/
run.py
executable file
·100 lines (78 loc) · 2.79 KB
/
run.py
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#!/usr/bin/python
"""
TODO: add reporting to cloudwatch so we can monitor and alert on missed watering
"""
import time
import driver
import time
import datetime
import signal
import time
import sys
class SignalHandler:
exit_now = False
def __init__(self):
signal.signal(signal.SIGINT, self.exit_gracefully)
signal.signal(signal.SIGTERM, self.exit_gracefully)
return
def exit_gracefully(self,signum, frame):
self.exit_now = True
return
class ActiveInterval(object):
def __init__(self, on_time, off_time):
if off_time < on_time:
raise RuntimeError('off time must be after on time')
self.on_time = on_time
self.off_time = off_time
return
def is_active(self):
now = datetime.datetime.now().time()
is_active = False
if now > self.on_time and now < self.off_time:
is_active = True
return is_active
class SimpleScheduler(object):
def __init__(self):
self._driver = driver.get_driver()
self._zone_intervals = {}
return
def add(self, zone, on_time, off_time):
if zone not in [1,2,3,None]:
raise RuntimeError('Invalid zone')
interval = ActiveInterval(on_time, off_time)
if zone not in self._zone_intervals:
self._zone_intervals[zone] = []
self._zone_intervals[zone].append(interval)
return
def run(self):
signals = SignalHandler()
while True:
print '%s : Updating' % (datetime.datetime.now())
if signals.exit_now:
print 'Exiting from signal...'
break
for zone, intervals in self._zone_intervals.iteritems():
is_active = False
for interval in intervals:
if interval.is_active():
is_active = True
break
self._driver.set_zone(zone, is_active)
time.sleep(60)
return
def schedule_cycle(scheduler, start_time, duration, zones = [1,2,3]):
# Need to convert from time to datetime so we can do arthmetic with timedelta, then convert back to time object
phase_start_time = datetime.datetime.combine(datetime.date.today(), start_time)
for zone in zones:
phase_end_time = phase_start_time + duration
scheduler.add(zone, phase_start_time.time(), phase_end_time.time())
phase_start_time += duration
return
def main():
scheduler = SimpleScheduler()
schedule_cycle(scheduler, datetime.time(8,00), datetime.timedelta(minutes=15))
schedule_cycle(scheduler, datetime.time(13,00), datetime.timedelta(minutes=15))
scheduler.run()
return
if __name__ == '__main__':
main()