47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
import time
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import tasks_pb2_grpc
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import tasks_pb2
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from google.protobuf import json_format
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class QueuesException(Exception):
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...
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class TasksHandlerMixin:
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def poll(self):
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while True:
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response: tasks_pb2.TakeResponse = self.stub.Take(tasks_pb2.TakeRequest(queue=self.queue_name))
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task = response.task
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if not task.id:
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time.sleep(0.2)
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continue
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try:
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payload = json_format.MessageToDict(task.payload)
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self.process(payload)
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except Exception as exc:
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print(f'Error processing message id={task.id}, payload={payload}, exc={exc}')
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continue
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try:
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self.stub.Finish(tasks_pb2.FinishRequest(id=task.id))
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except:
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print(f'Failed to finish task id={task.id}')
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@property
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def queue_name(self):
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raise NotImplemented
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def process(self, payload):
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raise NotImplemented
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def set_task(stub: tasks_pb2_grpc.TasksStub, queue_name: str, payload: dict, seconds_to_execute: int, delay: int|None = None):
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stub.Put(
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tasks_pb2.PutRequest(
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queue=queue_name,
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seconds_to_execute=seconds_to_execute,
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delay=delay,
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payload=payload
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)
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)
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