标签：ext sum kafka adl final mave instance fse bin
在网上碰到的问题，想了下使用现有的API还是可以实现的。
首先，需要引入Kafka服务器端代码，比如加入Kafka 1.0.0依赖：
Maven
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka_2.12</artifactId>
<version>1.0.0</version>
</dependency>
Gradle
compile group: ‘org.apache.kafka‘, name: ‘kafka_2.12‘, version: ‘1.0.0‘
然后编写获取订阅某topic的所有group的方法，代码如下：
/**
* get all subscribing consumer group names for a given topic
* @param brokerListUrl localhost:9092 for instance
* @param topic topic name
* @return
*/
public static Set<String> getAllGroupsForTopic(String brokerListUrl, String topic) {
AdminClient client = AdminClient.createSimplePlaintext(brokerListUrl);
try {
List<GroupOverview> allGroups = scala.collection.JavaConversions.seqAsJavaList(client.listAllGroupsFlattened().toSeq());
Set<String> groups = new HashSet<>();
for (GroupOverview overview: allGroups) {
String groupID = overview.groupId();
Map<TopicPartition, Object> offsets = scala.collection.JavaConversions.mapAsJavaMap(client.listGroupOffsets(groupID));
Set<TopicPartition> partitions = offsets.keySet();
for (TopicPartition tp: partitions) {
if (tp.topic().equals(topic)) {
groups.add(groupID);
}
}
}
return groups;
} finally {
client.close();
}
}
查询订阅某topic的所有consumer group(Java API)
标签：ext sum kafka adl final mave instance fse bin
原文地址：http://www.cnblogs.com/huxi2b/p/7831787.html
