Construct a polling policy from existing Retry and Backoff policies.
A polling policy can be built by composing a retry and backoff policy. For example, to create a polling policy that "retries N times, waiting a fixed
period between retries" you could compose the "try N times" retry policy with the "wait a fixed period between retries" backoff policy.
This class makes it easier to create such composed polling policies.
Constructors
GenericPollingPolicy(Retry, Backoff)
Parameters
Name
Description
retry_policy
Retry
backoff_policy
Backoff
Functions
virtual clone() const
Return a copy of the current policy.
This function is called at the beginning of the polling loop. Policies that are based on relative time should restart their timers when this function is called.
Returns
Type
Description
std::unique_ptr< PollingPolicy >
virtual OnFailure(Status const &)
A callback to indicate that a polling attempt failed.
This is called when a polling request fails. Note that this callback is not invoked when the polling request succeeds with "operation not done".
Parameter
Name
Description
status
Status const &
Returns
Type
Description
bool
true if the failure should be treated as transient and the polling loop should continue.
virtual WaitPeriod()
How long should the polling loop wait before trying again.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-26 UTC."],[[["The webpage provides documentation for the `GenericPollingPolicy` class in the Google Cloud C++ client library, with version 2.37.0-rc being the latest release candidate."],["This class allows developers to create custom polling policies by combining retry and backoff policies, defining how often and under what conditions a process should be retried."],["The `GenericPollingPolicy` class includes methods like `clone()`, `OnFailure()`, and `WaitPeriod()` to manage the polling loop, handle failures, and specify wait times between attempts."],["The webpage showcases various versions of the generic polling policy, from 2.10.1 all the way up to the most recent 2.37.0-rc."]]],[]]
