mirror of https://github.com/garrytan/gstack.git
58 lines
2.0 KiB
TypeScript
58 lines
2.0 KiB
TypeScript
/**
|
|
* receipted-fetch — egress-receipted wrapper for the design binary's OpenAI
|
|
* calls (sink 'design-openai').
|
|
*
|
|
* Writes a content-free receipt BEFORE the send: sha256 of the JSON body
|
|
* plus a byte count — the hash only, never the body itself. FAIL-OPEN: a
|
|
* receipt hiccup warns on stderr and the call proceeds. User-facing image
|
|
* generation must not die because an audit log could not be written (the
|
|
* ledger records ATTEMPTED egress for auditing; it is not a send gate here).
|
|
*
|
|
* Streams pass through untouched: the response is returned as-is, and a
|
|
* non-string request body (e.g. a ReadableStream) is receipted as
|
|
* sha256:null rather than being consumed to hash it.
|
|
*/
|
|
|
|
import { sha256Hex, writeReceipt } from "../../lib/egress-receipt";
|
|
|
|
export type FetchLike = typeof globalThis.fetch;
|
|
|
|
/**
|
|
* Drop-in fetch replacement for api.openai.com calls.
|
|
*
|
|
* @param payloadClass content-free description of what is being sent
|
|
* (e.g. 'generate-image-request', 'check-screenshot-request')
|
|
* @param fetchImpl injectable fetch for tests / callers with their own
|
|
* fetch (variants.ts passes its stubbed fetchFn through)
|
|
*/
|
|
export async function receiptedFetch(
|
|
payloadClass: string,
|
|
url: string,
|
|
init?: RequestInit,
|
|
fetchImpl: FetchLike = globalThis.fetch,
|
|
): Promise<Response> {
|
|
try {
|
|
const body = init?.body;
|
|
let bytes = 0;
|
|
let sha256: string | null = null;
|
|
if (typeof body === "string") {
|
|
bytes = Buffer.byteLength(body);
|
|
sha256 = sha256Hex(body);
|
|
}
|
|
writeReceipt({
|
|
sink: "design-openai",
|
|
host: new URL(url).host,
|
|
payloadClass,
|
|
bytes,
|
|
sha256,
|
|
consent: "user ran design command (OPENAI_API_KEY configured)",
|
|
});
|
|
} catch (err) {
|
|
process.stderr.write(
|
|
`[design] egress receipt could not be written (${(err as Error).message}) — proceeding (fail-open). ` +
|
|
`gstack records what it ATTEMPTS to send off-machine; see gstack-egress.\n`,
|
|
);
|
|
}
|
|
return fetchImpl(url, init);
|
|
}
|