src/LifeCycleCORBA/LifeCycleCORBA.py

   1 #  SALOME LifeCycleC RBA : implementation of containers and engines life cycle both in Python and C++
   2 #
   3 #  Copyright (C) 2003  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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
  21 #
  22 #
  23 #
  24 #  File   : LifeCycleCORBA.py
  25 #  Author : Paul RASCLE, EDF
  26 #  Module : SALOME
  27 #  $Header$
  28
  29 import os
  30 import sys
  31 import time
  32 import string
  33 from omniORB import CORBA
  34 import CosNaming
  35 import Engines
  36 import SALOME_ModuleCatalog
  37
  38 from SALOME_utilities import *
  39
  40 class LifeCycleCORBA:
  41     _orb = None
  42     _rootcontext = None
  43     _containerRootContext = None
  44     _catalog = None
  45
  46     #-------------------------------------------------------------------------
  47
  48     def __init__(self, orb):
  49         MESSAGE( "LifeCycleCORBA::__init__" )
  50         self._orb = orb
  51
  52         obj = self._orb.resolve_initial_references("NameService")
  53         self._rootContext = obj._narrow(CosNaming.NamingContext)
  54
  55         if self._rootContext is None:
  56             MESSAGE( "Name Service Reference is invalid" )
  57
  58         name = [CosNaming.NameComponent("Containers","dir")]
  59         try:
  60             self._containerRootContext = self._rootContext.bind_new_context(name)
  61
  62         except CosNaming.NamingContext.AlreadyBound, ex:
  63             MESSAGE( "/Containers.dir Context already exists" )
  64             obj = self._rootContext.resolve(name)
  65             self._containerRootContext = obj._narrow(CosNaming.NamingContext)
  66             if self._containerRootContext is None:
  67                 MESSAGE( "Containers.dir exists but it is not a NamingContext" )
  68
  69         name = [CosNaming.NameComponent("Kernel","dir"),
  70                 CosNaming.NameComponent("ModulCatalog","object")]
  71         try:
  72             obj = self._rootContext.resolve(name)
  73         except CosNaming.NamingContext.NotFound, ex:
  74             MESSAGE( "/Kernel.dir/ModulCatalog.object not found in Naming Service" )
  75
  76         self._catalog = obj._narrow(SALOME_ModuleCatalog.ModuleCatalog)
  77         if self._catalog is None:
  78             MESSAGE( "/Kernel.dir/ModulCatalog.object exists but is not a ModulCatalog" )
  79
  80     #-------------------------------------------------------------------------
  81
  82     def ContainerName(self, containerName):
  83         theComputer = ""
  84         try:
  85             theComputer , theContainer = containerName.split('/')
  86         except:
  87             theComputer = ""
  88             theContainer = containerName
  89         if theComputer == "" :
  90             theComputer = os.getenv("HOSTNAME")
  91         if theComputer == "localhost" :
  92             theComputer = os.getenv("HOSTNAME")
  93         computerSplitName = theComputer.split('.')
  94         theComputer = computerSplitName[0]
  95         MESSAGE( theComputer + theContainer )
  96         return theComputer,theContainer
  97
  98     #-------------------------------------------------------------------------
  99
 100     def ComputerPath(self, ComputerName ):
 101         try:
 102             #path = self._catalog.GetPathPrefix( ComputerName )
 103             path = os.getenv("KERNEL_ROOT_DIR") + "/bin/salome/"
 104         except SALOME_ModuleCatalog.NotFound, ex:
 105             path = ""
 106         return path
 107
 108     #-------------------------------------------------------------------------
 109
 110     def FindContainer(self, containerName):
 111         theComputer,theContainer = self.ContainerName( containerName )
 112         name = [CosNaming.NameComponent(theComputer,"dir"),
 113                 CosNaming.NameComponent(theContainer,"object")]
 114         obj = None
 115         try:
 116             obj = self._containerRootContext.resolve(name)
 117             MESSAGE( containerName + ".object found in Naming Service" )
 118
 119         except CosNaming.NamingContext.NotFound, ex:
 120             MESSAGE( containerName + ".object not found in Naming Service" )
 121
 122         if obj is None:
 123             container = None
 124         else:
 125             container = obj._narrow(Engines.Container)
 126             if container is None:
 127                 MESSAGE( containerName + ".object exists but is not a Container" )
 128         return container
 129
 130     #-------------------------------------------------------------------------
 131
 132     def FindOrStartContainer(self, theComputer , theContainer ):
 133         MESSAGE( "FindOrStartContainer" + theComputer + theContainer )
 134         aContainer = self.FindContainer( theComputer + "/" + theContainer )
 135         if aContainer is None :
 136             if (theContainer == "FactoryServer") | (theContainer == "FactoryServerPy") :
 137                 myMachine=string.split(os.getenv( "HOSTNAME" ),'.')
 138                 if theComputer == myMachine[0] :
 139                     rshstr = ""
 140                 else :
 141                     rshstr = "rsh -n " + theComputer + " "
 142                 path = self.ComputerPath( theComputer )
 143 ##                if path != "" :
 144 ##                    rshstr = rshstr + path + "/../bin/"
 145 ##                else :
 146 ##                    rshstr = rshstr + os.getenv( "KERNEL_ROOT_DIR" ) + "/bin/"
 147                 if theContainer == "FactoryServer" :
 148                     rshstr = rshstr + path + "SALOME_Container "
 149                 else :
 150                     rshstr = rshstr + path + "SALOME_ContainerPy.py '"
 151                 rshstr = rshstr + theContainer + " -"
 152                 omniORBcfg = os.getenv( "OMNIORB_CONFIG" )
 153                 file = os.open( omniORBcfg , os.O_RDONLY )
 154                 ORBInitRef = os.read(file,132)
 155                 if ORBInitRef[len(ORBInitRef)-1] == '\n' :
 156                     ORBInitRef,bsn = ORBInitRef.split('\n')
 157                 os.close( file )
 158                 rshstr = rshstr + ORBInitRef
 159                 if theContainer == "FactoryServerPy" :
 160                     rshstr = rshstr + "'"
 161                 rshstr = rshstr + " > /tmp/" + theContainer + "_"
 162                 rshstr = rshstr + theComputer
 163                 rshstr = rshstr + ".log 2>&1 &"
 164                 os.system( rshstr )
 165                 MESSAGE( "FindOrStartContainer" + rshstr + " done" )
 166             else :
 167                 if theContainer.find('Py') == -1 :
 168                     aContainer = self.FindContainer( theComputer + "/" + "FactoryServer" )
 169                 else :
 170                     aContainer = self.FindContainer( theComputer + "/" + "FactoryServerPy" )
 171                 aContainer = aContainer.start_impl( theContainer )
 172
 173             count = 21
 174             while aContainer is None :
 175                 time.sleep(1)
 176                 count = count - 1
 177                 MESSAGE( str(count) + ". Waiting for " + theComputer + "/" + theContainer )
 178                 aContainer = self.FindContainer( theComputer + "/" + theContainer )
 179                 if count == 0 :
 180                     return aContainer
 181
 182         return  aContainer
 183         #os.system("rsh -n dm2s0017 /export/home/KERNEL_ROOT/bin/runSession SALOME_Container -ORBInitRef NameService=corbaname::dm2s0017:1515")
 184
 185     #-------------------------------------------------------------------------
 186
 187     def FindOrLoadComponent(self, containerName, componentName):
 188
 189         theComputer,theContainer = self.ContainerName( containerName )
 190         name = [CosNaming.NameComponent(theComputer,"dir"),
 191                 CosNaming.NameComponent(theContainer,"dir"),
 192                 CosNaming.NameComponent(componentName,"object")]
 193         try:
 194             obj = self._containerRootContext.resolve(name)
 195         except CosNaming.NamingContext.NotFound, ex:
 196             MESSAGE( "component " + componentName + " not found, trying to load" )
 197             container = self.FindContainer(theComputer + "/" + theContainer)
 198             if container is None:
 199                 MESSAGE( "container " + theComputer + "/" + theContainer + " not found in Naming Service, trying to start" )
 200                 if (theContainer != "FactoryServer") & (theContainer != "FactoryServerPy") :
 201                     if theContainer.find('Py') == -1 :
 202                         theFactorycontainer = "FactoryServer"
 203                     else :
 204                         theFactorycontainer = "FactoryServerPy"
 205                     Factorycontainer = self.FindContainer(theComputer + "/" + theFactorycontainer)
 206                     if Factorycontainer is None:
 207                         MESSAGE( "container " + theComputer + "/" + theFactorycontainer + " not found in Naming Service, trying to start" )
 208                         Factorycontainer = self.FindOrStartContainer(theComputer,theFactorycontainer)
 209                 else:
 210                     Factorycontainer = self.FindOrStartContainer(theComputer,theContainer)
 211                 if Factorycontainer != None :
 212                     container = self.FindOrStartContainer(theComputer,theContainer)
 213
 214             if container != None:
 215                 compoinfo = self._catalog.GetComponent(componentName)
 216                 if compoinfo is None:
 217                     MESSAGE( "component " + componentName + " not found in Module Catalog" )
 218                 else:
 219                     try:
 220                         machineName = theComputer
 221                         path = compoinfo.GetPathPrefix(machineName) + "/"
 222                     except SALOME_ModuleCatalog.NotFound, ex:
 223                         MESSAGE( "machine " + machineName + " not found in Module Catalog" )
 224                         MESSAGE( "trying localhost" )
 225                         try:
 226                             path = compoinfo.GetPathPrefix("localhost") + "/"
 227                         except SALOME_ModuleCatalog.NotFound, ex:
 228                             path = ""
 229                     implementation = path + "lib" + componentName + "Engine.so"
 230                     MESSAGE( "Trying to load " + implementation )
 231                     try:
 232                         component = container.load_impl(componentName, implementation)
 233                         MESSAGE( "component " + component._get_instanceName() + " launched !" )
 234                         return component
 235                     except:
 236                         MESSAGE( "component " + componentName + " NOT launched !" )
 237
 238         else:
 239             try:
 240                 component = obj._narrow(Engines.Component)
 241                 if component is None:
 242                     MESSAGE( componentName + " is not a component !" )
 243                 else:
 244                     MESSAGE( "component " + component._get_instanceName() + " found !" )
 245                 return component
 246             except:
 247                 MESSAGE( componentName + " failure" )
 248                 return None