Merge pull request #384 from nacos-group/develop

Optimize some codes

nacossync-worker/pom.xml

@@ -47,6 +47,7 @@
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
+            <scope>provided</scope>
         </dependency>
         <!-- 默认使用HikariCP连接池 -->
         <dependency>
@@ -164,9 +165,17 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>11</source>
-                    <target>11</target>
+                    <source>17</source>
+                    <target>17</target>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                            <version>1.18.34</version>
+                        </path>
+                    </annotationProcessorPaths>
                 </configuration>
+                
             </plugin>
         </plugins>
     </build>

nacossync-worker/src/main/java/com/alibaba/nacossync/NacosSyncMain.java

@@ -17,9 +17,11 @@
 
 package com.alibaba.nacossync;
 
+import com.alibaba.nacossync.util.BatchTaskExecutor;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration;
+import org.springframework.context.ConfigurableApplicationContext;
 
 /**
  * @author NacosSync
@@ -30,6 +32,14 @@ public class NacosSyncMain {
     
     public static void main(String[] args) {
         
-        SpringApplication.run(NacosSyncMain.class, args);
+        ConfigurableApplicationContext context = SpringApplication.run(NacosSyncMain.class, args);
+        
+        // Register shutdown callback using Spring Boot's context lifecycle
+        context.registerShutdownHook();
+        context.addApplicationListener(event -> {
+            if (event instanceof org.springframework.context.event.ContextClosedEvent) {
+                BatchTaskExecutor.shutdown();
+            }
+        });
     }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/api/SystemConfigApi.java

@@ -44,14 +44,18 @@ import com.alibaba.nacossync.template.processor.ConfigQueryProcessor;
 @RestController
 public class SystemConfigApi {
     
-    @Autowired
-    private ConfigQueryProcessor configQueryProcessor;
+    private final ConfigQueryProcessor configQueryProcessor;
     
-    @Autowired
-    private ConfigDeleteProcessor configDeleteProcessor;
+    private final ConfigDeleteProcessor configDeleteProcessor;
     
-    @Autowired
-    private ConfigAddProcessor configAddProcessor;
+    private final ConfigAddProcessor configAddProcessor;
+    
+    public SystemConfigApi(ConfigQueryProcessor configQueryProcessor, ConfigDeleteProcessor configDeleteProcessor,
+            ConfigAddProcessor configAddProcessor) {
+        this.configQueryProcessor = configQueryProcessor;
+        this.configDeleteProcessor = configDeleteProcessor;
+        this.configAddProcessor = configAddProcessor;
+    }
     
     @RequestMapping(path = "/v1/systemconfig/list", method = RequestMethod.GET)
     public ConfigQueryResult tasks(ConfigQueryRequest configQueryRequest) {

nacossync-worker/src/main/java/com/alibaba/nacossync/cache/SkyWalkerCacheServices.java

@@ -26,7 +26,6 @@ import com.alibaba.nacossync.pojo.model.TaskDO;
 import com.alibaba.nacossync.util.SkyWalkerUtil;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.SneakyThrows;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.StringUtils;
@@ -43,17 +42,19 @@ import java.util.concurrent.ThreadLocalRandom;
 @Service
 public class SkyWalkerCacheServices {
     
-    @Autowired
-    private ClusterAccessService clusterAccessService;
+    private static final Map<String, FinishedTask> FINISHED_TASK_MAP = new ConcurrentHashMap<>();
     
-    @Autowired
-    private ObjectMapper objectMapper;
+    private final ClusterAccessService clusterAccessService;
 
-    private static final Map<String, FinishedTask> finishedTaskMap = new ConcurrentHashMap<>();
+    private final ObjectMapper objectMapper;
+    
+    public SkyWalkerCacheServices(ClusterAccessService clusterAccessService, ObjectMapper objectMapper) {
+        this.clusterAccessService = clusterAccessService;
+        this.objectMapper = objectMapper;
+    }
     
     public String getClusterConnectKey(String clusterId) {
         List<String> allClusterConnectKey = getAllClusterConnectKey(clusterId);
-
         return allClusterConnectKey.get(ThreadLocalRandom.current().nextInt(allClusterConnectKey.size()));
     }
 
@@ -84,37 +85,31 @@ public class SkyWalkerCacheServices {
         FinishedTask finishedTask = new FinishedTask();
         finishedTask.setOperationId(operationId);
 
-        finishedTaskMap.put(operationId, finishedTask);
+        FINISHED_TASK_MAP.put(operationId, finishedTask);
     }
 
     public FinishedTask getFinishedTask(TaskDO taskDO) {
 
         String operationId = SkyWalkerUtil.getOperationId(taskDO);
 
-        if (StringUtils.hasLength(operationId)) {
+        if (!StringUtils.hasLength(operationId)) {
             return null;
         }
 
-        return finishedTaskMap.get(operationId);
+        return FINISHED_TASK_MAP.get(operationId);
     }
     
-    public FinishedTask getFinishedTask(String operationId) {
-        if (StringUtils.hasLength(operationId)) {
-            return null;
-        }
-        return finishedTaskMap.get(operationId);
-    }
     
-    public FinishedTask removeFinishedTask(String operationId) {
-        if (StringUtils.hasLength(operationId)) {
-            return null;
+    public void removeFinishedTask(String operationId) {
+        if (!StringUtils.hasLength(operationId)) {
+            return;
         }
-        return finishedTaskMap.remove(operationId);
+        FINISHED_TASK_MAP.remove(operationId);
     }
 
     public Map<String, FinishedTask> getFinishedTaskMap() {
 
-        return finishedTaskMap;
+        return FINISHED_TASK_MAP;
     }
     
 

nacossync-worker/src/main/java/com/alibaba/nacossync/constant/ClusterTypeEnum.java

@@ -12,6 +12,8 @@
  */
 package com.alibaba.nacossync.constant;
 
+import lombok.Getter;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -19,6 +21,7 @@ import java.util.List;
  * @author NacosSync
  * @version $Id: ClusterTypeEnum.java, v 0.1 2018-09-25 下午4:38 NacosSync Exp $$
  */
+@Getter
 public enum ClusterTypeEnum {
 
     CS("CS", "configserver集群"),
@@ -32,18 +35,16 @@ public enum ClusterTypeEnum {
     ZK("ZK", "zookeeper集群");
 
 
-    private String code;
+    private final String code;
 
-    private String desc;
 
     ClusterTypeEnum(String code, String desc) {
         this.code = code;
-        this.desc = desc;
     }
 
     public static List<String> getClusterTypeCodes() {
 
-        List<String> list = new ArrayList<String>();
+        List<String> list = new ArrayList<>();
 
         for (ClusterTypeEnum clusterTypeEnum : ClusterTypeEnum.values()) {
             list.add(clusterTypeEnum.getCode());
@@ -51,41 +52,6 @@ public enum ClusterTypeEnum {
         return list;
     }
 
-    /**
-     * Getter method for property <tt>code</tt>.
-     *
-     * @return property value of code
-     */
-    public String getCode() {
-        return code;
-    }
-
-    /**
-     * Setter method for property <tt>code </tt>.
-     *
-     * @param code value to be assigned to property code
-     */
-    public void setCode(String code) {
-        this.code = code;
-    }
-
-    /**
-     * Getter method for property <tt>desc</tt>.
-     *
-     * @return property value of desc
-     */
-    public String getDesc() {
-        return desc;
-    }
-
-    /**
-     * Setter method for property <tt>desc </tt>.
-     *
-     * @param desc value to be assigned to property desc
-     */
-    public void setDesc(String desc) {
-        this.desc = desc;
-    }
  
     public static boolean contains(String clusterType) {
 

nacossync-worker/src/main/java/com/alibaba/nacossync/constant/MetricsStatisticsType.java

@@ -3,10 +3,13 @@
  */
 package com.alibaba.nacossync.constant;
 
+import lombok.Getter;
+
 /**
  * @author NacosSync
  * @version $Id: MetricsStatisticsType.java, v 0.1 2019年02月28日 下午2:17 NacosSync Exp $
  */
+@Getter
 public enum MetricsStatisticsType {
 
     CACHE_SIZE("nacosSync.finished.taskMap.cacheSize", "任务执行完成缓存列表数"),
@@ -28,15 +31,10 @@ public enum MetricsStatisticsType {
     /**
      * metricsName
      */
-    private String metricsName;
-    private String desc;
+    private final String metricsName;
 
     MetricsStatisticsType(String code, String desc) {
         this.metricsName = code;
-        this.desc = desc;
     }
     
-    public String getMetricsName() {
-        return metricsName;
-    }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/constant/ResultCodeEnum.java

@@ -16,46 +16,23 @@
  */
 package com.alibaba.nacossync.constant;
 
+import lombok.Getter;
+
 /**
  * @author NacosSync
  * @version $Id: ResultCodeEnum.java, v 0.1 2018-09-25 PM4:38 NacosSync Exp $$
  */
+@Getter
 public enum ResultCodeEnum {
     
     SUCCESS("SUCCESS", "请求成功", "请求成功"),
     SYSTEM_ERROR("SYSTEM_ERROR", "系统异常", "系统异常");
 
-    private String code;
-    private String errorMessage;
-    private String detail;
+    private final String code;
     
     ResultCodeEnum(String code, String errorMessage, String detail) {
         this.code = code;
-        this.errorMessage = errorMessage;
-        this.detail = detail;
     }
     
-    public String getCode() {
-        return code;
-    }
     
-    public void setCode(String code) {
-        this.code = code;
-    }
-
-    public String getErrorMessage() {
-        return errorMessage;
-    }
-
-    public void setErrorMessage(String errorMessage) {
-        this.errorMessage = errorMessage;
-    }
-
-    public String getDetail() {
-        return detail;
-    }
-
-    public void setDetail(String detail) {
-        this.detail = detail;
-    }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/constant/SkyWalkerConstants.java

@@ -24,10 +24,10 @@ public class SkyWalkerConstants {
 
     public static final  String UNDERLINE            = "_";
 
-    public static final  String DEST_CLUSTERID_KEY   = "destClusterId";
+    public static final  String DEST_CLUSTER_ID_KEY = "destClusterId";
     public static final  String GROUP_NAME           = "groupName";
     public static final String SYNC_SOURCE_KEY      = "syncSource";
-    public static final String SOURCE_CLUSTERID_KEY = "sourceClusterId";
+    public static final String SOURCE_CLUSTER_ID_KEY = "sourceClusterId";
     public static final String MANAGEMENT_PORT_KEY="management.port";
     public static final String MANAGEMENT_CONTEXT_PATH_KEY="management.context-path";
     

nacossync-worker/src/main/java/com/alibaba/nacossync/constant/TaskStatusEnum.java

@@ -16,6 +16,8 @@
  */
 package com.alibaba.nacossync.constant;
 
+import lombok.Getter;
+
 /**
  * @author NacosSync
  * @version $Id: TaskStatusEnum.java, v 0.1 2018-09-26 上午2:38 NacosSync Exp $$
@@ -31,49 +33,16 @@ public enum TaskStatusEnum {
      */
     DELETE("DELETE", "任务需要被删除");
     
-    private String code;
-    private String desc;
+
+    @Getter
+    private final String code;
+    private final String desc;
 
     TaskStatusEnum(String code, String desc) {
         this.code = code;
         this.desc = desc;
     }
     
-    /**
-     * Getter method for property <tt>code</tt>.
-     *
-     * @return property value of code
-     */
-    public String getCode() {
-        return code;
-    }
-
-    /**
-     * Setter method for property <tt>code </tt>.
-     *
-     * @param code value to be assigned to property code
-     */
-    public void setCode(String code) {
-        this.code = code;
-    }
-
-    /**
-     * Getter method for property <tt>desc</tt>.
-     *
-     * @return property value of desc
-     */
-    public String getDesc() {
-        return desc;
-    }
-
-    /**
-     * Setter method for property <tt>desc </tt>.
-     *
-     * @param desc value to be assigned to property desc
-     */
-    public void setDesc(String desc) {
-        this.desc = desc;
-    }
     
     public static boolean contains(String code) {
 

nacossync-worker/src/main/java/com/alibaba/nacossync/dao/ClusterAccessService.java

@@ -16,10 +16,10 @@
  */
 package com.alibaba.nacossync.dao;
 
+import com.alibaba.nacossync.dao.repository.ClusterRepository;
 import com.alibaba.nacossync.pojo.QueryCondition;
+import com.alibaba.nacossync.pojo.model.ClusterDO;
 import lombok.extern.slf4j.Slf4j;
-
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
@@ -27,9 +27,6 @@ import org.springframework.data.domain.Sort;
 import org.springframework.data.jpa.domain.Specification;
 import org.springframework.stereotype.Service;
 
-import com.alibaba.nacossync.dao.repository.ClusterRepository;
-import com.alibaba.nacossync.pojo.model.ClusterDO;
-
 import javax.persistence.criteria.CriteriaBuilder;
 import javax.persistence.criteria.Predicate;
 import javax.persistence.criteria.Root;
@@ -44,8 +41,11 @@ import java.util.List;
 @Slf4j
 public class ClusterAccessService implements PageQueryService<ClusterDO> {
 
-    @Autowired
-    private ClusterRepository clusterRepository;
+    private final ClusterRepository clusterRepository;
+    
+    public ClusterAccessService(ClusterRepository clusterRepository) {
+        this.clusterRepository = clusterRepository;
+    }
     
     public ClusterDO insert(ClusterDO clusterDO) {
 

nacossync-worker/src/main/java/com/alibaba/nacossync/dao/TaskAccessService.java

@@ -14,11 +14,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.dao;
 
 import com.alibaba.nacossync.constant.SkyWalkerConstants;
+import com.alibaba.nacossync.dao.repository.TaskRepository;
 import com.alibaba.nacossync.pojo.QueryCondition;
-import org.springframework.beans.factory.annotation.Autowired;
+import com.alibaba.nacossync.pojo.model.TaskDO;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
@@ -26,9 +28,6 @@ import org.springframework.data.domain.Sort;
 import org.springframework.data.jpa.domain.Specification;
 import org.springframework.stereotype.Service;
 
-import com.alibaba.nacossync.dao.repository.TaskRepository;
-import com.alibaba.nacossync.pojo.model.TaskDO;
-
 import javax.persistence.criteria.CriteriaBuilder;
 import javax.persistence.criteria.Predicate;
 import javax.persistence.criteria.Root;
@@ -42,8 +41,11 @@ import java.util.List;
 @Service
 public class TaskAccessService implements PageQueryService<TaskDO> {
     
-    @Autowired
-    private TaskRepository taskRepository;
+    private final TaskRepository taskRepository;
+    
+    public TaskAccessService(TaskRepository taskRepository) {
+        this.taskRepository = taskRepository;
+    }
     
     public TaskDO findByTaskId(String taskId) {
         
@@ -56,8 +58,9 @@ public class TaskAccessService implements PageQueryService<TaskDO> {
     
     /**
      * batch delete tasks by taskIds
-     * @author yongchao9
+     *
      * @param taskIds
+     * @author yongchao9
      */
     public void deleteTaskInBatch(List<String> taskIds) {
         List<TaskDO> tds = taskRepository.findAllByTaskIdIn(taskIds);
@@ -75,12 +78,17 @@ public class TaskAccessService implements PageQueryService<TaskDO> {
         
     }
     
+    public int countByDestClusterIdOrSourceClusterId(String destClusterId, String sourceClusterId) {
+        return taskRepository.countByDestClusterIdOrSourceClusterId(destClusterId, sourceClusterId);
+    }
+    
     private Predicate getPredicate(CriteriaBuilder criteriaBuilder, List<Predicate> predicates) {
         Predicate[] p = new Predicate[predicates.size()];
         return criteriaBuilder.and(predicates.toArray(p));
     }
     
-    private List<Predicate> getPredicates(Root<TaskDO> root, CriteriaBuilder criteriaBuilder, QueryCondition queryCondition) {
+    private List<Predicate> getPredicates(Root<TaskDO> root, CriteriaBuilder criteriaBuilder,
+            QueryCondition queryCondition) {
         
         List<Predicate> predicates = new ArrayList<>();
         predicates.add(criteriaBuilder.like(root.get("serviceName"), "%" + queryCondition.getServiceName() + "%"));
@@ -105,11 +113,9 @@ public class TaskAccessService implements PageQueryService<TaskDO> {
     }
     
     private Page<TaskDO> getTaskDOS(QueryCondition queryCondition, Pageable pageable) {
-        return taskRepository.findAll(
-                (Specification<TaskDO>) (root, criteriaQuery, criteriaBuilder) -> {
+        return taskRepository.findAll((Specification<TaskDO>) (root, criteriaQuery, criteriaBuilder) -> {
             
-                    List<Predicate> predicates = getPredicates(root,
-                            criteriaBuilder, queryCondition);
+            List<Predicate> predicates = getPredicates(root, criteriaBuilder, queryCondition);
             
             return getPredicate(criteriaBuilder, predicates);
             

nacossync-worker/src/main/java/com/alibaba/nacossync/dao/repository/ClusterRepository.java

@@ -16,13 +16,13 @@
  */
 package com.alibaba.nacossync.dao.repository;
 
-import javax.transaction.Transactional;
-
+import com.alibaba.nacossync.pojo.model.ClusterDO;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
 import org.springframework.data.repository.CrudRepository;
 
-import com.alibaba.nacossync.pojo.model.ClusterDO;
+import javax.transaction.Transactional;
+
 
 /**
  * @author NacosSync
@@ -34,6 +34,6 @@ public interface ClusterRepository extends CrudRepository<ClusterDO, Integer>, J
     ClusterDO findByClusterId(String clusterId);
 
     @Transactional
-    int deleteByClusterId(String clusterId);
+    void deleteByClusterId(String clusterId);
 
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/dao/repository/TaskRepository.java

@@ -34,18 +34,15 @@ public interface TaskRepository extends CrudRepository<TaskDO, Integer>, JpaRepo
     TaskDO findByTaskId(String taskId);
 
     @Transactional
-    int deleteByTaskId(String taskId);
+    void deleteByTaskId(String taskId);
     
     List<TaskDO> findAllByTaskIdIn(List<String> taskIds);
-    
-    List<TaskDO> getAllByWorkerIp(String workerIp);
-    
     /**
      * query service is all，use ns leven sync data
-     * @param serviceName
-     * @return
      */
     List<TaskDO> findAllByServiceNameEqualsIgnoreCase(String serviceName);
     List<TaskDO> findAllByServiceNameNotIgnoreCase(String serviceName);
     
+    int countByDestClusterIdOrSourceClusterId(String destClusterId,String sourceClusterId);
+
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/event/listener/EventListener.java

@@ -14,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.event.listener;
 
 import com.alibaba.nacossync.cache.SkyWalkerCacheServices;
@@ -22,10 +23,10 @@ import com.alibaba.nacossync.event.DeleteTaskEvent;
 import com.alibaba.nacossync.event.SyncTaskEvent;
 import com.alibaba.nacossync.extension.SyncManagerService;
 import com.alibaba.nacossync.monitor.MetricsManager;
+import com.google.common.base.Stopwatch;
 import com.google.common.eventbus.EventBus;
 import com.google.common.eventbus.Subscribe;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import javax.annotation.PostConstruct;
@@ -38,17 +39,21 @@ import javax.annotation.PostConstruct;
 @Service
 public class EventListener {
     
-    @Autowired
-    private MetricsManager metricsManager;
+    private final MetricsManager metricsManager;
     
-    @Autowired
-    private SyncManagerService syncManagerService;
+    private final SyncManagerService syncManagerService;
     
-    @Autowired
-    private EventBus eventBus;
+    private final EventBus eventBus;
     
-    @Autowired
-    private SkyWalkerCacheServices skyWalkerCacheServices;
+    private final SkyWalkerCacheServices skyWalkerCacheServices;
+    
+    public EventListener(MetricsManager metricsManager, SyncManagerService syncManagerService, EventBus eventBus,
+            SkyWalkerCacheServices skyWalkerCacheServices) {
+        this.metricsManager = metricsManager;
+        this.syncManagerService = syncManagerService;
+        this.eventBus = eventBus;
+        this.skyWalkerCacheServices = skyWalkerCacheServices;
+    }
     
     @PostConstruct
     public void register() {
@@ -56,35 +61,36 @@ public class EventListener {
     }
     
     @Subscribe
-    public void listenerSyncTaskEvent(SyncTaskEvent syncTaskEvent) {
+    public void sync(SyncTaskEvent syncTaskEvent) {
         
         try {
-            long start = System.currentTimeMillis();
+            
+            Stopwatch stopwatch = Stopwatch.createStarted();
             if (syncManagerService.sync(syncTaskEvent.getTaskDO(), null)) {
                 skyWalkerCacheServices.addFinishedTask(syncTaskEvent.getTaskDO());
-                metricsManager.record(MetricsStatisticsType.SYNC_TASK_RT, System.currentTimeMillis() - start);
+                metricsManager.record(MetricsStatisticsType.SYNC_TASK_RT, stopwatch.elapsed().toMillis());
             } else {
-                log.warn("listenerSyncTaskEvent sync failure");
+                log.warn("syncTaskEvent process error");
             }
         } catch (Exception e) {
-            log.warn("listenerSyncTaskEvent process error", e);
+            log.warn("syncTaskEvent process error", e);
         }
         
     }
     
     @Subscribe
-    public void listenerDeleteTaskEvent(DeleteTaskEvent deleteTaskEvent) {
+    public void delete(DeleteTaskEvent deleteTaskEvent) {
         
         try {
-            long start = System.currentTimeMillis();
+            Stopwatch stopwatch = Stopwatch.createStarted();
             if (syncManagerService.delete(deleteTaskEvent.getTaskDO())) {
                 skyWalkerCacheServices.removeFinishedTask(deleteTaskEvent.getTaskDO().getOperationId());
-                metricsManager.record(MetricsStatisticsType.DELETE_TASK_RT, System.currentTimeMillis() - start);
+                metricsManager.record(MetricsStatisticsType.DELETE_TASK_RT, stopwatch.elapsed().toMillis());
             } else {
-                log.warn("listenerDeleteTaskEvent delete failure");
+                log.warn("deleteTaskEvent delete failure");
             }
         } catch (Exception e) {
-            log.warn("listenerDeleteTaskEvent process error", e);
+            log.warn("deleteTaskEvent delete failure.", e);
         }
     }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/SyncManagerService.java

@@ -39,7 +39,7 @@ public class SyncManagerService implements InitializingBean, ApplicationContextA
 
     protected final SkyWalkerCacheServices skyWalkerCacheServices;
 
-    private ConcurrentHashMap<String, SyncService> syncServiceMap = new ConcurrentHashMap<String, SyncService>();
+    private final ConcurrentHashMap<String, SyncService> syncServiceMap = new ConcurrentHashMap<String, SyncService>();
 
     private ApplicationContext applicationContext;
 

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/SyncService.java

@@ -14,9 +14,10 @@ package com.alibaba.nacossync.extension;
 
 import com.alibaba.nacossync.constant.SkyWalkerConstants;
 import com.alibaba.nacossync.pojo.model.TaskDO;
-import java.util.Map;
 import org.apache.commons.lang3.StringUtils;
 
+import java.util.Map;
+
 /**
  * @author NacosSync
  * @version $Id: SyncManagerService.java, v 0.1 2018-09-25 下午5:17 NacosSync Exp $$
@@ -32,7 +33,6 @@ public interface SyncService {
     boolean delete(TaskDO taskDO);
     
     /**
-     * execute sync
      *
      * @param taskDO
      * @param index
@@ -45,7 +45,7 @@ public interface SyncService {
      */
     default boolean needSync(Map<String, String> sourceMetaData) {
         boolean syncTag = StringUtils.isBlank(sourceMetaData.get(SkyWalkerConstants.SYNC_INSTANCE_TAG));
-        boolean blank = StringUtils.isBlank(sourceMetaData.get(SkyWalkerConstants.SOURCE_CLUSTERID_KEY));
+        boolean blank = StringUtils.isBlank(sourceMetaData.get(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY));
         return syncTag && blank;
     }
 
@@ -54,7 +54,7 @@ public interface SyncService {
      * cluster ID of the task
      */
     default boolean needDelete(Map<String, String> destMetaData, TaskDO taskDO) {
-        return StringUtils.equals(destMetaData.get(SkyWalkerConstants.SOURCE_CLUSTERID_KEY),
+        return StringUtils.equals(destMetaData.get(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY),
                 taskDO.getSourceClusterId());
     }
 

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/client/InstanceQueryModel.java

@@ -1,15 +0,0 @@
-package com.alibaba.nacossync.extension.client;
-
-import lombok.Data;
-
-@Data
-public class InstanceQueryModel {
-
-    private String sourceClusterId;
-    private String destClusterId;
-    private String serviceName;
-    private String groupName;
-    private String version;
-    private int pageNo;
-    private int pageSize;
-}

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/client/SyncQueryClient.java

@@ -1,12 +0,0 @@
-package com.alibaba.nacossync.extension.client;
-
-import com.alibaba.nacossync.pojo.view.TaskModel;
-import java.util.List;
-
-public interface SyncQueryClient {
-
-
-    List<TaskModel> getAllInstance(InstanceQueryModel instanceQueryModel);
-    
-   
-}

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/client/impl/NacosSyncQueryClientImpl.java

@@ -1,54 +0,0 @@
-package com.alibaba.nacossync.extension.client.impl;
-
-import com.alibaba.nacos.api.exception.NacosException;
-import com.alibaba.nacos.api.naming.NamingService;
-import com.alibaba.nacos.api.naming.pojo.ListView;
-import com.alibaba.nacossync.extension.client.InstanceQueryModel;
-import com.alibaba.nacossync.extension.client.SyncQueryClient;
-import com.alibaba.nacossync.extension.holder.NacosServerHolder;
-import com.alibaba.nacossync.pojo.view.TaskModel;
-import java.util.Collections;
-import java.util.List;
-import java.util.stream.Collectors;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.stereotype.Service;
-
-@Service
-@Slf4j
-public class NacosSyncQueryClientImpl implements SyncQueryClient {
-
-    private final NacosServerHolder nacosServerHolder;
-
-    public NacosSyncQueryClientImpl(
-            NacosServerHolder nacosServerHolder) {
-        this.nacosServerHolder = nacosServerHolder;
-    }
-
-    @Override
-    public List<TaskModel> getAllInstance(InstanceQueryModel instanceQueryModel) {
-        NamingService namingService = nacosServerHolder
-                .get(instanceQueryModel.getSourceClusterId());
-        try {
-            ListView<String> servicesOfServer = namingService
-                    .getServicesOfServer(instanceQueryModel.getPageNo(),
-                            instanceQueryModel.getPageSize());
-            return servicesOfServer.getData().stream()
-                    .map(serviceName -> buildTaskModel(instanceQueryModel, serviceName))
-                    .collect(Collectors.toList());
-
-        } catch (NacosException e) {
-            log.error("When using nacos client failure query tasks", e);
-            return Collections.emptyList();
-        }
-    }
-
-    private TaskModel buildTaskModel(InstanceQueryModel instanceQueryModel, String serviceName) {
-        TaskModel taskModel = new TaskModel();
-        taskModel.setServiceName(serviceName);
-        taskModel.setSourceClusterId(instanceQueryModel.getSourceClusterId());
-        taskModel.setDestClusterId(instanceQueryModel.getDestClusterId());
-        return taskModel;
-    }
-
-
-}

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/eureka/EurekaBeatReactor.java

@@ -29,11 +29,11 @@ import java.util.concurrent.TimeUnit;
  */
 @Slf4j
 public class EurekaBeatReactor {
-    private ScheduledExecutorService executorService;
+    private final ScheduledExecutorService executorService;
 
-    private volatile long clientBeatInterval = 5 * 1000;
+    private static final long CLIENT_BEAT_INTERVAL = 5 * 1000;
     private final Map<String, InstanceInfo> eurekaBeat = new ConcurrentHashMap<>();
-    private EurekaHttpClient eurekaHttpClient;
+    private final EurekaHttpClient eurekaHttpClient;
 
     public EurekaBeatReactor(EurekaHttpClient eurekaHttpClient) {
         this.eurekaHttpClient = eurekaHttpClient;
@@ -71,7 +71,7 @@ public class EurekaBeatReactor {
             } catch (Exception e) {
                 log.error("[CLIENT-BEAT] Exception while scheduling beat.", e);
             } finally {
-                executorService.schedule(this, clientBeatInterval, TimeUnit.MILLISECONDS);
+                executorService.schedule(this, CLIENT_BEAT_INTERVAL, TimeUnit.MILLISECONDS);
             }
         }
     }

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/eureka/EurekaNamingService.java

@@ -26,8 +26,8 @@ import java.util.Objects;
  * @date 2019-06-26
  */
 public class EurekaNamingService {
-    private EurekaHttpClient eurekaHttpClient;
-    private EurekaBeatReactor beatReactor;
+    private final EurekaHttpClient eurekaHttpClient;
+    private final EurekaBeatReactor beatReactor;
 
 
     public EurekaNamingService(EurekaHttpClient eurekaHttpClient) {

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/event/SpecialSyncEventBus.java

@@ -25,7 +25,7 @@ import java.util.function.Consumer;
  */
 @Service
 public class SpecialSyncEventBus {
-    private ConcurrentHashMap<String, SpecialSyncEvent> specialSyncEventRegistry = new ConcurrentHashMap<>();
+    private final ConcurrentHashMap<String, SpecialSyncEvent> specialSyncEventRegistry = new ConcurrentHashMap<>();
 
     public void subscribe(TaskDO taskDO, Consumer<TaskDO> syncAction) {
         SpecialSyncEvent specialSyncEvent = new SpecialSyncEvent();

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/event/listener/SpecialSyncEventListener.java

@@ -21,7 +21,6 @@ import com.alibaba.nacossync.pojo.model.TaskDO;
 import com.google.common.eventbus.EventBus;
 import com.google.common.eventbus.Subscribe;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import javax.annotation.PostConstruct;
@@ -34,8 +33,11 @@ import java.util.function.Consumer;
 @Service
 @Slf4j
 public class SpecialSyncEventListener {
-    @Autowired
-    private EventBus eventBus;
+    private final EventBus eventBus;
+    
+    public SpecialSyncEventListener(EventBus eventBus) {
+        this.eventBus = eventBus;
+    }
     
     @PostConstruct
     public void init() {

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/holder/AbstractServerHolderImpl.java

@@ -27,7 +27,8 @@ import java.util.function.Supplier;
 @Slf4j
 public abstract class AbstractServerHolderImpl<T> implements Holder<T> {
     
-    protected final Map<String, T> serviceMap = new ConcurrentHashMap<>();
+    private final Map<String, T> serviceMap = new ConcurrentHashMap<>();
+
     
     @Autowired
     protected SkyWalkerCacheServices skyWalkerCacheServices;

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/impl/ConsulSyncToNacosServiceImpl.java

@@ -32,13 +32,13 @@ import com.ecwid.consul.v1.ConsulClient;
 import com.ecwid.consul.v1.QueryParams;
 import com.ecwid.consul.v1.Response;
 import com.ecwid.consul.v1.health.model.HealthService;
+import lombok.extern.slf4j.Slf4j;
+
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 
 /**
  * Consul 同步 Nacos
@@ -50,8 +50,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 @NacosSyncService(sourceCluster = ClusterTypeEnum.CONSUL, destinationCluster = ClusterTypeEnum.NACOS)
 public class ConsulSyncToNacosServiceImpl implements SyncService {
 
-    @Autowired
-    private MetricsManager metricsManager;
+    private final MetricsManager metricsManager;
 
     private final ConsulServerHolder consulServerHolder;
     private final SkyWalkerCacheServices skyWalkerCacheServices;
@@ -60,14 +59,15 @@ public class ConsulSyncToNacosServiceImpl implements SyncService {
 
     private final SpecialSyncEventBus specialSyncEventBus;
 
-    @Autowired
+    
     public ConsulSyncToNacosServiceImpl(ConsulServerHolder consulServerHolder,
         SkyWalkerCacheServices skyWalkerCacheServices, NacosServerHolder nacosServerHolder,
-        SpecialSyncEventBus specialSyncEventBus) {
+        SpecialSyncEventBus specialSyncEventBus, MetricsManager metricsManager) {
         this.consulServerHolder = consulServerHolder;
         this.skyWalkerCacheServices = skyWalkerCacheServices;
         this.nacosServerHolder = nacosServerHolder;
         this.specialSyncEventBus = specialSyncEventBus;
+        this.metricsManager = metricsManager;
     }
 
     @Override
@@ -146,10 +146,10 @@ public class ConsulSyncToNacosServiceImpl implements SyncService {
         temp.setIp(instance.getService().getAddress());
         temp.setPort(instance.getService().getPort());
         Map<String, String> metaData = new HashMap<>(ConsulUtils.transferMetadata(instance.getService().getTags()));
-        metaData.put(SkyWalkerConstants.DEST_CLUSTERID_KEY, taskDO.getDestClusterId());
+        metaData.put(SkyWalkerConstants.DEST_CLUSTER_ID_KEY, taskDO.getDestClusterId());
         metaData.put(SkyWalkerConstants.SYNC_SOURCE_KEY,
             skyWalkerCacheServices.getClusterType(taskDO.getSourceClusterId()).getCode());
-        metaData.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, taskDO.getSourceClusterId());
+        metaData.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, taskDO.getSourceClusterId());
         temp.setMetadata(metaData);
         return temp;
     }

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/impl/EurekaSyncToNacosServiceImpl.java

@@ -29,13 +29,14 @@ import com.alibaba.nacossync.monitor.MetricsManager;
 import com.alibaba.nacossync.pojo.model.TaskDO;
 import com.alibaba.nacossync.util.NacosUtils;
 import com.netflix.appinfo.InstanceInfo;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.util.CollectionUtils;
 
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 /**
  * eureka
  *
@@ -182,10 +183,10 @@ public class EurekaSyncToNacosServiceImpl implements SyncService {
         temp.setHealthy(true);
 
         Map<String, String> metaData = new HashMap<>(instance.getMetadata());
-        metaData.put(SkyWalkerConstants.DEST_CLUSTERID_KEY, taskDO.getDestClusterId());
+        metaData.put(SkyWalkerConstants.DEST_CLUSTER_ID_KEY, taskDO.getDestClusterId());
         metaData.put(SkyWalkerConstants.SYNC_SOURCE_KEY,
             skyWalkerCacheServices.getClusterType(taskDO.getSourceClusterId()).getCode());
-        metaData.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, taskDO.getSourceClusterId());
+        metaData.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, taskDO.getSourceClusterId());
         temp.setMetadata(metaData);
         return temp;
     }

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/impl/NacosSyncToConsulServiceImpl.java

@@ -44,6 +44,8 @@ import java.util.stream.Collectors;
 public class NacosSyncToConsulServiceImpl extends AbstractNacosSync {
     
     
+    private static final String DELIMITER = "=";
+    
     private final SkyWalkerCacheServices skyWalkerCacheServices;
     
     private final ConsulServerHolder consulServerHolder;
@@ -57,7 +59,7 @@ public class NacosSyncToConsulServiceImpl extends AbstractNacosSync {
     
     @Override
     public String composeInstanceKey(String ip, int port) {
-        return ip + ":" + port;
+        return String.join(":", ip, String.valueOf(port));
     }
     
     @Override
@@ -76,7 +78,7 @@ public class NacosSyncToConsulServiceImpl extends AbstractNacosSync {
             
             if (needDelete(ConsulUtils.transferMetadata(healthService.getService().getTags()), taskDO)) {
                 consulClient.agentServiceDeregister(
-                        URLEncoder.encode(healthService.getService().getId(), StandardCharsets.UTF_8.name()));
+                        URLEncoder.encode(healthService.getService().getId(), StandardCharsets.UTF_8));
             }
         }
     }
@@ -94,7 +96,7 @@ public class NacosSyncToConsulServiceImpl extends AbstractNacosSync {
                     && !invalidInstanceKeys.contains(composeInstanceKey(healthService.getService().getAddress(),
                     healthService.getService().getPort()))) {
                 consulClient.agentServiceDeregister(
-                        URLEncoder.encode(healthService.getService().getId(), StandardCharsets.UTF_8.toString()));
+                        URLEncoder.encode(healthService.getService().getId(), StandardCharsets.UTF_8));
             }
         }
     }
@@ -107,11 +109,11 @@ public class NacosSyncToConsulServiceImpl extends AbstractNacosSync {
         newService.setId(instance.getInstanceId());
         List<String> tags = Lists.newArrayList();
         tags.addAll(instance.getMetadata().entrySet().stream()
-                .map(entry -> String.join("=", entry.getKey(), entry.getValue())).collect(Collectors.toList()));
-        tags.add(String.join("=", SkyWalkerConstants.DEST_CLUSTERID_KEY, taskDO.getDestClusterId()));
-        tags.add(String.join("=", SkyWalkerConstants.SYNC_SOURCE_KEY,
+                .map(entry -> String.join(DELIMITER, entry.getKey(), entry.getValue())).collect(Collectors.toList()));
+        tags.add(String.join(DELIMITER, SkyWalkerConstants.DEST_CLUSTER_ID_KEY, taskDO.getDestClusterId()));
+        tags.add(String.join(DELIMITER, SkyWalkerConstants.SYNC_SOURCE_KEY,
                 skyWalkerCacheServices.getClusterType(taskDO.getSourceClusterId()).getCode()));
-        tags.add(String.join("=", SkyWalkerConstants.SOURCE_CLUSTERID_KEY, taskDO.getSourceClusterId()));
+        tags.add(String.join(DELIMITER, SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, taskDO.getSourceClusterId()));
         newService.setTags(tags);
         return newService;
     }

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/impl/NacosSyncToEurekaServiceImpl.java

@@ -95,10 +95,10 @@ public class NacosSyncToEurekaServiceImpl extends AbstractNacosSync {
         DataCenterInfo dataCenterInfo = new MyDataCenterInfo(DataCenterInfo.Name.MyOwn);
         final Map<String, String> instanceMetadata = instance.getMetadata();
         HashMap<String, String> metadata = new HashMap<>(16);
-        metadata.put(SkyWalkerConstants.DEST_CLUSTERID_KEY, taskDO.getDestClusterId());
+        metadata.put(SkyWalkerConstants.DEST_CLUSTER_ID_KEY, taskDO.getDestClusterId());
         metadata.put(SkyWalkerConstants.SYNC_SOURCE_KEY,
                 skyWalkerCacheServices.getClusterType(taskDO.getSourceClusterId()).getCode());
-        metadata.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, taskDO.getSourceClusterId());
+        metadata.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, taskDO.getSourceClusterId());
         metadata.putAll(instanceMetadata);
         String homePageUrl = obtainHomePageUrl(instance, instanceMetadata);
         String serviceName = taskDO.getServiceName();

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/impl/NacosSyncToNacosServiceImpl.java

@@ -47,7 +47,7 @@ import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
-import static com.alibaba.nacossync.constant.SkyWalkerConstants.SOURCE_CLUSTERID_KEY;
+import static com.alibaba.nacossync.constant.SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY;
 import static com.alibaba.nacossync.util.NacosUtils.getGroupNameOrDefault;
 
 /**
@@ -343,7 +343,7 @@ public class NacosSyncToNacosServiceImpl implements SyncService, InitializingBea
     
     private boolean hasSync(Instance instance, String sourceClusterId) {
         if (instance.getMetadata() != null) {
-            String sourceClusterKey = instance.getMetadata().get(SkyWalkerConstants.SOURCE_CLUSTERID_KEY);
+            String sourceClusterKey = instance.getMetadata().get(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY);
             return sourceClusterKey != null && sourceClusterKey.equals(sourceClusterId);
         }
         return false;
@@ -355,7 +355,7 @@ public class NacosSyncToNacosServiceImpl implements SyncService, InitializingBea
      * if the target cluster still has instances synchronized with the source cluster,
      * perform unregistration.
      *
-     * @param destNamingService
+     * @param destNamingService Destination cluster naming service
      * @throws NacosException
      */
     private void processDeRegisterInstances(TaskDO taskDO, NamingService destNamingService) throws NacosException {
@@ -379,7 +379,7 @@ public class NacosSyncToNacosServiceImpl implements SyncService, InitializingBea
     
     private List<Instance> filterInstancesForRemoval(List<Instance> destInstances, String sourceClusterId) {
         return destInstances.stream().filter(instance -> !instance.getMetadata().isEmpty())
-                .filter(instance -> needDeregister(instance.getMetadata().get(SOURCE_CLUSTERID_KEY), sourceClusterId))
+                .filter(instance -> needDeregister(instance.getMetadata().get(SOURCE_CLUSTER_ID_KEY), sourceClusterId))
                 .collect(Collectors.toList());
         
     }
@@ -398,16 +398,16 @@ public class NacosSyncToNacosServiceImpl implements SyncService, InitializingBea
         }
         // Central cluster, as long as the instance is not from the target cluster,
         // it needs to be synchronized (extended functionality)
-        return !destClusterId.equals(sourceMetaData.get(SOURCE_CLUSTERID_KEY));
+        return !destClusterId.equals(sourceMetaData.get(SOURCE_CLUSTER_ID_KEY));
     }
     
     
     private Instance buildSyncInstance(Instance instance, TaskDO taskDO) {
         Instance temp = getInstance(instance);
-        temp.addMetadata(SkyWalkerConstants.DEST_CLUSTERID_KEY, taskDO.getDestClusterId());
+        temp.addMetadata(SkyWalkerConstants.DEST_CLUSTER_ID_KEY, taskDO.getDestClusterId());
         temp.addMetadata(SkyWalkerConstants.SYNC_SOURCE_KEY,
                 skyWalkerCacheServices.getClusterType(taskDO.getSourceClusterId()).getCode());
-        temp.addMetadata(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, taskDO.getSourceClusterId());
+        temp.addMetadata(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, taskDO.getSourceClusterId());
         //The flag is a synchronous instance
         temp.addMetadata(SkyWalkerConstants.SYNC_INSTANCE_TAG,
                 taskDO.getSourceClusterId() + "@@" + taskDO.getVersion());

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/impl/NacosSyncToZookeeperServiceImpl.java

@@ -35,7 +35,6 @@ import org.apache.curator.framework.recipes.cache.PathChildrenCache;
 import org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent;
 import org.apache.curator.utils.CloseableUtils;
 import org.apache.zookeeper.CreateMode;
-import org.springframework.beans.factory.annotation.Autowired;
 
 import java.io.UnsupportedEncodingException;
 import java.util.ArrayList;
@@ -60,8 +59,7 @@ import static com.alibaba.nacossync.util.StringUtils.convertDubboProvidersPath;
 @NacosSyncService(sourceCluster = ClusterTypeEnum.NACOS, destinationCluster = ClusterTypeEnum.ZK)
 public class NacosSyncToZookeeperServiceImpl implements SyncService {
 
-    @Autowired
-    private MetricsManager metricsManager;
+    private final MetricsManager metricsManager;
 
     /**
      * @description The Nacos listener map.
@@ -93,12 +91,13 @@ public class NacosSyncToZookeeperServiceImpl implements SyncService {
 
     private final ZookeeperServerHolder zookeeperServerHolder;
 
-    @Autowired
+  
     public NacosSyncToZookeeperServiceImpl(SkyWalkerCacheServices skyWalkerCacheServices,
-        NacosServerHolder nacosServerHolder, ZookeeperServerHolder zookeeperServerHolder) {
+        NacosServerHolder nacosServerHolder, ZookeeperServerHolder zookeeperServerHolder, MetricsManager metricsManager) {
         this.skyWalkerCacheServices = skyWalkerCacheServices;
         this.nacosServerHolder = nacosServerHolder;
         this.zookeeperServerHolder = zookeeperServerHolder;
+        this.metricsManager = metricsManager;
     }
 
     @Override
@@ -141,11 +140,11 @@ public class NacosSyncToZookeeperServiceImpl implements SyncService {
                             getGroupNameOrDefault(taskDO.getGroupName()), new ArrayList<>(), true);
                         Set<String> newInstanceUrlSet = getWaitingToAddInstance(taskDO, client, sourceInstances);
 
-                        // 获取之前的备份 删除无效实例
+                        // fetch the instance backup
                         deleteInvalidInstances(taskDO, client, newInstanceUrlSet);
-                        // 替换当前备份为最新备份
+                        // replace the instance backup
                         instanceBackupMap.put(taskDO.getTaskId(), newInstanceUrlSet);
-                        // 尝试恢复因为zk客户端意外断开导致的实例数据
+                        // try to compensate for the removed instance
                         tryToCompensate(taskDO, sourceNamingService, sourceInstances);
                     } catch (Exception e) {
                         log.error("event process fail, taskId:{}", taskDO.getTaskId(), e);
@@ -236,10 +235,10 @@ public class NacosSyncToZookeeperServiceImpl implements SyncService {
 
     protected String buildSyncInstance(Instance instance, TaskDO taskDO) throws UnsupportedEncodingException {
         Map<String, String> metaData = new HashMap<>(instance.getMetadata());
-        metaData.put(SkyWalkerConstants.DEST_CLUSTERID_KEY, taskDO.getDestClusterId());
+        metaData.put(SkyWalkerConstants.DEST_CLUSTER_ID_KEY, taskDO.getDestClusterId());
         metaData.put(SkyWalkerConstants.SYNC_SOURCE_KEY,
             skyWalkerCacheServices.getClusterType(taskDO.getSourceClusterId()).getCode());
-        metaData.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, taskDO.getSourceClusterId());
+        metaData.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, taskDO.getSourceClusterId());
 
         String servicePath = monitorPath.computeIfAbsent(taskDO.getTaskId(),
             key -> convertDubboProvidersPath(metaData.get(DubboConstants.INTERFACE_KEY)));
@@ -249,10 +248,10 @@ public class NacosSyncToZookeeperServiceImpl implements SyncService {
 
 
     /**
-     * 获取zk path child 监听缓存类
+     * fetch zk path cache
      *
-     * @param taskDO 任务对象
-     * @return zk节点操作缓存对象
+     * @param taskDO task instance
+     * @return zk path cache
      */
     private PathChildrenCache getPathCache(TaskDO taskDO) {
         return pathChildrenCacheMap.computeIfAbsent(taskDO.getTaskId(), (key) -> {

nacossync-worker/src/main/java/com/alibaba/nacossync/extension/impl/ZookeeperSyncToNacosServiceImpl.java

@@ -32,7 +32,6 @@ import org.apache.curator.framework.CuratorFramework;
 import org.apache.curator.framework.recipes.cache.TreeCache;
 import org.apache.curator.framework.recipes.cache.TreeCacheEvent;
 import org.apache.curator.utils.CloseableUtils;
-import org.springframework.beans.factory.annotation.Autowired;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -71,18 +70,17 @@ public class ZookeeperSyncToNacosServiceImpl implements SyncService {
     
     private static final String DEFAULT_WEIGHT = "1.0";
     
-    @Autowired
-    private MetricsManager metricsManager;
+    private final MetricsManager metricsManager;
     
     /**
      * Listener cache of Zookeeper format taskId -> PathChildrenCache instance
      */
-    private Map<String, TreeCache> treeCacheMap = new ConcurrentHashMap<>();
+    private final Map<String, TreeCache> treeCacheMap = new ConcurrentHashMap<>();
     
     /**
      * service name cache
      */
-    private Map<String, String> nacosServiceNameMap = new ConcurrentHashMap<>();
+    private final Map<String, String> nacosServiceNameMap = new ConcurrentHashMap<>();
     
     private final ZookeeperServerHolder zookeeperServerHolder;
     
@@ -90,12 +88,14 @@ public class ZookeeperSyncToNacosServiceImpl implements SyncService {
     
     private final SkyWalkerCacheServices skyWalkerCacheServices;
     
-    @Autowired
+   
     public ZookeeperSyncToNacosServiceImpl(ZookeeperServerHolder zookeeperServerHolder,
-            NacosServerHolder nacosServerHolder, SkyWalkerCacheServices skyWalkerCacheServices) {
+            NacosServerHolder nacosServerHolder, SkyWalkerCacheServices skyWalkerCacheServices,
+            MetricsManager metricsManager) {
         this.zookeeperServerHolder = zookeeperServerHolder;
         this.nacosServerHolder = nacosServerHolder;
         this.skyWalkerCacheServices = skyWalkerCacheServices;
+        this.metricsManager = metricsManager;
     }
     
     @Override
@@ -292,9 +292,9 @@ public class ZookeeperSyncToNacosServiceImpl implements SyncService {
     private Map<String, String> buildMetadata(Map<String, String> queryParam, Map<String, String> ipAndPortMap, TaskDO taskDO) {
         Map<String, String> metaData = new HashMap<>(queryParam);
         metaData.put(PROTOCOL_KEY, ipAndPortMap.get(PROTOCOL_KEY));
-        metaData.put(SkyWalkerConstants.DEST_CLUSTERID_KEY, taskDO.getDestClusterId());
+        metaData.put(SkyWalkerConstants.DEST_CLUSTER_ID_KEY, taskDO.getDestClusterId());
         metaData.put(SkyWalkerConstants.SYNC_SOURCE_KEY, skyWalkerCacheServices.getClusterType(taskDO.getSourceClusterId()).getCode());
-        metaData.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, taskDO.getSourceClusterId());
+        metaData.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, taskDO.getSourceClusterId());
         return metaData;
     }
     

nacossync-worker/src/main/java/com/alibaba/nacossync/monitor/MetricsManager.java

@@ -23,14 +23,18 @@ import java.util.concurrent.TimeUnit;
 @Service
 public class MetricsManager implements CommandLineRunner {
 
-    @Autowired
-    private SkyWalkerCacheServices skyWalkerCacheServices;
+    private final SkyWalkerCacheServices skyWalkerCacheServices;
 
-    @Autowired
-    private ClusterAccessService clusterAccessService;
+    private final ClusterAccessService clusterAccessService;
 
-    @Autowired
-    private TaskAccessService taskAccessService;
+    private final TaskAccessService taskAccessService;
+    
+    public MetricsManager(SkyWalkerCacheServices skyWalkerCacheServices, ClusterAccessService clusterAccessService,
+            TaskAccessService taskAccessService) {
+        this.skyWalkerCacheServices = skyWalkerCacheServices;
+        this.clusterAccessService = clusterAccessService;
+        this.taskAccessService = taskAccessService;
+    }
     
     /**
      * Callback used to run the bean.

nacossync-worker/src/main/java/com/alibaba/nacossync/pojo/model/ClusterDO.java

@@ -17,17 +17,28 @@
 package com.alibaba.nacossync.pojo.model;
 
 import com.alibaba.nacossync.constant.ClusterTypeEnum;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+import org.hibernate.proxy.HibernateProxy;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
 import java.io.Serializable;
-
-import javax.persistence.*;
-
-import lombok.Data;
+import java.util.Objects;
 
 /**
  * @author NacosSync
  * @version $Id: EnvDO.java, v 0.1 2018-09-25 PM 4:17 NacosSync Exp $$
  */
-@Data
+@Getter
+@Setter
+@ToString
+@RequiredArgsConstructor
 @Entity
 @Table(name = "cluster")
 public class ClusterDO implements Serializable {
@@ -70,4 +81,30 @@ public class ClusterDO implements Serializable {
     
     private Integer clusterLevel;
     
+    @Override
+    public final boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null) {
+            return false;
+        }
+        Class<?> oEffectiveClass =
+                o instanceof HibernateProxy ? ((HibernateProxy) o).getHibernateLazyInitializer().getPersistentClass()
+                        : o.getClass();
+        Class<?> thisEffectiveClass =
+                this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer()
+                        .getPersistentClass() : this.getClass();
+        if (thisEffectiveClass != oEffectiveClass) {
+            return false;
+        }
+        ClusterDO clusterDO = (ClusterDO) o;
+        return getId() != null && Objects.equals(getId(), clusterDO.getId());
+    }
+    
+    @Override
+    public final int hashCode() {
+        return this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer()
+                .getPersistentClass().hashCode() : getClass().hashCode();
+    }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/pojo/model/SystemConfigDO.java

@@ -16,15 +16,28 @@
  */
 package com.alibaba.nacossync.pojo.model;
 
-import javax.persistence.*;
 
-import lombok.Data;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+import org.hibernate.proxy.HibernateProxy;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import java.util.Objects;
 
 /**
  * @author NacosSync
  * @version $Id: SystemConfig.java, v 0.1 2018-09-26 上午1:48 NacosSync Exp $$
  */
-@Data
+@Getter
+@Setter
+@ToString
+@RequiredArgsConstructor
 @Entity
 @Table(name = "system_config")
 public class SystemConfigDO {
@@ -35,4 +48,30 @@ public class SystemConfigDO {
     private String  configValue;
     private String  configDesc;
     
+    @Override
+    public final boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null) {
+            return false;
+        }
+        Class<?> oEffectiveClass =
+                o instanceof HibernateProxy ? ((HibernateProxy) o).getHibernateLazyInitializer().getPersistentClass()
+                        : o.getClass();
+        Class<?> thisEffectiveClass =
+                this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer()
+                        .getPersistentClass() : this.getClass();
+        if (thisEffectiveClass != oEffectiveClass) {
+            return false;
+        }
+        SystemConfigDO that = (SystemConfigDO) o;
+        return getId() != null && Objects.equals(getId(), that.getId());
+    }
+    
+    @Override
+    public final int hashCode() {
+        return this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer()
+                .getPersistentClass().hashCode() : getClass().hashCode();
+    }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/pojo/model/TaskDO.java

@@ -12,16 +12,29 @@
  */
 package com.alibaba.nacossync.pojo.model;
 
-import lombok.Data;
 
-import javax.persistence.*;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+import org.hibernate.proxy.HibernateProxy;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
 import java.io.Serializable;
+import java.util.Objects;
 
 /**
  * @author NacosSync
  * @version $Id: TaskDo.java, v 0.1 2018-09-24 PM11:53 NacosSync Exp $$
  */
-@Data
+@Getter
+@Setter
+@ToString
+@RequiredArgsConstructor
 @Entity
 @Table(name = "task")
 public class TaskDO implements Serializable {
@@ -71,4 +84,30 @@ public class TaskDO implements Serializable {
      */
     private String operationId;
     
+    @Override
+    public final boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null) {
+            return false;
+        }
+        Class<?> oEffectiveClass =
+                o instanceof HibernateProxy ? ((HibernateProxy) o).getHibernateLazyInitializer().getPersistentClass()
+                        : o.getClass();
+        Class<?> thisEffectiveClass =
+                this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer()
+                        .getPersistentClass() : this.getClass();
+        if (thisEffectiveClass != oEffectiveClass) {
+            return false;
+        }
+        TaskDO taskDO = (TaskDO) o;
+        return getId() != null && Objects.equals(getId(), taskDO.getId());
+    }
+    
+    @Override
+    public final int hashCode() {
+        return this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer()
+                .getPersistentClass().hashCode() : getClass().hashCode();
+    }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/pojo/request/ClusterAddRequest.java

@@ -17,10 +17,10 @@
 package com.alibaba.nacossync.pojo.request;
 
 import com.alibaba.nacossync.constant.ClusterTypeEnum;
-import java.util.List;
-
 import lombok.Data;
 
+import java.util.List;
+
 /**
  * @author NacosSync
  * @version $Id: AddClusterRequest.java, v 0.1 2018-09-25 PM 10:27 NacosSync Exp $$

nacossync-worker/src/main/java/com/alibaba/nacossync/pojo/view/ClusterModel.java

@@ -14,13 +14,15 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.pojo.view;
 
 import com.alibaba.nacossync.constant.ClusterTypeEnum;
-import java.io.Serializable;
-
+import com.alibaba.nacossync.pojo.model.ClusterDO;
 import lombok.Data;
 
+import java.io.Serializable;
+
 /**
  * @author NacosSync
  * @version $Id: ClusterModel.java, v 0.1 2018-09-25 下午11:09 NacosSync Exp $$
@@ -29,14 +31,17 @@ import lombok.Data;
 public class ClusterModel implements Serializable {
     
     private String clusterId;
+    
     /**
      * json format，["192.168.1:8080","192.168.2?key=1"]
      */
     private String connectKeyList;
+    
     /**
      * cluster name, eg：cluster of ShangHai（edas-sh）
      */
     private String clusterName;
+    
     /**
      * cluster type, eg cluster of CS,cluster of Nacos,
      *
@@ -45,5 +50,17 @@ public class ClusterModel implements Serializable {
     private String clusterType;
     
     private String namespace;
+    
     private String userName;
+    
+    public static ClusterModel from(ClusterDO clusterDO) {
+        ClusterModel clusterModel = new ClusterModel();
+        clusterModel.setClusterId(clusterDO.getClusterId());
+        clusterModel.setConnectKeyList(clusterDO.getConnectKeyList());
+        clusterModel.setClusterType(clusterDO.getClusterType());
+        clusterModel.setClusterName(clusterDO.getClusterName());
+        clusterModel.setNamespace(clusterDO.getNamespace());
+        clusterModel.setUserName(clusterDO.getUserName());
+        return clusterModel;
+    }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/pojo/view/TaskModel.java

@@ -14,8 +14,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.pojo.view;
 
+import com.alibaba.nacossync.pojo.model.TaskDO;
 import lombok.Data;
 
 /**
@@ -26,10 +28,25 @@ import lombok.Data;
 public class TaskModel {
     
     private String taskId;
+    
     private String sourceClusterId;
+    
     private String destClusterId;
+    
     private String serviceName;
+    
     private String groupName;
+    
     private String taskStatus;
     
+    public static TaskModel from(TaskDO taskDO) {
+        TaskModel taskModel = new TaskModel();
+        taskModel.setDestClusterId(taskDO.getDestClusterId());
+        taskModel.setGroupName(taskDO.getGroupName());
+        taskModel.setServiceName(taskDO.getServiceName());
+        taskModel.setSourceClusterId(taskDO.getSourceClusterId());
+        taskModel.setTaskStatus(taskDO.getTaskStatus());
+        taskModel.setTaskId(taskDO.getTaskId());
+        return taskModel;
+    }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/template/SkyWalkerTemplate.java

@@ -45,8 +45,7 @@ public class SkyWalkerTemplate {
     }
 
     private static <T extends BaseResult> void initExceptionResult(T result, Throwable e) {
-        if (e instanceof SkyWalkerException) {
-            SkyWalkerException skyWalkerException = (SkyWalkerException) e;
+        if (e instanceof SkyWalkerException skyWalkerException) {
             if (null != skyWalkerException.getResultCode()) {
                 result.setResultCode(skyWalkerException.getResultCode().getCode());
             }

nacossync-worker/src/main/java/com/alibaba/nacossync/template/processor/ClusterAddProcessor.java

@@ -14,12 +14,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.template.processor;
 
 import com.alibaba.nacossync.constant.ClusterTypeEnum;
 import com.alibaba.nacossync.dao.ClusterAccessService;
 import com.alibaba.nacossync.exception.SkyWalkerException;
-import com.alibaba.nacossync.monitor.MetricsManager;
 import com.alibaba.nacossync.pojo.model.ClusterDO;
 import com.alibaba.nacossync.pojo.request.ClusterAddRequest;
 import com.alibaba.nacossync.pojo.result.ClusterAddResult;
@@ -28,7 +28,6 @@ import com.alibaba.nacossync.util.SkyWalkerUtil;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 /**
@@ -39,18 +38,19 @@ import org.springframework.stereotype.Service;
 @Service
 public class ClusterAddProcessor implements Processor<ClusterAddRequest, ClusterAddResult> {
     
-    @Autowired
-    private MetricsManager metricsManager;
     
-    @Autowired
-    private ClusterAccessService clusterAccessService;
+    private final ClusterAccessService clusterAccessService;
     
-    @Autowired
-    private ObjectMapper objectMapper;
+    private final ObjectMapper objectMapper;
+    
+    public ClusterAddProcessor(ClusterAccessService clusterAccessService, ObjectMapper objectMapper) {
+        this.clusterAccessService = clusterAccessService;
+        this.objectMapper = objectMapper;
+    }
     
     @Override
-    public void process(ClusterAddRequest clusterAddRequest, ClusterAddResult clusterAddResult,
-        Object... others) throws Exception {
+    public void process(ClusterAddRequest clusterAddRequest, ClusterAddResult clusterAddResult, Object... others)
+            throws Exception {
         ClusterDO clusterDO = new ClusterDO();
         
         if (null == clusterAddRequest.getConnectKeyList() || clusterAddRequest.getConnectKeyList().isEmpty()) {
@@ -58,8 +58,8 @@ public class ClusterAddProcessor implements Processor<ClusterAddRequest, Cluster
             throw new SkyWalkerException("集群列表不能为空！");
         }
         
-        if (StringUtils.isBlank(clusterAddRequest.getClusterName()) || StringUtils
-            .isBlank(clusterAddRequest.getClusterType())) {
+        if (StringUtils.isBlank(clusterAddRequest.getClusterName()) || StringUtils.isBlank(
+                clusterAddRequest.getClusterType())) {
             
             throw new SkyWalkerException("集群名字或者类型不能为空！");
         }

nacossync-worker/src/main/java/com/alibaba/nacossync/template/processor/ClusterDeleteProcessor.java

@@ -14,15 +14,16 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.template.processor;
 
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-
 import com.alibaba.nacossync.dao.ClusterAccessService;
-import com.alibaba.nacossync.pojo.result.ClusterDeleteResult;
+import com.alibaba.nacossync.dao.TaskAccessService;
+import com.alibaba.nacossync.exception.SkyWalkerException;
 import com.alibaba.nacossync.pojo.request.ClusterDeleteRequest;
+import com.alibaba.nacossync.pojo.result.ClusterDeleteResult;
 import com.alibaba.nacossync.template.Processor;
+import org.springframework.stereotype.Service;
 
 /**
  * @author NacosSync
@@ -31,12 +32,23 @@ import com.alibaba.nacossync.template.Processor;
 @Service
 public class ClusterDeleteProcessor implements Processor<ClusterDeleteRequest, ClusterDeleteResult> {
     
-    @Autowired
-    private ClusterAccessService clusterAccessService;
+    private final ClusterAccessService clusterAccessService;
+    
+    private final TaskAccessService taskAccessService;
+    
+    public ClusterDeleteProcessor(ClusterAccessService clusterAccessService, TaskAccessService taskAccessService) {
+        this.clusterAccessService = clusterAccessService;
+        this.taskAccessService = taskAccessService;
+    }
     
     @Override
-    public void process(ClusterDeleteRequest clusterDeleteRequest,
-                        ClusterDeleteResult clusterDeleteResult, Object... others) throws Exception {
+    public void process(ClusterDeleteRequest clusterDeleteRequest, ClusterDeleteResult clusterDeleteResult,
+            Object... others) throws Exception {
+        int count = taskAccessService.countByDestClusterIdOrSourceClusterId(clusterDeleteRequest.getClusterId(),
+                clusterDeleteRequest.getClusterId());
+        if (count > 0) {
+            throw new SkyWalkerException(String.format("集群下有%d个任务，请先删除任务", count));
+        }
         
         clusterAccessService.deleteByClusterId(clusterDeleteRequest.getClusterId());
         

nacossync-worker/src/main/java/com/alibaba/nacossync/template/processor/ClusterDetailQueryProcessor.java

@@ -14,45 +14,37 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.template.processor;
 
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-
 import com.alibaba.nacossync.dao.ClusterAccessService;
-import com.alibaba.nacossync.pojo.result.ClusterDetailQueryResult;
 import com.alibaba.nacossync.pojo.model.ClusterDO;
 import com.alibaba.nacossync.pojo.request.ClusterDetailQueryRequest;
+import com.alibaba.nacossync.pojo.result.ClusterDetailQueryResult;
 import com.alibaba.nacossync.pojo.view.ClusterModel;
 import com.alibaba.nacossync.template.Processor;
+import org.springframework.stereotype.Service;
 
 /**
  * @author NacosSync
  * @version $Id: ClusterDetailQueryProcessor.java, v 0.1 2018-09-30 PM2:39 NacosSync Exp $$
  */
 @Service
-public class ClusterDetailQueryProcessor
-                                        implements
-                                        Processor<ClusterDetailQueryRequest, ClusterDetailQueryResult> {
-    @Autowired
-    private ClusterAccessService clusterAccessService;
+public class ClusterDetailQueryProcessor implements Processor<ClusterDetailQueryRequest, ClusterDetailQueryResult> {
+    
+    private final ClusterAccessService clusterAccessService;
+    
+    public ClusterDetailQueryProcessor(ClusterAccessService clusterAccessService) {
+        this.clusterAccessService = clusterAccessService;
+    }
     
     @Override
     public void process(ClusterDetailQueryRequest clusterDetailQueryRequest,
-                        ClusterDetailQueryResult clusterDetailQueryResult, Object... others)
-                                                                                            throws Exception {
+            ClusterDetailQueryResult clusterDetailQueryResult, Object... others) throws Exception {
         
-        ClusterDO clusterDO = clusterAccessService.findByClusterId(clusterDetailQueryRequest
-            .getClusterId());
+        ClusterDO clusterDO = clusterAccessService.findByClusterId(clusterDetailQueryRequest.getClusterId());
         
-        ClusterModel clusterModel = new ClusterModel();
-        clusterModel.setClusterId(clusterDO.getClusterId());
-        clusterModel.setConnectKeyList(clusterDO.getConnectKeyList());
-        clusterModel.setClusterType(clusterDO.getClusterType());
-        clusterModel.setClusterName(clusterDO.getClusterName());
-        clusterModel.setNamespace(clusterDO.getNamespace());
-        clusterModel.setUserName(clusterDO.getUserName());
-        clusterDetailQueryResult.setClusterModel(clusterModel);
+        clusterDetailQueryResult.setClusterModel(ClusterModel.from(clusterDO));
         
     }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/template/processor/ClusterListQueryProcessor.java

@@ -14,38 +14,39 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.template.processor;
 
-import java.util.ArrayList;
-import java.util.List;
-
+import com.alibaba.nacossync.dao.ClusterAccessService;
 import com.alibaba.nacossync.pojo.QueryCondition;
+import com.alibaba.nacossync.pojo.model.ClusterDO;
+import com.alibaba.nacossync.pojo.request.ClusterListQueryRequest;
+import com.alibaba.nacossync.pojo.result.ClusterListQueryResult;
+import com.alibaba.nacossync.pojo.view.ClusterModel;
+import com.alibaba.nacossync.template.Processor;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.stereotype.Service;
 
-import com.alibaba.nacossync.dao.ClusterAccessService;
-import com.alibaba.nacossync.pojo.result.ClusterListQueryResult;
-import com.alibaba.nacossync.pojo.model.ClusterDO;
-import com.alibaba.nacossync.pojo.request.ClusterListQueryRequest;
-import com.alibaba.nacossync.pojo.view.ClusterModel;
-import com.alibaba.nacossync.template.Processor;
+import java.util.List;
 
 /**
  * @author NacosSync
  * @version $Id: ClusterListQueryProcessor.java, v 0.1 2018-09-30 PM2:33 NacosSync Exp $$
  */
 @Service
-public class ClusterListQueryProcessor implements
-        Processor<ClusterListQueryRequest, ClusterListQueryResult> {
+public class ClusterListQueryProcessor implements Processor<ClusterListQueryRequest, ClusterListQueryResult> {
     
-    @Autowired
-    private ClusterAccessService clusterAccessService;
+    private final ClusterAccessService clusterAccessService;
+    
+    public ClusterListQueryProcessor(ClusterAccessService clusterAccessService) {
+        this.clusterAccessService = clusterAccessService;
+    }
     
     @Override
-    public void process(ClusterListQueryRequest clusterListQueryRequest,
-                        ClusterListQueryResult clusterListQueryResult, Object... others) {
+    public void process(ClusterListQueryRequest clusterListQueryRequest, ClusterListQueryResult clusterListQueryResult,
+            Object... others) {
         
         Page<ClusterDO> clusterDOS;
         
@@ -62,19 +63,7 @@ public class ClusterListQueryProcessor implements
                     clusterListQueryRequest.getPageSize());
             
         }
-
-        List<ClusterModel> clusterModels = new ArrayList<>();
-        clusterDOS.forEach(clusterDO -> {
-
-            ClusterModel clusterModel = new ClusterModel();
-            clusterModel.setClusterId(clusterDO.getClusterId());
-            clusterModel.setClusterName(clusterDO.getClusterName());
-            clusterModel.setClusterType(clusterDO.getClusterType());
-            clusterModel.setConnectKeyList(clusterDO.getConnectKeyList());
-            clusterModel.setNamespace(clusterDO.getNamespace());
-            clusterModels.add(clusterModel);
-        });
-
+        List<ClusterModel> clusterModels = clusterDOS.stream().map(ClusterModel::from).toList();
         clusterListQueryResult.setClusterModels(clusterModels);
         clusterListQueryResult.setTotalPage(clusterDOS.getTotalPages());
         clusterListQueryResult.setCurrentSize(clusterModels.size());

nacossync-worker/src/main/java/com/alibaba/nacossync/template/processor/TaskDeleteInBatchProcessor.java

@@ -16,19 +16,12 @@
  */
 package com.alibaba.nacossync.template.processor;
 
-import java.util.ArrayList;
-import java.util.List;
-
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-
 import com.alibaba.nacossync.dao.TaskAccessService;
-import com.alibaba.nacossync.pojo.model.TaskDO;
 import com.alibaba.nacossync.pojo.request.TaskDeleteInBatchRequest;
 import com.alibaba.nacossync.pojo.result.BaseResult;
 import com.alibaba.nacossync.template.Processor;
-
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
 
 
 /**
@@ -40,20 +33,15 @@ import lombok.extern.slf4j.Slf4j;
 @Service
 public class TaskDeleteInBatchProcessor implements Processor<TaskDeleteInBatchRequest, BaseResult> {
 
-    @Autowired
-    private TaskAccessService taskAccessService;
+    private final TaskAccessService taskAccessService;
+    
+    public TaskDeleteInBatchProcessor(TaskAccessService taskAccessService) {
+        this.taskAccessService = taskAccessService;
+    }
     
     @Override
     public void process(TaskDeleteInBatchRequest taskBatchDeleteRequest, BaseResult baseResult,
                         Object... others) {
-//    	
-//    	String[] taskIds= taskBatchDeleteRequest.getTaskIds();
-//    	List<TaskDO> taskDOs = new ArrayList<TaskDO>();
-//    	for (String taskId : taskIds) {
-//    		TaskDO taskDO = new TaskDO();
-//    		taskDO.setTaskId(taskId);
-//    		taskDOs.add(taskDO);
-//		}
         taskAccessService.deleteTaskInBatch(taskBatchDeleteRequest.getTaskIds());
     }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/template/processor/TaskDetailProcessor.java

@@ -14,17 +14,17 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.template.processor;
 
 import com.alibaba.nacossync.dao.TaskAccessService;
 import com.alibaba.nacossync.exception.SkyWalkerException;
-import com.alibaba.nacossync.pojo.result.TaskDetailQueryResult;
 import com.alibaba.nacossync.pojo.model.TaskDO;
 import com.alibaba.nacossync.pojo.request.TaskDetailQueryRequest;
+import com.alibaba.nacossync.pojo.result.TaskDetailQueryResult;
 import com.alibaba.nacossync.pojo.view.TaskModel;
 import com.alibaba.nacossync.template.Processor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 /**
@@ -35,12 +35,15 @@ import org.springframework.stereotype.Service;
 @Service
 public class TaskDetailProcessor implements Processor<TaskDetailQueryRequest, TaskDetailQueryResult> {
     
-    @Autowired
-    private TaskAccessService taskAccessService;
+    private final TaskAccessService taskAccessService;
+    
+    public TaskDetailProcessor(TaskAccessService taskAccessService) {
+        this.taskAccessService = taskAccessService;
+    }
     
     @Override
-    public void process(TaskDetailQueryRequest taskDetailQueryRequest, TaskDetailQueryResult taskDetailQueryResult, Object... others)
-            throws Exception {
+    public void process(TaskDetailQueryRequest taskDetailQueryRequest, TaskDetailQueryResult taskDetailQueryResult,
+            Object... others) throws Exception {
         
         TaskDO taskDO = taskAccessService.findByTaskId(taskDetailQueryRequest.getTaskId());
         
@@ -48,15 +51,6 @@ public class TaskDetailProcessor implements Processor<TaskDetailQueryRequest, Ta
             throw new SkyWalkerException("taskDo is null,taskId :" + taskDetailQueryRequest.getTaskId());
         }
         
-        TaskModel taskModel = new TaskModel();
-
-        taskModel.setDestClusterId(taskDO.getDestClusterId());
-        taskModel.setGroupName(taskDO.getGroupName());
-        taskModel.setServiceName(taskDO.getServiceName());
-        taskModel.setSourceClusterId(taskDO.getSourceClusterId());
-        taskModel.setTaskStatus(taskDO.getTaskStatus());
-        taskModel.setTaskId(taskDO.getTaskId());
-
-        taskDetailQueryResult.setTaskModel(taskModel);
+        taskDetailQueryResult.setTaskModel(TaskModel.from(taskDO));
     }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/template/processor/TaskListQueryProcessor.java

@@ -14,25 +14,23 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.template.processor;
 
-import java.util.ArrayList;
-import java.util.List;
-
+import com.alibaba.nacossync.dao.TaskAccessService;
 import com.alibaba.nacossync.pojo.QueryCondition;
 import com.alibaba.nacossync.pojo.model.TaskDO;
+import com.alibaba.nacossync.pojo.request.TaskListQueryRequest;
+import com.alibaba.nacossync.pojo.result.TaskListQueryResult;
+import com.alibaba.nacossync.pojo.view.TaskModel;
+import com.alibaba.nacossync.template.Processor;
 import lombok.extern.slf4j.Slf4j;
-
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.stereotype.Service;
 
-import com.alibaba.nacossync.dao.TaskAccessService;
-import com.alibaba.nacossync.pojo.result.TaskListQueryResult;
-import com.alibaba.nacossync.pojo.request.TaskListQueryRequest;
-import com.alibaba.nacossync.pojo.view.TaskModel;
-import com.alibaba.nacossync.template.Processor;
+import java.util.List;
 
 /**
  * @author NacosSync
@@ -42,12 +40,15 @@ import com.alibaba.nacossync.template.Processor;
 @Slf4j
 public class TaskListQueryProcessor implements Processor<TaskListQueryRequest, TaskListQueryResult> {
     
-    @Autowired
-    private TaskAccessService taskAccessService;
+    private final TaskAccessService taskAccessService;
+    
+    public TaskListQueryProcessor(TaskAccessService taskAccessService) {
+        this.taskAccessService = taskAccessService;
+    }
     
     @Override
-    public void process(TaskListQueryRequest taskListQueryRequest,
-                        TaskListQueryResult taskListQueryResult, Object... others) {
+    public void process(TaskListQueryRequest taskListQueryRequest, TaskListQueryResult taskListQueryResult,
+            Object... others) {
         
         Page<TaskDO> taskDOPage;
         
@@ -64,18 +65,7 @@ public class TaskListQueryProcessor implements Processor<TaskListQueryRequest, T
             
         }
         
-        List<TaskModel> taskList = new ArrayList<>();
-
-        taskDOPage.forEach(taskDO -> {
-            TaskModel taskModel = new TaskModel();
-            taskModel.setTaskId(taskDO.getTaskId());
-            taskModel.setDestClusterId(taskDO.getDestClusterId());
-            taskModel.setSourceClusterId(taskDO.getSourceClusterId());
-            taskModel.setServiceName(taskDO.getServiceName());
-            taskModel.setGroupName(taskDO.getGroupName());
-            taskModel.setTaskStatus(taskDO.getTaskStatus());
-            taskList.add(taskModel);
-        });
+        List<TaskModel> taskList = taskDOPage.stream().map(TaskModel::from).toList();
         
         taskListQueryResult.setTaskModels(taskList);
         taskListQueryResult.setTotalPage(taskDOPage.getTotalPages());

nacossync-worker/src/main/java/com/alibaba/nacossync/template/processor/TaskUpdateProcessor.java

@@ -14,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.template.processor;
 
 import com.alibaba.nacossync.constant.TaskStatusEnum;
@@ -25,7 +26,6 @@ import com.alibaba.nacossync.pojo.result.BaseResult;
 import com.alibaba.nacossync.template.Processor;
 import com.alibaba.nacossync.util.SkyWalkerUtil;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 /**
@@ -35,29 +35,29 @@ import org.springframework.stereotype.Service;
 @Slf4j
 @Service
 public class TaskUpdateProcessor implements Processor<TaskUpdateRequest, BaseResult> {
-    @Autowired
-    private TaskAccessService taskAccessService;
+    
+    private final TaskAccessService taskAccessService;
+    
+    public TaskUpdateProcessor(TaskAccessService taskAccessService) {
+        this.taskAccessService = taskAccessService;
+    }
     
     @Override
-    public void process(TaskUpdateRequest taskUpdateRequest, BaseResult baseResult,
-                        Object... others) throws Exception {
+    public void process(TaskUpdateRequest taskUpdateRequest, BaseResult baseResult, Object... others) throws Exception {
         
         TaskDO taskDO = taskAccessService.findByTaskId(taskUpdateRequest.getTaskId());
         
         if (!TaskStatusEnum.contains(taskUpdateRequest.getTaskStatus())) {
             throw new SkyWalkerException(
-                    "taskUpdateRequest.getTaskStatus() is not exist , value is :"
-                            + taskUpdateRequest.getTaskStatus());
+                    "taskUpdateRequest.getTaskStatus() is not exist , value is :" + taskUpdateRequest.getTaskStatus());
         }
         
         if (null == taskDO) {
-            throw new SkyWalkerException("taskDo is null ,taskId is :"
-                    + taskUpdateRequest.getTaskId());
+            throw new SkyWalkerException("taskDo is null ,taskId is :" + taskUpdateRequest.getTaskId());
         }
         
         taskDO.setTaskStatus(taskUpdateRequest.getTaskStatus());
         
-        
         taskDO.setOperationId(SkyWalkerUtil.generateOperationId());
         
         taskAccessService.addTask(taskDO);

nacossync-worker/src/main/java/com/alibaba/nacossync/timer/CheckRunningStatusAllNacosThread.java

@@ -120,7 +120,7 @@ public class CheckRunningStatusAllNacosThread implements Runnable {
         // Build the list of sub-tasks pending removal
         List<TaskDO> servicesPendingRemoval = serviceNameSet.stream()
                 .map(serviceName -> buildSubTaskDO(task, serviceName))
-                .collect(Collectors.toUnmodifiableList());
+                .toList();
         
         // Handle the removal of the pending sub-tasks
         handleRemoval(servicesPendingRemoval, serviceNameSet);
@@ -154,13 +154,13 @@ public class CheckRunningStatusAllNacosThread implements Runnable {
         List<TaskDO> servicesPendingInsertion = serviceNameList.stream()
                 .filter(serviceName -> !serviceSet.contains(serviceName))
                 .map(serviceName -> buildSubTaskDO(task, serviceName))
-                .collect(Collectors.toUnmodifiableList());
+                .toList();
         
         // Determine the services that need to be removed (those in the current service set but not in the service name list)
         List<TaskDO> servicesPendingRemoval = serviceSet.stream()
                 .filter(serviceName -> !serviceNameList.contains(serviceName))
                 .map(serviceName -> buildSubTaskDO(task, serviceName))
-                .collect(Collectors.toUnmodifiableList());
+                .toList();
         
         
         // If all lists are empty, there is nothing to process

nacossync-worker/src/main/java/com/alibaba/nacossync/timer/CleanExceedOperationIdTimer.java

@@ -14,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.alibaba.nacossync.timer;
 
 import com.alibaba.nacossync.cache.SkyWalkerCacheServices;
@@ -21,15 +22,15 @@ import com.alibaba.nacossync.dao.TaskAccessService;
 import com.alibaba.nacossync.pojo.FinishedTask;
 import com.alibaba.nacossync.pojo.model.TaskDO;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.stereotype.Service;
 
-import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
 
 /**
  * @author NacosSync
@@ -39,20 +40,29 @@ import java.util.concurrent.TimeUnit;
 @Service
 public class CleanExceedOperationIdTimer implements CommandLineRunner {
     
-    @Autowired
-    private SkyWalkerCacheServices   skyWalkerCacheServices;
+    private static final long INITIAL_DELAY = 0;
     
-    @Autowired
-    private TaskAccessService        taskAccessService;
+    private static final long PERIOD = 12;
     
-    @Autowired
-    private ScheduledExecutorService scheduledExecutorService;
+    private final SkyWalkerCacheServices skyWalkerCacheServices;
+    
+    private final TaskAccessService taskAccessService;
+    
+    private final ScheduledExecutorService scheduledExecutorService;
+    
+    public CleanExceedOperationIdTimer(SkyWalkerCacheServices skyWalkerCacheServices,
+            TaskAccessService taskAccessService, ScheduledExecutorService scheduledExecutorService) {
+        this.skyWalkerCacheServices = skyWalkerCacheServices;
+        this.taskAccessService = taskAccessService;
+        this.scheduledExecutorService = scheduledExecutorService;
+    }
     
     @Override
     public void run(String... args) {
         /** Clean up the OperationId cache once every 12 hours */
-        scheduledExecutorService.scheduleWithFixedDelay(new CleanExceedOperationIdThread(), 0, 12,
+        scheduledExecutorService.scheduleWithFixedDelay(new CleanExceedOperationIdThread(), INITIAL_DELAY, PERIOD,
                 TimeUnit.HOURS);
+        log.info("CleanExceedOperationIdTimer has started successfully");
         
     }
     
@@ -63,19 +73,9 @@ public class CleanExceedOperationIdTimer implements CommandLineRunner {
             
             try {
                 
-                Map<String, FinishedTask> finishedTaskMap = skyWalkerCacheServices
-                    .getFinishedTaskMap();
-
-                Iterable<TaskDO> taskDOS = taskAccessService.findAll();
-
-                Set<String> operationIds = getDbOperations(taskDOS);
-                for (String operationId : finishedTaskMap.keySet()) {
-
-                    if (!operationIds.contains(operationId)) {
-
-                        finishedTaskMap.remove(operationId);
-                    }
-                }
+                Map<String, FinishedTask> finishedTaskMap = skyWalkerCacheServices.getFinishedTaskMap();
+                Set<String> operationIds = getDbOperations(taskAccessService.findAll());
+                finishedTaskMap.keySet().removeIf(operationId -> !operationIds.contains(operationId));
                 
             } catch (Exception e) {
                 log.warn("CleanExceedOperationIdThread Exception", e);
@@ -84,9 +84,8 @@ public class CleanExceedOperationIdTimer implements CommandLineRunner {
         }
         
         private Set<String> getDbOperations(Iterable<TaskDO> taskDOS) {
-            Set<String> operationIds = new HashSet<>();
-            taskDOS.forEach(taskDO -> operationIds.add(taskDO.getOperationId()));
-            return operationIds;
+            return StreamSupport.stream(taskDOS.spliterator(), false).map(TaskDO::getOperationId)
+                    .collect(Collectors.toSet());
         }
     }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/timer/QuerySyncTaskTimer.java

@@ -27,7 +27,6 @@ import com.alibaba.nacossync.monitor.MetricsManager;
 import com.alibaba.nacossync.pojo.model.TaskDO;
 import com.google.common.eventbus.EventBus;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.stereotype.Service;
 
@@ -42,33 +41,44 @@ import java.util.concurrent.TimeUnit;
 @Slf4j
 @Service
 public class QuerySyncTaskTimer implements CommandLineRunner {
-    @Autowired
-    private MetricsManager metricsManager;
     
-    @Autowired
-    private SkyWalkerCacheServices skyWalkerCacheServices;
+    private static final int INITIAL_DELAY = 0;
     
-    @Autowired
-    private TaskAccessService taskAccessService;
+    private static final int DELAY = 3000;
     
-    @Autowired
-    private EventBus eventBus;
+    private final MetricsManager metricsManager;
 
-    @Autowired
-    private ScheduledExecutorService scheduledExecutorService;
+    private final SkyWalkerCacheServices skyWalkerCacheServices;
 
-    @Autowired
-    private NacosServerHolder nacosServerHolder;
+    private final TaskAccessService taskAccessService;
+
+    private final EventBus eventBus;
+
+    private final ScheduledExecutorService scheduledExecutorService;
+    
+    private final NacosServerHolder nacosServerHolder;
+    
+    public QuerySyncTaskTimer(MetricsManager metricsManager, SkyWalkerCacheServices skyWalkerCacheServices,
+            TaskAccessService taskAccessService, EventBus eventBus, ScheduledExecutorService scheduledExecutorService,
+            NacosServerHolder nacosServerHolder) {
+        this.metricsManager = metricsManager;
+        this.skyWalkerCacheServices = skyWalkerCacheServices;
+        this.taskAccessService = taskAccessService;
+        this.eventBus = eventBus;
+        this.scheduledExecutorService = scheduledExecutorService;
+        this.nacosServerHolder = nacosServerHolder;
+    }
     
     @Override
     public void run(String... args) {
         /** Fetch the task list from the database every 3 seconds */
-        scheduledExecutorService.scheduleWithFixedDelay(new CheckRunningStatusThread(), 0, 3000,
+        scheduledExecutorService.scheduleWithFixedDelay(new CheckRunningStatusThread(), INITIAL_DELAY, DELAY,
                 TimeUnit.MILLISECONDS);
         
         scheduledExecutorService.scheduleWithFixedDelay(new CheckRunningStatusAllNacosThread(metricsManager,
-                taskAccessService, nacosServerHolder, eventBus), 0, 3000,
+                taskAccessService, nacosServerHolder, eventBus), INITIAL_DELAY, DELAY,
                 TimeUnit.MILLISECONDS);
+        log.info("QuerySyncTaskTimer has started successfully");
     }
 
     private class CheckRunningStatusThread implements Runnable {
@@ -76,7 +86,7 @@ public class QuerySyncTaskTimer implements CommandLineRunner {
         @Override
         public void run() {
 
-            Long start = System.currentTimeMillis();
+            long start = System.currentTimeMillis();
             try {
 
                 List<TaskDO> taskDOS = taskAccessService.findAllByServiceNameNotEqualAll();
@@ -91,13 +101,13 @@ public class QuerySyncTaskTimer implements CommandLineRunner {
                     if (TaskStatusEnum.SYNC.getCode().equals(taskDO.getTaskStatus())) {
 
                         eventBus.post(new SyncTaskEvent(taskDO));
-                        log.info("从数据库中查询到一个同步任务，发出一个同步事件:" + taskDO);
+                        log.info("从数据库中查询到一个同步任务，发出一个同步事件:{}", taskDO);
                     }
 
                     if (TaskStatusEnum.DELETE.getCode().equals(taskDO.getTaskStatus())) {
 
                         eventBus.post(new DeleteTaskEvent(taskDO));
-                        log.info("从数据库中查询到一个删除任务，发出一个同步事件:" + taskDO);
+                        log.info("从数据库中查询到一个删除任务，发出一个同步事件:{}", taskDO);
                     }
                 });
 

nacossync-worker/src/main/java/com/alibaba/nacossync/timer/SpecialSyncEventTimer.java

@@ -17,7 +17,6 @@ import com.alibaba.nacossync.extension.event.SpecialSyncEvent;
 import com.alibaba.nacossync.extension.event.SpecialSyncEventBus;
 import com.google.common.eventbus.EventBus;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.stereotype.Service;
 
@@ -33,20 +32,25 @@ import java.util.concurrent.TimeUnit;
 @Service
 public class SpecialSyncEventTimer implements CommandLineRunner {
 
-    @Autowired
-    private SpecialSyncEventBus specialSyncEventBus;
+    private final SpecialSyncEventBus specialSyncEventBus;
 
-    @Autowired
-    private EventBus eventBus;
+    private final EventBus eventBus;
 
-    @Autowired
-    private ScheduledExecutorService scheduledExecutorService;
+    private final ScheduledExecutorService scheduledExecutorService;
+    
+    public SpecialSyncEventTimer(SpecialSyncEventBus specialSyncEventBus, EventBus eventBus,
+            ScheduledExecutorService scheduledExecutorService) {
+        this.specialSyncEventBus = specialSyncEventBus;
+        this.eventBus = eventBus;
+        this.scheduledExecutorService = scheduledExecutorService;
+    }
     
     @Override
     public void run(String... args) throws Exception {
 
         scheduledExecutorService.scheduleWithFixedDelay(new SpecialSyncEventTimer.SpecialSyncEventThread(), 0, 3000,
                 TimeUnit.MILLISECONDS);
+        log.info("SpecialSyncEventTimer has started successfully");
     }
 
     private class SpecialSyncEventThread implements Runnable {
@@ -58,9 +62,9 @@ public class SpecialSyncEventTimer implements CommandLineRunner {
                 allSpecialSyncEvent.stream()
                         .filter(specialSyncEvent -> TaskStatusEnum.SYNC.getCode()
                                 .equals(specialSyncEvent.getTaskDO().getTaskStatus()))
-                        .forEach(specialSyncEvent -> eventBus.post(specialSyncEvent));
+                        .forEach(eventBus::post);
             } catch (Exception e) {
-                log.warn("SpecialSyncEventThread Exception", e);
+               log.error("Exception occurred while processing special sync events", e);
 
             }
         }

nacossync-worker/src/main/java/com/alibaba/nacossync/util/BatchTaskExecutor.java

@@ -8,11 +8,9 @@ import lombok.extern.slf4j.Slf4j;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.TimeUnit;
+import java.util.concurrent.*;
 import java.util.function.Consumer;
+
 @Slf4j
 public class BatchTaskExecutor {
     
@@ -20,39 +18,49 @@ public class BatchTaskExecutor {
     private static final ExecutorService executorService = Executors.newFixedThreadPool(MAX_THREAD_NUM);
     
     /**
-     * 批量操作方法
+     * Batch operation method
      *
-     * @param items     任务列表
-     * @param operation 要执行的操作
+     * @param items     Task list
+     * @param operation Operation to be executed
      */
     public static void batchOperation(List<TaskDO> items, Consumer<TaskDO> operation) {
         Stopwatch stopwatch = Stopwatch.createStarted();
         
         List<Tuple<Integer, List<TaskDO>>> taskGroupList = averageAssign(items, MAX_THREAD_NUM);
         
-        // 创建一个包含所有任务的 CompletableFuture
+        // Create a CompletableFuture for each task group
         CompletableFuture<?>[] futures = taskGroupList.stream().map(tuple -> CompletableFuture.runAsync(() -> {
             for (TaskDO taskDO : tuple.getT2()) {
-                operation.accept(taskDO);
+                try {
+                    // Add timeout control for each task to avoid long-running tasks
+                    CompletableFuture.runAsync(() -> operation.accept(taskDO), executorService)
+                            .orTimeout(5, TimeUnit.SECONDS) // Task timeout set to 5 seconds
+                            .exceptionally(ex -> {
+                                log.error("Task execution timed out: {}", taskDO.getServiceName(), ex);
+                                return null;
+                            }).join();
+                } catch (Exception e) {
+                    log.error("Error occurred during task execution: {}", taskDO.getServiceName(), e);
+                }
             }
         }, executorService)).toArray(CompletableFuture[]::new);
         
         try {
-            // 等待所有任务完成
+            // Wait for all tasks to complete
             CompletableFuture.allOf(futures).join();
         } catch (Exception e) {
             log.error("Error occurred during sync operation", e);
+        } finally {
+            log.info("Total sync tasks: {}, Execution time: {} ms", items.size(), stopwatch.elapsed(TimeUnit.MILLISECONDS));
         }
-
-        log.debug("Total sync tasks: {}, Execution time: {} ms", items.size(), stopwatch.elapsed(TimeUnit.MILLISECONDS));
     }
     
     /**
-     * 将一个List均分成n个list, 主要通过偏移量来实现的
-     *
-     * @param source 源集合
-     * @param limit  最大值
-     * @return 均分后的列表
+     * Divide a list into n sublists, mainly implemented by offset
+     * @param source collection to be divided
+     * @param limit  maximum value
+     * @return list after division
+     * @param <T> object type
      */
     private static <T> List<Tuple<Integer, List<T>>> averageAssign(List<T> source, int limit) {
         if (CollectionUtils.isEmpty(source)) {
@@ -60,7 +68,7 @@ public class BatchTaskExecutor {
         }
         
         int size = source.size();
-        int listCount = (int) Math.ceil((double) size / limit);  // Calculate the number of sublist
+        int listCount = (int) Math.ceil((double) size / limit);  // Calculate the number of sublists
         int remainder = size % listCount;  // Calculate the number of remaining elements after even distribution
         List<Tuple<Integer, List<T>>> result = new ArrayList<>(listCount);  // Initialize the result list with the expected size
         
@@ -73,4 +81,24 @@ public class BatchTaskExecutor {
         
         return result;
     }
+    
+    /**
+     * Shutdown the executor service to avoid resource leakage
+     */
+    public static void shutdown() {
+        executorService.shutdown();
+        try {
+            if (!executorService.awaitTermination(60, TimeUnit.SECONDS)) {
+                executorService.shutdownNow();
+                if (!executorService.awaitTermination(60, TimeUnit.SECONDS)) {
+                    log.error("Executor service did not terminate");
                 }
+            }
+        } catch (InterruptedException ie) {
+            executorService.shutdownNow();
+            Thread.currentThread().interrupt();
+        }
+    }
+}
+
+

nacossync-worker/src/main/java/com/alibaba/nacossync/util/ConsulUtils.java

@@ -1,15 +1,3 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE
- * file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file
- * to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
- * License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
- * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations under the License.
- */
 package com.alibaba.nacossync.util;
 
 import com.alibaba.nacos.client.naming.utils.CollectionUtils;
@@ -20,16 +8,21 @@ import java.util.Map;
 import java.util.stream.Collectors;
 
 /**
- * @author paderlol
- * @date: 2019-04-25 00:01
+ * Utility class for handling Consul metadata.
  */
 public class ConsulUtils {
     public static Map<String, String> transferMetadata(List<String> tags) {
-        Map<String, String> metadata = new HashMap<>();
-        if (!CollectionUtils.isEmpty(tags)) {
-            return tags.stream().filter(tag -> tag.split("=", -1).length == 2).map(tag -> tag.split("=", -1))
-                .collect(Collectors.toMap(tagSplitArray -> tagSplitArray[0], tagSplitArray -> tagSplitArray[1]));
+        if (CollectionUtils.isEmpty(tags)) {
+            return new HashMap<>();
         }
-        return metadata;
+        
+        return tags.stream()
+                .map(tag -> tag.split("=", -1))
+                .filter(tagArray -> tagArray.length == 2)
+                .collect(Collectors.toMap(
+                        tagArray -> tagArray[0],
+                        tagArray -> tagArray[1],
+                        (existing, replacement) -> existing // In case of duplicate keys, keep the existing value
+                ));
     }
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/util/DubboConstants.java

@@ -20,7 +20,6 @@ import org.apache.commons.lang3.StringUtils;
 import java.math.BigDecimal;
 import java.util.List;
 import java.util.Map;
-import java.util.function.Predicate;
 
 /**
  * @author paderlol
@@ -51,43 +50,49 @@ public final class DubboConstants {
     public static final String ALL_SERVICE_NAME_PATTERN = "*";
     
     /**
+     * Creates a service name based on Dubbo version compatibility.
      * if Dubbo version greater than 2.7.2, service name is providers:interface:version:
      * if Dubbo version less than 2.7.2, service name is providers:interface:version
-     * @param queryParam
-     * @return
+     *
+     * @param queryParam the query parameters that include keys such as interface, version, group, etc.
+     * @return the constructed service name string
      */
     public static String createServiceName(Map<String, String> queryParam) {
-
         String group = queryParam.get(GROUP_KEY);
         String release = queryParam.get(RELEASE_KEY);
-        Predicate<String> isBlankGroup = StringUtils::isBlank;
-        Predicate<String> isNotBlankRelease = StringUtils::isNotBlank;
-        String serviceName = Joiner.on(SEPARATOR_KEY).skipNulls().join(CATALOG_KEY, queryParam.get(INTERFACE_KEY),
+        
+        String baseServiceName = Joiner.on(SEPARATOR_KEY).skipNulls().join(CATALOG_KEY, queryParam.get(INTERFACE_KEY),
                 queryParam.get(VERSION_KEY), group);
         
-        //TODO The code here is to deal with service metadata format problems caused by dubbo version incompatibility
-        if (isBlankGroup.test(group) && isNotBlankRelease.test(release)) {
+        if (StringUtils.isBlank(group) && StringUtils.isNotBlank(release)) {
             List<String> versions = Splitter.on(RELEASE_SEPARATOR_KEY).splitToList(release);
             if (!CollectionUtils.isEmpty(versions) && versions.size() >= DUBBO_VERSION_INDEX) {
                 String firstVersion = versions.get(0);
                 String secondVersion = versions.get(1);
-                if (DUBBO_VERSION_INDEX == Integer.parseInt(firstVersion)) {
-                    if (MIDDLE_DUBBO_VERSION_INDEX <= versions.size()) {
-                        String thirdVersion = versions.get(2);
-                        BigDecimal bigDecimal =
-                            new BigDecimal(Joiner.on(RELEASE_SEPARATOR_KEY).join(secondVersion, thirdVersion));
-                        if (bigDecimal.compareTo(COMPARE_NUMBER) > 0) {
-                            serviceName = serviceName.concat(SEPARATOR_KEY);
-                        }
-                    } else if (versions.size() == DUBBO_VERSION_INDEX && Integer.parseInt(secondVersion) > 7) {
-                        serviceName = serviceName.concat(SEPARATOR_KEY);
-                    }
-                } else if (MIN_DUBBO_VERSION < Integer.parseInt(firstVersion)) {
-                    serviceName = serviceName.concat(SEPARATOR_KEY);
+                BigDecimal bigDecimal = new BigDecimal(Joiner.on(RELEASE_SEPARATOR_KEY).join(secondVersion,
+                        versions.size() > 2 ? versions.get(2) : "0"));
+                if (isVersionRequiresSeparator(firstVersion, secondVersion, bigDecimal)) {
+                    baseServiceName = baseServiceName.concat(SEPARATOR_KEY);
                 }
             }
         }
-        return serviceName;
+        return baseServiceName;
+    }
+    
+    /**
+     * Checks if the version requires a separator to be appended to the service name.
+     *
+     * @param firstVersion  the major version
+     * @param secondVersion the minor version
+     * @param bigDecimal    the version number as BigDecimal
+     * @return true if separator should be added, otherwise false
+     */
+    private static boolean isVersionRequiresSeparator(String firstVersion, String secondVersion, BigDecimal bigDecimal) {
+        int majorVersion = Integer.parseInt(firstVersion);
+        int minorVersion = Integer.parseInt(secondVersion);
+        
+        return (DUBBO_VERSION_INDEX == majorVersion && (MIDDLE_DUBBO_VERSION_INDEX <= minorVersion ||
+                bigDecimal.compareTo(COMPARE_NUMBER) > 0)) || (MIN_DUBBO_VERSION < majorVersion);
     }
 
 }

nacossync-worker/src/main/java/com/alibaba/nacossync/util/SkyWalkerUtil.java

@@ -1,19 +1,3 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
 package com.alibaba.nacossync.util;
 
 import com.alibaba.nacossync.constant.ClusterTypeEnum;
@@ -22,135 +6,139 @@ import com.alibaba.nacossync.pojo.model.TaskDO;
 import com.alibaba.nacossync.pojo.request.ClusterAddRequest;
 import com.alibaba.nacossync.pojo.request.TaskAddRequest;
 import com.google.common.base.Joiner;
+import org.apache.commons.lang3.StringUtils;
 
-import java.io.UnsupportedEncodingException;
 import java.net.Inet4Address;
 import java.net.InetAddress;
 import java.net.NetworkInterface;
+import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Enumeration;
 import java.util.UUID;
 
 /**
-* @author NacosSync
-* @version $Id: SkyWalkerUtil.java, v 0.1 2018-09-26 AM12:10 NacosSync Exp $$
+ * Utility class for various operations in SkyWalker.
  */
 public class SkyWalkerUtil {
     
+    private static final String SEPARATOR = ":";
+    private static final String MD5_ALGORITHM = "MD5";
+    
     /**
+     * Generates an MD5 hash for the given string.
      *
-     * Gets the string md5
-     * @param value
-     * @return
+     * @param value The string to be encrypted.
+     * @return The encrypted string, or an empty string if encryption fails.
      */
-    public static String StringToMd5(String value) {
-        {
-            try {
-                MessageDigest md5 = MessageDigest.getInstance("MD5");
-                md5.update(value.getBytes("UTF-8"));
-                byte[] encryption = md5.digest();
-                StringBuffer strBuf = new StringBuffer();
-                for (int i = 0; i < encryption.length; i++) {
-                    if (Integer.toHexString(0xff & encryption[i]).length() == 1) {
-                        strBuf.append("0").append(Integer.toHexString(0xff & encryption[i]));
-                    } else {
-                        strBuf.append(Integer.toHexString(0xff & encryption[i]));
+    public static String stringToMd5(String value) {
+        if (StringUtils.isBlank(value)) {
+            return "";
         }
+        try {
+            MessageDigest md5 = MessageDigest.getInstance(MD5_ALGORITHM);
+            byte[] encryption = md5.digest(value.getBytes(StandardCharsets.UTF_8));
+            StringBuilder strBuf = new StringBuilder();
+            for (byte b : encryption) {
+                strBuf.append(String.format("%02x", b));
             }
             return strBuf.toString();
         } catch (NoSuchAlgorithmException e) {
             return "";
-            } catch (UnsupportedEncodingException e) {
-                return "";
-            }
         }
     }
     
     /**
-     * The rules of generating taskId
-     * @param addTaskRequest
-     * @return
+     * Generates a task ID based on the given TaskAddRequest.
+     *
+     * @param addTaskRequest The TaskAddRequest containing task details.
+     * @return The generated task ID.
      */
     public static String generateTaskId(TaskAddRequest addTaskRequest) {
-
         return generateTaskId(addTaskRequest.getServiceName(), addTaskRequest.getGroupName(),
                 addTaskRequest.getSourceClusterId(), addTaskRequest.getDestClusterId());
     }
     
     /**
-     * The rules of generating taskId
+     * Generates a task ID based on the given parameters.
      *
-     * @return
+     * @param serviceName     The service name.
+     * @param groupName       The group name.
+     * @param sourceClusterId The source cluster ID.
+     * @param destClusterId   The destination cluster ID.
+     * @return The generated task ID.
      */
     public static String generateTaskId(String serviceName, String groupName,
             String sourceClusterId, String destClusterId) {
-
-        StringBuilder sb = new StringBuilder();
-
-        sb.append(serviceName);
-        sb.append(SkyWalkerConstants.UNDERLINE);
-        sb.append(groupName);
-        sb.append(SkyWalkerConstants.UNDERLINE);
-        sb.append(sourceClusterId);
-        sb.append(SkyWalkerConstants.UNDERLINE);
-        sb.append(destClusterId);
-        return SkyWalkerUtil.StringToMd5(sb.toString());
+        String rawId = String.join(SkyWalkerConstants.UNDERLINE, serviceName, groupName, sourceClusterId, destClusterId);
+        return stringToMd5(rawId);
     }
     
     /**
-     * 生成集群clusterId的规则
+     * Generates a cluster ID based on the given ClusterAddRequest.
      *
-     * @param addClusterRequest
-     * @return
+     * @param addClusterRequest The ClusterAddRequest containing cluster details.
+     * @return The generated cluster ID.
      */
     public static String generateClusterId(ClusterAddRequest addClusterRequest) {
-
-        StringBuilder sb = new StringBuilder();
-        sb.append(addClusterRequest.getClusterName());
-        sb.append(SkyWalkerConstants.UNDERLINE);
-        sb.append(addClusterRequest.getClusterType());
-
-        return SkyWalkerUtil.StringToMd5(sb.toString());
+        String rawId = String.join(SkyWalkerConstants.UNDERLINE, addClusterRequest.getClusterName(), addClusterRequest.getClusterType());
+        return stringToMd5(rawId);
     }
     
     /**
-     * Avoid getting a return address
-     * @return
-     * @throws Exception
+     * Gets the local IP address, avoiding loopback addresses.
+     *
+     * @return The local IP address.
+     * @throws Exception If an error occurs while fetching the IP address.
      */
     public static String getLocalIp() throws Exception {
-
         InetAddress addr = InetAddress.getLocalHost();
-        String localIp = addr.getHostAddress();
-        if (addr.isLoopbackAddress()) {
+        if (!addr.isLoopbackAddress()) {
+            return addr.getHostAddress();
+        }
         Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
         while (interfaces.hasMoreElements()) {
-                NetworkInterface in = interfaces.nextElement();
-                Enumeration<InetAddress> addrs = in.getInetAddresses();
+            NetworkInterface networkInterface = interfaces.nextElement();
+            Enumeration<InetAddress> addrs = networkInterface.getInetAddresses();
             while (addrs.hasMoreElements()) {
                 InetAddress address = addrs.nextElement();
                 if (!address.isLoopbackAddress() && address instanceof Inet4Address) {
-                        localIp = address.getHostAddress();
+                    return address.getHostAddress();
                 }
             }
         }
-        }
-        return localIp;
+        return addr.getHostAddress();
     }
     
+    /**
+     * Generates a synchronization key based on source and destination cluster types.
+     *
+     * @param sourceClusterType The source cluster type.
+     * @param destClusterType   The destination cluster type.
+     * @return The generated synchronization key.
+     */
     public static String generateSyncKey(ClusterTypeEnum sourceClusterType, ClusterTypeEnum destClusterType) {
-
-        return Joiner.on(":").join(sourceClusterType.getCode(), destClusterType.getCode());
+        return Joiner.on(SEPARATOR).join(sourceClusterType.getCode(), destClusterType.getCode());
     }
     
+    /**
+     * Gets the operation ID from the given TaskDO.
+     *
+     * @param taskDO The TaskDO containing the operation ID.
+     * @return The operation ID.
+     */
     public static String getOperationId(TaskDO taskDO) {
-
         return taskDO.getOperationId();
     }
     
+    /**
+     * Generates a unique operation ID.
+     *
+     * @return The generated operation ID.
+     */
     public static String generateOperationId() {
-
         return UUID.randomUUID().toString();
     }
 }
+
+

nacossync-worker/src/main/java/com/alibaba/nacossync/util/StringUtils.java

@@ -12,6 +12,17 @@
  */
 package com.alibaba.nacossync.util;
 
+import com.google.common.base.Joiner;
+import lombok.extern.slf4j.Slf4j;
+
+import java.net.URLDecoder;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 import static com.alibaba.nacossync.util.DubboConstants.DUBBO_PATH_FORMAT;
 import static com.alibaba.nacossync.util.DubboConstants.DUBBO_URL_FORMAT;
 import static com.alibaba.nacossync.util.DubboConstants.INSTANCE_IP_KEY;
@@ -20,17 +31,6 @@ import static com.alibaba.nacossync.util.DubboConstants.INTERFACE_KEY;
 import static com.alibaba.nacossync.util.DubboConstants.PROTOCOL_KEY;
 import static com.alibaba.nacossync.util.DubboConstants.ZOOKEEPER_SEPARATOR;
 
-import com.google.common.base.Joiner;
-import com.google.common.collect.Maps;
-import java.io.UnsupportedEncodingException;
-import java.net.URLDecoder;
-import java.net.URLEncoder;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-import lombok.extern.slf4j.Slf4j;
-
 /**
  * @author paderlol
  * @date: 2018-12-25 21:08
@@ -56,9 +56,9 @@ public final class StringUtils {
      */
     private static Map<String, String> parseKeyValuePair(String str, String itemSeparator) {
         String[] tmp = str.split(itemSeparator);
-        Map<String, String> map = new HashMap<String, String>(tmp.length);
-        for (int i = 0; i < tmp.length; i++) {
-            Matcher matcher = KVP_PATTERN.matcher(tmp[i]);
+        Map<String, String> map = new HashMap<>(tmp.length);
+        for (String s : tmp) {
+            Matcher matcher = KVP_PATTERN.matcher(s);
             if (!matcher.matches()) {
                 continue;
             }
@@ -74,19 +74,14 @@ public final class StringUtils {
      * @return Parameters instance.
      */
     public static Map<String, String> parseQueryString(String qs) {
-        try {
         
-            String decodePath = URLDecoder.decode(qs, "UTF-8");
+        String decodePath = URLDecoder.decode(qs, StandardCharsets.UTF_8);
         if (isEmpty(decodePath)) {
             return new HashMap<>();
         }
         decodePath = substringAfter(decodePath, "?");
         return parseKeyValuePair(decodePath, "&");
         
-        } catch (UnsupportedEncodingException e) {
-            log.warn("parse query string failed", e);
-            return Maps.newHashMap();
-        }
     }
 
     /**
@@ -101,8 +96,7 @@ public final class StringUtils {
 
     public static Map<String, String> parseIpAndPortString(String path) {
         
-        try {
-            String decodePath = URLDecoder.decode(path, "UTF-8");
+        String decodePath = URLDecoder.decode(path, StandardCharsets.UTF_8);
         Matcher matcher = IP_PORT_PATTERN.matcher(decodePath);
         // extract the ones that match the rules
         Map<String, String> instanceMap = new HashMap<>(3);
@@ -116,10 +110,6 @@ public final class StringUtils {
             break;
         }
         return instanceMap;
-        } catch (UnsupportedEncodingException e) {
-            log.warn("parse query string failed", e);
-            return Maps.newHashMap();
-        }
         
     }
 
@@ -169,16 +159,11 @@ public final class StringUtils {
 
     public static String convertDubboFullPathForZk(Map<String, String> metaData, String providersPath, String ip,
         int port) {
-        try {
         String urlParam = Joiner.on("&").withKeyValueSeparator("=").join(metaData);
         String instanceUrl = String.format(DUBBO_URL_FORMAT, metaData.get(PROTOCOL_KEY), ip, port,
             metaData.get(INTERFACE_KEY), urlParam);
         
-            return Joiner.on(ZOOKEEPER_SEPARATOR).join(providersPath, URLEncoder.encode(instanceUrl, "UTF-8"));
-        } catch (UnsupportedEncodingException e) {
-            log.warn("convert Dubbo full path", e);
-            return "";
-        }
+        return Joiner.on(ZOOKEEPER_SEPARATOR).join(providersPath, URLEncoder.encode(instanceUrl, StandardCharsets.UTF_8));
         
     }
 

nacossync-worker/src/test/java/com/alibaba/nacossync/extension/impl/ConsulSyncToNacosServiceImplTest.java

@@ -91,7 +91,7 @@ public class ConsulSyncToNacosServiceImplTest {
     public void mockSync(TaskDO taskDO) throws Exception {
         Instance instance = mock(Instance.class);
         Map<String, String> metadata = Maps.newHashMap();
-        metadata.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, TEST_SOURCE_CLUSTER_ID);
+        metadata.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, TEST_SOURCE_CLUSTER_ID);
         HealthService healthServiceUp = buildHealthService(TEST_INSTANCE_ADDRESS, 8080, Maps.newHashMap());
         HealthService healthServiceDown = buildHealthService(TEST_INSTANCE_ADDRESS, 8081, metadata);
         List<HealthService> healthServiceList = Lists.newArrayList(healthServiceUp, healthServiceDown);
@@ -129,7 +129,7 @@ public class ConsulSyncToNacosServiceImplTest {
         when(taskDO.getDestClusterId()).thenReturn(TEST_DEST_CLUSTER_ID);
         doReturn(destNamingService).when(nacosServerHolder).get(anyString());
         Map<String, String> metadata = Maps.newHashMap();
-        metadata.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, TEST_SOURCE_CLUSTER_ID);
+        metadata.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, TEST_SOURCE_CLUSTER_ID);
         List<Instance> allInstances = Lists.newArrayList(instance);
         doReturn(allInstances).when(destNamingService).getAllInstances(anyString());
         doReturn(metadata).when(instance).getMetadata();

nacossync-worker/src/test/java/com/alibaba/nacossync/extension/impl/EurekaSyncToNacosServiceImplTest.java

@@ -111,7 +111,7 @@ public class EurekaSyncToNacosServiceImplTest {
         List<InstanceInfo> eurekaInstances = Lists.newArrayList();
         doReturn(eurekaInstances).when(eurekaNamingService).getApplications(anyString());
         Map<String, String> metadata = Maps.newHashMap();
-        metadata.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, TEST_SOURCE_CLUSTER_ID);
+        metadata.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, TEST_SOURCE_CLUSTER_ID);
         List<Instance> allInstances = Lists.newArrayList(instance);
         doReturn(allInstances).when(destNamingService).getAllInstances(anyString());
         doReturn(metadata).when(instance).getMetadata();

nacossync-worker/src/test/java/com/alibaba/nacossync/extension/impl/NacosSyncToNacosServiceImplTest.java

@@ -90,7 +90,7 @@ public class NacosSyncToNacosServiceImplTest {
         doReturn(sourceNamingService).when(nacosServerHolder).get(anyString());
         doNothing().when(sourceNamingService).unsubscribe(any(), any());
         Map<String, String> metadata = Maps.newHashMap();
-        metadata.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, TEST_SOURCE_CLUSTER_ID);
+        metadata.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, TEST_SOURCE_CLUSTER_ID);
         List<Instance> allInstances = Lists.newArrayList(instance);
         doReturn(allInstances).when(sourceNamingService).getAllInstances(anyString());
         doReturn(metadata).when(instance).getMetadata();

nacossync-worker/src/test/java/com/alibaba/nacossync/extension/impl/ZookeeperSyncToNacosServiceImplTest.java

@@ -107,7 +107,7 @@ public class ZookeeperSyncToNacosServiceImplTest {
         doNothing().when(treeCache).close();
         Instance instance = mock(Instance.class);
         Map<String, String> metadata = Maps.newHashMap();
-        metadata.put(SkyWalkerConstants.SOURCE_CLUSTERID_KEY, TEST_SOURCE_CLUSTER_ID);
+        metadata.put(SkyWalkerConstants.SOURCE_CLUSTER_ID_KEY, TEST_SOURCE_CLUSTER_ID);
         List<Instance> allInstances = Lists.newArrayList(instance);
 
         doReturn(allInstances).when(destNamingService).getAllInstances(anyString());

nacossync-worker/src/test/java/com/alibaba/nacossync/utils/BatchTaskExecutorTest.java

@@ -0,0 +1,60 @@
+package com.alibaba.nacossync.utils;
+
+import com.alibaba.nacossync.pojo.model.TaskDO;
+import com.alibaba.nacossync.util.BatchTaskExecutor;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class BatchTaskExecutorTest {
+
+    /**
+     * Test the batch operation to ensure all tasks are executed.
+     */
+    @Test
+    public void testBatchOperation() {
+        // Prepare a list of tasks
+        List<TaskDO> tasks = new ArrayList<>();
+        for (int i = 0; i < 10; i++) {
+            TaskDO task = new TaskDO();
+            task.setServiceName("Service" + i);
+            tasks.add(task);
+        }
+
+        // Create a counter to track the number of executed tasks
+        AtomicInteger counter = new AtomicInteger(0);
+
+        // Execute batch operation
+        BatchTaskExecutor.batchOperation(tasks, task -> counter.incrementAndGet());
+
+        // Verify that all tasks have been executed
+        assertEquals(tasks.size(), counter.get());
+    }
+
+    /**
+     * Test the averageAssign method to ensure the correct distribution of tasks.
+     */
+
+
+    /**
+     * Test the batch operation with an empty list to ensure no errors occur.
+     */
+    @Test
+    public void testBatchOperationWithEmptyList() {
+        // Prepare an empty list of tasks
+        List<TaskDO> tasks = new ArrayList<>();
+
+        // Create a counter to track the number of executed tasks
+        AtomicInteger counter = new AtomicInteger(0);
+
+        // Execute batch operation
+        BatchTaskExecutor.batchOperation(tasks, task -> counter.incrementAndGet());
+
+        // Verify that no tasks have been executed
+        assertEquals(0, counter.get());
+    }
+}

nacossync-worker/src/test/java/com/alibaba/nacossync/utils/ConsulUtilsTest.java

@@ -0,0 +1,81 @@
+package com.alibaba.nacossync.utils;
+
+import com.alibaba.nacossync.util.ConsulUtils;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class ConsulUtilsTest {
+
+    /**
+     * Test the transferMetadata method with valid tags containing key-value pairs.
+     * This test ensures that all valid tags are correctly parsed into the resulting metadata map.
+     */
+    @Test
+    public void testTransferMetadata_withValidTags() {
+        // Test with valid tags containing key-value pairs
+        List<String> tags = Arrays.asList("key1=value1", "key2=value2");
+        Map<String, String> expectedMetadata = new HashMap<>();
+        expectedMetadata.put("key1", "value1");
+        expectedMetadata.put("key2", "value2");
+
+        Map<String, String> actualMetadata = ConsulUtils.transferMetadata(tags);
+
+        // Assert that the actual metadata matches the expected metadata
+        assertEquals(expectedMetadata, actualMetadata);
+    }
+
+    /**
+     * Test the transferMetadata method with invalid tags that do not contain key-value pairs.
+     * This test ensures that only valid key-value pairs are included in the resulting metadata map.
+     */
+    @Test
+    public void testTransferMetadata_withInvalidTags() {
+        // Test with tags that do not contain key-value pairs
+        List<String> tags = Arrays.asList("key1", "key2=value2", "invalidTag");
+        Map<String, String> expectedMetadata = new HashMap<>();
+        expectedMetadata.put("key2", "value2");
+
+        Map<String, String> actualMetadata = ConsulUtils.transferMetadata(tags);
+
+        // Assert that the actual metadata matches the expected metadata
+        assertEquals(expectedMetadata, actualMetadata);
+    }
+
+    /**
+     * Test the transferMetadata method with an empty list of tags.
+     * This test ensures that an empty list results in an empty metadata map.
+     */
+    @Test
+    public void testTransferMetadata_withEmptyTags() {
+        // Test with an empty list of tags
+        List<String> tags = Collections.emptyList();
+        Map<String, String> expectedMetadata = new HashMap<>();
+
+        Map<String, String> actualMetadata = ConsulUtils.transferMetadata(tags);
+
+        // Assert that the actual metadata is empty
+        assertEquals(expectedMetadata, actualMetadata);
+    }
+
+    /**
+     * Test the transferMetadata method with null tags.
+     * This test ensures that a null input results in an empty metadata map.
+     */
+    @Test
+    public void testTransferMetadata_withNullTags() {
+        // Test with null tags
+        Map<String, String> expectedMetadata = new HashMap<>();
+
+        Map<String, String> actualMetadata = ConsulUtils.transferMetadata(null);
+
+        // Assert that the actual metadata is empty
+        assertEquals(expectedMetadata, actualMetadata);
+    }
+}

nacossync-worker/src/test/java/com/alibaba/nacossync/utils/DubboConstantsTest.java

@@ -0,0 +1,62 @@
+package com.alibaba.nacossync.utils;
+
+import com.alibaba.nacossync.util.DubboConstants;
+import org.junit.jupiter.api.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static com.alibaba.nacossync.util.DubboConstants.GROUP_KEY;
+import static com.alibaba.nacossync.util.DubboConstants.INTERFACE_KEY;
+import static com.alibaba.nacossync.util.DubboConstants.RELEASE_KEY;
+import static com.alibaba.nacossync.util.DubboConstants.VERSION_KEY;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class DubboConstantsTest {
+    @Test
+    public void testCreateServiceName_withValidParameters() {
+        Map<String, String> queryParams = new HashMap<>();
+        queryParams.put(INTERFACE_KEY, "com.example.Service");
+        queryParams.put(VERSION_KEY, "1.0.0");
+        queryParams.put(GROUP_KEY, "testGroup");
+        
+        String expectedServiceName = "providers:com.example.Service:1.0.0:testGroup";
+        String actualServiceName = DubboConstants.createServiceName(queryParams);
+        assertEquals(expectedServiceName, actualServiceName);
+    }
+    
+    @Test
+    public void testCreateServiceName_withBlankGroup() {
+        Map<String, String> queryParams = new HashMap<>();
+        queryParams.put(INTERFACE_KEY, "com.example.Service");
+        queryParams.put(VERSION_KEY, "1.0.0");
+        queryParams.put(RELEASE_KEY, "2.7.3");
+        
+        String expectedServiceName = "providers:com.example.Service:1.0.0:";
+        String actualServiceName = DubboConstants.createServiceName(queryParams);
+        assertEquals(expectedServiceName, actualServiceName);
+    }
+    
+    @Test
+    public void testCreateServiceName_withNoGroupOrRelease() {
+        Map<String, String> queryParams = new HashMap<>();
+        queryParams.put(INTERFACE_KEY, "com.example.Service");
+        queryParams.put(VERSION_KEY, "1.0.0");
+        
+        String expectedServiceName = "providers:com.example.Service:1.0.0";
+        String actualServiceName = DubboConstants.createServiceName(queryParams);
+        assertEquals(expectedServiceName, actualServiceName);
+    }
+    
+    @Test
+    public void testCreateServiceName_withComplexRelease() {
+        Map<String, String> queryParams = new HashMap<>();
+        queryParams.put(INTERFACE_KEY, "com.example.Service");
+        queryParams.put(VERSION_KEY, "1.0.0");
+        queryParams.put(RELEASE_KEY, "2.8.1");
+        
+        String expectedServiceName = "providers:com.example.Service:1.0.0:";
+        String actualServiceName = DubboConstants.createServiceName(queryParams);
+        assertEquals(expectedServiceName, actualServiceName);
+    }
+}

nacossync-worker/src/test/java/com/alibaba/nacossync/utils/NacosUtilsTest.java

@@ -0,0 +1,39 @@
+package com.alibaba.nacossync.utils;
+
+import com.alibaba.nacos.api.common.Constants;
+import com.alibaba.nacossync.util.NacosUtils;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class NacosUtilsTest {
+    
+    /**
+     * Test getGroupNameOrDefault with a non-blank group name.
+     */
+    @Test
+    public void testGetGroupNameOrDefault_withNonBlankGroupName() {
+        String groupName = "testGroup";
+        String result = NacosUtils.getGroupNameOrDefault(groupName);
+        assertEquals("testGroup", result);
+    }
+    
+    /**
+     * Test getGroupNameOrDefault with a blank group name.
+     */
+    @Test
+    public void testGetGroupNameOrDefault_withBlankGroupName() {
+        String groupName = " ";
+        String result = NacosUtils.getGroupNameOrDefault(groupName);
+        assertEquals(Constants.DEFAULT_GROUP, result);
+    }
+    
+    /**
+     * Test getGroupNameOrDefault with a null group name.
+     */
+    @Test
+    public void testGetGroupNameOrDefault_withNullGroupName() {
+        String result = NacosUtils.getGroupNameOrDefault(null);
+        assertEquals(Constants.DEFAULT_GROUP, result);
+    }
+}

nacossync-worker/src/test/java/com/alibaba/nacossync/utils/SkyWalkerUtilTest.java

@@ -1,22 +1,118 @@
 package com.alibaba.nacossync.utils;
 
-import org.junit.Assert;
+import com.alibaba.nacossync.constant.ClusterTypeEnum;
+import com.alibaba.nacossync.pojo.request.ClusterAddRequest;
+import com.alibaba.nacossync.pojo.request.TaskAddRequest;
+import com.alibaba.nacossync.util.SkyWalkerUtil;
 import org.junit.Test;
 
-import com.alibaba.nacossync.util.SkyWalkerUtil;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.fail;
 
-/**
- * @author NacosSync
- * @version $Id: SkyWalkerUtilTest.java, v 0.1 2018-09-26 下午3:47 NacosSync Exp $$
- */
 public class SkyWalkerUtilTest {
     
-
+    /**
+     * Test the MD5 hashing function with a sample string.
+     */
     @Test
-    public void skyWalkerUtilTest() throws Exception {
-
-        String ip = SkyWalkerUtil.getLocalIp();
-        Assert.assertNotEquals("127.0.0.1", ip);
+    public void testStringToMd5() {
+        String value = "testValue";
+        String expectedMd5 = SkyWalkerUtil.stringToMd5(value);
+        assertFalse(expectedMd5.isEmpty());
+        assertEquals(32, expectedMd5.length());
     }
     
+    /**
+     * Test the task ID generation using a TaskAddRequest object.
+     */
+    @Test
+    public void testGenerateTaskId_withTaskAddRequest() {
+        TaskAddRequest request = new TaskAddRequest();
+        request.setServiceName("testService");
+        request.setGroupName("testGroup");
+        request.setSourceClusterId("sourceCluster");
+        request.setDestClusterId("destCluster");
+        
+        String taskId = SkyWalkerUtil.generateTaskId(request);
+        String expectedMd5 = SkyWalkerUtil.stringToMd5("testService_testGroup_sourceCluster_destCluster");
+        assertEquals(expectedMd5, taskId);
     }
+    
+    /**
+     * Test the task ID generation using individual parameters.
+     */
+    @Test
+    public void testGenerateTaskId_withParameters() {
+        String serviceName = "testService";
+        String groupName = "testGroup";
+        String sourceClusterId = "sourceCluster";
+        String destClusterId = "destCluster";
+        
+        String taskId = SkyWalkerUtil.generateTaskId(serviceName, groupName, sourceClusterId, destClusterId);
+        String expectedMd5 = SkyWalkerUtil.stringToMd5("testService_testGroup_sourceCluster_destCluster");
+        assertEquals(expectedMd5, taskId);
+    }
+    
+    /**
+     * Test the cluster ID generation using a ClusterAddRequest object.
+     */
+    @Test
+    public void testGenerateClusterId() {
+        ClusterAddRequest request = new ClusterAddRequest();
+        request.setClusterName("testCluster");
+        request.setClusterType("Nacos");
+        
+        String clusterId = SkyWalkerUtil.generateClusterId(request);
+        String expectedMd5 = SkyWalkerUtil.stringToMd5("testCluster_Nacos");
+        assertEquals(expectedMd5, clusterId);
+    }
+    
+    /**
+     * Test the retrieval of the local IP address.
+     * This ensures that the local IP address is not null and is a valid IP address.
+     */
+    @Test
+    public void testGetLocalIp() throws Exception {
+        String localIp = SkyWalkerUtil.getLocalIp();
+        assertNotNull(localIp);
+        assertFalse(localIp.isEmpty());
+        try {
+            InetAddress ip = InetAddress.getByName(localIp);
+            assertNotNull(ip);
+        } catch (UnknownHostException e) {
+            fail("The IP address is invalid: " + e.getMessage());
+        }
+    }
+    
+    /**
+     * Test the synchronization key generation using source and destination cluster types.
+     */
+    @Test
+    public void testGenerateSyncKey() {
+        ClusterTypeEnum sourceClusterType = ClusterTypeEnum.NACOS;
+        ClusterTypeEnum destClusterType = ClusterTypeEnum.ZK;
+        
+        String syncKey = SkyWalkerUtil.generateSyncKey(sourceClusterType, destClusterType);
+        String expectedSyncKey = sourceClusterType.getCode() + ":" + destClusterType.getCode();
+        assertEquals(expectedSyncKey, syncKey);
+    }
+    
+    /**
+     * Test the operation ID generation to ensure it is unique each time.
+     */
+    @Test
+    public void testGenerateOperationId() {
+        String operationId1 = SkyWalkerUtil.generateOperationId();
+        String operationId2 = SkyWalkerUtil.generateOperationId();
+        assertNotNull(operationId1);
+        assertNotNull(operationId2);
+        assertNotEquals(operationId1, operationId2);
+    }
+}
+

pom.xml

@@ -33,13 +33,13 @@
         <curator.version>4.3.0</curator.version>
         <mockito.version>1.10.19</mockito.version>
         <nacos-client.verison>1.4.7</nacos-client.verison>
-        <lombok.verison>1.18.2</lombok.verison>
+        <lombok.verison>1.18.34</lombok.verison>
         <consul-api.verison>1.3.1</consul-api.verison>
         <commoms-lang3.verison>3.12.0</commoms-lang3.verison>
         <guava.verison>33.2.0-jre</guava.verison>
         <versions-maven-plugin.version>2.2</versions-maven-plugin.version>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
         <maven-jar-plugin.version>3.2.0</maven-jar-plugin.version>
         <maven-enforcer-plugin.version>1.4.1</maven-enforcer-plugin.version>
         <maven-source-plugin.version>3.0.1</maven-source-plugin.version>
@@ -181,6 +181,8 @@
         </dependencies>
     </dependencyManagement>
 
+    
+    
     <build>
         <plugins>
             <plugin>
@@ -384,4 +386,11 @@
             </plugin>
         </plugins>
     </reporting>
+    <repositories>
+        <repository>
+            <id>maven_central</id>
+            <name>Maven Central</name>
+            <url>https://repo.maven.apache.org/maven2/</url>
+        </repository>
+    </repositories>
 </project>