azure/multiapi/storage/v2017_11_09/blob/pageblobservice.py [10:381]: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - _int_to_str, _to_str, _datetime_to_utc_string, _get_content_md5, ) from ..common._constants import ( SERVICE_HOST_BASE, DEFAULT_PROTOCOL, ) from ..common._error import ( _validate_not_none, _validate_type_bytes, _validate_encryption_required, _validate_encryption_unsupported, _ERROR_VALUE_NEGATIVE, ) from ..common._http import HTTPRequest from ..common._serialization import ( _get_data_bytes_only, _add_metadata_headers, ) from ._deserialization import ( _convert_xml_to_page_ranges, _parse_page_properties, _parse_base_properties, ) from ._encryption import _generate_blob_encryption_data from ._error import ( _ERROR_PAGE_BLOB_SIZE_ALIGNMENT, ) from ._serialization import ( _get_path, _validate_and_format_range_headers, ) from ._upload_chunking import ( _PageBlobChunkUploader, _upload_blob_chunks, ) from .baseblobservice import BaseBlobService from .models import ( _BlobTypes, ResourceProperties) if sys.version_info >= (3,): from io import BytesIO else: from cStringIO import StringIO as BytesIO # Keep this value sync with _ERROR_PAGE_BLOB_SIZE_ALIGNMENT _PAGE_ALIGNMENT = 512 class PageBlobService(BaseBlobService): ''' Page blobs are a collection of 512-byte pages optimized for random read and write operations. To create a page blob, you initialize the page blob and specify the maximum size the page blob will grow. To add or update the contents of a page blob, you write a page or pages by specifying an offset and a range that align to 512-byte page boundaries. A write to a page blob can overwrite just one page, some pages, or up to 4 MB of the page blob. Writes to page blobs happen in-place and are immediately committed to the blob. The maximum size for a page blob is 8 TB. :ivar int MAX_PAGE_SIZE: The size of the pages put by create_blob_from_* methods. Smaller pages may be put if there is less data provided. The maximum page size the service supports is 4MB. When using the create_blob_from_* methods, empty pages are skipped. ''' MAX_PAGE_SIZE = 4 * 1024 * 1024 def __init__(self, account_name=None, account_key=None, sas_token=None, is_emulated=False, protocol=DEFAULT_PROTOCOL, endpoint_suffix=SERVICE_HOST_BASE, custom_domain=None, request_session=None, connection_string=None, socket_timeout=None, token_credential=None): ''' :param str account_name: The storage account name. This is used to authenticate requests signed with an account key and to construct the storage endpoint. It is required unless a connection string is given, or if a custom domain is used with anonymous authentication. :param str account_key: The storage account key. This is used for shared key authentication. If neither account key or sas token is specified, anonymous access will be used. :param str sas_token: A shared access signature token to use to authenticate requests instead of the account key. If account key and sas token are both specified, account key will be used to sign. If neither are specified, anonymous access will be used. :param bool is_emulated: Whether to use the emulator. Defaults to False. If specified, will override all other parameters besides connection string and request session. :param str protocol: The protocol to use for requests. Defaults to https. :param str endpoint_suffix: The host base component of the url, minus the account name. Defaults to Azure (core.windows.net). Override this to use the China cloud (core.chinacloudapi.cn). :param str custom_domain: The custom domain to use. This can be set in the Azure Portal. For example, 'www.mydomain.com'. :param requests.Session request_session: The session object to use for http requests. :param str connection_string: If specified, this will override all other parameters besides request session. See http://azure.microsoft.com/en-us/documentation/articles/storage-configure-connection-string/ for the connection string format. :param int socket_timeout: If specified, this will override the default socket timeout. The timeout specified is in seconds. See DEFAULT_SOCKET_TIMEOUT in _constants.py for the default value. :param token_credential: A token credential used to authenticate HTTPS requests. The token value should be updated before its expiration. :type `~azure.storage.common.TokenCredential` ''' self.blob_type = _BlobTypes.PageBlob super(PageBlobService, self).__init__( account_name, account_key, sas_token, is_emulated, protocol, endpoint_suffix, custom_domain, request_session, connection_string, socket_timeout, token_credential) def create_blob( self, container_name, blob_name, content_length, content_settings=None, sequence_number=None, metadata=None, lease_id=None, if_modified_since=None, if_unmodified_since=None, if_match=None, if_none_match=None, timeout=None, premium_page_blob_tier=None): ''' Creates a new Page Blob. See create_blob_from_* for high level functions that handle the creation and upload of large blobs with automatic chunking and progress notifications. :param str container_name: Name of existing container. :param str blob_name: Name of blob to create or update. :param int content_length: Required. This header specifies the maximum size for the page blob, up to 1 TB. The page blob size must be aligned to a 512-byte boundary. :param ~azure.storage.blob.models.ContentSettings content_settings: ContentSettings object used to set properties on the blob. :param int sequence_number: The sequence number is a user-controlled value that you can use to track requests. The value of the sequence number must be between 0 and 2^63 - 1.The default value is 0. :param metadata: Name-value pairs associated with the blob as metadata. :type metadata: dict(str, str) :param str lease_id: Required if the blob has an active lease. :param datetime if_modified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this header to perform the operation only if the resource has been modified since the specified time. :param datetime if_unmodified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this header to perform the operation only if the resource has not been modified since the specified date/time. :param str if_match: An ETag value, or the wildcard character (*). Specify this header to perform the operation only if the resource's ETag matches the value specified. :param str if_none_match: An ETag value, or the wildcard character (*). Specify this header to perform the operation only if the resource's ETag does not match the value specified. Specify the wildcard character (*) to perform the operation only if the resource does not exist, and fail the operation if it does exist. :param int timeout: The timeout parameter is expressed in seconds. :param PremiumPageBlobTier premium_page_blob_tier: A page blob tier value to set the blob to. The tier correlates to the size of the blob and number of allowed IOPS. This is only applicable to page blobs on premium storage accounts. :return: ETag and last modified properties for the new Page Blob :rtype: :class:`~azure.storage.blob.models.ResourceProperties` ''' _validate_encryption_unsupported(self.require_encryption, self.key_encryption_key) return self._create_blob( container_name, blob_name, content_length, content_settings=content_settings, sequence_number=sequence_number, metadata=metadata, lease_id=lease_id, premium_page_blob_tier=premium_page_blob_tier, if_modified_since=if_modified_since, if_unmodified_since=if_unmodified_since, if_match=if_match, if_none_match=if_none_match, timeout=timeout ) def incremental_copy_blob(self, container_name, blob_name, copy_source, metadata=None, destination_if_modified_since=None, destination_if_unmodified_since=None, destination_if_match=None, destination_if_none_match=None, destination_lease_id=None, source_lease_id=None, timeout=None): ''' Copies an incremental copy of a blob asynchronously. This operation returns a copy operation properties object, including a copy ID you can use to check or abort the copy operation. The Blob service copies blobs on a best-effort basis. The source blob for an incremental copy operation must be a page blob. Call get_blob_properties on the destination blob to check the status of the copy operation. The final blob will be committed when the copy completes. :param str container_name: Name of the destination container. The container must exist. :param str blob_name: Name of the destination blob. If the destination blob exists, it will be overwritten. Otherwise, it will be created. :param str copy_source: A URL of up to 2 KB in length that specifies an Azure page blob. The value should be URL-encoded as it would appear in a request URI. The copy source must be a snapshot and include a valid SAS token or be public. Example: https://myaccount.blob.core.windows.net/mycontainer/myblob?snapshot=&sastoken :param metadata: Name-value pairs associated with the blob as metadata. If no name-value pairs are specified, the operation will copy the metadata from the source blob or file to the destination blob. If one or more name-value pairs are specified, the destination blob is created with the specified metadata, and metadata is not copied from the source blob or file. :type metadata: dict(str, str). :param datetime destination_if_modified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this conditional header to copy the blob only if the destination blob has been modified since the specified date/time. If the destination blob has not been modified, the Blob service returns status code 412 (Precondition Failed). :param datetime destination_if_unmodified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this conditional header to copy the blob only if the destination blob has not been modified since the specified ate/time. If the destination blob has been modified, the Blob service returns status code 412 (Precondition Failed). :param ETag destination_if_match: An ETag value, or the wildcard character (*). Specify an ETag value for this conditional header to copy the blob only if the specified ETag value matches the ETag value for an existing destination blob. If the ETag for the destination blob does not match the ETag specified for If-Match, the Blob service returns status code 412 (Precondition Failed). :param ETag destination_if_none_match: An ETag value, or the wildcard character (*). Specify an ETag value for this conditional header to copy the blob only if the specified ETag value does not match the ETag value for the destination blob. Specify the wildcard character (*) to perform the operation only if the destination blob does not exist. If the specified condition isn't met, the Blob service returns status code 412 (Precondition Failed). :param str destination_lease_id: The lease ID specified for this header must match the lease ID of the destination blob. If the request does not include the lease ID or it is not valid, the operation fails with status code 412 (Precondition Failed). :param str source_lease_id: Specify this to perform the Copy Blob operation only if the lease ID given matches the active lease ID of the source blob. :param int timeout: The timeout parameter is expressed in seconds. :return: Copy operation properties such as status, source, and ID. :rtype: :class:`~azure.storage.blob.models.CopyProperties` ''' return self._copy_blob(container_name, blob_name, copy_source, metadata, source_if_modified_since=None, source_if_unmodified_since=None, source_if_match=None, source_if_none_match=None, destination_if_modified_since=destination_if_modified_since, destination_if_unmodified_since=destination_if_unmodified_since, destination_if_match=destination_if_match, destination_if_none_match=destination_if_none_match, destination_lease_id=destination_lease_id, source_lease_id=source_lease_id, timeout=timeout, incremental_copy=True) def update_page( self, container_name, blob_name, page, start_range, end_range, validate_content=False, lease_id=None, if_sequence_number_lte=None, if_sequence_number_lt=None, if_sequence_number_eq=None, if_modified_since=None, if_unmodified_since=None, if_match=None, if_none_match=None, timeout=None): ''' Updates a range of pages. :param str container_name: Name of existing container. :param str blob_name: Name of existing blob. :param bytes page: Content of the page. :param int start_range: Start of byte range to use for writing to a section of the blob. Pages must be aligned with 512-byte boundaries, the start offset must be a modulus of 512 and the end offset must be a modulus of 512-1. Examples of valid byte ranges are 0-511, 512-1023, etc. :param int end_range: End of byte range to use for writing to a section of the blob. Pages must be aligned with 512-byte boundaries, the start offset must be a modulus of 512 and the end offset must be a modulus of 512-1. Examples of valid byte ranges are 0-511, 512-1023, etc. :param bool validate_content: If true, calculates an MD5 hash of the page content. The storage service checks the hash of the content that has arrived with the hash that was sent. This is primarily valuable for detecting bitflips on the wire if using http instead of https as https (the default) will already validate. Note that this MD5 hash is not stored with the blob. :param str lease_id: Required if the blob has an active lease. :param int if_sequence_number_lte: If the blob's sequence number is less than or equal to the specified value, the request proceeds; otherwise it fails. :param int if_sequence_number_lt: If the blob's sequence number is less than the specified value, the request proceeds; otherwise it fails. :param int if_sequence_number_eq: If the blob's sequence number is equal to the specified value, the request proceeds; otherwise it fails. :param datetime if_modified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this header to perform the operation only if the resource has been modified since the specified time. :param datetime if_unmodified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this header to perform the operation only if the resource has not been modified since the specified date/time. :param str if_match: An ETag value, or the wildcard character (*). Specify an ETag value for this conditional header to write the page only if the blob's ETag value matches the value specified. If the values do not match, the Blob service fails. :param str if_none_match: An ETag value, or the wildcard character (*). Specify an ETag value for this conditional header to write the page only if the blob's ETag value does not match the value specified. If the values are identical, the Blob service fails. :param int timeout: The timeout parameter is expressed in seconds. :return: ETag and last modified properties for the updated Page Blob :rtype: :class:`~azure.storage.blob.models.ResourceProperties` ''' _validate_encryption_unsupported(self.require_encryption, self.key_encryption_key) return self._update_page( container_name, blob_name, page, start_range, end_range, validate_content=validate_content, lease_id=lease_id, if_sequence_number_lte=if_sequence_number_lte, if_sequence_number_lt=if_sequence_number_lt, if_sequence_number_eq=if_sequence_number_eq, if_modified_since=if_modified_since, if_unmodified_since=if_unmodified_since, if_match=if_match, if_none_match=if_none_match, timeout=timeout ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - azure/multiapi/storage/v2018_11_09/blob/pageblobservice.py [10:381]: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - _int_to_str, _to_str, _datetime_to_utc_string, _get_content_md5, ) from ..common._constants import ( SERVICE_HOST_BASE, DEFAULT_PROTOCOL, ) from ..common._error import ( _validate_not_none, _validate_type_bytes, _validate_encryption_required, _validate_encryption_unsupported, _ERROR_VALUE_NEGATIVE, ) from ..common._http import HTTPRequest from ..common._serialization import ( _get_data_bytes_only, _add_metadata_headers, ) from ._deserialization import ( _convert_xml_to_page_ranges, _parse_page_properties, _parse_base_properties, ) from ._encryption import _generate_blob_encryption_data from ._error import ( _ERROR_PAGE_BLOB_SIZE_ALIGNMENT, ) from ._serialization import ( _get_path, _validate_and_format_range_headers, ) from ._upload_chunking import ( _PageBlobChunkUploader, _upload_blob_chunks, ) from .baseblobservice import BaseBlobService from .models import ( _BlobTypes, ResourceProperties) if sys.version_info >= (3,): from io import BytesIO else: from cStringIO import StringIO as BytesIO # Keep this value sync with _ERROR_PAGE_BLOB_SIZE_ALIGNMENT _PAGE_ALIGNMENT = 512 class PageBlobService(BaseBlobService): ''' Page blobs are a collection of 512-byte pages optimized for random read and write operations. To create a page blob, you initialize the page blob and specify the maximum size the page blob will grow. To add or update the contents of a page blob, you write a page or pages by specifying an offset and a range that align to 512-byte page boundaries. A write to a page blob can overwrite just one page, some pages, or up to 4 MB of the page blob. Writes to page blobs happen in-place and are immediately committed to the blob. The maximum size for a page blob is 8 TB. :ivar int MAX_PAGE_SIZE: The size of the pages put by create_blob_from_* methods. Smaller pages may be put if there is less data provided. The maximum page size the service supports is 4MB. When using the create_blob_from_* methods, empty pages are skipped. ''' MAX_PAGE_SIZE = 4 * 1024 * 1024 def __init__(self, account_name=None, account_key=None, sas_token=None, is_emulated=False, protocol=DEFAULT_PROTOCOL, endpoint_suffix=SERVICE_HOST_BASE, custom_domain=None, request_session=None, connection_string=None, socket_timeout=None, token_credential=None): ''' :param str account_name: The storage account name. This is used to authenticate requests signed with an account key and to construct the storage endpoint. It is required unless a connection string is given, or if a custom domain is used with anonymous authentication. :param str account_key: The storage account key. This is used for shared key authentication. If neither account key or sas token is specified, anonymous access will be used. :param str sas_token: A shared access signature token to use to authenticate requests instead of the account key. If account key and sas token are both specified, account key will be used to sign. If neither are specified, anonymous access will be used. :param bool is_emulated: Whether to use the emulator. Defaults to False. If specified, will override all other parameters besides connection string and request session. :param str protocol: The protocol to use for requests. Defaults to https. :param str endpoint_suffix: The host base component of the url, minus the account name. Defaults to Azure (core.windows.net). Override this to use the China cloud (core.chinacloudapi.cn). :param str custom_domain: The custom domain to use. This can be set in the Azure Portal. For example, 'www.mydomain.com'. :param requests.Session request_session: The session object to use for http requests. :param str connection_string: If specified, this will override all other parameters besides request session. See http://azure.microsoft.com/en-us/documentation/articles/storage-configure-connection-string/ for the connection string format. :param int socket_timeout: If specified, this will override the default socket timeout. The timeout specified is in seconds. See DEFAULT_SOCKET_TIMEOUT in _constants.py for the default value. :param token_credential: A token credential used to authenticate HTTPS requests. The token value should be updated before its expiration. :type `~azure.storage.common.TokenCredential` ''' self.blob_type = _BlobTypes.PageBlob super(PageBlobService, self).__init__( account_name, account_key, sas_token, is_emulated, protocol, endpoint_suffix, custom_domain, request_session, connection_string, socket_timeout, token_credential) def create_blob( self, container_name, blob_name, content_length, content_settings=None, sequence_number=None, metadata=None, lease_id=None, if_modified_since=None, if_unmodified_since=None, if_match=None, if_none_match=None, timeout=None, premium_page_blob_tier=None): ''' Creates a new Page Blob. See create_blob_from_* for high level functions that handle the creation and upload of large blobs with automatic chunking and progress notifications. :param str container_name: Name of existing container. :param str blob_name: Name of blob to create or update. :param int content_length: Required. This header specifies the maximum size for the page blob, up to 1 TB. The page blob size must be aligned to a 512-byte boundary. :param ~azure.storage.blob.models.ContentSettings content_settings: ContentSettings object used to set properties on the blob. :param int sequence_number: The sequence number is a user-controlled value that you can use to track requests. The value of the sequence number must be between 0 and 2^63 - 1.The default value is 0. :param metadata: Name-value pairs associated with the blob as metadata. :type metadata: dict(str, str) :param str lease_id: Required if the blob has an active lease. :param datetime if_modified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this header to perform the operation only if the resource has been modified since the specified time. :param datetime if_unmodified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this header to perform the operation only if the resource has not been modified since the specified date/time. :param str if_match: An ETag value, or the wildcard character (*). Specify this header to perform the operation only if the resource's ETag matches the value specified. :param str if_none_match: An ETag value, or the wildcard character (*). Specify this header to perform the operation only if the resource's ETag does not match the value specified. Specify the wildcard character (*) to perform the operation only if the resource does not exist, and fail the operation if it does exist. :param int timeout: The timeout parameter is expressed in seconds. :param PremiumPageBlobTier premium_page_blob_tier: A page blob tier value to set the blob to. The tier correlates to the size of the blob and number of allowed IOPS. This is only applicable to page blobs on premium storage accounts. :return: ETag and last modified properties for the new Page Blob :rtype: :class:`~azure.storage.blob.models.ResourceProperties` ''' _validate_encryption_unsupported(self.require_encryption, self.key_encryption_key) return self._create_blob( container_name, blob_name, content_length, content_settings=content_settings, sequence_number=sequence_number, metadata=metadata, lease_id=lease_id, premium_page_blob_tier=premium_page_blob_tier, if_modified_since=if_modified_since, if_unmodified_since=if_unmodified_since, if_match=if_match, if_none_match=if_none_match, timeout=timeout ) def incremental_copy_blob(self, container_name, blob_name, copy_source, metadata=None, destination_if_modified_since=None, destination_if_unmodified_since=None, destination_if_match=None, destination_if_none_match=None, destination_lease_id=None, source_lease_id=None, timeout=None): ''' Copies an incremental copy of a blob asynchronously. This operation returns a copy operation properties object, including a copy ID you can use to check or abort the copy operation. The Blob service copies blobs on a best-effort basis. The source blob for an incremental copy operation must be a page blob. Call get_blob_properties on the destination blob to check the status of the copy operation. The final blob will be committed when the copy completes. :param str container_name: Name of the destination container. The container must exist. :param str blob_name: Name of the destination blob. If the destination blob exists, it will be overwritten. Otherwise, it will be created. :param str copy_source: A URL of up to 2 KB in length that specifies an Azure page blob. The value should be URL-encoded as it would appear in a request URI. The copy source must be a snapshot and include a valid SAS token or be public. Example: https://myaccount.blob.core.windows.net/mycontainer/myblob?snapshot=&sastoken :param metadata: Name-value pairs associated with the blob as metadata. If no name-value pairs are specified, the operation will copy the metadata from the source blob or file to the destination blob. If one or more name-value pairs are specified, the destination blob is created with the specified metadata, and metadata is not copied from the source blob or file. :type metadata: dict(str, str). :param datetime destination_if_modified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this conditional header to copy the blob only if the destination blob has been modified since the specified date/time. If the destination blob has not been modified, the Blob service returns status code 412 (Precondition Failed). :param datetime destination_if_unmodified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this conditional header to copy the blob only if the destination blob has not been modified since the specified ate/time. If the destination blob has been modified, the Blob service returns status code 412 (Precondition Failed). :param ETag destination_if_match: An ETag value, or the wildcard character (*). Specify an ETag value for this conditional header to copy the blob only if the specified ETag value matches the ETag value for an existing destination blob. If the ETag for the destination blob does not match the ETag specified for If-Match, the Blob service returns status code 412 (Precondition Failed). :param ETag destination_if_none_match: An ETag value, or the wildcard character (*). Specify an ETag value for this conditional header to copy the blob only if the specified ETag value does not match the ETag value for the destination blob. Specify the wildcard character (*) to perform the operation only if the destination blob does not exist. If the specified condition isn't met, the Blob service returns status code 412 (Precondition Failed). :param str destination_lease_id: The lease ID specified for this header must match the lease ID of the destination blob. If the request does not include the lease ID or it is not valid, the operation fails with status code 412 (Precondition Failed). :param str source_lease_id: Specify this to perform the Copy Blob operation only if the lease ID given matches the active lease ID of the source blob. :param int timeout: The timeout parameter is expressed in seconds. :return: Copy operation properties such as status, source, and ID. :rtype: :class:`~azure.storage.blob.models.CopyProperties` ''' return self._copy_blob(container_name, blob_name, copy_source, metadata, source_if_modified_since=None, source_if_unmodified_since=None, source_if_match=None, source_if_none_match=None, destination_if_modified_since=destination_if_modified_since, destination_if_unmodified_since=destination_if_unmodified_since, destination_if_match=destination_if_match, destination_if_none_match=destination_if_none_match, destination_lease_id=destination_lease_id, source_lease_id=source_lease_id, timeout=timeout, incremental_copy=True) def update_page( self, container_name, blob_name, page, start_range, end_range, validate_content=False, lease_id=None, if_sequence_number_lte=None, if_sequence_number_lt=None, if_sequence_number_eq=None, if_modified_since=None, if_unmodified_since=None, if_match=None, if_none_match=None, timeout=None): ''' Updates a range of pages. :param str container_name: Name of existing container. :param str blob_name: Name of existing blob. :param bytes page: Content of the page. :param int start_range: Start of byte range to use for writing to a section of the blob. Pages must be aligned with 512-byte boundaries, the start offset must be a modulus of 512 and the end offset must be a modulus of 512-1. Examples of valid byte ranges are 0-511, 512-1023, etc. :param int end_range: End of byte range to use for writing to a section of the blob. Pages must be aligned with 512-byte boundaries, the start offset must be a modulus of 512 and the end offset must be a modulus of 512-1. Examples of valid byte ranges are 0-511, 512-1023, etc. :param bool validate_content: If true, calculates an MD5 hash of the page content. The storage service checks the hash of the content that has arrived with the hash that was sent. This is primarily valuable for detecting bitflips on the wire if using http instead of https as https (the default) will already validate. Note that this MD5 hash is not stored with the blob. :param str lease_id: Required if the blob has an active lease. :param int if_sequence_number_lte: If the blob's sequence number is less than or equal to the specified value, the request proceeds; otherwise it fails. :param int if_sequence_number_lt: If the blob's sequence number is less than the specified value, the request proceeds; otherwise it fails. :param int if_sequence_number_eq: If the blob's sequence number is equal to the specified value, the request proceeds; otherwise it fails. :param datetime if_modified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this header to perform the operation only if the resource has been modified since the specified time. :param datetime if_unmodified_since: A DateTime value. Azure expects the date value passed in to be UTC. If timezone is included, any non-UTC datetimes will be converted to UTC. If a date is passed in without timezone info, it is assumed to be UTC. Specify this header to perform the operation only if the resource has not been modified since the specified date/time. :param str if_match: An ETag value, or the wildcard character (*). Specify an ETag value for this conditional header to write the page only if the blob's ETag value matches the value specified. If the values do not match, the Blob service fails. :param str if_none_match: An ETag value, or the wildcard character (*). Specify an ETag value for this conditional header to write the page only if the blob's ETag value does not match the value specified. If the values are identical, the Blob service fails. :param int timeout: The timeout parameter is expressed in seconds. :return: ETag and last modified properties for the updated Page Blob :rtype: :class:`~azure.storage.blob.models.ResourceProperties` ''' _validate_encryption_unsupported(self.require_encryption, self.key_encryption_key) return self._update_page( container_name, blob_name, page, start_range, end_range, validate_content=validate_content, lease_id=lease_id, if_sequence_number_lte=if_sequence_number_lte, if_sequence_number_lt=if_sequence_number_lt, if_sequence_number_eq=if_sequence_number_eq, if_modified_since=if_modified_since, if_unmodified_since=if_unmodified_since, if_match=if_match, if_none_match=if_none_match, timeout=timeout ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -