74 lines
2.4 KiB
Python
74 lines
2.4 KiB
Python
# Copyright 2017 - Brocade Communications Systems, Inc.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import abc
|
|
import six
|
|
|
|
from mistral import serialization
|
|
from mistral_lib.actions import types
|
|
from stevedore import driver
|
|
|
|
_EXECUTORS = {}
|
|
serialization.register_serializer(types.Result, types.ResultSerializer())
|
|
|
|
|
|
def cleanup():
|
|
global _EXECUTORS
|
|
_EXECUTORS = {}
|
|
|
|
|
|
def get_executor(exec_type):
|
|
global _EXECUTORS
|
|
|
|
if not _EXECUTORS.get(exec_type):
|
|
mgr = driver.DriverManager(
|
|
'mistral.executors',
|
|
exec_type,
|
|
invoke_on_load=True
|
|
)
|
|
|
|
_EXECUTORS[exec_type] = mgr.driver
|
|
|
|
return _EXECUTORS[exec_type]
|
|
|
|
|
|
@six.add_metaclass(abc.ABCMeta)
|
|
class Executor(object):
|
|
"""Action executor interface."""
|
|
|
|
@abc.abstractmethod
|
|
def run_action(self, action_ex_id, action_cls_str, action_cls_attrs,
|
|
params, safe_rerun, execution_context, redelivered=False,
|
|
target=None, async_=True, timeout=None):
|
|
"""Runs action.
|
|
|
|
:param timeout: a period of time in seconds after which execution of
|
|
action will be interrupted
|
|
:param action_ex_id: Corresponding action execution id.
|
|
:param action_cls_str: Path to action class in dot notation.
|
|
:param action_cls_attrs: Attributes of action class which
|
|
will be set to.
|
|
:param params: Action parameters.
|
|
:param safe_rerun: Tells if given action can be safely rerun.
|
|
:param execution_context: A dict of values providing information about
|
|
the current execution.
|
|
:param redelivered: Tells if given action was run before on another
|
|
executor.
|
|
:param target: Target (group of action executors).
|
|
:param async_: If True, run action in asynchronous mode (w/o waiting
|
|
for completion).
|
|
:return: Action result.
|
|
"""
|
|
raise NotImplementedError()
|