53 lines
1.6 KiB
TypeScript
53 lines
1.6 KiB
TypeScript
import express, { Request, Response, NextFunction } from "express";
|
|
import { gatekeeper } from "./gatekeeper";
|
|
import { checkRisuToken } from "./check-risu-token";
|
|
import { openai } from "./openai";
|
|
import { openaiImage } from "./openai-image";
|
|
import { anthropic } from "./anthropic";
|
|
import { googlePalm } from "./palm";
|
|
import { aws } from "./aws";
|
|
|
|
const proxyRouter = express.Router();
|
|
proxyRouter.use((req, _res, next) => {
|
|
if (req.headers.expect) {
|
|
// node-http-proxy does not like it when clients send `expect: 100-continue`
|
|
// and will stall. none of the upstream APIs use this header anyway.
|
|
delete req.headers.expect;
|
|
}
|
|
next();
|
|
});
|
|
proxyRouter.use(
|
|
express.json({ limit: "1536kb" }),
|
|
express.urlencoded({ extended: true, limit: "1536kb" })
|
|
);
|
|
proxyRouter.use(gatekeeper);
|
|
proxyRouter.use(checkRisuToken);
|
|
proxyRouter.use((req, _res, next) => {
|
|
req.startTime = Date.now();
|
|
req.retryCount = 0;
|
|
next();
|
|
});
|
|
proxyRouter.use("/openai", addV1, openai);
|
|
proxyRouter.use("/openai-image", addV1, openaiImage);
|
|
proxyRouter.use("/anthropic", addV1, anthropic);
|
|
proxyRouter.use("/google-palm", addV1, googlePalm);
|
|
proxyRouter.use("/aws/claude", addV1, aws);
|
|
// Redirect browser requests to the homepage.
|
|
proxyRouter.get("*", (req, res, next) => {
|
|
const isBrowser = req.headers["user-agent"]?.includes("Mozilla");
|
|
if (isBrowser) {
|
|
res.redirect("/");
|
|
} else {
|
|
next();
|
|
}
|
|
});
|
|
export { proxyRouter as proxyRouter };
|
|
|
|
function addV1(req: Request, res: Response, next: NextFunction) {
|
|
// Clients don't consistently use the /v1 prefix so we'll add it for them.
|
|
if (!req.path.startsWith("/v1/")) {
|
|
req.url = `/v1${req.url}`;
|
|
}
|
|
next();
|
|
}
|