feature: showcase log appender

Author: tyrchen

Cargo.lock

@@ -11,3 +11,6 @@ arc-swap = "1.7.1"
 crossbeam-channel = "0.5.12"
 serde = { version = "1.0.203", features = ["derive"] }
 serde_yaml = "0.9.34"
+tracing = "0.1.40"
+tracing-appender = "0.2.3"
+tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }

Cargo.toml

@@ -0,0 +1,20 @@
+use tracing::{info, Level};
+use tracing_subscriber::fmt::writer::MakeWriterExt;
+
+fn main() {
+    // Create rolling file appenders for different log levels
+    let info =
+        tracing_appender::rolling::daily("/tmp/logs", "info.log").with_max_level(Level::INFO);
+    let error =
+        tracing_appender::rolling::daily("/tmp/logs", "error.log").with_max_level(Level::ERROR);
+    // Create a log file writer that directs `INFO` logs to `info.log` and `ERROR` logs to `error.log`
+    let stdout = std::io::stdout.with_max_level(tracing::Level::INFO);
+
+    tracing_subscriber::fmt()
+        .with_writer(stdout.and(info).and(error))
+        .init();
+
+    // Example log messages
+    info!("This is an info message");
+    tracing::error!("This is an error message");
+}