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64 lines
2.1 KiB
JavaScript
64 lines
2.1 KiB
JavaScript
// 请求预处理
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// 在请求被处理之前执行的函数
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//
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// @param {Object} ctx - 请求上下文对象
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// @returns {Object|undefined} - 返回修改后的请求对象或 undefined
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//
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// 参考: [JS Rt](./middleware/js_rt.go) 里的 `JSContext`
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function preProcessRequest(ctx) {
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// 例子:基于数据库的速率限制
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// if (ctx.url.includes("/v1/chat/completions")) {
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// try {
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// // Check recent requests from this IP
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// var recentRequests = db.Query(
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// "SELECT COUNT(*) as count FROM logs WHERE created_at > ? AND ip = ?",
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// Math.floor(Date.now() / 1000) - 60, // last minute
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// ctx.remoteIP
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// );
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// if (recentRequests && recentRequests.length > 0 && recentRequests[0].count > 10) {
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// console.log("速率限制 IP:", ctx.RemoteIP);
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// return {
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// block: true,
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// statusCode: 429,
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// message: "超过速率限制"
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// };
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// }
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// } catch (e) {
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// console.error("Ratelimit 数据库错误:", e);
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// }
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// }
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// 例子:修改请求
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if (ctx.URL.includes("/v1/chat/completions")) {
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try {
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var bodyObj = ctx.Body;
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let firstMsg = {
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role: "user",
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content: "今天天气怎么样"
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};
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bodyObj.messages[0] = firstMsg;
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console.log("Modified first message:", JSON.stringify(firstMsg));
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console.log("Modified body:", JSON.stringify(bodyObj));
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return {
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body: bodyObj,
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headers: {
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...ctx.Headers,
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"X-Modified-Body": "true"
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}
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};
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} catch (e) {
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console.error("Failed to modify request body:", {
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message: e.message,
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stack: e.stack,
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bodyType: typeof ctx.Body,
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url: ctx.URL
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});
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}
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}
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return undefined; // 跳过处理,继续执行下一个中间件或路由
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}
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