Database pool working

src/usimp/mod.rs

@@ -1,6 +1,11 @@
 use json;
+use r2d2::{ManageConnection, Pool, PooledConnection};
+use std::sync::{Arc, Mutex};
+use crate::{get_backend, BackendClient};
 
-static ENDPOINTS: [(&str, fn(json::JsonValue) -> json::JsonValue); 1] = [("echo", echo)];
+static ENDPOINTS: [(&str, fn(json::JsonValue) -> json::JsonValue); 1] = [
+    ("echo", echo)
+];
 
 pub fn is_valid_endpoint(endpoint: &str) -> bool {
     for (name, _func) in &ENDPOINTS {
@@ -21,5 +26,16 @@ pub fn endpoint(endpoint: &str, input: json::JsonValue) -> json::JsonValue {
 }
 
 pub fn echo(input: json::JsonValue) -> json::JsonValue {
-    input
+    let backend = get_backend();
+    let mut output = input.clone();
+    match backend {
+        BackendClient::Postgres(mut client) => {
+            let res = client.query("SELECT * FROM test", &[]).unwrap();
+            for row in res {
+                let val: i32 = row.get(0);
+                output["database"] = val.into();
+            }
+        }
+    }
+    output
 }