craftbeerpi4-pione/cbpi/api/step.py

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import asyncio
import logging
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from abc import abstractmethod
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from cbpi.api.base import CBPiBase
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__all__ = ["StepResult", "StepState", "StepMove", "CBPiStep"]
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from enum import Enum
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logging.basicConfig(format='%(asctime)s,%(msecs)d %(levelname)-8s [%(filename)s:%(lineno)d] %(message)s',
datefmt='%Y-%m-%d:%H:%M:%S',
level=logging.INFO)
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class StepResult(Enum):
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STOP = 1
NEXT = 2
DONE = 3
ERROR = 4
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class StepState(Enum):
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INITIAL = "I"
DONE = "D"
ACTIVE = "A"
ERROR = "E"
STOP = "S"
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class StepMove(Enum):
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UP = -1
DOWN = 1
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class CBPiStep(CBPiBase):
def __init__(self, cbpi, id, name, props, on_done) -> None:
self.name = name
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self.cbpi = cbpi
self.id = id
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self.timer = None
self._done_callback = on_done
self.props = props
self.cancel_reason: StepResult = None
self.summary = ""
self.task = None
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self.running: bool = False
self.logger = logging.getLogger(__name__)
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def _done(self, task):
if self._done_callback is not None:
try:
result = task.result()
self._done_callback(self, result)
except Exception as e:
self.logger.error(e)
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async def start(self):
self.logger.info("Start {}".format(self.name))
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self.running = True
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self.task = asyncio.create_task(self._run())
self.task.add_done_callback(self._done)
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async def next(self):
self.running = False
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self.cancel_reason = StepResult.NEXT
self.task.cancel()
await self.task
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async def stop(self):
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try:
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self.running = False
if self.task is not None and self.task.done() is False:
self.cancel_reason = StepResult.STOP
self.task.cancel()
await self.task
except Exception as e:
self.logger.error(e)
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async def reset(self):
pass
async def on_props_update(self, props):
self.props = {**self.props, **props}
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async def save_props(self):
await self.cbpi.step.save()
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async def push_update(self):
self.cbpi.step.push_udpate()
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async def on_start(self):
pass
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async def on_stop(self):
pass
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async def _run(self):
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try:
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await self.on_start()
await self.run()
self.cancel_reason = StepResult.DONE
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except asyncio.CancelledError as e:
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pass
finally:
await self.on_stop()
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return self.cancel_reason
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@abstractmethod
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async def run(self):
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pass
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def __str__(self):
return "name={} props={}, type={}".format(self.name, self.props, self.__class__.__name__)
class CBPiFermentationStep(CBPiStep):
def __init__(self, cbpi, fermenter, step, props, on_done) -> None:
self.fermenter = fermenter
super().__init__(cbpi, step.id, step.name, props, on_done)