fix: parse redis url to get hostname and port (#5502)

* fix: parse redis url to get hostname and port

* fix: redis url accepted for connection

* chore: add redis url to example env

* fix: let users add redis port and host incase redis url is not present

* chore: create url from host and port variables

* fix: return empty string incase of no config

live/.env.example

@@ -1,3 +1,6 @@
 API_BASE_URL="http://api:8000"
-REDIS_HOST="localhost"
-REDIS_PORT="6379"
+REDIS_URL="redis://localhost:6379"
+
+# If you prefer not to provide a Redis URL, you can set the REDIS_HOST and REDIS_PORT environment variables instead.
+REDIS_PORT=6379
+REDIS_HOST=localhost

live/src/core/config/redis-config.ts

@@ -0,0 +1,17 @@
+type RedisConfig = string | { host: string; port: number } | null;
+
+export function getRedisConfig(): RedisConfig {
+  const redisUrl = process.env.REDIS_URL?.trim();
+  const redisHost = process.env.REDIS_HOST?.trim();
+  const redisPort = process.env.REDIS_PORT?.trim();
+
+  if (redisUrl) {
+    return redisUrl;
+  }
+
+  if (redisHost && redisPort && !Number.isNaN(Number(redisPort))) {
+    return `redis://${redisHost}:${redisPort}`;
+  }
+
+  return "";
+}

live/src/server.ts

@@ -11,6 +11,8 @@ import {
   fetchPageDescriptionBinary,
   updatePageDescription,
 } from "@/core/lib/page.js";
+// config
+import { getRedisConfig } from "./core/config/redis-config.js";
 // types
 import { TDocumentTypes } from "@/core/types/common.js";
 // plane live lib
@@ -46,10 +48,8 @@ const server = Server.configure({
     }
   },
   extensions: [
-    new Redis({
-      host: process.env.REDIS_HOST || "localhost",
-      port: Number(process.env.REDIS_PORT || 6379),
-    }),
+    // @ts-expect-error - redis from hocuspocus is not typed properly
+    new Redis(getRedisConfig()),
     new Logger(),
     new Database({
       fetch: async ({