[Node Migration] Return early on banner if the customer has no deployed node actions (#41280)

GitOrigin-RevId: 8602bdf76ef05ee85518a9355007d6e72cc6b0b7

Author: jordanhunt22

npm-packages/system-udfs/convex/_system/frontend/node.ts

@@ -3,6 +3,15 @@ import { queryPrivateSystem } from "../secretSystemTables";
 export const version = queryPrivateSystem({
   args: {},
   handler: async function ({ db }) {
+    const modules = await db.query("_modules").take(1000);
+    const nodeModules = modules.filter((m) => m.environment === "node");
+
+    // We keep lambdas around even if they are not currently in use. So, we need to
+    // return early if there are no node actions currently deployed.
+    if (nodeModules.length === 0 && modules.length < 1000) {
+      return null;
+    }
+
     const version = await db
       .query("_aws_lambda_versions")
       .order("desc")

npm-packages/system-udfs/convex/schema.ts

@@ -346,6 +346,11 @@ export default defineSchema({
     deleted: v.boolean(),
     analyzeResult: v.union(analyzedModule, v.null()),
     sourcePackageId: v.string(),
+    environment: v.union(
+      v.literal("node"),
+      v.literal("isolate"),
+      v.literal("invalid"),
+    ),
   }).index("by_path", ["path"]),
   _auth: defineTable(
     v.union(