Fix orphan database connections resulting in an inability to connect to databases. #5567

web/pgadmin/browser/static/js/heartbeat.js

@@ -0,0 +1,31 @@
+/////////////////////////////////////////////////////////////
+//
+// pgAdmin 4 - PostgreSQL Tools
+//
+// Copyright (C) 2013 - 2023, The pgAdmin Development Team
+// This software is released under the PostgreSQL Licence
+//
+//////////////////////////////////////////////////////////////
+
+import gettext from 'sources/gettext';
+import url_for from 'sources/url_for';
+import getApiInstance from '../../../static/js/api_instance';
+import Notifier from '../../../static/js/helpers/Notifier';
+import pgAdmin from 'sources/pgadmin';
+
+const axiosApi = getApiInstance();
+let HEARTBEAT_TIMEOUT = pgAdmin.heartbeat_timeout * 1000;
+
+export function send_heartbeat(_server_id) {
+  // Send heartbeat to the server every 30 seconds
+  setInterval(function() {
+    axiosApi.post(url_for('misc.heartbeat'), {'sid': _server_id})
+      .then(() => {
+        // pass
+      })
+      .catch((error) => {
+        Notifier.error(gettext(`pgAdmin server not responding, try to login again: ${error.message || error.response.data.errormsg}`));
+      });
+
+  }, HEARTBEAT_TIMEOUT);
+}