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#!/usr/bin/python
#
# Copyright (C) 2014 Codethink Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import cliapp
import overseerlib
class RamFreePlugin(cliapp.Plugin):
def enable(self):
self.app.add_subcommand('ramfree', self.ramfree,
arg_synopsis='THRESHOLD')
def disable(self):
pass
def ramfree(self, args):
if len(args) < 1:
raise cliapp.AppException('ramfree requires a threshold to be '
'specified')
threshold = args[0]
threshold_type = args[1] if len(args) == 2 else 'high'
if threshold.isdigit() == False:
threshold = overseerlib.app.human_to_bytes(threshold)
with open('/proc/meminfo') as f:
for line in f:
if line.startswith('MemFree'):
free = line.split()[1]
free = int(free) * 1024
message = ''
if free >= threshold:
message+=('%s bytes of memory free\n' % free)
if message != '':
print message
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