polylines tooltip content

pages/api/talas5/webserviceMap/gisStationsMeasurementsSQL.js

@@ -1,20 +1,24 @@
-import mysql from "mysql";
+// /pages/api/talas5/webserviceMap/gisStationsMeasurementsSQL.js
+import mysql from "mysql2";
 
-const dbConfig = {
+// Erstellen eines Pools von Datenbankverbindungen
+const pool = mysql.createPool({
   host: process.env.DB_HOST,
   user: process.env.DB_USER,
   password: process.env.DB_PASSWORD,
   database: process.env.DB_NAME,
   port: process.env.DB_PORT,
-};
+  waitForConnections: true,
+  connectionLimit: 10,
+  queueLimit: 0,
+});
 
-const connection = mysql.createConnection(dbConfig);
-connection.connect((err) => {
-    if (err) {
-      console.error("Fehler beim Verbinden:", err.stack);
-      return;
-    }
-    console.log("Database connected successfully.");
+pool.on("connection", function (connection) {
+  console.log("Database connected successfully.");
+});
+
+pool.on("error", function (err) {
+  console.error("Fehler beim Verbinden:", err);
 });
 
 export default function handler(req, res) {
@@ -23,7 +27,7 @@ export default function handler(req, res) {
     return res.status(405).json({ error: "Nur GET Methode erlaubt" });
   }
 
-  connection.query(`
+  const sqlQuery = `
     SELECT 
       ld.idLD,
       dp.idDP,
@@ -34,37 +38,37 @@ export default function handler(req, res) {
       ld.idLocation,
       area.Name AS Area_Name
     FROM location_device as ld
-    LEFT JOIN location_coordinates AS co ON ld.idLocation = co.idLocation and co.idMaps = ${idMap}
+    LEFT JOIN location_coordinates AS co ON ld.idLocation = co.idLocation and co.idMaps = ?
     LEFT JOIN devices AS de ON de.idDevice = ld.idDevice
     LEFT JOIN datapoint AS dp ON ld.idLD = dp.idLD
     LEFT JOIN message_group AS mg ON dp.idmessage_group = mg.idmessage_group
     LEFT JOIN location AS loc ON ld.idLocation = loc.idLocation
     LEFT JOIN area AS area ON loc.idArea = area.idArea
     WHERE co.X > 0 AND dp.idmessage_group>0 AND length(dp.unit)> 0 AND length(dp.value)> 0
-  `, (error, results) => {
+  `;
+
+  pool.query(sqlQuery, [idMap], (error, results) => {
     if (error) {
       console.error("Fehler beim Abrufen der gis_lines:", error);
-      return res
-        .status(500)
-        .json({ error: "Fehler beim Abrufen der gis_lines" });
+      return res.status(500).json({ error: "Fehler beim Abrufen der gis_lines" });
     }
 
     const response = {
-        "Name": "Liste aller Messungen der Geraete",
-        "Zeitstempel": new Date().toISOString(),
-        "IdMap":idMap,
-      "Statis": results.map((row) => ({
+      Name: "Liste aller Messungen der Geraete",
+      Zeitstempel: new Date().toISOString(),
+      IdMap: idMap,
+      Statis: results.map((row) => ({
         IdLD: row.idLD,
         IdDP: row.idDP,
         Na: row.Na,
         Val: row.Val,
         Unit: row.Unit,
         Gr: row.Gr,
-        IdLocation: row.IdLocation,
+        IdLocation: row.idLocation,
         Area_Name: row.Area_Name,
       })),
     };
 
     res.json(response);
   });
-}
+}