def _do_request(self, uri, method, body=None, query=None, headers=None):
""" Wrapper for api_lib.do_request that includes auth logic.
"""
if headers == None:
headers = {}
self.auth.set_header_token(headers)
try:
return api_lib.do_request(uri, method, body=body, query=query, headers=headers)
except exc.HTTPUnauthorized:
# Try one more time after logging in
self.auth.set_header_token(headers, force=True)
return api_lib.do_request(uri, method, body=body, query=query, headers=headers)
def login(self):
"""Login a user
Make sure only one thread tries to login. The other threads would
block until the first thread succeeds in setting the global _token
variable.
"""
global _sem
global _token
if _sem.acquire(blocking=False):
try:
auth = base64.encodestring(self.username + ":" + self.password)
headers = {"Authorization": "Basic " + auth}
if self.project_id != None:
headers["X-Auth-Project"] = self.project_id
resp, _body = api_lib.do_request(self.uri, "POST", body={}, headers=headers)
set_cookie = resp["set-cookie"]
session, sep, exp = set_cookie.partition(";")
session_key, sep, _token = session.partition("=")
finally:
_sem.release()
else:
LOG.debug("Waiting for token to get reset")
# Wait for another thread to set the token and release
_sem.acquire(blocking=True)
_sem.release()