Refactored

common/queue/src/main/java/org/thingsboard/server/queue/kafka/TbKafkaProducerTemplate.java

@@ -55,16 +55,16 @@ public class TbKafkaProducerTemplate<T extends TbQueueMsg> implements TbQueuePro
 
     @Builder
     private TbKafkaProducerTemplate(TbKafkaSettings settings, String defaultTopic, String clientId, TbQueueAdmin admin) {
-        // Ugly workaround to fix org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: unable to find LoginModule class
-        // details: https://stackoverflow.com/questions/57574901/kafka-java-client-classloader-doesnt-find-sasl-scram-login-class
-        Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
-
         Properties props = settings.toProducerProps();
 
         if (!StringUtils.isEmpty(clientId)) {
             props.put(ProducerConfig.CLIENT_ID_CONFIG, clientId);
         }
         this.settings = settings;
+
+        // Ugly workaround to fix org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: unable to find LoginModule class
+        // details: https://stackoverflow.com/questions/57574901/kafka-java-client-classloader-doesnt-find-sasl-scram-login-class
+        Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
         this.producer = new KafkaProducer<>(props);
         this.defaultTopic = defaultTopic;
         this.admin = admin;

rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/kafka/TbKafkaNode.java

@@ -71,10 +71,6 @@ public class TbKafkaNode implements TbNode {
 
     @Override
     public void init(TbContext ctx, TbNodeConfiguration configuration) throws TbNodeException {
-        // Ugly workaround to fix org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: unable to find LoginModule class
-        // details: https://stackoverflow.com/questions/57574901/kafka-java-client-classloader-doesnt-find-sasl-scram-login-class
-        Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
-
         this.config = TbNodeUtils.convert(configuration, TbKafkaNodeConfiguration.class);
         Properties properties = new Properties();
         properties.put(ProducerConfig.CLIENT_ID_CONFIG, "producer-tb-kafka-node-" + ctx.getSelfId().getId().toString() + "-" + ctx.getServiceId());
@@ -92,6 +88,9 @@ public class TbKafkaNode implements TbNode {
         addMetadataKeyValuesAsKafkaHeaders = BooleanUtils.toBooleanDefaultIfNull(config.isAddMetadataKeyValuesAsKafkaHeaders(), false);
         toBytesCharset = config.getKafkaHeadersCharset() != null ? Charset.forName(config.getKafkaHeadersCharset()) : StandardCharsets.UTF_8;
         try {
+            // Ugly workaround to fix org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: unable to find LoginModule class
+            // details: https://stackoverflow.com/questions/57574901/kafka-java-client-classloader-doesnt-find-sasl-scram-login-class
+            Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
             this.producer = new KafkaProducer<>(properties);
         } catch (Exception e) {
             throw new TbNodeException(e);