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# Copyright (c) 2012, Calxeda Inc.
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of Calxeda Inc. nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGE.
"""An implementation of Tool for ipmi-dcmi (module of FreeIPMI) support"""
import subprocess, sys, pexpect
from pyipmi import Tool, IpmiError, InteractiveCommand
class IpmiDcmi(Tool):
"""Implements interaction with ipmi-dcmi
Currently only supports one off commands, persistent sessions will come.
"""
def __init__(self, *args, **kwargs):
super(IpmiDcmi, self).__init__(*args, **kwargs)
self._ipmidcmi_path = self._find_ipmidcmi_path()
def _find_ipmidcmi_path(self):
"""Get the path to the ipmi-dcmi bin.
freeipmi puts all of its binaries in /usr/sbin, which lots of
things don't have in their default path. We hardcode the path to
it here, but only if it can't be found in $PATH (via bash's which)."""
try:
found = subprocess.check_output(['which', 'ipmi-dcmi']).strip()
except subprocess.CalledProcessError:
return '/usr/sbin/ipmi-dcmi'
return found
def run(self, command):
"""Run a command via ipmi-dcmi"""
ipmi_args = self._ipmi_args(command)
arg_str = 'Running %s' % ' '.join(ipmi_args)
self._log(arg_str)
print arg_str
if isinstance(command, InteractiveCommand):
command = ipmi_args[0]
args = ipmi_args[1:]
proc = self._start_command(command, args)
return proc
out, err = self._execute(command, ipmi_args)
return command.parse_results(out, err)
def _ipmi_args(self, command):
"""Return the command line arguments to ipmi-dcmi for command"""
args = [self._ipmidcmi_path]
args.extend(self._config_args)
args.extend(command.ipmidcmi_args)
return map(str, args)
@property
def _config_args(self):
"""Return the config dependent command line arguments
This arguments are generated from the BMC's config, not from
a specific command. They will be the same from command to
command.
"""
params_to_args = {
'hostname' : '-h',
'password' : '-p',
'username' : '-u',
'authtype' : '-a',
'level' : '-l'
}
base = []
bmc_params = self._handle.bmc.params
for param, val in bmc_params.iteritems():
arg = params_to_args.get(param)
if arg and val:
base.extend([arg, str(val)])
return base
def _execute(self, command, args):
"""Execute an ipmi-dcmi command"""
proc = subprocess.Popen(args,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = proc.communicate()
self._log(out)
self._log(err)
sys.stdout.write(out)
sys.stderr.write(err)
if proc.returncode != 0:
command.handle_command_error(out, err)
return out, err
def _start_command(self, command, args, timeout=5):
return pexpect.spawn(command, args, timeout=timeout,
logfile=self._handle._log_file)
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