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# Copyright 2015 Intel Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tools for access to OS details
"""
import os
import platform
import subprocess
import locale
from conf import settings
def get_os():
"""Get distro name.
:returns: Return distro name as a string
"""
return ' '.join(platform.dist())
def get_kernel():
"""Get kernel version.
:returns: Return kernel version as a string
"""
return platform.release()
def get_cpu():
"""Get CPU information.
:returns: Return CPU information as a string
"""
with open('/proc/cpuinfo') as file_:
for line in file_:
if not line.strip():
continue
if not line.rstrip('\n').startswith('model name'):
continue
return line.rstrip('\n').split(':')[1]
def get_nic():
"""Get NIC(s) information.
:returns: Return NIC(s) information as a string
"""
nics = []
output = subprocess.check_output('lspci', shell=True)
output = output.decode(locale.getdefaultlocale()[1])
for line in output.split('\n'):
for nic_pciid in settings.getValue('WHITELIST_NICS'):
if line.startswith(nic_pciid):
nics.append(''.join(line.split(':')[2:]).strip())
return ', '.join(nics).strip()
def get_platform():
"""Get platform information.
Currently this is the motherboard vendor, name and socket
count.
:returns: Return platform information as a string
"""
output = []
with open('/sys/class/dmi/id/board_vendor', 'r') as file_:
output.append(file_.readline().rstrip())
with open('/sys/class/dmi/id/board_name', 'r') as file_:
output.append(file_.readline().rstrip())
num_nodes = len([name for name in os.listdir(
'/sys/devices/system/node/') if name.startswith('node')])
output.append(''.join(['[', str(num_nodes), ' sockets]']))
return ' '.join(output).strip()
def get_cpu_cores():
"""Get number of CPU cores.
:returns: Return number of CPU cores
"""
cores = 0
with open('/proc/cpuinfo') as file_:
for line in file_:
if line.rstrip('\n').startswith('processor'):
cores += 1
continue
# this code must be executed by at leat one core...
if cores < 1:
cores = 1
return cores
def get_memory():
"""Get memory information.
:returns: amount of system memory as string together with unit
"""
with open('/proc/meminfo') as file_:
for line in file_:
if not line.strip():
continue
if not line.rstrip('\n').startswith('MemTotal'):
continue
return line.rstrip('\n').split(':')[1].strip()
def get_memory_bytes():
"""Get memory information in bytes
:returns: amount of system memory
"""
mem_list = get_memory().split(' ')
mem = float(mem_list[0].strip())
if mem_list.__len__() > 1:
unit = mem_list[1].strip().lower()
if unit == 'kb':
mem *= 1024
elif unit == 'mb':
mem *= 1024 ** 2
elif unit == 'gb':
mem *= 1024 ** 3
elif unit == 'tb':
mem *= 1024 ** 4
return int(mem)
def get_pids(proc_names_list):
""" Get pid(s) of process(es) with given name(s)
:returns: list with pid(s) of given processes or None if processes
with given names are not running
"""
try:
pids = subprocess.check_output(['sudo', 'LC_ALL=' + settings.getValue('DEFAULT_CMD_LOCALE'), 'pidof']
+ proc_names_list)
except subprocess.CalledProcessError:
# such process isn't running
return None
return list(map(str, map(int, pids.split())))
def get_pid(proc_name_str):
""" Get pid(s) of process with given name
:returns: list with pid(s) of given process or None if process
with given name is not running
"""
return get_pids([proc_name_str])
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