Duplicate logging to stdout (#8495)

* Duplicate logging to stdout * Update client/tracing/src/logging/event_format.rs Co-authored-by: Bastian Köcher <[email protected]> Co-authored-by: Bastian Köcher <[email protected]>
paritytech · Mar 31, 2021 · 70f1b61 · 70f1b61
1 parent 3e96c69
commit 70f1b61
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Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/client/tracing/src/logging/event_format.rs b/client/tracing/src/logging/event_format.rs
@@ -43,6 +43,8 @@ pub struct EventFormat<T = SystemTime> {
  pub display_thread_name: bool,
  /// Enable ANSI terminal colors for formatted output.
  pub enable_color: bool,
+ /// Duplicate INFO, WARN and ERROR messages to stdout.
+ pub dup_to_stdout: bool,
 }
 
 impl<T> EventFormat<T>
@@ -123,7 +125,19 @@ where
  writer: &mut dyn fmt::Write,
  event: &Event,
  ) -> fmt::Result {
- self.format_event_custom(CustomFmtContext::FmtContext(ctx), writer, event)
+ if self.dup_to_stdout && (
+ event.metadata().level() == &Level::INFO ||
+ event.metadata().level() == &Level::WARN ||
+ event.metadata().level() == &Level::ERROR
+ ) {
+ let mut out = String::new();
+ self.format_event_custom(CustomFmtContext::FmtContext(ctx), &mut out, event)?;
+ writer.write_str(&out)?;
+ print!("{}", out);
+ Ok(())
+ } else {
+ self.format_event_custom(CustomFmtContext::FmtContext(ctx), writer, event)
+ }
  }
 }
 

diff --git a/client/tracing/src/logging/mod.rs b/client/tracing/src/logging/mod.rs
@@ -167,6 +167,7 @@ where
  display_level: !simple,
  display_thread_name: !simple,
  enable_color,
+ dup_to_stdout: !atty::is(atty::Stream::Stderr) && atty::is(atty::Stream::Stdout),
  };
  let builder = FmtSubscriber::builder().with_env_filter(env_filter);