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# This program plays a "little" sound when the door
# is opened. This is helpful e.g. when sitting back
# in the smokers lounge but wanting the door to be
# unlocked.
import subprocess
import os
import urllib2
import json
import sys
import time
if __name__ == '__main__':
workdir = os.path.realpath(os.path.dirname(__file__))
was_closed = None # Only react to changes
last_ref = None
while True:
time.sleep(1)
try:
r = None
req_url = 'http://beaglebone.local.sublab.org/longpoll'
if last_ref is not None:
req_url += '?' + last_ref
r = urllib2.urlopen(req_url, timeout=120)
buf = r.read()
if not buf.strip():
continue
data = json.loads(buf)
except Exception:
sys.excepthook(*sys.exc_info())
last_ref = None
continue
finally:
if r is not None:
r.close()
last_ref = data['ref']
data = data['data']
closed = data['door.left']['value']
if was_closed is not None:
if was_closed and not closed:
print "Door has been opened!"
subprocess.call(['paplay', '--volume=32661', os.path.join(workdir, 'doorwatch.wav')])
if not was_closed and closed:
print "Door has been closed."
was_closed = closed
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