def _delay_start(cont_pid, start_engines, furl_file, reuse):
"""Wait for controller to create FURL files and the start the engines."""
if not reuse:
if os.path.isfile(furl_file):
os.unlink(furl_file)
log.msg('Waiting for controller to finish starting...')
d = wait_for_file(furl_file, delay=0.2, max_tries=50)
d.addCallback(lambda _: log.msg('Controller started'))
d.addCallback(lambda _: start_engines(cont_pid))
return d
def _delay_start(cont_pid, start_engines, furl_file, reuse):
"""Wait for controller to create FURL files and the start the engines."""
if not reuse:
if os.path.isfile(furl_file):
os.unlink(furl_file)
log.msg('Waiting for controller to finish starting...')
d = wait_for_file(furl_file, delay=0.2, max_tries=50)
d.addCallback(lambda _: log.msg('Controller started'))
d.addCallback(lambda _: start_engines(cont_pid))
return d
def test_delay(self):
filename = tempfile.mktemp()
def _create_file():
open(filename,'w').write('####')
dcall = reactor.callLater(0.5, _create_file)
d = wait_for_file(filename,delay=0.1)
d.addCallback(lambda r: self.assert_(r))
def _cancel_dcall(r):
if dcall.active():
dcall.cancel()
d.addCallback(_cancel_dcall)
return d
def test_timeout(self):
filename = tempfile.mktemp()
d = wait_for_file(filename,delay=0.1,max_tries=1)
d.addErrback(lambda f: self.assertRaises(FileTimeoutError,f.raiseException))
return d
