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@ -17,22 +17,14 @@
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package org.apache.dolphinscheduler.common.queue; |
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import org.apache.commons.configuration.Configuration; |
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import org.apache.commons.configuration.ConfigurationException; |
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import org.apache.commons.configuration.PropertiesConfiguration; |
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import org.apache.curator.framework.CuratorFramework; |
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import org.apache.curator.framework.CuratorFrameworkFactory; |
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import org.apache.curator.retry.ExponentialBackoffRetry; |
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import org.apache.dolphinscheduler.common.Constants; |
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import org.apache.dolphinscheduler.common.utils.Bytes; |
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import org.apache.dolphinscheduler.common.utils.IpUtils; |
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import org.apache.dolphinscheduler.common.utils.OSUtils; |
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import org.apache.dolphinscheduler.common.zk.DefaultEnsembleProvider; |
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import org.apache.dolphinscheduler.common.zk.ZookeeperConfig; |
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import org.apache.zookeeper.CreateMode; |
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import org.apache.zookeeper.data.Stat; |
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import org.apache.dolphinscheduler.common.zk.ZookeeperOperator; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import org.springframework.beans.factory.annotation.Autowired; |
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import org.springframework.stereotype.Service; |
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import java.util.*; |
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@ -40,35 +32,13 @@ import java.util.*;
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* A singleton of a task queue implemented with zookeeper |
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* tasks queue implemention |
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*/ |
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@Service |
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public class TaskQueueZkImpl implements ITaskQueue { |
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private static final Logger logger = LoggerFactory.getLogger(TaskQueueZkImpl.class); |
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private static volatile TaskQueueZkImpl instance; |
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private CuratorFramework zkClient; |
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private ZookeeperConfig zookeeperConfig; |
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private CuratorFramework getZkClient() { |
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return zkClient; |
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} |
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private TaskQueueZkImpl(){ |
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init(); |
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} |
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public static TaskQueueZkImpl getInstance(){ |
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if (null == instance) { |
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synchronized (TaskQueueZkImpl.class) { |
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if(null == instance) { |
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instance = new TaskQueueZkImpl(); |
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} |
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} |
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} |
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return instance; |
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} |
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@Autowired |
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private ZookeeperOperator zookeeperOperator; |
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/** |
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* get all tasks from tasks queue |
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@ -78,14 +48,12 @@ public class TaskQueueZkImpl implements ITaskQueue {
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@Override |
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public List<String> getAllTasks(String key) { |
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try { |
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List<String> list = getZkClient().getChildren().forPath(getTasksPath(key)); |
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List<String> list = zookeeperOperator.getChildrenKeys(getTasksPath(key)); |
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return list; |
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} catch (Exception e) { |
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logger.error("get all tasks from tasks queue exception",e); |
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} |
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return new ArrayList<String>(); |
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return new ArrayList<>(); |
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} |
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/** |
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@ -99,22 +67,8 @@ public class TaskQueueZkImpl implements ITaskQueue {
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public boolean checkTaskExists(String key, String task) { |
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String taskPath = getTasksPath(key) + Constants.SINGLE_SLASH + task; |
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try { |
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Stat stat = zkClient.checkExists().forPath(taskPath); |
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return zookeeperOperator.isExisted(taskPath); |
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if(null == stat){ |
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logger.info("check task:{} not exist in task queue",task); |
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return false; |
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}else{ |
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logger.info("check task {} exists in task queue ",task); |
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return true; |
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} |
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} catch (Exception e) { |
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logger.info(String.format("task {} check exists in task queue exception ", task), e); |
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} |
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return false; |
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} |
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@ -128,9 +82,7 @@ public class TaskQueueZkImpl implements ITaskQueue {
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public boolean add(String key, String value){ |
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try { |
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String taskIdPath = getTasksPath(key) + Constants.SINGLE_SLASH + value; |
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String result = getZkClient().create().withMode(CreateMode.PERSISTENT).forPath(taskIdPath, Bytes.toBytes(value)); |
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logger.info("add task : {} to tasks queue , result success",result); |
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zookeeperOperator.persist(taskIdPath, value); |
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return true; |
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} catch (Exception e) { |
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logger.error("add task to tasks queue exception",e); |
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@ -153,8 +105,7 @@ public class TaskQueueZkImpl implements ITaskQueue {
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@Override |
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public List<String> poll(String key, int tasksNum) { |
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try{ |
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CuratorFramework zk = getZkClient(); |
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List<String> list = zk.getChildren().forPath(getTasksPath(key)); |
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List<String> list = zookeeperOperator.getChildrenKeys(getTasksPath(key)); |
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if(list != null && list.size() > 0){ |
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@ -277,15 +228,12 @@ public class TaskQueueZkImpl implements ITaskQueue {
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@Override |
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public void removeNode(String key, String nodeValue){ |
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CuratorFramework zk = getZkClient(); |
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String tasksQueuePath = getTasksPath(key) + Constants.SINGLE_SLASH; |
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String taskIdPath = tasksQueuePath + nodeValue; |
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logger.info("consume task {}", taskIdPath); |
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logger.info("removeNode task {}", taskIdPath); |
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try{ |
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Stat stat = zk.checkExists().forPath(taskIdPath); |
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if(stat != null){ |
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zk.delete().forPath(taskIdPath); |
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} |
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zookeeperOperator.remove(taskIdPath); |
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}catch(Exception e){ |
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logger.error(String.format("delete task:%s from zookeeper fail, exception:" ,nodeValue) ,e); |
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} |
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@ -307,12 +255,9 @@ public class TaskQueueZkImpl implements ITaskQueue {
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if(value != null && value.trim().length() > 0){ |
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String path = getTasksPath(key) + Constants.SINGLE_SLASH; |
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CuratorFramework zk = getZkClient(); |
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Stat stat = zk.checkExists().forPath(path + value); |
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if(null == stat){ |
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String result = zk.create().withMode(CreateMode.PERSISTENT).forPath(path + value,Bytes.toBytes(value)); |
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logger.info("add task:{} to tasks set result:{} ",value,result); |
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if(!zookeeperOperator.isExisted(path + value)){ |
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zookeeperOperator.persist(path + value,value); |
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logger.info("add task:{} to tasks set ",value); |
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} else{ |
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logger.info("task {} exists in tasks set ",value); |
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} |
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@ -336,15 +281,7 @@ public class TaskQueueZkImpl implements ITaskQueue {
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public void srem(String key, String value) { |
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try{ |
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String path = getTasksPath(key) + Constants.SINGLE_SLASH; |
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CuratorFramework zk = getZkClient(); |
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Stat stat = zk.checkExists().forPath(path + value); |
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if(null != stat){ |
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zk.delete().forPath(path + value); |
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logger.info("delete task:{} from tasks set ",value); |
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}else{ |
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logger.info("delete task:{} from tasks set fail, there is no this task",value); |
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} |
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zookeeperOperator.remove(path + value); |
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}catch(Exception e){ |
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logger.error(String.format("delete task:" + value + " exception"),e); |
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@ -363,7 +300,7 @@ public class TaskQueueZkImpl implements ITaskQueue {
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Set<String> tasksSet = new HashSet<>(); |
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try { |
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List<String> list = getZkClient().getChildren().forPath(getTasksPath(key)); |
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List<String> list = zookeeperOperator.getChildrenKeys(getTasksPath(key)); |
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for (String task : list) { |
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tasksSet.add(task); |
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@ -377,56 +314,6 @@ public class TaskQueueZkImpl implements ITaskQueue {
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return tasksSet; |
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} |
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/** |
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* Init the task queue of zookeeper node |
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*/ |
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private void init(){ |
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initZkClient(); |
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try { |
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String tasksQueuePath = getTasksPath(Constants.DOLPHINSCHEDULER_TASKS_QUEUE); |
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String tasksCancelPath = getTasksPath(Constants.DOLPHINSCHEDULER_TASKS_KILL); |
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for(String taskQueuePath : new String[]{tasksQueuePath,tasksCancelPath}){ |
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if(zkClient.checkExists().forPath(taskQueuePath) == null){ |
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// create a persistent parent node
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zkClient.create().creatingParentContainersIfNeeded() |
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.withMode(CreateMode.PERSISTENT).forPath(taskQueuePath); |
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logger.info("create tasks queue parent node success : {} ",taskQueuePath); |
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} |
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} |
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} catch (Exception e) { |
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logger.error("create zk node failure",e); |
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} |
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} |
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private void initZkClient() { |
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Configuration conf = null; |
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try { |
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conf = new PropertiesConfiguration(Constants.ZOOKEEPER_PROPERTIES_PATH); |
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} catch (ConfigurationException ex) { |
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logger.error("load zookeeper properties file failed, system exit"); |
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System.exit(-1); |
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} |
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zkClient = CuratorFrameworkFactory.builder().ensembleProvider(new DefaultEnsembleProvider(conf.getString("zookeeper.quorum"))) |
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.retryPolicy(new ExponentialBackoffRetry(conf.getInt("zookeeper.retry.base.sleep"), conf.getInt("zookeeper.retry.maxtime"), conf.getInt("zookeeper.retry.max.sleep"))) |
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.sessionTimeoutMs(conf.getInt("zookeeper.session.timeout")) |
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.connectionTimeoutMs(conf.getInt("zookeeper.connection.timeout")) |
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.build(); |
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zkClient.start(); |
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try { |
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zkClient.blockUntilConnected(); |
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} catch (final Exception ex) { |
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throw new RuntimeException(ex); |
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} |
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} |
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/** |
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* Clear the task queue of zookeeper node |
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*/ |
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@ -437,16 +324,12 @@ public class TaskQueueZkImpl implements ITaskQueue {
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String tasksCancelPath = getTasksPath(Constants.DOLPHINSCHEDULER_TASKS_KILL); |
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for(String taskQueuePath : new String[]{tasksQueuePath,tasksCancelPath}){ |
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if(zkClient.checkExists().forPath(taskQueuePath) != null){ |
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List<String> list = zkClient.getChildren().forPath(taskQueuePath); |
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if(zookeeperOperator.isExisted(taskQueuePath)){ |
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List<String> list = zookeeperOperator.getChildrenKeys(taskQueuePath); |
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for (String task : list) { |
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zkClient.delete().forPath(taskQueuePath + Constants.SINGLE_SLASH + task); |
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zookeeperOperator.remove(taskQueuePath + Constants.SINGLE_SLASH + task); |
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logger.info("delete task from tasks queue : {}/{} ",taskQueuePath,task); |
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} |
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} |
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} |
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dk.technoboy
5 years ago