Chore: scale down traces (#572)

* remove unneeded tracing

* bump version

* get rid of add_bid_analytics tracing

* get rid of db analytics tracing

* Revert "get rid of db analytics tracing"

This reverts commit d1bc12a.

* Revert "remove unneeded tracing"

This reverts commit a795c8d.

* Revert "get rid of add_bid_analytics tracing"

This reverts commit 6d2de93.

* sample

* address comments

Author: anihamde

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "auction-server"
-version = "0.34.0"
+version = "0.34.1"
 edition = "2021"
 license-file = "license.txt"
 

auction-server/Cargo.toml

@@ -6,7 +6,10 @@ use {
     opentelemetry::KeyValue,
     opentelemetry_otlp::WithExportConfig,
     opentelemetry_sdk::{
-        trace,
+        trace::{
+            self,
+            Sampler,
+        },
         Resource,
     },
     per_metrics::{
@@ -76,13 +79,22 @@ async fn main() -> Result<()> {
     let tracer = opentelemetry_otlp::new_pipeline()
         .tracing()
         .with_exporter(otlp_exporter)
-        .with_trace_config(trace::config().with_resource(Resource::new(vec![
-            KeyValue::new("service.name", "auction-server"),
-            KeyValue::new(
-                "service.env",
-                std::env::var("APP_ENV").unwrap_or("mainnet".to_string()),
-            ),
-        ])))
+        .with_trace_config(
+            trace::config()
+                .with_sampler(Sampler::ParentBased(Box::new(Sampler::TraceIdRatioBased(
+                    std::env::var("TRACE_RATIO")
+                        .ok()
+                        .and_then(|v| v.parse::<f64>().ok())
+                        .unwrap_or(0.05),
+                ))))
+                .with_resource(Resource::new(vec![
+                    KeyValue::new("service.name", "auction-server"),
+                    KeyValue::new(
+                        "service.env",
+                        std::env::var("APP_ENV").unwrap_or("mainnet".to_string()),
+                    ),
+                ])),
+        )
         .install_batch(opentelemetry_sdk::runtime::Tokio)
         .map_err(|e| anyhow::anyhow!("Error initializing open telemetry: {}", e))?;
     let telemetry = tracing_opentelemetry::layer().with_tracer(tracer);