Move gc to it’s own admin endpoint

Author: ericallam

apps/webapp/app/routes/admin.api.v1.gc.ts

@@ -0,0 +1,52 @@
+import { type DataFunctionArgs } from "@remix-run/node";
+import { PerformanceObserver } from "node:perf_hooks";
+import { runInNewContext } from "node:vm";
+import v8 from "v8";
+import { requireUser } from "~/services/session.server";
+
+async function waitTillGcFinishes() {
+  let resolver: (value: PerformanceEntry) => void;
+  let rejector: (reason?: any) => void;
+
+  const promise = new Promise<PerformanceEntry>((resolve, reject) => {
+    resolver = resolve;
+    rejector = reject;
+  });
+
+  const obs = new PerformanceObserver((list) => {
+    const entry = list.getEntries()[0];
+
+    if (entry.name === "gc") {
+      resolver(entry);
+    }
+  });
+
+  obs.observe({ entryTypes: ["gc"] });
+
+  v8.setFlagsFromString("--expose-gc");
+  const gc = global.gc ?? runInNewContext("gc");
+
+  gc();
+
+  // disable expose-gc
+  v8.setFlagsFromString("--noexpose-gc");
+
+  return promise;
+}
+
+export async function loader({ request }: DataFunctionArgs) {
+  const user = await requireUser(request);
+
+  if (!user.admin) {
+    throw new Response("You must be an admin to perform this action", { status: 403 });
+  }
+
+  const entry = await waitTillGcFinishes();
+
+  return new Response(JSON.stringify(entry), {
+    status: 200,
+    headers: {
+      "Content-Type": "application/json",
+    },
+  });
+}

apps/webapp/app/routes/admin.api.v1.snapshot.ts

@@ -1,13 +1,10 @@
-import path from "path";
-import os from "os";
+import { type DataFunctionArgs } from "@remix-run/node";
 import fs from "fs";
-import v8 from "v8";
+import os from "os";
+import path from "path";
 import { PassThrough } from "stream";
-import { json, type DataFunctionArgs } from "@remix-run/node";
-import { prisma } from "~/db.server";
-import { authenticateApiRequest } from "~/services/apiAuth.server";
+import v8 from "v8";
 import { requireUser } from "~/services/session.server";
-import { runInNewContext } from "node:vm";
 
 // Format date as yyyy-MM-dd HH_mm_ss_SSS
 function formatDate(date: Date) {
@@ -33,14 +30,6 @@ export async function loader({ request }: DataFunctionArgs) {
     throw new Response("You must be an admin to perform this action", { status: 403 });
   }
 
-  v8.setFlagsFromString("--expose-gc");
-  const gc = global.gc ?? runInNewContext("gc");
-
-  gc();
-
-  // disable expose-gc
-  v8.setFlagsFromString("--noexpose-gc");
-
   const tempDir = os.tmpdir();
   const filepath = path.join(
     tempDir,