@routup/rate-limit-redis/dist/index.cjs

Red adapter for the routup rate-limit plugin.

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var redisExtension = require('redis-extension');
var rateLimit = require('@routup/rate-limit');

class RedisStore {
    /**
     * Method that initializes the store.
     *
     * @param options {Options} - The options used to setup the middleware.
     */ init(options) {
        this.options = options;
    }
    /**
     * Method to increment a client's hit counter.
     *
     * @param key {string} - The identifier for a client.
     *
     * @returns {IncrementResponse} - The number of hits and reset time for that client.
     *
     * @public
     */ async increment(key) {
        key = this.buildKey(key);
        const entry = await this.client.get(key);
        let totalHits;
        if (entry) {
            totalHits = parseInt(entry, 10) + 1;
        } else {
            totalHits = 1;
        }
        this.client.set(key, totalHits, 'PX', this.options.windowMs);
        const resetTime = rateLimit.calculateNextResetTime(this.options.windowMs);
        return {
            totalHits,
            resetTime
        };
    }
    /**
     * Method to decrement a client's hit counter.
     *
     * @param key {string} - The identifier for a client.
     *
     * @public
     */ async decrement(key) {
        key = this.buildKey(key);
        const entry = await this.client.get(key);
        if (entry) {
            const totalHits = parseInt(entry, 10) - 1;
            this.client.set(key, totalHits, 'PX', this.options.windowMs);
        }
    }
    /**
     * Method to reset a client's hit counter.
     *
     * @param key {string} - The identifier for a client.
     *
     * @public
     */ async reset(key) {
        key = this.buildKey(key);
        this.client.del(key);
    }
    /**
     * Method to build redis key.
     *
     * @param key
     * @protected
     */ buildKey(key) {
        return `rate-limit:${key}`;
    }
    constructor(connectionString){
        if (typeof connectionString === 'undefined') {
            this.client = redisExtension.useClient();
        } else {
            this.client = redisExtension.createClient({
                connectionString
            });
        }
    }
}

exports.RedisStore = RedisStore;
exports.default = RedisStore;
module.exports = Object.assign(exports.default, exports);
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