@northscaler/redis-test-support/redis/redis-connect.js

Redis Node.js Development Test Support Library

'use strict';

const fs = require('fs');

const Redis = require('redis');

const startRedis = require('./start-redis');

const defaultPort = parseInt(fs.readFileSync(`${__dirname}/default-redis-test-port`));
const defaultContainerName = fs.readFileSync(`${__dirname}/default-redis-test-container`).toString('utf8').trim();
let client;

async function redisConnect({
  // redis.creatClient opts
  port = defaultPort
} = {}, {
  // redisConnect opts
  waitUntilReady = true
} = {}) {
  if (client) return client;
  let start = Date.now();

  if (!process.env.CI) {
    await startRedis();
    console.log(`started redis container in ${Date.now() - start} ms`);
  } else {
    console.log('skipped launching container');
  }

  arguments[0] = arguments[0] || {};
  arguments[0].port = arguments[0].port || defaultPort;
  start = Date.now();
  client = Redis.createClient(arguments[0]);
  return waitUntilReady ? new Promise((resolve, reject) => {
    client.on('error', reject);
    client.on('ready', () => {
      console.log(`connected to redis in ${Date.now() - start} ms`);
      resolve(client);
    });
  }) : client;
}

redisConnect.defaultPort = defaultPort;
redisConnect.defaultContainerName = defaultContainerName;
module.exports = redisConnect;
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