@allgemein/eventbus/adapter/redis/AbstractRedisConnection.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.AbstractRedisConnection = void 0;
const events_1 = require("events");
const redis_1 = require("redis");
const lodash_1 = require("lodash");
class AbstractRedisConnection extends events_1.EventEmitter {
    constructor(options) {
        super();
        this.inc = 0;
        this.ready = false;
        this.errored = false;
        this.options = options;
    }
    isOpened() {
        return this.ready;
    }
    async getClient(connect = true) {
        if (!this.client) {
            if (connect) {
                this.client = (await this.connect());
            }
            else {
                throw new Error('No redis client found.');
            }
        }
        return this.client;
    }
    async connect() {
        if (this.ready) {
            return Promise.resolve(this.client);
        }
        this.ready = false;
        let url = this.options.url;
        if (!url) {
            // redis://alice:foobared@awesome.redis.server:6380
            let host = '';
            if (this.options.host) {
                host += this.options.host;
            }
            else {
                host += 'localhost';
            }
            if (this.options.port) {
                host += ':' + this.options.port;
            }
            else {
                host += ':6379';
            }
            let user = '';
            if (this.options.username && this.options.password) {
                user += this.options.username + ':' + this.options.password;
            }
            if (user) {
                url = 'redis://' + user + '@' + host;
            }
            else {
                url = 'redis://' + host;
            }
            this.options.url = url;
        }
        // console.log(this.constructor.name + ' connect ' + this.inc + ' ' + this.options.url);
        const client = (0, redis_1.createClient)(this.options);
        try {
            await client.connect();
            this.ready = true;
            if ((0, lodash_1.get)(this.options, 'unref', false)) {
                client.unref();
            }
            // console.log(this.constructor.name + ' connected ' + this.inc + ' ' + this.options.url);
        }
        catch (err) {
            this.ready = false;
            if (this.client) {
                this.client.removeAllListeners();
                this.client = null;
            }
            err.message = err.message + ' (#onError ' + this.constructor.name + ')';
            throw err;
        }
        return client;
    }
    async quit() {
        if (!this.ready) {
            return Promise.resolve();
        }
        if (!this.client) {
            return Promise.resolve();
        }
        this.ready = false;
        const c = this.client;
        await c.quit();
        if (c) {
            c.removeAllListeners();
            this.client = null;
        }
    }
}
exports.AbstractRedisConnection = AbstractRedisConnection;
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