def sign()

in git_remote_codecommit/__init__.py [0:0]

• 8 lines of code
• 1 McCabe index (conditional complexity)

def sign(hostname, path, region, credentials):
  """
  Provides a SigV4 signature for a CodeCommit url.

  :param str hostname: aws hostname request is for
  :param str path: resource the request is for
  :param str region: region the repository resides within
  :param botocore.credentials credentials: session credentials

  :return: signature for the url
  """

  request = botocore.awsrequest.AWSRequest(method = 'GIT', url = 'https://{}{}'.format(hostname, path))
  request.context['timestamp'] = datetime.datetime.utcnow().strftime('%Y%m%dT%H%M%S')

  signer = botocore.auth.SigV4Auth(credentials, 'codecommit', region)
  canonical_request = 'GIT\n{}\n\nhost:{}\n\nhost\n'.format(path, hostname)
  string_to_sign = signer.string_to_sign(request, canonical_request)
  signature = signer.signature(string_to_sign, request)
  return "{}Z{}".format(request.context['timestamp'], signature)