42 def _add_role(server, role, action):  argument
52     server_models.validate(role=role)
53     if role in server.get_role_names():
55                 'Server %s already has role %s.' % (server.hostname, role))
58     if not server_manager_utils.check_server(server.hostname, role):
60                 'Server %s is not ready for role %s.' % (server.hostname, role))
62     if (role in server_models.ServerRole.ROLES_REQUIRE_UNIQUE_INSTANCE and
65                 roles__role=role, status=server_models.Server.STATUS.PRIMARY)
69                 (role, servers[0].hostname, role))
71     server_models.ServerRole.objects.create(server=server, role=role)
74     server_manager_actions.try_execute(server, [role], enable=True,
77     print 'Role %s is added to server %s.' % (role, server.hostname)
80 def _delete_role(server, role, action=False):  argument
90     server_models.validate(role=role)
91     if role not in server.get_role_names():
93                 'Server %s does not have role %s.' % (server.hostname, role))
96         server_manager_utils.warn_missing_role(role, server)
100     server_manager_actions.try_execute(server, [role], enable=False,
103     print 'Deleting role %s from server %s...' % (role, server.hostname)
104     server.roles.get(role=role).delete()
108     server_manager_actions.try_execute(server, [role], enable=False,
115     print 'Role %s is deleted from server %s.' % (role, server.hostname)
146         for role in unique_roles:
148                     roles__role=role.role,
153                         'role.' % (role.role, servers[0].hostname))
159         for role in server.get_role_names():
160             server_manager_utils.warn_missing_role(role, server)
184 def create(hostname, role=None, note=None):  argument
195     server_models.validate(hostname=hostname, role=role)
199     server_models.ServerRole.objects.create(server=server, role=role)
220         for role in server.roles.all():
221             _delete_role(server, role.role)
228 def modify(hostname, role=None, status=None, delete=False, note=None,  argument
248     if role:
250             _add_role(server, role, action)
252             _delete_role(server, role, action)