Python signal.SIGTERM() Examples

def kas(argv):
    """
        The main entry point of kas.
    """
    create_logger()

    parser = kas_get_argparser()
    args = parser.parse_args(argv)

    if args.debug:
        logging.getLogger().setLevel(logging.DEBUG)

    logging.info('%s %s started', os.path.basename(sys.argv[0]), __version__)

    loop = asyncio.get_event_loop()

    for sig in (signal.SIGINT, signal.SIGTERM):
        loop.add_signal_handler(sig, interruption)
    atexit.register(_atexit_handler)

    for plugin in getattr(kasplugin, 'plugins', []):
        if plugin().run(args):
            return

    parser.print_help() 

def terminate(self):
        try:
            os.kill(self.pid, signal.SIGTERM)
        except OSError, e:
            if e.errno == errno.ESRCH:
                return # process already killed by someone else
            if e.errno == errno.EPERM:
                # this can only happen if the original session was started as
                # a different user. e.g. if the broker has been restarted with
                # --demote=<some other user>. but don't worry too much about it
                # as sessions are eventually terminated anyway.
                print(
                    'WARNING: session with PID=%d not terminated because it '
                    'is owned by a different user. did you restart a broker '
                    'as a different user?' % self.pid
                )
                return
            raise e 

def run(self):
        """Option to calling manually calling start()/stop(). This will start
        the server and watch for signals to stop the server"""
        self.server.start()
        log.info(" ABCIServer started on port: {}".format(self.port))
        # wait for interrupt
        evt = Event()
        gevent.signal(signal.SIGQUIT, evt.set)
        gevent.signal(signal.SIGTERM, evt.set)
        gevent.signal(signal.SIGINT, evt.set)
        evt.wait()
        log.info("Shutting down server")
        self.server.stop()

    # TM will spawn off 3 connections: mempool, consensus, query
    # If an error happens in 1 it still leaves the others open which
    # means you don't have all the connections available to TM 

def test_err_in_fun(self):
            # Test that the original signal this process was hit with
            # is not returned in case fun raise an exception. Instead,
            # we're supposed to see retsig = 1.
            ret = pyrun(textwrap.dedent(
                """
                import os, signal, imp, sys
                mod = imp.load_source("mod", r"{}")

                def foo():
                    sys.stderr = os.devnull
                    1 / 0

                sig = signal.SIGTERM if os.name == 'posix' else \
                    signal.CTRL_C_EVENT
                mod.register_exit_fun(foo)
                os.kill(os.getpid(), sig)
                """.format(os.path.abspath(__file__), TESTFN)
            ))
            if POSIX:
                self.assertEqual(ret, 1)
                assert ret != signal.SIGTERM, strfsig(ret) 

def subprocess_terminate( proc ) :
	try:
		proc.terminate()
	except AttributeError:
		print " no terminate method to Popen.."
		try:
			import signal
			os.kill( proc.pid , signal.SIGTERM)
		except AttributeError:
			print "  no os.kill, using win32api.."
			try:
				import win32api
				PROCESS_TERMINATE = 1
				handle = win32api.OpenProcess( PROCESS_TERMINATE, False, proc.pid)
				win32api.TerminateProcess(handle,-1)
				win32api.CloseHandle(handle)
			except ImportError:
				print "  ERROR: could not terminate process." 

def stop(self):
        """
        Stop the shell
        """
        if self.is_running():
            try:
                os.kill(self._shell_pid, signal.SIGTERM)
            except OSError:
                pass

        start = time.time()
        while self.is_running() and (time.time() < (start + 0.2)):
            time.sleep(0.05)

        if self.is_running():
            utils.ConsoleLogger.log("Failed to stop shell process")
        else:
            utils.ConsoleLogger.log("Shell process stopped") 

def stop(self):

        pid = None

        if not os.path.exists(self.pidfile):

            logger.debug('pidfile not exist:' + self.pidfile)
            return

        try:
            pid = _read_file(self.pidfile)
            pid = int(pid)
            os.kill(pid, signal.SIGTERM)
            return

        except Exception as e:
            logger.warn('{e} while get and kill pid={pid}'.format(
                e=repr(e), pid=pid)) 

def _kill_ssh(self):
        if self.ssh_pid > 1:
            try:
                os.kill(self.ssh_pid, signal.SIGTERM)
                os.waitpid(self.ssh_pid, 0)
            except OSError, e:
                if e.errno not in [errno.ECHILD, errno.ESRCH]:
                    raise Exception('unhandled errno: %d' % e.errno)
            self.self_pid = -1
            try:
                os.close(self.ssh_fd)
            except OSError, e:
                if e.errno == errno.EBADF:
                    pass # already closed
                else:
                    print 'WHAT?', e
                    raise e 

def terminate(self):
        try:
            os.kill(self.pid, signal.SIGTERM)
        except OSError, e:
            if e.errno == errno.ESRCH:
                return # process already killed by someone else
            if e.errno == errno.EPERM:
                # this can only happen if the original session was started as
                # a different user. e.g. if the broker has been restarted with
                # --demote=<some other user>. but don't worry too much about it
                # as sessions are eventually terminated anyway.
                print(
                    'WARNING: session with PID=%d not terminated because it '
                    'is owned by a different user. did you restart a broker '
                    'as a different user?' % self.pid
                )
                return
            raise e 

def _kill_ssh(self):
        if self.ssh_pid > 1:
            try:
                os.kill(self.ssh_pid, signal.SIGTERM)
                os.waitpid(self.ssh_pid, 0)
            except OSError, e:
                if e.errno not in [errno.ECHILD, errno.ESRCH]:
                    raise Exception('unhandled errno: %d' % e.errno)
            self.self_pid = -1
            try:
                os.close(self.ssh_fd)
            except OSError, e:
                if e.errno == errno.EBADF:
                    pass # already closed
                else:
                    print 'WHAT?', e
                    raise e 

def idle(self, stop_signals=(SIGINT, SIGTERM, SIGABRT)):
        """
        Blocks until one of the signals are received and stops the updater

        Args:
            stop_signals: Iterable containing signals from the signal module
                that should be subscribed to. Updater.stop() will be called on
                receiving one of those signals. Defaults to (SIGINT, SIGTERM,
                SIGABRT)
        """
        for sig in stop_signals:
            signal(sig, self.signal_handler)

        self.is_idle = True

        while self.is_idle:
            sleep(1) 

def exit_test():
    global periodic_checker
    if periodic_checker:
        periodic_checker.stop()
    os.kill(rolld_proc.pid, signal.SIGTERM)
    os.kill(nginx_proc.pid, signal.SIGTERM)
    # IOLoop.instance().add_timeout(time.time() + 5, partial(sys.exit, 0))
    # check if we have zombies left
    try:
        lines = subprocess.check_output('ps auxw | grep python | grep app.py | grep -v grep', shell=True)
        print lines
        assert len(lines) == 0
    except subprocess.CalledProcessError as grepexc:
        # grep shouldnt find anything so exit code should be 1
        if grepexc.returncode == 1:
            pass
        else:
            raise
    # if everything is fine, just stop our ioloop now.
    IOLoop.current().stop() 

def monitor_retransmit():
    global proc

    with proc.stdout:
        for line in iter (proc.stdout.readline, b''):
            if stop_flag:
                break

            tokens = line.split()
            if len(tokens) < 5 or (tokens[2] == '-:-' and tokens[4] == '-:-') \
                    or tokens[0] == "TIME":
                continue

            key = tokens[1] + ':' + tokens[3] + ':6'

            mon_lock.acquire()
            if key not in mon_flows:
                print "updating mon_flows", key
                mon_flows.update ({key: 1})
            mon_lock.release()

    os.kill (proc.pid, signal.SIGTERM)
    proc.wait() # wait for the subprocess to exit
    proc = None 

def __init__(self, task_name, manager, config, timer, base_dir, backup_dir, **kwargs):
        self.task_name  = task_name
        self.manager    = manager
        self.config     = config
        self.timer      = timer
        self.base_dir   = base_dir
        self.backup_dir = backup_dir
        self.args       = kwargs
        self.verbose    = self.config.verbose

        self.runnning  = False
        self.stopped   = False
        self.completed = False
        self.exit_code = 255

        self.thread_count          = None
        self.cpu_count             = cpu_count()
        self.compression_method    = 'none'
        self.compression_supported = ['none']
        self.timer_name            = self.__class__.__name__

        signal(SIGINT, SIG_IGN)
        signal(SIGTERM, self.close) 

def test_sigkill(self):
        self.assert_everything_has_started()
        self.subp.kill()
        time.sleep(0.5)
        lines = sorted(self.get_lines())
        lines = self.hide_pids(lines)
        self.assertEqual([
            b'ERROR:cotyledon.tests.examples:heavy terminate',
            b'ERROR:cotyledon.tests.examples:heavy terminate',
            b'INFO:cotyledon:Caught SIGTERM signal, graceful exiting of '
            b'service heavy(0) [XXXX]',
            b'INFO:cotyledon:Caught SIGTERM signal, graceful exiting of '
            b'service heavy(1) [XXXX]',
            b'INFO:cotyledon:Caught SIGTERM signal, graceful exiting of '
            b'service light(0) [XXXX]',
            b'INFO:cotyledon:Parent process has died unexpectedly, '
            b'heavy(0) [XXXX] exiting',
            b'INFO:cotyledon:Parent process has died unexpectedly, '
            b'heavy(1) [XXXX] exiting',
            b'INFO:cotyledon:Parent process has died unexpectedly, '
            b'light(0) [XXXX] exiting',
        ], lines)
        self.assert_everything_is_dead(-9) 

def test_graceful_timeout_term(self):
        lines = self.get_lines(1)
        childpid = self.get_pid(lines[0])
        self.subp.terminate()
        time.sleep(2)
        self.assertEqual(0, self.subp.poll())
        self.assertRaises(OSError, os.kill, self.subp.pid, 0)
        self.assertRaises(OSError, os.kill, childpid, 0)
        lines = self.hide_pids(self.get_lines())
        self.assertNotIn('ERROR:cotyledon.tests.examples:time.sleep done',
                         lines)
        self.assertEqual([
            b'INFO:cotyledon:Caught SIGTERM signal, graceful exiting of '
            b'service buggy(0) [XXXX]',
            b'INFO:cotyledon:Graceful shutdown timeout (1) exceeded, '
            b'exiting buggy(0) [XXXX] now.',
            b'DEBUG:cotyledon:Shutdown finish'
        ], lines[-3:]) 

def test_graceful_timeout_kill(self):
        lines = self.get_lines(1)
        childpid = self.get_pid(lines[0])
        self.subp.kill()
        time.sleep(2)
        self.assertEqual(-9, self.subp.poll())
        self.assertRaises(OSError, os.kill, self.subp.pid, 0)
        self.assertRaises(OSError, os.kill, childpid, 0)
        lines = self.hide_pids(self.get_lines())
        self.assertNotIn('ERROR:cotyledon.tests.examples:time.sleep done',
                         lines)
        self.assertEqual([
            b'INFO:cotyledon:Parent process has died unexpectedly, buggy(0) '
            b'[XXXX] exiting',
            b'INFO:cotyledon:Caught SIGTERM signal, graceful exiting of '
            b'service buggy(0) [XXXX]',
            b'INFO:cotyledon:Graceful shutdown timeout (1) exceeded, '
            b'exiting buggy(0) [XXXX] now.',
        ], lines[-3:]) 

def test_proc_exited(self):
        waiter = asyncio.Future(loop=self.loop)
        transport, protocol = self.create_transport(waiter)
        transport._process_exited(6)
        self.loop.run_until_complete(waiter)

        self.assertEqual(transport.get_returncode(), 6)

        self.assertTrue(protocol.connection_made.called)
        self.assertTrue(protocol.process_exited.called)
        self.assertTrue(protocol.connection_lost.called)
        self.assertEqual(protocol.connection_lost.call_args[0], (None,))

        self.assertFalse(transport._closed)
        self.assertIsNone(transport._loop)
        self.assertIsNone(transport._proc)
        self.assertIsNone(transport._protocol)

        # methods must raise ProcessLookupError if the process exited
        self.assertRaises(ProcessLookupError,
                          transport.send_signal, signal.SIGTERM)
        self.assertRaises(ProcessLookupError, transport.terminate)
        self.assertRaises(ProcessLookupError, transport.kill)

        transport.close() 

def _child_process_handle_signal(self):
        # Setup child signal handlers differently

        def _sigterm(*args):
            self.signal_handler.clear()
            self.launcher.stop()

        def _sighup(*args):
            self.signal_handler.clear()
            raise SignalExit(signal.SIGHUP)

        self.signal_handler.clear()

        # Parent signals with SIGTERM when it wants us to go away.
        self.signal_handler.add_handler('SIGTERM', _sigterm)
        self.signal_handler.add_handler('SIGHUP', _sighup)
        self.signal_handler.add_handler('SIGINT', self._fast_exit) 

def stop(self):
        """Terminate child processes and wait on each."""
        self.running = False

        LOG.debug("Stop services.")
        for service in set(
                [wrap.service for wrap in self.children.values()]):
            service.stop()

        LOG.debug("Killing children.")
        for pid in self.children:
            try:
                os.kill(pid, signal.SIGTERM)
            except OSError as exc:
                if exc.errno != errno.ESRCH:
                    raise

        # Wait for children to die
        if self.children:
            LOG.info(_LI('Waiting on %d children to exit'), len(self.children))
            while self.children:
                self._wait_child() 

def send_signal(self, sig):
        """Send a signal to process pre-emptively checking whether
        PID has been reused (see signal module constants) .
        On Windows only SIGTERM is valid and is treated as an alias
        for kill().
        """
        if POSIX:
            self._send_signal(sig)
        else:  # pragma: no cover
            if sig == signal.SIGTERM:
                self._proc.kill()
            # py >= 2.7
            elif sig in (getattr(signal, "CTRL_C_EVENT", object()),
                         getattr(signal, "CTRL_BREAK_EVENT", object())):
                self._proc.send_signal(sig)
            else:
                raise ValueError(
                    "only SIGTERM, CTRL_C_EVENT and CTRL_BREAK_EVENT signals "
                    "are supported on Windows") 

def send_signal(self, sig):
        """Send a signal to process pre-emptively checking whether
        PID has been reused (see signal module constants) .
        On Windows only SIGTERM is valid and is treated as an alias
        for kill().
        """
        if POSIX:
            self._send_signal(sig)
        else:  # pragma: no cover
            if sig == signal.SIGTERM:
                self._proc.kill()
            # py >= 2.7
            elif sig in (getattr(signal, "CTRL_C_EVENT", object()),
                         getattr(signal, "CTRL_BREAK_EVENT", object())):
                self._proc.send_signal(sig)
            else:
                raise ValueError(
                    "only SIGTERM, CTRL_C_EVENT and CTRL_BREAK_EVENT signals "
                    "are supported on Windows") 

def kill(self, sig):
        '''Sends a Unix signal to the subprocess.
        
        Use constants from the :mod:`signal` module to specify which signal.
        '''
        if sys.platform == 'win32':
            if sig in [signal.SIGINT, signal.CTRL_C_EVENT]:
                sig = signal.CTRL_C_EVENT
            elif sig in [signal.SIGBREAK, signal.CTRL_BREAK_EVENT]:
                sig = signal.CTRL_BREAK_EVENT
            else:
                sig = signal.SIGTERM

        os.kill(self.proc.pid, sig) 

def ShutdownLogcatMonitor(base_dir, logger):
  """Attempts to shutdown adb_logcat_monitor and blocks while waiting."""
  try:
    monitor_pid_path = os.path.join(base_dir, 'LOGCAT_MONITOR_PID')
    with open(monitor_pid_path) as f:
      monitor_pid = int(f.readline())

    logger.info('Sending SIGTERM to %d', monitor_pid)
    os.kill(monitor_pid, signal.SIGTERM)
    i = 0
    while True:
      time.sleep(.2)
      if not os.path.exists(monitor_pid_path):
        return
      if not os.path.exists('/proc/%d' % monitor_pid):
        logger.warning('Monitor (pid %d) terminated uncleanly?', monitor_pid)
        return
      logger.info('Waiting for logcat process to terminate.')
      i += 1
      if i >= 10:
        logger.warning('Monitor pid did not terminate. Continuing anyway.')
        return

  except (ValueError, IOError, OSError):
    logger.exception('Error signaling logcat monitor - continuing') 

def stop(self):
        """
        Stop the daemon
        """
        # Get the pid from the pidfile
        try:
            pf = file(self.pidfile,'r')
            pid = int(pf.read().strip())
            pf.close()
        except IOError:
            pid = None
   
        if not pid:
            message = "pidfile %s does not exist. Daemon not running?\n"
            sys.stderr.write(message % self.pidfile)
            return # not an error in a restart

        # Try killing the daemon process       
        try:
            while 1:
                os.kill(pid, SIGTERM)
                time.sleep(0.1)
        except OSError, err:
            err = str(err)
            if err.find("No such process") > 0:
                if os.path.exists(self.pidfile):
                    os.remove(self.pidfile)
            else:
                print str(err)
                sys.exit(1) 

def stop(self):
        """
        Stop the daemon
        """
        # Get the pid from the pidfile
        try:
            pf = file(self.pidfile,'r')
            pid = int(pf.read().strip())
            pf.close()
        except IOError:
            pid = None
   
        if not pid:
            message = "pidfile %s does not exist. Daemon not running?\n"
            sys.stderr.write(message % self.pidfile)
            return # not an error in a restart

        # Try killing the daemon process       
        try:
            while 1:
                os.kill(pid, SIGTERM)
                time.sleep(0.1)
        except OSError, err:
            err = str(err)
            if err.find("No such process") > 0:
                if os.path.exists(self.pidfile):
                    os.remove(self.pidfile)
            else:
                print str(err)
                sys.exit(1) 

def stop(self):
        try:
            pf = file(self.pidfile,'r')
            pid = int(pf.read().strip())
            pf.close()
        except IOError:
            pid = None

        if not pid:
            message = "pidfile %s does not exist. Daemon not running?\n"
            sys.stderr.write(message % self.pidfile)
            return # not an error in a restart
      
        print("killing process with pid {0}".format(pid))
        try:
            while 1:
                os.kill(pid, SIGTERM)
                time.sleep(0.1)
        except OSError, err:
            err = str(err)
            if err.find("No such process") > 0:
                if os.path.exists(self.pidfile):
                    os.remove(self.pidfile)
            else:
                print str(err)
                sys.exit(1) 

def interruption():
    """
        Ignore SIGINT/SIGTERM in kas, let them be handled by our sub-processes
    """
    pass 

def test_EventAppPortConnectionSIGTERMNoPersist(self):
        self.localEvent = threading.Event()
        self.eventFlag = False

        self._nb_domMgr, domMgr = self.launchDomainManager("--nopersist", endpoint="giop:tcp::5679", dbURI=self._dbfile)
        self._nb_devMgr, devMgr = self.launchDeviceManager("/nodes/test_EventPortTestDevice_node/DeviceManager.dcd.xml")

        domainName = scatest.getTestDomainName()
        domMgr.installApplication("/waveforms/PortConnectFindByDomainFinderEvent/PortConnectFindByDomainFinderEvent.sad.xml")
        appFact = domMgr._get_applicationFactories()[0]
        app = appFact.create(appFact._get_name(), [], [])
        app.start()

        # Kill the domainMgr
        os.kill(self._nb_domMgr.pid, signal.SIGTERM)
        if not self.waitTermination(self._nb_domMgr, 5.0):
            self.fail("Domain Manager Failed to Die")

        # Restart the Domain Manager (which should restore the old channel)
        self._nb_domMgr, domMgr = self.launchDomainManager("--nopersist", endpoint="giop:tcp::5679", dbURI=self._dbfile)

        newappFact = domMgr._get_applicationFactories()
        self.assertEqual(len(newappFact), 0)

        apps = domMgr._get_applications()
        self.assertEqual(len(apps), 0)

        devMgrs = domMgr._get_deviceManagers()
        self.assertEqual(len(devMgrs), 0) 

def test_DeviceManagerDisappear(self):
        self._nb_domMgr, self._domMgr = self.launchDomainManager(endpoint="giop:tcp::5679", dbURI=self._dbfile)
        self._nb_devMgr, devMgr = self.launchDeviceManager("/nodes/test_BasicTestDevice_node/DeviceManager.dcd.xml")

        self.assertEqual(len(self._domMgr._get_applicationFactories()), 0)
        self.assertEqual(len(self._domMgr._get_applications()), 0)

        self._domMgr.installApplication("/waveforms/CommandWrapper/CommandWrapper.sad.xml")
        self.assertEqual(len(self._domMgr._get_applicationFactories()), 1)
        self.assertEqual(len(self._domMgr._get_applications()), 0)

        # Ensure the expected device is available
        self.assertNotEqual(devMgr, None)
        self.assertEqual(len(devMgr._get_registeredDevices()), 1)
        device = devMgr._get_registeredDevices()[0]

        # Kill the domainMgr and device manager
        os.kill(self._nb_domMgr.pid, signal.SIGKILL)
        if not self.waitTermination(self._nb_domMgr):
            self.fail("Domain Manager Failed to Die")

        os.kill(self._nb_devMgr.pid, signal.SIGTERM)
        if not self.waitTermination(self._nb_devMgr):
            self.fail("Device Manager Failed to Die")

        # Start the domainMgr again
        self._nb_domMgr, newDomMgr = self.launchDomainManager(endpoint="giop:tcp::5679", dbURI=self._dbfile)

        # Verify our client reference still is valid
        self.assertEqual(False, newDomMgr._non_existent())
        self.assertEqual(newDomMgr._get_identifier(),'DCE:5f52f645-110f-4142-8cc9-4d9316ddd958')
        self.assertEqual(self._domMgr._get_identifier(),'DCE:5f52f645-110f-4142-8cc9-4d9316ddd958')
        self.assertEqual(False, self._domMgr._non_existent())

        self.assertEqual(len(self._domMgr._get_deviceManagers()), 0)
        self.assertEqual(len(self._domMgr._get_applicationFactories()), 1) 

def test_ApplicationUsesDevice(self):
        self._nb_domMgr, self._domMgr = self.launchDomainManager(endpoint="giop:tcp::5679", dbURI=self._dbfile)
        self._nb_devMgr, devMgr = self.launchDeviceManager("/nodes/test_SADUsesDevice/DeviceManager.dcd.xml")

        self._domMgr.installApplication("/waveforms/SADUsesDeviceWave/SADUsesDeviceWaveExternalSimple.sad.xml")
        appFact = self._domMgr._get_applicationFactories()[0]
        app = appFact.create(appFact._get_name(), [], [])

        # Make sure that the allocation was made to the device
        prop = CF.DataType(id='simple_alloc', value=any.to_any(None))
        for dev in devMgr._get_registeredDevices():
            if dev._get_label() == 'SADUsesDevice_1':
                allocRes = dev.query([prop])
        self.assertEquals(allocRes[0].value.value(), 8)

        # Kill the domainMgr
        os.kill(self._nb_domMgr.pid, signal.SIGTERM)

        # TODO if SIGKILL is used (simulating a nodeBooter unexpected abort,
        # the IOR and the newly spawned domain manager do not work
        if not self.waitTermination(self._nb_domMgr):
            self.fail("Domain Manager Failed to Die")

        # Start the domainMgr again
        self._nb_domMgr, newDomMgr = self.launchDomainManager(endpoint="giop:tcp::5679", dbURI=self._dbfile)

        # Capacity still allocated to device
        prop = CF.DataType(id='simple_alloc', value=any.to_any(None))
        for dev in devMgr._get_registeredDevices():
            if dev._get_label() == 'SADUsesDevice_1':
                allocRes = dev.query([prop])
        self.assertEquals(allocRes[0].value.value(), 8)

        # Release app to free up device capacity to make sure usesdevicecapacties was properly restored
        newApp = newDomMgr._get_applications()[0]
        newApp.releaseObject()
        prop = CF.DataType(id='simple_alloc', value=any.to_any(None))
        for dev in devMgr._get_registeredDevices():
            if dev._get_label() == 'SADUsesDevice_1':
                allocRes = dev.query([prop])
        self.assertEquals(allocRes[0].value.value(), 10) 

def test_ApplicationStartOrder(self):
        self._nb_domMgr, self._domMgr = self.launchDomainManager(endpoint="giop:tcp::5679", dbURI=self._dbfile)
        self._nb_devMgr, devMgr = self.launchDeviceManager("/nodes/test_BasicTestDevice_node/DeviceManager.dcd.xml")

        self._domMgr.installApplication("/waveforms/CommandWrapperStartOrderTests/CommandWrapperWithOrder.sad.xml")
        appFact = self._domMgr._get_applicationFactories()[0]
        app = appFact.create(appFact._get_name(), [], [])
        app.start()
        comps = app._get_registeredComponents()
        for c in comps:
            self.assertEquals(c.componentObject._get_started(), True)

        # Kill the domainMgr
        os.kill(self._nb_domMgr.pid, signal.SIGTERM)

        # TODO if SIGKILL is used (simulating a nodeBooter unexpected abort,
        # the IOR and the newly spawned domain manager do not work
        if not self.waitTermination(self._nb_domMgr):
            self.fail("Domain Manager Failed to Die")

        # Start the domainMgr again
        self._nb_domMgr, newDomMgr = self.launchDomainManager(endpoint="giop:tcp::5679", dbURI=self._dbfile)

        # Components should all still be started
        for c in comps:
            self.assertEquals(c.componentObject._get_started(), True)

        # Stop application to make sure that start order Resource variables were recovered properly
        app = newDomMgr._get_applications()[0]
        app.stop()
        for c in comps:
            self.assertEquals(c.componentObject._get_started(), False)

        # Start components to make sure that start also works
        app.start()
        for c in comps:
            self.assertEquals(c.componentObject._get_started(), True) 

def test_RegisteredDomains(self):
        nb, domMgr = self.launchDomainManager(endpoint='giop:tcp::5679', dbURI=self._dbfile)

        testMgr1 = TestDomainManager('test1')
        domMgr.registerRemoteDomainManager(testMgr1._this())
        
        testMgr2 = TestDomainManager('test2')
        domMgr.registerRemoteDomainManager(testMgr2._this())

        remotes = [r._get_identifier() for r in domMgr._get_remoteDomainManagers()]
        self.assertEqual(len(remotes), 2)
        self.assert_(testMgr1._get_identifier() in remotes)
        self.assert_(testMgr2._get_identifier() in remotes)

        # Kill the DomainManager
        os.kill(nb.pid, signal.SIGTERM)
        if not self.waitTermination(nb):
            self.fail("Domain Manager Failed to Die")
        
        # Deactivate the second domain manager to check that its connection is
        # not restored
        poa = testMgr2._default_POA()
        oid = poa.servant_to_id(testMgr2)
        poa.deactivate_object(oid)

        # Re-launch and check that the remote domain is restored
        nb, domMgr = self.launchDomainManager(endpoint='giop:tcp::5679', dbURI=self._dbfile)
        remotes = domMgr._get_remoteDomainManagers()
        self.assertEqual(len(remotes), 1)
        self.assertEqual(remotes[0]._get_identifier(), testMgr1._get_identifier()) 

def test_Allocations(self):
        nb, domMgr = self.launchDomainManager(endpoint="giop:tcp::5679", dbURI=self._dbfile)
        self.launchDeviceManager("/nodes/test_BasicTestDevice_node/DeviceManager.dcd.xml")

        # Make a couple of different allocations
        allocMgr = domMgr._get_allocationMgr()
        memCapacityId = 'DCE:8dcef419-b440-4bcf-b893-cab79b6024fb'
        bogoMipsId = 'DCE:5636c210-0346-4df7-a5a3-8fd34c5540a8'
        nicCapacityId = 'DCE:4f9a57fc-8fb3-47f6-b779-3c2692f52cf9'
        allocations = { 'test1': {memCapacityId:2048, nicCapacityId:0.125},
                        'test2': {bogoMipsId:10000}}
        requests = [CF.AllocationManager.AllocationRequestType(k, properties.props_from_dict(v), [], [], 'test_Allocations') for k,v in allocations.iteritems()]
        results = allocMgr.allocate(requests)
        self.assertEqual(len(results), len(requests))

        # Save the allocation state prior to termination
        pre = dict((al.allocationID, al) for al in allocMgr.allocations([]))
        self.assertEqual(len(pre), len(results))

        # Kill the DomainManager
        os.kill(nb.pid, signal.SIGTERM)
        if not self.waitTermination(nb):
            self.fail("Domain Manager Failed to Die")

        # Re-launch and check that the allocation state remains the same;
        # implicitly tests that the AllocationManager reference is persistent
        self.launchDomainManager(endpoint='giop:tcp::5679', dbURI=self._dbfile)
        post = dict((al.allocationID, al) for al in allocMgr.allocations([]))
        self.assertEqual(len(pre), len(post))
        self.assertEqual(pre.keys(), post.keys())
        for allocId, status in pre.iteritems():
            self._compareAllocation(status, post[allocId]) 

def test_AllocationPersistence(self):
        self.launchDeviceManager("/nodes/test_multiDomain_exec/DeviceManager.dcd.xml", domainManager=self._domainManager_1)
        self.launchDeviceManager("/nodes/test_multiDomain_uses/DeviceManager.dcd.xml", domainManager=self._domainManager_2)
        self._domainManager_1.registerRemoteDomainManager(self._domainManager_2)

        allocMgr_1 = self._domainManager_1._get_allocationMgr()

        # Make a couple of allocation requests that we know will have to be
        # split across the two domains
        execcap = {'DCE:8dcef419-b440-4bcf-b893-cab79b6024fb':1000,
                   'DCE:4f9a57fc-8fb3-47f6-b779-3c2692f52cf9':50.0}
        usescap = {'DCE:8cad8ca5-c155-4d1d-ae40-e194aa1d855f':1}
        requests = [allocMgrHelpers.createRequest('exec', properties.props_from_dict(execcap)),
                    allocMgrHelpers.createRequest('uses', properties.props_from_dict(usescap))]
        results = dict((r.requestID, r) for r in allocMgr_1.allocate(requests))
        self.assertEqual(len(requests), len(results))
        usesId = results['uses'].allocationID
        execId = results['exec'].allocationID

        # Save the current allocation state
        pre = dict((al.allocationID, al) for al in allocMgr_1.allocations([]))

        # Kill the DomainManager
        os.kill(self._domainBooter_1.pid, signal.SIGTERM)
        if not self.waitTermination(self._domainBooter_1):
            self.fail("Domain Manager Failed to Die")

        # Re-launch and check that the allocation state remains the same
        self.launchDomainManager(endpoint='giop:tcp::5679', dbURI=self._dbfile)
        post = dict((al.allocationID, al) for al in allocMgr_1.allocations([]))
        self.assertEqual(len(pre), len(post))
        self.assertEqual(pre.keys(), post.keys())
        for allocId, status in pre.iteritems():
            self.assert_(allocMgrHelpers.compareAllocationStatus(status, post[allocId])) 

def terminateChildrenPidOnly(self, pid, signals=(signal.SIGINT, signal.SIGTERM)):
        ls = commands.getoutput('ls /proc')
        entries = ls.split('\n')
        for entry in entries:
            filename = '/proc/'+entry+'/status'
            try:
                fp = open(filename,'r')
                stuff = fp.readlines()
                fp.close()
            except:
                continue
            ret = ''
            for line in stuff:
                if 'PPid' in line:
                    ret=line
                    break
            if ret != '':
                parentPid = ret.split('\t')[-1][:-1]
                if parentPid == pid:
                    self.terminateChildrenPidOnly(entry, signals)
        filename = '/proc/'+pid+'/status'
        for sig in signals:
            try:
                os.kill(int(pid), sig)
            except:
                continue
            done = False
            attemptCount = 0
            while not done:
                try:
                    fp = open(filename,'r')
                    fp.close()
                    attemptCount += 1
                    if attemptCount == 10:
                        break
                    time.sleep(0.1)
                except:
                    done = True
            if not done:
                continue 

def terminateChildren(self, child, signals=(signal.SIGINT, signal.SIGTERM)):
        ls = commands.getoutput('ls /proc')
        entries = ls.split('\n')
        for entry in entries:
            filename = '/proc/'+entry+'/status'
            try:
                fp = open(filename,'r')
                stuff = fp.readlines()
            except:
                continue
            for line in stuff:
                if 'PPid' in line:
                    ret=line
                    break
            if ret != '':
                parentPid = int(ret.split('\t')[-1][:-1])
                if parentPid == child.pid:
                    self.terminateChildrenPidOnly(entry, signals)

        if child.poll() != None:
            return
        try:
            for sig in signals:
                os.kill(child.pid, sig)
                if self.waitTermination(child):
                    break
            child.wait()
        except OSError:
            pass 

def __terminate_process( process, signals=(_signal.SIGINT, _signal.SIGTERM, _signal.SIGKILL) ):
        if process and process.poll() != None:
           return
        try:
            for sig in signals:
                _os.kill(process.pid, sig)
                if __waitTermination(process):
                    break
            process.wait()
        except OSError, e:
            pass
        finally:
            pass 

def setUp(self):
        """
        Starts the component whose id matches the one stored in the IMPL_ID
        """
        
        signal.signal(signal.SIGINT, self.tearDown)
        signal.signal(signal.SIGTERM, self.tearDown)
        signal.signal(signal.SIGQUIT, self.tearDown)
        
        global SOFT_PKG
        global IMPL_ID
        self.comp_obj = None
        self.comp = None
        # Use the globals by default
        self.impl = IMPL_ID
        self.spd_file = SOFT_PKG
        self.spd = SPDParser.parse(SOFT_PKG)
        
        try:
            self.prf_file = self.spd.get_propertyfile().get_localfile().get_name()
            if (self.prf_file[0] != '/'):
                self.prf_file = os.path.join(os.path.dirname(self.spd_file), self.prf_file)
            self.prf = PRFParser.parse(self.prf_file)
        except:
            self.prf_file = None
            self.prf = None
        
        self.scd_file = self.spd.get_descriptor().get_localfile().get_name()
        if (self.scd_file[0] != '/'):
            self.scd_file = os.path.join(os.path.dirname(self.spd_file), self.scd_file)
        self.scd = SCDParser.parse(self.scd_file)

        # create a map between prop ids and names
        if self.prf:
            self._props = prop_helpers.getPropNameDict(self.prf) 

def __init__(self):
        helperBase.__init__(self)
        self.usesPortIORString = None
        self._providesPortDict = {}
        self._processes = {}
        self._STOP_SIGNALS = ((_signal.SIGINT, 1),
                              (_signal.SIGTERM, 5),
                              (_signal.SIGKILL, None)) 

def pause_job(self, job):
        # This signal will cause the refresh runner to update
        # the job to paused
        os.kill(job.pid, signal.SIGTERM)
        job.pid = None 

def test_server_signals(self):
        server = spoon.server.TCPSpoon(("0.0.0.0", 30783))
        calls = [
            call(signal.SIGUSR1, server.reload_handler),
            call(signal.SIGTERM, server.shutdown_handler)
        ]
        self.mock_signal.assert_has_calls(calls) 

def test_master_shutdown(self):
        shutdown = patch("spoon.server.TCPSpoon.shutdown").start()
        server = spoon.server.TCPSpork(("0.0.0.0", 30783))
        server.prefork = 2
        server.pids = [100, 101]
        server.shutdown()
        calls = [
            call(100, signal.SIGTERM),
            call(101, signal.SIGTERM),
        ]
        self.mock_kill.assert_has_calls(calls) 

def send_action(action, pidfile, logger=None):
    """Send a signal to an existing running daemon."""
    if logger is None:
        logger = logging
    if not os.path.exists(pidfile):
        logger.critical("No pid file available: %s", pidfile)
        return
    with open(pidfile) as pidf:
        pid = int(pidf.read())

    if action == "reload":
        os.kill(pid, signal.SIGUSR1)
    elif action == "stop":
        os.kill(pid, signal.SIGTERM) 

def shutdown_handler(self, *args, **kwargs):
        """Handler for the SIGTERM signal. This should be used to kill the
        daemon and ensure proper clean-up.
        """
        self.log.info("SIGTERM received. Shutting down.")
        t = threading.Thread(target=self.shutdown)
        t.start() 

def send_signal(self, sig):
            """Send a signal to the process
            """
            if sig == signal.SIGTERM:
                self.terminate()
            elif sig == signal.CTRL_C_EVENT:
                os.kill(self.pid, signal.CTRL_C_EVENT)
            elif sig == signal.CTRL_BREAK_EVENT:
                os.kill(self.pid, signal.CTRL_BREAK_EVENT)
            else:
                raise ValueError("Unsupported signal: {}".format(sig)) 

def terminate(self):
            """Terminate the process with SIGTERM
            """
            self.send_signal(signal.SIGTERM) 

def terminate(self):
            if self.returncode is None:
                try:
                    os.kill(self.pid, signal.SIGTERM)
                except OSError, e:
                    if self.wait(timeout=0.1) is None:
                        raise 

def wait(self, timeout=None):
            if self.returncode is None:
                if timeout is None:
                    msecs = _subprocess.INFINITE
                else:
                    msecs = max(0, int(timeout * 1000 + 0.5))

                res = _subprocess.WaitForSingleObject(int(self._handle), msecs)
                if res == _subprocess.WAIT_OBJECT_0:
                    code = _subprocess.GetExitCodeProcess(self._handle)
                    if code == TERMINATE:
                        code = -signal.SIGTERM
                    self.returncode = code

            return self.returncode 

def setup_docker_sigterm_handler():  # type: () -> None
    '''
    'manage.py runserver' is not set up to deal with a SIGTERM signal,
    and instead expects a Ctrl-C to come to its child process. So we'll
    add a SIGTERM handler here that finds all our children and gracefully
    shuts them down, which provides a quick graceful exit from Docker.
    '''

    def get_children():  # type: () -> Iterator[int]
        output = subprocess.check_output(
            "ps --ppid=%d -o pid | awk 'NR>1' | xargs echo" % os.getpid(),
            shell=True
        )
        return map(int, output.split())

    def handler(signum, frame):  # type: (int, Any) -> None
        for child_pid in get_children():
            try:
                os.kill(child_pid, signal.SIGTERM)
                os.waitpid(child_pid, 0)
            except OSError:
                pass
        sys.exit(0)

    info("Setting up Docker SIGTERM handler for quick, graceful exit.")
    signal.signal(signal.SIGTERM, handler)