Updated callbacks to all return

utilities/mysqlHandler.js

@@ -19,7 +19,7 @@ connection.connect()
 exports.getAllNodes = (callback) => {
     const sqlQuery = `SELECT * FROM ${nodesTable}`
     runSQL(sqlQuery, (rows) => {
-        callback(rows);
+        return callback(rows);
     })
 }
 
@@ -29,7 +29,7 @@ exports.getAllNodes = (callback) => {
 exports.getOnlineNodes = (callback) => {
     const sqlQuery = `SELECT * FROM ${nodesTable} WHERE online = 1;`
     runSQL(sqlQuery, (rows) => {
-        callback(rows);
+        return callback(rows);
     })
 }
 
@@ -42,7 +42,7 @@ exports.getNodeInfoFromId = (nodeId, callback) => {
     runSQL(sqlQuery, (rows) => {
         // Call back the first (and theoretically only) row
         // Specify 0 so downstream functions don't have to worry about it
-        callback(rows[0]);
+        return callback(rows[0]);
     })
 }
 
@@ -61,7 +61,7 @@ exports.addNewNode = (nodeObject, callback) => {
     const sqlQuery  = `INSERT INTO ${nodesTable} (name, ip, port, location, nearbySystems, online) VALUES ('${name}', '${ip}', ${port}, '${location}', '${nearbySystems}', ${online})`;
 
     runSQL(sqlQuery, (rows) => {
-        callback(rows);
+        return callback(rows);
     })
 }
 
@@ -112,8 +112,8 @@ exports.updateNodeInfo = (nodeObject, callback) => {
     sqlQuery = `${sqlQuery} WHERE id = ${nodeObject.id};`
 
     runSQL(sqlQuery, (rows) => {
-        if (rows.affectedRows === 1) callback(true);
-        else callback(rows);
+        if (rows.affectedRows === 1) return callback(true);
+        else return callback(rows);
     })
 }