Improved logging for OTLP receiver

rust/otap-dataflow/crates/otap/src/otlp_receiver.rs

@@ -483,15 +483,22 @@ impl shared::Receiver<OtapPdata> for OTLPReceiver {
         effect_handler: shared::EffectHandler<OtapPdata>,
     ) -> Result<TerminalState, Error> {
         let grpc_enabled = self.config.protocols.grpc.is_some();
-        let http_enabled = self.config.protocols.http.is_some();
         let both_enabled = self.config.protocols.has_both();
 
-        otap_df_telemetry::otel_info!(
-            "receiver.start",
-            message = "Starting OTLP Receiver",
-            grpc_enabled = grpc_enabled,
-            http_enabled = http_enabled
-        );
+        if let Some(grpc) = &self.config.protocols.grpc {
+            otap_df_telemetry::otel_info!(
+                "otlp.receiver.grpc.start",
+                message = "Starting OTLP gRPC receiver",
+                endpoint = %grpc.listening_addr
+            );
+        }
+        if let Some(http) = &self.config.protocols.http {
+            otap_df_telemetry::otel_info!(
+                "otlp.receiver.http.start",
+                message = "Starting OTLP HTTP receiver",
+                endpoint = %http.listening_addr
+            );
+        }
 
         // Determine per-protocol concurrency limits. These are tuned in
         // `tune_max_concurrent_requests()` to not exceed downstream capacity.

rust/otap-dataflow/crates/telemetry/src/registry.rs

@@ -10,7 +10,7 @@ use crate::entity::{EntityRegistry, RegisterOutcome};
 use crate::metrics::{
     MetricSet, MetricSetHandler, MetricSetRegistry, MetricValue, MetricsIterator,
 };
-use crate::otel_info;
+use crate::otel_debug;
 use crate::semconv::SemConvRegistry;
 use parking_lot::Mutex;
 use slotmap::new_key_type;
@@ -76,7 +76,7 @@ impl TelemetryRegistryHandle {
             // TODO(#1907): This could benefit from logging a human-readable form
             // of the entity that we refer to later in the logs, instead of logging
             // every key/value in every line of console_async output.
-            otel_info!("registry.define_entity", schema, definition);
+            otel_debug!("registry.define_entity", schema, definition);
         }
         outcome.key()
     }