org.apache.curator.framework.recipes.cache.ChildData#getData

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

6 votes

/**
 * update the meta if the view updated
 */
private void createOrUpdateViewMeta(ChildData childData, boolean isReplace) throws Exception {
    String path = childData.getPath();
    String[] paths = path.split("/");
    String jsonValue = new String(childData.getData(), StandardCharsets.UTF_8);
    JSONObject obj = (JSONObject) JSONObject.parse(jsonValue);

    //if the view is create or replace by this server it self
    String serverId = obj.getString(SERVER_ID);
    if (serverId.equals(ZkConfig.getInstance().getValue(ClusterParamCfg.CLUSTER_CFG_MYID))) {
        return;
    }
    String createSql = obj.getString(CREATE_SQL);
    String schema = paths[paths.length - 1].split(SCHEMA_VIEW_SPLIT)[0];

    ViewMeta vm = new ViewMeta(schema, createSql, ProxyMeta.getInstance().getTmManager());
    vm.init(isReplace);
    vm.addMeta(false);

}

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

6 votes

private void lockTableByNewNode(ChildData childData) throws Exception {
    String data = new String(childData.getData(), StandardCharsets.UTF_8);
    LOGGER.info("DDL node " + childData.getPath() + " created , and data is " + data);
    DDLInfo ddlInfo = new DDLInfo(data);
    final String fromNode = ddlInfo.getFrom();
    if (fromNode.equals(ZkConfig.getInstance().getValue(ClusterParamCfg.CLUSTER_CFG_MYID))) {
        return; //self node
    }
    if (DDLStatus.INIT != ddlInfo.getStatus()) {
        return;
    }
    String nodeName = childData.getPath().substring(childData.getPath().lastIndexOf("/") + 1);
    String[] tableInfo = nodeName.split("\\.");
    final String schema = StringUtil.removeBackQuote(tableInfo[0]);
    final String table = StringUtil.removeBackQuote(tableInfo[1]);
    ClusterDelayProvider.delayBeforeUpdateMeta();
    try {
        ProxyMeta.getInstance().getTmManager().addMetaLock(schema, table, ddlInfo.getSql());
    } catch (Exception t) {
        ProxyMeta.getInstance().getTmManager().removeMetaLock(schema, table);
        throw t;
    }
}

Source File: ZKDelegationTokenSecretManager.java From big-c with Apache License 2.0

6 votes

private void processTokenAddOrUpdate(ChildData data) throws IOException {
  ByteArrayInputStream bin = new ByteArrayInputStream(data.getData());
  DataInputStream din = new DataInputStream(bin);
  TokenIdent ident = createIdentifier();
  ident.readFields(din);
  long renewDate = din.readLong();
  int pwdLen = din.readInt();
  byte[] password = new byte[pwdLen];
  int numRead = din.read(password, 0, pwdLen);
  if (numRead > -1) {
    DelegationTokenInformation tokenInfo =
        new DelegationTokenInformation(renewDate, password);
    synchronized (this) {
      currentTokens.put(ident, tokenInfo);
      // The cancel task might be waiting
      notifyAll();
    }
  }
}

Source File: MonitorService.java From shardingsphere-elasticjob-lite with Apache License 2.0

6 votes

private void dumpDirectly(final String path, final List<String> result) {
    for (String each : regCenter.getChildrenKeys(path)) {
        String zkPath = path + "/" + each;
        String zkValue = regCenter.get(zkPath);
        if (null == zkValue) {
            zkValue = "";
        }
        TreeCache treeCache = (TreeCache) regCenter.getRawCache("/" + jobName);
        ChildData treeCacheData = treeCache.getCurrentData(zkPath);
        String treeCachePath = null == treeCacheData ? "" : treeCacheData.getPath();
        String treeCacheValue = null == treeCacheData ? "" : new String(treeCacheData.getData());
        if (zkValue.equals(treeCacheValue) && zkPath.equals(treeCachePath)) {
            result.add(Joiner.on(" | ").join(zkPath, zkValue));
        } else {
            result.add(Joiner.on(" | ").join(zkPath, zkValue, treeCachePath, treeCacheValue));
        }
        dumpDirectly(zkPath, result);
    }
}

Source File: ZkServiceDiscover.java From redant with Apache License 2.0

5 votes

@Override
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
    ChildData data = event.getData();
    if(data==null || data.getData()==null){
        return;
    }
    Node node = Node.parse(JSON.parseObject(data.getData(),JSONObject.class));
    if(node ==null){
        LOGGER.error("get a null slave with eventType={},path={},data={}",event.getType(),data.getPath(),data.getData());
    }else {
        switch (event.getType()) {
            case CHILD_ADDED:
                nodeMap.put(node.getId(), node);
                LOGGER.info("CHILD_ADDED with path={},data={},current slave size={}", data.getPath(), new String(data.getData(),CharsetUtil.UTF_8), nodeMap.size());
                break;
            case CHILD_REMOVED:
                nodeMap.remove(node.getId());
                LOGGER.info("CHILD_REMOVED with path={},data={},current slave size={}", data.getPath(), new String(data.getData(),CharsetUtil.UTF_8), nodeMap.size());
                break;
            case CHILD_UPDATED:
                nodeMap.replace(node.getId(), node);
                LOGGER.info("CHILD_UPDATED with path={},data={},current slave size={}", data.getPath(), new String(data.getData(),CharsetUtil.UTF_8), nodeMap.size());
                break;
            default:
                break;
        }
    }
}

Source File: ZKDelegationTokenSecretManager.java From hadoop with Apache License 2.0

5 votes

private void processTokenRemoved(ChildData data) throws IOException {
  ByteArrayInputStream bin = new ByteArrayInputStream(data.getData());
  DataInputStream din = new DataInputStream(bin);
  TokenIdent ident = createIdentifier();
  ident.readFields(din);
  synchronized (this) {
    currentTokens.remove(ident);
    // The cancel task might be waiting
    notifyAll();
  }
}

Source File: PollingZooKeeperConfigurationProvider.java From pulsar with Apache License 2.0

5 votes

private void refreshConfiguration() throws IOException {
    LOGGER.info("Refreshing configuration from ZooKeeper");
    byte[] data = null;
    ChildData childData = agentNodeCache.getCurrentData();
    if (childData != null) {
        data = childData.getData();
    }
    flumeConfiguration = configFromBytes(data);
    eventBus.post(getConfiguration());
}

Source File: TSOClient.java From phoenix-omid with Apache License 2.0

5 votes

private String getCurrentTSOInfoFoundInZK(String currentTsoPath) {
    ChildData currentTSOData = currentTSOZNode.getCurrentData();
    if (currentTSOData == null) {
        throw new IllegalStateException("No data found in ZKNode " + currentTsoPath);
    }
    byte[] currentTSOAndEpochAsBytes = currentTSOData.getData();
    if (currentTSOAndEpochAsBytes == null) {
        throw new IllegalStateException("No data found for current TSO in ZKNode " + currentTsoPath);
    }
    return new String(currentTSOAndEpochAsBytes, Charsets.UTF_8);
}

Source File: ZookeeperRegistryCenter.java From shardingsphere-elasticjob-lite with Apache License 2.0

5 votes

@Override
public String get(final String key) {
    TreeCache cache = findTreeCache(key);
    if (null == cache) {
        return getDirectly(key);
    }
    ChildData resultInCache = cache.getCurrentData(key);
    if (null != resultInCache) {
        return null == resultInCache.getData() ? null : new String(resultInCache.getData(), Charsets.UTF_8);
    }
    return getDirectly(key);
}

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

5 votes

private void updateStatus(ChildData childData) {
    try {
        if (DbleServer.getInstance().isUseOuterHa()) {
            String nodeName = childData.getPath().substring(childData.getPath().lastIndexOf("/") + 1);
            String data = new String(childData.getData(), StandardCharsets.UTF_8);
            int id = HaConfigManager.getInstance().haStart(HaInfo.HaStage.RESPONSE_NOTIFY, HaInfo.HaStartType.CLUSTER_NOTIFY, "");
            PhysicalDataHost physicalDBPool = DbleServer.getInstance().getConfig().getDataHosts().get(nodeName);
            PhysicalDataHost dataHost = (PhysicalDataHost) physicalDBPool;
            dataHost.changeIntoLatestStatus(data);
            HaConfigManager.getInstance().haFinish(id, null, data);
        }
    } catch (Exception e) {
        LOGGER.warn("get Error when update Ha status", e);
    }
}

Source File: CuratorClientService.java From knox with Apache License 2.0

5 votes

@Override
public void nodeChanged() throws Exception {
    String path = null;
    byte[] data = null;

    ChildData cd = nodeCache.getCurrentData();
    if (cd != null) {
        path = cd.getPath();
        data = cd.getData();
    }

    if (path != null) {
        delegate.entryChanged(client, path, data);
    }
}

Source File: ZookeeperDataSource.java From Sentinel with Apache License 2.0

5 votes

@Override
public String readSource() throws Exception {
    if (this.zkClient == null) {
        throw new IllegalStateException("Zookeeper has not been initialized or error occurred");
    }
    String configInfo = null;
    ChildData childData = nodeCache.getCurrentData();
    if (null != childData && childData.getData() != null) {

        configInfo = new String(childData.getData());
    }
    return configInfo;
}

Source File: ZooKeeperScanPolicyObserver.java From hbase with Apache License 2.0

5 votes

private OptionalLong getExpireBefore() {
  ChildData data = cache.getCurrentData();
  if (data == null) {
    return OptionalLong.empty();
  }
  byte[] bytes = data.getData();
  if (bytes == null || bytes.length != Long.BYTES) {
    return OptionalLong.empty();
  }
  return OptionalLong.of(Bytes.toLong(bytes));
}

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

5 votes

public static boolean isServiceNode(ChildData zNode) {
    String path = zNode.getPath();
    LOG.debug("正在检查节点路径:   " + path);
    LOG.debug("服务注册路径：   " + getNodeBasePath());
    if (!path.startsWith(getNodeBasePath()) || path.equals(getNodeBasePath())) {
        return false;
    }
    String name = path.substring((getNodeBasePath() + "/").length());
    String[] names = name.split("/");
    if (names.length != 2) {
        return false;
    }
    /*if (!SystemEnum.isServiceNodeName(names[0])) {
        todo 由于去掉了systemEnum类，我们在watch到zk外部服务注册事件之前，根本不知道到底有哪些application
        return false;
    }*/
    String zNodeDataStr = new String(zNode.getData());
    JSONObject zNodeData;
    try {
        zNodeData = JSON.parseObject(zNodeDataStr);
    } catch (JSONException notJsonString) {
        LOG.debug(String.format("节点%s的data是%s，它不是我们要找的那个服务节点，排除掉！  这是我期待结果之一，不打印堆栈", path, zNodeDataStr));
        return false;
    }
    try {
        if (zNodeData.getJSONObject("payload") == null) {
            LOG.debug(String.format("节点=%s，内容=%s，其内缺少payload属性，它不是我们预期的服务节点！", path, zNodeDataStr));
            return false;
        }
    } catch (JSONException payloadIsNotJsonString) {
        LOG.info(String.format("节点%s的data=%s,其内的payload属性是不是json格式，肯定是有非预期的节点混入，这里排除之", path, zNodeDataStr));
        return false;
    }
    return true;
}

Source File: ZKDelegationTokenSecretManager.java From big-c with Apache License 2.0

5 votes

private void processTokenRemoved(ChildData data) throws IOException {
  ByteArrayInputStream bin = new ByteArrayInputStream(data.getData());
  DataInputStream din = new DataInputStream(bin);
  TokenIdent ident = createIdentifier();
  ident.readFields(din);
  synchronized (this) {
    currentTokens.remove(ident);
    // The cancel task might be waiting
    notifyAll();
  }
}

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

4 votes

public AbstractGenericData(ChildData childData) {
    this(childData.getPath(), childData.getData());
}

Source File: ZooKeeperLeaderElectionService.java From flink with Apache License 2.0

4 votes

@Override
public void nodeChanged() throws Exception {
	try {
		// leaderSessionID is null if the leader contender has not yet confirmed the session ID
		if (leaderLatch.hasLeadership()) {
			synchronized (lock) {
				if (running) {
					if (LOG.isDebugEnabled()) {
						LOG.debug(
							"Leader node changed while {} is the leader with session ID {}.",
							leaderContender.getAddress(),
							confirmedLeaderSessionID);
					}

					if (confirmedLeaderSessionID != null) {
						ChildData childData = cache.getCurrentData();

						if (childData == null) {
							if (LOG.isDebugEnabled()) {
								LOG.debug(
									"Writing leader information into empty node by {}.",
									leaderContender.getAddress());
							}
							writeLeaderInformation(confirmedLeaderSessionID);
						} else {
							byte[] data = childData.getData();

							if (data == null || data.length == 0) {
								// the data field seems to be empty, rewrite information
								if (LOG.isDebugEnabled()) {
									LOG.debug(
										"Writing leader information into node with empty data field by {}.",
										leaderContender.getAddress());
								}
								writeLeaderInformation(confirmedLeaderSessionID);
							} else {
								ByteArrayInputStream bais = new ByteArrayInputStream(data);
								ObjectInputStream ois = new ObjectInputStream(bais);

								String leaderAddress = ois.readUTF();
								UUID leaderSessionID = (UUID) ois.readObject();

								if (!leaderAddress.equals(this.leaderContender.getAddress()) ||
									(leaderSessionID == null || !leaderSessionID.equals(confirmedLeaderSessionID))) {
									// the data field does not correspond to the expected leader information
									if (LOG.isDebugEnabled()) {
										LOG.debug(
											"Correcting leader information by {}.",
											leaderContender.getAddress());
									}
									writeLeaderInformation(confirmedLeaderSessionID);
								}
							}
						}
					}
				} else {
					LOG.debug("Ignoring node change notification since the service has already been stopped.");
				}
			}
		}
	} catch (Exception e) {
		leaderContender.handleError(new Exception("Could not handle node changed event.", e));
		throw e;
	}
}

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

4 votes

private void deleteNode(ChildData childData) {
    String data = new String(childData.getData(), StandardCharsets.UTF_8);
    DDLInfo ddlInfo = new DDLInfo(data);
    LOGGER.info("DDL node " + childData.getPath() + " removed , and DDL info is " + ddlInfo.toString());
}

Source File: ZooKeeperLeaderElectionService.java From Flink-CEPplus with Apache License 2.0

4 votes

@Override
public void nodeChanged() throws Exception {
	try {
		// leaderSessionID is null if the leader contender has not yet confirmed the session ID
		if (leaderLatch.hasLeadership()) {
			synchronized (lock) {
				if (running) {
					if (LOG.isDebugEnabled()) {
						LOG.debug(
							"Leader node changed while {} is the leader with session ID {}.",
							leaderContender.getAddress(),
							confirmedLeaderSessionID);
					}

					if (confirmedLeaderSessionID != null) {
						ChildData childData = cache.getCurrentData();

						if (childData == null) {
							if (LOG.isDebugEnabled()) {
								LOG.debug(
									"Writing leader information into empty node by {}.",
									leaderContender.getAddress());
							}
							writeLeaderInformation(confirmedLeaderSessionID);
						} else {
							byte[] data = childData.getData();

							if (data == null || data.length == 0) {
								// the data field seems to be empty, rewrite information
								if (LOG.isDebugEnabled()) {
									LOG.debug(
										"Writing leader information into node with empty data field by {}.",
										leaderContender.getAddress());
								}
								writeLeaderInformation(confirmedLeaderSessionID);
							} else {
								ByteArrayInputStream bais = new ByteArrayInputStream(data);
								ObjectInputStream ois = new ObjectInputStream(bais);

								String leaderAddress = ois.readUTF();
								UUID leaderSessionID = (UUID) ois.readObject();

								if (!leaderAddress.equals(this.leaderContender.getAddress()) ||
									(leaderSessionID == null || !leaderSessionID.equals(confirmedLeaderSessionID))) {
									// the data field does not correspond to the expected leader information
									if (LOG.isDebugEnabled()) {
										LOG.debug(
											"Correcting leader information by {}.",
											leaderContender.getAddress());
									}
									writeLeaderInformation(confirmedLeaderSessionID);
								}
							}
						}
					}
				} else {
					LOG.debug("Ignoring node change notification since the service has already been stopped.");
				}
			}
		}
	} catch (Exception e) {
		leaderContender.handleError(new Exception("Could not handle node changed event.", e));
		throw e;
	}
}

Source File: ZKRegistry.java From joyrpc with Apache License 2.0

3 votes

/**
 * 添加事件
 *
 * @param events    事件集合
 * @param type      事件类型
 * @param childData 节点数据
 */
protected void addEvent(final List<ShardEvent> events, final ShardEventType type, final ChildData childData) {
    byte[] data = childData.getData();
    if (data != null) {
        events.add(new ShardEvent(new DefaultShard(URL.valueOf(new String(data, UTF_8))), type));
    }
}

Java Code Examples for org.apache.curator.framework.recipes.cache.ChildData#getData()