feat(instrumentation): Add logging to stderr config

agent/src/main.rs

@@ -9,12 +9,15 @@ mod patagia_api;
 struct Cli {
     #[arg(long = "telemetry-otlp-endpoint", default_value = "http://localhost:4317", value_name = "OTEL_EXPORTER_OTLP_ENDPOINT")]
     otlp_endpoint: Option<String>,
+
+    #[arg(long = "log-stderr", short = 'v', default_value = "false", value_name = "LOG_TO_STDERR")]
+    log_stderr: bool
 }
 
 #[tokio::main]
 async fn main() -> Result<()> {
     let args = Cli::parse();
-    let _tracing = instrumentation::init_tracing(args.otlp_endpoint.as_ref())?;
+    let _tracing = instrumentation::init_tracing(args.otlp_endpoint.as_ref(), args.log_stderr)?;
 
     tracing::info!("Patagia Agent");
 

controller/src/bin/patagia-controller.rs

@@ -17,12 +17,15 @@ use patagia_controller::context::ControllerContext;
 struct Cli {
     #[arg(long = "telemetry-otlp-endpoint", default_value = "http://localhost:4317", value_name = "OTEL_EXPORTER_OTLP_ENDPOINT")]
     otlp_endpoint: Option<String>,
+
+    #[arg(long = "log-stderr", short = 'v', default_value = "false", value_name = "LOG_TO_STDERR")]
+    log_stderr: bool
 }
 
 #[tokio::main]
 async fn main() -> Result<()> {
     let args = Cli::parse();
-    let _tracing = instrumentation::init_tracing(args.otlp_endpoint.as_ref())?;
+    let _tracing = instrumentation::init_tracing(args.otlp_endpoint.as_ref(), args.log_stderr)?;
 
     tracing::info!("Patagia Controller");
 

instrumentation/src/lib.rs

@@ -74,11 +74,14 @@ fn init_tracer_provider(otel_endpoint: &String) -> Result<TracerProvider> {
 }
 
 // Initialize tracing-subscriber and return TracingGuard for opentelemetry-related termination processing
-pub fn init_tracing(otel_endpoint: Option<&String>) -> Result<TracingGuard> {
+pub fn init_tracing(otel_endpoint: Option<&String>, log_stderr: bool) -> Result<TracingGuard> {
     let env_filter = tracing_subscriber::EnvFilter::try_from_default_env()
         .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new(""));
 
-    let fmt_layer = tracing_subscriber::fmt::layer().with_writer(std::io::stderr);
+    let fmt_layer = match log_stderr {
+        true => Some(tracing_subscriber::fmt::layer().with_writer(std::io::stderr)),
+        false => None,
+    };
 
     let meter_provider = match otel_endpoint {
         Some(endpoint) => Some(init_meter_provider(endpoint)?),

justfile

@@ -6,7 +6,7 @@ default:
 
 # Run controller
 run-controller $RUST_LOG="debug,h2=info,hyper_util=info,tower=info":
-  cargo run --package patagia-controller
+  cargo run --package patagia-controller -- --log-stderr
 
 # Run controller local development
 dev-controller: