Markus Zolliker
107e1d84b0
in case a remote is disconnected and can be reconnected quickly, a seamless routing is possible. However, when after reconnection the description has changed, the server is restarted. + more information in error messages from dispatcher Change-Id: I0837e0254aee3d12a26481f6fd697081a53aabba Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/22506 Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch> Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
84 lines
2.5 KiB
Python
84 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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# *****************************************************************************
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc.,
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# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Module authors:
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# Markus Zolliker <markus.zolliker@psi.ch>
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#
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# *****************************************************************************
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import threading
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class MultiEvent(threading.Event):
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"""Class implementing multi event objects.
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meth:`new` creates Event like objects
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meth:'wait` waits for all of them being set
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"""
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class SingleEvent:
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"""Single Event
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remark: :meth:`wait` is not implemented on purpose
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"""
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def __init__(self, multievent):
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self.multievent = multievent
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self.multievent._clear(self)
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def clear(self):
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self.multievent._clear(self)
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def set(self):
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self.multievent._set(self)
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def is_set(self):
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return self in self.multievent.events
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def __init__(self):
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self.events = set()
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self._lock = threading.Lock()
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super().__init__()
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def new(self):
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"""create a new SingleEvent"""
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return self.SingleEvent(self)
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def set(self):
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raise ValueError('a multievent must not be set directly')
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def clear(self):
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raise ValueError('a multievent must not be cleared directly')
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def _set(self, event):
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"""internal: remove event from the event list"""
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with self._lock:
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self.events.discard(event)
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if self.events:
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return
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super().set()
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def _clear(self, event):
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"""internal: add event to the event list"""
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with self._lock:
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self.events.add(event)
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super().clear()
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def wait(self, timeout=None):
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if not self.events: # do not wait if events are empty
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return
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super().wait(timeout)
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