com.asuraiv.coordination.util.ZooKeeperUtils.java Source code

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Here is the source code for com.asuraiv.coordination.util.ZooKeeperUtils.java

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/*
 * @(#)ZooKeeperUtils.java $version 2016. 1. 5.
 *
 * Copyright 2007 NHN Corp. All rights Reserved. 
 * NHN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.asuraiv.coordination.util;

import java.util.List;

import org.apache.zookeeper.AsyncCallback;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.AsyncCallback.StringCallback;
import org.apache.zookeeper.data.ACL;
import org.apache.zookeeper.data.Stat;

/**
 * @author Jupyo Hong
 */
public class ZooKeeperUtils {

    private ZooKeeper zk;

    public ZooKeeperUtils(ZooKeeper zk) {
        this.zk = zk;
    }

    public List<String> getChildren(String path) {
        return getChildren(path, false, null);
    }

    /**
     * @param path
     * @param b
     * @param object
     * @return
     */
    public List<String> getChildren(String path, boolean watch, Stat stat) {
        try {
            return zk.getChildren(path, watch, stat);
        } catch (KeeperException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * @param string
     * @return
     */
    public String getData(String path) {
        try {
            return new String(zk.getData(path, false, null));
        } catch (KeeperException e) {
            if (e.getMessage().contains("NoNode")) {
                System.err.println(e.getMessage());
            } else {
                e.printStackTrace();
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * @param string
     * @param b
     * @param master
     * @param ctx
     */
    public void asyncGetChildren(String path, boolean watch, AsyncCallback.ChildrenCallback callback, Object ctx) {
        zk.getChildren(path, watch, callback, ctx);
    }

    public void setData(String path, String data) {
        try {
            zk.setData(path, data.getBytes(), -1);
        } catch (KeeperException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public String create(String path, byte data[], List<ACL> acl, CreateMode createMode) {
        try {
            return zk.create(path, data, acl, createMode);
        } catch (KeeperException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return null;
    }

    public void asyncCreate(String path, byte data[], List<ACL> acl, CreateMode createMode, StringCallback cb,
            Object ctx) {
        zk.create(path, data, acl, createMode, cb, ctx);
    }

    public void delete(String path) {
        try {
            zk.delete(path, -1);
        } catch (InterruptedException e) {
            e.printStackTrace();
        } catch (KeeperException e) {
            e.printStackTrace();
        }
    }
}