feat(agent): vms/lxc collectors for runtime and detail with fixtures

agent/test/proxmox_agent/collectors/vms_test.exs

@@ -0,0 +1,76 @@
+defmodule ProxmoxAgent.Collectors.VmsTest do
+  use ExUnit.Case, async: true
+
+  alias ProxmoxAgent.Collectors.Vms
+
+  @fixtures Path.expand("../../fixtures/pvesh", __DIR__)
+
+  defp read!(name), do: File.read!(Path.join(@fixtures, name))
+
+  defp fake_runner do
+    fn
+      "pvesh", ["get", "/nodes/" <> rest, "--output-format", "json"] ->
+        cond do
+          String.ends_with?(rest, "/qemu") ->
+            {:ok, read!("qemu.json")}
+
+          String.ends_with?(rest, "/lxc") ->
+            {:ok, read!("lxc.json")}
+
+          String.ends_with?(rest, "/qemu/100/config") ->
+            {:ok, read!("qemu_100_config.json")}
+
+          String.ends_with?(rest, "/qemu/100/agent/network-get-interfaces") ->
+            {:ok, read!("qemu_100_agent_interfaces.json")}
+
+          String.ends_with?(rest, "/qemu/101/config") ->
+            {:ok, ~s({"name":"db-backup","cores":4,"memory":4096})}
+
+          String.ends_with?(rest, "/qemu/101/agent/network-get-interfaces") ->
+            {:error, {:nonzero_exit, 1, "QEMU guest agent is not running"}}
+
+          String.ends_with?(rest, "/lxc/200/config") ->
+            {:ok,
+             ~s({"hostname":"minecraft","cores":4,"memory":4096,"net0":"name=eth0,ip=10.0.0.5/24"})}
+        end
+    end
+  end
+
+  describe "collect_runtime/1" do
+    test "returns qemu + lxc runtime info" do
+      sample = Vms.collect_runtime(node: "pve-01", runner: fake_runner())
+
+      assert length(sample.vms) == 3
+      nginx = Enum.find(sample.vms, &(&1.vmid == 100))
+      assert nginx.type == "qemu"
+      assert nginx.name == "nginx-proxy"
+      assert nginx.status == "running"
+      assert nginx.cpu_usage == 0.05
+      assert nginx.mem_bytes == 536_870_912
+      assert nginx.max_mem_bytes == 2_147_483_648
+      assert nginx.tags == ["web", "production"]
+
+      mc = Enum.find(sample.vms, &(&1.vmid == 200))
+      assert mc.type == "lxc"
+    end
+  end
+
+  describe "collect_detail/1" do
+    test "returns per-VM config + IPs" do
+      sample = Vms.collect_detail(node: "pve-01", runner: fake_runner())
+
+      nginx = Enum.find(sample.vms, &(&1.vmid == 100))
+      assert nginx.config["cores"] == 2
+      assert nginx.config["memory"] == 2048
+      assert "192.168.1.10" in nginx.ips
+
+      db = Enum.find(sample.vms, &(&1.vmid == 101))
+      assert db.config["cores"] == 4
+      assert db.ips == []
+
+      mc = Enum.find(sample.vms, &(&1.vmid == 200))
+      assert mc.config["hostname"] == "minecraft"
+      assert "10.0.0.5" in mc.ips
+    end
+  end
+end