v0.14.0

Frequenz Channels Release Notes

Summary

The main change in this release is the revamp of exception handling in general. New exceptions were created and send() now raises an exception too when it fails.

Hopefully they are now used much more uniformly across the whole library.

Upgrading

• The Sender.send() method now raises a SenderError instead of returning False. The SenderError will typically have a ChannelClosedError and the underlying reason as a chained exception.

• The Receiver.ready() method (and related receive() and __anext__ when used as an async iterator) now raises a ReceiverError and in particular a ReceiverStoppedError when the receiver has no more messages to receive.

  Receiver.consume() doesn't raise any exceptions.

  Receivers raising EOFError now raise ReceiverInvalidatedError instead.

• For channels which senders raise an error when the channel is closed or which receivers stop receiving when the channel is closed, the SenderError and ReceiverStoppedError are chained with a __cause__ that is a ChannelClosedError with the channel that was closed.

• ChannelClosedError now requires the argument channel (before it was optional).

• Now exceptions are not raised in Receiver.ready() but in Receiver.consume() (receive() or the async iterator anext).

New Features

• New exceptions were added:

  • Error: A base exception from which all exceptions from this library inherit.

  • SendError: Raised for errors when sending messages.

  • ReceiverError: Raised for errors when receiving messages.

  • ReceiverClosedError: Raised when a receiver don't have more messages to receive.

  • ReceiverInvalidatedError: Raised when a receiver was invalidated (for example it was converted into a Peekable).

What's Changed

• Clean release notes by @ela-kotulska-frequenz in #69
• Fix build badge by @leandro-lucarella-frequenz in #71
• Improve and add exceptions by @leandro-lucarella-frequenz in #61
• Make assert msg grammatically correct and less ambiguous by @mathias-baumann-frequenz in #74
• Finish release notes for v0.14.0 by @leandro-lucarella-frequenz in #80

New Contributors

• @mathias-baumann-frequenz made their first contribution in #74

Full Changelog: v0.13.0...v0.14.0