feat: adding config properties map for kafka consumer

CHANGELOG.md

@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [1.0.1] - 2024-10-24
+### Added
+* Support for consumer properties allowing connecting to Kafka cloud provider.
+
 ## [1.0.0] - 2023-04-27
 ### Changed
 * Upgrade `Springboot` version from `2.3.3.RELEASE` to `2.7.10`.

README.md

@@ -90,6 +90,26 @@ The table below describes all the available configuration values for Drone Fly.
 | instance.name | Instance name for a Drone Fly instance. `instance.name` is also used to derive the Kafka consumer group. Therefore, in a multi-instance deployment, a unique `instance.name` for each Drone Fly instance needs to be provided to avoid all instances ending up in the same Kafka consumer group. | `string` | `drone-fly` | no |
 | endpoint.port | Port on which Drone Fly Spring Boot app will start. | `string` | `8008` | no |
 
+### Additional configuration parameters
+The Kafka message reader supports properties that are passed to the Kafka consumer builder.
+These are environment variables with the PREFIX apiary.messaging.consumer.
+
+ #### Example for sending consumer parameters when using a Kafka cloud provider
+- apiary.messaging.consumer.security.protocol=SSL
+- apiary.messaging.consumer.sasl.mechanism=AWS_MSK_IAM
+- apiary.messaging.consumer.sasl_jaas.config=software.amazon.msk.auth.iam.IAMLoginModule required;
+- apiary.messaging.consumer.sasl.client.callback.handler.class=software.amazon.msk.auth.iam.IAMClientCallbackHandler
+
+In this case we are sending the properties to Kafka's consumer to be able to connect to AWS MSK which also requires the IAM library included as a dependency in the POM.xml file
+
+	java -Dloader.path=lib/ -jar drone-fly-app-<version>-exec.jar \
+		--apiary.bootstrap.servers=localhost:9092 \
+		--apiary.kafka.topic.name=apiary \
+		--apiary.listener.list="com.expediagroup.sampleListener1,com.expediagroup.sampleListener2" \
+        --apiary.messaging.consumer.security.protocol=SSL \
+        --apiary.messaging.consumer.sasl.mechanism=AWS_MSK_IAM \
+        --apiary.messaging.consumer.sasl_jaas.config=software.amazon.msk.auth.iam.IAMLoginModule required; \
+        --apiary.messaging.consumer.sasl.client.callback.handler.class=software.amazon.msk.auth.iam.IAMClientCallbackHandler
 
 ## Metrics
 

drone-fly-app/pom.xml

@@ -108,6 +108,11 @@
       <artifactId>awaitility</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>software.amazon.msk</groupId>
+      <artifactId>aws-msk-iam-auth</artifactId>
+      <version>1.1.1</version>
+    </dependency>
   </dependencies>
 
   <build>

drone-fly-app/src/main/java/com/expediagroup/dataplatform/dronefly/app/context/CommonBeans.java

@@ -16,6 +16,7 @@
 package com.expediagroup.dataplatform.dronefly.app.context;
 
 import java.util.List;
+import java.util.Properties;
 import java.util.stream.Collectors;
 
 import org.apache.hadoop.hive.conf.HiveConf;
@@ -24,6 +25,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -32,10 +34,12 @@
 import com.expediagroup.dataplatform.dronefly.app.messaging.MessageReaderAdapter;
 import com.expediagroup.dataplatform.dronefly.app.service.ListenerCatalog;
 import com.expediagroup.dataplatform.dronefly.app.service.factory.ListenerCatalogFactory;
+import org.springframework.context.annotation.Primary;
 
 @Configuration
 public class CommonBeans {
   private static final Logger log = LoggerFactory.getLogger(CommonBeans.class);
+  public static final String CONSUMER_PROPERTIES_PREFIX = "apiary.messaging.consumer";
 
   @Value("${instance.name:drone-fly}")
   private String instanceName;
@@ -54,6 +58,13 @@ public HiveConf hiveConf() {
     return new HiveConf();
   }
 
+  @Bean
+  @Primary
+  @ConfigurationProperties(CONSUMER_PROPERTIES_PREFIX)
+  public Properties getEnvProperties() {
+    return new Properties();
+  }
+
   @Bean
   public ListenerCatalog listenerCatalog(HiveConf conf) throws MetaException {
     ListenerCatalog listenerCatalog = new ListenerCatalogFactory(conf).newInstance(confListenerList);
@@ -65,8 +76,21 @@ public ListenerCatalog listenerCatalog(HiveConf conf) throws MetaException {
 
   @Bean
   public MessageReaderAdapter messageReaderAdapter() {
-    KafkaMessageReader delegate = KafkaMessageReaderBuilder.builder(bootstrapServers, topicName, instanceName).build();
+    Properties consumerProperties = getConsumerProperties();
+    KafkaMessageReader delegate = KafkaMessageReaderBuilder.
+            builder(bootstrapServers, topicName, instanceName).
+            withConsumerProperties(consumerProperties).
+            build();
     return new MessageReaderAdapter(delegate);
   }
 
-}
+  private Properties getConsumerProperties() {
+    Properties consumerProperties = new Properties();
+    getEnvProperties().forEach((key, value) -> {
+        consumerProperties.put(key.toString(), value.toString());
+        log.info("Consumer property {} set with value: {}", key, value);
+    } );
+    return consumerProperties;
+  }
+
+}

drone-fly-integration-tests/pom.xml

@@ -76,5 +76,10 @@
       <artifactId>junit-jupiter-params</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>software.amazon.msk</groupId>
+      <artifactId>aws-msk-iam-auth</artifactId>
+      <version>1.1.1</version>
+    </dependency>
   </dependencies>
 </project>