private RemotingCommand cloneGroupOffset(ChannelHandlerContext ctx, RemotingCommand request)
throws RemotingCommandException {
final RemotingCommand response = RemotingCommand.createResponseCommand(null);
CloneGroupOffsetRequestHeader requestHeader =
(CloneGroupOffsetRequestHeader) request
.decodeCommandCustomHeader(CloneGroupOffsetRequestHeader.class);
Set<String> topics;
if (UtilAll.isBlank(requestHeader.getTopic())) {
topics =
this.brokerController.getConsumerOffsetManager().whichTopicByConsumer(
requestHeader.getSrcGroup());
}
else {
topics = new HashSet<String>();
topics.add(requestHeader.getTopic());
}
for (String topic : topics) {
TopicConfig topicConfig = this.brokerController.getTopicConfigManager().selectTopicConfig(topic);
if (null == topicConfig) {
log.warn("[cloneGroupOffset], topic config not exist, {}", topic);
continue;
}
/**
* Consumer不在线的时候，也允许查询消费进度
*/
if (!requestHeader.isOffline()) {
// 如果Consumer在线，而且这个topic没有被订阅，那么就跳过
SubscriptionData findSubscriptionData =
this.brokerController.getConsumerManager().findSubscriptionData(
requestHeader.getSrcGroup(), topic);
if (this.brokerController.getConsumerManager().findSubscriptionDataCount(
requestHeader.getSrcGroup()) > 0
&& findSubscriptionData == null) {
log.warn("[cloneGroupOffset], the consumer group[{}], topic[{}] not exist",
requestHeader.getSrcGroup(), topic);
continue;
}
}
this.brokerController.getConsumerOffsetManager().cloneOffset(requestHeader.getSrcGroup(),
requestHeader.getDestGroup(), requestHeader.getTopic());
}
response.setCode(ResponseCode.SUCCESS);
response.setRemark(null);
return response;