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https://github.com/tokio-rs/tracing.git
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62e0cc0a03
* subscriber: add less-verbose configuration APIs Signed-off-by: Eliza Weisman <eliza@buoyant.io> * even nicer easymode Signed-off-by: Eliza Weisman <eliza@buoyant.io> * wip## Motivation Users have said fairly frequently that configuring new subscribers in an application is unnecessarily verbose and confusing. We should try to make this nicer, especially as it's a common "on ramp" for new `tracing` users. ## Solution This branch adds new APIs, inspired by `tonic` and `warp`, that should make setting up a subscriber a little less verbose. This includes: - Many modules in `tracing-subscriber` now expose free functions that construct default instances of various types. This makes configuring subscribers using these types more concise, a la `warp`. - An extension trait for adding `.set_default`, `.init`, and `.try_init` methods to subscribers. This generalizes the similar functions on `fmt`'s `SubscriberBuilder` to work with other subscribers. All the old APIs are still left as they were previously. The new APIs just provide shorthand for them. Signed-off-by: Eliza Weisman <eliza@buoyant.io>
37 lines
874 B
Rust
37 lines
874 B
Rust
mod support;
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use self::support::*;
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use tracing_subscriber::prelude::*;
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#[test]
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fn init_ext_works() {
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let (subscriber, finished) = subscriber::mock()
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.event(
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event::mock()
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.at_level(tracing::Level::INFO)
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.with_target("init_works"),
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)
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.done()
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.run_with_handle();
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let _guard = subscriber.set_default();
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tracing::info!(target: "init_works", "it worked!");
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finished.assert_finished();
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}
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#[test]
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fn builders_are_init_ext() {
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tracing_subscriber::fmt().set_default();
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let _ = tracing_subscriber::fmt()
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.with_target(false)
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.compact()
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.try_init();
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}
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#[test]
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fn layered_is_init_ext() {
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tracing_subscriber::registry()
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.with(tracing_subscriber::fmt::layer())
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.with(tracing_subscriber::EnvFilter::new("foo=info"))
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.set_default();
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}
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