Remove tracing for release builds

src/main.rs

@@ -19,16 +19,11 @@ use crossterm::event::EnableBracketedPaste;
 use event::EventMessage;
 use parking_lot::RwLock;
 use ropey::Rope;
-use std::fs::File;
 use std::str::FromStr;
 use std::{
     io::{self, Write},
     sync::Arc,
 };
-use tracing::instrument;
-use tracing::Level;
-use tracing_subscriber::Layer;
-use tracing_subscriber::{filter, prelude::*};
 use tui::{
     backend::{Backend, CrosstermBackend},
     Terminal,
@@ -41,6 +36,16 @@ use crossterm::{
     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
 
+#[cfg(debug_assertions)]
+use {
+    // Tracing
+    std::fs::File,
+    tracing::instrument,
+    tracing::Level,
+    tracing_subscriber::Layer,
+    tracing_subscriber::{filter, prelude::*},
+};
+
 /// The state of options for the command
 pub struct CommandOptions {
     /// The actual command to be called
@@ -214,6 +219,7 @@ impl Template {
 }
 
 fn main() -> Result<()> {
+    #[cfg(debug_assertions)]
     enable_tracing();
 
     // Error if we aren't getting any stdin
@@ -297,7 +303,7 @@ fn init_message_passing() -> (Receiver<EventMessage>, Sender<CommandRequest>) {
 }
 
 #[allow(clippy::too_many_lines)]
-#[instrument(skip(terminal, app))]
+#[cfg_attr(debug_assertions, instrument(skip(terminal, app)))]
 fn run_app<B: Backend>(terminal: &mut Terminal<B>, app: App) -> Result<Option<String>> {
     // When starting the app, ensure the command runs at least once
     {
@@ -313,12 +319,15 @@ fn run_app<B: Backend>(terminal: &mut Terminal<B>, app: App) -> Result<Option<St
     }
 
     loop {
+        #[cfg(debug_assertions)]
         tracing::event!(Level::INFO, "Starting draw");
         terminal.draw(|f| ui::draw(f, &app))?;
 
+        #[cfg(debug_assertions)]
         tracing::event!(Level::INFO, "Waiting for event");
         match app.message_rx.recv()? {
             EventMessage::CrosstermEvent(crossterm_event) => {
+                #[cfg(debug_assertions)]
                 tracing::event!(Level::INFO, "Got crossterm event");
                 let mut command_options = app.command_options.write();
 
@@ -404,6 +413,7 @@ fn run_app<B: Backend>(terminal: &mut Terminal<B>, app: App) -> Result<Option<St
             }
 
             EventMessage::CommandCompleted(command_completed) => {
+                #[cfg(debug_assertions)]
                 tracing::event!(Level::INFO, "Got command completed event event");
                 let mut command_options = app.command_options.write();
                 match command_completed {
@@ -435,6 +445,7 @@ fn run_app<B: Backend>(terminal: &mut Terminal<B>, app: App) -> Result<Option<St
     }
 }
 
+#[cfg(debug_assertions)]
 fn enable_tracing() {
     let file = File::create("debug.log").unwrap();
     let debug_log = tracing_subscriber::fmt::layer().with_writer(Arc::new(file));