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This release brings support for a new version of `aiormq`, which is used as
a low-level driver for working with AMQP.
The release contains a huge number of changes in the internal structure of the
library, mainly related to type inheritance and abstract types, as well
as typehints checking via mypy.
The biggest change to the user API is the violation of the inheritance order,
due to the introduction of abstract types, so this release is a major one.
Changes
* There are a lot of changes in the structure of the library,
due to the widespread use of typing.
* `aio_pika.abc` module now contains all types and abstract class prototypes.
* Modern `aiormq~=6.1.1` used.
* Complete type checks coverage via mypy.
* The interface of `aio_pika`'s classes has undergone minimal changes,
but you should double-check your code before migrating, at least because
almost all types are now in `aio_pika.abc`. Module `aio_pika.types`
still exists, but will produce a `DeprecationWarning`.
* Default value for argument `weak` is changed to `False` in
`CallbackCollection.add(func, weak=False)`.
Known 6.x to 7.x migration issues
* `pamqp.specification` module didn't exist in `pamqp==3.0.1` so you have to
change it:
* `pamqp.commands` for AMPQ-RPC–relates classes
* `pamqp.base` for `Frame` class
* `pamqp.body` for `ContentBody` class
* `pamqp.commands` for `Basic`, `Channel`, `Confirm`, `Exchange`,
`Queue`, `Tx` classes.
* `pamqp.common` for `FieldArray`, `FieldTable`, `FieldValue` classes
* `pamqp.constants` for constants like `REPLY_SUCCESS`.
* `pamqp.header` for `ContentHeader` class.
* `pamqp.heartbeat` for `Heartbeat` class.
* Type definitions related to imports from `aio_pika` might throw warnings
like `'SomeType' is not declared in __all__ `. This is a normal situation,
since now it is necessary to import types from `aio_pika.abc`. In this
release, these are just warnings, but in the next major release, this will
stop working, so you should take care of changes in your code.
Just use `aio_pika.abc` in your imports.
The list of deprecated imports:
* `from aio_pika.message import ReturnCallback`
* `from aio_pika.patterns.rpc import RPCMessageType` - renamed to
`RPCMessageTypes`
* `import aio_pika.types` - module deprecated use `aio_pika.abc` instead
* `from aio_pika.connection import ConnectionType`