How to exclude a library log in tracing subsciber?

help
1

I have many dependencies and there are logs of some dependencies that I don't care, how can I exclude them?

2

you can use a Targets filter. example:

let filter = filter::Targets::new()
    // Enable the `INFO` level for anything in `my_crate`
    .with_target("my_crate", Level::INFO)
    // use `OFF` level filter for specific crate
    .with_target("other_crate", LevelFilter::OFF);

// Build a new subscriber with the `fmt` layer using the `Targets`
// filter we constructed above.
tracing_subscriber::registry()
    .with(tracing_subscriber::fmt::layer())
    .with(filter)
    .init();
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3

Can I only set other_crates at OFF level and by default others are able to log?

4

You can use Targets::with_default to define the default log level and then go about your business of finer-grained log level configuration.

If you want to use the EnvFilter with the RUST_LOG environment variable, I believe specifying RUST_LOG=info,other_crate=off should do what you want.

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