Use default names for SDK provider implementations

opentelemetry-sdk/src/logs/log_emitter.rs

@@ -10,11 +10,14 @@ use opentelemetry::{
 #[cfg(feature = "logs_level_enabled")]
 use opentelemetry::logs::Severity;
 
-use std::sync::{
-    atomic::{AtomicBool, Ordering},
-    Arc,
-};
 use std::time::SystemTime;
+use std::{
+    borrow::Cow,
+    sync::{
+        atomic::{AtomicBool, Ordering},
+        Arc,
+    },
+};
 
 use once_cell::sync::Lazy;
 
@@ -45,9 +48,23 @@ pub struct LoggerProvider {
     inner: Arc<LoggerProviderInner>,
 }
 
+/// Default logger name if empty string is provided.
+const DEFAULT_COMPONENT_NAME: &str = "rust.opentelemetry.io/sdk/logger";
+
 impl opentelemetry::logs::LoggerProvider for LoggerProvider {
     type Logger = Logger;
 
+    fn logger(&self, name: impl Into<Cow<'static, str>>) -> Self::Logger {
+        let mut name = name.into();
+
+        if name.is_empty() {
+            name = Cow::Borrowed(DEFAULT_COMPONENT_NAME)
+        };
+
+        let scope = InstrumentationScope::builder(name).build();
+        self.logger_with_scope(scope)
+    }
+
     fn logger_with_scope(&self, scope: InstrumentationScope) -> Self::Logger {
         // If the provider is shutdown, new logger will refer a no-op logger provider.
         if self.inner.is_shutdown.load(Ordering::Relaxed) {

opentelemetry-sdk/src/metrics/meter_provider.rs

@@ -144,7 +144,20 @@ impl Drop for SdkMeterProviderInner {
         }
     }
 }
+
+/// Default logger name if empty string is provided.
+const DEFAULT_COMPONENT_NAME: &str = "rust.opentelemetry.io/sdk/meter";
+
 impl MeterProvider for SdkMeterProvider {
+    fn meter(&self, mut name: &'static str) -> Meter {
+        if name.is_empty() {
+            name = DEFAULT_COMPONENT_NAME
+        };
+
+        let scope = InstrumentationScope::builder(name).build();
+        self.meter_with_scope(scope)
+    }
+
     fn meter_with_scope(&self, scope: InstrumentationScope) -> Meter {
         if self.inner.is_shutdown.load(Ordering::Relaxed) {
             return Meter::new(Arc::new(NoopMeter::new()));

opentelemetry-sdk/src/trace/provider.rs

@@ -247,10 +247,24 @@ impl TracerProvider {
     }
 }
 
+/// Default tracer name if empty string is provided.
+const DEFAULT_COMPONENT_NAME: &str = "rust.opentelemetry.io/sdk/tracer";
+
 impl opentelemetry::trace::TracerProvider for TracerProvider {
     /// This implementation of `TracerProvider` produces `Tracer` instances.
     type Tracer = Tracer;
 
+    fn tracer(&self, name: impl Into<Cow<'static, str>>) -> Self::Tracer {
+        let mut name = name.into();
+
+        if name.is_empty() {
+            name = Cow::Borrowed(DEFAULT_COMPONENT_NAME)
+        };
+
+        let scope = InstrumentationScope::builder(name).build();
+        self.tracer_with_scope(scope)
+    }
+
     fn tracer_with_scope(&self, scope: InstrumentationScope) -> Self::Tracer {
         if self.inner.is_shutdown.load(Ordering::Relaxed) {
             return Tracer::new(scope, NOOP_TRACER_PROVIDER.clone());