def _fetch_metadata_from_file(self):
cnf = bus.cnf
if self._userdata is None:
path = cnf.private_path('.user-data')
if os.path.exists(path):
rawmeta = None
with open(path, 'r') as fp:
rawmeta = fp.read()
if not rawmeta:
raise platform.PlatformError("Empty user-data")
return self._parse_user_data(rawmeta)
return self._userdata
def _fetch_metadata_from_file(self):
self._logger.debug('fetching meta-data from files')
cnf = bus.cnf
if self._userdata is None:
for path in ('/etc/.scalr-user-data',
cnf.private_path('.user-data')):
if os.path.exists(path):
self._logger.debug('using file %s', path)
rawmeta = None
with open(path, 'r') as fp:
rawmeta = fp.read()
if not rawmeta:
raise platform.PlatformError("Empty user-data")
self._logger.info('Use user-data from %s', path)
return self._parse_user_data(rawmeta)
return self._userdata
def _fetch_metadata_from_file(self):
self._logger.debug('fetching meta-data from files')
if self._userdata is None:
private_dir_ud_path = os.path.join(node.__node__['private_dir'],
'.user-data')
for path in ('/etc/.scalr-user-data', private_dir_ud_path):
if os.path.exists(path):
self._logger.debug('using file %s', path)
rawmeta = None
with open(path, 'r') as fp:
rawmeta = fp.read()
if not rawmeta:
raise platform.PlatformError("Empty user-data")
self._logger.info('Use user-data from %s', path)
return self._parse_user_data(rawmeta)
return self._userdata
def _fetch_metadata(self):
"""
Fetches whole metadata dict. Unlike Ec2LikePlatform,
which fetches data for concrete key.
"""
url = self._meta_url
try:
r = urllib2.urlopen(url)
response = r.read().strip()
return json.loads(response)
except IOError, e:
urllib_error = isinstance(e, urllib2.HTTPError) or \
isinstance(e, urllib2.URLError)
if urllib_error:
metadata = self._fetch_metadata_from_file()
# TODO: move some keys from metadata to parent dict,
# that should be there when fetching from url
return {'meta': metadata}
raise platform.PlatformError("Cannot fetch %s metadata url '%s'. "
"Error: %s" % (self.name, url, e))