deb-sahara/sahara/service/edp/base_engine.py
luhuichun c7e8c7bb71 [EDP] Add suspend_job() for sahara edp engine(oozie implementation)
add suspend_job in base_engine,and implement this in oozie engine.

Change-Id: I38d32c501d04c3fd0526343c841a55832a902a2c
Implements bp: add-suspend-resume-ability-for-edp-jobs
2016-02-23 12:03:18 +08:00

71 lines
1.7 KiB
Python

# Copyright (c) 2014 OpenStack Foundation
#
# 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 sahara import conductor as c
conductor = c.API
def optional(fun):
fun.__not_implemented__ = True
return fun
@six.add_metaclass(abc.ABCMeta)
class JobEngine(object):
@abc.abstractmethod
def cancel_job(self, job_execution):
pass
@abc.abstractmethod
def get_job_status(self, job_execution):
pass
@abc.abstractmethod
def run_job(self, job_execution):
pass
@abc.abstractmethod
def run_scheduled_job(self, job_execution):
pass
@abc.abstractmethod
def validate_job_execution(self, cluster, job, data):
pass
@staticmethod
@abc.abstractmethod
def get_possible_job_config(job_type):
return None
@staticmethod
@abc.abstractmethod
def get_supported_job_types():
return None
@optional
def suspend_job(self, job_execution):
pass
def does_engine_implement(self, fun_name):
fun = getattr(self, fun_name)
if not (fun and callable(fun)):
return False
return not hasattr(fun, '__not_implemented__')