Use `._entry` proto-ed "lifetime ops" in logging

As per a WIP scribbled out TODO in `._entry.nest_from_op()`, change
a bunch of "supervisor/lifetime mgmt ops" related log messages to
contain some supervisor-annotation "headers" in an effort to give
a terser "visual indication" of how some execution/scope/storage
primitive entity (like an actor/task/ctx/connection) is being operated
on (like, opening/started/closed/cancelled/erroring) from a "supervisor
action" POV.

Also tweak a bunch more emissions to lower levels to reduce noise around
normal inter-actor operations like process and IPC ctx supervision.

tractor/_context.py

@@ -933,13 +933,14 @@ class Context:
         self.cancel_called = True
 
         header: str = (
-            f'Cancelling ctx with peer from {side.upper()} side\n\n'
+            f'Cancelling ctx from {side.upper()}-side\n'
         )
         reminfo: str = (
             # ' =>\n'
-            f'Context.cancel() => {self.chan.uid}\n'
+            # f'Context.cancel() => {self.chan.uid}\n'
+            f'c)=> {self.chan.uid}\n'
             # f'{self.chan.uid}\n'
-            f'  |_ @{self.dst_maddr}\n'
+            f' |_ @{self.dst_maddr}\n'
             f'    >> {self.repr_rpc}\n'
             # f'    >> {self._nsf}() -> {codec}[dict]:\n\n'
             # TODO: pull msg-type from spec re #320
@@ -1267,6 +1268,12 @@ class Context:
 
     @property
     def maybe_error(self) -> BaseException|None:
+        '''
+        Return the (remote) error as outcome or `None`.
+
+        Remote errors take precedence over local ones.
+
+        '''
         le: BaseException|None = self._local_error
         re: RemoteActorError|ContextCancelled|None = self._remote_error
 
@@ -2182,9 +2189,16 @@ async def open_context_from_portal(
         # handled in the block above ^^^ !!
         # await _debug.pause()
         # log.cancel(
-        log.exception(
+        match scope_err:
-            f'{ctx.side}-side of `Context` terminated with '
+            case trio.Cancelled:
-            f'.outcome => {ctx.repr_outcome()}\n'
+                logmeth = log.cancel
+
+            # XXX explicitly report on any non-graceful-taskc cases
+            case _:
+                logmeth = log.exception
+
+        logmeth(
+            f'ctx {ctx.side!r}-side exited with {ctx.repr_outcome()}\n'
         )
 
         if debug_mode():

tractor/_entry.py

@@ -265,7 +265,7 @@ def _trio_main(
     except BaseException as err:
         logmeth = log.error
         exit_status: str = (
-            'Main actor task crashed during exit?\n'
+            'Main actor task exited due to crash?\n'
             +
             nest_from_op(
                 input_op='x)>',  # closed by error

tractor/_runtime.py

@@ -66,10 +66,11 @@ from trio import (
 )
 
 from tractor.msg import (
-    pretty_struct,
-    NamespacePath,
-    types as msgtypes,
     MsgType,
+    NamespacePath,
+    Stop,
+    pretty_struct,
+    types as msgtypes,
 )
 from ._ipc import Channel
 from ._context import (
@@ -545,7 +546,8 @@ class Actor:
             ):
                 log.cancel(
                     'Waiting on cancel request to peer\n'
-                    f'`Portal.cancel_actor()` => {chan.uid}\n'
+                    f'c)=>\n'
+                    f' |_{chan.uid}\n'
                 )
 
                 # XXX: this is a soft wait on the channel (and its
@@ -642,12 +644,14 @@ class Actor:
                         # and
                         an_exit_cs.cancelled_caught
                     ):
-                        log.warning(
+                        report: str = (
                             'Timed out waiting on local actor-nursery to exit?\n'
                             f'{local_nursery}\n'
-                            f' |_{pformat(local_nursery._children)}\n'
                         )
-                        # await _debug.pause()
+                        if children := local_nursery._children:
+                            report += f' |_{pformat(children)}\n'
+
+                        log.warning(report)
 
                 if disconnected:
                     # if the transport died and this actor is still
@@ -819,14 +823,17 @@ class Actor:
                 # side,
             )]
         except KeyError:
-            log.warning(
+            report: str = (
                 'Ignoring invalid IPC ctx msg!\n\n'
-                f'<= sender: {uid}\n\n'
+                f'<=? {uid}\n\n'
-                # XXX don't need right since it's always in msg?
+                f'  |_{pretty_struct.pformat(msg)}\n'
-                # f'=> cid: {cid}\n\n'
-
-                f'{pretty_struct.pformat(msg)}\n'
             )
+            match msg:
+                case Stop():
+                    log.runtime(report)
+                case _:
+                    log.warning(report)
+
             return
 
         # if isinstance(msg, MsgTypeError):
@@ -1338,10 +1345,11 @@ class Actor:
             return True
 
         log.cancel(
-            'Cancel request for RPC task\n\n'
+            'Rxed cancel request for RPC task\n'
-            f'<= Actor._cancel_task(): {requesting_uid}\n\n'
+            f'<=c) {requesting_uid}\n'
-            f'=> {ctx._task}\n'
+            f'  |_{ctx._task}\n'
-            f'  |_ >> {ctx.repr_rpc}\n'
+            f'    >> {ctx.repr_rpc}\n'
+            # f'=> {ctx._task}\n'
             # f'  >> Actor._cancel_task() => {ctx._task}\n'
             # f'  |_ {ctx._task}\n\n'
 

tractor/_spawn.py

@@ -246,8 +246,9 @@ async def hard_kill(
 
     '''
     log.cancel(
-        'Terminating sub-proc:\n'
+        'Terminating sub-proc\n'
-        f'|_{proc}\n'
+        f'>x)\n'
+        f' |_{proc}\n'
     )
     # NOTE: this timeout used to do nothing since we were shielding
     # the ``.wait()`` inside ``new_proc()`` which will pretty much
@@ -293,8 +294,8 @@ async def hard_kill(
         log.critical(
             # 'Well, the #ZOMBIE_LORD_IS_HERE# to collect\n'
             '#T-800 deployed to collect zombie B0\n'
-            f'|\n'
+            f'>x)\n'
-            f'|_{proc}\n'
+            f' |_{proc}\n'
         )
         proc.kill()
 
@@ -322,8 +323,9 @@ async def soft_kill(
     uid: tuple[str, str] = portal.channel.uid
     try:
         log.cancel(
-            'Soft killing sub-actor via `Portal.cancel_actor()`\n'
+            'Soft killing sub-actor via portal request\n'
-            f'|_{proc}\n'
+            f'c)> {portal.chan.uid}\n'
+            f' |_{proc}\n'
         )
         # wait on sub-proc to signal termination
         await wait_func(proc)
@@ -552,8 +554,9 @@ async def trio_proc(
             # cancel result waiter that may have been spawned in
             # tandem if not done already
             log.cancel(
-                'Cancelling existing result waiter task for '
+                'Cancelling portal result reaper task\n'
-                f'{subactor.uid}'
+                f'>c)\n'
+                f' |_{subactor.uid}\n'
             )
             nursery.cancel_scope.cancel()
 
@@ -562,7 +565,11 @@ async def trio_proc(
         # allowed! Do this **after** cancellation/teardown to avoid
         # killing the process too early.
         if proc:
-            log.cancel(f'Hard reap sequence starting for {subactor.uid}')
+            log.cancel(
+                f'Hard reap sequence starting for subactor\n'
+                f'>x)\n'
+                f' |_{subactor}@{subactor.uid}\n'
+            )
 
             with trio.CancelScope(shield=True):
                 # don't clobber an ongoing pdb