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67 lines
1.9 KiB
67 lines
1.9 KiB
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 GNS3 Technologies Inc.
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#
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# This program 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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# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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#TODO: make this more generic (not json but *args?)
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class BaseModule(object):
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_instance = None
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@classmethod
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def instance(cls):
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if cls._instance is None:
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cls._instance = cls()
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asyncio.async(cls._instance.run())
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return cls._instance
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def __init__(self):
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self._queue = asyncio.Queue()
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@classmethod
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def destroy(cls):
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future = asyncio.Future()
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cls._instance._queue.put_nowait((future, None, ))
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yield from asyncio.wait([future])
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cls._instance = None
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@asyncio.coroutine
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def put(self, json):
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future = asyncio.Future()
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self._queue.put_nowait((future, json, ))
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yield from asyncio.wait([future])
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return future.result()
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@asyncio.coroutine
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def run(self):
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while True:
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future, json = yield from self._queue.get()
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if json is None:
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future.set_result(True)
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break
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try:
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result = yield from self.process(json)
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future.set_result(result)
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except Exception as e:
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future.set_exception(e)
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@asyncio.coroutine
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def process(self, json):
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raise NotImplementedError
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