logging: change remote log serialization format to string for more efficient sending

Author: nick1udwig

src/logging.rs

@@ -42,7 +42,14 @@ pub struct TerminalWriterMaker {
 
 impl std::io::Write for RemoteWriter {
     fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
-        let body = serde_json::json!({"Log": buf});
+        let log = if let Ok(json_log) = serde_json::from_slice(buf) {
+            serde_json::to_string(&json_log).unwrap()
+        } else {
+            let string = String::from_utf8(buf.to_vec())
+                .map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidData, e))?;
+            string
+        };
+        let body = serde_json::json!({"Log": log});
         let body = serde_json::to_vec(&body).unwrap();
         Request::to(&self.target).body(body).send().unwrap();
         Ok(buf.len())