feat(macros) add panic_with_log

backend/macros/Cargo.toml

@@ -4,3 +4,5 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+tracing = "0.1.40"
+tracing-subscriber = "0.3.18"

backend/macros/src/lib.rs

@@ -1,14 +1 @@
-pub fn add(left: u64, right: u64) -> u64 {
-    left + right
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
-}
+mod log;

backend/macros/src/log.rs

@@ -0,0 +1,45 @@
+/// log the message at specific log level and exit(1)
+///
+/// # Example
+/// ```rust
+///
+/// use macros::panic_with_log;
+/// use tracing::Level;
+///
+/// panic_with_log!(Level::ERROR, "Test panicked: {}", 42);
+/// ```
+#[macro_export]
+macro_rules! panic_with_log {
+    ($level:expr, $msg:literal $(, $($arg:tt)*)?) => {{
+        use std::process;
+        use tracing::event;
+        event!($level, $msg $(, $($arg)*)?);
+        process::exit(1);
+    }};
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_panic_with_log() {
+        use std::io;
+        use tracing::Level;
+        use tracing_subscriber::prelude::*;
+        use tracing_subscriber::{fmt, Registry};
+
+        let format = tracing_subscriber::fmt::format()
+            .with_level(true)
+            .with_target(true)
+            .with_source_location(true);
+
+        let subscriber = Registry::default().with(
+            fmt::Layer::default()
+                .with_writer(io::stderr)
+                .event_format(format),
+        );
+
+        tracing::subscriber::set_global_default(subscriber).unwrap();
+
+        panic_with_log!(Level::ERROR, "Test panicked: {}", 42);
+    }
+}