How to use

ZkConnection

in

info.xiancloud.zookeeper

  @Override
  public void destroy() {
    close();
  }
}

public static void start() {
  start(getZkConnStr());
}

  @Test
  public void setDataWithVersionTest() throws Exception {
    ZkConnection.start();
    try {
      /*ZkConnection.client.create().creatingParentsIfNeeded().forPath("/YY/11");*/
      ZkConnection.client.setData().withVersion(-1).forPath("/YY/11", "ss".getBytes());
    } finally {
      ZkConnection.close();
    }
  }
}

@Override
public void init() {
  start();
}

@Override
public Properties getAll(String pluginName) {
  Properties properties = new Properties();
  if (!ZkConnection.isConnected()) {
    return properties;
  }
  for (ChildData childData : resCaches.getUnchecked(pluginName).getCurrentData()) {
    properties.put(childData.getPath().substring(childData.getPath().lastIndexOf("/") + 1), new String(childData.getData()));
  }
  return properties;
}

@Override
public void execute(UnitRequest msg, Handler<UnitResponse> handler) throws Exception {
  /**
   * 请设置此变量来删除指定路径下的脏节点
   */
  final String PATH = msg.get("basePath", "/xian_runtime_dev/unit");
  try {
    ZkConnection.start();
    for (String s : ZkConnection.client.getChildren().forPath(PATH)) {
      String fullPath = PATH.concat("/").concat(s);
      String data = new String(ZkConnection.client.getData().forPath(fullPath));
      System.out.println(data);
      if (StringUtil.isEmpty(data)) {
        LOG.debug("实现原理是xian服务注册会在unit和group节点data上写入其定义数据，如果没有定义数据的，那么一定是脏节点");
        ZkConnection.client.delete().forPath(fullPath);
      }
    }
  } finally {
    ZkConnection.close();
  }
  handler.handle(UnitResponse.createSuccess());
}

@Override
public String get(String pluginName, String key) {
  if (!ZkConnection.isConnected()) {
    return null;
  }
  ChildData childData = resCaches.getUnchecked(pluginName).getCurrentData(fullPath(pluginName + "/" + key));
  if (childData == null) return null;
  return new String(childData.getData());
}

@Override
public String getVersion(String pluginName) {
  if (!ZkConnection.isConnected()) {
    return null;
  }
  LOG.debug("注意：查询版本号操作是实时查询zk，没有做缓存，不允许高频操作：" + pluginName);
  try {
    byte[] versionData = ZkConnection.client.getData().forPath(fullPath(pluginName));
    LOG.debug("if path exits but no data found, then empty byte array is returned. Thus here we need a empty array checking.");
    ResPluginDataBean resPluginDataBean = Reflection.toType(new String(versionData), ResPluginDataBean.class);
    if (resPluginDataBean != null)
      return resPluginDataBean.getVersion();
    return null;
  } catch (KeeperException.NoNodeException notExists) {
    return null;
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}