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https://github.com/CumulusNetworks/ifupdown2.git
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fc5e1735c0
Ticket: cleanup Reviewed By: Testing Done: Tested ifupdown sanity This gets rid of some ugly previous flag handling which was passed through modules. This creates a global instance of flags that all addon modules and helper modules can use. Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
81 lines
2.4 KiB
Python
81 lines
2.4 KiB
Python
#!/usr/bin/python
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#
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# Copyright 2014 Cumulus Networks, Inc. All rights reserved.
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# Author: Roopa Prabhu, roopa@cumulusnetworks.com
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#
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# ifupdownBase --
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# base object for various ifupdown objects
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#
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import logging
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import subprocess
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import re
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import os
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import rtnetlink_api as rtnetlink_api
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import signal
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import shlex
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from iface import *
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from ifupdown.utils import utils
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import ifupdownflags as ifupdownflags
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class ifupdownBase(object):
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def __init__(self):
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modulename = self.__class__.__name__
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self.logger = logging.getLogger('ifupdown.' + modulename)
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def exec_command(self, cmd, cmdenv=None, nowait=False):
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cmd_returncode = 0
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cmdout = ''
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try:
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self.logger.info('executing ' + cmd)
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if ifupdownflags.flags.DRYRUN:
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return cmdout
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ch = subprocess.Popen(shlex.split(cmd),
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stdout=subprocess.PIPE,
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shell=False, env=cmdenv,
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stderr=subprocess.STDOUT,
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close_fds=True)
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utils.enable_subprocess_signal_forwarding(ch, signal.SIGINT)
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cmdout = ch.communicate()[0]
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cmd_returncode = ch.wait()
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except OSError, e:
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raise Exception('could not execute ' + cmd +
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'(' + str(e) + ')')
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finally:
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utils.disable_subprocess_signal_forwarding(signal.SIGINT)
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if cmd_returncode != 0:
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raise Exception('error executing cmd \'%s\'' %cmd +
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'\n(' + cmdout.strip('\n ') + ')')
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return cmdout
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def ignore_error(self, errmsg):
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if (ifupdownflags.flags.FORCE == True or re.search(r'exists', errmsg,
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re.IGNORECASE | re.MULTILINE) is not None):
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return True
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return False
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def log_warn(self, str):
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if self.ignore_error(str) == False:
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if self.logger.getEffectiveLevel() == logging.DEBUG:
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traceback.print_stack()
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self.logger.warn(str)
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pass
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def log_error(self, str):
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if self.ignore_error(str) == False:
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raise
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#raise Exception(str)
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else:
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pass
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def link_exists(self, ifacename):
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return os.path.exists('/sys/class/net/%s' %ifacename)
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def link_up(self, ifacename):
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rtnetlink_api.rtnl_api.link_set(ifacename, "up")
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def link_down(self, ifacename):
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rtnetlink_api.rtnl_api.link_set(ifacename, "down")
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