3 from datetime import datetime, timedelta
7 ### more generic code for waiting for any number of things
8 ### within a given timeframe i.e. given some timeout/silent/period
9 ### takes in argument a list of tasks that are instances
10 ### of a CompleterTask subclass
12 def __init__ (self, tasks, verbose=True):
15 def run (self, timeout_timedelta, silent_timedelta, period=None):
16 begin = datetime.now()
17 timeout = begin+timeout_timedelta
18 timeout_minutes = timeout_timedelta.total_seconds()/60
19 graceout = datetime.now()+silent_timedelta
20 silent_minutes = silent_timedelta.total_seconds()/60
21 period_seconds=int(period.total_seconds())
23 utils.header("max timeout is %d minutes, silent for %d minutes (period is %s s)"%\
24 (timeout_minutes,silent_minutes,period_seconds))
29 success=task.run (silent=datetime.now() <= graceout)
30 if success: fine.append(task)
31 for task in fine: tasks.remove(task)
33 print "Completer duration = {}".format(int(datetime.now()-begin))
35 if datetime.now() > timeout:
37 task.failure_epilogue()
40 print '%ds..'%period_seconds,
41 time.sleep(period_seconds)
46 #################### CompleterTask
47 ### . run(silent) (return True or False)
48 ### silent is an input boolean indicating if we're within the silent period
49 ### . failure() (print a message)
51 ########## expectations (+ first arg self)
52 # failure() (to describe which went wrong once it's over)
60 def run (self, silent):
61 result=self.actual_run()
63 print '+' if result else '.',
66 print self.message(),"->","OK" if result else "KO"
68 def message (self): return "you-need-to-redefine-message"
69 def failure_epilogue (self): print "you-need-to-redefine-failure_epilogue"
72 class TaskTest (CompleterTask):
74 def __init__ (self,max):
76 self.counter=TaskTest.counter
78 self.delay=random.random()*max
79 self.fire=datetime.now()+timedelta(seconds=self.delay)
81 return datetime.now()>=self.fire
83 return "Task %d - delay was %d s"%(self.counter,self.delay)
85 def failure_epilogue (self): print "BOTTOM LINE: FAILURE with task (%s)"%self.counter
90 print "Usage: <command> number_tasks max_random timeout_s silent_s period_s"
92 [number,max,timeout,silent,period]= [ int(x) for x in sys.argv[1:]]
93 tasks = [ TaskTest(max) for i in range(number)]
94 success=Completer(tasks,verbose=True).run(timedelta(seconds=timeout),
95 timedelta(seconds=silent),
96 timedelta(seconds=period))
97 print "OVERALL",success
99 if __name__ == '__main__':