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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| import { getServerSideConfig } from "@/app/config/server"; | ||
| import { | ||
| SILICONFLOW_BASE_URL, | ||
| ApiPath, | ||
| ModelProvider, | ||
| ServiceProvider, | ||
| } from "@/app/constant"; | ||
| import { prettyObject } from "@/app/utils/format"; | ||
| import { NextRequest, NextResponse } from "next/server"; | ||
| import { auth } from "@/app/api/auth"; | ||
| import { isModelNotavailableInServer } from "@/app/utils/model"; | ||
|
|
||
| const serverConfig = getServerSideConfig(); | ||
|
|
||
| export async function handle( | ||
| req: NextRequest, | ||
| { params }: { params: { path: string[] } }, | ||
| ) { | ||
| console.log("[SiliconFlow Route] params ", params); | ||
|
|
||
| if (req.method === "OPTIONS") { | ||
| return NextResponse.json({ body: "OK" }, { status: 200 }); | ||
| } | ||
|
|
||
| const authResult = auth(req, ModelProvider.SiliconFlow); | ||
| if (authResult.error) { | ||
| return NextResponse.json(authResult, { | ||
| status: 401, | ||
| }); | ||
| } | ||
|
|
||
| try { | ||
| const response = await request(req); | ||
| return response; | ||
| } catch (e) { | ||
| console.error("[SiliconFlow] ", e); | ||
| return NextResponse.json(prettyObject(e)); | ||
| } | ||
| } | ||
|
|
||
| async function request(req: NextRequest) { | ||
| const controller = new AbortController(); | ||
|
|
||
| // alibaba use base url or just remove the path | ||
| let path = `${req.nextUrl.pathname}`.replaceAll(ApiPath.SiliconFlow, ""); | ||
|
|
||
| let baseUrl = serverConfig.siliconFlowUrl || SILICONFLOW_BASE_URL; | ||
|
|
||
| if (!baseUrl.startsWith("http")) { | ||
| baseUrl = `https://${baseUrl}`; | ||
| } | ||
|
|
||
| if (baseUrl.endsWith("/")) { | ||
| baseUrl = baseUrl.slice(0, -1); | ||
| } | ||
|
|
||
| console.log("[Proxy] ", path); | ||
| console.log("[Base Url]", baseUrl); | ||
|
|
||
| const timeoutId = setTimeout( | ||
| () => { | ||
| controller.abort(); | ||
| }, | ||
| 10 * 60 * 1000, | ||
| ); | ||
|
|
||
| const fetchUrl = `${baseUrl}${path}`; | ||
| const fetchOptions: RequestInit = { | ||
| headers: { | ||
| "Content-Type": "application/json", | ||
| Authorization: req.headers.get("Authorization") ?? "", | ||
| }, | ||
| method: req.method, | ||
| body: req.body, | ||
| redirect: "manual", | ||
| // @ts-ignore | ||
| duplex: "half", | ||
| signal: controller.signal, | ||
| }; | ||
|
|
||
| // #1815 try to refuse some request to some models | ||
| if (serverConfig.customModels && req.body) { | ||
| try { | ||
| const clonedBody = await req.text(); | ||
| fetchOptions.body = clonedBody; | ||
|
|
||
| const jsonBody = JSON.parse(clonedBody) as { model?: string }; | ||
|
|
||
| // not undefined and is false | ||
| if ( | ||
| isModelNotavailableInServer( | ||
| serverConfig.customModels, | ||
| jsonBody?.model as string, | ||
| ServiceProvider.SiliconFlow as string, | ||
| ) | ||
| ) { | ||
| return NextResponse.json( | ||
| { | ||
| error: true, | ||
| message: `you are not allowed to use ${jsonBody?.model} model`, | ||
| }, | ||
| { | ||
| status: 403, | ||
| }, | ||
| ); | ||
| } | ||
| } catch (e) { | ||
| console.error(`[SiliconFlow] filter`, e); | ||
| } | ||
| } | ||
| try { | ||
| const res = await fetch(fetchUrl, fetchOptions); | ||
|
|
||
| // to prevent browser prompt for credentials | ||
| const newHeaders = new Headers(res.headers); | ||
| newHeaders.delete("www-authenticate"); | ||
| // to disable nginx buffering | ||
| newHeaders.set("X-Accel-Buffering", "no"); | ||
|
|
||
| return new Response(res.body, { | ||
| status: res.status, | ||
| statusText: res.statusText, | ||
| headers: newHeaders, | ||
| }); | ||
| } finally { | ||
| clearTimeout(timeoutId); | ||
| } | ||
| } |
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