def test_write_pid_file(self):
self.inst.startApplication()
#get pid/procname of current process
this_pid = os.getpid()
this_procname = tools.processName(this_pid)
with open(self.file_name, 'rt') as file_with_pid:
self.assertEqual(file_with_pid.read(), '{}\n{}'.format(this_pid, this_procname))
def test_autoExit_unique_process(self):
self.inst = ApplicationInstance(os.path.abspath(self.file_name),
autoExit = True)
self.assertExists(self.file_name)
this_pid = os.getpid()
this_procname = tools.processName(this_pid)
with open(self.file_name, 'rt') as file_with_pid:
self.assertEqual(file_with_pid.read(), '{}\n{}'.format(this_pid, this_procname))
def test_autoExit_other_running_process(self):
pid = self.createProcess()
procname = tools.processName(pid)
# create file with pid and process name
with open(self.file_name, "wt") as file_with_pid:
file_with_pid.write(str(pid) + "\n")
file_with_pid.write(procname)
with self.assertRaises(SystemExit):
self.inst = ApplicationInstance(os.path.abspath(self.file_name),
autoExit=True)
def test_existing_process_with_wrong_pid(self):
"""
Test the check function with an existing process with wrong pid
"""
pid = self.createProcess()
procname = tools.processName(pid)
# create file with pid and process name
with open(self.file_name, "wt") as file_with_pid:
file_with_pid.write("987654321\n")
file_with_pid.write(procname)
# Execute test
self.assertTrue(self.inst.check())
def startApplication(self):
"""
Called when the single instance starts to save its pid
"""
pid = os.getpid()
procname = tools.processName(pid)
try:
with open(self.pidFile, 'wt') as f:
f.write('{}\n{}'.format(pid, procname))
except OSError as e:
logger.error('Failed to write PID file %s: [%s] %s' %(e.filename, e.errno, e.strerror))
self.flockUnlock()
def startApplication(self):
"""
Called when the single instance starts to save it's pid
"""
pid = os.getpid()
procname = tools.processName(pid)
try:
with open(self.pidFile, 'wt') as f:
f.write('{}\n{}'.format(pid, procname))
except OSError as e:
logger.error('Failed to write PID file %s: [%s] %s' %
(e.filename, e.errno, e.strerror))
self.flockUnlock()
def test_existing_process_with_correct_procname(self):
"""
Test the check function with an existing process with correct process
name
"""
pid = self.createProcess()
procname = tools.processName(pid)
# create file with pid and process name
with open(self.file_name, "wt") as file_with_pid:
file_with_pid.write(str(pid) + "\n")
file_with_pid.write(procname)
# Execute test
self.assertFalse(self.inst.check())
self.assertTrue(self.inst.busy())
def check(self, autoExit=False):
"""
Check if the current application is already running
Args:
autoExit (bool): automatically call sys.exit if there is an other
instance running
Returns:
bool: ``True`` if this is the only application
instance
"""
#check if the pidfile exists
if not os.path.isfile(self.pidFile):
return True
self.pid, self.procname = self.readPidFile()
#check if the process with specified by pid exists
if 0 == self.pid:
return True
if not tools.processAlive(self.pid):
return True
#check if the process has the same procname
#check cmdline for backwards compatibility
if self.procname and \
self.procname != tools.processName(self.pid) and \
self.procname != tools.processCmdline(self.pid):
return True
if autoExit:
#exit the application
print("The application is already running !")
exit(
0
) #exit raise an exception so don't put it in a try/except block
return False
def check(self, autoExit = False):
"""
Check if the current application is already running
Args:
autoExit (bool): automatically call sys.exit if there is an other
instance running
Returns:
bool: ``True`` if this is the only application
instance
"""
#check if the pidfile exists
if not os.path.isfile(self.pidFile):
return True
self.pid, self.procname = self.readPidFile()
#check if the process with specified by pid exists
if 0 == self.pid:
return True
if not tools.processAlive(self.pid):
return True
#check if the process has the same procname
#check cmdline for backwards compatibility
if self.procname and \
self.procname != tools.processName(self.pid) and \
self.procname != tools.processCmdline(self.pid):
return True
if autoExit:
#exit the application
print("The application is already running !")
exit(0) #exit raise an exception so don't put it in a try/except block
return False
def test_processName(self):
pid = self.createProcess()
self.assertEqual(tools.processName(pid), generic.DUMMY[:15])
def test_processName(self):
pid = self.createProcess()
self.assertEqual(tools.processName(pid), generic.DUMMY[:15])
