Source code for

# -*- coding: utf-8 -*-
# TheVirtualBrain-Framework Package. This package holds all Data Management, and 
# Web-UI helpful to run brain-simulations. To use it, you also need to download
# TheVirtualBrain-Scientific Package (for simulators). See content of the
# documentation-folder for more details. See also
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# This program is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software Foundation,
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import json
from keycloak import KeycloakOpenID

[docs]class AuthorizationManagerMeta(type): """ Metaclass used to generate the singleton instance """ _instance = None def __call__(cls, config_file=''): if cls._instance is None: cls._instance = super(AuthorizationManagerMeta, cls).__call__(config_file) return cls._instance
[docs]class AuthorizationManager(metaclass=AuthorizationManagerMeta): """ Keycloak configuration class """ def __init__(self, config_file=''): """ :param config_file: Path to the generated keycloak configuration file """ self.config_file = config_file self.realm = None self.auth_server_url = None self.client_id = None self.secret_key = None self._load_configs() self.keycloak = KeycloakOpenID(self.auth_server_url, self.realm, self.client_id, self.secret_key) def _load_configs(self): """ Read keycloak parameters from the configuration file """ if self.config_file == '': raise RuntimeError("Empty keycloak config path.") try: with open(self.config_file) as f: config = json.load(f) self.realm = config['realm'] self.auth_server_url = config['auth-server-url'] self.client_id = config['resource'] try: self.secret_key = config['credentials']['secret'] except KeyError: self.secret_key = None except OSError: raise RuntimeError("Failed to read Keycloak configuration file from {}".format(self.config_file))
[docs] @staticmethod def get_keycloak_instance(): return AuthorizationManager().keycloak