Add .alpha1 news flash

2021-07-31 16:29:44 -04:00 · 2021-07-31 16:29:44 -04:00 · 8a4a11b885
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+=========
+Changelog
+=========
+
+tractor 0.1.0a1 (2021-08-01)
+============================
+
+Features
+--------
+- Updated our uni-directional streaming API (`#206
+  <https://github.com/goodboy/tractor/pull/206>`) to require a context
+  manager style ``async Portal.stream_from(target) as stream:`` which
+  explicitly determines when to stop a stream in the calling (aka portal
+  opening) actor much like ``async_generator.aclosing()`` enforcement.
+
+- Improved the ``multiprocessing`` backend sub-actor reaping (`#208
+  <https://github.com/goodboy/tractor/pull/208>`) during actor nursery
+  exit, particularly during cancellation scenarios that previously might
+  result in hard to debug hangs.
+
+- Added initial bi-directional streaming support in `#219
+  <https://github.com/goodboy/tractor/pull/219>` with follow up debugger
+  improvements via `#220 <https://github.com/goodboy/tractor/pull/220>`
+  using the new ``tractor.Context`` cross-actor task syncing system.
+  The debugger upgrades add an edge triggered last-in-tty-lock semaphore
+  which allows the root process for a tree to avoid clobbering children
+  who have queued to acquire the ``pdb`` repl by waiting to cancel
+  sub-actors until the lock is known to be released **and** has no
+  pending waiters.
+
+
+Experiments and WIPs
+--------------------
+- Initial optional ``msgspec`` serialization support in `#214
+  <https://github.com/goodboy/tractor/pull/214>` which should hopefully
+  land by next release.
+
+- Improved "infect ``asyncio``" cross-loop task cancellation and error
+  propagation by vastly simplifying the approach.  We may end up just
+  going with a use of ``anyio`` in the medium term to avoid re-doing
+  work done by that group cross-event-loop portals.  See the
+  ``infect_asyncio`` for details.
+
+
+Improved Documentation
+----------------------
+- `Updated our readme <https://github.com/goodboy/tractor/pull/211>` to
+  include more (and better) `examples
+  <https://github.com/goodboy/tractor#run-a-func-in-a-process>` (with
+  matching multi-terminal process monitoring shell commands) as well as
+  added many more examples to the `repo set
+  <https://github.com/goodboy/tractor/tree/master/examples>`.
+
+- Added a readme `"actors under the hood" section
+  <https://github.com/goodboy/tractor#under-the-hood>` in an effort to
+  guard against suggestions for changing the API away from ``trio``'s
+  *tasks-as-functions* style.
+
+- Moved to using the `sphinx book theme
+  <https://sphinx-book-theme.readthedocs.io/en/latest/index.html>`
+  though it needs some heavy tweaking and doesn't seem to show our logo
+  on rtd :(
+
+
+Trivial/Internal Changes
+------------------------
+- Added a new ``TransportClosed`` internal exception/signal (`#215
+  <https://github.com/goodboy/tractor/pull/215>` for catching TCP
+  channel gentle closes instead of silently falling through the message
+  handler loop via an async generator ``return```.
+
+
+Deprecations and Removals
+-------------------------
+- Dropped support for invoking sync functions (`#205
+  <https://github.com/goodboy/tractor/pull/205>`) in other
+  actors/processes since you can always wrap a sync function from an
+  async one.  Users can instead consider using ``trio-parallel`` which
+  is a project specifically geared for purely synchronous calls in
+  sub-processes.
+
+- Deprecated our ``tractor.run()`` entrypoint `#197
+  <https://github.com/goodboy/tractor/pull/197>`; the runtime is now
+  either started implicitly in first actor nursery use or via an
+  explicit call to ``tractor.open_root_actor()``. Full removal of
+  ``tractor.run()`` will come by beta release.
+
+
+tractor 0.1.0a0 (2021-02-28)
+============================
+
+..
+    TODO: fill out more of the details of the initial feature set in some TLDR form
+
+Summary
+-------
+- ``trio`` based process spawner (using ``subprocess``)
+- initial multi-process debugging with ``pdb++``
+- windows support using both ``trio`` and ``multiprocessing`` spawners
+- "portal" api for cross-process, structured concurrent, (streaming) IPC