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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
import os
from cloudinit import sources, url_helper, util
class DataSourceBigstep(sources.DataSource):
dsname = "Bigstep"
def __init__(self, sys_cfg, distro, paths):
super().__init__(sys_cfg, distro, paths)
self.metadata = {}
self.vendordata_raw = ""
self.userdata_raw = ""
def _get_data(self, apply_filter=False) -> bool:
url = self._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) -> str:
"""Return the subplatform metadata source details."""
return f"metadata ({self._get_url_from_file()})"
def _get_url_from_file(self):
url_file = os.path.join(
self.paths.cloud_dir, "data", "seed", "bigstep", "url"
)
try:
content = util.load_text_file(url_file)
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)