Introduce tracing for log

Cargo.toml

@@ -24,3 +24,5 @@ console = "0.15.8"
 aws-smithy-runtime-api = "1.7.1"
 aws-smithy-types = "1.2.0"
 anyhow = "1.0.86"
+tracing = "0.1.40"
+tracing-subscriber = "0.3.18"

src/cli.rs

@@ -27,6 +27,9 @@ pub enum Commands {
         /// Specify path to diff result as json
         #[clap(long = "diff-as-json", short = 'o', value_name = "output path")]
         json_diff_path: Option<String>,
+        /// Emit logs for debugging
+        #[clap(long = "debug")]
+        debug_mode: bool,
     },
     /// plan config
     Plan {
@@ -42,6 +45,9 @@ pub enum Commands {
         /// Specify path to diff result as json
         #[clap(long = "diff-as-json", short = 'o', value_name = "output path")]
         json_diff_path: Option<String>,
+        /// Emit logs for debugging
+        #[clap(long = "debug")]
+        debug_mode: bool,
     },
     /// import state machine to specified config file
     Import {
@@ -60,6 +66,9 @@ pub enum Commands {
             value_name = "group-name/schedule-name"
         )]
         schedule_name_with_group: Option<String>,
+        /// Emit logs for debugging
+        #[clap(long = "debug")]
+        debug_mode: bool,
     },
 }
 

src/main.rs

@@ -10,6 +10,19 @@ use fubura::context::FuburaContext;
 use fubura::fast_exit;
 use fubura::types::Config;
 
+fn set_log_level(debug_mode: &bool) {
+    let level = if *debug_mode {
+        tracing::Level::DEBUG
+    } else {
+        tracing::Level::INFO
+    };
+
+    let subscriber = tracing_subscriber::FmtSubscriber::builder()
+        .with_max_level(level)
+        .finish();
+    tracing::subscriber::set_global_default(subscriber).expect("setting default subscriber failed");
+}
+
 #[tokio::main]
 async fn main() {
     let cli = Cli::parse();
@@ -21,7 +34,10 @@ async fn main() {
             ext_str,
             target,
             json_diff_path,
+            debug_mode,
         } => {
+            set_log_level(debug_mode);
+
             let config = Config::load_from_path(config_path, ext_str);
             let mut context = FuburaContext::async_default().await;
             context.targets.clone_from(target);
@@ -34,7 +50,10 @@ async fn main() {
             ext_str,
             target,
             json_diff_path,
+            debug_mode,
         } => {
+            set_log_level(debug_mode);
+
             let config = Config::load_from_path(config_path, ext_str);
             let mut context = FuburaContext::async_default().await;
             context.targets.clone_from(target);
@@ -47,7 +66,10 @@ async fn main() {
             ext_str,
             sfn_name,
             schedule_name_with_group,
+            debug_mode,
         } => {
+            set_log_level(debug_mode);
+
             let config_exist = Path::new(config_path).exists();
             let config = if config_exist {
                 Config::load_from_path(config_path, ext_str)