Added multiple connection support, separated read and write transactions

Orders/src/client/src/components/Dashboard.js

@@ -109,9 +109,9 @@ export default class Dashboard extends Component {
             <div className="form-main">
                 <div className={this.state.showConnectionOptions ? '' : 'hidden'}>
                     <select onChange={this.onChangeConnectionOption}>
-                        <option value="0">Localhost</option>
+                        <option value="0">Connection 1</option>
-                        <option value="1">Standalone - 4x15</option>
+                        <option value="1">Connection 2</option>
-                        <option value="2">Single Node - 16x60 (2)</option>
+                        <option value="2">Connection 3</option>
                     </select> 
                 </div>
                 <div className="form-content">

Orders/src/db.js

@@ -1,23 +1,48 @@
+const fs = require("fs");
 var mariadb = require('mariadb');
 
+// Place a .pem file within the project root to use this line
+//const serverCert = [fs.readFileSync("skysql_chain.pem", "utf8")];
+
 var pools = [
   mariadb.createPool({
-    host: 'localhost', 
+    host: '<host_address>', 
-    user:'root', 
+    user:'<user>', 
-    password: 'password',
+    password: '<password>',
     database: 'orders',
-    port: 3309,
+    port: 5001,
     multipleStatements: true,
-    connectionLimit: 5
+    connectionLimit: 5,
+    ssl: {
+      //ca: serverCert
+      rejectUnauthorized: false
+    }
   }),
   mariadb.createPool({
-    host: 'localhost', 
+    host: '<host_address>', 
-    user:'root', 
+    user:'<user>', 
-    password: 'password',
+    password: '<password>',
     database: 'orders',
-    port: 3310,
+    port: 5002,
     multipleStatements: true,
-    connectionLimit: 5
+    connectionLimit: 5,
+    ssl: {
+      //ca: serverCert
+      rejectUnauthorized: false
+    }
+  }),
+  mariadb.createPool({
+    host: '<host_address>', 
+    user:'<user>', 
+    password: '<password>',
+    database: 'orders',
+    port: 5003,
+    multipleStatements: true,
+    connectionLimit: 5,
+    ssl: {
+      //ca: serverCert
+      rejectUnauthorized: false
+    }
   })
 ];
 

Orders/src/routes/ordersRoutes.js

@@ -12,21 +12,24 @@ router.get("/", async (req, res, next) => {
     let conn;
     try {
         conn = await pool.getConnection(connection_id);
-        let query= "";
+
+        let reads = "";
+        let writes = "";
 
         // reads
         for (let i = 0; i < read_count; i++) {
-            query += "select * from orders limit 1;";
+            reads += "select * from orders limit 1;";
         }
 
         // writes
         let transaction_id = Date.now().toString();
         for (let i = 0; i < write_count; i++) {
-            query += "insert into orders (description) values('order - " + transaction_id + "');";
+            writes += "insert into orders (description) values('order - " + transaction_id + "');";
         }
 
         var start = Date.now();
-        await conn.query(query);
+        await conn.query(reads);
+        await conn.query(writes);
         var delta = Date.now() - start;
 
         res.send({ execution_time: delta });