feat(tracing): get user to provide pkg name

src/tracing.rs

@@ -1,17 +1,13 @@
 use std::path::Path;
 
-use const_format::formatcp;
 use tracing::level_filters::LevelFilter;
 use tracing_appender::non_blocking::WorkerGuard;
 use tracing_subscriber::layer::SubscriberExt;
 use tracing_subscriber::util::SubscriberInitExt;
 use tracing_subscriber::{EnvFilter, Layer};
 
-const DEFAULT_FILE_DIRECTIVE: &str = formatcp!("info,{}=debug", env!("CARGO_PKG_NAME"));
-const LOG_FILE_NAME: &str = formatcp!("{}.log", env!("CARGO_PKG_NAME"));
-
 #[must_use]
-pub fn setup_tracing(log_directory: Option<&Path>) -> Option<WorkerGuard> {
+pub fn setup_tracing(pkg_name: &str, log_directory: Option<&Path>) -> Option<WorkerGuard> {
     // Setup stdout layer.
     let stdout_filter = EnvFilter::builder()
         .with_env_var("RUST_LOG")
@@ -25,12 +21,13 @@ pub fn setup_tracing(log_directory: Option<&Path>) -> Option<WorkerGuard> {
     // Setup file layer (if requested).
     let (file_layer, file_guard) = log_directory
         .map(|directory| {
-            let file_appender = tracing_appender::rolling::hourly(directory, LOG_FILE_NAME);
+            let file_appender =
+                tracing_appender::rolling::hourly(directory, format!("{pkg_name}.log"));
             let (file_writer, file_guard) = tracing_appender::non_blocking(file_appender);
 
             // Load the user's file filter else fallback to the default.
             let file_filter = std::env::var("RUST_FILE_LOG").ok();
-            let file_filter = file_filter.as_deref().unwrap_or(DEFAULT_FILE_DIRECTIVE);
+            let file_filter = file_filter.unwrap_or_else(|| format!("info,{pkg_name}=debug"));
             let file_filter: EnvFilter = file_filter.parse().unwrap();
 
             let file_layer = tracing_subscriber::fmt::layer()