(feature) Update UI & Resource Availability

lib/routes/server-route.js

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+import { Router, json as jsonMiddleware } from "express";
+import {
+  startServer,
+  stopServer,
+  serverList,
+  getServers,
+} from "../k8s/server-control.js";
+import createServer from "../k8s/server-create.js";
+import deleteServer from "../k8s/server-delete.js";
+const router = Router();
+router.use(jsonMiddleware());
+// Routes
+router.post("/create", createServer);
+router.delete("/delete", deleteServer);
+router.post("/start", startServer);
+router.post("/stop", stopServer);
+router.get("/list", serverList);
+router.get("/instances", getServers);
+export default router;

lib/routes/system-route.js

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+import { Router } from "express";
+import k8s from "@kubernetes/client-node";
+import { WARN } from "../util/logging.js";
+const router = Router();
+const kc = new k8s.KubeConfig();
+kc.loadFromDefault();
+const k8sApi = kc.makeApiClient(k8s.CoreV1Api);
+// Get Routes
+router.get("/available", (req, res) => {
+  k8sApi.listNode().then((nodeRes) => {
+    const nodeAllocatable = nodeRes.body.items.map((i) => i.status.allocatable);
+    const nodeResources = nodeAllocatable.map(({ cpu, memory }) => ({
+      cpu,
+      memory,
+    }));
+    const { cpu: clusterCpu, memory: clusterMemory } = nodeResources[0];
+    const isIdentical = ({ cpu, memory }) =>
+      clusterMemory === memory && clusterCpu === cpu;
+    if (!nodeResources.every(isIdentical))
+      WARN("ROUTES", "Warning, node resources were non-consistent");
+    const availableCpu = parseInt(clusterCpu) * 1000;
+    const availableMemory = parseInt(clusterMemory) / 1024;
+    res.json({ cpu: availableCpu, memory: availableMemory });
+  });
+});
+
+export default router;

lib/routes/vitals-route.js

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+import { Router } from "express";
+const router = Router();
+// Get Routes
+router.get("/healthz", (req, res) => res.sendStatus(200));
+
+export default router;