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Always exclude certain dependencies from logging #234

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kornelski opened this issue Jun 16, 2022 · 2 comments
Open

Always exclude certain dependencies from logging #234

kornelski opened this issue Jun 16, 2022 · 2 comments
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enhancement

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@kornelski
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I'd like to have RUST_LOG env variable to work as usual, except never log anything from a couple of noisy dependencies.

I thought this would do the trick:

        let _ = env_logger::Builder::from_default_env()
            .filter(Some("html5ever"), log::LevelFilter::Off)
            .filter(Some("tantivy"), log::LevelFilter::Off)
            .try_init();

but it seems that RUST_LOG=debug enables debug output even for the dependencies I'm trying to filter out.

Is there a way to gracefully combine env vars and explicit filters, with my filter() calls taking precedence?
@slientgoat
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RUST_LOG=DEBUG,html5ever=off,tantivy=off

@kornelski
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kornelski commented Aug 23, 2022 •
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I know it's possible to set it manually every time, but my whole point is that I would like to avoid having to do this the long way, and provide a better default. In other words I'd like:

  • RUST_LOG=debug to behave like RUST_LOG=debug,html5ever=off,tantivy=off, and ideally
  • RUST_LOG=debug,html5ever=on to behave like RUST_LOG=debug,html5ever=on,tantivy=off

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@epage @kornelski @slientgoat