Log - modify export/processor to not require mutable self in shutdown and set-resource

opentelemetry-otlp/src/exporter/http/logs.rs

@@ -52,7 +52,7 @@ impl LogExporter for OtlpHttpClient {
         }
     }
 
-    fn shutdown(&mut self) -> OTelSdkResult {
+    fn shutdown(&self) -> OTelSdkResult {
         let mut client_guard = self.client.lock().map_err(|e| {
             OTelSdkError::InternalFailure(format!("Failed to acquire client lock: {}", e))
         })?;
@@ -64,7 +64,7 @@ impl LogExporter for OtlpHttpClient {
         Ok(())
     }
 
-    fn set_resource(&mut self, resource: &opentelemetry_sdk::Resource) {
+    fn set_resource(&self, resource: &opentelemetry_sdk::Resource) {
         self.resource = resource.into();
     }
 }

opentelemetry-sdk/src/logs/export.rs

@@ -136,15 +136,15 @@ pub trait LogExporter: Send + Sync + Debug {
     ) -> impl std::future::Future<Output = OTelSdkResult> + Send;
 
     /// Shuts down the exporter.
-    fn shutdown(&mut self) -> OTelSdkResult {
+    fn shutdown(&self) -> OTelSdkResult {
         Ok(())
     }
     #[cfg(feature = "spec_unstable_logs_enabled")]
-    /// Chek if logs are enabled.
+    /// Check if logs are enabled.
     fn event_enabled(&self, _level: Severity, _target: &str, _name: &str) -> bool {
         // By default, all logs are enabled
         true
     }
     /// Set the resource for the exporter.
-    fn set_resource(&mut self, _resource: &Resource) {}
+    fn set_resource(&self, _resource: &Resource) {}
 }

opentelemetry-sdk/src/logs/in_memory_exporter.rs

@@ -208,14 +208,14 @@ impl LogExporter for InMemoryLogExporter {
         }
     }
 
-    fn shutdown(&mut self) -> OTelSdkResult {
+    fn shutdown(&self) -> OTelSdkResult {
         if self.should_reset_on_shutdown {
             self.reset();
         }
         Ok(())
     }
 
-    fn set_resource(&mut self, resource: &Resource) {
+    fn set_resource(&self, resource: &Resource) {
         let mut res_guard = self.resource.lock().expect("Resource lock poisoned");
         *res_guard = resource.clone();
     }

opentelemetry-sdk/src/logs/log_processor.rs

@@ -135,53 +135,31 @@ pub trait LogProcessor: Send + Sync + Debug {
 /// ```
 #[derive(Debug)]
 pub struct SimpleLogProcessor<T: LogExporter> {
-    exporter: Mutex<T>,
-    is_shutdown: AtomicBool,
+    exporter: T,
 }
 
 impl<T: LogExporter> SimpleLogProcessor<T> {
     pub(crate) fn new(exporter: T) -> Self {
         SimpleLogProcessor {
-            exporter: Mutex::new(exporter),
-            is_shutdown: AtomicBool::new(false),
+            exporter: exporter
         }
     }
 }
 
 impl<T: LogExporter> LogProcessor for SimpleLogProcessor<T> {
     fn emit(&self, record: &mut SdkLogRecord, instrumentation: &InstrumentationScope) {
-        // noop after shutdown
-        if self.is_shutdown.load(std::sync::atomic::Ordering::Relaxed) {
-            // this is a warning, as the user is trying to log after the processor has been shutdown
-            otel_warn!(
-                name: "SimpleLogProcessor.Emit.ProcessorShutdown",
+        let log_tuple = &[(record as &SdkLogRecord, instrumentation)];
+        let result = futures_executor::block_on(self.exporter.export(LogBatch::new(log_tuple)));
+        if result.is_err() {
+            otel_error!(
+                name: "SimpleLogProcessor.Emit.ExportError",
+                error = format!("{}", result.err().unwrap())
             );
-            return;
         }
-
-        let result = self
-            .exporter
-            .lock()
-            .map_err(|_| OTelSdkError::InternalFailure("SimpleLogProcessor mutex poison".into()))
-            .and_then(|exporter| {
-                let log_tuple = &[(record as &SdkLogRecord, instrumentation)];
-                futures_executor::block_on(exporter.export(LogBatch::new(log_tuple)))
-            });
-        // Handle errors with specific static names
-        match result {
-            Err(OTelSdkError::InternalFailure(_)) => {
-                // logging as debug as this is not a user error
-                otel_debug!(
-                    name: "SimpleLogProcessor.Emit.MutexPoisoning",
-                );
-            }
-            Err(err) => {
-                otel_error!(
-                    name: "SimpleLogProcessor.Emit.ExportError",
-                    error = format!("{}",err)
-                );
-            }
-            _ => {}
+        else {
+            otel_debug!(
+                name: "SimpleLogProcessor.Emit.Success",
+            );
         }
     }
 
@@ -190,21 +168,11 @@ impl<T: LogExporter> LogProcessor for SimpleLogProcessor<T> {
     }
 
     fn shutdown(&self) -> OTelSdkResult {
-        self.is_shutdown
-            .store(true, std::sync::atomic::Ordering::Relaxed);
-        if let Ok(mut exporter) = self.exporter.lock() {
-            exporter.shutdown()
-        } else {
-            Err(OTelSdkError::InternalFailure(
-                "SimpleLogProcessor mutex poison at shutdown".into(),
-            ))
-        }
+        self.exporter.shutdown()
     }
 
     fn set_resource(&self, resource: &Resource) {
-        if let Ok(mut exporter) = self.exporter.lock() {
-            exporter.set_resource(resource);
-        }
+        self.exporter.set_resource(resource);
     }
 }
 
@@ -481,7 +449,7 @@ impl LogProcessor for BatchLogProcessor {
 }
 
 impl BatchLogProcessor {
-    pub(crate) fn new<E>(mut exporter: E, config: BatchConfig) -> Self
+    pub(crate) fn new<E>(exporter: E, config: BatchConfig) -> Self
     where
         E: LogExporter + Send + Sync + 'static,
     {
@@ -909,11 +877,11 @@ mod tests {
             async { Ok(()) }
         }
 
-        fn shutdown(&mut self) -> OTelSdkResult {
+        fn shutdown(&self) -> OTelSdkResult {
             Ok(())
         }
 
-        fn set_resource(&mut self, resource: &Resource) {
+        fn set_resource(&self, resource: &Resource) {
             self.resource
                 .lock()
                 .map(|mut res_opt| {
@@ -1171,17 +1139,14 @@ mod tests {
         let instrumentation: InstrumentationScope = Default::default();
 
         processor.emit(&mut record, &instrumentation);
-
         processor.shutdown().unwrap();
 
-        let is_shutdown = processor
-            .is_shutdown
-            .load(std::sync::atomic::Ordering::Relaxed);
-        assert!(is_shutdown);
-
+        // Emit after shutdown.
         processor.emit(&mut record, &instrumentation);
 
-        assert_eq!(1, exporter.get_emitted_logs().unwrap().len())
+        // SimpleProcessor does not do anything to check if logs
+        // are flowing after shutdown.
+        assert_eq!(2, exporter.get_emitted_logs().unwrap().len())
     }
 
     #[tokio::test(flavor = "current_thread")]

opentelemetry-sdk/src/logs/log_processor_with_async_runtime.rs

@@ -325,11 +325,11 @@ mod tests {
             async { Ok(()) }
         }
 
-        fn shutdown(&mut self) -> OTelSdkResult {
+        fn shutdown(&self) -> OTelSdkResult {
             Ok(())
         }
 
-        fn set_resource(&mut self, resource: &Resource) {
+        fn set_resource(&self, resource: &Resource) {
             self.resource
                 .lock()
                 .map(|mut res_opt| {

opentelemetry-stdout/Cargo.toml

@@ -40,6 +40,6 @@ opentelemetry_sdk = { path = "../opentelemetry-sdk", features = ["rt-tokio", "me
 opentelemetry-appender-tracing = { path = "../opentelemetry-appender-tracing"}
 opentelemetry-semantic-conventions = { path = "../opentelemetry-semantic-conventions" }
 tracing = { workspace = true, features = ["std"]}
-tracing-subscriber = { workspace = true, features = ["registry", "std"] }
+tracing-subscriber = { workspace = true, features = ["env-filter","registry", "std"] }
 tokio = { workspace = true, features = ["full"] }
 once_cell = { workspace = true }

opentelemetry-stdout/examples/basic.rs

@@ -45,15 +45,22 @@ fn init_metrics() -> opentelemetry_sdk::metrics::SdkMeterProvider {
 fn init_logs() -> opentelemetry_sdk::logs::SdkLoggerProvider {
     use opentelemetry_appender_tracing::layer;
     use opentelemetry_sdk::logs::SdkLoggerProvider;
-    use tracing_subscriber::prelude::*;
+    use tracing_subscriber::{prelude::*, EnvFilter};
 
     let exporter = opentelemetry_stdout::LogExporter::default();
     let provider: SdkLoggerProvider = SdkLoggerProvider::builder()
         .with_simple_exporter(exporter)
         .with_resource(RESOURCE.clone())
         .build();
+    let filter_otel = EnvFilter::new("info")
+    .add_directive("hyper=off".parse().unwrap())
+    .add_directive("opentelemetry=off".parse().unwrap())
+    .add_directive("tonic=off".parse().unwrap())
+    .add_directive("h2=off".parse().unwrap())
+    .add_directive("reqwest=off".parse().unwrap());
     let layer = layer::OpenTelemetryTracingBridge::new(&provider);
-    tracing_subscriber::registry().with(layer).init();
+    let otel_layer = layer.with_filter(filter_otel);
+    tracing_subscriber::registry().with(otel_layer).init();
     provider
 }
 

opentelemetry-stdout/src/logs/exporter.rs

@@ -3,20 +3,20 @@ use core::fmt;
 use opentelemetry_sdk::error::{OTelSdkError, OTelSdkResult};
 use opentelemetry_sdk::logs::LogBatch;
 use opentelemetry_sdk::Resource;
-use std::sync::atomic;
+use std::sync::{atomic, Mutex};
 use std::sync::atomic::Ordering;
 
 /// An OpenTelemetry exporter that writes Logs to stdout on export.
 pub struct LogExporter {
-    resource: Resource,
+    resource: Mutex<Resource>,
     is_shutdown: atomic::AtomicBool,
     resource_emitted: atomic::AtomicBool,
 }
 
 impl Default for LogExporter {
     fn default() -> Self {
         LogExporter {
-            resource: Resource::builder().build(),
+            resource: Mutex::new(Resource::builder().build()),
             is_shutdown: atomic::AtomicBool::new(false),
             resource_emitted: atomic::AtomicBool::new(false),
         }
@@ -49,10 +49,11 @@ impl opentelemetry_sdk::logs::LogExporter for LogExporter {
                     print_logs(batch);
                 } else {
                     println!("Resource");
-                    if let Some(schema_url) = self.resource.schema_url() {
+                    let resource = self.resource.lock().unwrap();
+                    if let Some(schema_url) = resource.schema_url() {
                         println!("\t Resource SchemaUrl: {:?}", schema_url);
                     }
-                    self.resource.iter().for_each(|(k, v)| {
+                    resource.iter().for_each(|(k, v)| {
                         println!("\t ->  {}={:?}", k, v);
                     });
                     print_logs(batch);
@@ -63,13 +64,14 @@ impl opentelemetry_sdk::logs::LogExporter for LogExporter {
         }
     }
 
-    fn shutdown(&mut self) -> OTelSdkResult {
+    fn shutdown(&self) -> OTelSdkResult {
         self.is_shutdown.store(true, atomic::Ordering::SeqCst);
         Ok(())
     }
 
-    fn set_resource(&mut self, res: &opentelemetry_sdk::Resource) {
-        self.resource = res.clone();
+    fn set_resource(&self, res: &opentelemetry_sdk::Resource) {
+        let mut res_guard = self.resource.lock().unwrap();
+        *res_guard = res.clone();
     }
 }