feat: Stabilize logger.enabled by removing spec_unstable_logs_enabled feature flag

opentelemetry-appender-log/CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## vNext
 
+- Remove experimental `spec_unstable_logs_enabled` feature flag - logger.enabled functionality is now stabilized and always available.
+
 ## 0.30.0
 
 Released 2025-May-23

opentelemetry-appender-log/Cargo.toml

@@ -25,14 +25,12 @@ opentelemetry-semantic-conventions = { version = "0.30", path = "../opentelemetr
 ] }
 
 [features]
-spec_unstable_logs_enabled = ["opentelemetry/spec_unstable_logs_enabled"]
 with-serde = ["log/kv_serde", "serde"]
 experimental_metadata_attributes = ["dep:opentelemetry-semantic-conventions"]
 
 [dev-dependencies]
 opentelemetry_sdk = { path = "../opentelemetry-sdk", features = [
   "testing",
-  "spec_unstable_logs_enabled",
 ] }
 opentelemetry-stdout = { workspace = true, features = ["logs"] }
 log = { workspace = true, features = ["kv_serde"] }

opentelemetry-appender-log/src/lib.rs

@@ -91,7 +91,6 @@
 //!
 //! This library provides the following Cargo features:
 //!
-//! - `spec_unstable_logs_enabled`: Allow users to control the log level.
 //! - `with-serde`: Support complex values as attributes without stringifying them.
 //!
 //! [Logs Bridge API]: https://opentelemetry.io/docs/specs/otel/logs/bridge-api/
@@ -135,14 +134,11 @@ where
     L: Logger + Send + Sync,
 {
     fn enabled(&self, _metadata: &Metadata) -> bool {
-        #[cfg(feature = "spec_unstable_logs_enabled")]
-        return self.logger.event_enabled(
+        self.logger.event_enabled(
             severity_of_level(_metadata.level()),
             _metadata.target(),
             None,
-        );
-        #[cfg(not(feature = "spec_unstable_logs_enabled"))]
-        true
+        )
     }
 
     fn log(&self, record: &Record) {
@@ -791,9 +787,6 @@ mod tests {
         // As a result of using `with_simple_exporter` while building the logger provider,
         // the processor used is a `SimpleLogProcessor` which has an implementation of `event_enabled`
         // that always returns true.
-        #[cfg(feature = "spec_unstable_logs_enabled")]
-        assert!(otel_log_appender.enabled(&log::Metadata::builder().build()));
-        #[cfg(not(feature = "spec_unstable_logs_enabled"))]
         assert!(otel_log_appender.enabled(&log::Metadata::builder().build()));
     }
 

opentelemetry-appender-tracing/CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## vNext
 
+- **Breaking** Remove `spec_unstable_logs_enabled` feature flag - logger.enabled functionality is now always available.
+
 ## 0.30.1
 
 Released 2025-June-05

opentelemetry-appender-tracing/Cargo.toml

@@ -36,14 +36,12 @@ pprof = { version = "0.14", features = ["flamegraph", "criterion"] }
 [features]
 default = []
 experimental_metadata_attributes = ["dep:tracing-log"]
-spec_unstable_logs_enabled = ["opentelemetry/spec_unstable_logs_enabled"]
 experimental_use_tracing_span_context = ["tracing-opentelemetry"]
 
 
 [[bench]]
 name = "logs"
 harness = false
-required-features = ["spec_unstable_logs_enabled"]
 
 [[bench]]
 name = "log-attributes"

opentelemetry-appender-tracing/src/layer.rs

@@ -220,7 +220,6 @@ where
         let severity = severity_of_level(metadata.level());
         let target = metadata.target();
         let name = metadata.name();
-        #[cfg(feature = "spec_unstable_logs_enabled")]
         if !self.logger.event_enabled(severity, target, Some(name)) {
             // TODO: See if we need internal logs or track the count.
             return;
@@ -916,7 +915,6 @@ mod tests {
             // no-op
         }
 
-        #[cfg(feature = "spec_unstable_logs_enabled")]
         fn event_enabled(&self, level: Severity, target: &str, name: Option<&str>) -> bool {
             // assert that passed in arguments are same as the ones set in the test.
             assert_eq!(self.severity_level, level);
@@ -933,7 +931,6 @@ mod tests {
         }
     }
 
-    #[cfg(feature = "spec_unstable_logs_enabled")]
     #[test]
     fn is_enabled() {
         // Arrange

opentelemetry-appender-tracing/src/lib.rs

@@ -135,7 +135,6 @@
 //! >   spans to OpenTelemetry in the future.
 //!
 //! ## Feature Flags
-//! `spec_unstable_logs_enabled`: TODO
 //!
 //! `experimental_metadata_attributes`: TODO
 //!

opentelemetry-sdk/CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - TODO: Placeholder for Span processor related things
   - *Fix* SpanProcessor::on_start is no longer called on non recording spans
+- **Breaking** Remove `spec_unstable_logs_enabled` feature flag - logger.enabled functionality is now always available.
 
 ## 0.30.0
 

opentelemetry-sdk/Cargo.toml

@@ -43,7 +43,6 @@ default = ["trace", "metrics", "logs", "internal-logs"]
 trace = ["opentelemetry/trace", "rand", "percent-encoding"]
 jaeger_remote_sampler = ["trace", "opentelemetry-http", "http", "serde", "serde_json", "url", "experimental_async_runtime"]
 logs = ["opentelemetry/logs", "serde_json"]
-spec_unstable_logs_enabled = ["logs", "opentelemetry/spec_unstable_logs_enabled"]
 metrics = ["opentelemetry/metrics"]
 testing = ["opentelemetry/testing", "trace", "metrics", "logs", "rt-tokio", "rt-tokio-current-thread", "tokio/macros", "tokio/rt-multi-thread"]
 experimental_async_runtime = []
@@ -92,7 +91,7 @@ harness = false
 [[bench]]
 name = "log_enabled"
 harness = false
-required-features = ["spec_unstable_logs_enabled", "experimental_logs_concurrent_log_processor"]
+required-features = ["experimental_logs_concurrent_log_processor"]
 
 [[bench]]
 name = "tracer_creation"

opentelemetry-sdk/benches/log_enabled.rs

@@ -9,7 +9,7 @@
     | exporter_disabled_simple_processor          |  5.3 ns     |
 */
 
-// cargo bench --bench log_enabled --features="spec_unstable_logs_enabled,experimental_logs_concurrent_log_processor"
+// cargo bench --bench log_enabled --features="experimental_logs_concurrent_log_processor"
 
 use criterion::{criterion_group, criterion_main, Criterion};
 use opentelemetry::logs::{Logger, LoggerProvider};

opentelemetry-sdk/src/lib.rs

@@ -86,8 +86,6 @@
 //!
 //! For `logs` the following feature flags are available:
 //!
-//! * `spec_unstable_logs_enabled`: control the log level
-//!
 //! Support for recording and exporting telemetry asynchronously and perform
 //! metrics aggregation can be added via the following flags:
 //!

opentelemetry-sdk/src/logs/concurrent_log_processor.rs

@@ -48,7 +48,6 @@ impl<T: LogExporter> LogProcessor for SimpleConcurrentLogProcessor<T> {
         self.exporter.shutdown_with_timeout(timeout)
     }
 
-    #[cfg(feature = "spec_unstable_logs_enabled")]
     #[inline]
     fn event_enabled(
         &self,

opentelemetry-sdk/src/logs/export.rs

@@ -2,7 +2,6 @@
 use crate::error::OTelSdkResult;
 use crate::logs::SdkLogRecord;
 use crate::Resource;
-#[cfg(feature = "spec_unstable_logs_enabled")]
 use opentelemetry::logs::Severity;
 use opentelemetry::InstrumentationScope;
 use std::fmt::Debug;
@@ -143,7 +142,6 @@ pub trait LogExporter: Send + Sync + Debug {
     fn shutdown(&self) -> OTelSdkResult {
         self.shutdown_with_timeout(time::Duration::from_secs(5))
     }
-    #[cfg(feature = "spec_unstable_logs_enabled")]
     /// Check if logs are enabled.
     fn event_enabled(&self, _level: Severity, _target: &str, _name: Option<&str>) -> bool {
         // By default, all logs are enabled

opentelemetry-sdk/src/logs/log_processor.rs

@@ -29,7 +29,6 @@
 use crate::error::OTelSdkResult;
 use crate::{logs::SdkLogRecord, Resource};
 
-#[cfg(feature = "spec_unstable_logs_enabled")]
 use opentelemetry::logs::Severity;
 use opentelemetry::InstrumentationScope;
 
@@ -64,7 +63,6 @@ pub trait LogProcessor: Send + Sync + Debug {
     fn shutdown(&self) -> OTelSdkResult {
         self.shutdown_with_timeout(Duration::from_secs(5))
     }
-    #[cfg(feature = "spec_unstable_logs_enabled")]
     /// Check if logging is enabled
     fn event_enabled(&self, _level: Severity, _target: &str, _name: Option<&str>) -> bool {
         // By default, all logs are enabled

opentelemetry-sdk/src/logs/logger.rs

@@ -1,7 +1,6 @@
 use super::{SdkLogRecord, SdkLoggerProvider, TraceContext};
 use opentelemetry::{trace::TraceContextExt, Context, InstrumentationScope};
 
-#[cfg(feature = "spec_unstable_logs_enabled")]
 use opentelemetry::logs::Severity;
 use opentelemetry::time::now;
 
@@ -52,7 +51,6 @@ impl opentelemetry::logs::Logger for SdkLogger {
         }
     }
 
-    #[cfg(feature = "spec_unstable_logs_enabled")]
     #[inline]
     fn event_enabled(&self, level: Severity, target: &str, name: Option<&str>) -> bool {
         if Context::is_current_telemetry_suppressed() {

opentelemetry-sdk/src/logs/simple_log_processor.rs

@@ -134,7 +134,6 @@ impl<T: LogExporter> LogProcessor for SimpleLogProcessor<T> {
         }
     }
 
-    #[cfg(feature = "spec_unstable_logs_enabled")]
     #[inline]
     fn event_enabled(
         &self,

opentelemetry-stdout/Cargo.toml

@@ -24,7 +24,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 default = ["trace", "metrics", "logs"]
 trace = ["opentelemetry/trace", "opentelemetry_sdk/trace"]
 metrics = ["opentelemetry/metrics", "opentelemetry_sdk/metrics"]
-logs = ["opentelemetry/logs", "opentelemetry_sdk/logs", "opentelemetry_sdk/spec_unstable_logs_enabled"]
+logs = ["opentelemetry/logs", "opentelemetry_sdk/logs"]
 
 [dependencies]
 chrono = { workspace = true, features = ["now"] }

opentelemetry/CHANGELOG.md

@@ -3,6 +3,7 @@
 ## vNext
 
 - Add `get_all` method to `opentelemetry::propagation::Extractor` to return all values of the given propagation key and provide a default implementation.
+- **Breaking** Remove `spec_unstable_logs_enabled` feature flag - logger.enabled functionality is now always available.
 
 ## 0.30.0
 

opentelemetry/Cargo.toml

@@ -38,11 +38,10 @@ trace = ["futures", "thiserror"]
 metrics = []
 testing = ["trace"]
 logs = []
-spec_unstable_logs_enabled = ["logs"]
 internal-logs = ["tracing"]
 
 [dev-dependencies]
-opentelemetry_sdk = { path = "../opentelemetry-sdk", features = ["spec_unstable_logs_enabled"]} # for documentation tests
+opentelemetry_sdk = { path = "../opentelemetry-sdk"} # for documentation tests
 criterion = { workspace = true }
 rand = { workspace = true, features = ["os_rng", "thread_rng"] }
 tokio = { version = "1.0", features = ["full"] }

opentelemetry/src/lib.rs

@@ -163,9 +163,6 @@
 //!
 //! The default feature flags are ["trace", "metrics", "logs", "internal-logs"].
 //!
-//! The following feature flags provides additional configuration for `logs`:
-//! * `spec_unstable_logs_enabled`: Allow users to control the log level
-//!
 //! The following feature flags enable APIs defined in OpenTelemetry specification that is in experimental phase:
 //! * `otel_unstable`: Includes unstable APIs. There are no features behind this flag at the moment.
 //!

opentelemetry/src/logs/logger.rs

@@ -1,8 +1,6 @@
 use std::borrow::Cow;
 
 use crate::{logs::LogRecord, InstrumentationScope};
-
-#[cfg(feature = "spec_unstable_logs_enabled")]
 use super::Severity;
 
 /// The interface for emitting [`LogRecord`]s.
@@ -19,7 +17,6 @@ pub trait Logger {
     /// [`Context`]: crate::Context
     fn emit(&self, record: Self::LogRecord);
 
-    #[cfg(feature = "spec_unstable_logs_enabled")]
     /// Check if the given log level is enabled.
     fn event_enabled(&self, level: Severity, target: &str, name: Option<&str>) -> bool;
 }

opentelemetry/src/logs/noop.rs

@@ -78,7 +78,6 @@ impl Logger for NoopLogger {
         NoopLogRecord {}
     }
     fn emit(&self, _record: Self::LogRecord) {}
-    #[cfg(feature = "spec_unstable_logs_enabled")]
     fn event_enabled(&self, _level: super::Severity, _target: &str, _name: Option<&str>) -> bool {
         false
     }

scripts/lint.sh

@@ -21,7 +21,7 @@ if rustup component add clippy && \
   cargo clippy --manifest-path=opentelemetry-prometheus/Cargo.toml --all-targets --all-features -- \
     -Dwarnings
 
-  cargo_feature opentelemetry "trace,metrics,logs,spec_unstable_logs_enabled,testing"
+  cargo_feature opentelemetry "trace,metrics,logs,testing"
 
   cargo_feature opentelemetry-otlp "default"
   cargo_feature opentelemetry-otlp "default,tls"

stress/Cargo.toml

@@ -53,9 +53,9 @@ bench = false
 ctrlc = { workspace = true }
 lazy_static = { workspace = true }
 num_cpus = { workspace = true }
-opentelemetry = { path = "../opentelemetry", features = ["metrics", "logs", "trace", "spec_unstable_logs_enabled"] }
-opentelemetry_sdk = { path = "../opentelemetry-sdk", features = ["metrics", "logs", "trace", "spec_unstable_logs_enabled", "experimental_logs_concurrent_log_processor", "experimental_metrics_custom_reader"] }
-opentelemetry-appender-tracing = { workspace = true, features = ["spec_unstable_logs_enabled"] }
+opentelemetry = { path = "../opentelemetry", features = ["metrics", "logs", "trace"] }
+opentelemetry_sdk = { path = "../opentelemetry-sdk", features = ["metrics", "logs", "trace", "experimental_logs_concurrent_log_processor", "experimental_metrics_custom_reader"] }
+opentelemetry-appender-tracing = { workspace = true }
 rand = { workspace = true, features = ["small_rng", "os_rng"] }
 tracing = { workspace = true, features = ["std"]}
 tracing-subscriber = { workspace = true, features = ["registry", "std"] }