uptime-kuma/server/rate-limiter.js
2021-11-11 12:31:28 +01:00

39 lines
1,005 B
JavaScript

const { RateLimiter } = require("limiter");
const { log } = require("../src/util");
class KumaRateLimiter {
constructor(config) {
this.errorMessage = config.errorMessage;
this.rateLimiter = new RateLimiter(config);
}
async pass(callback, num = 1) {
const remainingRequests = await this.removeTokens(num);
log("rate-limit", "remaining requests: " + remainingRequests);
if (remainingRequests < 0) {
if (callback) {
callback({
ok: false,
msg: this.errorMessage,
});
}
return false;
}
return true;
}
async removeTokens(num = 1) {
return await this.rateLimiter.removeTokens(num);
}
}
const loginRateLimiter = new KumaRateLimiter({
tokensPerInterval: 20,
interval: "minute",
fireImmediately: true,
errorMessage: "Too frequently, try again later."
});
module.exports = {
loginRateLimiter
};