forked from goodboy/tractor
8ea0f08386
It's been a long time prepped and now finally implemented! Offer a `shield: bool` argument from our async `._debug` APIs: - `await tractor.pause(shield=True)`, - `await tractor.post_mortem(shield=True)` ^-These-^ can now be used inside cancelled `trio.CancelScope`s, something very handy when introspecting complex (distributed) system tear/shut-downs particularly under remote error or (inter-peer) cancellation conditions B) Thanks to previous prepping in a prior attempt and various patches from the rigorous rework of `.devx._debug` internals around typed msg specs, there ain't much that was needed! Impl deats - obvi passthrough `shield` from the public API endpoints (was already done from a prior attempt). - put ad-hoc internal `with trio.CancelScope(shield=shield):` around all checkpoints inside `._pause()` for both the root-process and subactor case branches. Add a fairly rigorous example, `examples/debugging/shielded_pause.py` with a wrapping `pexpect` test, `test_debugger.test_shield_pause()` and ensure it covers as many cases as i can think of offhand: - multiple `.pause()` entries in a loop despite parent scope cancellation in a subactor RPC task which itself spawns a sub-task. - a `trio.Nursery.parent_task` which raises, is handled and tries to enter and unshielded `.post_mortem()`, which of course internally raises `Cancelled` in a `._pause()` checkpoint, so we catch the `Cancelled` again and then debug the debugger's internal cancellation with specific checks for the particular raising checkpoint-LOC. - do ^- the latter -^ for both subactor and root cases to ensure we can debug `._pause()` itself when it tries to REPL engage from a cancelled task scope Bo |
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| .. | ||
| conftest.py | ||
| test_2way.py | ||
| test_advanced_faults.py | ||
| test_advanced_streaming.py | ||
| test_cancellation.py | ||
| test_caps_based_msging.py | ||
| test_child_manages_service_nursery.py | ||
| test_clustering.py | ||
| test_context_stream_semantics.py | ||
| test_debugger.py | ||
| test_discovery.py | ||
| test_docs_examples.py | ||
| test_infected_asyncio.py | ||
| test_inter_peer_cancellation.py | ||
| test_legacy_one_way_streaming.py | ||
| test_local.py | ||
| test_multi_program.py | ||
| test_pldrx_limiting.py | ||
| test_pubsub.py | ||
| test_resource_cache.py | ||
| test_rpc.py | ||
| test_runtime.py | ||
| test_shm.py | ||
| test_spawning.py | ||
| test_task_broadcasting.py | ||
| test_trioisms.py | ||