fix: update object passed to createClient to match node-redis v4 specs (GoogleCloudPlatform#2681)

Author: pattishin

functions/memorystore/redis/index.js

@@ -22,7 +22,13 @@ const redis = require('redis');
 const REDISHOST = process.env.REDISHOST || 'localhost';
 const REDISPORT = process.env.REDISPORT || 6379;
 
-const redisClient = redis.createClient(REDISPORT, REDISHOST);
+const redisClient = redis.createClient({
+ socket: {
+ port: REDISPORT,
+ host: REDISHOST,
+ },
+});
+redisClient.connect();
 redisClient.on('error', err => console.error('ERR:REDIS:', err));
 
 const incrAsync = promisify(redisClient.incr).bind(redisClient);