public String findBrokerAddrByTopic(final String topic) {
TopicRouteData topicRouteData = this.topicRouteTable.get(topic);
if (topicRouteData != null) {
List<BrokerData> brokers = topicRouteData.getBrokerDatas();
if (!brokers.isEmpty()) {
BrokerData bd = brokers.get(0);
return bd.selectBrokerAddr();
}
}
return null;
}
private boolean topicRouteDataIsChange(TopicRouteData olddata, TopicRouteData nowdata) {
if (olddata == null || nowdata == null) return true;
TopicRouteData old = olddata.cloneTopicRouteData();
TopicRouteData now = nowdata.cloneTopicRouteData();
Collections.sort(old.getQueueDatas());
Collections.sort(old.getBrokerDatas());
Collections.sort(now.getQueueDatas());
Collections.sort(now.getBrokerDatas());
return !old.equals(now);
}
private boolean isBrokerAddrExistInTopicRouteTable(final String addr) {
Iterator<Entry<String, TopicRouteData>> it = this.topicRouteTable.entrySet().iterator();
while (it.hasNext()) {
Entry<String, TopicRouteData> entry = it.next();
TopicRouteData topicRouteData = entry.getValue();
List<BrokerData> bds = topicRouteData.getBrokerDatas();
for (BrokerData bd : bds) {
if (bd.getBrokerAddrs() != null) {
boolean exist = bd.getBrokerAddrs().containsValue(addr);
if (exist) return true;
}
}
}
return false;
}
public static Set<MessageQueue> topicRouteData2TopicSubscribeInfo(
final String topic, final TopicRouteData route) {
Set<MessageQueue> mqList = new HashSet<MessageQueue>();
List<QueueData> qds = route.getQueueDatas();
for (QueueData qd : qds) {
if (PermName.isReadable(qd.getPerm())) {
for (int i = 0; i < qd.getReadQueueNums(); i++) {
MessageQueue mq = new MessageQueue(topic, qd.getBrokerName(), i);
mqList.add(mq);
}
}
}
return mqList;
}
public static TopicPublishInfo topicRouteData2TopicPublishInfo(
final String topic, final TopicRouteData route) {
TopicPublishInfo info = new TopicPublishInfo();
// 顺序消息
if (route.getOrderTopicConf() != null && route.getOrderTopicConf().length() > 0) {
String[] brokers = route.getOrderTopicConf().split(";");
for (String broker : brokers) {
String[] item = broker.split(":");
int nums = Integer.parseInt(item[1]);
for (int i = 0; i < nums; i++) {
MessageQueue mq = new MessageQueue(topic, item[0], i);
info.getMessageQueueList().add(mq);
}
}
info.setOrderTopic(true);
}
// 非顺序消息
else {
List<QueueData> qds = route.getQueueDatas();
// 排序原因：即使没有配置顺序消息模式，默认队列的顺序同配置的一致。
Collections.sort(qds);
for (QueueData qd : qds) {
if (PermName.isWriteable(qd.getPerm())) {
for (int i = 0; i < qd.getWriteQueueNums(); i++) {
MessageQueue mq = new MessageQueue(topic, qd.getBrokerName(), i);
info.getMessageQueueList().add(mq);
}
}
}
info.setOrderTopic(false);
}
return info;
}
/** 调用Name Server接口，根据Topic获取路由信息 */
public boolean updateTopicRouteInfoFromNameServer(
final String topic, boolean isDefault, DefaultMQProducer defaultMQProducer) {
try {
if (this.lockNamesrv.tryLock(LockTimeoutMillis, TimeUnit.MILLISECONDS)) {
try {
TopicRouteData topicRouteData;
if (isDefault) {
if (null == defaultMQProducer) return false;
topicRouteData =
this.mQClientAPIImpl.getTopicRouteInfoFromNameServer(
defaultMQProducer.getCreateTopicKey(), 1000 * 3);
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());
}
// 更新发布队列信息
{
TopicPublishInfo publishInfo =
topicRouteData2TopicPublishInfo(topic, topicRouteData);
Iterator<Entry<String, MQProducerInner>> it =
this.producerTable.entrySet().iterator();
while (it.hasNext()) {
Entry<String, MQProducerInner> entry = it.next();
MQProducerInner impl = entry.getValue();
if (impl != null) {
impl.updateTopicPublishInfo(topic, publishInfo);
}
}
}
// 更新订阅队列信息
{
Set<MessageQueue> subscribeInfo =
topicRouteData2TopicSubscribeInfo(topic, topicRouteData);
Iterator<Entry<String, MQConsumerInner>> it =
this.consumerTable.entrySet().iterator();
while (it.hasNext()) {
Entry<String, MQConsumerInner> entry = it.next();
MQConsumerInner impl = entry.getValue();
if (impl != null) {
impl.updateTopicSubscribeInfo(topic, subscribeInfo);
}
}
}
log.info("topicRouteTable.put TopicRouteData[{}]", cloneTopicRouteData);
this.topicRouteTable.put(topic, cloneTopicRouteData);
return true;
}
} else {
log.warn(
"updateTopicRouteInfoFromNameServer, getTopicRouteInfoFromNameServer return null, Topic: {}",
topic);
}
} catch (Exception e) {
if (!topic.startsWith(MixAll.RETRY_GROUP_TOPIC_PREFIX)) {
log.warn("updateTopicRouteInfoFromNameServer Exception", e);
}
} finally {
this.lockNamesrv.unlock();
}
} else {
log.warn("updateTopicRouteInfoFromNameServer tryLock timeout {}ms", LockTimeoutMillis);
}
} catch (InterruptedException e) {
log.warn("updateTopicRouteInfoFromNameServer Exception", e);
}
return false;
}
public TopicRouteData pickupTopicRouteData(final String topic) {
TopicRouteData topicRouteData = new TopicRouteData();
boolean foundQueueData = false;
boolean foundBrokerData = false;
Set<String> brokerNameSet = new HashSet<String>();
List<BrokerData> brokerDataList = new LinkedList<BrokerData>();
topicRouteData.setBrokerDatas(brokerDataList);
HashMap<String, List<String>> filterServerMap = new HashMap<String, List<String>>();
topicRouteData.setFilterServerTable(filterServerMap);
try {
try {
this.lock.readLock().lockInterruptibly();
List<QueueData> queueDataList = this.topicQueueTable.get(topic);
if (queueDataList != null) {
topicRouteData.setQueueDatas(queueDataList);
foundQueueData = true;
// BrokerName去重
Iterator<QueueData> it = queueDataList.iterator();
while (it.hasNext()) {
QueueData qd = it.next();
brokerNameSet.add(qd.getBrokerName());
}
for (String brokerName : brokerNameSet) {
BrokerData brokerData = this.brokerAddrTable.get(brokerName);
if (null != brokerData) {
BrokerData brokerDataClone = new BrokerData();
brokerDataClone.setBrokerName(brokerData.getBrokerName());
brokerDataClone.setBrokerAddrs(
(HashMap<Long, String>) brokerData.getBrokerAddrs().clone());
brokerDataList.add(brokerDataClone);
foundBrokerData = true;
// 增加Filter Server
for (final String brokerAddr : brokerDataClone.getBrokerAddrs().values()) {
List<String> filterServerList = this.filterServerTable.get(brokerAddr);
filterServerMap.put(brokerAddr, filterServerList);
}
}
}
}
} finally {
this.lock.readLock().unlock();
}
} catch (Exception e) {
log.error("pickupTopicRouteData Exception", e);
}
if (log.isDebugEnabled()) {
log.debug("pickupTopicRouteData {} {}", topic, topicRouteData);
}
if (foundBrokerData && foundQueueData) {
return topicRouteData;
}
return null;
}