# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.
import time
import hashlib
import hmac
try:
import simplejson as json
except ImportError:
import json # NOQA
from libcloud.utils.py3 import httplib
from libcloud.utils.py3 import urlencode
from libcloud.common.base import ConnectionUserAndKey, JsonResponse
from libcloud.common.types import InvalidCredsError, LibcloudError
from libcloud.storage.base import Container, StorageDriver
[docs]class NimbusResponse(JsonResponse):
valid_response_codes = [httplib.OK, httplib.NOT_FOUND, httplib.CONFLICT,
httplib.BAD_REQUEST]
[docs] def success(self):
return self.status in self.valid_response_codes
[docs] def parse_error(self):
if self.status in [httplib.UNAUTHORIZED]:
raise InvalidCredsError(self.body)
raise LibcloudError('Unknown error. Status code: %d' % (self.status),
driver=self.connection.driver)
[docs]class NimbusConnection(ConnectionUserAndKey):
host = 'nimbus.io'
responseCls = NimbusResponse
def __init__(self, *args, **kwargs):
self.id = kwargs.pop('id')
super(NimbusConnection, self).__init__(*args, **kwargs)
[docs] def pre_connect_hook(self, params, headers):
timestamp = str(int(time.time()))
signature = self._calculate_signature(user_id=self.user_id,
method=self.method,
params=params,
path=self.action,
timestamp=timestamp,
key=self.key)
headers['X-NIMBUS-IO-Timestamp'] = timestamp
headers['Authorization'] = 'NIMBUS.IO %s:%s' % (self.id, signature)
return params, headers
def _calculate_signature(self, user_id, method, params, path, timestamp,
key):
if params:
uri_path = path + '?' + urlencode(params)
else:
uri_path = path
string_to_sign = [user_id, method, str(timestamp), uri_path]
string_to_sign = '\n'.join(string_to_sign)
hmac_value = hmac.new(key, string_to_sign, hashlib.sha256)
return hmac_value.hexdigest()
[docs]class NimbusStorageDriver(StorageDriver):
name = 'Nimbus.io'
website = 'https://nimbus.io/'
connectionCls = NimbusConnection
def __init__(self, *args, **kwargs):
self.user_id = kwargs['user_id']
super(NimbusStorageDriver, self).__init__(*args, **kwargs)
[docs] def iterate_containers(self):
response = self.connection.request('/customers/%s/collections' %
(self.user_id))
return self._to_containers(response.object)
[docs] def create_container(self, container_name):
params = {'action': 'create', 'name': container_name}
response = self.connection.request('/customers/%s/collections' %
(self.user_id),
params=params,
method='POST')
return self._to_container(response.object)
def _to_containers(self, data):
for item in data:
yield self._to_container(item)
def _to_container(self, data):
name = data[0]
extra = {'date_created': data[2]}
return Container(name=name, extra=extra, driver=self)
def _ex_connection_class_kwargs(self):
result = {'id': self.user_id}
return result