Viewing file:  DataSourceBigstep.py (1.8 KB) -rw-r--r--
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# Copyright (C) 2015-2016 Bigstep Cloud Ltd.
#
# Author: Alexandru Sirbu <alexandru.sirbu@bigstep.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
import errno
import json
from cloudinit import sources
from cloudinit import url_helper
from cloudinit import util
class DataSourceBigstep(sources.DataSource):
dsname = 'Bigstep'
def __init__(self, sys_cfg, distro, paths):
sources.DataSource.__init__(self, sys_cfg, distro, paths)
self.metadata = {}
self.vendordata_raw = ""
self.userdata_raw = ""
def _get_data(self, apply_filter=False):
url = get_url_from_file()
if url is None:
return False
response = url_helper.readurl(url)
decoded = json.loads(response.contents.decode())
self.metadata = decoded["metadata"]
self.vendordata_raw = decoded["vendordata_raw"]
self.userdata_raw = decoded["userdata_raw"]
return True
def _get_subplatform(self):
"""Return the subplatform metadata source details."""
return 'metadata (%s)' % get_url_from_file()
def get_url_from_file():
try:
content = util.load_file("/var/lib/cloud/data/seed/bigstep/url")
except IOError as e:
# If the file doesn't exist, then the server probably isn't a Bigstep
# instance; otherwise, another problem exists which needs investigation
if e.errno == errno.ENOENT:
return None
else:
raise
return content
# Used to match classes to dependencies
datasources = [
(DataSourceBigstep, (sources.DEP_FILESYSTEM, sources.DEP_NETWORK)),
]
# Return a list of data sources that match this set of dependencies
def get_datasource_list(depends):
return sources.list_from_depends(depends, datasources)
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