fix: handle HTTP 529 (Anthropic overloaded) in failover error classification

Classify Anthropic's 529 status code as "rate_limit" so model fallback
triggers reliably without depending on fragile message-based detection.

Closes #28502
This commit is contained in:
Saurabh 2026-03-02 21:03:37 +05:30 committed by Peter Steinberger
parent 84d9b64326
commit 1ef9a2a8ea
2 changed files with 5 additions and 0 deletions

View File

@ -18,6 +18,8 @@ describe("failover-error", () => {
expect(resolveFailoverReasonFromError({ status: 502 })).toBe("timeout");
expect(resolveFailoverReasonFromError({ status: 503 })).toBe("timeout");
expect(resolveFailoverReasonFromError({ status: 504 })).toBe("timeout");
// Anthropic 529 (overloaded) should trigger failover as rate_limit.
expect(resolveFailoverReasonFromError({ status: 529 })).toBe("rate_limit");
});
it("infers format errors from error messages", () => {

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@ -178,6 +178,9 @@ export function resolveFailoverReasonFromError(err: unknown): FailoverReason | n
if (status === 502 || status === 503 || status === 504) {
return "timeout";
}
if (status === 529) {
return "rate_limit";
}
if (status === 400) {
return "format";
}