Customize response check for retry and error #3154
Description
Feature Summary
Configurable code to determine whether a given HTTP response is retriable or even an error in the first place.
Feature Description
Azure SDK in other languages has the concept of a "response classifier" which determines whether the retry policy should retry it as well as whether it is considered an error. There is a default classifier that can be replaced at the pipeline level as well as the request level.
This allows services with specialty needs on retry or error classification to achieve that goal independent of the code that actually operates based on that knowledge, allowing use of default retry and logging policies instead of requiring custom ones.
Use Case
APIs where a 4xx response is part of standard workflow (e.g. checking if blob exists) need to prevent classification as an error (e.g. by an error logger).
Alternatives
No response
Additional Context
issue #2190