add timeTaken to query response

src/handlers/http/query.rs

@@ -67,6 +67,7 @@ pub struct Query {
 }
 
 pub async fn query(req: HttpRequest, query_request: Query) -> Result<HttpResponse, QueryError> {
+    let start = Instant::now();
     let session_state = QUERY_SESSION.state();
     let raw_logical_plan = match session_state
         .create_logical_plan(&query_request.query)
@@ -132,12 +133,13 @@ pub async fn query(req: HttpRequest, query_request: Query) -> Result<HttpRespons
     }
 
     let (records, fields) = execute(query, &table_name).await?;
-
+    let total_time = format!("{:?}", start.elapsed());
     let response = QueryResponse {
         records,
         fields,
         fill_null: query_request.send_null,
         with_fields: query_request.fields,
+        total_time,
     }
     .to_http()?;
 

src/response.rs

@@ -28,6 +28,7 @@ pub struct QueryResponse {
     pub fields: Vec<String>,
     pub fill_null: bool,
     pub with_fields: bool,
+    pub total_time: String,
 }
 
 impl QueryResponse {
@@ -49,10 +50,14 @@ impl QueryResponse {
         let response = if self.with_fields {
             json!({
                 "fields": self.fields,
-                "records": values
+                "records": values,
+                "totalTime": self.total_time
             })
         } else {
-            Value::Array(values)
+            json!({
+                "records": values,
+                "totalTime": self.total_time
+            })
         };
 
         Ok(HttpResponse::Ok().json(response))