def _compute_revokes_and_grants()

in django_airavata/apps/api/serializers.py [0:0]

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

    def _compute_revokes_and_grants(self, current_permission=None,
                                    new_permission=None):
        read_permissions = set((ResourcePermissionType.READ,))
        write_permissions = set((ResourcePermissionType.READ,
                                 ResourcePermissionType.WRITE))
        manage_share_permissions = set(
            (ResourcePermissionType.READ,
             ResourcePermissionType.WRITE,
             ResourcePermissionType.MANAGE_SHARING))
        current_permissions_set = set()
        new_permissions_set = set()
        if current_permission == ResourcePermissionType.READ:
            current_permissions_set = read_permissions
        elif current_permission == ResourcePermissionType.WRITE:
            current_permissions_set = write_permissions
        elif current_permission == ResourcePermissionType.MANAGE_SHARING:
            current_permissions_set = manage_share_permissions
        if new_permission == ResourcePermissionType.READ:
            new_permissions_set = read_permissions
        elif new_permission == ResourcePermissionType.WRITE:
            new_permissions_set = write_permissions
        elif new_permission == ResourcePermissionType.MANAGE_SHARING:
            new_permissions_set = manage_share_permissions

        # return tuple: permissions to revoke and permissions to grant
        return (current_permissions_set - new_permissions_set,
                new_permissions_set - current_permissions_set)