleteOptions): Promise<BlobDeleteIfExistsResponse>

Parameters

options
BlobDeleteOptions

Optional options to Blob Delete operation.

Returns

Promise<BlobDeleteIfExistsResponse>

Inherited From BlobClient.deleteIfExists

deleteImmutabilityPolicy(BlobDeleteImmutabilityPolicyOptions)

Delete the immutablility policy on the blob.

function deleteImmutabilityPolicy(options?: BlobDeleteImmutabilityPolicyOptions): Promise<BlobDeleteImmutabilityPolicyResponse>

Parameters

options
BlobDeleteImmutabilityPolicyOptions

Optional options to delete immutability policy on the blob.

Returns

Promise<BlobDeleteImmutabilityPolicyResponse>

Inherited From BlobClient.deleteImmutabilityPolicy

download(number, number, BlobDownloadOptions)

Reads or downloads a blob from the system, including its metadata and properties. You can also call Get Blob to read a snapshot.

  • In Node.js, data returns in a Readable stream readableStreamBody
  • In browsers, data returns in a promise blobBody

See https://docs.microsoft.com/en-us/rest/api/storageservices/get-blob

function download(offset?: number, count?: number, options?: BlobDownloadOptions): Promise<BlobDownloadResponseParsed>

Parameters

offset

number

From which position of the blob to download, greater than or equal to 0

count

number

How much data to be downloaded, greater than 0. Will download to the end when undefined

options
BlobDownloadOptions

Optional options to Blob Download operation.

Example usage (Node.js):

// Download and convert a blob to a string
const downloadBlockBlobResponse = await blobClient.download();
const downloaded = await streamToBuffer(downloadBlockBlobResponse.readableStreamBody);
console.log("Downloaded blob content:", downloaded.toString());

async function streamToBuffer(readableStream) {
return new Promise((resolve, reject) => {
const chunks = [];
readableStream.on("data", (data) => {
chunks.push(data instanceof Buffer ? data : Buffer.from(data));
});
readableStream.on("end", () => {
resolve(Buffer.concat(chunks));
});
readableStream.on("error", reject);
});
}

Example usage (browser):

// Download and convert a blob to a string
const downloadBlockBlobResponse = await blobClient.download();
const downloaded = await blobToString(await downloadBlockBlobResponse.blobBody);
console.log(
  "Downloaded blob content",
  downloaded
);

async function blobToString(blob: Blob): Promise<string> {
  const fileReader = new FileReader();
  return new Promise<string>((resolve, reject) => {
    fileReader.onloadend = (ev: any) => {
      resolve(ev.target!.result);
    };
    fileReader.onerror = reject;
    fileReader.readAsText(blob);
  });
}

Returns

Promise<BlobDownloadResponseParsed>

Inherited From BlobClient.download

downloadToBuffer(Buffer, number, number, BlobDownloadToBufferOptions)

ONLY AVAILABLE IN NODE.JS RUNTIME.

Downloads an Azure Blob in parallel to a buffer. Offset and count are optional, downloads the entire blob if they are not provided.

Warning: Buffers can only support files up to about one gigabyte on 32-bit systems or about two gigabytes on 64-bit systems due to limitations of Node.js/V8. For blobs larger than this size, consider downloadToFile.

function downloadToBuffer(buffer: Buffer, offset?: number, count?: number, options?: BlobDownloadToBufferOptions): Promise<Buffer>

Parameters

buffer

Buffer

Buffer to be fill, must have length larger than count

offset

number

From which position of the block blob to download(in bytes)

count

number

How much data(in bytes) to be downloaded. Will download to the end when passing undefined

options
BlobDownloadToBufferOptions

BlobDownloadToBufferOptions

Returns

Promise<Buffer>

Inherited From BlobClient.downloadToBuffer

downloadToBuffer(number, number, BlobDownloadToBufferOptions)

ONLY AVAILABLE IN NODE.JS RUNTIME.

Downloads an Azure Blob in parallel to a buffer. Offset and count are optional, downloads the entire blob if they are not provided.

Warning: Buffers can only support files up to about one gigabyte on 32-bit systems or about two gigabytes on 64-bit systems due to limitations of Node.js/V8. For blobs larger than this size, consider downloadToFile.

function downloadToBuffer(offset?: number, count?: number, options?: BlobDownloadToBufferOptions): Promise<Buffer>

Parameters

offset

number

From which position of the block blob to download(in bytes)

count

number

How much data(in bytes) to be downloaded. Will download to the end when passing undefined

options
BlobDownloadToBufferOptions

BlobDownloadToBufferOptions

Returns

Promise<Buffer>

Inherited From BlobClient.downloadToBuffer

downloadToFile(string, number, number, BlobDownloadOptions)

ONLY AVAILABLE IN NODE.JS RUNTIME.

Downloads an Azure Blob to a local file. Fails if the the given file path already exits. Offset and count are optional, pass 0 and undefined respectively to download the entire blob.

function downloadToFile(filePath: string, offset?: number, count?: number, options?: BlobDownloadOptions): Promise<BlobDownloadResponseParsed>

Parameters

filePath

string

offset

number

From which position of the block blob to download.

count

number

How much data to be downloaded. Will download to the end when passing undefined.

options
BlobDownloadOptions

Options to Blob download options.

Returns

Promise<BlobDownloadResponseParsed>

The response data for blob download operation, but with readableStreamBody set to undefined since its content is already read and written into a local file at the specified path.

Inherited From BlobClient.downloadToFile

exists(BlobExistsOptions)

Returns true if the Azure blob resource represented by this client exists; false otherwise.

NOTE: use this function with care since an existing blob might be deleted by other clients or applications. Vice versa new blobs might be added by other clients or applications after this function completes.

function exists(options?: BlobExistsOptions): Promise<boolean>

Parameters

options
BlobExistsOptions

options to Exists operation.

Returns

Promise<boolean>

Inherited From BlobClient.exists

generateSasUrl(BlobGenerateSasUrlOptions)

Only available for BlobClient constructed with a shared key credential.

Generates a Blob Service Shared Access Signature (SAS) URI based on the client properties and parameters passed in. The SAS is signed by the shared key credential of the client.

See https://docs.microsoft.com/en-us/rest/api/storageservices/constructing-a-service-sas

function generateSasUrl(options: BlobGenerateSasUrlOptions): Promise<string>

Parameters

options
BlobGenerateSasUrlOptions

Optional parameters.

Returns

Promise<string>

The SAS URI consisting of the URI to the resource represented by this client, followed by the generated SAS token.

Inherited From BlobClient.generateSasUrl

getAppendBlobClient()

Creates a AppendBlobClient object.

function getAppendBlobClient(): AppendBlobClient

Returns

AppendBlobClient

Inherited From BlobClient.getAppendBlobClient

getBlobLeaseClient(string)

Get a BlobLeaseClient that manages leases on the blob.

function getBlobLeaseClient(proposeLeaseId?: string): BlobLeaseClient

Parameters

proposeLeaseId

string

Initial proposed lease Id.

Returns

BlobLeaseClient

A new BlobLeaseClient object for managing leases on the blob.

Inherited From BlobClient.getBlobLeaseClient

getBlockBlobClient()

Creates a BlockBlobClient object.

function getBlockBlobClient(): BlockBlobClient

Returns

BlockBlobClient

Inherited From BlobClient.getBlockBlobClient

getPageBlobClient()

Creates a PageBlobClient object.

function getPageBlobClient(): PageBlobClient

Returns

PageBlobClient

Inherited From BlobClient.getPageBlobClient

getProperties(BlobGetPropertiesOptions)

Returns all user-defined metadata, standard HTTP properties, and system properties for the blob. It does not return the content of the blob.

See https://docs.microsoft.com/en-us/rest/api/storageservices/get-blob-properties

WARNING: The metadata object returned in the response will have its keys in lowercase, even if they originally contained uppercase characters. This differs from the metadata keys returned by the methods of ContainerClient that list blobs using the includeMetadata option, which will retain their original casing.

function getProperties(options?: BlobGetPropertiesOptions): Promise<BlobGetPropertiesResponse>

Parameters

options
BlobGetPropertiesOptions

Optional options to Get Properties operation.

Returns

Promise<BlobGetPropertiesResponse>

Inherited From BlobClient.getProperties

getTags(BlobGetTagsOptions)

Gets the tags associated with the underlying blob.

function getTags(options?: BlobGetTagsOptions): Promise<BlobGetTagsResponse>

Parameters

options
BlobGetTagsOptions

Returns

Promise<BlobGetTagsResponse>

Inherited From BlobClient.getTags

setAccessTier(string, BlobSetTierOptions)

Sets the tier on a blob. The operation is allowed on a page blob in a premium storage account and on a block blob in a blob storage account (locally redundant storage only). A premium page blob's tier determines the allowed size, IOPS, and bandwidth of the blob. A block blob's tier determines Hot/Cool/Archive storage type. This operation does not update the blob's ETag.

See https://docs.microsoft.com/en-us/rest/api/storageservices/set-blob-tier

function setAccessTier(tier: string, options?: BlobSetTierOptions): Promise<BlobSetTierResponse>

Parameters

tier

string

The tier to be set on the blob. Valid values are Hot, Cool, or Archive.

options
BlobSetTierOptions

Optional options to the Blob Set Tier operation.

Returns

Promise<BlobSetTierResponse>

Inherited From BlobClient.setAccessTier

setHTTPHeaders(BlobHTTPHeaders, BlobSetHTTPHeadersOptions)

Sets system properties on the blob.

If no value provided, or no value provided for the specified blob HTTP headers, these blob HTTP headers without a value will be cleared.

See https://docs.microsoft.com/en-us/rest/api/storageservices/set-blob-properties

function setHTTPHeaders(blobHTTPHeaders?: BlobHTTPHeaders, options?: BlobSetHTTPHeadersOptions): Promise<BlobSetHTTPHeadersResponse>

Parameters

blobHTTPHeaders
BlobHTTPHeaders

If no value provided, or no value provided for the specified blob HTTP headers, these blob HTTP headers without a value will be cleared. A common header to set is blobContentType enabling the browser to provide functionality based on file type.

options
BlobSetHTTPHeadersOptions

Optional options to Blob Set HTTP Headers operation.

Returns

Promise<BlobSetHTTPHeadersResponse>

Inherited From BlobClient.setHTTPHeaders

setImmutabilityPolicy(BlobImmutabilityPolicy, BlobSetImmutabilityPolicyOptions)

Set immutablility policy on the blob.

function setImmutabilityPolicy(immutabilityPolicy: BlobImmutabilityPolicy, options?: BlobSetImmutabilityPolicyOptions): Promise<BlobSetImmutabilityPolicyResponse>

Parameters

immutabilityPolicy
BlobImmutabilityPolicy
options
BlobSetImmutabilityPolicyOptions

Optional options to set immutability policy on the blob.

Returns

Promise<BlobSetImmutabilityPolicyResponse>

Inherited From BlobClient.setImmutabilityPolicy

setLegalHold(boolean, BlobSetLegalHoldOptions)

Set legal hold on the blob.

function setLegalHold(legalHoldEnabled: boolean, options?: BlobSetLegalHoldOptions): Promise<BlobSetLegalHoldResponse>

Parameters

legalHoldEnabled

boolean

options
BlobSetLegalHoldOptions

Optional options to set legal hold on the blob.

Returns

Promise<BlobSetLegalHoldResponse>

Inherited From BlobClient.setLegalHold

setMetadata(Metadata, BlobSetMetadataOptions)

Sets user-defined metadata for the specified blob as one or more name-value pairs.

If no option provided, or no metadata defined in the parameter, the blob metadata will be removed.

See https://docs.microsoft.com/en-us/rest/api/storageservices/set-blob-metadata

function setMetadata(metadata?: Metadata, options?: BlobSetMetadataOptions): Promise<BlobSetMetadataResponse>

Parameters

metadata
Metadata

Replace existing metadata with this value. If no value provided the existing metadata will be removed.

options
BlobSetMetadataOptions

Optional options to Set Metadata operation.

Returns

Promise<BlobSetMetadataResponse>

Inherited From BlobClient.setMetadata

setTags(Tags, BlobSetTagsOptions)

Sets tags on the underlying blob. A blob can have up to 10 tags. Tag keys must be between 1 and 128 characters. Tag values must be between 0 and 256 characters. Valid tag key and value characters include lower and upper case letters, digits (0-9), space (' '), plus ('+'), minus ('-'), period ('.'), foward slash ('/'), colon (':'), equals ('='), and underscore ('_').

function setTags(tags: Tags, options?: BlobSetTagsOptions): Promise<BlobSetTagsResponse>

Parameters

tags
Tags
options
BlobSetTagsOptions

Returns

Promise<BlobSetTagsResponse>

Inherited From BlobClient.setTags

syncCopyFromURL(string, BlobSyncCopyFromURLOptions)

The synchronous Copy From URL operation copies a blob or an internet resource to a new blob. It will not return a response until the copy is complete.

See https://docs.microsoft.com/en-us/rest/api/storageservices/copy-blob-from-url

function syncCopyFromURL(copySource: string, options?: BlobSyncCopyFromURLOptions): Promise<BlobCopyFromURLResponse>

Parameters

copySource

string

The source URL to copy from, Shared Access Signature(SAS) maybe needed for authentication

options
BlobSyncCopyFromURLOptions

Returns

Promise<BlobCopyFromURLResponse>

Inherited From BlobClient.syncCopyFromURL

undelete(BlobUndeleteOptions)

Restores the contents and metadata of soft deleted blob and any associated soft deleted snapshots. Undelete Blob is supported only on version 2017-07-29 or later.

See https://docs.microsoft.com/en-us/rest/api/storageservices/undelete-blob

function undelete(options?: BlobUndeleteOptions): Promise<BlobUndeleteResponse>

Parameters

options
BlobUndeleteOptions

Optional options to Blob Undelete operation.

Returns

Promise<BlobUndeleteResponse>

Inherited From BlobClient.undelete

withVersion(string)

Creates a new BlobClient object pointing to a version of this blob. Provide "" will remove the versionId and return a Client to the base blob.

function withVersion(versionId: string): BlobClient

Parameters

versionId

string

The versionId.

Returns

BlobClient

A new BlobClient object pointing to the version of this blob.

Inherited From BlobClient.withVersion