Source code for libcloud.common.gig_g8

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from libcloud.common.base import ConnectionKey, JsonResponse
import json
import base64
import requests
import os
import time

# normally we only use but you might want to work
# against for some testing
IYO_URL = os.environ.get("IYO_URL", "")

[docs]class G8Connection(ConnectionKey): """ Connection class for G8 """ responseCls = JsonResponse
[docs] def add_default_headers(self, headers): """ Add headers that are necessary for every request """ self.driver.key = maybe_update_jwt(self.driver.key) headers['Authorization'] = "bearer {}".format(self.driver.key) headers['Content-Type'] = 'application/json' return headers
[docs]def base64url_decode(input): """ Helper method to base64url_decode a string. :param input: Input to decode :type input: str :rtype: str """ rem = len(input) % 4 if rem > 0: input += b'=' * (4 - rem) return base64.urlsafe_b64decode(input)
[docs]def is_jwt_expired(jwt): """ Check if jwt is expired :param jwt: jwt token to validate expiration :type jwt: str :rtype: bool """ jwt = jwt.encode('utf-8') signing_input, _ = jwt.rsplit(b'.', 1) _, claims_segment = signing_input.split(b'.', 1) claimsdata = base64url_decode(claims_segment) if isinstance(claimsdata, bytes): claimsdata = claimsdata.decode('utf-8') data = json.loads(claimsdata) # check if it's about to expire in the next minute return data['exp'] < time.time() + 60
[docs]def maybe_update_jwt(jwt): """ Update jwt if it is expired :param jwt: jwt token to validate expiration :type jwt: str :rtype: str """ if is_jwt_expired(jwt): return refresh_jwt(jwt) return jwt
[docs]def refresh_jwt(jwt): """ Refresh jwt :param jwt: jwt token to refresh :type jwt: str :rtype: str """ url = IYO_URL + "/v1/oauth/jwt/refresh" headers = {"Authorization": "bearer {}".format(jwt)} response = requests.get(url, headers=headers) response.raise_for_status() return response.text