Set up tracing subscribers in benchmark example

Cargo.lock

@@ -281,6 +281,8 @@ dependencies = [
  "futures",
  "rand",
  "tokio",
+ "tracing",
+ "tracing-subscriber",
 ]
 
 [[package]]
@@ -289,6 +291,8 @@ version = "0.1.2"
 dependencies = [
  "dora-node-api",
  "eyre",
+ "tracing",
+ "tracing-subscriber",
 ]
 
 [[package]]

examples/benchmark/node/Cargo.toml

@@ -11,3 +11,5 @@ eyre = "0.6.8"
 futures = "0.3.21"
 rand = "0.8.5"
 tokio = { version = "1.20.1", features = ["rt", "macros"] }
+tracing = "0.1.36"
+tracing-subscriber = "0.3.15"

examples/benchmark/node/src/main.rs

@@ -1,9 +1,12 @@
-use std::time::Duration;
-
 use dora_node_api::{self, dora_core::config::DataId, DoraNode};
+use eyre::Context;
 use rand::Rng;
+use std::time::Duration;
+use tracing_subscriber::Layer;
 
 fn main() -> eyre::Result<()> {
+    set_up_tracing().wrap_err("failed to set up tracing subscriber")?;
+
     let latency = DataId::from("latency".to_owned());
     let throughput = DataId::from("throughput".to_owned());
 
@@ -56,3 +59,14 @@ fn main() -> eyre::Result<()> {
 
     Ok(())
 }
+
+fn set_up_tracing() -> eyre::Result<()> {
+    use tracing_subscriber::prelude::__tracing_subscriber_SubscriberExt;
+
+    let stdout_log = tracing_subscriber::fmt::layer()
+        .pretty()
+        .with_filter(tracing::metadata::LevelFilter::DEBUG);
+    let subscriber = tracing_subscriber::Registry::default().with(stdout_log);
+    tracing::subscriber::set_global_default(subscriber)
+        .context("failed to set tracing global subscriber")
+}

examples/benchmark/sink/Cargo.toml

@@ -8,3 +8,5 @@ edition = "2021"
 [dependencies]
 dora-node-api = { workspace = true }
 eyre = "0.6.8"
+tracing = "0.1.36"
+tracing-subscriber = "0.3.15"

examples/benchmark/sink/src/main.rs

@@ -1,7 +1,11 @@
 use dora_node_api::{self, daemon::Event, DoraNode};
+use eyre::Context;
 use std::time::{Duration, Instant};
+use tracing_subscriber::Layer;
 
 fn main() -> eyre::Result<()> {
+    set_up_tracing().wrap_err("failed to set up tracing subscriber")?;
+
     let (_node, mut events) = DoraNode::init_from_env()?;
 
     // latency is tested first
@@ -74,3 +78,14 @@ fn record_results(
     };
     println!("{msg}");
 }
+
+fn set_up_tracing() -> eyre::Result<()> {
+    use tracing_subscriber::prelude::__tracing_subscriber_SubscriberExt;
+
+    let stdout_log = tracing_subscriber::fmt::layer()
+        .pretty()
+        .with_filter(tracing::metadata::LevelFilter::DEBUG);
+    let subscriber = tracing_subscriber::Registry::default().with(stdout_log);
+    tracing::subscriber::set_global_default(subscriber)
+        .context("failed to set tracing global subscriber")
+}