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# Copyright 2010 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Time an action which calls other timed actions."""
__all__ = ['NestingTimedAction']
__metaclass__ = type
import datetime
from timedaction import TimedAction
class NestingTimedAction(TimedAction):
"""A variation of TimedAction which creates a nested environment.
This is done by recording two 0 length timed actions in the timeline:
one at the start of the action and one at the end, with -start and
-stop appended to their categories.
See `TimedAction` for more information.
"""
def _init(self):
self.duration = datetime.timedelta()
self._category = self.category
self.category = self._category + '-start'
def finish(self):
"""Mark the TimedAction as finished."""
end = self.timeline.start(self._category + '-stop', self.detail)
end.duration = datetime.timedelta()
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