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# Microsoft Azure Linux Agent
#
# Copyright 2020 Microsoft Corporation
#
# 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.
#
# Requires Python 2.6+ and Openssl 1.0+
#
class ThreadHandlerInterface(object):
"""
Interface for all thread handlers created and maintained by the GuestAgent.
"""
@staticmethod
def get_thread_name():
raise NotImplementedError("get_thread_name() not implemented")
def run(self):
raise NotImplementedError("run() not implemented")
def keep_alive(self):
"""
Returns true if the thread handler should be restarted when the thread dies
and false when it should remain dead.
Defaults to True and can be overridden by sub-classes.
"""
return True
def is_alive(self):
raise NotImplementedError("is_alive() not implemented")
def start(self):
raise NotImplementedError("start() not implemented")
def stop(self):
raise NotImplementedError("stop() not implemented")
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