[codex] Add provider failure classification helpers#24
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| _ => message.to_ascii_lowercase(), | ||
| }; | ||
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| if status == Some(429) || text_indicates_rate_limit(&lower) { |
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Treat statusless quota errors as terminal
When this helper is called from SseState::stream_error it passes status: None, so a streamed error whose code/message is insufficient_quota, quota exhausted, out of credits, or provider code 1311 does not enter this branch unless the text also contains 429/rate-limit wording. It then skips the non-retryable-rate-limit check and falls through to ProviderFailureClass::Retryable, causing the agent retry/fallback loops to repeat permanent billing/plan failures. Check text_indicates_non_retryable_rate_limit before gating on status == Some(429)/rate-limit text.
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| for (idx, _) in message.match_indices('(') { | ||
| if let Some(status) = parse_status_at(message, idx + 1) { | ||
| return Some(status); | ||
| } |
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Stop parsing any parenthesized 3-digit number as status
For statusless provider messages, this loop treats every (...) value that starts with exactly three digits as an HTTP status. A validation error such as invalid embedding dimension (512) or max_tokens (500) exceeds the limit is therefore classified as a 5xx UpstreamUnhealthy and marked retryable, even though no HTTP status was present; this affects streamed errors because they call the classifier with status: None. Restrict the parenthesized parse to known envelopes like API error ( or require an explicit HTTP/status marker.
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Summary
Validation