mirror of
https://github.com/thegeeklab/ansible-later.git
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69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
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# This file is part of Ansible
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#
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# Ansible 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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# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import multiprocessing
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import multiprocessing.pool as mp
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# timeout function to make sure some fact gathering
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# steps do not exceed a time limit
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GATHER_TIMEOUT = None
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DEFAULT_GATHER_TIMEOUT = 10
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class TimeoutError(Exception):
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pass
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def timeout(seconds=None, error_message="Timer expired"):
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"""
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Timeout decorator to expire after a set number of seconds. This raises an
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ansible.module_utils.facts.TimeoutError if the timeout is hit before the
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function completes.
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"""
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def decorator(func):
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def wrapper(*args, **kwargs):
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timeout_value = seconds
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if timeout_value is None:
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timeout_value = globals().get('GATHER_TIMEOUT') or DEFAULT_GATHER_TIMEOUT
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pool = mp.ThreadPool(processes=1)
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res = pool.apply_async(func, args, kwargs)
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pool.close()
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try:
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return res.get(timeout_value)
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except multiprocessing.TimeoutError:
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# This is an ansible.module_utils.common.facts.timeout.TimeoutError
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raise TimeoutError('Timer expired after %s seconds' % timeout_value)
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return wrapper
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# If we were called as @timeout, then the first parameter will be the
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# function we are to wrap instead of the number of seconds. Detect this
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# and correct it by setting seconds to our default value and return the
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# inner decorator function manually wrapped around the function
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if callable(seconds):
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func = seconds
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seconds = None
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return decorator(func)
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# If we were called as @timeout([...]) then python itself will take
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# care of wrapping the inner decorator around the function
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return decorator
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