bin/salome_session.py

   1 #  Copyright (C) 2007-2008  CEA/DEN, EDF R&D, OPEN CASCADE
   2 #
   3 #  Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 #  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 #
   6 #  This library is free software; you can redistribute it and/or
   7 #  modify it under the terms of the GNU Lesser General Public
   8 #  License as published by the Free Software Foundation; either
   9 #  version 2.1 of the License.
  10 #
  11 #  This library is distributed in the hope that it will be useful,
  12 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 #  Lesser General Public License for more details.
  15 #
  16 #  You should have received a copy of the GNU Lesser General Public
  17 #  License along with this library; if not, write to the Free Software
  18 #  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 #
  20 #  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  21 #
  22 ## @package salome_session
  23 # \brief Module that provides the SalomeSession object that helps to launch
  24 #        a SALOME script session
  25 #
  26 #
  27
  28 import os
  29 import sys
  30 import string
  31 import socket
  32
  33 _session = None
  34
  35 def startSession(modules=[]):
  36     global _session
  37     if _session: return
  38     searchFreePort()
  39     _session = SalomeSession(modules)
  40     return
  41
  42 def getShortHostName():
  43     """
  44     gives Hostname without domain extension.
  45     SALOME naming service needs short Hostnames (without domain extension).
  46     HOSTNAME is not allways defined in environment,
  47     socket.gethostname() gives short or complete Hostname, depending on
  48     defined aliases.
  49     """
  50     from salome_utils import getShortHostName
  51     return getShortHostName()
  52
  53 def searchFreePort():
  54     """
  55     Search free port for SALOME session.
  56     Returns first found free port number.
  57     """
  58     print "Searching a free port for naming service:",
  59     from salome_utils import generateFileName, getHostName
  60     hostname = getHostName()
  61     NSPORT = 2810
  62     limit  = NSPORT+100
  63     while 1:
  64         print "%s "%(NSPORT),
  65         status = os.system("netstat -ltn | grep -E :%s"%(NSPORT))
  66         if status:
  67             home  = os.getenv("HOME")
  68             appli = os.getenv("APPLI")
  69             kwargs={}
  70             if appli is not None:
  71               home = os.path.join(home, appli,"USERS")
  72               kwargs["with_username"]=True
  73             omniorb_config = generateFileName(home, prefix="omniORB",
  74                                               extension="cfg",
  75                                               hidden=True,
  76                                               with_hostname=True,
  77                                               with_port=NSPORT,
  78                                               **kwargs)
  79             f = open(omniorb_config, "w")
  80             f.write("ORBInitRef NameService=corbaname::%s:%s\n"%(hostname, NSPORT))
  81             f.close()
  82             os.environ['OMNIORB_CONFIG'] = omniorb_config
  83             last_running_config = generateFileName(home, prefix="omniORB",
  84                                                    suffix="last",
  85                                                    extension="cfg",
  86                                                    hidden=True,
  87                                                    **kwargs)
  88             os.environ['LAST_RUNNING_CONFIG'] = last_running_config
  89             if os.access(last_running_config,os.F_OK):
  90                 os.unlink(last_running_config)
  91                 pass
  92             os.symlink(omniorb_config,last_running_config)
  93             print "- Ok"
  94             break
  95         if NSPORT == limit:
  96             msg  = ""
  97             msg += "Can not find a free port to launch omniNames\n"
  98             msg += "Kill the running servers and try again.\n"
  99             raise RuntimeError, msg
 100         NSPORT = NSPORT+1
 101         pass
 102     os.environ['NSHOST'] = hostname
 103     os.environ['NSPORT'] = str(NSPORT)
 104     return NSPORT
 105
 106
 107 class SalomeSession(object):
 108     """Salome session launcher"""
 109     import runSalome
 110     import killSalomeWithPort
 111     import killSalome
 112     def __init__(self, modules):
 113         import runSalome
 114         sys.argv  = ["dummy.py"]
 115         sys.argv += ["--terminal"]
 116         if modules:
 117             sys.argv += ['--modules=%s'%(",".join(modules))]
 118             pass
 119         runSalome.clt, runSalome.args = runSalome.main()
 120         import salome
 121         salome.salome_init()
 122         return
 123     def __del__(self):
 124         import runSalome
 125         runSalome.killLocalPort()
 126         return
 127     pass