nest-ratelimiter/asserter.svc.js

Distributed consistent flexible NestJS rate limiter based on Redis

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
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    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
    return function (target, key) { decorator(target, key, paramIndex); }
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.rateLimiterAsserterProvider = exports.RateLimiterAsserterImpl = void 0;
const common_1 = require("@nestjs/common");
const asserter_interface_1 = require("./asserter.interface");
const params_1 = require("./params");
const default_error_body_creator_1 = require("./utils/default-error-body-creator");
const get_limit_1 = require("./utils/get-limit");
let RateLimiterAsserterImpl = class RateLimiterAsserterImpl {
    defaultParams;
    constructor(defaultParams) {
        this.defaultParams = defaultParams;
    }
    async assert(params) {
        let limiterInfo;
        try {
            limiterInfo = await (0, get_limit_1.getLimit)({
                id: params.id,
                db: this.defaultParams.db,
                max: params.max || this.defaultParams.max,
                duration: params.duration || this.defaultParams.duration,
            });
        }
        catch (error) /* istanbul ignore next */ {
            // Redis error while creating limiter
            throw new common_1.InternalServerErrorException('Can not create rate limiter', String(error));
        }
        if (limiterInfo.remaining < 1) {
            const body = (params.createErrorBody ||
                this.defaultParams.createErrorBody ||
                default_error_body_creator_1.defaultErrorBodyCreator)(limiterInfo);
            throw new asserter_interface_1.RateLimiterError(body, limiterInfo);
        }
        return limiterInfo;
    }
};
exports.RateLimiterAsserterImpl = RateLimiterAsserterImpl;
exports.RateLimiterAsserterImpl = RateLimiterAsserterImpl = __decorate([
    __param(0, (0, common_1.Inject)(params_1.MODULE_PARAMS_TOKEN)),
    __metadata("design:paramtypes", [Object])
], RateLimiterAsserterImpl);
exports.rateLimiterAsserterProvider = {
    provide: asserter_interface_1.RATE_LIMITER_ASSERTER_TOKEN,
    useClass: RateLimiterAsserterImpl,
};
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