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685 Commits (dc17e51bc52c9557200c0b67628174cdf8d4cdc3)

Author SHA1 Message Date
Tyler Goodlet dc17e51bc5 Catch and delay errors in the root if debugger is active 2021-06-30 19:42:49 -04:00
Tyler Goodlet a7abfdd5e2 Don't shield on root cancel it can causes hangs 2021-06-30 19:42:49 -04:00
Tyler Goodlet fa785353da Experiment: only disable SIGINT handling in children 2021-06-30 19:42:49 -04:00
Tyler Goodlet 40fcc2bd68 Don't kill root's immediate children when in debug 
If the root calls `trio.Process.kill()` on immediate child proc teardown
when the child is using pdb, we can get stdstreams clobbering that
results in a pdb++ repl where the user can't see what's been typed. Not
killing such children on cancellation / error seems to resolve this
issue whilst still giving reliable termination. For now, code that
special path until a time it becomes a problem for ensuring zombie
reaps.
 2021-06-30 19:42:49 -04:00
Tyler Goodlet 8bb2ab117f Add debug example that causes pdb stdin clobbering 2021-06-30 19:42:49 -04:00
Tyler Goodlet 1e13b4afb7 Set stream "end of channel" after shielded check! 
Another face palm that was causing serious issues for code that is using
the `.shielded` feature..

Add a bunch more detailed comments for all this subtlety and hopefully
get it right once and for all. Also aggregated the `trio` errors that
should trigger closure inside `.aclose()`, hopefully that's right too.
 2021-06-14 16:37:47 -04:00
Tyler Goodlet 715dc9afc6 Don't clobber msg loop mem chan on rx stream close 
Revert this change since it really is poking at internals and doesn't
make a lot of sense. If the context is going to be cancelled then the
msg loop will tear down the feed memory channel when ready, we don't
need to be clobbering it and confusing the runtime machinery lol.
 2021-06-14 14:01:57 -04:00
Tyler Goodlet 6c039f7581 Modernize streaming tests 2021-06-14 09:25:21 -04:00
Tyler Goodlet af94ca9b6a Speedup the dynamic pubsub test 2021-06-14 09:25:21 -04:00
Tyler Goodlet db1e3dc353 Add detailed ``@tractor.context`` cancellation/termination tests 2021-06-14 09:25:21 -04:00
Tyler Goodlet ec8743ebc3 Drop trailing comma 2021-06-14 09:25:21 -04:00
Tyler Goodlet b95c6efbe9 Adjustments for non-frozen context dataclass change 2021-06-14 09:25:21 -04:00
Tyler Goodlet 3988a24e57 Wait for debugger lock task context termination 2021-06-14 09:25:21 -04:00
Tyler Goodlet 2e71914cb7 Fix exception typing 2021-06-14 09:25:21 -04:00
Tyler Goodlet 00c06a00ae Explicitly formalize context/streaming teardown 
Add clear teardown semantics for `Context` such that the remote side
cancellation propagation happens only on error or if client code
explicitly requests it (either by exit flag to `Portal.open_context()`
or by manually calling `Context.cancel()`).  Add `Context.result()`
to wait on and capture the final result from a remote context function;
any lingering msg sequence will be consumed/discarded.

Changes in order to make this possible:
- pass the runtime msg loop's feeder receive channel in to the context
  on the calling (portal opening) side such that a final 'return' msg
  can be waited upon using `Context.result()` which delivers the final
  return value from the callee side `@tractor.context` async function.
- always await a final result from the target context function in
  `Portal.open_context()`'s `__aexit__()` if the context has not
  been (requested to be) cancelled by client code on block exit.
- add an internal `Context._cancel_called` for context "cancel
  requested" tracking (much like `trio`'s cancel scope).
- allow flagging a stream as terminated using an internal
  `._eoc` flag which will mark the stream as stopped for iteration.
- drop `StopAsyncIteration` catching in `.receive()`; it does
  nothing.
 2021-06-14 09:25:21 -04:00
Tyler Goodlet 09a567c857 Specially raise a `ContextCancelled` for a task-context rpc 2021-06-14 09:25:21 -04:00
Tyler Goodlet d7ab01dc20 Expose streaming components at top level 2021-06-14 09:25:21 -04:00
Tyler Goodlet 4ed38281b3 Add a specially handled `ContextCancelled` error 2021-06-14 09:25:21 -04:00
Tyler Goodlet 25c159961b Add a multi-task streaming test 2021-06-14 09:25:21 -04:00
Tyler Goodlet 8f25f2d2fa Avoid mutate on iterate race 2021-06-14 09:25:21 -04:00
Tyler Goodlet 8297e765c1 Only close recv chan if we get a ref 2021-06-14 09:25:21 -04:00
Tyler Goodlet 0090a57681 Add error case 2021-06-14 09:25:21 -04:00
Tyler Goodlet 582eae699a Support no arg to `Context.started()` like trio 2021-06-14 09:25:21 -04:00
Tyler Goodlet b0bcb430bf Fix up var naming and typing 2021-06-14 09:25:21 -04:00
Tyler Goodlet 7eb76e8d97 Only send stop msg if not received from far end 2021-06-14 09:25:21 -04:00
Tyler Goodlet 55bea3ca17 Expose msg stream types at top level 2021-06-14 09:25:21 -04:00
Tyler Goodlet e4216b0691 Add dynamic pubsub test using new bidir stream apis 2021-06-14 09:25:21 -04:00
Tyler Goodlet f0ceb9a811 Use context for remote debugger locking 
A context is the natural fit (vs. a receive stream) for locking the root
proc's tty usage via it's `.started()` sync point. Simplify the
`_breakpoin()` routine to be a simple async func instead of all this
"returning a coroutine" stuff from before we decided that
`tractor.breakpoint()` must be async. Use `runtime` level for locking
logging making it easier to trace.
 2021-06-14 09:25:21 -04:00
Tyler Goodlet 9793851134 Be more pedantic with error handling 2021-06-14 09:25:21 -04:00
Tyler Goodlet 8cbe519d41 Fix typing 2021-06-14 09:25:21 -04:00
Tyler Goodlet 613e613b4c Parametrize with async for style tests 2021-06-14 09:25:21 -04:00
Tyler Goodlet 5ff5e7a6ef Support passing `shield` at stream contruction 2021-06-14 09:25:21 -04:00
Tyler Goodlet a166a62b31 Add basic test set 2021-06-14 09:25:21 -04:00
Tyler Goodlet 265120afd9 Cancel scope on stream consumer completion 2021-06-14 09:25:21 -04:00
Tyler Goodlet ae6aa75bcd Expose `@context` decorator at top level 2021-06-14 09:25:21 -04:00
Tyler Goodlet 0027115589 Add initial bi-directional streaming 
This mostly adds the api described in
https://github.com/goodboy/tractor/issues/53#issuecomment-806258798

The first draft summary:
- formalize bidir steaming using the `trio.Channel` style interface
  which we derive as a `MsgStream` type.
- add `Portal.open_context()` which provides a `trio.Nursery.start()`
  remote task invocation style for setting up and tearing down tasks
  contexts in remote actors.
- add a distinct `'started'` message to the ipc protocol to facilitate
  `Context.start()` with a first return value.
- for our `ReceiveMsgStream` type, don't cancel the remote task in
  `.aclose()`; this is now done explicitly by the surrounding `Context`
   usage: `Context.cancel()`.
- streams in either direction still use a `'yield'` message keeping the
  proto mostly symmetric without having to worry about which side is the
  caller / portal opener.
- subtlety: only allow sending a `'stop'` message during a 2-way
  streaming context from `ReceiveStream.aclose()`, detailed comment
  with explanation is included.

Relates to #53
 2021-06-14 09:25:21 -04:00
Tyler Goodlet 44d7988204 New docs theme hotfix 2021-06-14 08:10:59 -04:00
goodboy e98302212a
Merge pull request #211 from goodboy/new_docs_polish 
New docs theme, readme actors rant.
 2021-06-14 07:33:02 -04:00
Tyler Goodlet 0301d105dd Better rant flow as per suggestions 2021-06-14 06:41:10 -04:00
Tyler Goodlet 4ee7db338d Fill out the rant a bit more 2021-06-14 06:31:16 -04:00
Tyler Goodlet 558d546c8f Bump readme for #210 2021-06-14 06:31:16 -04:00
Tyler Goodlet 5528a4eb45 Attempt configuring sphinx-book-theme 2021-06-14 06:31:16 -04:00
Tyler Goodlet fb23a9d8d4 Try out sphinx-book-theme 2021-06-14 06:31:16 -04:00
goodboy f48548ab94
Merge pull request #197 from goodboy/drop_run 
Drop run
 2021-05-07 12:02:23 -04:00
Tyler Goodlet 73e123bac7 Fix line length 2021-05-07 11:21:40 -04:00
Tyler Goodlet 2b4cf59ee1 Drop sleep 2021-05-07 11:21:40 -04:00
Tyler Goodlet 0551756e22 Use trio.run() in windows tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet 5ca963148e Disable leftover debug mode 2021-05-07 11:21:40 -04:00
Tyler Goodlet 4798d3b5db Drop lingering rpc_module_paths refs 2021-05-07 11:21:40 -04:00
Tyler Goodlet 247483ee93 Drop run and rpc_module_paths from streaming tests 2021-05-07 11:21:40 -04:00