Fix handling of whitespace.

src/init_tracing.rs

@@ -0,0 +1,34 @@
+use tracing_subscriber::layer::SubscriberExt;
+use tracing_subscriber::util::SubscriberInitExt;
+use tracing_subscriber::EnvFilter;
+
+pub fn init_telemetry() -> Result<(), Box<dyn std::error::Error>> {
+    let env_filter = EnvFilter::try_from_default_env().unwrap_or(EnvFilter::new("WARN"));
+
+    // let stdout = tracing_subscriber::fmt::Layer::new()
+    //     .pretty()
+    //     .with_file(true)
+    //     .with_line_number(true)
+    //     .with_thread_ids(false)
+    //     .with_target(false);
+
+    opentelemetry::global::set_text_map_propagator(opentelemetry_jaeger::Propagator::new());
+    let tracer = opentelemetry_jaeger::new_pipeline()
+        .with_service_name("toy_language")
+        .install_simple()?;
+
+    let opentelemetry = tracing_opentelemetry::layer().with_tracer(tracer);
+
+    tracing_subscriber::registry()
+        .with(env_filter)
+        .with(opentelemetry)
+        // .with(stdout)
+        .try_init()?;
+
+    Ok(())
+}
+
+pub fn shutdown_telemetry() -> Result<(), Box<dyn std::error::Error>> {
+    opentelemetry::global::shutdown_tracer_provider();
+    Ok(())
+}