Retry on HTTP 400 / "failedPrecondition" by ttung · Pull Request #2724 · googleapis/google-api-python-client
Summary of Changes
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This pull request enhances the client's robustness by improving its error handling and retry mechanisms. It centralizes the logic for parsing error reasons from HTTP response bodies and extends the automatic retry functionality to include specific HTTP 400 errors, alongside existing HTTP 403 rate limit retries. This change aims to make the client more resilient to transient API issues without requiring manual intervention.
Highlights
- Error Decoding Refactoring: Extracted the logic for decoding the error reason from the HTTP response content into a new private helper function,
_decode_reason_from_content. - HTTP 400 Retry Logic: Implemented a new retry condition for HTTP 400 (Bad Request) responses specifically when the error reason is "failedPrecondition", which is observed in some Gmail API scenarios.
- HTTP 403 Retry Logic Update: Refactored the existing retry logic for HTTP 403 (Forbidden) responses to utilize the newly extracted
_decode_reason_from_contenthelper function, improving code reusability and readability.
Changelog
- googleapiclient/http.py
- Extracted error decoding logic into a new helper function
_decode_reason_from_content. - Added retry mechanism for HTTP 400 responses with a 'failedPrecondition' reason.
- Updated HTTP 403 retry logic to use the new
_decode_reason_from_contentfunction.
- Extracted error decoding logic into a new helper function
Activity
- The pull request addresses and fixes issue HTTP 400 / preconditionFailed should be retried #2723.
- The author has marked the task to open an issue as a bug/issue as complete.
- Remaining checklist items include ensuring tests and linter pass, code coverage does not decrease, and appropriate docs are updated.
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