feat: add opt_value

src/main.rs

@@ -35,14 +35,20 @@ lazy_static!{
     static ref CHECK_FAIL_MAP: Mutex<HashMap<String, u64>> = Mutex::new(HashMap::new());
 }
 
+macro_rules! opt_value {
+    ($e: expr) => {
+        match $e {
+            Some(o) => o,
+            None => return,
+        }
+    }
+}
 
 fn main() {
     panic::set_hook(Box::new(|panic_info| {
         error!("Panic in running keeprunningd: {:?}", panic_info);
     }));
-    let keep_running_config = match parse_keep_running_config() {
-        Some(c) => c, None => return,
-    };
+    let keep_running_config = opt_value!(parse_keep_running_config());
 
     let mut the_file_lock = None;
     if let Some(ref lock_file) = keep_running_config.lock_file {