have redis working

src/utils/redisClient.ts

@@ -0,0 +1,124 @@
+import Redis, { RedisOptions } from 'ioredis';
+import { sleep } from './utils';
+
+export const getRedisClient = (
+	host?: string,
+	port?: string,
+	password?: string,
+	db?: number,
+	opts?: RedisOptions
+): Redis => {
+	if (host && port) {
+		console.log(`Connecting to configured redis:: ${host}:${port}`);
+
+		const redisClient = new Redis({
+			host: host,
+			port: parseInt(port, 10),
+			password: password,
+			...(opts ?? {}),
+			retryStrategy: (times) => {
+				const delay = Math.min(times * 1000, 10000);
+				console.log(
+					`Reconnecting to Redis in ${delay}ms... (retries: ${times})`
+				);
+				return delay;
+			},
+			reconnectOnError: (err) => {
+				const targetError = 'ECONNREFUSED';
+				if (err.message.includes(targetError)) {
+					console.log(
+						`Redis error: ${targetError}. Attempting to reconnect...`
+					);
+					return true;
+				}
+				return false;
+			},
+			maxRetriesPerRequest: null, // unlimited retries
+		});
+
+		redisClient.on('connect', () => {
+			console.log('Connected to Redis.');
+		});
+
+		redisClient.on('error', (err) => {
+			console.error('Redis error:', err);
+		});
+
+		redisClient.on('reconnecting', () => {
+			console.log('Reconnecting to Redis...');
+		});
+
+		return redisClient;
+	}
+
+	console.log(`Using default redis`);
+	return new Redis({ db });
+};
+
+/**
+ * Wrapper around the redis client.
+ *
+ * You can hover over the underlying redis client methods for explanations of the methods, but will also include links to DOCS for some important concepts below:
+ *
+ * zRange, zRangeByScore etc.:
+ * - All of the "z" methods are methods that use sorted sets.
+ * - Sorted sets are explained here : https://redis.io/docs/data-types/sorted-sets/
+ */
+export class RedisClient {
+	public client: Redis;
+
+	connectionPromise: Promise<void>;
+
+	constructor(
+		host?: string,
+		port?: string,
+		password?: string,
+		db?: number,
+		opts?: RedisOptions
+	) {
+		this.client = getRedisClient(host, port, password, db, opts);
+	}
+
+	/**
+	 * Should avoid using this unless necessary.
+	 * @returns
+	 */
+	public forceGetClient() {
+		return this.client;
+	}
+
+	public get connected() {
+		return this?.client?.status === 'ready';
+	}
+
+	async connect() {
+		if (this.client.status === 'ready' || this.client.status === 'connect') {
+			return;
+		}
+
+		if (this.client.status === 'connecting') {
+			await sleep(100);
+			return this.connect(); // recursive call to check again
+		}
+
+		try {
+			await this.client.connect();
+		} catch (e) {
+			console.error(e);
+		}
+	}
+
+	disconnect() {
+		this.client.disconnect();
+	}
+
+	private assertConnected() {
+		if (!this.connected) {
+			throw 'Redis client not connected';
+		}
+	}
+
+	private getPrefixForMetrics(key: string) {
+		return key.split(':')?.[0];
+	}
+}