async def send(self, item):
"""Handles the transmission of a single item from the pipeline.
Each send operation is run as a task, so that in case of multiple consumers, a stuck
consumer won't block the entire send loop.
:param item: The item to send.
:type item: Any
"""
for _ in range(self.retrys + 1):
with trio.move_on_after(self.timeout):
try:
await self.send_channel.send(item)
except trio.BrokenResourceError:
self.closed = True
return
await trio.sleep(0)
raise trio.BusyResourceError('Unable to send item.')
def __enter__(self):
if self._held:
raise trio.BusyResourceError(self._msg)
else:
self._held = True