def known_screens_for_broadcast(broadcast_id):
remote_id = _rget('remote_to_broadcast_id_%s' % (broadcast_id, ))
remote_info = _rget('remote_info_%s' % (remote_id, ))
devices_data = []
if remote_info:
for device_id in remote_info.get('devices', {}).keys():
# TODO expiration for known devices?
# For each device, get its current screen and the device name
devices_data.append({
'screen_id': str(_rget('device_to_screen_id_%s' % (device_id, ))),
'device_name': _rget('device_to_device_name_%s' % (device_id, )),
'known': True,
})
return devices_data
def _send_to_screen(screen_id, data):
print 'broadcasting to', screen_id, '\n\tdata: ', data
screen_channel = 'screen_channel_%s' % screen_id
redis_session.publish((screen_channel), data)
screen_queue = _rget('screen_message_queue_%s' % screen_channel) or []
screen_queue.append(data)
_rset('queue_%s' % screen_channel, screen_queue[:100])
def remove_from_broadcast(screen_id, broadcast_id):
broadcast_info = _rget('broadcast_info_%s' % broadcast_id)
screen_info = _rget('screen_info_%s' % screen_id)
try:
broadcast_info['screens'].pop(str(screen_id))
except KeyError:
pass
else:
_rset('broadcast_info_%s' % broadcast_id, broadcast_info)
try:
screen_info['broadcasts'].pop(str(broadcast_id))
except KeyError:
pass
else:
_rset('screen_info_%s' % screen_id, screen_info)
return {'broadcast_id': broadcast_id, 'screen_id': screen_id}
def add_to_broadcast(screen_id, broadcast_id):
broadcast_info = _rget('broadcast_info_%s' % broadcast_id)
screen_info = _rget('screen_info_%s' % screen_id)
start_time = time.time()
# Update start times for the broadcast and screen info
broadcast_info['screens'][str(screen_id)] = start_time
screen_info['broadcasts'][str(broadcast_id)] = start_time
# Create a record of the fact that this device has conencted
# to this creen
remote_id = _rget('remote_to_broadcast_id_%s' % (broadcast_id, ))
device_id = _rget('screen_to_device_id_%s' % (screen_id, ))
remote_info = _rget('remote_info_%s' % (remote_id, ))
if not remote_info:
remote_info = {'devices': {}}
remote_info['devices'][device_id] = start_time
_rset('screen_info_%s' % screen_id, screen_info)
_rset('remote_info_%s' % (remote_id, ), remote_info)
return _rset('broadcast_info_%s' % broadcast_id, broadcast_info)
def get_broadcast_pairing_info(broadcast_id):
return _rget('broadcast_pairing_info_%s' % broadcast_id)
def get_broadcast(broadcast_id):
return _rget('broadcast_info_%s' % broadcast_id)
def get_screen(screen_id):
return _rget('screen_info_%s' % screen_id)
def get_screen_id(device_id):
return _rget('device_to_screen_id_%s' % device_id)
def get_device_name(device_id):
return _rget('device_to_device_name_%s' % device_id)
def get_device_pairing_info(device_id):
return _rget('device_to_pairing_info_%s' % device_id)
