mirror of
https://github.com/retspen/webvirtcloud
synced 2026-11-08 19:26:48 +00:00
439f24041e
Measured on a VM with two disks, a CD-ROM and a NIC: 70 libvirt calls per page, now 43. Within the page's cached_reads block the VM's state, the host's info and domain capabilities, and each disk path's volume are read once; the running and the persistent disk lists share a path's volume. The ISO list takes the active pools in one call instead of looking each up by name; it still refreshes them, so an image copied in by hand shows up. The opt-in DRBD status waits at most 10 s for the compute's ssh, then leaves the status unknown instead of holding the page.
99 lines
3.4 KiB
Python
99 lines
3.4 KiB
Python
import unittest
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from unittest.mock import MagicMock
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from django.conf import settings
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if not settings.configured:
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settings.configure(MAC_OUI="52:54:10")
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from libvirt import (
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VIR_CONNECT_LIST_STORAGE_POOLS_ACTIVE,
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VIR_DOMAIN_AFFECT_CONFIG,
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VIR_DOMAIN_AFFECT_LIVE,
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libvirtError,
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)
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from lxml import etree
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from vrtManager.instance import wvmInstance
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DOMAIN = """<domain><devices>
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<disk type='file' device='cdrom'><driver name='qemu' type='raw'/><target dev='sda' bus='sata'/></disk>
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<disk type='file' device='cdrom'><driver name='qemu' type='raw'/><target dev='sdb' bus='sata'/></disk>
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</devices></domain>"""
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def vm(active):
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inst = wvmInstance.__new__(wvmInstance)
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inst.instance = MagicMock()
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inst.instance.isActive.return_value = active
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inst._XMLDesc = MagicMock(return_value=DOMAIN)
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return inst
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class IsoMediaTestCase(unittest.TestCase):
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"""Media change goes through updateDeviceFlags for the right CD-ROM."""
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def updates(self, inst):
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return [
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(etree.fromstring(c.args[0]).find("target").get("dev"), etree.fromstring(c.args[0]).xpath("string(source/@file)"), c.args[1])
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for c in inst.instance.updateDeviceFlags.call_args_list
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]
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def test_stopped_vm_changes_only_the_persistent_definition(self):
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inst = vm(active=False)
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inst._set_cdrom_media("sdb", "/iso/a.iso")
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self.assertEqual(self.updates(inst), [("sdb", "/iso/a.iso", VIR_DOMAIN_AFFECT_CONFIG)])
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def test_running_vm_changes_live_then_persistent(self):
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inst = vm(active=True)
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inst._set_cdrom_media("sdb", None)
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self.assertEqual(
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self.updates(inst), [("sdb", "", VIR_DOMAIN_AFFECT_LIVE), ("sdb", "", VIR_DOMAIN_AFFECT_CONFIG)]
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)
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def test_unknown_cdrom_changes_nothing(self):
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inst = vm(active=True)
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with self.assertRaises(libvirtError):
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inst._set_cdrom_media("sdz", "/iso/a.iso")
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inst.instance.updateDeviceFlags.assert_not_called()
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def pool(volumes, refresh_error=False, list_error=False):
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p = MagicMock()
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if refresh_error:
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p.refresh.side_effect = libvirtError("refresh failed")
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if list_error:
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p.listVolumes.side_effect = libvirtError("pool is not active")
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else:
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p.listVolumes.return_value = volumes
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return p
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class IsoListTestCase(unittest.TestCase):
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"""The CD-ROM choices are the .iso volumes of the active pools, refreshed
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so that an image copied in by hand shows up."""
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def iso(self, *pools):
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inst = wvmInstance.__new__(wvmInstance)
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inst.wvm = MagicMock()
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inst.wvm.listAllStoragePools.return_value = list(pools)
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return inst, inst.get_iso_media()
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def test_iso_volumes_of_the_active_pools(self):
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a, b = pool(["a.iso", "disk.qcow2"]), pool(["B.ISO"])
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inst, iso = self.iso(a, b)
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self.assertEqual(iso, ["a.iso", "B.ISO"])
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inst.wvm.listAllStoragePools.assert_called_once_with(VIR_CONNECT_LIST_STORAGE_POOLS_ACTIVE)
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a.refresh.assert_called_once_with(0)
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b.refresh.assert_called_once_with(0)
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def test_a_failed_refresh_still_lists_the_pool(self):
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_, iso = self.iso(pool(["a.iso"], refresh_error=True))
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self.assertEqual(iso, ["a.iso"])
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def test_a_pool_stopped_meanwhile_is_skipped(self):
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_, iso = self.iso(pool([], list_error=True), pool(["b.iso"]))
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self.assertEqual(iso, ["b.iso"])
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if __name__ == "__main__":
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unittest.main()
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