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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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class brcdBwSensor(PollingSensor): |
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def __init__(self, sensor_service, config=None, poll_interval=5): |
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super(brcdBwSensor, 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._bw_tracker = None |
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self._bsd = None |
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self._manage = None |
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self._minimum = 10 |
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self._headroom = 10 |
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self._roundup = 10 |
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self._track = 10 |
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self._warn = 10 |
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def setup(self): |
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self._bsd = Bsd(self._config, self._logger) |
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self._bw_tracker = None |
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def poll(self): |
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self._get_configs() |
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bandwidth = self._bsd.getBandwidth() |
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bw_tracker = self._get_bw_tracker() |
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if self._manage is not None: |
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self._manage_bandwidth(bw_tracker, bandwidth) |
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else: |
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bw_tracker = {} |
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self._monitor_bandwidth(bandwidth) |
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self._set_bw_tracker(bw_tracker) |
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def _get_configs(self): |
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self._logger.debug(self._config) |
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if "brcd_bw_minimum" in self._config and self._config["brcd_bw_minimum"] is not None: |
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self._minimum = int(self._config["brcd_bw_minimum"]) |
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if "brcd_bw_roundup" in self._config and self._config["brcd_bw_roundup"] is not None: |
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self._roundup = int(self._config["brcd_bw_roundup"]) |
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if "brcd_bw_headroom" in self._config and self._config["brcd_bw_headroom"] is not None: |
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self._headroom = int(self._config["brcd_bw_headroom"]) |
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if "brcd_bw_track" in self._config and self._config["brcd_bw_track"] is not None: |
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self._track = int(self._config["brcd_bw_track"]) |
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if "brcd_bw_warn" in self._config and self._config["brcd_bw_warn"] is not None: |
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self._warn = int(self._config["brcd_bw_warn"]) |
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if "brcd_bw_manage" in self._config and self._config["brcd_bw_manage"] is not None: |
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manage = str(self._config["brcd_bw_manage"]) |
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if manage.lower() == "all": |
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self._manage = ["__ALL__"] |
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else: |
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self._manage = manage.split(',') |
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def _manage_bandwidth(self, bw_tracker, bandwidth): |
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for instance in bandwidth.keys(): |
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instData = bandwidth[instance] |
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tag = instData["tag"] |
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if "__ALL__" in self._manage or instance in self._manage or tag in self._manage: |
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tracked = instData["current"] |
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tracked += self._roundup - (tracked % self._roundup) |
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if tracked < self._minimum: |
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tracked = self._minimum |
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if instance not in bw_tracker: |
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bw_tracker[instance] = instData |
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bw_tracker[instance]["tracking"] = [] |
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while len(bw_tracker[instance]["tracking"]) >= self._track: |
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bw_tracker[instance]["tracking"].pop(0) |
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bw_tracker[instance]["tracking"].append(tracked) |
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bw_tracker[instance]["current"] = instData["current"] |
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bw_tracker[instance]["peak"] = instData["peak"] |
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self._issue_update(instance, tracked, instData, bw_tracker, bandwidth) |
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else: |
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if instance in bw_tracker: |
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bw_tracker.pop(instance) |
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def _issue_update(self, instance, tracked, instData, bw_tracker, bandwidth): |
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average = sum(bw_tracker[instance]["tracking"]) / len(bw_tracker[instance]["tracking"]) |
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assign = average if tracked < average else tracked |
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assign = int(assign + self._headroom) |
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if assign != instData["assigned"]: |
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bw_tracker[instance]["assigned"] = assign |
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payload = {"action": "update", "instance": instance, "tag": instData["tag"], |
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"bandwidth": assign, "current": instData["current"], "average": average} |
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self.sensor_service.dispatch(trigger="vadc.bsd_bandwidth_event", payload=payload) |
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def _monitor_bandwidth(self, bandwidth): |
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for instance in bandwidth.keys(): |
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instData = bandwidth[instance] |
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tag = instData["tag"] |
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if instData["assigned"] - instData["current"] - self._warn <= 0: |
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payload = {"action": "alert", "instance": instance, "tag": tag, |
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"bandwidth": instData["assigned"], "current": instData["current"]} |
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self.sensor_service.dispatch(trigger="vadc.bsd_bandwidth_event", payload=payload) |
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def _get_bw_tracker(self): |
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if not self._bw_tracker and hasattr(self._sensor_service, 'get_value'): |
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bw_tracker = self._sensor_service.get_value(name='bw_tracker') |
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if bw_tracker is not None: |
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self._bw_tracker = json.loads(bw_tracker, encoding="utf-8") |
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else: |
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self._bw_tracker = {} |
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return self._bw_tracker |
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def _set_bw_tracker(self, bw_tracker): |
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self._bw_tracker = bw_tracker |
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if hasattr(self._sensor_service, 'set_value'): |
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self._sensor_service.set_value(name='bw_tracker', value=json.dumps(bw_tracker, |
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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
