prisma-risk / tsoracle / 26297664062

95%

Build Type

push

github

Committed by web-flow

Commit Message

feat(client): add RetryPolicy with deadlines, keepalive, and jittered backoff (#114)

Closes #85. A blackholed peer (network partition with no RST) could park
`connect()` indefinitely, blocking every queued waiter behind the single
in-flight RPC the driver serializes for the freshness invariant.

- Add `RetryPolicy { max_attempts, per_attempt_deadline, overall_deadline, base_backoff }` exposed via `ClientBuilder::retry_policy` with defaults `5`, `2s`, `10s`, `50ms`.
- Wrap each `(pool.client, client.get_ts)` attempt in `tokio::time::timeout(per_attempt_deadline, ...)` and short-circuit the retry loop on `overall_deadline`.
- Push `per_attempt_deadline` down to `tonic::transport::Endpoint::connect_timeout`/`Endpoint::timeout` and apply `keep_alive_while_idle(true)` plus a 30s HTTP/2 keepalive interval, on both the built-in plaintext path and the built-in TLS connector.
- Apply jittered exponential backoff (full-jitter, capped at 5s) between attempts whose last error was `Unavailable`, `DeadlineExceeded`, or a transport-layer failure. FAILED_PRECONDITION-with-hint redirects do not back off.

Coverage Stats

310 of 323 new or added lines in 5 files covered. (95.98%)

3 existing lines in 1 file now uncovered.

6827 of 7091 relevant lines covered (96.28%)

78393.22 hits per line