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114 lines
3.5 KiB
114 lines
3.5 KiB
use anyhow::Result;
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use std::option::Option::Some;
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use std::path::Path;
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use tracing::subscriber::set_global_default;
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use tracing::{Event, Level, Subscriber};
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use tracing_subscriber::fmt::format::{DefaultFields, Format};
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use tracing_subscriber::fmt::time::ChronoLocal;
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use tracing_subscriber::layer::{Context, SubscriberExt};
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use tracing_subscriber::{fmt, EnvFilter, FmtSubscriber, Layer, Registry};
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use uuid::Uuid;
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pub fn init(debug: bool, json: bool, dir: impl AsRef<Path>, swap_id: Option<Uuid>) -> Result<()> {
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if json {
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let level = if debug { Level::DEBUG } else { Level::INFO };
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let is_terminal = atty::is(atty::Stream::Stderr);
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FmtSubscriber::builder()
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.with_env_filter(format!("swap={}", level))
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.with_writer(std::io::stderr)
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.with_ansi(is_terminal)
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.with_timer(ChronoLocal::with_format("%F %T".to_owned()))
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.with_target(false)
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.json()
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.init();
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Ok(())
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} else if let Some(swap_id) = swap_id {
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let level_filter = EnvFilter::try_new("swap=debug")?;
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let registry = Registry::default().with(level_filter);
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let appender = tracing_appender::rolling::never(dir, format!("swap-{}.log", swap_id));
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let (appender, guard) = tracing_appender::non_blocking(appender);
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std::mem::forget(guard);
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let file_logger = fmt::layer()
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.with_ansi(false)
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.with_target(false)
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.with_writer(appender);
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if debug {
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set_global_default(registry.with(file_logger).with(debug_terminal_printer()))?;
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} else {
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set_global_default(registry.with(file_logger).with(info_terminal_printer()))?;
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}
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Ok(())
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} else {
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let level = if debug { Level::DEBUG } else { Level::INFO };
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let is_terminal = atty::is(atty::Stream::Stderr);
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FmtSubscriber::builder()
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.with_env_filter(format!("swap={}", level))
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.with_writer(std::io::stderr)
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.with_ansi(is_terminal)
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.with_timer(ChronoLocal::with_format("%F %T".to_owned()))
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.with_target(false)
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.init();
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Ok(())
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}
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}
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pub struct StdErrPrinter<L> {
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inner: L,
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level: Level,
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}
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type StdErrLayer<S, T> = tracing_subscriber::fmt::Layer<
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S,
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DefaultFields,
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Format<tracing_subscriber::fmt::format::Full, T>,
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fn() -> std::io::Stderr,
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>;
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fn debug_terminal_printer<S>() -> StdErrPrinter<StdErrLayer<S, ChronoLocal>> {
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let is_terminal = atty::is(atty::Stream::Stderr);
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StdErrPrinter {
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inner: fmt::layer()
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.with_ansi(is_terminal)
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.with_target(false)
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.with_timer(ChronoLocal::with_format("%F %T".to_owned()))
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.with_writer(std::io::stderr),
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level: Level::DEBUG,
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}
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}
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fn info_terminal_printer<S>() -> StdErrPrinter<StdErrLayer<S, ()>> {
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let is_terminal = atty::is(atty::Stream::Stderr);
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StdErrPrinter {
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inner: fmt::layer()
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.with_ansi(is_terminal)
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.with_target(false)
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.with_level(false)
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.without_time()
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.with_writer(std::io::stderr),
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level: Level::INFO,
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}
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}
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impl<L, S> Layer<S> for StdErrPrinter<L>
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where
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L: 'static + Layer<S>,
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S: Subscriber + for<'a> tracing_subscriber::registry::LookupSpan<'a>,
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{
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fn on_event(&self, event: &Event<'_>, ctx: Context<'_, S>) {
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if self.level.ge(event.metadata().level()) {
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self.inner.on_event(event, ctx);
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}
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}
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}
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