64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
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import asyncio
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import logging
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LOG = logging.getLogger('Emitter')
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class Emitter:
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"""
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This class is used to emit events to the registered emitters.
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"""
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emitters: list[callable] = []
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def add_emitter(self, emitter: callable):
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"""
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Add an emitter to the list of emitters.
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Args:
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emitter (function): The emitter function. The function must return a coroutine or None.
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"""
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self.emitters.append(emitter)
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async def added(self, dl: dict, **kwargs):
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await self.emit('added', dl, **kwargs)
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async def updated(self, dl: dict, **kwargs):
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await self.emit('updated', dl, **kwargs)
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async def completed(self, dl: dict, **kwargs):
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await self.emit('completed', dl, **kwargs)
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async def canceled(self, id: str, dl: dict = None, **kwargs):
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await self.emit('canceled', id, **kwargs)
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async def cleared(self, id: str, dl: dict = None, **kwargs):
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await self.emit('cleared', id, **kwargs)
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async def error(self, dl: dict, message: str, **kwargs):
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await self.emit('error', (dl, message), **kwargs)
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async def warning(self, message: str, **kwargs):
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await self.emit('error', message, **kwargs)
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async def emit(self, event: str, data, **kwargs):
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tasks = []
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for emitter in self.emitters:
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try:
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_ret = emitter(event, data, **kwargs)
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if _ret:
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if isinstance(_ret, list):
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tasks.extend(_ret)
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else:
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tasks.append(_ret)
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except Exception as e:
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LOG.error(f"Emitter '{emitter}' failed with error '{e}'.")
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if len(tasks) < 1:
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return
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try:
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await asyncio.wait_for(asyncio.gather(*tasks), timeout=60)
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except asyncio.TimeoutError:
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LOG.error(f"Timed out sending event '{event}'.")
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