Files
napalm-proxmox/tests/test_vm_contract.py
Christian Manivong dd48d3c1e5 feat: implement the HypervisorDriver VM contract
start_vm, stop_vm, reboot_vm, suspend_vm and get_vm_config existed only
as declarations. netOrk called Proxmox's own power_vm and read a VM's
raw config through _node_api(), so no other hypervisor could serve the
same endpoints. These let netOrk talk to every hypervisor alike.

The power methods accept a VM's name or vmid, wait for the Proxmox task,
and raise ValueError/RuntimeError as the contract says instead of
returning a result dict. A forced reboot of a container is stop + start,
since LXC has no reset; suspending a container is refused. power_vm is
unchanged for existing callers.

get_vm_config moves the config parsing netOrk did in
_parse_proxmox_hw_config into the driver and returns a VMConfigDict:
disks with storage and size, NICs with model, MAC, bridge and VLAN, CPU
topology, firmware, machine type and PCI/USB passthrough.

get_vms reports vmid as a string ("100"), following
napalm-device-types 2.0, still ordered numerically.
2026-09-24 09:06:59 +02:00

240 lines
8.3 KiB
Python

"""HypervisorDriver contract methods: VM lookup, power actions, get_vm_config.
netOrk used to call Proxmox's own ``power_vm`` and reach into ``_node_api()``
for a VM's hardware. Both are Proxmox-only, so a second hypervisor could not
serve the same endpoints. These pin the contract methods that replace them.
"""
from __future__ import annotations
from unittest.mock import MagicMock
import pytest
from napalm_proxmox.vm_contract_mixin import parse_vm_config
QEMU_LIST = [{"vmid": 100, "name": "web01", "status": "running"}]
LXC_LIST = [{"vmid": 200, "name": "dns01", "status": "running"}]
@pytest.fixture
def api(driver):
node = driver._node_api()
node.qemu.get.return_value = QEMU_LIST
node.lxc.get.return_value = LXC_LIST
node.qemu.return_value.status.start.post.return_value = "UPID:start"
driver._wait_for_task = MagicMock()
return node
class TestGetVmsReportsStringIds:
def test_vmid_is_a_string(self, driver, api):
driver.get_vm_interfaces = MagicMock(return_value=({}, False, False))
driver._get_vm_disk_and_boot = MagicMock(return_value=([], False))
assert [vm["vmid"] for vm in driver.get_vms()] == ["100", "200"]
def test_ordered_numerically_not_lexically(self, driver, api):
api.qemu.get.return_value = [{"vmid": 1000, "name": "a"}, {"vmid": 99, "name": "b"}]
api.lxc.get.return_value = []
driver.get_vm_interfaces = MagicMock(return_value=({}, False, False))
driver._get_vm_disk_and_boot = MagicMock(return_value=([], False))
assert [vm["vmid"] for vm in driver.get_vms()] == ["99", "1000"]
class TestResolveVm:
def test_by_vmid_string(self, driver, api):
assert driver._resolve_vm("100") == (100, "vm")
def test_by_name(self, driver, api):
assert driver._resolve_vm("dns01") == (200, "container")
def test_unknown_raises_value_error(self, driver, api):
with pytest.raises(ValueError, match="nope"):
driver._resolve_vm("nope")
class TestPowerActions:
def test_start_posts_and_waits_for_the_task(self, driver, api):
driver.start_vm("web01")
api.qemu.return_value.status.start.post.assert_called_once()
driver._wait_for_task.assert_called_once_with("UPID:start", timeout=120)
@pytest.mark.parametrize(("force", "action"), [(False, "shutdown"), (True, "stop")])
def test_stop_graceful_or_forced(self, driver, api, force, action):
driver.stop_vm("100", force=force)
getattr(api.qemu.return_value.status, action).post.assert_called_once()
@pytest.mark.parametrize(("force", "action"), [(False, "reboot"), (True, "reset")])
def test_reboot_graceful_or_forced(self, driver, api, force, action):
driver.reboot_vm("100", force=force)
getattr(api.qemu.return_value.status, action).post.assert_called_once()
def test_forced_reboot_of_a_container_is_a_stop_and_start(self, driver, api):
"""LXC has no reset; stop + start is the closest thing to pulling the plug."""
driver.reboot_vm("200", force=True)
status = api.lxc.return_value.status
status.stop.post.assert_called_once()
status.start.post.assert_called_once()
def test_suspend_vm(self, driver, api):
driver.suspend_vm("100")
api.qemu.return_value.status.suspend.post.assert_called_once()
def test_suspend_container_is_refused(self, driver, api):
with pytest.raises(RuntimeError, match="container"):
driver.suspend_vm("200")
def test_api_error_becomes_runtime_error(self, driver, api):
api.qemu.return_value.status.start.post.side_effect = Exception("locked")
with pytest.raises(RuntimeError, match="locked"):
driver.start_vm("100")
QEMU_CONFIG = {
"name": "web01",
"cores": 2,
"sockets": 2,
"memory": "8192",
"ostype": "l26",
"cpu": "host,flags=+aes",
"bios": "ovmf",
"machine": "q35",
"boot": "order=scsi0;ide2;net0",
"scsi0": "local-lvm:vm-100-disk-0,size=32G,format=raw",
"virtio1": "tank:vm-100-disk-1,size=512M",
"ide2": "local:iso/debian.iso,media=cdrom",
"efidisk0": "local-lvm:vm-100-disk-2,size=4M",
"net0": "virtio=BC:24:11:AA:BB:CC,bridge=vmbr0,tag=10,firewall=1",
"net1": "e1000=BC:24:11:AA:BB:DD,bridge=vmbr1",
"hostpci0": "0000:01:00.0,pcie=1",
"usb0": "host=1234:5678",
"description": "Production web server",
"tags": "prod;web",
}
LXC_CONFIG = {
"hostname": "dns01",
"cores": 1,
"memory": 512,
"ostype": "debian",
"rootfs": "local-lvm:vm-200-disk-0,size=8G",
"mp0": "tank:subvol-200-disk-1,mp=/data,size=1T",
"net0": "name=eth0,bridge=vmbr0,hwaddr=BC:24:11:00:00:01,ip=dhcp,tag=20,type=veth",
}
class TestParseQemuConfig:
@pytest.fixture
def cfg(self):
return parse_vm_config("100", "vm", QEMU_CONFIG)
def test_core_fields(self, cfg):
assert cfg["vmid"] == "100"
assert cfg["name"] == "web01"
assert cfg["vcpus"] == 4
assert cfg["memory"] == 8192
assert cfg["os_type"] == "l26"
assert cfg["description"] == "Production web server"
assert cfg["tags"] == ["prod", "web"]
def test_boot_order(self, cfg):
assert cfg["boot_order"] == ["scsi0", "ide2", "net0"]
def test_disks_skip_cdrom_and_normalise_size(self, cfg):
by_dev = {d["device"]: d for d in cfg["disks"]}
assert set(by_dev) == {"scsi0", "virtio1", "efidisk0"}
assert by_dev["scsi0"] == {
"device": "scsi0",
"storage": "local-lvm",
"size": 32,
"format": "raw",
"bootable": True,
}
assert by_dev["virtio1"]["size"] == 0 # 512M rounds down to 0 GB
assert by_dev["virtio1"]["bootable"] is False
def test_nics(self, cfg):
assert cfg["nics"] == [
{
"device": "net0",
"mac": "BC:24:11:AA:BB:CC",
"model": "virtio",
"bridge": "vmbr0",
"vlan_id": 10,
},
{
"device": "net1",
"mac": "BC:24:11:AA:BB:DD",
"model": "e1000",
"bridge": "vmbr1",
"vlan_id": 0,
},
]
def test_hardware_details(self, cfg):
assert cfg["cpu_type"] == "host"
assert cfg["sockets"] == 2
assert cfg["cores_per_socket"] == 2
assert cfg["firmware"] == "efi"
assert cfg["machine"] == "q35"
def test_passthrough(self, cfg):
assert cfg["passthrough"] == [
{"slot": "hostpci0", "kind": "pci", "config": "0000:01:00.0,pcie=1"},
{"slot": "usb0", "kind": "usb", "config": "host=1234:5678"},
]
def test_defaults_for_a_bare_config(self):
cfg = parse_vm_config("101", "vm", {})
assert cfg["name"] == "vm-101"
assert cfg["vcpus"] == 1
assert cfg["cpu_type"] == "kvm64"
assert cfg["firmware"] == "bios"
assert "machine" not in cfg
assert cfg["boot_order"] == []
def test_legacy_bootdisk(self):
cfg = parse_vm_config("101", "vm", {"boot": "cdn", "bootdisk": "scsi0"})
assert cfg["boot_order"] == ["scsi0"]
class TestParseLxcConfig:
@pytest.fixture
def cfg(self):
return parse_vm_config("200", "container", LXC_CONFIG)
def test_core_fields(self, cfg):
assert cfg["name"] == "dns01"
assert cfg["vcpus"] == 1
assert cfg["memory"] == 512
assert cfg["tags"] == []
def test_rootfs_and_mountpoint(self, cfg):
assert [(d["device"], d["storage"], d["size"]) for d in cfg["disks"]] == [
("rootfs", "local-lvm", 8),
("mp0", "tank", 1024),
]
def test_veth_nic(self, cfg):
assert cfg["nics"] == [
{
"device": "net0",
"mac": "BC:24:11:00:00:01",
"model": "veth",
"bridge": "vmbr0",
"vlan_id": 20,
}
]
def test_no_vm_only_hardware_fields(self, cfg):
assert "firmware" not in cfg
assert "sockets" not in cfg
class TestGetVmConfig:
def test_fetches_the_right_config(self, driver, api):
api.lxc.return_value.config.get.return_value = LXC_CONFIG
cfg = driver.get_vm_config("dns01")
assert cfg["vmid"] == "200"
assert cfg["name"] == "dns01"