67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Executor which receives operations and run them.
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"""
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from abc import ABCMeta
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from abc import abstractmethod
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import six
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@six.add_metaclass(ABCMeta)
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class BaseExecutor(object):
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def __init__(self, operation_manager):
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self._operation_manager = operation_manager
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super(BaseExecutor, self).__init__()
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@abstractmethod
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def execute_operation(self, operation_id, triggered_time,
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expect_start_time, window_time, **kwargs):
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"""Execute an operation.
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:param operation_id: ID of operation
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:param triggered_time: time when the operation is triggered
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:param expect_start_time: expect time when to run the operation
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:param window_time: time how long to wait to runn the operation after
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expect_start_time
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"""
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pass
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@abstractmethod
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def cancel_operation(self, operation_id):
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"""Cancel the execution of operation.
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There is no effective for the operations which are running, but
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for operations which are in waiting, they will not be executed.
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:param operation_id: ID of operation
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"""
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pass
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@abstractmethod
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def resume_operation(self, operation_id, **kwargs):
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"""Resume operations.
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Get operations which are not finished from DB by operation_id,
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and execute them again.
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:param operation_id: ID of operation
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"""
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pass
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@abstractmethod
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def shutdown(self):
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"""Shutdown the executor"""
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pass
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