[ISSUE #4832] Remove innerProducer and innerConsumer in EscapeBridge (#4834)

* remove innerProducer and innerConsumer in Escape
 #4832

* format code to pass code-style check

* Move topic route management logic to TopicRouteInfoManager

* Use ThreadPoolExecutor instead of creating a new ForkJoinPool

* remove retry logic

* remove unnecessary name server list

* remove unnecessary invokeId

* remove AssignmentManager and make maintenance of topic subscribe data lazy-initialized

* simply code

* remove unnecessary code

Author: caigy

broker/src/main/java/org/apache/rocketmq/broker/BrokerController.java

@@ -59,7 +59,6 @@
 import org.apache.rocketmq.broker.controller.ReplicasManager;
 import org.apache.rocketmq.broker.latency.BrokerFastFailure;
 import org.apache.rocketmq.broker.latency.BrokerFixedThreadPoolExecutor;
-import org.apache.rocketmq.broker.loadbalance.AssignmentManager;
 import org.apache.rocketmq.broker.longpolling.LmqPullRequestHoldService;
 import org.apache.rocketmq.broker.longpolling.NotifyMessageArrivingListener;
 import org.apache.rocketmq.broker.longpolling.PullRequestHoldService;
@@ -95,6 +94,7 @@
 import org.apache.rocketmq.broker.topic.TopicConfigManager;
 import org.apache.rocketmq.broker.topic.TopicQueueMappingCleanService;
 import org.apache.rocketmq.broker.topic.TopicQueueMappingManager;
+import org.apache.rocketmq.broker.topic.TopicRouteInfoManager;
 import org.apache.rocketmq.broker.transaction.AbstractTransactionalMessageCheckListener;
 import org.apache.rocketmq.broker.transaction.TransactionalMessageCheckService;
 import org.apache.rocketmq.broker.transaction.TransactionalMessageService;
@@ -171,7 +171,6 @@ public class BrokerController {
     protected final ConsumerOrderInfoManager consumerOrderInfoManager;
     protected final ProducerManager producerManager;
     protected final ScheduleMessageService scheduleMessageService;
-    protected final AssignmentManager assignmentManager;
     protected final ClientHousekeepingService clientHousekeepingService;
     protected final PullMessageProcessor pullMessageProcessor;
     protected final PeekMessageProcessor peekMessageProcessor;
@@ -191,6 +190,7 @@ public class BrokerController {
     protected final ConsumerIdsChangeListener consumerIdsChangeListener;
     protected final EndTransactionProcessor endTransactionProcessor;
     private final RebalanceLockManager rebalanceLockManager = new RebalanceLockManager();
+    private final TopicRouteInfoManager topicRouteInfoManager;
     protected BrokerOuterAPI brokerOuterAPI;
     protected ScheduledExecutorService scheduledExecutorService;
     protected ScheduledExecutorService syncBrokerMemberGroupExecutorService;
@@ -322,7 +322,6 @@ public BrokerController(
 
         this.filterServerManager = new FilterServerManager(this);
 
-        this.assignmentManager = new AssignmentManager(this);
         this.queryAssignmentProcessor = new QueryAssignmentProcessor(this);
         this.clientManageProcessor = new ClientManageProcessor(this);
         this.slaveSynchronize = new SlaveSynchronize(this);
@@ -386,6 +385,8 @@ public boolean online(String instanceId, String group, String topic) {
 
         this.escapeBridge = new EscapeBridge(this);
 
+        this.topicRouteInfoManager = new TopicRouteInfoManager(this);
+
         if (this.brokerConfig.isEnableSlaveActingMaster() && !this.brokerConfig.isSkipPreOnline()) {
             this.brokerPreOnlineService = new BrokerPreOnlineService(this);
         }
@@ -1238,10 +1239,6 @@ protected void shutdownBasicService() {
             this.ackMessageProcessor.shutdownPopReviveService();
         }
 
-        if (this.assignmentManager != null) {
-            this.assignmentManager.shutdown();
-        }
-
         if (this.notificationProcessor != null) {
             this.notificationProcessor.shutdown();
         }
@@ -1353,6 +1350,10 @@ protected void shutdownBasicService() {
             escapeBridge.shutdown();
         }
 
+        if (this.topicRouteInfoManager != null) {
+            this.topicRouteInfoManager.shutdown();
+        }
+
         if (this.brokerPreOnlineService != null && !this.brokerPreOnlineService.isStopped()) {
             this.brokerPreOnlineService.shutdown();
         }
@@ -1448,10 +1449,6 @@ protected void startBasicService() throws Exception {
             this.ackMessageProcessor.startPopReviveService();
         }
 
-        if (this.assignmentManager != null) {
-            this.assignmentManager.start();
-        }
-
         if (this.topicQueueMappingCleanService != null) {
             this.topicQueueMappingCleanService.start();
         }
@@ -1484,6 +1481,10 @@ protected void startBasicService() throws Exception {
             this.escapeBridge.start();
         }
 
+        if (this.topicRouteInfoManager != null) {
+            this.topicRouteInfoManager.start();
+        }
+
         if (this.brokerPreOnlineService != null) {
             this.brokerPreOnlineService.start();
         }
@@ -1779,16 +1780,6 @@ private boolean needRegister(final String clusterName,
         return needRegister;
     }
 
-    public String getNameServerList() {
-        if (this.brokerConfig.getNamesrvAddr() != null) {
-            this.brokerOuterAPI.updateNameServerAddressList(this.brokerConfig.getNamesrvAddr());
-            return this.brokerConfig.getNamesrvAddr();
-        } else if (this.brokerConfig.isFetchNamesrvAddrByAddressServer()) {
-            return this.brokerOuterAPI.fetchNameServerAddr();
-        }
-        return null;
-    }
-
     public void startService(long minBrokerId, String minBrokerAddr) {
         BrokerController.LOG.info("{} start service, min broker id is {}, min broker addr: {}",
             this.brokerConfig.getCanonicalName(), minBrokerId, minBrokerAddr);
@@ -2153,14 +2144,6 @@ public ExecutorService getSendMessageExecutor() {
         return sendMessageExecutor;
     }
 
-    public AssignmentManager getAssignmentManager() {
-        return assignmentManager;
-    }
-
-    public ClientManageProcessor getClientManageProcessor() {
-        return clientManageProcessor;
-    }
-
     public SendMessageProcessor getSendMessageProcessor() {
         return sendMessageProcessor;
     }
@@ -2253,4 +2236,8 @@ public TimerCheckpoint getTimerCheckpoint() {
         return timerCheckpoint;
     }
 
+    public TopicRouteInfoManager getTopicRouteInfoManager() {
+        return this.topicRouteInfoManager;
+    }
+
 }