class EventManager:
""" EventManager class """
tbd = None
def __init__(self, tbd):
VirtController.event_register()
self._stop = threading.Event()
self._thread = threading.Thread(target=self.run_event_loop,
name="libvirtEventLoop")
self._thread.setDaemon(True)
self._thread.start()
self._ctl = VirtController(read_only=True)
self._ctl.domain_event_register(EventManager.manage_event)
self._ctl.setKeepAlive(5, 3)
EventManager.tbd = tbd
logging.debug("initialized event manager")
def terminate(self):
logging.debug("terminating event manager thread")
self._stop.set()
def run_event_loop(self):
""" run_event_loop: Starts libvirt event loop """
# In race conditions on python interpreter exit, libvirt sometimes
# becomes None. So loop conditioner tests if it is still defined in
# order to avoid errors.
while not self._stop.is_set():
VirtController.event_run()
@staticmethod
def manage_event(conn, dom, event_type, event_detail, opaque):
""" manage_event: handler launched by libvirt in case of event """
event = DomainEvent(event_type, event_detail)
logging.debug("event on domain {domain_name}({domain_id}) " \
"{event_type} {event_detail}" \
.format(domain_name=dom.name(),
domain_id=dom.ID(),
event_type=event.type,
event_detail=event.detail))
domain = EventManager.tbd.get_domain_by_libvirt_name(dom.name())
# test if notified event comes from a domain in current testbed
if domain is None:
logging.debug("event received for domain {domain} but not found " \
"in testbed".format(domain=dom.name()))
else:
domain.notify_event(event)
class TestVirtControllerMethods(CloubedTestCase):
def setUp(self):
patcher_open = mock.patch('libvirt.open', libvirt_mod_m.open)
patcher_conn = mock.patch('libvirt.virConnect', libvirt_conn_m)
patcher_open.start()
patcher_conn.start()
self.addCleanup(patcher_open.stop)
self.addCleanup(patcher_conn.stop)
self.ctl = VirtController()
self.tbd = FakeCloubed(self.ctl)
self._loader = MockConfigurationLoader(conf_minimal)
self.conf = Configuration(self._loader)
def test_find_storage_pool(self):
"""Checks that VirtController.find_storage_pool() finds the storage pool
if existing else None
"""
# self.ctl.conn is a MockLibvirtConnect
self.ctl.conn.pools = []
self.ctl.conn.defined_pools = []
self.assertIs(self.ctl.find_storage_pool('fail'), None)
self.ctl.conn.pools = [ MockLibvirtStoragePool('test1'), ]
self.ctl.conn.defined_pools = [ MockLibvirtStoragePool('test2'), ]
self.assertIsNot(self.ctl.find_storage_pool('test2'), None)
def test_create_storage_pool(self):
"""Checks that VirtController.create_storage_pool() does not raise any
issue
"""
xml = "<pool type='dir'><name>pool_name</name>" \
"<target><path>/test_pool_path</path></target></pool>"
self.ctl.create_storage_pool(xml)
def test_find_storage_volume(self):
"""Checks that VirtController.find_storage_volume() finds the storage
volume in the storage pool if existing else None
"""
pool_item = { 'name': 'test_name',
'path': '/test_path' }
pool_conf = ConfigurationStoragePool(self.conf, pool_item)
storage_pool = StoragePool(self.tbd, pool_conf)
self.assertIs(self.ctl.find_storage_volume(storage_pool,'fail'), None)
pool = MockLibvirtStoragePool('/test_path')
pool.volumes.append('volume1')
self.ctl.conn.pools = [ pool, ]
self.assertEquals(self.ctl.find_storage_volume(storage_pool,'volume1'), 'volume1')
def test_create_storage_volume(self):
"""Checks that VirtController.create_storage_volume() does not raise
any issue unless the storage pool does not exist and
CloubedControllerException is raised
"""
pool_item = { 'name': 'test_name',
'path': '/test_path' }
pool_conf = ConfigurationStoragePool(self.conf, pool_item)
pool1 = StoragePool(self.tbd, pool_conf)
xml = object()
pool = MockLibvirtStoragePool('/test_path')
self.ctl.conn.pools = [ pool, ]
self.ctl.create_storage_volume(pool1, xml)
pool_item = { 'name': 'test_name',
'path': '/test_path2' }
pool_conf = ConfigurationStoragePool(self.conf, pool_item)
pool2 = StoragePool(self.tbd, pool_conf)
self.assertRaisesRegexp(CloubedControllerException,
"pool /test_path2 not found by virtualization controller",
self.ctl.create_storage_volume,
pool2,
'volume1')
def test_find_network(self):
"""Checks that VirtController.find_network() finds the network if
existing else None
"""
self.ctl.conn.networks = []
self.ctl.conn.defined_networks = []
self.assertIs(self.ctl.find_network('fail'), None)
self.ctl.conn.networks = [ MockLibvirtNetwork('net1'), ]
self.ctl.conn.defined_networks = [ MockLibvirtNetwork('net2'), ]
self.assertIsNot(self.ctl.find_network('net1'), None)
self.assertIsNot(self.ctl.find_network('net2'), None)
def test_create_network(self):
"""Checks that VirtController.create_network() does not raise any
issue
"""
xml = "<network><name>network_name</name></network>"
self.ctl.create_network(xml)
def test_find_domain(self):
"""Checks that VirtController.find_domain() finds the domain if existing
else None
"""
self.ctl.conn.domains = []
self.ctl.conn.defined_domains = []
self.assertIs(self.ctl.find_domain('fail'), None)
self.ctl.conn.domains = [ MockLibvirtDomain(0, 'domain1'), ]
self.ctl.conn.defined_domains = [ MockLibvirtDomain(1, 'domain2'), ]
self.assertIsNot(self.ctl.find_domain('domain1'), None)
self.assertIsNot(self.ctl.find_domain('domain2'), None)
self.assertIs(self.ctl.find_domain('domain3'), None)
def test_create_domain(self):
"""Checks that VirtController.create_domain() does not raise any
issue
"""
xml = "<domain><name>domain_name</name></domain>"
self.ctl.create_domain(xml)
def test_setKeepAlive(self):
"""Checks that VirtController.setKeepAlive() does not raise any issue"""
self.ctl.setKeepAlive(0, 1)
def test_domain_event_register(self):
"""Checks that VirtController.domain_event_register() does not raise any
issue
"""
def handler():
pass
self.ctl.domain_event_register(handler)