本文整理了Java中org.apache.helix.manager.zk.zookeeper.ZkClient类的一些代码示例，展示了ZkClient类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ZkClient类的具体详情如下：
包路径：org.apache.helix.manager.zk.zookeeper.ZkClient
类名称：ZkClient

ZkClient介绍

[英]Abstracts the interaction with zookeeper and allows permanent (not just one time) watches on nodes in ZooKeeper. WARN: Do not use this class directly, use org.apache.helix.manager.zk.ZkClient instead.
[中]抽象与zookeeper的交互，并允许在zookeeper中的节点上进行永久（而不仅仅是一次）监视。警告：不要直接使用此类，请使用org。阿帕奇。螺旋。经理zk。而不是我的客户。

代码示例

代码示例来源：origin: apache/helix

public Stat writeDataReturnStat(final String path, Object datat, final int expectedVersion) {
 long startT = System.currentTimeMillis();
 try {
  final byte[] data = serialize(datat, path);
  checkDataSizeLimit(data);
  final Stat stat = (Stat) retryUntilConnected(new Callable<Object>() {
   @Override public Object call() throws Exception {
    return getConnection().writeDataReturnStat(path, data, expectedVersion);
   }
  });
  record(path, data, startT, ZkClientMonitor.AccessType.WRITE);
  return stat;
 } catch (Exception e) {
  recordFailure(path, ZkClientMonitor.AccessType.WRITE);
  throw e;
 } finally {
  long endT = System.currentTimeMillis();
  if (LOG.isTraceEnabled()) {
   LOG.trace("setData, path: " + path + ", time: " + (endT - startT) + " ms");
  }
 }
}

代码示例来源：origin: apache/helix

/**
 * Create an ephemeral node.
 *
 * @param path
 * @throws ZkInterruptedException
 *             if operation was interrupted, or a required reconnection got interrupted
 * @throws IllegalArgumentException
 *             if called from anything except the ZooKeeper event thread
 * @throws ZkException
 *             if any ZooKeeper exception occurred
 * @throws RuntimeException
 *             if any other exception occurs
 */
public void createEphemeral(final String path)
  throws ZkInterruptedException, IllegalArgumentException, ZkException, RuntimeException {
 create(path, null, CreateMode.EPHEMERAL);
}

代码示例来源：origin: org.apache.helix/helix-core

/**
 * Create a persistent node.
 *
 * @param path
 * @throws ZkInterruptedException
 *             if operation was interrupted, or a required reconnection got interrupted
 * @throws IllegalArgumentException
 *             if called from anything except the ZooKeeper event thread
 * @throws ZkException
 *             if any ZooKeeper exception occurred
 * @throws RuntimeException
 *             if any other exception occurs
 */
public void createPersistent(String path)
  throws ZkInterruptedException, IllegalArgumentException, ZkException, RuntimeException {
 createPersistent(path, false);
}

代码示例来源：origin: apache/helix

if (isClosed()) {
 throw new IllegalStateException("ZkClient already closed!");
acquireEventLock();
try {
 setShutdownTrigger(false);
 IZkConnection zkConnection = getConnection();
 _eventThread = new ZkEventThread(zkConnection.getServers());
 _eventThread.start();
 if (isManagingZkConnection()) {
  zkConnection.connect(watcher);
  LOG.debug("Awaiting connection to Zookeeper server");
  if (!waitUntilConnected(maxMsToWaitUntilConnected, TimeUnit.MILLISECONDS)) {
   throw new ZkTimeoutException(
     "Unable to connect to zookeeper server within timeout: " + maxMsToWaitUntilConnected);
  if (isConnectionClosed()) {
   throw new HelixException(
     "Unable to connect to zookeeper server with the specified ZkConnection");
  setCurrentState(KeeperState.SyncConnected);
 getEventLock().unlock();
  close();

代码示例来源：origin: apache/helix

getEventLock().lock();
try {
 if (getShutdownTrigger()) {
  if (LOG.isDebugEnabled()) {
   LOG.debug("ignoring event '{" + event.getType() + " | " + event.getPath()
  processStateChanged(event);
  processDataOrChildChange(event);
  getEventLock().getStateChangedCondition().signalAll();
   getEventLock().getZNodeEventCondition().signalAll();
   getEventLock().getDataChangedCondition().signalAll();
   fireAllEvents();
  getEventLock().getZNodeEventCondition().signalAll();
  getEventLock().getDataChangedCondition().signalAll();
 getEventLock().unlock();
 recordStateChange(stateChanged, dataChanged);

代码示例来源：origin: apache/helix

LOG.trace("closing a zkclient. callStack: " + Arrays.asList(calls));
getEventLock().lock();
IZkConnection connection = getConnection();
try {
 if (connection == null || _closed) {
  return;
 setShutdownTrigger(true);
 _eventThread.interrupt();
 _eventThread.join(2000);
 if (isManagingZkConnection()) {
  LOG.info("Closing zkclient: " + ((ZkConnection) connection).getZookeeper());
  connection.close();
 setCurrentState(null);
 getEventLock().getStateChangedCondition().signalAll();
   if (isManagingZkConnection()) {
    connection.close();
 getEventLock().unlock();
 if (_monitor != null) {
  _monitor.unregister();

代码示例来源：origin: apache/helix

@Override public Object call() throws Exception {
  getConnection().exists(path, true);
  return null;
 }
});

代码示例来源：origin: org.apache.helix/helix-core

acquireEventLock();
try {
 setShutdownTrigger(false);
 _eventThread = new ZkEventThread(_connection.getServers());
 _eventThread.start();
 if (!waitUntilConnected(maxMsToWaitUntilConnected, TimeUnit.MILLISECONDS)) {
  throw new ZkTimeoutException(
    "Unable to connect to zookeeper server within timeout: " + maxMsToWaitUntilConnected);
 getEventLock().unlock();
  close();

代码示例来源：origin: apache/helix

public long getCreationTime(String path) {
 acquireEventLock();
 try {
  return getConnection().getCreateTime(path);
 } catch (KeeperException e) {
  throw ZkException.create(e);
 } catch (InterruptedException e) {
  throw new ZkInterruptedException(e);
 } finally {
  getEventLock().unlock();
 }
}

代码示例来源：origin: org.apache.helix/helix-core

public boolean waitUntilExists(String path, TimeUnit timeUnit, long time)
  throws ZkInterruptedException {
 Date timeout = new Date(System.currentTimeMillis() + timeUnit.toMillis(time));
 if (LOG.isDebugEnabled()) {
  LOG.debug("Waiting until znode '" + path + "' becomes available.");
 }
 if (exists(path)) {
  return true;
 }
 acquireEventLock();
 try {
  while (!exists(path, true)) {
   boolean gotSignal = getEventLock().getZNodeEventCondition().awaitUntil(timeout);
   if (!gotSignal) {
    return false;
   }
  }
  return true;
 } catch (InterruptedException e) {
  throw new ZkInterruptedException(e);
 } finally {
  getEventLock().unlock();
 }
}

代码示例来源：origin: apache/helix

private void reconnect() {
 getEventLock().lock();
 try {
  ZkConnection connection = ((ZkConnection) getConnection());
  connection.reconnect(this);
 } catch (InterruptedException e) {
  throw new ZkInterruptedException(e);
 } finally {
  getEventLock().unlock();
 }
}

代码示例来源：origin: apache/helix

public void setCurrentState(KeeperState currentState) {
 getEventLock().lock();
 try {
  _currentState = currentState;
 } finally {
  getEventLock().unlock();
 }
}

代码示例来源：origin: org.apache.helix/helix-core

public boolean waitForKeeperState(KeeperState keeperState, long time, TimeUnit timeUnit)
  throws ZkInterruptedException {
 if (_zookeeperEventThread != null && Thread.currentThread() == _zookeeperEventThread) {
  throw new IllegalArgumentException("Must not be done in the zookeeper event thread.");
 }
 Date timeout = new Date(System.currentTimeMillis() + timeUnit.toMillis(time));
 LOG.debug("Waiting for keeper state " + keeperState);
 acquireEventLock();
 try {
  boolean stillWaiting = true;
  while (_currentState != keeperState) {
   if (!stillWaiting) {
    return false;
   }
   stillWaiting = getEventLock().getStateChangedCondition().awaitUntil(timeout);
  }
  LOG.debug("State is " + (_currentState == null ? "CLOSED" : _currentState));
  return true;
 } catch (InterruptedException e) {
  throw new ZkInterruptedException(e);
 } finally {
  getEventLock().unlock();
 }
}

代码示例来源：origin: apache/helix

if (isClosed()) {
 throw new IllegalStateException("ZkClient already closed!");
 final ZkConnection zkConnection = (ZkConnection) getConnection();
 waitForRetry();
} catch (SessionExpiredException e) {
 waitForRetry();
} catch (KeeperException e) {
 throw ZkException.create(e);

代码示例来源：origin: org.apache.helix/helix-core

LOG.trace("closing a zkclient. callStack: " + Arrays.asList(calls));
getEventLock().lock();
try {
 if (_connection == null || _closed) {
 setShutdownTrigger(true);
 _eventThread.interrupt();
 _eventThread.join(2000);
 setCurrentState(null);
 getEventLock().getStateChangedCondition().signalAll();
 getEventLock().unlock();
 if (_monitor != null) {
  _monitor.unregister();

代码示例来源：origin: org.apache.helix/helix-core

/**
 * Delete the path as well as all its children.
 * @param path
 * @throws HelixException
 */
public void deleteRecursively(String path) throws HelixException {
 List<String> children;
 try {
  children = getChildren(path, false);
 } catch (ZkNoNodeException e) {
  // if the node to be deleted does not exist, treat it as success.
  return;
 }
 for (String subPath : children) {
  deleteRecursively(path + "/" + subPath);
 }
 // delete() function call will return true if successful, false if the path does not
 // exist (in this context, it should be treated as successful), and throw exception
 // if there is any other failure case.
 try {
  delete(path);
 } catch (Exception e) {
  LOG.error("Failed to delete " + path, e);
  throw new HelixException("Failed to delete " + path, e);
 }
}

代码示例来源：origin: org.apache.helix/helix-core

final ZkConnection zkConnection = (ZkConnection) getConnection();
 waitForRetry();
} catch (SessionExpiredException e) {
 waitForRetry();
} catch (KeeperException e) {
 throw ZkException.create(e);

代码示例来源：origin: apache/helix

throws ZkInterruptedException, IllegalArgumentException, ZkException, RuntimeException {
try {
 create(path, null, acl, CreateMode.PERSISTENT);
} catch (ZkNodeExistsException e) {
 if (!createParents) {
 createPersistent(parentDir, createParents, acl);
 createPersistent(path, createParents, acl);

代码示例来源：origin: apache/helix

/**
 * Delete the path as well as all its children.
 * This method is deprecated, please use {@link #deleteRecursively(String)}} instead
 * @param path ZK path
 * @return true if successfully deleted all children, and the given path, else false
 */
@Deprecated
public boolean deleteRecursive(String path) {
 try {
  deleteRecursively(path);
  return true;
 } catch (HelixException e) {
  LOG.error("Failed to recursively delete path " + path, e);
  return false;
 }
}

代码示例来源：origin: org.apache.helix/helix-core

protected ZkClient(IZkConnection zkConnection, int connectionTimeout, long operationRetryTimeout,
  PathBasedZkSerializer zkSerializer, String monitorType, String monitorKey,
  String monitorInstanceName, boolean monitorRootPathOnly) {
 if (zkConnection == null) {
  throw new NullPointerException("Zookeeper connection is null!");
 }
 _connection = zkConnection;
 _pathBasedZkSerializer = zkSerializer;
 _operationRetryTimeoutInMillis = operationRetryTimeout;
 connect(connectionTimeout, this);
 // initiate monitor
 try {
  if (monitorKey != null && !monitorKey.isEmpty() && monitorType != null && !monitorType
    .isEmpty()) {
   _monitor =
     new ZkClientMonitor(monitorType, monitorKey, monitorInstanceName, monitorRootPathOnly);
   _monitor.setZkEventThread(_eventThread);
  } else {
   LOG.info("ZkClient monitor key or type is not provided. Skip monitoring.");
  }
 } catch (JMException e) {
  LOG.error("Error in creating ZkClientMonitor", e);
 }
}