original indent behaviour

Author: dingxiangfei2009

examples/basic.rs

@@ -2,6 +2,12 @@ use tracing::{debug, error, info, instrument, span, warn, Level};
 use tracing_subscriber::{layer::SubscriberExt, registry::Registry};
 use tracing_tree::HierarchicalLayer;
 
+#[derive(Debug)]
+struct PrettyPrintMe {
+    value_a: u32,
+    value_b: String,
+}
+
 fn main() {
     let layer = HierarchicalLayer::default()
         .with_writer(std::io::stdout)
@@ -50,6 +56,18 @@ fn main() {
         error!("hello");
     });
     drop(peer3);
+    let val = format!(
+        "{:#?}",
+        PrettyPrintMe {
+            value_a: 42,
+            value_b: "hello".into(),
+        }
+    );
+    let peer3 = span!(Level::TRACE, "", val = %val);
+    peer3.in_scope(|| {
+        error!("hello");
+    });
+    drop(peer3);
     let peer1 = span!(Level::TRACE, "conn", peer_addr = "82.9.9.9", port = 42381);
     peer1.in_scope(|| {
         warn!(algo = "xor", "weak encryption requested");

examples/basic.stdout

@@ -20,6 +20,17 @@
 1:main   ┌┘basic::foomp 42 <- format string, normal_var=43
 1:main  ┌┘basic::server host="localhost", port=8080
 1:main  └┐basic::server host="localhost", port=8080
+1:main   └┐basic:: val=PrettyPrintMe {
+1:main  │     value_a: 42,
+1:main  │     value_b: "hello",
+1:main  │ }
+1:main    ├─ ERROR basic hello
+1:main   ┌┘basic:: val=PrettyPrintMe {
+1:main  │     value_a: 42,
+1:main  │     value_b: "hello",
+1:main  │ }
+1:main  ┌┘basic::server host="localhost", port=8080
+1:main  └┐basic::server host="localhost", port=8080
 1:main   └┐basic::conn peer_addr="82.9.9.9", port=42381
 1:main    ├─ WARN basic weak encryption requested, algo="xor"
 1:main    ├─ DEBUG basic response sent, length=8

examples/no-indent.rs

@@ -2,6 +2,12 @@ use tracing::{debug, error, info, instrument, span, warn, Level};
 use tracing_subscriber::{layer::SubscriberExt, registry::Registry};
 use tracing_tree::HierarchicalLayer;
 
+#[derive(Debug)]
+struct PrettyPrintMe {
+    value_a: u32,
+    value_b: String,
+}
+
 fn main() {
     let layer = HierarchicalLayer::default()
         .with_writer(std::io::stdout)
@@ -47,6 +53,18 @@ fn main() {
         error!("hello");
     });
     drop(peer3);
+    let val = format!(
+        "{:#?}",
+        PrettyPrintMe {
+            value_a: 42,
+            value_b: "hello".into(),
+        }
+    );
+    let peer3 = span!(Level::TRACE, "", val = %val);
+    peer3.in_scope(|| {
+        error!("hello");
+    });
+    drop(peer3);
     let peer1 = span!(Level::TRACE, "conn", peer_addr = "82.9.9.9", port = 42381);
     peer1.in_scope(|| {
         warn!(algo = "xor", "weak encryption requested");

examples/no-indent.stdout

@@ -9,6 +9,11 @@
 1:main      DEBUG no_indent connected
 1:main     no_indent::foomp 42 <- format string, normal_var=43
 1:main      ERROR no_indent hello
+1:main     no_indent:: val=PrettyPrintMe {
+1:main         value_a: 42,
+1:main         value_b: "hello",
+1:main     }
+1:main      ERROR no_indent hello
 1:main     no_indent::conn peer_addr="82.9.9.9", port=42381
 1:main      WARN no_indent weak encryption requested, algo="xor"
 1:main      DEBUG no_indent response sent, length=8