Files
OmniRoute/open-sse/executors/antigravityUpstreamError.ts
Diego Rodrigues de Sa e Souza 62e6336aad fix(antigravity): alias agy gemini-3.1-pro -high/-low + stop masking upstream 4xx (#3229) (#3245)
agy's gemini-3.1-pro-high/-low had no alias, so resolveAntigravityModelId sent the
speculative -high/-low suffix verbatim to upstream, which rejects it (400) for
gemini-3.x. Worse, the non-stream executor branch fed the 4xx response into the SSE
collector, returning a synthetic empty {object:chat.completion} envelope that masked
the error. Alias both to gemini-3.1-pro, and surface real upstream errors via
buildErrorBody for non-ok non-stream responses. + unit tests.
2026-06-05 14:20:05 -03:00

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TypeScript

/**
* Build a sanitized OpenAI-style error body for a non-ok Antigravity/agy upstream
* response (#3229).
*
* The non-streaming executor path previously fed 4xx/5xx responses into the SSE
* collector, which produced a synthetic `{"object":"chat.completion","content":""}`
* success envelope — masking the real error. Route non-ok responses through
* `buildErrorBody` instead so the client sees a proper error (hard rule #12).
*/
import { buildErrorBody } from "../utils/error.ts";
export function buildAntigravityUpstreamError(
status: number,
statusText: string,
rawBody: string
) {
let upstreamDetails: unknown;
try {
upstreamDetails = JSON.parse(rawBody);
} catch {
// upstream body is not JSON (e.g. HTML error page) — omit structured details
}
const suffix = statusText ? `: ${statusText}` : "";
return buildErrorBody(status, `Antigravity upstream error (${status})${suffix}`, upstreamDetails);
}