[certificate notification] error handling and better msg

server/model/monitor.js

@@ -451,29 +451,34 @@ class Monitor extends BeanModel {
         let tls_info_bean = await R.findOne("monitor_tls_info", "monitor_id = ?", [
             this.id,
         ]);
+
         if (tls_info_bean == null) {
             tls_info_bean = R.dispense("monitor_tls_info");
             tls_info_bean.monitor_id = this.id;
-        }
+        } else {
 
-        // Clear sent history if the cert changed.
+            // Clear sent history if the cert changed.
-        let oldCertInfo = JSON.parse(tls_info_bean.info_json);
+            try {
+                let oldCertInfo = JSON.parse(tls_info_bean.info_json);
 
-        let isValidObjects = oldCertInfo && oldCertInfo.certInfo && checkCertificateResult && checkCertificateResult.certInfo;
+                let isValidObjects = oldCertInfo && oldCertInfo.certInfo && checkCertificateResult && checkCertificateResult.certInfo;
+
+                if (isValidObjects) {
+                    if (oldCertInfo.certInfo.fingerprint256 !== checkCertificateResult.certInfo.fingerprint256) {
+                        debug("Resetting sent_history");
+                        await R.exec("DELETE FROM notification_sent_history WHERE type = 'certificate' AND monitor_id = ?", [
+                            this.id
+                        ]);
+                    } else {
+                        debug("No need to reset sent_history");
+                        debug(oldCertInfo.certInfo.fingerprint256);
+                        debug(checkCertificateResult.certInfo.fingerprint256);
+                    }
+                } else {
+                    debug("Not valid object");
+                }
+            } catch (e) { }
 
-        if (isValidObjects) {
-            if (oldCertInfo.certInfo.fingerprint256 !== checkCertificateResult.certInfo.fingerprint256) {
-                debug("Resetting sent_history");
-                await R.exec("DELETE FROM notification_sent_history WHERE type = 'certificate' AND monitor_id = ?", [
-                    this.id
-                ]);
-            } else {
-                debug("No need to reset sent_history");
-                debug(oldCertInfo.certInfo.fingerprint256);
-                debug(checkCertificateResult.certInfo.fingerprint256);
-            }
-        } else {
-            debug("Not valid object");
         }
 
         tls_info_bean.info_json = JSON.stringify(checkCertificateResult);
@@ -690,7 +695,7 @@ class Monitor extends BeanModel {
             for (let notification of notificationList) {
                 try {
                     debug("Sending to " + notification.name);
-                    await Notification.send(JSON.parse(notification.config), `The certificate of ${this.url} will be expired in ${daysRemaining} days`);
+                    await Notification.send(JSON.parse(notification.config), `[${this.name}][${this.url}] Certificate will be expired in ${daysRemaining} days`);
                     sent = true;
                 } catch (e) {
                     console.error("Cannot send cert notification to " + notification.name);