Feature7912- Enhancement of NBI API to collect VNF metrics
[osm/NBI.git] / osm_nbi / authconn_keystone.py
index 068c213..f32cfe9 100644 (file)
@@ -24,22 +24,29 @@ Openstack Keystone and leverages the RBAC model, to bring
 it for OSM.
 """
 
-__author__ = "Eduardo Sousa <esousa@whitestack.com>"
+
+__author__ = "Eduardo Sousa <esousa@whitestack.com>, " \
+             "Pedro de la Cruz Ramos <pdelacruzramos@altran.com>"
 __date__ = "$27-jul-2018 23:59:59$"
 
-from authconn import Authconn, AuthException, AuthconnOperationException
+from osm_nbi.authconn import Authconn, AuthException, AuthconnOperationException, AuthconnNotFoundException, \
+    AuthconnConflictException
 
 import logging
+import requests
+import time
 from keystoneauth1 import session
 from keystoneauth1.identity import v3
 from keystoneauth1.exceptions.base import ClientException
+from keystoneauth1.exceptions.http import Conflict
 from keystoneclient.v3 import client
 from http import HTTPStatus
+from osm_nbi.validation import is_valid_uuid
 
 
 class AuthconnKeystone(Authconn):
-    def __init__(self, config):
-        Authconn.__init__(self, config)
+    def __init__(self, config, db, token_cache):
+        Authconn.__init__(self, config, db, token_cache)
 
         self.logger = logging.getLogger("nbi.authenticator.keystone")
 
@@ -50,6 +57,19 @@ class AuthconnKeystone(Authconn):
         self.admin_password = config.get("service_password", "nbi")
         self.project_domain_name = config.get("project_domain_name", "default")
 
+        # Waiting for Keystone to be up
+        available = None
+        counter = 300
+        while available is None:
+            time.sleep(1)
+            try:
+                result = requests.get(self.auth_url)
+                available = True if result.status_code == 200 else None
+            except Exception:
+                counter -= 1
+                if counter == 0:
+                    raise AuthException("Keystone not available after 300s timeout")
+
         self.auth = v3.Password(user_domain_name=self.user_domain_name,
                                 username=self.admin_username,
                                 password=self.admin_password,
@@ -59,75 +79,120 @@ class AuthconnKeystone(Authconn):
         self.sess = session.Session(auth=self.auth)
         self.keystone = client.Client(session=self.sess)
 
-    def authenticate_with_user_password(self, user, password):
-        """
-        Authenticate a user using username and password.
-
-        :param user: username
-        :param password: password
-        :return: an unscoped token that grants access to project list
-        """
-        try:
-            user_id = list(filter(lambda x: x.name == user, self.keystone.users.list()))[0].id
-            project_names = [project.name for project in self.keystone.projects.list(user=user_id)]
-
-            token = self.keystone.get_raw_token_from_identity_service(
-                auth_url=self.auth_url,
-                username=user,
-                password=password,
-                user_domain_name=self.user_domain_name,
-                project_domain_name=self.project_domain_name)
-
-            return token["auth_token"], project_names
-        except ClientException:
-            self.logger.exception("Error during user authentication using keystone. Method: basic")
-            raise AuthException("Error during user authentication using Keystone", http_code=HTTPStatus.UNAUTHORIZED)
-
-    def authenticate_with_token(self, token, project=None):
+    def authenticate(self, user, password, project=None, token_info=None):
         """
-        Authenticate a user using a token. Can be used to revalidate the token
-        or to get a scoped token.
+        Authenticate a user using username/password or token_info, plus project
+        :param user: user: name, id or None
+        :param password: password or None
+        :param project: name, id, or None. If None first found project will be used to get an scope token
+        :param token_info: previous token_info to obtain authorization
+        :return: the scoped token info or raises an exception. The token is a dictionary with:
+            _id:  token string id,
+            username: username,
+            project_id: scoped_token project_id,
+            project_name: scoped_token project_name,
+            expires: epoch time when it expires,
 
-        :param token: a valid token.
-        :param project: (optional) project for a scoped token.
-        :return: return a revalidated token, scoped if a project was passed or
-        the previous token was already scoped.
         """
         try:
-            token_info = self.keystone.tokens.validate(token=token)
-            projects = self.keystone.projects.list(user=token_info["user"]["id"])
-            project_names = [project.name for project in projects]
-
-            token = self.keystone.get_raw_token_from_identity_service(
+            username = None
+            user_id = None
+            project_id = None
+            project_name = None
+
+            if user:
+                if is_valid_uuid(user):
+                    user_id = user
+                else:
+                    username = user
+
+                # get an unscoped token firstly
+                unscoped_token = self.keystone.get_raw_token_from_identity_service(
+                    auth_url=self.auth_url,
+                    user_id=user_id,
+                    username=username,
+                    password=password,
+                    user_domain_name=self.user_domain_name,
+                    project_domain_name=self.project_domain_name)
+            elif token_info:
+                unscoped_token = self.keystone.tokens.validate(token=token_info.get("_id"))
+            else:
+                raise AuthException("Provide credentials: username/password or Authorization Bearer token",
+                                    http_code=HTTPStatus.UNAUTHORIZED)
+
+            if not project:
+                # get first project for the user
+                project_list = self.keystone.projects.list(user=unscoped_token["user"]["id"])
+                if not project_list:
+                    raise AuthException("The user {} has not any project and cannot be used for authentication".
+                                        format(user), http_code=HTTPStatus.UNAUTHORIZED)
+                project_id = project_list[0].id
+            else:
+                if is_valid_uuid(project):
+                    project_id = project
+                else:
+                    project_name = project
+
+            scoped_token = self.keystone.get_raw_token_from_identity_service(
                 auth_url=self.auth_url,
-                token=token,
-                project_name=project,
+                project_name=project_name,
+                project_id=project_id,
                 user_domain_name=self.user_domain_name,
-                project_domain_name=self.project_domain_name)
-
-            return token["auth_token"], project_names
-        except ClientException:
-            self.logger.exception("Error during user authentication using keystone. Method: bearer")
-            raise AuthException("Error during user authentication using Keystone", http_code=HTTPStatus.UNAUTHORIZED)
+                project_domain_name=self.project_domain_name,
+                token=unscoped_token["auth_token"])
+
+            auth_token = {
+                "_id": scoped_token.auth_token,
+                "id": scoped_token.auth_token,
+                "user_id": scoped_token.user_id,
+                "username": scoped_token.username,
+                "project_id": scoped_token.project_id,
+                "project_name": scoped_token.project_name,
+                "expires": scoped_token.expires.timestamp(),
+                "issued_at": scoped_token.issued.timestamp()
+            }
+
+            return auth_token
+        except ClientException as e:
+            # self.logger.exception("Error during user authentication using keystone. Method: basic: {}".format(e))
+            raise AuthException("Error during user authentication using Keystone: {}".format(e),
+                                http_code=HTTPStatus.UNAUTHORIZED)
 
     def validate_token(self, token):
         """
         Check if the token is valid.
 
-        :param token: token to validate
-        :return: dictionary with information associated with the token. If the
-        token is not valid, returns None.
+        :param token: token id to be validated
+        :return: dictionary with information associated with the token:
+             "expires":
+             "_id": token_id,
+             "project_id": project_id,
+             "username": ,
+             "roles": list with dict containing {name, id}
+         If the token is not valid an exception is raised.
         """
         if not token:
             return
 
         try:
             token_info = self.keystone.tokens.validate(token=token)
-
-            return token_info
-        except ClientException:
-            self.logger.exception("Error during token validation using keystone")
-            raise AuthException("Error during token validation using Keystone", http_code=HTTPStatus.UNAUTHORIZED)
+            ses = {
+                "_id": token_info["auth_token"],
+                "id": token_info["auth_token"],
+                "project_id": token_info["project"]["id"],
+                "project_name": token_info["project"]["name"],
+                "user_id": token_info["user"]["id"],
+                "username": token_info["user"]["name"],
+                "roles": token_info["roles"],
+                "expires": token_info.expires.timestamp(),
+                "issued_at": token_info.issued.timestamp()
+            }
+
+            return ses
+        except ClientException as e:
+            # self.logger.exception("Error during token validation using keystone: {}".format(e))
+            raise AuthException("Error during token validation using Keystone: {}".format(e),
+                                http_code=HTTPStatus.UNAUTHORIZED)
 
     def revoke_token(self, token):
         """
@@ -136,160 +201,293 @@ class AuthconnKeystone(Authconn):
         :param token: token to be revoked
         """
         try:
+            self.logger.info("Revoking token: " + token)
             self.keystone.tokens.revoke_token(token=token)
 
             return True
-        except ClientException:
-            self.logger.exception("Error during token revocation using keystone")
-            raise AuthException("Error during token revocation using Keystone", http_code=HTTPStatus.UNAUTHORIZED)
+        except ClientException as e:
+            # self.logger.exception("Error during token revocation using keystone: {}".format(e))
+            raise AuthException("Error during token revocation using Keystone: {}".format(e),
+                                http_code=HTTPStatus.UNAUTHORIZED)
 
-    def get_project_list(self, token):
+    def create_user(self, user_info):
         """
-        Get all the projects associated with a user.
+        Create a user.
 
-        :param token: valid token
-        :return: list of projects
+        :param user_info: full user info.
+        :raises AuthconnOperationException: if user creation failed.
+        :return: returns the id of the user in keystone.
         """
         try:
-            token_info = self.keystone.tokens.validate(token=token)
-            projects = self.keystone.projects.list(user=token_info["user"]["id"])
-            project_names = [project.name for project in projects]
-
-            return project_names
-        except ClientException:
-            self.logger.exception("Error during user project listing using keystone")
-            raise AuthException("Error during user project listing using Keystone", http_code=HTTPStatus.UNAUTHORIZED)
-
-    def get_role_list(self, token):
+            new_user = self.keystone.users.create(user_info["username"], password=user_info["password"],
+                                                  domain=self.user_domain_name, _admin=user_info["_admin"])
+            if "project_role_mappings" in user_info.keys():
+                for mapping in user_info["project_role_mappings"]:
+                    self.assign_role_to_user(new_user.id, mapping["project"], mapping["role"])
+            return {"username": new_user.name, "_id": new_user.id}
+        except Conflict as e:
+            # self.logger.exception("Error during user creation using keystone: {}".format(e))
+            raise AuthconnOperationException(e, http_code=HTTPStatus.CONFLICT)
+        except ClientException as e:
+            # self.logger.exception("Error during user creation using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during user creation using Keystone: {}".format(e))
+
+    def update_user(self, user_info):
         """
-        Get role list for a scoped project.
+        Change the user name and/or password.
 
-        :param token: scoped token.
-        :return: returns the list of roles for the user in that project. If
-        the token is unscoped it returns None.
+        :param user_info: user info modifications
+        :raises AuthconnOperationException: if change failed.
         """
         try:
-            token_info = self.keystone.tokens.validate(token=token)
-            roles = self.keystone.roles.list(user=token_info["user"]["id"], project=token_info["project"]["id"])
-
-            return roles
-        except ClientException:
-            self.logger.exception("Error during user role listing using keystone")
-            raise AuthException("Error during user role listing using Keystone", http_code=HTTPStatus.UNAUTHORIZED)
-
-    def create_user(self, user, password):
+            user = user_info.get("_id") or user_info.get("username")
+            if is_valid_uuid(user):
+                user_obj_list = [self.keystone.users.get(user)]
+            else:
+                user_obj_list = self.keystone.users.list(name=user)
+            if not user_obj_list:
+                raise AuthconnNotFoundException("User '{}' not found".format(user))
+            user_obj = user_obj_list[0]
+            user_id = user_obj.id
+            if user_info.get("password") or user_info.get("username") \
+                    or user_info.get("add_project_role_mappings") or user_info.get("remove_project_role_mappings"):
+                self.keystone.users.update(user_id, password=user_info.get("password"), name=user_info.get("username"),
+                                           _admin={"created": user_obj._admin["created"], "modified": time.time()})
+            for mapping in user_info.get("remove_project_role_mappings", []):
+                self.remove_role_from_user(user_id, mapping["project"], mapping["role"])
+            for mapping in user_info.get("add_project_role_mappings", []):
+                self.assign_role_to_user(user_id, mapping["project"], mapping["role"])
+        except ClientException as e:
+            # self.logger.exception("Error during user password/name update using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during user update using Keystone: {}".format(e))
+
+    def delete_user(self, user_id):
         """
-        Create a user.
+        Delete user.
 
-        :param user: username.
-        :param password: password.
-        :raises AuthconnOperationException: if user creation failed.
+        :param user_id: user identifier.
+        :raises AuthconnOperationException: if user deletion failed.
         """
         try:
-            result = self.keystone.users.create(user, password=password, domain=self.user_domain_name)
-
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during user creation using keystone")
-            raise AuthconnOperationException("Error during user creation using Keystone")
+            result, detail = self.keystone.users.delete(user_id)
+            if result.status_code != 204:
+                raise ClientException("error {} {}".format(result.status_code, detail))
+            return True
+        except ClientException as e:
+            # self.logger.exception("Error during user deletion using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during user deletion using Keystone: {}".format(e))
 
-    def change_password(self, user, new_password):
+    def get_user_list(self, filter_q=None):
         """
-        Change the user password.
+        Get user list.
 
-        :param user: username.
-        :param new_password: new password.
-        :raises AuthconnOperationException: if user password change failed.
+        :param filter_q: dictionary to filter user list by name (username is also admited) and/or _id
+        :return: returns a list of users.
         """
         try:
-            result = self.keystone.users.update(user, password=new_password)
-
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during user password update using keystone")
-            raise AuthconnOperationException("Error during user password update using Keystone")
-
-    def delete_user(self, user):
+            filter_name = None
+            if filter_q:
+                filter_name = filter_q.get("name") or filter_q.get("username")
+            users = self.keystone.users.list(name=filter_name)
+            users = [{
+                "username": user.name,
+                "_id": user.id,
+                "id": user.id,
+                "_admin": user.to_dict().get("_admin", {})   # TODO: REVISE
+            } for user in users if user.name != self.admin_username]
+
+            if filter_q and filter_q.get("_id"):
+                users = [user for user in users if filter_q["_id"] == user["_id"]]
+
+            for user in users:
+                user["project_role_mappings"] = []
+                user["projects"] = []
+                projects = self.keystone.projects.list(user=user["_id"])
+                for project in projects:
+                    user["projects"].append(project.name)
+
+                    roles = self.keystone.roles.list(user=user["_id"], project=project.id)
+                    for role in roles:
+                        prm = {
+                            "project": project.id,
+                            "project_name": project.name,
+                            "role_name": role.name,
+                            "role": role.id,
+                        }
+                        user["project_role_mappings"].append(prm)
+
+            return users
+        except ClientException as e:
+            # self.logger.exception("Error during user listing using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during user listing using Keystone: {}".format(e))
+
+    def get_role_list(self, filter_q=None):
         """
-        Delete user.
+        Get role list.
 
-        :param user: username.
-        :raises AuthconnOperationException: if user deletion failed.
+        :param filter_q: dictionary to filter role list by _id and/or name.
+        :return: returns the list of roles.
         """
         try:
-            result = self.keystone.users.delete(user)
+            filter_name = None
+            if filter_q:
+                filter_name = filter_q.get("name")
+            roles_list = self.keystone.roles.list(name=filter_name)
 
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during user deletion using keystone")
-            raise AuthconnOperationException("Error during user deletion using Keystone")
+            roles = [{
+                "name": role.name,
+                "_id": role.id,
+                "_admin": role.to_dict().get("_admin", {}),
+                "permissions": role.to_dict().get("permissions", {})
+            } for role in roles_list if role.name != "service"]
 
-    def create_role(self, role):
+            if filter_q and filter_q.get("_id"):
+                roles = [role for role in roles if filter_q["_id"] == role["_id"]]
+
+            return roles
+        except ClientException as e:
+            # self.logger.exception("Error during user role listing using keystone: {}".format(e))
+            raise AuthException("Error during user role listing using Keystone: {}".format(e),
+                                http_code=HTTPStatus.UNAUTHORIZED)
+
+    def create_role(self, role_info):
         """
         Create a role.
 
-        :param role: role name.
+        :param role_info: full role info.
         :raises AuthconnOperationException: if role creation failed.
         """
         try:
-            result = self.keystone.roles.create(role, domain=self.user_domain_name)
-
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during role creation using keystone")
-            raise AuthconnOperationException("Error during role creation using Keystone")
-
-    def delete_role(self, role):
+            result = self.keystone.roles.create(role_info["name"], permissions=role_info.get("permissions"),
+                                                _admin=role_info.get("_admin"))
+            return result.id
+        except Conflict as ex:
+            raise AuthconnConflictException(str(ex))
+        except ClientException as e:
+            # self.logger.exception("Error during role creation using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during role creation using Keystone: {}".format(e))
+
+    def delete_role(self, role_id):
         """
         Delete a role.
 
-        :param role: role name.
+        :param role_id: role identifier.
         :raises AuthconnOperationException: if role deletion failed.
         """
         try:
-            result = self.keystone.roles.delete(role)
+            result, detail = self.keystone.roles.delete(role_id)
+
+            if result.status_code != 204:
+                raise ClientException("error {} {}".format(result.status_code, detail))
 
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during role deletion using keystone")
-            raise AuthconnOperationException("Error during role deletion using Keystone")
+            return True
+        except ClientException as e:
+            # self.logger.exception("Error during role deletion using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during role deletion using Keystone: {}".format(e))
 
-    def create_project(self, project):
+    def update_role(self, role_info):
+        """
+        Change the name of a role
+        :param role_info: full role info
+        :return: None
+        """
+        try:
+            rid = role_info["_id"]
+            if not is_valid_uuid(rid):   # Is this required?
+                role_obj_list = self.keystone.roles.list(name=rid)
+                if not role_obj_list:
+                    raise AuthconnNotFoundException("Role '{}' not found".format(rid))
+                rid = role_obj_list[0].id
+            self.keystone.roles.update(rid, name=role_info["name"], permissions=role_info.get("permissions"),
+                                       _admin=role_info.get("_admin"))
+        except ClientException as e:
+            # self.logger.exception("Error during role update using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during role updating using Keystone: {}".format(e))
+
+    def get_project_list(self, filter_q=None):
+        """
+        Get all the projects.
+
+        :param filter_q: dictionary to filter project list.
+        :return: list of projects
+        """
+        try:
+            filter_name = None
+            if filter_q:
+                filter_name = filter_q.get("name")
+            projects = self.keystone.projects.list(name=filter_name)
+
+            projects = [{
+                "name": project.name,
+                "_id": project.id,
+                "_admin": project.to_dict().get("_admin", {}),  # TODO: REVISE
+                "quotas": project.to_dict().get("quotas", {}),  # TODO: REVISE
+            } for project in projects]
+
+            if filter_q and filter_q.get("_id"):
+                projects = [project for project in projects
+                            if filter_q["_id"] == project["_id"]]
+
+            return projects
+        except ClientException as e:
+            # self.logger.exception("Error during user project listing using keystone: {}".format(e))
+            raise AuthException("Error during user project listing using Keystone: {}".format(e),
+                                http_code=HTTPStatus.UNAUTHORIZED)
+
+    def create_project(self, project_info):
         """
         Create a project.
 
-        :param project: project name.
+        :param project_info: full project info.
+        :return: the internal id of the created project
         :raises AuthconnOperationException: if project creation failed.
         """
         try:
-            result = self.keystone.project.create(project, self.project_domain_name)
-
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during project creation using keystone")
-            raise AuthconnOperationException("Error during project creation using Keystone")
-
-    def delete_project(self, project):
+            result = self.keystone.projects.create(project_info["name"], self.project_domain_name,
+                                                   _admin=project_info["_admin"],
+                                                   quotas=project_info.get("quotas", {})
+                                                   )
+            return result.id
+        except ClientException as e:
+            # self.logger.exception("Error during project creation using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during project creation using Keystone: {}".format(e))
+
+    def delete_project(self, project_id):
         """
         Delete a project.
 
-        :param project: project name.
+        :param project_id: project identifier.
         :raises AuthconnOperationException: if project deletion failed.
         """
         try:
-            result = self.keystone.project.delete(project)
+            # projects = self.keystone.projects.list()
+            # project_obj = [project for project in projects if project.id == project_id][0]
+            # result, _ = self.keystone.projects.delete(project_obj)
+
+            result, detail = self.keystone.projects.delete(project_id)
+            if result.status_code != 204:
+                raise ClientException("error {} {}".format(result.status_code, detail))
 
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during project deletion using keystone")
-            raise AuthconnOperationException("Error during project deletion using Keystone")
+            return True
+        except ClientException as e:
+            # self.logger.exception("Error during project deletion using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during project deletion using Keystone: {}".format(e))
+
+    def update_project(self, project_id, project_info):
+        """
+        Change the name of a project
+        :param project_id: project to be changed
+        :param project_info: full project info
+        :return: None
+        """
+        try:
+            self.keystone.projects.update(project_id, name=project_info["name"],
+                                          _admin=project_info["_admin"],
+                                          quotas=project_info.get("quotas", {})
+                                          )
+        except ClientException as e:
+            # self.logger.exception("Error during project update using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during project update using Keystone: {}".format(e))
 
     def assign_role_to_user(self, user, project, role):
         """
@@ -301,28 +499,73 @@ class AuthconnKeystone(Authconn):
         :raises AuthconnOperationException: if role assignment failed.
         """
         try:
-            result = self.keystone.roles.grant(role, user=user, project=project)
-
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during user role assignment using keystone")
-            raise AuthconnOperationException("Error during user role assignment using Keystone")
+            if is_valid_uuid(user):
+                user_obj = self.keystone.users.get(user)
+            else:
+                user_obj_list = self.keystone.users.list(name=user)
+                if not user_obj_list:
+                    raise AuthconnNotFoundException("User '{}' not found".format(user))
+                user_obj = user_obj_list[0]
+
+            if is_valid_uuid(project):
+                project_obj = self.keystone.projects.get(project)
+            else:
+                project_obj_list = self.keystone.projects.list(name=project)
+                if not project_obj_list:
+                    raise AuthconnNotFoundException("Project '{}' not found".format(project))
+                project_obj = project_obj_list[0]
+
+            if is_valid_uuid(role):
+                role_obj = self.keystone.roles.get(role)
+            else:
+                role_obj_list = self.keystone.roles.list(name=role)
+                if not role_obj_list:
+                    raise AuthconnNotFoundException("Role '{}' not found".format(role))
+                role_obj = role_obj_list[0]
+
+            self.keystone.roles.grant(role_obj, user=user_obj, project=project_obj)
+        except ClientException as e:
+            # self.logger.exception("Error during user role assignment using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during role '{}' assignment to user '{}' and project '{}' using "
+                                             "Keystone: {}".format(role, user, project, e))
 
     def remove_role_from_user(self, user, project, role):
         """
         Remove a role from a user in a project.
 
         :param user: username.
-        :param project: project name.
-        :param role: role name.
+        :param project: project name or id.
+        :param role: role name or id.
+
         :raises AuthconnOperationException: if role assignment revocation failed.
         """
         try:
-            result = self.keystone.roles.revoke(role, user=user, project=project)
-
-            if not result:
-                raise ClientException()
-        except ClientException:
-            self.logger.exception("Error during user role revocation using keystone")
-            raise AuthconnOperationException("Error during user role revocation using Keystone")
+            if is_valid_uuid(user):
+                user_obj = self.keystone.users.get(user)
+            else:
+                user_obj_list = self.keystone.users.list(name=user)
+                if not user_obj_list:
+                    raise AuthconnNotFoundException("User '{}' not found".format(user))
+                user_obj = user_obj_list[0]
+
+            if is_valid_uuid(project):
+                project_obj = self.keystone.projects.get(project)
+            else:
+                project_obj_list = self.keystone.projects.list(name=project)
+                if not project_obj_list:
+                    raise AuthconnNotFoundException("Project '{}' not found".format(project))
+                project_obj = project_obj_list[0]
+
+            if is_valid_uuid(role):
+                role_obj = self.keystone.roles.get(role)
+            else:
+                role_obj_list = self.keystone.roles.list(name=role)
+                if not role_obj_list:
+                    raise AuthconnNotFoundException("Role '{}' not found".format(role))
+                role_obj = role_obj_list[0]
+
+            self.keystone.roles.revoke(role_obj, user=user_obj, project=project_obj)
+        except ClientException as e:
+            # self.logger.exception("Error during user role revocation using keystone: {}".format(e))
+            raise AuthconnOperationException("Error during role '{}' revocation to user '{}' and project '{}' using "
+                                             "Keystone: {}".format(role, user, project, e))