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# Copyright 2017 Arm Limited.
#
# 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.
from oslo_serialization import jsonutils
from urllib import parse
from urllib import request
from zunclient.common import template_format
from zunclient.common import utils
from zunclient import exceptions
from zunclient.i18n import _
def get_template_contents(template_file=None, template_url=None,
files=None):
# Transform a bare file path to a file:// URL.
if template_file: # nosec
template_url = utils.normalise_file_path_to_url(template_file)
tpl = request.urlopen(template_url).read() # nosec
else:
raise exceptions.CommandErrorException(_('Need to specify exactly '
'one of %(arg1)s, %(arg2)s '
'or %(arg3)s') %
{'arg1': '--template-file',
'arg2': '--template-url'})
if not tpl:
raise exceptions.CommandErrorException(_('Could not fetch '
'template from %s') %
template_url)
try:
if isinstance(tpl, bytes):
tpl = tpl.decode('utf-8')
template = template_format.parse(tpl)
except ValueError as e:
raise exceptions.CommandErrorException(_('Error parsing template '
'%(url)s %(error)s') %
{'url': template_url,
'error': e})
return template
def is_template(file_content):
try:
if isinstance(file_content, bytes):
file_content = file_content.decode('utf-8')
template_format.parse(file_content)
except (ValueError, TypeError):
return False
return True
def get_file_contents(from_data, files, base_url=None,
ignore_if=None):
if isinstance(from_data, dict):
for key, value in from_data.items():
if ignore_if and ignore_if(key, value):
continue
if base_url and not base_url.endswith('/'):
base_url = base_url + '/'
str_url = parse.urljoin(base_url, value)
if str_url not in files:
file_content = utils.read_url_content(str_url)
if is_template(file_content):
template = get_template_contents(
template_url=str_url, files=files)[1]
file_content = jsonutils.dumps(template)
files[str_url] = file_content
# replace the data value with the normalised absolute URL
from_data[key] = str_url
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