Erik JohnstonandClaude Opus 4.8 1e537e4e46 Port the sentinel logcontext to Rust ...

`_Sentinel` and its `SENTINEL_CONTEXT` singleton — the root "no logcontext"
marker — are now a native pyclass owned by the Rust logcontext module, which
already owns the "current context" storage. Rust both defines the type and
creates the one instance lazily, so the `register_sentinel` bootstrap (Python
constructing the sentinel and pushing it into the Rust slot to dodge a circular
import) is gone: the module exports `SENTINEL_CONTEXT` directly.

Kept as a separate class from `LoggingContext` (the Null Object pattern, as
upstream has it): the sentinel is falsy, inert (all methods no-op), and
thread-agnostic, the opposite of an active thread-affine context. Merging would
scatter `is_sentinel` branches through `__bool__` and every accounting method.

Invariants preserved: `current_context() is SENTINEL_CONTEXT`, `bool()` is
False, `str()` is "sentinel", and `server_name` is
"unknown_server_from_sentinel_context" (read by the log filter). Verified via
95 trial tests + a Rust≡Python identity/bool/round-trip script; full lint clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JFbRtswu7rsHrttJFauUUb

2026-07-16 14:05:10 +00:00

..

benches

Implement the push rules for experimental MSC4306: Thread Subscriptions. (#18762)

2025-08-06 15:33:52 +01:00

src

Port the sentinel logcontext to Rust

2026-07-16 14:05:10 +00:00

build.rs

resolves #19403 Report the rust compiler version used in the prometheus metrics (#19643)

2026-04-03 11:21:23 +02:00

Cargo.toml

Make the logcontext switch native (getrusage via libc)

2026-07-16 13:27:17 +00:00