org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent#getType

Source File: ViewChildListener.java From dble with GNU General Public License v2.0

6 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
    ChildData childData = event.getData();
    ClusterDelayProvider.delayWhenReponseViewNotic();
    switch (event.getType()) {
        case CHILD_ADDED:
            createOrUpdateViewMeta(childData, false);
            break;
        case CHILD_UPDATED:
            createOrUpdateViewMeta(childData, true);
            break;
        case CHILD_REMOVED:
            deleteNode(childData);
            break;
        default:
            break;
    }
}

Source File: DDLChildListener.java From dble with GNU General Public License v2.0

6 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
    ClusterDelayProvider.delayAfterGetDdlNotice();
    ChildData childData = event.getData();
    switch (event.getType()) {
        case CHILD_ADDED:
            try {
                lockTableByNewNode(childData);
            } catch (Exception e) {
                LOGGER.warn("CHILD_ADDED error", e);
            }
            break;
        case CHILD_UPDATED:
            updateMeta(childData);
            break;
        case CHILD_REMOVED:
            deleteNode(childData);
            break;
        default:
            break;
    }
}

Source File: BinDataPathChildrenCacheListener.java From Mycat2 with GNU General Public License v3.0

6 votes

@Override public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
    ChildData data = event.getData();
    switch (event.getType()) {

        case CHILD_ADDED:

            add(data.getPath().substring(data.getPath().lastIndexOf("/")+1),event.getData().getData()) ;
            break;
        case CHILD_REMOVED:
            delete(data.getPath().substring(data.getPath().lastIndexOf("/")+1),event.getData().getData()); ;
            break;
        case CHILD_UPDATED:
            add(data.getPath().substring(data.getPath().lastIndexOf("/")+1),event.getData().getData()) ;
            break;
        default:
            break;
    }
}

Source File: ZKWorkerController.java From twister2 with Apache License 2.0

6 votes

/**
 * listen for additions to the job events directory in zk server
 * @param cache
 */
private void addEventsChildrenCacheListener(PathChildrenCache cache) {
  PathChildrenCacheListener listener = new PathChildrenCacheListener() {

    public void childEvent(CuratorFramework clientOfEvent, PathChildrenCacheEvent event) {

      switch (event.getType()) {
        case CHILD_ADDED:
          eventPublished(event);
          break;

        default:
          // nothing to do
      }
    }
  };
  cache.getListenable().addListener(listener);
}

Source File: ZKMasterController.java From twister2 with Apache License 2.0

6 votes

/**
 * create the listener for persistent worker znodes to determine worker status changes
 */
private void addPersChildrenCacheListener(PathChildrenCache cache) {
  PathChildrenCacheListener listener = new PathChildrenCacheListener() {

    public void childEvent(CuratorFramework clientOfEvent, PathChildrenCacheEvent event) {

      switch (event.getType()) {

        case CHILD_UPDATED:
          childZnodeUpdated(event);
          break;

        default:
          // nothing to do
      }
    }
  };
  cache.getListenable().addListener(listener);
}

Source File: ZooKeeperCommandExecutor.java From centraldogma with Apache License 2.0

6 votes

@Override
public void childEvent(CuratorFramework unused, PathChildrenCacheEvent event) throws Exception {
    if (event.getType() != PathChildrenCacheEvent.Type.CHILD_ADDED) {
        return;
    }

    final long lastKnownRevision = revisionFromPath(event.getData().getPath());
    try {
        replayLogs(lastKnownRevision);
    } catch (ReplicationException ignored) {
        // replayLogs() logs and handles the exception already, so we just bail out here.
        return;
    }

    oldLogRemover.touch();
}

Source File: BasePathChildrenCacheListener.java From hermes with Apache License 2.0

6 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
	if (event.getType() == PathChildrenCacheEvent.Type.CHILD_ADDED
	      || event.getType() == PathChildrenCacheEvent.Type.CHILD_REMOVED
	      || event.getType() == PathChildrenCacheEvent.Type.CHILD_UPDATED) {

		new VersionGuardedTask(m_version) {

			@Override
			public String name() {
				return getName();
			}

			@Override
			protected void doRun() {
				childChanged();
			}

			@Override
			protected void onGuardNotPass() {
				removeListener();
			}
		}.run();

	}
}

Source File: BrokerListener.java From kafka-monitor with Apache License 2.0

6 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {

    logger.debug("BrokerListener {} {}", event.getType(), event.getData());

    switch (event.getType()) {
        case CHILD_REMOVED:
            removeBroker(parseBrokerID(event.getData()));
            break;
        case CHILD_ADDED:
        case CHILD_UPDATED:
            addBroker(parseBroker(event.getData()));
            break;
        case INITIALIZED:
            brokerPathCache.getCurrentData().stream()
                    .map(BrokerListener.this::parseBroker)
                    .forEach(broker -> addBroker(broker));
            break;
        default:
            break;

    }

}

Source File: ZookeeperSyncToNacosServiceImpl.java From nacos-sync with Apache License 2.0

6 votes

private void processEvent(TaskDO taskDO, NamingService destNamingService, PathChildrenCacheEvent event, String path,
    Map<String, String> queryParam) throws NacosException {
    Map<String, String> ipAndPortParam = parseIpAndPortString(path);
    Instance instance = buildSyncInstance(queryParam, ipAndPortParam, taskDO);
    switch (event.getType()) {
        case CHILD_ADDED:
        case CHILD_UPDATED:

            destNamingService.registerInstance(
                getServiceNameFromCache(taskDO.getTaskId(), queryParam), instance);
            break;
        case CHILD_REMOVED:

            destNamingService.deregisterInstance(
                getServiceNameFromCache(taskDO.getTaskId(), queryParam),
                ipAndPortParam.get(INSTANCE_IP_KEY),
                Integer.parseInt(ipAndPortParam.get(INSTANCE_PORT_KEY)));
            nacosServiceNameMap.remove(taskDO.getTaskId());
            break;
        default:
            break;
    }
}

Source File: NodeDiscovery.java From curator-extensions with Apache License 2.0

6 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {
    String nodePath = null;
    T nodeData = null;
    if (event.getData() != null) {
        nodePath = event.getData().getPath();
        nodeData = parseChildData(event.getData());
    }
    switch (event.getType()) {
        case CHILD_ADDED:
            addNode(nodePath, nodeData);
            break;

        case CHILD_REMOVED:
            removeNode(nodePath, nodeData);
            break;

        case CHILD_UPDATED:
            updateNode(nodePath, nodeData);
            break;
    }
}

Source File: ServiceCacheImpl.java From xian with Apache License 2.0

5 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
    boolean notifyListeners = false;
    ServiceInstance<T> serviceInstance = null;
    switch (event.getType()) {
        case CHILD_ADDED:
        case CHILD_UPDATED: {
            serviceInstance = addInstance(event.getData(), false);
            notifyListeners = true;
            break;
        }

        case CHILD_REMOVED: {
            serviceInstance = instances.remove(instanceIdFromData(event.getData()));
            notifyListeners = true;
            break;
        }
    }

    if (notifyListeners) {
        final ServiceInstance<T> fServiceInstance = serviceInstance;
        listenerContainer.forEach(
                new Function<ServiceCacheListener<T>, Void>() {
                    @Override
                    public Void apply(ServiceCacheListener<T> listener) {
                        listener.cacheChanged();
                        listener.cacheChanged(event, fServiceInstance);
                        return null;
                    }
                }
        );
    }
}

Source File: CuratorMaster.java From zookeeper-book-example with Apache License 2.0

5 votes

public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {
    if(event.getType() == PathChildrenCacheEvent.Type.CHILD_REMOVED) {
        /*
         * Obtain just the worker's name
         */
        try{
            getAbsentWorkerTasks(event.getData().getPath().replaceFirst("/workers/", ""));
        } catch (Exception e) {
            LOG.error("Exception while trying to re-assign tasks", e);
        }
    } 
}

Source File: CommandPathListener.java From Mycat2 with GNU General Public License v3.0

5 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
    switch (event.getType()) {
    case CHILD_ADDED:
        // 在发生节点添加的时候，则执行接收命令并执行
        // 1,首先检查
        String path = event.getData().getPath();
        String basePath = ZKUtils.getZKBasePath() + ZKHandler.ZK_NODE_PATH + "/";

        // 检查节点与当前的节点是否一致
        String node = path.substring(basePath.length());

        if (node.equals(ZkConfig.getInstance().getValue(ZkParamCfg.ZK_CFG_MYID))) {
            // 检查命令内容是否为
            if (ZKHandler.RELOAD_FROM_ZK.equals(new String(client.getData().forPath(path)))) {
                // 从服务器上下载最新的配制文件信息
                ZktoXmlMain.ZKLISTENER.notifly(ZkNofiflyCfg.ZK_NOTIFLY_LOAD_ALL.getKey());
                // 重新加载配制信息
                reload(path);
                // 完成之后，删除命令信息， 以供下次读取
                client.delete().forPath(event.getData().getPath());
                LOGGER.info("CommandPathListener path:" + path + " reload success");
            }
        }

        break;
    case CHILD_UPDATED:
        break;
    case CHILD_REMOVED:
        break;
    default:
        break;
    }

}

Source File: MigrateTaskWatch.java From Mycat2 with GNU General Public License v3.0

5 votes

@Override
public void childEvent(CuratorFramework curatorFramework,
                       PathChildrenCacheEvent event) throws Exception {
    switch (event.getType()) {
        case CHILD_ADDED:
            if (isTaskErrorOrSucess(event)) break;
            addOrUpdate(event);
            String path = event.getData().getPath() + "/_prepare";
            if (curatorFramework.checkExists().forPath(path) == null) {
                curatorFramework.create().creatingParentsIfNeeded().forPath(path);
            }
            ZKUtils.addChildPathCache(path, new SwitchPrepareListener());

            String commitPath = event.getData().getPath() + "/_commit";
            if (curatorFramework.checkExists().forPath(commitPath) == null) {
                curatorFramework.create().creatingParentsIfNeeded().forPath(commitPath);
            }
            ZKUtils.addChildPathCache(commitPath, new SwitchCommitListener());


            String cleanPath = event.getData().getPath() + "/_clean";
            if (curatorFramework.checkExists().forPath(cleanPath) == null) {
                curatorFramework.create().creatingParentsIfNeeded().forPath(cleanPath);
            }
            ZKUtils.addChildPathCache(cleanPath, new SwitchCleanListener());
            LOGGER.info("table CHILD_ADDED: " + event.getData().getPath());
            break;
        case CHILD_UPDATED:
            if (isTaskErrorOrSucess(event)) break;
            addOrUpdate(event);
            LOGGER.info("CHILD_UPDATED: " + event.getData().getPath());
            break;
        default:
            break;
    }
}

Source File: OfflineStatusListener.java From dble with GNU General Public License v2.0

5 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
    ChildData childData = event.getData();
    switch (event.getType()) {
        case CHILD_ADDED:
            break;
        case CHILD_UPDATED:
            break;
        case CHILD_REMOVED:
            deleteNode(childData);
            break;
        default:
            break;
    }
}

Source File: TenantRepository.java From vespa with Apache License 2.0

5 votes

private void childEvent(CuratorFramework framework, PathChildrenCacheEvent event) {
    switch (event.getType()) {
        case CHILD_ADDED:
        case CHILD_REMOVED:
            updateTenants();
            break;
    }
}

Source File: PathCacheExample.java From curator with Apache License 2.0

5 votes

private static void addListener(PathChildrenCache cache)
{
    // a PathChildrenCacheListener is optional. Here, it's used just to log changes
    PathChildrenCacheListener listener = new PathChildrenCacheListener()
    {
        @Override
        public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception
        {
            switch ( event.getType() )
            {
                case CHILD_ADDED:
                {
                    System.out.println("Node added: " + ZKPaths.getNodeFromPath(event.getData().getPath()));
                    break;
                }

                case CHILD_UPDATED:
                {
                    System.out.println("Node changed: " + ZKPaths.getNodeFromPath(event.getData().getPath()));
                    break;
                }

                case CHILD_REMOVED:
                {
                    System.out.println("Node removed: " + ZKPaths.getNodeFromPath(event.getData().getPath()));
                    break;
                }
            }
        }
    };
    cache.getListenable().addListener(listener);
}

Source File: EventHelper.java From niubi-job with Apache License 2.0

4 votes

static boolean isChildUpdateEvent(PathChildrenCacheEvent event) {
    return event != null && event.getType() == PathChildrenCacheEvent.Type.CHILD_UPDATED;
}

Source File: EventHelper.java From niubi-job with Apache License 2.0

4 votes

static boolean isChildRemoveEvent(PathChildrenCacheEvent event) {
    return event != null && event.getType() == PathChildrenCacheEvent.Type.CHILD_REMOVED;
}

Source File: ConsumerNodeChangeListener.java From sofa-dashboard with Apache License 2.0

4 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {

    // 解决自动重连情况下出现的空指针问题
    ChildData data = event.getData();
    if (data == null) {
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("event type : {}", event.getType());
        }
        return;
    }

    final String path = data.getPath();

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("consumer : {}", path);
    }

    switch (event.getType()) {

        case CHILD_ADDED:

            String addConsumerData = StringUtil.substringAfterLast(path, "/");
            String addServiceName = StringUtil.substringBetween(path, "/sofa-rpc/",
                "/consumers/");

            List<RpcConsumer> addConsumers = new ArrayList<>();
            addConsumers.add(convert2Consumer(addServiceName, addConsumerData));
            registryDataCache.addConsumers(addServiceName, addConsumers);
            break;
        case CHILD_REMOVED:

            String removeConsumerData = StringUtil.substringAfterLast(path, "/");
            String removeServiceName = StringUtil.substringBetween(path, "/sofa-rpc/",
                "/consumers/");

            List<RpcConsumer> removeConsumers = new ArrayList<>();
            removeConsumers.add(convert2Consumer(removeServiceName, removeConsumerData));
            registryDataCache.removeConsumers(removeServiceName, removeConsumers);

            break;
        case CHILD_UPDATED:

            String updateConsumerData = StringUtil.substringAfterLast(path, "/");
            String updateServiceName = StringUtil.substringBetween(path, "/sofa-rpc/",
                "/consumers/");

            List<RpcConsumer> updateConsumers = new ArrayList<>();
            updateConsumers.add(convert2Consumer(updateServiceName, updateConsumerData));
            registryDataCache.updateConsumers(updateServiceName, updateConsumers);
            break;

        default:
            break;
    }

}

Java Code Examples for org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent#getType()