def init_state(config):
""" Initialize a dict for storing the state of the data collector.
:param config: A config dictionary.
:type config: dict(str: *)
:return: A dict containing the initial state of the data collector.
:rtype: dict
"""
vir_connection = libvirt.openReadOnly(None)
if vir_connection is None:
message = 'Failed to open a connection to the hypervisor'
log.critical(message)
raise OSError(message)
hostname = vir_connection.getHostname()
host_cpu_mhz, host_ram = get_host_characteristics(vir_connection)
physical_cpus = common.physical_cpu_count(vir_connection)
host_cpu_usable_by_vms = float(config['host_cpu_usable_by_vms'])
db = init_db(config['sql_connection'])
db.update_host(hostname,
int(host_cpu_mhz * host_cpu_usable_by_vms),
physical_cpus,
host_ram)
return {'previous_time': 0.,
'previous_cpu_time': dict(),
'previous_cpu_mhz': dict(),
'previous_host_cpu_time_total': 0.,
'previous_host_cpu_time_busy': 0.,
'previous_overload': -1,
'vir_connection': vir_connection,
'hostname': hostname,
'host_cpu_overload_threshold':
float(config['host_cpu_overload_threshold']) * \
host_cpu_usable_by_vms,
'physical_cpus': physical_cpus,
'physical_cpu_mhz': host_cpu_mhz,
'physical_core_mhz': host_cpu_mhz / physical_cpus,
'db': db}
def init_state(config):
""" Initialize a dict for storing the state of the data collector.
:param config: A config dictionary.
:type config: dict(str: *)
:return: A dict containing the initial state of the data collector.
:rtype: dict
"""
vir_connection = libvirt.openReadOnly(None)
if vir_connection is None:
message = 'Failed to open a connection to the hypervisor'
log.critical(message)
raise OSError(message)
hostname = vir_connection.getHostname()
host_cpu_mhz, host_ram = get_host_characteristics(vir_connection)
physical_cpus = common.physical_cpu_count(vir_connection)
host_cpu_usable_by_vms = float(config['host_cpu_usable_by_vms'])
db = init_db(config['sql_connection'])
db.update_host(hostname,
int(host_cpu_mhz * host_cpu_usable_by_vms),
physical_cpus,
host_ram)
return {'previous_time': 0.,
'previous_cpu_time': dict(),
'previous_cpu_mhz': dict(),
'previous_host_cpu_time_total': 0.,
'previous_host_cpu_time_busy': 0.,
'previous_overload': -1,
'vir_connection': vir_connection,
'hostname': hostname,
'host_cpu_overload_threshold':
float(config['host_cpu_overload_threshold']) * \
host_cpu_usable_by_vms,
'physical_cpus': physical_cpus,
'physical_cpu_mhz': host_cpu_mhz,
'physical_core_mhz': host_cpu_mhz / physical_cpus,
'db': db}
def init_state(config):
""" Initialize a dict for storing the state of the data collector.
:param config: A config dictionary.
:type config: dict(str: *)
:return: A dict containing the initial state of the data collector.
:rtype: dict
"""
vir_connection = libvirt.openReadOnly(None)
if vir_connection is None:
message = "Failed to open a connection to the hypervisor"
log.critical(message)
raise OSError(message)
hostname = vir_connection.getHostname()
host_cpu_mhz, host_ram = get_host_characteristics(vir_connection)
physical_cpus = common.physical_cpu_count(vir_connection)
host_cpu_usable_by_vms = float(config["host_cpu_usable_by_vms"])
db = init_db(config["sql_connection"])
db.update_host(hostname, int(host_cpu_mhz * host_cpu_usable_by_vms), physical_cpus, host_ram)
return {
"previous_time": 0.0,
"previous_cpu_time": dict(),
"previous_cpu_mhz": dict(),
"previous_host_cpu_time_total": 0.0,
"previous_host_cpu_time_busy": 0.0,
"previous_overload": -1,
"vir_connection": vir_connection,
"hostname": hostname,
"host_cpu_overload_threshold": float(config["host_cpu_overload_threshold"]) * host_cpu_usable_by_vms,
"physical_cpus": physical_cpus,
"physical_cpu_mhz": host_cpu_mhz,
"physical_core_mhz": host_cpu_mhz / physical_cpus,
"db": db,
}
def physical_cpu_count(x=int_(min=0, max=8)):
with MockTransaction:
connection = libvirt.virConnect()
expect(connection).getInfo().and_return([0, 0, x]).once()
assert common.physical_cpu_count(connection) == x
def physical_cpu_count(x=int_(min=0, max=8)):
with MockTransaction:
connection = libvirt.virConnect()
expect(connection).getInfo().and_return([0, 0, x]).once()
assert common.physical_cpu_count(connection) == x
