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win32.py
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win32.py
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from checks import Check
try:
import wmi
w = wmi.WMI()
except Exception:
wmi, w = None, None
# Device WMI drive types
class DriveType(object):
UNKNOWN, NOROOT, REMOVEABLE, LOCAL, NETWORK, CD, RAM = (0, 1, 2, 3, 4, 5, 6)
IGNORED = ('_total',)
B2MB = float(1048576)
KB2MB = B2KB = float(1024)
class Processes(Check):
def __init__(self, logger):
Check.__init__(self, logger)
self.gauge('system.proc.queue_length')
self.gauge('system.proc.count')
def check(self, agentConfig):
try:
os = w.Win32_PerfFormattedData_PerfOS_System()[0]
except AttributeError:
self.logger.info('Missing Win32_PerfFormattedData_PerfOS_System WMI class.' \
' No process metrics will be returned.')
return
try:
cpu = w.Win32_PerfFormattedData_PerfOS_Processor(name="_Total")[0]
except AttributeError:
self.logger.info('Missing Win32_PerfFormattedData_PerfOS_Processor WMI class.' \
' No process metrics will be returned.')
return
if os.ProcessorQueueLength is not None:
self.save_sample('system.proc.queue_length', os.ProcessorQueueLength)
if os.Processes is not None:
self.save_sample('system.proc.count', os.Processes)
return self.get_metrics()
class Memory(Check):
def __init__(self, logger):
Check.__init__(self, logger)
self.logger = logger
self.gauge('system.mem.free')
self.gauge('system.mem.used')
self.gauge('system.mem.total')
self.gauge('system.mem.cached')
self.gauge('system.mem.committed')
self.gauge('system.mem.paged')
self.gauge('system.mem.nonpaged')
def check(self, agentConfig):
try:
os = w.Win32_OperatingSystem()[0]
except AttributeError:
self.logger.info('Missing Win32_OperatingSystem. No memory metrics will be returned.')
return
if os.TotalVisibleMemorySize is not None and os.FreePhysicalMemory is not None:
total = int(os.TotalVisibleMemorySize) / KB2MB
free = int(os.FreePhysicalMemory) / KB2MB
self.save_sample('system.mem.total', total)
self.save_sample('system.mem.free', free)
self.save_sample('system.mem.used', total - free)
mem = w.Win32_PerfFormattedData_PerfOS_Memory()[0]
if mem.CacheBytes is not None:
self.save_sample('system.mem.cached', int(mem.CacheBytes) / B2MB)
if mem.CommittedBytes is not None:
self.save_sample('system.mem.committed', int(mem.CommittedBytes) / B2MB)
if mem.PoolPagedBytes is not None:
self.save_sample('system.mem.paged', int(mem.PoolPagedBytes) / B2MB)
if mem.PoolNonpagedBytes is not None:
self.save_sample('system.mem.nonpaged', int(mem.PoolNonpagedBytes) / B2MB)
return self.get_metrics()
class Cpu(Check):
def __init__(self, logger):
Check.__init__(self, logger)
self.logger = logger
self.gauge('system.cpu.user')
self.gauge('system.cpu.idle')
self.gauge('system.cpu.interrupt')
self.gauge('system.cpu.system')
def check(self, agentConfig):
try:
cpu = w.Win32_PerfFormattedData_PerfOS_Processor()
except AttributeError:
self.logger.info('Missing Win32_PerfFormattedData_PerfOS_Processor WMI class.' \
' No CPU metrics will be returned.')
return
cpu_user = self._average_metric(cpu, 'PercentUserTime')
if cpu_user:
self.save_sample('system.cpu.user', cpu_user)
cpu_idle = self._average_metric(cpu, 'PercentIdleTime')
if cpu_idle:
self.save_sample('system.cpu.idle', cpu_idle)
cpu_interrupt = self._average_metric(cpu, 'PercentInterruptTime')
if cpu_interrupt is not None:
self.save_sample('system.cpu.interrupt', cpu_interrupt)
cpu_privileged = self._average_metric(cpu, 'PercentPrivilegedTime')
if cpu_privileged is not None:
self.save_sample('system.cpu.system', cpu_privileged)
return self.get_metrics()
def _average_metric(self, wmi_class, wmi_prop):
''' Sum all of the values of a metric from a WMI class object, excluding
the value for "_Total"
'''
val = 0
counter = 0
for wmi_object in wmi_class:
if wmi_object.Name == '_Total':
# Skip the _Total value
continue
if getattr(wmi_object, wmi_prop) is not None:
counter += 1
val += float(getattr(wmi_object, wmi_prop))
if counter > 0:
return val / counter
return val
class Network(Check):
def __init__(self, logger):
Check.__init__(self, logger)
self.logger = logger
self.gauge('system.net.bytes_rcvd')
self.gauge('system.net.bytes_sent')
def check(self, agentConfig):
try:
net = w.Win32_PerfFormattedData_Tcpip_NetworkInterface()
except AttributeError:
self.logger.info('Missing Win32_PerfFormattedData_Tcpip_NetworkInterface WMI class.' \
' No network metrics will be returned')
return
for iface in net:
name = self.normalize_device_name(iface.name)
if iface.BytesReceivedPerSec is not None:
self.save_sample('system.net.bytes_rcvd', iface.BytesReceivedPerSec,
device_name=name)
if iface.BytesSentPerSec is not None:
self.save_sample('system.net.bytes_sent', iface.BytesSentPerSec,
device_name=name)
return self.get_metrics()
class Disk(Check):
def __init__(self, logger):
Check.__init__(self, logger)
self.logger = logger
self.gauge('system.disk.free')
self.gauge('system.disk.total')
self.gauge('system.disk.in_use')
self.gauge('system.disk.used')
def check(self, agentConfig):
try:
disk = w.Win32_LogicalDisk()
except AttributeError:
self.logger.info('Missing Win32_LogicalDisk WMI class.' \
' No disk metrics will be returned.')
return
for device in disk:
name = self.normalize_device_name(device.name)
if device.DriveType in (DriveType.CD, DriveType.UNKNOWN) or name in IGNORED:
continue
if device.FreeSpace is not None and device.Size is not None:
free = float(device.FreeSpace) / B2KB
total = float(device.Size) / B2KB
used = total - free
self.save_sample('system.disk.free', free, device_name=name)
self.save_sample('system.disk.total', total, device_name=name)
self.save_sample('system.disk.used', used, device_name=name)
self.save_sample('system.disk.in_use', (used / total),
device_name=name)
return self.get_metrics()
class IO(Check):
def __init__(self, logger):
Check.__init__(self, logger)
self.logger = logger
self.gauge('system.io.wkb_s')
self.gauge('system.io.w_s')
self.gauge('system.io.rkb_s')
self.gauge('system.io.r_s')
self.gauge('system.io.avg_q_sz')
def check(self, agentConfig):
try:
disk = w.Win32_PerfFormattedData_PerfDisk_LogicalDisk()
except AttributeError:
self.logger.info('Missing Win32_PerfFormattedData_PerfDisk_LogicalDiskUnable WMI class.' \
' No I/O metrics will be returned.')
return
for device in disk:
name = self.normalize_device_name(device.name)
if name in IGNORED:
continue
if device.DiskWriteBytesPerSec is not None:
self.save_sample('system.io.wkb_s', int(device.DiskWriteBytesPerSec) / B2KB,
device_name=name)
if device.DiskWritesPerSec is not None:
self.save_sample('system.io.w_s', int(device.DiskWritesPerSec),
device_name=name)
if device.DiskReadBytesPerSec is not None:
self.save_sample('system.io.rkb_s', int(device.DiskReadBytesPerSec) / B2KB,
device_name=name)
if device.DiskReadsPerSec is not None:
self.save_sample('system.io.r_s', int(device.DiskReadsPerSec),
device_name=name)
if device.CurrentDiskQueueLength is not None:
self.save_sample('system.io.avg_q_sz', device.CurrentDiskQueueLength,
device_name=name)
return self.get_metrics()