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# Copyright 2016 Red Hat, 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
class BaseExecutionContext(object, metaclass=abc.ABCMeta):
"""The execution interface returned by a wrapper.
Wrapper drivers return instances which implement this interface.
It is used to hold information and aid in the execution of a
single command.
"""
@abc.abstractmethod
def getPopen(self, **kwargs):
"""Create and return a subprocess.Popen factory wrapped however the
driver sees fit.
This method is required by the interface
:arg dict kwargs: key/values for use by driver as needed
:returns: a callable that takes the same args as subprocess.Popen
:rtype: Callable
"""
pass
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