99 lines
2.9 KiB
Python
99 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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try:
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driver_ok = True
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except ImportError:
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driver_ok = False
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import logging
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from pyscada.ems.models import MeteringPoint, VirtualMeteringPoint
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from pyscada.models import BackgroundProcess
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from pyscada.utils.scheduler import Process
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logger = logging.getLogger(__name__)
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class Device:
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"""
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EMS Background class
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"""
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def __init__(self, device):
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self.device = device
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self._device_not_accessible = 0
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self.variables = {}
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def request_data(self):
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"""process the data that was added to pyscada db"""
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output = []
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return output
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class PreCalculationBackgroundTask(Process):
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def init_process(self):
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if hasattr(self, "mp_ids_to_calculate") or hasattr(
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self, "vmp_ids_to_calculate"
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):
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self.mp_to_calculate = []
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else:
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self.mp_to_calculate = [mp for mp in MeteringPoint.objects.all()]
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self.calculate_type = "mp"
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if hasattr(self, "mp_ids_to_calculate"):
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self.calculate_type = "mp"
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if self.mp_ids_to_calculate == "all":
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self.mp_to_calculate += [mp for mp in MeteringPoint.objects.all()]
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elif self.mp_ids_to_calculate == "none":
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pass
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else:
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self.mp_to_calculate += [
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mp
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for mp in MeteringPoint.objects.filter(
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pk__in=self.mp_ids_to_calculate
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)
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]
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elif hasattr(self, "vmp_ids_to_calculate"):
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self.calculate_type = "vmp"
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if self.vmp_ids_to_calculate == "all":
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self.mp_to_calculate += [
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mp for mp in VirtualMeteringPoint.objects.all()
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]
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elif self.vmp_ids_to_calculate == "none":
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pass
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else:
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self.mp_to_calculate += [
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mp
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for mp in VirtualMeteringPoint.objects.filter(
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pk__in=self.vmp_ids_to_calculate
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)
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]
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self.dt_set = 0.1
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return True
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def loop(self):
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if len(self.mp_to_calculate) == 0:
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self.next_message = "done"
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return 0, None # done
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if self.calculate_type == "vmp" and BackgroundProcess.objects.filter(
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process_class="pyscada.ems.daemon.PreCalculationBackgroundTask",
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label="update precalculated mp",
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done=False,
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):
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self.dt_set = 30
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self.next_message = "wait for running update mp processes to finish"
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return 1, None
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mp = self.mp_to_calculate.pop(0)
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self.dt_set = 0.1
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mp.update_calculated_energy_deltas()
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self.next_message = (
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f"Calculated {mp.name}, {len(self.mp_to_calculate)} to calculate"
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)
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return 1, None
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