chore: move otel provider outside of trace module (#8968)

codex-rs/core/src/otel_init.rs

@@ -6,7 +6,7 @@ use codex_otel::config::OtelExporter;
 use codex_otel::config::OtelHttpProtocol;
 use codex_otel::config::OtelSettings;
 use codex_otel::config::OtelTlsConfig as OtelTlsSettings;
-use codex_otel::traces::otel_provider::OtelProvider;
+use codex_otel::otel_provider::OtelProvider;
 use std::error::Error;
 
 /// Build an OpenTelemetry provider from the app Config.

codex-rs/otel/README.md

@@ -2,21 +2,22 @@
 
 `codex-otel` is the OpenTelemetry integration crate for Codex. It provides:
 
-- Trace/log exporters and tracing subscriber layers (`codex_otel::traces::otel_provider`).
+- Trace/log/metrics exporters and tracing subscriber layers (`codex_otel::otel_provider`).
 - A structured event helper (`codex_otel::OtelManager`).
 - OpenTelemetry metrics support via OTLP exporters (`codex_otel::metrics`).
 - A metrics facade on `OtelManager` so tracing + metrics share metadata.
 
 ## Tracing and logs
 
-Create an OTEL provider from `OtelSettings`, then attach its layers to your
-`tracing_subscriber` registry:
+Create an OTEL provider from `OtelSettings`. The provider also configures
+metrics (when enabled), then attach its layers to your `tracing_subscriber`
+registry:
 
 ```rust
 use codex_otel::config::OtelExporter;
 use codex_otel::config::OtelHttpProtocol;
 use codex_otel::config::OtelSettings;
-use codex_otel::traces::otel_provider::OtelProvider;
+use codex_otel::otel_provider::OtelProvider;
 use tracing_subscriber::prelude::*;
 
 let settings = OtelSettings {

codex-rs/otel/src/lib.rs

@@ -1,5 +1,6 @@
 pub mod config;
 pub mod metrics;
+pub mod otel_provider;
 pub mod traces;
 
 mod otlp;
@@ -11,7 +12,7 @@ use crate::metrics::Result as MetricsResult;
 use crate::metrics::timer::Timer;
 use crate::metrics::validation::validate_tag_key;
 use crate::metrics::validation::validate_tag_value;
-use crate::traces::otel_provider::OtelProvider;
+use crate::otel_provider::OtelProvider;
 use codex_protocol::ThreadId;
 use serde::Serialize;
 use std::time::Duration;

codex-rs/otel/src/otel_provider.rs

@@ -47,8 +47,6 @@ static TRACEPARENT_CONTEXT: OnceLock<Option<Context>> = OnceLock::new();
 thread_local! {
     static TRACEPARENT_GUARD: RefCell<Option<ContextGuard>> = const { RefCell::new(None) };
 }
-
-// TODO(jif) move OtelProvider out of `traces/`
 pub struct OtelProvider {
     pub logger: Option<SdkLoggerProvider>,
     pub tracer_provider: Option<SdkTracerProvider>,

codex-rs/otel/src/traces/mod.rs

@@ -1,2 +1 @@
 pub mod otel_manager;
-pub mod otel_provider;

codex-rs/otel/src/traces/otel_manager.rs

@@ -1,4 +1,4 @@
-use crate::traces::otel_provider::traceparent_context_from_env;
+use crate::otel_provider::traceparent_context_from_env;
 use chrono::SecondsFormat;
 use chrono::Utc;
 use codex_api::ResponseEvent;