chore: remove env_logger from hyper example

hawkw · hawkw · commit 84f0a608123a · 2023-10-12T12:16:57.000-07:00
Currently, the `hyper_echo` example uses the `tracing-log` env logger
support for some weird reason. I believe this is due to Hyper previously
using `log` rather than `tracing`. However, `hyper` now emits native
`tracing` diagnostics, so all the `env_logger` nonsense can just be
removed from the example.

This branch does that.
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
@@ -30,9 +30,6 @@ serde_json = "1.0.82"
 futures = "0.3.21"
 tokio = { version = "1.20.0", features = ["full"] }
 
-# env-logger example
-env_logger = "0.8.4"
-
 # tower examples
 tower = { version = "0.4.13", features = ["full"] }
 http = "0.2.8"
diff --git a/examples/examples/hyper-echo.rs b/examples/examples/hyper-echo.rs
@@ -89,18 +89,9 @@ async fn echo(req: Request<Body>) -> Result<Response<Body>, hyper::Error> {
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
-    use tracing_log::env_logger::BuilderExt;
-
-    let collector = tracing_subscriber::fmt()
+    tracing_subscriber::fmt()
         .with_max_level(Level::TRACE)
-        .finish();
-    let mut builder = env_logger::Builder::new();
-    builder
-        .filter(Some("hyper_echo"), log::LevelFilter::Off)
-        .filter(Some("hyper"), log::LevelFilter::Trace)
-        .emit_traces() // from `tracing_log::env_logger::BuilderExt`
-        .try_init()?;
-    tracing::collect::set_global_default(collector)?;
+        .init();
 
     let local_addr: std::net::SocketAddr = ([127, 0, 0, 1], 3000).into();
     let server_span = span!(Level::TRACE, "server", %local_addr);
