tenacity retry gap scanner

I have completed the resilience audit of the ./services/payments directory. I scanned 14 Python files and identified 3 high-risk gaps where outbound calls lack transient failure protection.

Tenacity Retry Gap Report

Recommended Fix: GAP-1-a8f2 (Stripe API)

The following snippet has been generated in ./output/patches/GAP-1-a8f2.py. It uses tenacity to handle transient network errors and 429/5xx status codes specifically for the httpx library.

import logging
import httpx
from tenacity import (retry, retry_if_exception, stop_after_attempt, 
                      stop_after_delay, wait_exponential_jitter, before_sleep_log)

log = logging.getLogger(__name__)
_TRANSIENT_STATUS = {408, 429, 500, 502, 503, 504}

def _is_transient(exc: BaseException) -> bool:
    if isinstance(exc, (httpx.TimeoutException, httpx.NetworkError)):
        return True
    return isinstance(exc, httpx.HTTPStatusError) and exc.response.status_code in _TRANSIENT_STATUS

@retry(
    retry=retry_if_exception(_is_transient),
    stop=stop_after_attempt(3) | stop_after_delay(15),
    wait=wait_exponential_jitter(initial=1, max=10),
    before_sleep=before_sleep_log(log, logging.WARNING),
    reraise=True,
)
def post_transaction(client: httpx.Client, payload: dict):
    # Wrapped to handle transient Stripe connection issues
    resp = client.post("https://api.stripe.com/v1/charges", json=payload)
    resp.raise_for_status()
    return resp.json()

Next steps

1. Review the full report at ./output/tenacity-retry-gap-scanner-report.md.
2. Apply the generated patches in ./output/patches/ to your source files.
3. Ensure tenacity is added to your requirements.txt or pyproject.toml.