Add option to pass cache bust param (#3525)

Co-authored-by: Dan Sullivan <dan@symbiosgroup.co.uk>
Co-authored-by: Frank Elsinga <frank@elsinga.de>

server/model/monitor.js

@@ -159,6 +159,7 @@ class Monitor extends BeanModel {
             kafkaProducerAllowAutoTopicCreation: this.getKafkaProducerAllowAutoTopicCreation(),
             kafkaProducerMessage: this.kafkaProducerMessage,
             screenshot,
+            cacheBust: this.getCacheBust(),
             remote_browser: this.remote_browser,
             snmpOid: this.snmpOid,
             jsonPathOperator: this.jsonPathOperator,
@@ -295,6 +296,14 @@ class Monitor extends BeanModel {
         return Boolean(this.grpcEnableTls);
     }
 
+    /**
+     * Parse to boolean
+     * @returns {boolean} if cachebusting is enabled
+     */
+    getCacheBust() {
+        return Boolean(this.cacheBust);
+    }
+
     /**
      * Get accepted status codes
      * @returns {object} Accepted status codes
@@ -500,6 +509,14 @@ class Monitor extends BeanModel {
                         options.data = bodyValue;
                     }
 
+                    if (this.cacheBust) {
+                        const randomFloatString = Math.random().toString(36);
+                        const cacheBust = randomFloatString.substring(2);
+                        options.params = {
+                            uptime_kuma_cachebuster: cacheBust,
+                        };
+                    }
+
                     if (this.proxy_id) {
                         const proxy = await R.load("proxy", this.proxy_id);
 

server/server.js

@@ -826,6 +826,7 @@ let needSetup = false;
                 bean.kafkaProducerAllowAutoTopicCreation = monitor.kafkaProducerAllowAutoTopicCreation;
                 bean.kafkaProducerSaslOptions = JSON.stringify(monitor.kafkaProducerSaslOptions);
                 bean.kafkaProducerMessage = monitor.kafkaProducerMessage;
+                bean.cacheBust = monitor.cacheBust;
                 bean.kafkaProducerSsl = monitor.kafkaProducerSsl;
                 bean.kafkaProducerAllowAutoTopicCreation =
                     monitor.kafkaProducerAllowAutoTopicCreation;