feat(broker): add more logs when broker register to controller

1. add more logs when broker register to controller

broker/src/main/java/org/apache/rocketmq/broker/controller/ReplicasManager.java

@@ -420,6 +420,7 @@ public class ReplicasManager {
             if (this.registerState == RegisterState.INITIAL) {
                 Long nextBrokerId = getNextBrokerId();
                 if (nextBrokerId == null || !createTempMetadataFile(nextBrokerId)) {
+                    LOGGER.error("Failed to create temp metadata file, nextBrokerId: {}", nextBrokerId);
                     return false;
                 }
                 this.registerState = RegisterState.CREATE_TEMP_METADATA_FILE_DONE;
@@ -435,6 +436,7 @@ public class ReplicasManager {
                     return false;
                 }
                 if (!createMetadataFileAndDeleteTemp()) {
+                    LOGGER.error("Failed to create metadata file and delete temp metadata file, temp metadata: {}", this.brokerMetadata);
                     return false;
                 }
                 this.registerState = RegisterState.CREATE_METADATA_FILE_DONE;

store/src/main/java/org/apache/rocketmq/store/ha/autoswitch/BrokerMetadata.java

@@ -94,4 +94,14 @@ public class BrokerMetadata extends MetadataFile {
     public int hashCode() {
         return Objects.hash(clusterName, brokerName, brokerId);
     }
+
+    @Override
+    public String toString() {
+        return "BrokerMetadata{" +
+                "clusterName='" + clusterName + '\'' +
+                ", brokerName='" + brokerName + '\'' +
+                ", brokerId=" + brokerId +
+                ", filePath='" + filePath + '\'' +
+                '}';
+    }
 }

store/src/main/java/org/apache/rocketmq/store/ha/autoswitch/TempBrokerMetadata.java

@@ -81,4 +81,15 @@ public class TempBrokerMetadata extends BrokerMetadata {
     public String getRegisterCheckCode() {
         return registerCheckCode;
     }
+
+    @Override
+    public String toString() {
+        return "TempBrokerMetadata{" +
+                "registerCheckCode='" + registerCheckCode + '\'' +
+                ", clusterName='" + clusterName + '\'' +
+                ", brokerName='" + brokerName + '\'' +
+                ", brokerId=" + brokerId +
+                ", filePath='" + filePath + '\'' +
+                '}';
+    }
 }