Prepare v2.0.0 release

src/db/common.js

@@ -0,0 +1,26 @@
+const mysql = require('mysql2/promise');
+
+function createPool() {
+  return mysql.createPool({
+    host: process.env.DB_HOST || '127.0.0.1',
+    port: Number(process.env.DB_PORT || 3306),
+    user: process.env.DB_USER || 'signage_user',
+    password: process.env.DB_PASSWORD || 'signage_password',
+    database: process.env.DB_NAME || 'signage',
+    waitForConnections: true,
+    connectionLimit: 10,
+    namedPlaceholders: true
+  });
+}
+
+async function pruneStaleOnboardingDevices(pool) {
+  await pool.query(
+    `DELETE FROM d_onboarding_devices
+     WHERE modified_at < (CURRENT_TIMESTAMP - INTERVAL 1 MINUTE)`
+  );
+}
+
+module.exports = {
+  createPool,
+  pruneStaleOnboardingDevices
+};