forward-port Filter impl for EnvFilter
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) ## Motivation Currently, the `Filtered` type's `Subscribe` impl accidentally calls the inner `Filter`'s `on_enter` hook in the `on_exit` hook. This is...obviously wrong, lol, and means that filters like `EnvFilter` will never consider spans to have exited, breaking filtering behavior. @tfreiberg-fastly originally noticed this bug (see #1983 (comment)), but I wanted to make the change separately from PR #1983 so that we can fix it on the main branch without waiting for #1983 to merge first. ## Solution This branch, uh, you know... fixes that.
Currently, `Filter` only has the `on_new_span`, `on_enter`, `on_exit`, and `on_close` callbacks. This means it won't handle cases where a span records a new field value that changes its filter state. This branch adds the missing `on_record` callback. Signed-off-by: Eliza Weisman <eliza@buoyant.io>
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| /// use tracing_subscriber::{EnvFilter, fmt, prelude::*}; | ||
| /// | ||
| /// tracing_subscriber::registry() | ||
| /// .with(fmt::layer()) |
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| /// .with(fmt::layer()) | |
| /// .with(fmt::subscriber()) |
## Motivation Filtering by span and field requires using `EnvFilter` rather than `Targets`. Per-subscriber filtering requires the `Filter` trait, which `EnvFilter` does not implement. ## Solution Implement the `Filter` trait for `EnvFilter`. PR #1973 adds additiional methods to the `Filter` trait, which are necessary for `EnvFilter` to implement dynamic span filtering. Now that those methods are added, we can provide a `Filter` impl for `EnvFilter`. In addition, we changed the globally-scoped `thread_local!` macro to use a `ThreadLocal` struct as a field, so that multiple `EnvFilter`s used as per-subscriber filters don't share a single span scope. Fixes #1868 Follow-up on #1973 Co-authored-by: Eliza Weisman <eliza@buoyant.io>
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# 0.3.10 (Apr 1, 2022) This release adds several new features, including a `Filter` implementation and new builder API for `EnvFilter`, support for using a `Vec<L> where L: Layer` as a `Layer`, and a number of smaller API improvements to make working with dynamic and reloadable layers easier. ### Added - **registry**: Implement `Filter` for `EnvFilter`, allowing it to be used with per-layer filtering ([#1983]) - **registry**: `Filter::on_new_span`, `Filter::on_enter`, `Filter::on_exit`, `Filter::on_close` and `Filter::on_record` callbacks to allow `Filter`s to track span states internally ([#1973], [#2017], [#2031]) - **registry**: `Filtered::filter` and `Filtered::filter_mut` accessors ([#1959]) - **registry**: `Filtered::inner` and `Filtered::inner_mut` accessors to borrow the wrapped `Layer` ([#2034]) - **layer**: Implement `Layer` for `Vec<L: Layer>`, to allow composing together a dynamically sized list of `Layer`s ([#2027]) - **layer**: `Layer::boxed` method to make type-erasing `Layer`s easier ([#2026]) - **fmt**: `fmt::Layer::writer` and `fmt::Layer::writer_mut` accessors ([#2034]) - **fmt**: `fmt::Layer::set_ansi` method to allow changing the ANSI formatting configuration at runtime ([#2034]) - **env-filter**: `EnvFilter::builder` to configure a new `EnvFilter` prior to parsing it ([#2035]) - Several documentation fixes and improvements ([#1972], [#1971], [#2023], [#2023]) ### Fixed - **fmt**: `fmt::Layer`'s auto traits no longer depend on the `Subscriber` type parameter's auto traits ([2025]) - **env-filter**: Fixed missing help text when the `ansi` feature is disabled ([#2029]) Thanks to new contributors @TimoFreiberg and @wagenet, as well as @CAD97 for contributing to this release! [#1983]: #1983 [#1973]: #1973 [#2017]: #2017 [#2031]: #2031 [#1959]: #1959 [#2034]: #2034 [#2027]: #2027 [#2026]: #2026 [#2035]: #2035 [#1972]: #1972 [#1971]: #1971 [#2023]: #2023
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# 0.3.10 (Apr 1, 2022) This release adds several new features, including a `Filter` implementation and new builder API for `EnvFilter`, support for using a `Vec<L> where L: Layer` as a `Layer`, and a number of smaller API improvements to make working with dynamic and reloadable layers easier. ### Added - **registry**: Implement `Filter` for `EnvFilter`, allowing it to be used with per-layer filtering ([#1983]) - **registry**: `Filter::on_new_span`, `Filter::on_enter`, `Filter::on_exit`, `Filter::on_close` and `Filter::on_record` callbacks to allow `Filter`s to track span states internally ([#1973], [#2017], [#2031]) - **registry**: `Filtered::filter` and `Filtered::filter_mut` accessors ([#1959]) - **registry**: `Filtered::inner` and `Filtered::inner_mut` accessors to borrow the wrapped `Layer` ([#2034]) - **layer**: Implement `Layer` for `Vec<L: Layer>`, to allow composing together a dynamically sized list of `Layer`s ([#2027]) - **layer**: `Layer::boxed` method to make type-erasing `Layer`s easier ([#2026]) - **fmt**: `fmt::Layer::writer` and `fmt::Layer::writer_mut` accessors ([#2034]) - **fmt**: `fmt::Layer::set_ansi` method to allow changing the ANSI formatting configuration at runtime ([#2034]) - **env-filter**: `EnvFilter::builder` to configure a new `EnvFilter` prior to parsing it ([#2035]) - Several documentation fixes and improvements ([#1972], [#1971], [#2023], [#2023]) ### Fixed - **fmt**: `fmt::Layer`'s auto traits no longer depend on the `Subscriber` type parameter's auto traits ([2025]) - **env-filter**: Fixed missing help text when the `ansi` feature is disabled ([#2029]) Thanks to new contributors @TimoFreiberg and @wagenet, as well as @CAD97 for contributing to this release! [#1983]: #1983 [#1973]: #1973 [#2017]: #2017 [#2031]: #2031 [#1959]: #1959 [#2034]: #2034 [#2027]: #2027 [#2026]: #2026 [#2035]: #2035 [#1972]: #1972 [#1971]: #1971 [#2023]: #2023
hawkw
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# 0.3.10 (Apr 1, 2022) This release adds several new features, including a `Filter` implementation and new builder API for `EnvFilter`, support for using a `Vec<L> where L: Layer` as a `Layer`, and a number of smaller API improvements to make working with dynamic and reloadable layers easier. ### Added - **registry**: Implement `Filter` for `EnvFilter`, allowing it to be used with per-layer filtering ([#1983]) - **registry**: `Filter::on_new_span`, `Filter::on_enter`, `Filter::on_exit`, `Filter::on_close` and `Filter::on_record` callbacks to allow `Filter`s to track span states internally ([#1973], [#2017], [#2031]) - **registry**: `Filtered::filter` and `Filtered::filter_mut` accessors ([#1959]) - **registry**: `Filtered::inner` and `Filtered::inner_mut` accessors to borrow the wrapped `Layer` ([#2034]) - **layer**: Implement `Layer` for `Vec<L: Layer>`, to allow composing together a dynamically sized list of `Layer`s ([#2027]) - **layer**: `Layer::boxed` method to make type-erasing `Layer`s easier ([#2026]) - **fmt**: `fmt::Layer::writer` and `fmt::Layer::writer_mut` accessors ([#2034]) - **fmt**: `fmt::Layer::set_ansi` method to allow changing the ANSI formatting configuration at runtime ([#2034]) - **env-filter**: `EnvFilter::builder` to configure a new `EnvFilter` prior to parsing it ([#2035]) - Several documentation fixes and improvements ([#1972], [#1971], [#2023], [#2023]) ### Fixed - **fmt**: `fmt::Layer`'s auto traits no longer depend on the `Subscriber` type parameter's auto traits ([2025]) - **env-filter**: Fixed missing help text when the `ansi` feature is disabled ([#2029]) Thanks to new contributors @TimoFreiberg and @wagenet, as well as @CAD97 for contributing to this release! [#1983]: #1983 [#1973]: #1973 [#2017]: #2017 [#2031]: #2031 [#1959]: #1959 [#2034]: #2034 [#2027]: #2027 [#2026]: #2026 [#2035]: #2035 [#1972]: #1972 [#1971]: #1971 [#2023]: #2023
hawkw
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# 0.3.10 (Apr 1, 2022) This release adds several new features, including a `Filter` implementation and new builder API for `EnvFilter`, support for using a `Vec<L> where L: Layer` as a `Layer`, and a number of smaller API improvements to make working with dynamic and reloadable layers easier. ### Added - **registry**: Implement `Filter` for `EnvFilter`, allowing it to be used with per-layer filtering ([#1983]) - **registry**: `Filter::on_new_span`, `Filter::on_enter`, `Filter::on_exit`, `Filter::on_close` and `Filter::on_record` callbacks to allow `Filter`s to track span states internally ([#1973], [#2017], [#2031]) - **registry**: `Filtered::filter` and `Filtered::filter_mut` accessors ([#1959]) - **registry**: `Filtered::inner` and `Filtered::inner_mut` accessors to borrow the wrapped `Layer` ([#2034]) - **layer**: Implement `Layer` for `Vec<L: Layer>`, to allow composing together a dynamically sized list of `Layer`s ([#2027]) - **layer**: `Layer::boxed` method to make type-erasing `Layer`s easier ([#2026]) - **fmt**: `fmt::Layer::writer` and `fmt::Layer::writer_mut` accessors ([#2034]) - **fmt**: `fmt::Layer::set_ansi` method to allow changing the ANSI formatting configuration at runtime ([#2034]) - **env-filter**: `EnvFilter::builder` to configure a new `EnvFilter` prior to parsing it ([#2035]) - Several documentation fixes and improvements ([#1972], [#1971], [#2023], [#2023]) ### Fixed - **fmt**: `fmt::Layer`'s auto traits no longer depend on the `Subscriber` type parameter's auto traits ([2025]) - **env-filter**: Fixed missing help text when the `ansi` feature is disabled ([#2029]) Thanks to new contributors @TimoFreiberg and @wagenet, as well as @CAD97 for contributing to this release! [#1983]: #1983 [#1973]: #1973 [#2017]: #2017 [#2031]: #2031 [#1959]: #1959 [#2034]: #2034 [#2027]: #2027 [#2026]: #2026 [#2035]: #2035 [#1972]: #1972 [#1971]: #1971 [#2023]: #2023
hawkw
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# 0.3.10 (Apr 1, 2022) This release adds several new features, including a `Filter` implementation and new builder API for `EnvFilter`, support for using a `Vec<L> where L: Layer` as a `Layer`, and a number of smaller API improvements to make working with dynamic and reloadable layers easier. ### Added - **registry**: Implement `Filter` for `EnvFilter`, allowing it to be used with per-layer filtering ([#1983]) - **registry**: `Filter::on_new_span`, `Filter::on_enter`, `Filter::on_exit`, `Filter::on_close` and `Filter::on_record` callbacks to allow `Filter`s to track span states internally ([#1973], [#2017], [#2031]) - **registry**: `Filtered::filter` and `Filtered::filter_mut` accessors ([#1959]) - **registry**: `Filtered::inner` and `Filtered::inner_mut` accessors to borrow the wrapped `Layer` ([#2034]) - **layer**: Implement `Layer` for `Vec<L: Layer>`, to allow composing together a dynamically sized list of `Layer`s ([#2027]) - **layer**: `Layer::boxed` method to make type-erasing `Layer`s easier ([#2026]) - **fmt**: `fmt::Layer::writer` and `fmt::Layer::writer_mut` accessors ([#2034]) - **fmt**: `fmt::Layer::set_ansi` method to allow changing the ANSI formatting configuration at runtime ([#2034]) - **env-filter**: `EnvFilter::builder` to configure a new `EnvFilter` prior to parsing it ([#2035]) - Several documentation fixes and improvements ([#1972], [#1971], [#2023], [#2023]) ### Fixed - **fmt**: `fmt::Layer`'s auto traits no longer depend on the `Subscriber` type parameter's auto traits ([#2025]) - **env-filter**: Fixed missing help text when the `ansi` feature is disabled ([#2029]) Thanks to new contributors @TimoFreiberg and @wagenet, as well as @CAD97 for contributing to this release! [#1983]: #1983 [#1973]: #1973 [#2017]: #2017 [#2031]: #2031 [#1959]: #1959 [#2034]: #2034 [#2027]: #2027 [#2026]: #2026 [#2035]: #2035 [#1972]: #1972 [#1971]: #1971 [#2023]: #2023 [#2025]: #2025 [#2029]: #2029
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# 0.3.10 (Apr 1, 2022) This release adds several new features, including a `Filter` implementation and new builder API for `EnvFilter`, support for using a `Vec<L> where L: Layer` as a `Layer`, and a number of smaller API improvements to make working with dynamic and reloadable layers easier. ### Added - **registry**: Implement `Filter` for `EnvFilter`, allowing it to be used with per-layer filtering ([tokio-rs#1983]) - **registry**: `Filter::on_new_span`, `Filter::on_enter`, `Filter::on_exit`, `Filter::on_close` and `Filter::on_record` callbacks to allow `Filter`s to track span states internally ([tokio-rs#1973], [tokio-rs#2017], [tokio-rs#2031]) - **registry**: `Filtered::filter` and `Filtered::filter_mut` accessors ([tokio-rs#1959]) - **registry**: `Filtered::inner` and `Filtered::inner_mut` accessors to borrow the wrapped `Layer` ([tokio-rs#2034]) - **layer**: Implement `Layer` for `Vec<L: Layer>`, to allow composing together a dynamically sized list of `Layer`s ([tokio-rs#2027]) - **layer**: `Layer::boxed` method to make type-erasing `Layer`s easier ([tokio-rs#2026]) - **fmt**: `fmt::Layer::writer` and `fmt::Layer::writer_mut` accessors ([tokio-rs#2034]) - **fmt**: `fmt::Layer::set_ansi` method to allow changing the ANSI formatting configuration at runtime ([tokio-rs#2034]) - **env-filter**: `EnvFilter::builder` to configure a new `EnvFilter` prior to parsing it ([tokio-rs#2035]) - Several documentation fixes and improvements ([tokio-rs#1972], [tokio-rs#1971], [tokio-rs#2023], [tokio-rs#2023]) ### Fixed - **fmt**: `fmt::Layer`'s auto traits no longer depend on the `Subscriber` type parameter's auto traits ([tokio-rs#2025]) - **env-filter**: Fixed missing help text when the `ansi` feature is disabled ([tokio-rs#2029]) Thanks to new contributors @TimoFreiberg and @wagenet, as well as @CAD97 for contributing to this release! [tokio-rs#1983]: tokio-rs#1983 [tokio-rs#1973]: tokio-rs#1973 [tokio-rs#2017]: tokio-rs#2017 [tokio-rs#2031]: tokio-rs#2031 [tokio-rs#1959]: tokio-rs#1959 [tokio-rs#2034]: tokio-rs#2034 [tokio-rs#2027]: tokio-rs#2027 [tokio-rs#2026]: tokio-rs#2026 [tokio-rs#2035]: tokio-rs#2035 [tokio-rs#1972]: tokio-rs#1972 [tokio-rs#1971]: tokio-rs#1971 [tokio-rs#2023]: tokio-rs#2023 [tokio-rs#2025]: tokio-rs#2025 [tokio-rs#2029]: tokio-rs#2029
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This ports the following changes from
v0.1.xtomaster:FilterforEnvFilter(Impl filter for EnvFilter #1983)Filter::on_recordcallbackFiltered::on_exitcallingon_enterby mistake (subscriber: fixFiltered::on_exitcallingon_enterby mistake #2018)