Go back to the custom tracing subscriber, adding a filter for spammy …

…dependencies. #11

src/main.rs

@@ -18,11 +18,7 @@ const DEFAULT_CASES_PER_MSOA: usize = 5;
 
 #[tokio::main]
 async fn main() -> Result<()> {
-    let subscriber = tracing_subscriber::FmtSubscriber::builder()
-        .with_max_level(tracing::Level::DEBUG)
-        .finish();
-    tracing::subscriber::set_global_default(subscriber).expect("setting default subscriber failed");
-    //ramp::tracing_span_tree::SpanTree::new().enable();
+    ramp::tracing_span_tree::SpanTree::new().enable();
 
     let args = Args::parse();
 

src/tracing_span_tree.rs

@@ -22,7 +22,11 @@ impl SpanTree {
 
     /// Set as a global subscriber
     pub fn enable(self) {
-        let subscriber = Registry::default().with(self);
+        // Ignore everything except our own code. hyper and reqwest are very spammy.
+        // TODO Filter more carefully -- anything >= INFO from other crates is probably fine
+        let subscriber = Registry::default().with(self.with_filter(
+            tracing_subscriber::filter::filter_fn(|metadata| metadata.target().starts_with("ramp")),
+        ));
         tracing::subscriber::set_global_default(subscriber)
             .unwrap_or_else(|_| debug!("Global subscriber is already set"));
     }