Add Health and Spend for Admins

src/app/api/admin/health/route.ts

@@ -0,0 +1,92 @@
+import { NextResponse } from "next/server";
+import { requirePlatformRole } from "@/lib/session";
+import { listTenants } from "@/lib/k8s";
+import {
+  getLitellmHealth,
+  getGlobalSpend,
+  getPerTeamSpend,
+} from "@/lib/litellm";
+
+const VLLM_URL =
+  process.env.VLLM_HEALTH_URL ?? "http://vllm-inference.inference.svc:8000";
+
+async function checkVllmHealth(): Promise<{
+  healthy: boolean;
+  details?: any;
+}> {
+  try {
+    const res = await fetch(`${VLLM_URL}/health`, {
+      signal: AbortSignal.timeout(5000),
+    });
+    if (res.ok) return { healthy: true };
+    return { healthy: false, details: `HTTP ${res.status}` };
+  } catch (e: any) {
+    return { healthy: false, details: e.message };
+  }
+}
+
+/**
+ * GET /api/admin/health
+ * Returns system health overview for the admin panel.
+ */
+export async function GET() {
+  try {
+    await requirePlatformRole();
+  } catch {
+    return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+  }
+
+  const [tenants, litellm, vllm, globalSpend, perTeamSpend] =
+    await Promise.allSettled([
+      listTenants(),
+      getLitellmHealth(),
+      checkVllmHealth(),
+      getGlobalSpend(),
+      getPerTeamSpend(),
+    ]);
+
+  const allTenants =
+    tenants.status === "fulfilled" ? tenants.value : [];
+
+  // Count tenants by phase
+  const phaseCounts: Record<string, number> = {};
+  for (const t of allTenants) {
+    const phase = t.spec.suspend
+      ? "Suspended"
+      : t.status?.phase ?? "Pending";
+    phaseCounts[phase] = (phaseCounts[phase] || 0) + 1;
+  }
+
+  // Build per-tenant spend map (tenantName → spend)
+  const spendMap: Record<string, number> = {};
+  const teamSpend =
+    perTeamSpend.status === "fulfilled" ? perTeamSpend.value : new Map();
+  for (const t of allTenants) {
+    const teamId = t.status?.litellmTeamId;
+    if (teamId && teamSpend.has(teamId)) {
+      spendMap[t.metadata.name] = teamSpend.get(teamId)!;
+    }
+  }
+
+  return NextResponse.json({
+    tenants: {
+      total: allTenants.length,
+      phases: phaseCounts,
+    },
+    spend: {
+      global:
+        globalSpend.status === "fulfilled" ? globalSpend.value : 0,
+      perTenant: spendMap,
+    },
+    services: {
+      litellm:
+        litellm.status === "fulfilled"
+          ? litellm.value
+          : { healthy: false, details: "fetch failed" },
+      vllm:
+        vllm.status === "fulfilled"
+          ? vllm.value
+          : { healthy: false, details: "fetch failed" },
+    },
+  });
+}