2 # -*- coding: iso-8859-1 -*-
3 # Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
5 # Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
6 # CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
8 # This library is free software; you can redistribute it and/or
9 # modify it under the terms of the GNU Lesser General Public
10 # License as published by the Free Software Foundation; either
11 # version 2.1 of the License, or (at your option) any later version.
13 # This library is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 # Lesser General Public License for more details.
18 # You should have received a copy of the GNU Lesser General Public
19 # License along with this library; if not, write to the Free Software
20 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
28 import cPickle as pickle
34 logger = logging.getLogger(__name__)
35 # logger.setLevel(logging.DEBUG)
36 ch = logging.StreamHandler()
37 ch.setLevel(logging.DEBUG)
38 formatter = logging.Formatter("%(levelname)s:%(threadName)s:%(message)s")
39 ch.setFormatter(formatter)
43 logger = createLogger()
45 #------------------------------------
46 # A file locker (Linux only)
48 class PortManagerLock:
49 def __init__(self, filename, readonly=False, blocking=True):
50 # This will create it if it does not exist already
51 logger.debug("Create lock on %s"%filename)
52 self.__readonly = readonly
53 self.__blocking = blocking
54 self.__filename = filename
58 self.handle = open(self.__filename, 'a+')
62 if not self.__blocking: # Raise an IOError exception if file has already been locked
63 mode = mode | fcntl.LOCK_NB
64 fcntl.flock(self.handle, mode)
65 logger.debug("lock acquired %s"%self.__blocking)
68 fcntl.flock(self.handle, fcntl.LOCK_UN)
69 logger.debug("lock released")
72 logger.debug("Close lock file")
74 os.remove(self.__filename)
77 def _getConfigurationFilename():
78 omniorbUserPath = os.getenv("OMNIORB_USER_PATH")
80 from salome_utils import generateFileName
81 portmanager_config = generateFileName(omniorbUserPath,
86 lock_file = portmanager_config + "-lock"
87 return (portmanager_config, lock_file)
90 def __isPortUsed(port, busy_ports):
91 return (port in busy_ports) or __isNetworkConnectionActiveOnPort(port)
94 def __isNetworkConnectionActiveOnPort(port):
95 # :NOTE: Under windows:
96 # netstat options -l and -t are unavailable
97 # grep command is unavailable
98 from subprocess import Popen, PIPE
99 (stdout, stderr) = Popen(['netstat','-an'], stdout=PIPE).communicate()
101 buf = StringIO.StringIO(stdout)
102 ports = buf.readlines()
103 # search for TCP - LISTEN connections
105 regObj = re.compile( ".*tcp.*:([0-9]+).*:.*listen", re.IGNORECASE );
108 p = int(regObj.match(item).group(1))
109 if p == port: return True
114 def getPort(preferedPort=None):
115 logger.debug("GET PORT")
117 config_file, lock_file = _getConfigurationFilename()
118 with open(lock_file, 'w') as lock:
120 fcntl.flock(lock, fcntl.LOCK_EX)
123 config = {'busy_ports':[]}
124 logger.debug("read configuration file")
126 with open(config_file, 'r') as f:
127 config = pickle.load(f)
128 except IOError: # empty file
131 logger.debug("load busy_ports: %s"%str(config["busy_ports"]))
134 busy_ports = config["busy_ports"]
136 if not port or __isPortUsed(port, busy_ports):
138 while __isPortUsed(port, busy_ports):
141 msg += "Can't find a free port to launch omniNames\n"
142 msg += "Try to kill the running servers and then launch SALOME again.\n"
143 raise RuntimeError, msg
145 logger.debug("found free port: %s"%str(port))
146 config["busy_ports"].append(port)
149 logger.debug("write busy_ports: %s"%str(config["busy_ports"]))
151 with open(config_file, 'w') as f:
152 pickle.dump(config, f)
157 fcntl.flock(lock, fcntl.LOCK_UN)
159 logger.debug("get port: %s"%str(port))
163 def releasePort(port):
165 logger.debug("RELEASE PORT (%s)"%port)
167 config_file, lock_file = _getConfigurationFilename()
168 with open(lock_file, 'w') as lock:
170 fcntl.flock(lock, fcntl.LOCK_EX)
173 config = {'busy_ports':[]}
174 logger.debug("read configuration file")
176 with open(config_file, 'r') as f:
177 config = pickle.load(f)
178 except IOError: # empty file
181 logger.debug("load busy_ports: %s"%str(config["busy_ports"]))
183 # remove port from list
184 busy_ports = config["busy_ports"]
186 if port in busy_ports:
187 busy_ports.remove(port)
188 config["busy_ports"] = busy_ports
191 logger.debug("write busy_ports: %s"%str(config["busy_ports"]))
193 with open(config_file, 'w') as f:
194 pickle.dump(config, f)
199 fcntl.flock(lock, fcntl.LOCK_UN)
201 logger.debug("released port port: %s"%str(port))
205 config_file, lock_file = _getConfigurationFilename()
206 with open(lock_file, 'w') as lock:
208 fcntl.flock(lock, fcntl.LOCK_EX)
211 config = {'busy_ports':[]}
212 logger.debug("read configuration file")
214 with open(config_file, 'r') as f:
215 config = pickle.load(f)
216 except IOError: # empty file
219 logger.debug("load busy_ports: %s"%str(config["busy_ports"]))
221 busy_ports = config["busy_ports"]
223 fcntl.flock(lock, fcntl.LOCK_UN)