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from st2reactor.sensor.base import Sensor |
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from signalr import Connection |
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__all__ = [ |
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'SignalRHubSensor' |
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] |
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class SignalRHubSensor(Sensor): |
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def __init__(self, sensor_service, config=None): |
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super(SignalRHubSensor, self).__init__(sensor_service=sensor_service, |
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config=config) |
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self._logger = self._sensor_service.get_logger(__name__) |
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self.url = config['hub_url'] |
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self.hub_name = config['hub_name'] |
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self._trigger_ref = 'signalr.message_received' |
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self._hub = None |
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self.connection = None |
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self.session = None |
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def setup(self): |
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self.connection = Connection(self.url, self.session) |
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# start a connection |
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self.connection.start() |
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# add a handler to process notifications to the connection |
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self.connection.handlers += \ |
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lambda data: self._logger.debug( |
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'Connection: new notification - %s' % data) |
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# get hub |
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self._hub = self.connection.hub(self.hub_name) |
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def message_received(self, message): |
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self._logger.debug('Connection: new notification.' % message) |
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self._sensor_service.dispatch(trigger=self._trigger_ref, |
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payload={message: message}) |
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def run(self): |
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self._hub.client.on('message_received', |
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SignalRHubSensor.message_received) |
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def cleanup(self): |
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# do not receive new messages |
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self._hub.client.off('message_received', self.message_received) |
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self.connection.close() |
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StackStorm /
st2contrib
