BlobLeaseClient Class

Creates a new BlobLeaseClient.

This client provides lease operations on a BlobClient or ContainerClient.

Inheritance
builtins.object
BlobLeaseClient

Constructor

BlobLeaseClient(client, lease_id=None)

Parameters

client
BlobClient or ContainerClient
Required

The client of the blob or container to lease.

lease_id
str
Required

A string representing the lease ID of an existing lease. This value does not need to be specified in order to acquire a new lease, or break one.

Variables

id
str

The ID of the lease currently being maintained. This will be None if no lease has yet been acquired.

etag
str

The ETag of the lease currently being maintained. This will be None if no lease has yet been acquired or modified.

last_modified
datetime

The last modified timestamp of the lease currently being maintained. This will be None if no lease has yet been acquired or modified.

Methods

acquire

Requests a new lease.

If the container does not have an active lease, the Blob service creates a lease on the container and returns a new lease ID.

break_lease

Break the lease, if the container or blob has an active lease.

Once a lease is broken, it cannot be renewed. Any authorized request can break the lease; the request is not required to specify a matching lease ID. When a lease is broken, the lease break period is allowed to elapse, during which time no lease operation except break and release can be performed on the container or blob. When a lease is successfully broken, the response indicates the interval in seconds until a new lease can be acquired.

change

Change the lease ID of an active lease.

release

Release the lease.

The lease may be released if the client lease id specified matches that associated with the container or blob. Releasing the lease allows another client to immediately acquire the lease for the container or blob as soon as the release is complete.

renew

Renews the lease.

The lease can be renewed if the lease ID specified in the lease client matches that associated with the container or blob. Note that the lease may be renewed even if it has expired as long as the container or blob has not been leased again since the expiration of that lease. When you renew a lease, the lease duration clock resets.

acquire

Requests a new lease.

If the container does not have an active lease, the Blob service creates a lease on the container and returns a new lease ID.

acquire(lease_duration=-1, **kwargs)

Parameters

lease_duration
int
Required

Specifies the duration of the lease, in seconds, or negative one (-1) for a lease that never expires. A non-infinite lease can be between 15 and 60 seconds. A lease duration cannot be changed using renew or change. Default is -1 (infinite lease).

if_modified_since
datetime

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.

if_unmodified_since
datetime

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.

etag
str

An ETag value, or the wildcard character (*). Used to check if the resource has changed, and act according to the condition specified by the match_condition parameter.

match_condition
MatchConditions

The match condition to use upon the etag.

if_tags_match_condition
str

Specify a SQL where clause on blob tags to operate only on blob with a matching value. eg. "\"tagname\"='my tag'"

New in version 12.4.0.

timeout
int

The timeout parameter is expressed in seconds.

Return type

break_lease

Break the lease, if the container or blob has an active lease.

Once a lease is broken, it cannot be renewed. Any authorized request can break the lease; the request is not required to specify a matching lease ID. When a lease is broken, the lease break period is allowed to elapse, during which time no lease operation except break and release can be performed on the container or blob. When a lease is successfully broken, the response indicates the interval in seconds until a new lease can be acquired.

break_lease(lease_break_period=None, **kwargs)

Parameters

lease_break_period
int
Required

This is the proposed duration of seconds that the lease should continue before it is broken, between 0 and 60 seconds. This break period is only used if it is shorter than the time remaining on the lease. If longer, the time remaining on the lease is used. A new lease will not be available before the break period has expired, but the lease may be held for longer than the break period. If this header does not appear with a break operation, a fixed-duration lease breaks after the remaining lease period elapses, and an infinite lease breaks immediately.

if_modified_since
datetime

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.

if_unmodified_since
datetime

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.

if_tags_match_condition
str

Specify a SQL where clause on blob tags to operate only on blob with a matching value. eg. "\"tagname\"='my tag'"

New in version 12.4.0.

timeout
int

The timeout parameter is expressed in seconds.

Returns

Approximate time remaining in the lease period, in seconds.

Return type

int

change

Change the lease ID of an active lease.

change(proposed_lease_id, **kwargs)

Parameters

proposed_lease_id
str
Required

Proposed lease ID, in a GUID string format. The Blob service returns 400 (Invalid request) if the proposed lease ID is not in the correct format.

if_modified_since
datetime

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.

if_unmodified_since
datetime

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.

etag
str

An ETag value, or the wildcard character (*). Used to check if the resource has changed, and act according to the condition specified by the match_condition parameter.

match_condition
MatchConditions

The match condition to use upon the etag.

if_tags_match_condition
str

Specify a SQL where clause on blob tags to operate only on blob with a matching value. eg. "\"tagname\"='my tag'"

New in version 12.4.0.

timeout
int

The timeout parameter is expressed in seconds.

Returns

None

release

Release the lease.

The lease may be released if the client lease id specified matches that associated with the container or blob. Releasing the lease allows another client to immediately acquire the lease for the container or blob as soon as the release is complete.

release(**kwargs)

Parameters

if_modified_since
datetime

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.

if_unmodified_since
datetime

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.

etag
str

An ETag value, or the wildcard character (*). Used to check if the resource has changed, and act according to the condition specified by the match_condition parameter.

match_condition
MatchConditions

The match condition to use upon the etag.

if_tags_match_condition
str

Specify a SQL where clause on blob tags to operate only on blob with a matching value. eg. "\"tagname\"='my tag'"

New in version 12.4.0.

timeout
int

The timeout parameter is expressed in seconds.

Returns

None

renew

Renews the lease.

The lease can be renewed if the lease ID specified in the lease client matches that associated with the container or blob. Note that the lease may be renewed even if it has expired as long as the container or blob has not been leased again since the expiration of that lease. When you renew a lease, the lease duration clock resets.

renew(**kwargs)

Parameters

if_modified_since
datetime

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.

if_unmodified_since
datetime

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.

etag
str

An ETag value, or the wildcard character (*). Used to check if the resource has changed, and act according to the condition specified by the match_condition parameter.

match_condition
MatchConditions

The match condition to use upon the etag.

if_tags_match_condition
str

Specify a SQL where clause on blob tags to operate only on blob with a matching value. eg. "\"tagname\"='my tag'"

New in version 12.4.0.

timeout
int

The timeout parameter is expressed in seconds.

Returns

None