add canvas_cache tool

packages/server/package.json

@@ -8,7 +8,8 @@
     "lint": "eslint .",
     "prisma:studio": "prisma studio",
     "prisma:migrate": "prisma migrate deploy",
-    "prisma:seed:palette": "./tool.sh seed_palette"
+    "prisma:seed:palette": "./tool.sh seed_palette",
+    "tool": "./tool.sh"
   },
   "keywords": [],
   "author": "",

packages/server/src/lib/redis.ts

@@ -51,6 +51,17 @@ class _Redis {
     this.isConnected = true;
   }
 
+  async disconnect() {
+    if (!this.isConnected) {
+      Logger.warn("Redis#disconnect called while not connected");
+      return;
+    }
+
+    await this.client.disconnect();
+    Logger.info("Disconnected from Redis");
+    this.isConnected = false;
+  }
+
   async getClient() {
     if (!this.isConnected) {
       await this.connect();

packages/server/src/tools/canvas_cache.ts

@@ -0,0 +1,14 @@
+import Canvas from "../lib/Canvas";
+import { Redis } from "../lib/redis";
+
+const log = (...data: any) => {
+  // eslint-disable-next-line no-console
+  console.log(...data);
+};
+
+(async () => {
+  log("Caching pixels from database to Redis...");
+  await Canvas.pixelsToRedis();
+  await Redis.disconnect();
+  log("Cached");
+})();