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146 lines
4.3 KiB
146 lines
4.3 KiB
# Author: Nic Wolfe <nic@wolfeden.ca>
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# URL: http://code.google.com/p/sickbeard/
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#
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# This file is part of SickGear.
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#
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# SickGear is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# SickGear is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with SickGear. If not, see <http://www.gnu.org/licenses/>.
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import copy
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import datetime
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import threading
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from . import logger
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# noinspection PyUnreachableCode
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if False:
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from typing import AnyStr, List, Union
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from .search_queue import BaseSearchQueueItem
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from .show_queue import ShowQueueItem
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class QueuePriorities(object):
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LOW = 10
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NORMAL = 20
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HIGH = 30
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VERYHIGH = 40
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class GenericQueue(object):
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def __init__(self):
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self.currentItem = None # type: QueueItem or None
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self.queue = [] # type: List[Union[QueueItem, BaseSearchQueueItem, ShowQueueItem]]
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self.queue_name = 'QUEUE' # type: AnyStr
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self.min_priority = 0 # type: int
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self.lock = threading.Lock()
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def pause(self):
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logger.log(u'Pausing queue')
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if self.lock:
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self.min_priority = 999999999999
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def unpause(self):
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logger.log(u'Unpausing queue')
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with self.lock:
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self.min_priority = 0
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def add_item(self, item):
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"""
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:param item: Queue Item
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:type item: QueueItem
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:return: Queue Item
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:rtype: QueueItem
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"""
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with self.lock:
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item.added = datetime.datetime.now()
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self.queue.append(item)
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return item
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def run(self):
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# only start a new task if one isn't already going
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with self.lock:
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if None is self.currentItem or not self.currentItem.is_alive():
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# if the thread is dead then the current item should be finished
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if self.currentItem:
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self.currentItem.finish()
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self.currentItem = None
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# if there's something in the queue then run it in a thread and take it out of the queue
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if 0 < len(self.queue):
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self.queue.sort(key=lambda y: (-y.priority, y.added))
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if self.queue[0].priority < self.min_priority:
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return
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# launch the queue item in a thread
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self.currentItem = self.queue.pop(0)
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if 'SEARCHQUEUE' != self.queue_name:
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self.currentItem.name = self.queue_name + '-' + self.currentItem.name
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self.currentItem.start()
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class QueueItem(threading.Thread):
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def __init__(self, name, action_id=0):
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# type: (AnyStr, int) -> None
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"""
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:param name: name
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:param action_id:
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"""
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super(QueueItem, self).__init__()
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self.name = name.replace(' ', '-').upper() # type: AnyStr
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self.inProgress = False # type: bool
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self.priority = QueuePriorities.NORMAL # type: int
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self.action_id = action_id # type: int
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self.stop = threading.Event()
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self.added = None
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def copy(self, deepcopy_obj=None):
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"""
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:param deepcopy_obj: List of properties to be deep copied
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:type deepcopy_obj: List
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:return: a shallow copy of QueueItem with optional deepcopy of in deepcopy_obj listed objects
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:rtype: QueueItem
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"""
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cls = self.__class__
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result = cls.__new__(cls)
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result.__dict__.update(self.__dict__)
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if deepcopy_obj:
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for o in deepcopy_obj:
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if self.__dict__.get(o):
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new_seg = copy.deepcopy(self.__dict__.get(o))
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result.__dict__[o] = new_seg
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return result
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def run(self):
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"""Implementing classes should call this"""
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self.inProgress = True
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def finish(self):
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"""Implementing Classes should call this"""
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self.inProgress = False
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threading.currentThread().name = self.name
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