ckanext-privatedatasets/ckanext/privatedatasets/parsers/fiware.py

65 lines
2.5 KiB
Python

# -*- coding: utf-8 -*-
# Copyright (c) 2014 CoNWeT Lab., Universidad Politécnica de Madrid
# This file is part of CKAN Private Dataset Extension.
# CKAN Private Dataset Extension is free software: you can redistribute it and/or
# modify it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# CKAN Private Dataset Extension is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with CKAN Private Dataset Extension. If not, see <http://www.gnu.org/licenses/>.
import ckan.plugins.toolkit as tk
import re
from urlparse import urlparse
from ckan.common import request
class FiWareNotificationParser(object):
def parse_notification(self, request_data):
my_host = request.host
fields = ['customer_name', 'resources']
for field in fields:
if not field in request_data:
raise tk.ValidationError({'message': '%s not found in the request' % field})
# Parse the body
resources = request_data['resources']
user_name = request_data['customer_name']
datasets = []
if not isinstance(user_name, basestring):
raise tk.ValidationError({'message': 'Invalid customer_name format'})
if not isinstance(resources, list):
raise tk.ValidationError({'message': 'Invalid resources format'})
for resource in resources:
if isinstance(resource, dict) and 'url' in resource:
parsed_url = urlparse(resource['url'])
dataset_name = re.findall('^/dataset/([^/]+).*$', parsed_url.path)
if len(dataset_name) == 1:
if parsed_url.netloc == my_host:
datasets.append(dataset_name[0])
else:
raise tk.ValidationError({'message': 'Dataset %s is associated with the CKAN instance located at %s'
% (dataset_name[0], parsed_url.netloc)})
else:
raise tk.ValidationError({'message': 'Invalid resource format'})
return {'users_datasets': [{'user': user_name, 'datasets': datasets}]}