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from st2reactor.sensor.base import PollingSensor |
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from lib.vadc import Bsd |
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import json |
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6
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7
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class brcdSdSensor(PollingSensor): |
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def __init__(self, sensor_service, config=None, poll_interval=5): |
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super(brcdSdSensor, self).__init__(sensor_service=sensor_service, config=config, |
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poll_interval=poll_interval) |
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self._logger = self.sensor_service.get_logger(name=self.__class__.__name__) |
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self._stop = False |
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self._bsd = None |
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def setup(self): |
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self._bsd = Bsd(self._config, self._logger) |
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self._last_errors = None |
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def poll(self): |
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try: |
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errors = self._bsd.getErrors() |
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last_errors = self._get_last_errors() |
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self._set_last_errors(errors) |
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self._process_changes(errors, last_errors) |
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if last_errors and not errors: |
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payload = {"status": "all_clear", "errors": "ALL CLEAR", "error_level": "na"} |
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self.sensor_service.dispatch(trigger="vadc.bsd_failure_event", payload=payload) |
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except Exception as e: |
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payload = {"status": "sensor_fail", "errors": "BSD Sensor: {}: {}".format( |
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self._config["brcd_sd_host"], e), "error_level": "na"} |
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self.sensor_service.dispatch(trigger="vadc.bsd_failure_event", payload=payload) |
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def _process_changes(self, errors, last_errors): |
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for instance in errors: |
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if "traffic_health" in errors[instance]: |
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error_level = errors[instance]["traffic_health"]["error_level"] |
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else: |
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error_level = "unknown" |
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if instance in last_errors: |
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if errors[instance] != last_errors[instance]: |
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# This has changed |
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payload = {"status": "updated", "error_level": error_level, "errors": |
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json.dumps(errors[instance], encoding="utf-8")} |
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self.sensor_service.dispatch(trigger="vadc.bsd_failure_event", payload=payload) |
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else: |
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# No change |
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pass |
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else: |
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# New error |
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payload = {"status": "new", "error_level": error_level, "errors": |
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json.dumps(errors[instance], encoding="utf-8")} |
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self.sensor_service.dispatch(trigger="vadc.bsd_failure_event", payload=payload) |
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for instance in last_errors: |
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if instance not in errors: |
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# Recovered |
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payload = {"status": "resolved", "error_level": "ok", "errors": |
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json.dumps(last_errors[instance], encoding="utf-8")} |
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self.sensor_service.dispatch(trigger="vadc.bsd_failure_event", payload=payload) |
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def _get_last_errors(self): |
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if not self._last_errors and hasattr(self._sensor_service, 'get_value'): |
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last_errors = self._sensor_service.get_value(name='last_errors') |
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if last_errors is not None: |
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self._last_errors = json.loads(last_errors, encoding="utf-8") |
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else: |
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self._last_errors = {} |
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return self._last_errors |
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def _set_last_errors(self, last_errors): |
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self._last_errors = last_errors |
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if hasattr(self._sensor_service, 'set_value'): |
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self._sensor_service.set_value(name='last_errors', value=json.dumps(last_errors, |
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encoding="utf-8")) |
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def cleanup(self): |
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# This is called when the st2 system goes down. You can perform cleanup operations like |
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# closing the connections to external system here. |
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pass |
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def add_trigger(self, trigger): |
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# This method is called when trigger is created |
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pass |
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def update_trigger(self, trigger): |
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# This method is called when trigger is updated |
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pass |
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def remove_trigger(self, trigger): |
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# This method is called when trigger is deleted |
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pass |
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StackStorm /
st2contrib
