minecluster/lib/routes/system-route.js

import { Router } from "express";
import k8s from "@kubernetes/client-node";
import { WARN } from "../util/logging.js";
import kc from "../k8s/k8s-config.js";
const router = Router();

import cairoAuthMiddleware from "./middlewares/auth-middleware.js";
router.use(cairoAuthMiddleware);

const k8sApi = kc.makeApiClient(k8s.CoreV1Api);
// Get Routes
router.get("/available", (req, res) => {
  return res.json({ cpu: 8000, memory: 16000 });
  // TODO Workaround to detect available
  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;