4cee45e2e3
Added a generic persistence API for JobBoards, Jobs, LogBooks, Workflows, FlowDetails, Tasks, and TaskDetails. The currently implemented backends are in-memory. Also implemented generic return types (listed above) for the generic API. Change-Id: I6d09860ee08a900faf2c213a230429bf9e0dec01
129 lines
3.7 KiB
Python
129 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
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#
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# 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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import contextlib
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from taskflow.generics import flow
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from taskflow.generics import flowdetail
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from taskflow.generics import job
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from taskflow.generics import jobboard
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from taskflow.generics import logbook
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from taskflow.generics import task
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from taskflow.generics import taskdetail
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from taskflow import utils
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class MemoryJobBoard(jobboard.JobBoard):
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def __init__(self, name, jb_id=None):
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super(MemoryJobBoard, self).__init__(name, jb_id)
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self._lock = utils.ReaderWriterLock()
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@contextlib.contextmanager
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def acquire_lock(self, read=True):
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try:
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self._lock.acquire(read)
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yield self._lock
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finally:
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self._lock.release()
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class MemoryJob(job.Job):
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def __init__(self, name, job_id=None):
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super(MemoryJob, self).__init__(name, job_id)
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self._lock = utils.ReaderWriterLock()
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@contextlib.contextmanager
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def acquire_lock(self, read=True):
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try:
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self._lock.acquire(read)
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yield self._lock
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finally:
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self._lock.release()
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class MemoryLogBook(logbook.LogBook):
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def __init__(self, name, lb_id=None):
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super(MemoryLogBook, self).__init__(name, lb_id)
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self._lock = utils.ReaderWriterLock()
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@contextlib.contextmanager
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def acquire_lock(self, read=True):
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try:
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self._lock.acquire(read)
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yield self._lock
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finally:
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self._lock.release()
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class MemoryFlow(flow.Flow):
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def __init__(self, name, wf_id=None):
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super(MemoryFlow, self).__init__(name, wf_id)
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self._lock = utils.ReaderWriterLock()
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self.flowdetails = {}
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@contextlib.contextmanager
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def acquire_lock(self, read=True):
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try:
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self._lock.acquire(read)
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yield self._lock
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finally:
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self._lock.release()
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class MemoryFlowDetail(flowdetail.FlowDetail):
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def __init__(self, name, wf, fd_id=None):
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super(MemoryFlowDetail, self).__init__(name, wf, fd_id)
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self._lock = utils.ReaderWriterLock()
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@contextlib.contextmanager
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def acquire_lock(self, read=True):
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try:
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self._lock.acquire(read)
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yield self._lock
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finally:
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self._lock.release()
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class MemoryTask(task.Task):
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def __init__(self, name, task_id=None):
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super(MemoryTask, self).__init__(name, task_id)
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self._lock = utils.ReaderWriterLock()
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self.taskdetails = {}
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@contextlib.contextmanager
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def acquire_lock(self, read=True):
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try:
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self._lock.acquire(read)
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yield self._lock
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finally:
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self._lock.release()
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class MemoryTaskDetail(taskdetail.TaskDetail):
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def __init__(self, name, task, td_id=None):
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super(MemoryTaskDetail, self).__init__(name, task, td_id)
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self._lock = utils.ReaderWriterLock()
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@contextlib.contextmanager
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def acquire_lock(self, read=True):
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try:
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self._lock.acquire(read)
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yield self._lock
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finally:
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self._lock.release()
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