Added config file for db (#9)

Reviewed-on: #9
Co-authored-by: KD <kundeng94@gmail.com>
Co-committed-by: KD <kundeng94@gmail.com>

src/callers/common.rs

@@ -1,4 +1,30 @@
+use axum::{Extension, Json, http::StatusCode};
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Deserialize, Serialize)]
+pub struct TestResult {
+    message: String,
+}
+
 // basic handler that responds with a static string
 pub async fn root() -> &'static str {
     "Hello, World!"
 }
+
+pub async fn db_ping(Extension(pool): Extension<sqlx::PgPool>) -> (StatusCode, Json<TestResult>) {
+    match sqlx::query("SELECT 1").execute(&pool).await {
+        Ok(_) => {
+            let tr = TestResult {
+                message: String::from("This works"),
+            };
+            (StatusCode::OK, Json(tr))
+        }
+        Err(e) => (
+            StatusCode::BAD_REQUEST,
+            Json(TestResult {
+                message: e.to_string(),
+            }),
+        ),
+    }
+}