/
WorkerHandler.py
47 lines (38 loc) · 1.66 KB
/
WorkerHandler.py
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import asyncio
from threading import Thread
class Status:
DONE = 'DONE'
UNDONE = 'UNDONE'
ERROR = 'ERROR'
class Worker(object):
def __init__(self, prepared_object):
self.prepared_object = prepared_object
self.method_call = self.is_async()
self.event_loop = None
def is_async(self) -> bool:
return asyncio.isfuture(getattr(self.prepared_object, 'logic')) or \
asyncio.iscoroutine(getattr(self.prepared_object, 'logic')) or \
asyncio.iscoroutinefunction(getattr(self.prepared_object, 'logic'))
def run(self):
# if .logic is async #
if self.method_call:
# maybe we should not start every
# coroutine in separate event loop ?
self.event_loop = asyncio.new_event_loop()
thread = Thread(target=self.runner(), args=())
thread.run()
def runner(self):
if self.event_loop and self.method_call:
self.event_loop.run_until_complete(getattr(self.prepared_object, "logic")())
else:
getattr(self.prepared_object, "logic")()
if self.prepared_object.status() is None:
print(f"Object: {self.prepared_object} does not have status. Changing it to DONE.")
self.prepared_object.work_status = Status.DONE
print(f"Object {self.prepared_object} done with status: {self.prepared_object.status()}")
# We need to gracefully stop event loop
# Because of threads can't handle this fd
# and through RuntimeError with fd = -1
if self.event_loop and self.method_call:
if not self.event_loop.is_running():
self.event_loop.close()