2023-01-13 13:40:33 +09:00
|
|
|
import Limiter from "ratelimiter";
|
|
|
|
import { CacheableLocalUser, User } from "@/models/entities/user.js";
|
|
|
|
import Logger from "@/services/logger.js";
|
|
|
|
import { redisClient } from "../../db/redis.js";
|
|
|
|
import type { IEndpointMeta } from "./endpoints.js";
|
2016-12-29 07:49:51 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
const logger = new Logger("limiter");
|
2017-01-23 18:25:52 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
export const limiter = (
|
|
|
|
limitation: IEndpointMeta["limit"] & { key: NonNullable<string> },
|
|
|
|
actor: string,
|
|
|
|
) =>
|
|
|
|
new Promise<void>((ok, reject) => {
|
|
|
|
if (process.env.NODE_ENV === "test") ok();
|
2022-06-26 19:16:32 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
const hasShortTermLimit = typeof limitation.minInterval === "number";
|
2016-12-29 07:49:51 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
const hasLongTermLimit =
|
|
|
|
typeof limitation.duration === "number" &&
|
|
|
|
typeof limitation.max === "number";
|
2016-12-29 07:49:51 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
if (hasShortTermLimit) {
|
|
|
|
min();
|
|
|
|
} else if (hasLongTermLimit) {
|
|
|
|
max();
|
|
|
|
} else {
|
|
|
|
ok();
|
|
|
|
}
|
2016-12-29 07:49:51 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
// Short-term limit
|
|
|
|
function min(): void {
|
|
|
|
const minIntervalLimiter = new Limiter({
|
|
|
|
id: `${actor}:${limitation.key}:min`,
|
|
|
|
duration: limitation.minInterval,
|
|
|
|
max: 1,
|
|
|
|
db: redisClient,
|
|
|
|
});
|
2016-12-29 07:49:51 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
minIntervalLimiter.get((err, info) => {
|
|
|
|
if (err) {
|
|
|
|
return reject("ERR");
|
|
|
|
}
|
2017-01-23 18:25:52 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
logger.debug(
|
|
|
|
`${actor} ${limitation.key} min remaining: ${info.remaining}`,
|
|
|
|
);
|
2017-01-23 18:25:52 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
if (info.remaining === 0) {
|
|
|
|
reject("BRIEF_REQUEST_INTERVAL");
|
2016-12-29 07:49:51 +09:00
|
|
|
} else {
|
2023-01-13 13:40:33 +09:00
|
|
|
if (hasLongTermLimit) {
|
|
|
|
max();
|
|
|
|
} else {
|
|
|
|
ok();
|
|
|
|
}
|
2016-12-29 07:49:51 +09:00
|
|
|
}
|
2023-01-13 13:40:33 +09:00
|
|
|
});
|
|
|
|
}
|
2016-12-29 07:49:51 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
// Long term limit
|
|
|
|
function max(): void {
|
|
|
|
const limiter = new Limiter({
|
|
|
|
id: `${actor}:${limitation.key}`,
|
|
|
|
duration: limitation.duration,
|
|
|
|
max: limitation.max,
|
|
|
|
db: redisClient,
|
|
|
|
});
|
2016-12-29 07:49:51 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
limiter.get((err, info) => {
|
|
|
|
if (err) {
|
|
|
|
return reject("ERR");
|
|
|
|
}
|
2017-01-23 18:25:52 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
logger.debug(
|
|
|
|
`${actor} ${limitation.key} max remaining: ${info.remaining}`,
|
|
|
|
);
|
2017-01-23 18:25:52 +09:00
|
|
|
|
2023-01-13 13:40:33 +09:00
|
|
|
if (info.remaining === 0) {
|
|
|
|
reject("RATE_LIMIT_EXCEEDED");
|
|
|
|
} else {
|
|
|
|
ok();
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
});
|