def GetAllInstancesInfo(self, hvparams=None):
"""Get properties of all instances.
@type hvparams: dict of strings
@param hvparams: hypervisor parameter
@return: list of tuples (name, id, memory, vcpus, stat, times)
"""
data = []
for file_name in os.listdir(self._ROOT_DIR):
try:
fh = open(utils.PathJoin(self._ROOT_DIR, file_name), "r")
inst_id = "-1"
memory = 0
vcpus = 1
stat = hv_base.HvInstanceState.SHUTDOWN
times = -1
try:
inst_id = fh.readline().strip()
memory = utils.TryConvert(int, fh.readline().strip())
vcpus = utils.TryConvert(int, fh.readline().strip())
stat = hv_base.HvInstanceState.RUNNING
times = 0
finally:
fh.close()
data.append((file_name, inst_id, memory, vcpus, stat, times))
except IOError, err:
raise errors.HypervisorError("Failed to list instances: %s" %
err)
def GetInstanceInfo(self, instance_name, hvparams=None):
"""Get instance properties.
@type instance_name: string
@param instance_name: the instance name
@type hvparams: dict of strings
@param hvparams: hvparams to be used with this instance
@return: tuple of (name, id, memory, vcpus, stat, times)
"""
file_name = self._InstanceFile(instance_name)
if not os.path.exists(file_name):
return None
try:
fh = open(file_name, "r")
try:
inst_id = fh.readline().strip()
memory = utils.TryConvert(int, fh.readline().strip())
vcpus = utils.TryConvert(int, fh.readline().strip())
stat = hv_base.HvInstanceState.RUNNING
times = 0
return (instance_name, inst_id, memory, vcpus, stat, times)
finally:
fh.close()
except IOError, err:
raise errors.HypervisorError("Failed to list instance %s: %s" %
(instance_name, err))
def test(self):
for src, fn, result in [
("1", int, 1),
("a", int, "a"),
("", bool, False),
("a", bool, True),
]:
self.assertEqual(utils.TryConvert(fn, src), result)