Source Code for Module EDSession

 1  # -*- coding: utf8 -*- 
 2  # 
 3  #    Project: The EDNA Kernel 
 4  #             http://www.edna-site.org 
 5  # 
 6  #    File: "$Id:$" 
 7  # 
 8  #    Copyright (C) 2008-2009 European Synchrotron Radiation Facility 
 9  #                            Grenoble, France 
10  # 
11  #    Principal authors: Jérôme Kieffer (jerome.kieffer@esrf.fr) 
12  #  
13  # 
14  #    This program is free software: you can redistribute it and/or modify 
15  #    it under the terms of the GNU Lesser General Public License as published 
16  #    by the Free Software Foundation, either version 3 of the License, or 
17  #    (at your option) any later version. 
18  # 
19  #    This program is distributed in the hope that it will be useful, 
20  #    but WITHOUT ANY WARRANTY; without even the implied warranty of 
21  #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
22  #    GNU Lesser General Public License for more details. 
23  # 
24  #    You should have received a copy of the GNU General Public License 
25  #    and the GNU Lesser General Public License  along with this program.   
26  #    If not, see <http://www.gnu.org/licenses/>. 
27  # 
28  __authors__ = [ "Jérôme Kieffer" ] 
29  __contact__ = "jerome.kieffer@esrf.fr" 
30  __license__ = "LGPLv3+" 
31  __copyright__ = "European Synchrotron Radiation Facility, Grenoble, France" 
32  __date__ = "27/05/2011" 
33   
34  import os, time 
35  from EDObject import EDObject 
36  from EDVerbose import EDVerbose 
37   
38 -class classproperty(property): 
39 -    def __get__(self, obj, type_): 
40          return self.fget.__get__(None, type_)() 
41 -    def __set__(self, obj, value): 
42          cls = type(obj) 
43          return self.fset.__get__(None, cls)(value) 
44   
45 -class EDSession(EDObject): 
46      """ 
47      keep track on a temporary zone writable (/buffer at ESRF, /scratch elsewhere, ...) 
48      """ 
49      _sessionId = None 
50   
51      @classmethod 
52 -    def getSessionId(cls): 
53          """getter for session ID""" 
54          if cls._sessionId is None: 
55              cls._sessionId = time.strftime("%Y%m%d-%H%M%S") 
56          return cls._sessionId 
57   
58      @classmethod 
59 -    def setSessionId(cls, idSession): 
60          """setter for session ID. Only valid if not yet set !!!!""" 
61          if cls._sessionId is None: 
62              cls._sessionId = idSession 
63          else: 
64              EDVerbose.ERROR("You are not allowed to change the session ID !!!!") 
65      sessionId = classproperty(getSessionId, setSessionId) 
66