feat: add formatter options for location (file + line number) and mod…

…ule_path

src/formatter.rs

@@ -39,6 +39,8 @@ pub struct EventsFormatter {
     pub(crate) with_target: bool,
     pub(crate) with_span_name: bool,
     pub(crate) with_span_path: bool,
+    pub(crate) with_location: bool,
+    pub(crate) with_module_path: bool,
 }
 
 impl Default for EventsFormatter {
@@ -48,6 +50,8 @@ impl Default for EventsFormatter {
             with_target: true,
             with_span_name: true,
             with_span_path: true,
+            with_location: false,
+            with_module_path: false,
         }
     }
 }
@@ -118,6 +122,17 @@ where
                 None
             };
 
+            if self.with_location {
+                if let (Some(file), Some(line)) = (metadata.file(), metadata.line()) {
+                    serializer.serialize_entry("location", &format!("{}:{}", file, line))?;
+                }
+            }
+            if self.with_module_path {
+                if let Some(module) = metadata.module_path() {
+                    serializer.serialize_entry("module_path", module)?;
+                }
+            }
+
             if let Some(span) = span {
                 if self.with_span_name {
                     serializer.serialize_entry("span", span.name())?;
@@ -531,6 +546,60 @@ mod tests {
         assert!(content.contains(&message));
     }
 
+    #[test]
+    #[cfg(not(feature = "ansi_logs"))]
+    fn test_enable_location() {
+        use tracing::subscriber;
+
+        let mock_writer = MockMakeWriter::new();
+        let subscriber = builder::builder()
+            .with_location(true)
+            .subscriber_builder()
+            .with_writer(mock_writer.clone())
+            .finish();
+
+        subscriber::with_default(subscriber, || {
+            let _top = info_span!("top").entered();
+            let _middle = info_span!("middle").entered();
+            let _bottom = info_span!("bottom").entered();
+
+            tracing::info!("message");
+        });
+
+        let content = mock_writer.get_content();
+
+        println!("{}", content);
+        assert!(content.contains("location=src/formatter.rs:566"));
+        assert!(content.contains("info"));
+    }
+
+    #[test]
+    #[cfg(not(feature = "ansi_logs"))]
+    fn test_enable_module_path() {
+        use tracing::subscriber;
+
+        let mock_writer = MockMakeWriter::new();
+        let subscriber = builder::builder()
+            .with_module_path(true)
+            .subscriber_builder()
+            .with_writer(mock_writer.clone())
+            .finish();
+
+        subscriber::with_default(subscriber, || {
+            let _top = info_span!("top").entered();
+            let _middle = info_span!("middle").entered();
+            let _bottom = info_span!("bottom").entered();
+
+            tracing::info!("message");
+        });
+
+        let content = mock_writer.get_content();
+
+        println!("{}", content);
+        assert!(content.contains("module_path=tracing_logfmt::formatter::tests"));
+        assert!(content.contains("info"));
+    }
+
     #[cfg(feature = "ansi_logs")]
     fn make_ansi_key_value(key: &str, value: &str) -> String {
         use nu_ansi_term::Color;

src/formatter/builder.rs

@@ -53,6 +53,14 @@ impl Builder {
         self.events.with_span_path = enable;
         self
     }
+    pub fn with_location(mut self, enable: bool) -> Self {
+        self.events.with_location = enable;
+        self
+    }
+    pub fn with_module_path(mut self, enable: bool) -> Self {
+        self.events.with_module_path = enable;
+        self
+    }
 
     pub fn layer<S>(self) -> Layer<S, FieldsFormatter, EventsFormatter>
     where