/**
* @Description: 初始化
*
* @throws IOException
* @throws InterruptedException
* @return void
* @author liaoqiqi
* @date 2013-6-14
*/
private void initInternal(String hosts, String defaultPrefixString)
throws IOException, InterruptedException {
store = new ResilientActiveKeyValueStore();
store.connect(hosts);
LOGGER.info("zoo prefix: " + defaultPrefixString);
// 新建父目录
makeDir(defaultPrefixString, ZooUtils.getIp());
}
/**
* Zoo的新建目录
*
* @param dir
*/
public void makeDir(String dir, String data) {
try {
boolean deafult_path_exist = store.exists(dir);
if (!deafult_path_exist) {
LOGGER.info("create: " + dir);
this.writePersistentUrl(dir, data);
} else {
}
} catch (KeeperException e) {
LOGGER.error("cannot create path: " + dir, e);
} catch (Exception e) {
LOGGER.error("cannot create path: " + dir, e);
}
}
/**
* @Description: 带状态信息的读取数据
*
* @param path
* @param watcher
* @param stat
* @return
* @throws InterruptedException
* @throws KeeperException
* @return String
* @author liaoqiqi
* @date 2013-6-17
*/
public String read(String path, Watcher watcher, Stat stat)
throws InterruptedException, KeeperException {
return store.read(path, watcher, stat);
}
/**
* @Description: 删除结点
*
* @param path
* @return void
* @author liaoqiqi
* @date 2013-6-17
*/
public void deleteNode(String path) {
store.deleteNode(path);
}
/*
* 路径是否存在
*/
public boolean exists(String path) throws Exception {
return store.exists(path);
}
/*
* 生成一个临时结点
*/
public String createEphemeralNode(String path, String value, CreateMode createMode)
throws Exception {
return store.createEphemeralNode(path, value, createMode);
}
/*
* 返回zk
*/
public ZooKeeper getZk() {
return store.getZk();
}
/**
* @Description: 读结点数据
*
* @return
* @return List<String>
* @author liaoqiqi
* @date 2013-6-14
*/
public String readUrl(String url, Watcher watcher) throws Exception {
return store.read(url, watcher, null);
}
/**
* @Description: 写持久化结点,没有则新建,存在则进行更新
*
* @return
* @return List<String>
* @author liaoqiqi
* @date 2013-6-14
*/
public void writePersistentUrl(String url, String value) throws Exception {
store.write(url, value);
}
/**
* @Description: 获取子孩子 列表
*
* @return
* @return List<String>
* @author liaoqiqi
* @date 2013-6-14
*/
public List<String> getRootChildren() {
return store.getRootChildren();
}
/**
* @Description: 应用程序必须调用它来释放zookeeper资源
*
* @return void
* @author liaoqiqi
* @date 2013-6-14
*/
public void release() throws InterruptedException {
store.close();
}