Current File : //lib/python2.7/site-packages/salt/grains/fibre_channel.py
# -*- coding: utf-8 -*-
'''
Grains for Fibre Channel WWN's. On Windows this runs a PowerShell command that
queries WMI to get the Fibre Channel WWN's available.
.. versionadded:: 2018.3.0
To enable these grains set ``fibre_channel_grains: True``.
.. code-block:: yaml
fibre_channel_grains: True
'''
# Import Python libs
from __future__ import absolute_import, print_function, unicode_literals
import glob
import logging
# Import Salt libs
import salt.modules.cmdmod
import salt.utils.platform
import salt.utils.files
__virtualname__ = 'fibre_channel'
# Get logging started
log = logging.getLogger(__name__)
def __virtual__():
if __opts__.get('fibre_channel_grains', False) is False:
return False
else:
return __virtualname__
def _linux_wwns():
'''
Return Fibre Channel port WWNs from a Linux host.
'''
ret = []
for fc_file in glob.glob('/sys/class/fc_host/*/port_name'):
with salt.utils.files.fopen(fc_file, 'r') as _wwn:
content = _wwn.read()
for line in content.splitlines():
ret.append(line.rstrip()[2:])
return ret
def _windows_wwns():
'''
Return Fibre Channel port WWNs from a Windows host.
'''
ps_cmd = r'Get-WmiObject -ErrorAction Stop ' \
r'-class MSFC_FibrePortHBAAttributes ' \
r'-namespace "root\WMI" | ' \
r'Select -Expandproperty Attributes | ' \
r'%{($_.PortWWN | % {"{0:x2}" -f $_}) -join ""}'
ret = []
cmd_ret = salt.modules.cmdmod.powershell(ps_cmd)
for line in cmd_ret:
ret.append(line.rstrip())
return ret
def fibre_channel_wwns():
'''
Return list of fiber channel HBA WWNs
'''
grains = {'fc_wwn': False}
if salt.utils.platform.is_linux():
grains['fc_wwn'] = _linux_wwns()
elif salt.utils.platform.is_windows():
grains['fc_wwn'] = _windows_wwns()
return grains
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