tracing: Add a bunch of TRACE level tracing

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

1 files changed, 17 insertions, 3 deletions

diff --git a/src/bin/cli/mod.rs b/src/bin/cli/mod.rs
index c686cab..5da5bf9 100644
--- a/src/bin/cli/mod.rs
+++ b/src/bin/cli/mod.rs
@@ -4,15 +4,29 @@
 
 use anyhow::Result;
 use serde::Serialize;
-use subplot::{DataFile, Document, Style, SubplotError};
-
 use std::convert::TryFrom;
+use std::fmt::Debug;
 use std::path::Path;
 use std::str::FromStr;
+use subplot::{DataFile, Document, Style, SubplotError};
+use tracing::{event, instrument, Level};
 
-pub fn load_document<P: AsRef<Path>>(filename: P, style: Style) -> Result<Document> {
+#[instrument(level = "trace")]
+pub fn load_document<P>(filename: P, style: Style) -> Result<Document>
+where
+    P: AsRef<Path> + Debug,
+{
     let filename = filename.as_ref();
     let base_path = subplot::get_basedir_from(filename);
+    event!(
+        Level::TRACE,
+        ?filename,
+        ?base_path,
+        "Loading document based at `{}` called `{}` with {:?}",
+        base_path.display(),
+        filename.display(),
+        style
+    );
     let doc = Document::from_file(&base_path, filename, style)?;
 
     Ok(doc)