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# Copyright 2013 Google Inc. All Rights Reserved.
#
# 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.
"""GCE Linux specific platform info."""
import csv
import os
from gcimagebundlelib import linux
class Gcel(linux.LinuxPlatform):
"""GCE Linux specific information."""
@staticmethod
def IsThisPlatform(root='/'):
release_file = root + '/etc/lsb-release'
if os.path.exists(release_file):
(flavor, _, _, _) = Gcel.ParseLsbRelease(release_file)
if flavor and flavor.lower() == 'gcel':
return True
return False
@staticmethod
def ParseLsbRelease(release_file='/etc/lsb-release'):
"""Parses the /etc/lsb-releases file.
Returns:
A 4-tuple containing id, release, codename, and description
"""
release_info = {}
for line in csv.reader(open(release_file), delimiter='='):
if len(line) > 1:
release_info[line[0]] = line[1]
return (release_info.get('DISTRIB_ID', None),
release_info.get('DISTRIB_RELEASE', None),
release_info.get('DISTRIB_CODENAME', None),
release_info.get('DISTRIB_DESCRIPTION', None))
def __init__(self):
super(Gcel, self).__init__()
(self.distribution, self.distribution_version,
self.distribution_codename, _) = Gcel.ParseLsbRelease()
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