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runabove.py
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runabove.py
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# 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 hashlib
import time
try:
import simplejson as json
except ImportError:
import json
from libcloud.utils.py3 import httplib
from libcloud.utils.connection import get_response_object
from libcloud.common.types import InvalidCredsError
from libcloud.common.base import ConnectionUserAndKey, JsonResponse
from libcloud.httplib_ssl import LibcloudConnection
__all__ = [
'RunAboveResponse',
'RunAboveConnection'
]
API_HOST = 'api.runabove.com'
API_ROOT = '/1.0'
LOCATIONS = {
'SBG-1': {'id': 'SBG-1', 'name': 'Strasbourg 1', 'country': 'FR'},
'BHS-1': {'id': 'BHS-1', 'name': 'Montreal 1', 'country': 'CA'}
}
DEFAULT_ACCESS_RULES = [
{'method': 'GET', 'path': '/*'},
{'method': 'POST', 'path': '/*'},
{'method': 'PUT', 'path': '/*'},
{'method': 'DELETE', 'path': '/*'},
]
class RunAboveException(Exception):
pass
class RunAboveResponse(JsonResponse):
def parse_error(self):
response = super(RunAboveResponse, self).parse_body()
if response.get('errorCode', None) == 'INVALID_SIGNATURE':
raise InvalidCredsError('Signature validation failed, probably '
'using invalid credentials')
return self.body
class RunAboveConnection(ConnectionUserAndKey):
"""
A connection to the RunAbove API
Wraps SSL connections to the RunAbove API, automagically injecting the
parameters that the API needs for each request.
"""
host = API_HOST
request_path = API_ROOT
responseCls = RunAboveResponse
timestamp = None
ua = []
LOCATIONS = LOCATIONS
_timedelta = None
allow_insecure = True
def __init__(self, user_id, *args, **kwargs):
self.consumer_key = kwargs.pop('ex_consumer_key', None)
if self.consumer_key is None:
consumer_key_json = self.request_consumer_key(user_id)
msg = ("Your consumer key isn't validated, "
"go to '%(validationUrl)s' for valid it. After instantiate "
"your driver with \"ex_consumer_key='%(consumerKey)s'\"." %
consumer_key_json)
raise RunAboveException(msg)
super(RunAboveConnection, self).__init__(user_id, *args, **kwargs)
def request_consumer_key(self, user_id):
action = self.request_path + '/auth/credential'
data = json.dumps({
'accessRules': DEFAULT_ACCESS_RULES,
'redirection': 'http://runabove.com',
})
headers = {
'Content-Type': 'application/json',
'X-Ra-Application': user_id,
}
httpcon = LibcloudConnection(self.host)
httpcon.request(method='POST', url=action, body=data, headers=headers)
response = httpcon.getresponse()
if response.status == httplib.UNAUTHORIZED:
raise InvalidCredsError()
body = response.read()
json_response = json.loads(body)
httpcon.close()
return json_response
def get_timestamp(self):
if not self._timedelta:
url = 'https://%s/%s/auth/time' % (API_HOST, API_ROOT)
response = get_response_object(url=url, method='GET', headers={})
if not response or not response.body:
raise Exception('Failed to get current time from RunAbove API')
timestamp = int(response.body)
self._timedelta = timestamp - int(time.time())
return int(time.time()) + self._timedelta
def make_signature(self, method, action, data, timestamp):
full_url = 'https://%s%s' % (API_HOST, action)
sha1 = hashlib.sha1()
base_signature = "+".join([
self.key,
self.consumer_key,
method.upper(),
full_url,
data if data else '',
str(timestamp),
])
sha1.update(base_signature.encode())
signature = '$1$' + sha1.hexdigest()
return signature
def add_default_params(self, params):
return params
def add_default_headers(self, headers):
headers.update({
'X-Ra-Application': self.user_id,
'X-Ra-Consumer': self.consumer_key,
'Content-type': 'application/json',
})
return headers
def request(self, action, params=None, data=None, headers=None,
method='GET', raw=False):
data = json.dumps(data) if data else None
timestamp = self.get_timestamp()
signature = self.make_signature(method, action, data, timestamp)
headers = headers or {}
headers.update({
'X-Ra-Timestamp': timestamp,
'X-Ra-Signature': signature
})
return super(RunAboveConnection, self)\
.request(action, params=params, data=data, headers=headers,
method=method, raw=raw)