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 import os
  23 import sys
  24 import string
  25 import socket
  26
  27 _session = None
  28
  29 def startSession(modules=[]):
  30     global _session
  31     if _session: return
  32     searchFreePort()
  33     _session = SalomeSession(modules)
  34     return
  35
  36 def getShortHostName():
  37     """
  38     gives Hostname without domain extension.
  39     SALOME naming service needs short Hostnames (without domain extension).
  40     HOSTNAME is not allways defined in environment,
  41     socket.gethostname() gives short or complete Hostname, depending on
  42     defined aliases.
  43     """
  44     from salome_utils import getShortHostName
  45     return getShortHostName()
  46
  47 def searchFreePort():
  48     """
  49     Search free port for SALOME session.
  50     Returns first found free port number.
  51     """
  52     print "Searching a free port for naming service:",
  53     from salome_utils import generateFileName, getHostName
  54     hostname = getHostName()
  55     NSPORT = 2810
  56     limit  = NSPORT+100
  57     while 1:
  58         print "%s "%(NSPORT),
  59         status = os.system("netstat -ltn | grep -E :%s"%(NSPORT))
  60         if status:
  61             home  = os.getenv("HOME")
  62             appli = os.getenv("APPLI")
  63             kwargs={}
  64             if appli is not None:
  65               home = os.path.join(home, appli,"USERS")
  66               kwargs["with_username"]=True
  67             omniorb_config = generateFileName(home, prefix="omniORB",
  68                                               extension="cfg",
  69                                               hidden=True,
  70                                               with_hostname=True,
  71                                               with_port=NSPORT,
  72                                               **kwargs)
  73             f = open(omniorb_config, "w")
  74             f.write("ORBInitRef NameService=corbaname::%s:%s\n"%(hostname, NSPORT))
  75             f.close()
  76             os.environ['OMNIORB_CONFIG'] = omniorb_config
  77             last_running_config = generateFileName(home, prefix="omniORB",
  78                                                    suffix="last",
  79                                                    extension="cfg",
  80                                                    hidden=True,
  81                                                    **kwargs)
  82             os.environ['LAST_RUNNING_CONFIG'] = last_running_config
  83             if os.access(last_running_config,os.F_OK):
  84                 os.unlink(last_running_config)
  85                 pass
  86             os.symlink(omniorb_config,last_running_config)
  87             print "- Ok"
  88             break
  89         if NSPORT == limit:
  90             msg  = ""
  91             msg += "Can not find a free port to launch omniNames\n"
  92             msg += "Kill the running servers and try again.\n"
  93             raise msg
  94         NSPORT = NSPORT+1
  95         pass
  96     os.environ['NSHOST'] = hostname
  97     os.environ['NSPORT'] = str(NSPORT)
  98     return NSPORT
  99
 100
 101 class SalomeSession(object):
 102     import runSalome
 103     import killSalomeWithPort
 104     import killSalome
 105     def __init__(self, modules):
 106         import runSalome
 107         sys.argv  = ["dummy.py"]
 108         sys.argv += ["--terminal"]
 109         if modules:
 110             sys.argv += ['--modules=%s'%(",".join(modules))]
 111             pass
 112         runSalome.clt, runSalome.args = runSalome.main()
 113         import salome
 114         salome.salome_init()
 115         return
 116     def __del__(self):
 117         import runSalome
 118         runSalome.killLocalPort()
 119         return
 120     pass