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ExponentialRetry Class

  • Reference

Exponential retry.

Constructs an Exponential retry object. The initial_backoff is used for the first retry. Subsequent retries are retried after initial_backoff + increment_power^retry_count seconds.

Inheritance
azure.storage.queue._shared.policies.StorageRetryPolicy
ExponentialRetry

Constructor

ExponentialRetry(initial_backoff: int = 15, increment_base: int = 3, retry_total: int = 3, retry_to_secondary: bool = False, random_jitter_range: int = 3, **kwargs: Any)

Parameters

Name Description
initial_backoff
int

The initial backoff interval, in seconds, for the first retry.

Default value: 15
increment_base
int

The base, in seconds, to increment the initial_backoff by after the first retry.

Default value: 3
retry_total
int

The maximum number of retry attempts.

Default value: 3
retry_to_secondary
bool

Whether the request should be retried to secondary, if able. This should only be enabled of RA-GRS accounts are used and potentially stale data can be handled.

Default value: False
random_jitter_range
int

A number in seconds which indicates a range to jitter/randomize for the back-off interval. For example, a random_jitter_range of 3 results in the back-off interval x to vary between x+3 and x-3.

Default value: 3

Methods

configure_retries
get_backoff_time

Calculates how long to sleep before retrying.
increment

Increment the retry counters.
send
sleep

configure_retries 

configure_retries(request: PipelineRequest) -> Dict[str, Any]

Parameters

Name Description
request
Required

get_backoff_time

Calculates how long to sleep before retrying.

get_backoff_time(settings: Dict[str, Any]) -> float

Parameters

Name Description
settings
Required
Dict[str, Any]]

The configurable values pertaining to get backoff time.

Returns

Type Description
float

A float indicating how long to wait before retrying the request, or None to indicate no retry should be performed.

increment

Increment the retry counters.

increment(settings: Dict[str, Any], request: PipelineRequest, response: PipelineResponse | None = None, error: AzureError | None = None) -> bool

Parameters

Name Description
settings
Required
dict[str, Any]

The configurable values pertaining to the increment operation.
request
Required
<xref:PipelineRequest>

A pipeline request object.
response
Optional[<xref:PipelineResponse>]

A pipeline response object.

Default value: None
error
Optional[<xref:AzureError>]

An error encountered during the request, or None if the response was received successfully.

Default value: None

Returns

Type Description
bool

Whether the retry attempts are exhausted.

send 

send(request)

Parameters

Name Description
request
Required

sleep 

sleep(settings, transport)

Parameters

Name Description
settings
Required
transport
Required

Attributes

connect_retries

The max number of connect retries.

connect_retries: int

increment_base

The base, in seconds, to increment the initial_backoff by after the first retry.

increment_base: int

initial_backoff

The initial backoff interval, in seconds, for the first retry.

initial_backoff: int

next

Pointer to the next policy or a transport (wrapped as a policy). Will be set at pipeline creation.

next: HTTPPolicy[HTTPRequestType, HTTPResponseType]

random_jitter_range

A number in seconds which indicates a range to jitter/randomize for the back-off interval.

random_jitter_range: int

retry_read

The max number of read retries.

retry_read: int

retry_status

The max number of status retries.

retry_status: int

retry_to_secondary

Whether the secondary endpoint should be retried.

retry_to_secondary: bool

total_retries

The max number of retries.

total_retries: int