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

agent/test/fixtures/pvesh/lxc.json

@@ -0,0 +1,12 @@
+[
+  {
+    "vmid": 200,
+    "name": "minecraft",
+    "status": "running",
+    "uptime": 3600,
+    "cpu": 0.15,
+    "mem": 2147483648,
+    "maxmem": 4294967296,
+    "tags": ""
+  }
+]

agent/test/fixtures/pvesh/qemu.json

@@ -0,0 +1,22 @@
+[
+  {
+    "vmid": 100,
+    "name": "nginx-proxy",
+    "status": "running",
+    "uptime": 86400,
+    "cpu": 0.05,
+    "mem": 536870912,
+    "maxmem": 2147483648,
+    "tags": "web;production"
+  },
+  {
+    "vmid": 101,
+    "name": "db-backup",
+    "status": "stopped",
+    "uptime": 0,
+    "cpu": 0,
+    "mem": 0,
+    "maxmem": 4294967296,
+    "tags": "db"
+  }
+]

agent/test/fixtures/pvesh/qemu_100_agent_interfaces.json

@@ -0,0 +1,17 @@
+{
+  "result": [
+    {
+      "name": "lo",
+      "ip-addresses": [
+        { "ip-address": "127.0.0.1", "ip-address-type": "ipv4" }
+      ]
+    },
+    {
+      "name": "eth0",
+      "ip-addresses": [
+        { "ip-address": "192.168.1.10", "ip-address-type": "ipv4" },
+        { "ip-address": "fe80::a", "ip-address-type": "ipv6" }
+      ]
+    }
+  ]
+}

agent/test/fixtures/pvesh/qemu_100_config.json

@@ -0,0 +1,8 @@
+{
+  "name": "nginx-proxy",
+  "cores": 2,
+  "memory": 2048,
+  "onboot": 1,
+  "scsi0": "local-zfs:vm-100-disk-0,size=32G",
+  "net0": "virtio=AA:BB:CC:DD:EE:FF,bridge=vmbr0"
+}

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