feat(formatting): add parsing of a json object

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tracing_sprout"
-version = "0.1.0-alpha.5"
+version = "0.1.0-alpha.6"
 authors = ["Naaman Curtis <[email protected]>"]
 edition = "2018"
 description = "A tokio-rs/tracing structured JSON formatting layer for the fledgling logger"

src/formatting.rs

@@ -102,7 +102,7 @@ where
                 let _ = self.emit(serialized);
             }
         } else {
-            eprintln!("[SPROUT]: Expected to find Span ID when creating a new span. \n\tThis is likely a bug");
+            tracing::error!(target: "sprout", "Expected to find Span ID when creating a new span. This is likely a bug");
         }
     }
 
@@ -112,10 +112,10 @@ where
             if let Some(visitor) = extensions.get_mut::<SproutStorage>() {
                 values.record(visitor);
             } else {
-                eprintln!("[SPROUT]: Expected to find Sprout Storage located in the span when recording new attributes.\n\tThis is likely a bug");
+                tracing::error!(target: "sprout", "Expected to find Sprout Storage located in the span when recording new attributes. This is likely a bug");
             }
         } else {
-            eprintln!("[SPROUT]: Expected to find Span ID when recording span attributes.\n\tThis is likely a bug");
+            tracing::error!(target: "sprout","Expected to find Span ID when recording span attributes. This is likely a bug");
         }
     }
 
@@ -125,11 +125,11 @@ where
             if let Some(visitor) = extensions.get_mut::<SproutStorage>() {
                 visitor.entered_at = Some(Instant::now());
             } else {
-                eprintln!("[SPROUT]: Expected to find Sprout Storage located in the span when entering it.\n\tThis is likely a bug");
+                tracing::error!(target: "sprout", "Expected to find Sprout Storage located in the span when entering it. This is likely a bug");
             }
         } else {
-            eprintln!(
-                "[SPROUT]: Expected to find Span ID when entering span.\n\tThis is likely a bug"
+            tracing::error!(target: "sprout",
+                "Expected to find Span ID when entering span. This is likely a bug"
             );
         }
     }
@@ -148,8 +148,8 @@ where
         if let Ok(bytes) = serialize_span(visitor.attributes, metadata, Type::Event) {
             let _ = self.emit(bytes);
         } else {
-            eprintln!(
-                "[SPROUT]: Was unable to write event bytes to the writer.\n\tThis is likely a bug"
+            tracing::error!(target: "sprout",
+                "Was unable to write event bytes to the writer. This is likely a bug"
             );
         }
     }
@@ -171,8 +171,8 @@ where
                 }
             };
         } else {
-            eprintln!(
-                "[SPROUT]: Expected to find Span ID when closing span.\n\tThis is likely a bug"
+            tracing::error!(target: "sprout",
+                "Expected to find Span ID when closing span. This is likely a bug"
             );
         }
     }

src/storage.rs

@@ -89,9 +89,11 @@ impl Visit for SproutStorage {
             }
             name => {
                 let val = format!("{:?}", value);
-                let val = if val.starts_with('[') && val.ends_with(']') {
+                let val = if (val.starts_with('[') && val.ends_with(']'))
+                    || (val.starts_with('{') && val.ends_with('}'))
+                {
                     match json::parse(&val) {
-                        Ok(arr) => arr,
+                        Ok(o) => o,
                         Err(_) => val.into(),
                     }
                 } else {