public boolean updateTopicRouteInfoFromNameServer(final String topic, boolean isDefault,
DefaultMQProducer defaultMQProducer) {
try {
if (this.lockNamesrv.tryLock(LockTimeoutMillis, TimeUnit.MILLISECONDS)) {
try {
TopicRouteData topicRouteData;
if (isDefault && defaultMQProducer != null) {
topicRouteData =
this.mQClientAPIImpl.getDefaultTopicRouteInfoFromNameServer(
defaultMQProducer.getCreateTopicKey(), 1000 * 3);
if (topicRouteData != null) {
for (QueueData data : topicRouteData.getQueueDatas()) {
// 读写分区个数是一致，故只做一次判断
int queueNums =
Math.min(defaultMQProducer.getDefaultTopicQueueNums(),
data.getReadQueueNums());
data.setReadQueueNums(queueNums);
data.setWriteQueueNums(queueNums);
}
}
}
else {
topicRouteData =
this.mQClientAPIImpl.getTopicRouteInfoFromNameServer(topic, 1000 * 3);
}
if (topicRouteData != null) {
TopicRouteData old = this.topicRouteTable.get(topic);
boolean changed = topicRouteDataIsChange(old, topicRouteData);
if (!changed) {
changed = this.isNeedUpdateTopicRouteInfo(topic);
}
else {
log.info("the topic[{}] route info changed, odl[{}] ,new[{}]", topic, old,
topicRouteData);
}
if (changed) {
// 后面排序会影响下次的equal逻辑判断，所以先clone一份
TopicRouteData cloneTopicRouteData = topicRouteData.cloneTopicRouteData();
// 更新Broker地址信息
for (BrokerData bd : topicRouteData.getBrokerDatas()) {
this.brokerAddrTable.put(bd.getBrokerName(), bd.getBrokerAddrs());
}