feat(tracing): add MUJINA_LOG filter variable#79
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Add MUJINA_LOG, a log filter for Mujina's own output. Interpret its
directives relative to Mujina's crate, overriding RUST_LOG and the
built-in defaults. Give RUST_LOG its standard Rust meaning: a
directive that names a crate adds to the built-in defaults, and a
bare level takes full control of the filter.
MUJINA_LOG=trace trace Mujina, nothing more
MUJINA_LOG=asic::bm13xx=trace module names as the log shows them
RUST_LOG=nusb=trace trace a dependency, defaults kept
RUST_LOG=trace trace everything, as stock Rust
Previously the filter appended a bare RUST_LOG level after the
defaults, where the per-crate default outranked it by specificity:
RUST_LOG=trace promoted third-party crates to trace but left Mujina
capped at info, exactly backwards from what a user asking for a
trace log wants.
Update the startup hint, environment help, and docs to recommend
MUJINA_LOG.
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yeah, confirmed this makes investigating logs much easier. i was using it while chasing down an issue around the power controller on a bitaxe gamma 602, and having targeted Mujina traces (for my case) without turning the rest of the world into |
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Add MUJINA_LOG, a log filter for Mujina's own output. Interpret its directives relative to Mujina's crate, overriding RUST_LOG and the built-in defaults. Give RUST_LOG its standard Rust meaning: a directive that names a crate adds to the built-in defaults, and a bare level takes full control of the filter.
Previously the filter appended a bare RUST_LOG level after the defaults, where the per-crate default outranked it by specificity: RUST_LOG=trace promoted third-party crates to trace but left Mujina capped at info, exactly backwards from what a user asking for a trace log wants.
Update the startup hint, environment help, and docs to recommend MUJINA_LOG.