Remove Global Error handler.

opentelemetry/src/global/error_handler.rs

@@ -8,9 +8,6 @@ use crate::metrics::MetricError;
 use crate::propagation::PropagationError;
 #[cfg(feature = "trace")]
 use crate::trace::TraceError;
-use once_cell::sync::Lazy;
-
-static GLOBAL_ERROR_HANDLER: Lazy<RwLock<Option<ErrorHandler>>> = Lazy::new(|| RwLock::new(None));
 
 /// Wrapper for error from both tracing and metrics part of open telemetry.
 #[derive(thiserror::Error, Debug)]
@@ -47,40 +44,3 @@ impl<T> From<PoisonError<T>> for Error {
         Error::Other(err.to_string())
     }
 }
-
-struct ErrorHandler(Box<dyn Fn(Error) + Send + Sync>);
-
-/// Handle error using the globally configured error handler.
-///
-/// Writes to stderr if unset.
-pub fn handle_error<T: Into<Error>>(err: T) {
-    match GLOBAL_ERROR_HANDLER.read() {
-        Ok(handler) if handler.is_some() => (handler.as_ref().unwrap().0)(err.into()),
-        _ => match err.into() {
-            #[cfg(feature = "metrics")]
-            #[cfg_attr(docsrs, doc(cfg(feature = "metrics")))]
-            Error::Metric(err) => eprintln!("OpenTelemetry metrics error occurred. {}", err),
-            #[cfg(feature = "trace")]
-            #[cfg_attr(docsrs, doc(cfg(feature = "trace")))]
-            Error::Trace(err) => eprintln!("OpenTelemetry trace error occurred. {}", err),
-            #[cfg(feature = "logs")]
-            #[cfg_attr(docsrs, doc(cfg(feature = "logs")))]
-            Error::Log(err) => eprintln!("OpenTelemetry log error occurred. {}", err),
-            Error::Propagation(err) => {
-                eprintln!("OpenTelemetry propagation error occurred. {}", err)
-            }
-            Error::Other(err_msg) => eprintln!("OpenTelemetry error occurred. {}", err_msg),
-        },
-    }
-}
-
-/// Set global error handler.
-pub fn set_error_handler<F>(f: F) -> std::result::Result<(), Error>
-where
-    F: Fn(Error) + Send + Sync + 'static,
-{
-    GLOBAL_ERROR_HANDLER
-        .write()
-        .map(|mut handler| *handler = Some(ErrorHandler(Box::new(f))))
-        .map_err(Into::into)
-}

opentelemetry/src/global/mod.rs

@@ -138,8 +138,8 @@ mod metrics;
 mod propagation;
 #[cfg(feature = "trace")]
 mod trace;
+pub use error_handler::Error;
 
-pub use error_handler::{handle_error, set_error_handler, Error};
 #[cfg(feature = "metrics")]
 #[cfg_attr(docsrs, doc(cfg(feature = "metrics")))]
 pub use metrics::*;