def start(self):
'''
Iniatilizes the server. Any code meant to be run at init should be here.
'''
if not self.sseRunning:
self.sseRunning = True
self.sampler = samplers.Periodic(self.ssePeriod)
self._running = True
def sampling_method(self):
self.sampling_method = self.variable_config[0]['sampling']['type']
if self.sampling_method == 'PeriodicSampler':
#self.first_sample = float(self.general_config['PeriodicSampler']['first_sampling'])
self.period = float(
self.general_config['PeriodicSampler']['period'])
self.s = samplers.Samplers.Signal()
self.sampler = samplers.Periodic(self.period, self.s)
elif self.sampling_method == 'PeriodicSoD':
#self.first_sample = float(self.general_config['PeriodicSendOnDelta']['first_sampling'])
self.period = float(
self.general_config['PeriodicSendOnDelta']['period'])
#self.s = samplers.Signal()
self.s = samplers.Samplers.Signal()
self.threshold = float(
self.variable_config[0]['sampling']['params']['delta'])
#self.sampler = samplers.SoDsampler(self.first_sample, self.period, self.s, self.threshold)
self.sampler = samplers.Samplers.PeriodicSoD(
self.period, self.s, self.threshold)
else:
print('sampling method dont found')
def nextSample(self):
'''
Retrieve the next periodic update
'''
# TO DO: Remove this code and start when the first client arrives
if not self.sseRunning:
self.sseRunning = True
self.sampler = samplers.Periodic(self.ssePeriod)
while self.sseRunning:
self.sampler.wait()
try:
self.preGetValuesToNotify()
toReturn = self.getValuesToNotify()
self.postGetValuesToNotify()
except:
toReturn = 'ERROR'
response = {
"result": toReturn
}
event = 'periodiclabdata'
id = round(self.sampler.time * 1000)
data = ujson.dumps(response)
yield 'event: %s\nid: %s\ndata: %s\n\n' % (event, id, data)