/**
 * @author 李乾坤
 * 进行volume的一系列操作，如创建、开启停止volume，为volume添加或删除brick
 */
package com.platform.http.gfs;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import net.sf.json.JSONArray;

import org.apache.log4j.Logger;

import com.base.MyException;
import com.base.PostData;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import com.platform.entities.FolderNode;
import com.platform.entities.VolumeDataEntity;
import com.platform.http.HttpUtils;
import com.platform.http.VolumeEntity;
import com.platform.utils.BeanCopy;

public class SetVolume {
	public static Logger log = Logger.getLogger(SetVolume.class);
	HttpUtils ht = new HttpUtils();

	/** 查询volume信息（包括其下目录）
	 * @return json字符串
	 */
	public String getAllvolume() {
		List<VolumeDataEntity> datas = new ArrayList<VolumeDataEntity>();
		try {
			datas = getAllvolumeEntity();
		} catch (Exception e) {
			log.error(e);
		}
		if (datas.size() == 0) {
			return "";
		}
		JSONArray jsonarr = JSONArray.fromObject(datas);
		return jsonarr.toString();
	}
	
	/** 查询volume信息（包括其下目录）
	 * @return json字符串
	 */
	public List<VolumeDataEntity> getAllvolumeEntity() throws Exception{
		List<VolumeDataEntity> volumeList = new ArrayList<VolumeDataEntity>();
		String rest = ht.sendPost("gfs/getAllVolume", null);
		if (null == rest || "".equals(rest)) {
			log.error(" ---    gluster is disconnect !   \n");
			return volumeList;
		}
//		JSONObject json = JSONObject.fromObject(rest);

		Gson gs = new Gson();
		PostData data = gs.fromJson(rest, (new PostData(new ArrayList<VolumeEntity>())).getClass());
		List<VolumeEntity> volumes = (List<VolumeEntity>) data.getData();
		if(null == volumes){
			log.error("-----gfs/getAllVolume-----   no volume ----");
			getExcept(data);
			return volumeList;
		}
		//解析 PostData
		if(volumes.size() > 0){
			JSONArray jsonarr = JSONArray.fromObject(data.getData());
			try {
				volumes = gs.fromJson(jsonarr.toString(), new TypeToken<List<VolumeEntity>>(){}.getType());
			} catch (Exception e) {
				log.error(e);
			}
		}
		for (VolumeEntity volumeEntity : volumes) {
			VolumeDataEntity entity = new VolumeDataEntity();
			BeanCopy.copyBean(volumeEntity, entity, "folder", "status");
			if (null != volumeEntity.getFolder()) {
				List<FolderNode> fn = new ArrayList<FolderNode>();
				fn.add(volumeEntity.getFolder());
				entity.setFolder(fn);
				if ("Started".equals(volumeEntity.getStatus())) {
					entity.setStatus(true);
				}
			}
			volumeList.add(entity);
		}
		getExcept(data);
		return volumeList;
	}
	
	/**
	 * 创建volume 返回值：创建并挂载成功 1 1:可以创建 ;-1：brick的ip不在集群中或者未连接; -2 -3
	 * -4:类型与brick数目不匹配 ; -5 :volumeName 已经存在；-6：挂载点存在且不为空，不能作为挂载点； -7：未知错误
	 * 
	 * @param volumeName
	 * @param count
	 * @param type
	 * @param bricks
	 * @param mountPoint
	 * @return
	 * @see [类、类#方法、类#成员]
	 */
	public int createVolume(String volumeName, int count, String type, List<String> bricks, String mountPoint)  throws Exception{
		int reslut = 0;
		log.info("Creat new volume " + volumeName);
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("volumeName", volumeName);
		map.put("count", count);
		map.put("type", type);
		map.put("bricks", bricks);
		map.put("mountPoint", mountPoint);
		//请求 gfs 的 web
		String rest = ht.sendPost("gfs/createVolume", map);
		if (null == rest || "".equals(rest)) {
			log.error(" ---    gluster is disconnect !   \n");
			return 0;
		}
		Gson gs = new Gson();
		PostData data = gs.fromJson(rest, PostData.class);
		
		// 1 : 成功
		double copyResult = (double) data.getData();
		reslut = (int) copyResult;
		getExcept(data);
		return reslut;
	}

	/**
	 * 删除volume 1 表示成功 ；-1表示volume name不存在；-2表示停止volume 失败；
	 * -3表示删除失败，-4表示/gfsAutoMount/mountPoint.record文件不存在
	 * @param volumeName
	 * @return
	 * @see [类、类#方法、类#成员]
	 */
	public int deleteVolume(String volumeName)  throws Exception{
		int reslut = 0;
		this.stopVolume(volumeName);
		try {
			Thread.sleep(500);
		} catch (Exception e) {
			log.info(e);
		}
		log.info("delete volume " + volumeName);
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("volumeName", volumeName);
		//请求web
		String rest = ht.sendPost("gfs/deleteVolume", map);
		if (null == rest || "".equals(rest)) {
			log.error(" ---    gluster is disconnect !   \n");
			return 0;
		}
		Gson gs = new Gson();
		PostData data = gs.fromJson(rest, PostData.class);
		// 1 : 成功
		double copyResult = (double) data.getData();
		reslut = (int) copyResult;
		getExcept(data);
		return reslut;
	}

	/**
	 * 为指定的volume添加brick,参数中需要指定类型、数量等 返回值：1成功 ;其他失败
	 * 过程中需要先检查volume是否存在，还需检查给出的brick数量与类型、count是否相符
	 * 
	 * @param volumeName
	 * @param brickName
	 * @param count
	 * @param type
	 * @return
	 * @see [类、类#方法、类#成员]
	 */
	public int addBrickVolume(String volumeName, List<String> brickName, int count, String type)  throws Exception{
		int reslut = 0;
		StringBuffer sb = new StringBuffer();
		for (String string : brickName) {
			sb.append(string).append(",");
		}
		log.info("addBrick Volume " + volumeName+" Brick "+ sb.toString());
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("volumeName", volumeName);
		map.put("bricks", brickName);
		//请求web
		String rest = ht.sendPost("gfs/addBricks", map);
		if (null == rest || "".equals(rest)) {
			log.error(" ---    gluster is disconnect !   \n");
			return 0;
		}
		Gson gs = new Gson();
		PostData data = gs.fromJson(rest, PostData.class);
		// 1 : 成功
		double copyResult = (double) data.getData();
		reslut = (int) copyResult;
		getExcept(data);
		return reslut;
	}

	/**
	 * 为指定的volume删除brick,参数中需要指定类型、数量等 返回值：1 成功 ;其他 失败
	 * 过程中需要先检查volume是否存在，还需检查给出的brick数量与类型、count是否相符
	 * 
	 * @param volumeName
	 * @param brickName
	 * @param count
	 * @param type
	 * @return
	 * @see [类、类#方法、类#成员]
	 */
	public int deleteBrickVolume(String volumeName, List<String> brickName, int count, String type) throws Exception {
		int reslut = 0;
		StringBuffer sb = new StringBuffer();
		for (String string : brickName) {
			sb.append(string).append(",");
		}
		log.info("deleteBrick Volume " + volumeName+" Brick "+ sb.toString());
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("volumeName", volumeName);
		map.put("bricks", brickName);
		//请求web
		String rest = ht.sendPost("gfs/deleteBrickForce", map);
		if (null == rest || "".equals(rest)) {
			log.error(" ---    gluster is disconnect !   \n");
			return 0;
		}
		Gson gs = new Gson();
		PostData data = gs.fromJson(rest, PostData.class);
		// 1 : 成功
		double copyResult = (double) data.getData();
		reslut = (int) copyResult;
		getExcept(data);
		return reslut;
	}

	/*
	 * 停止指定volume 参数中需给出volume的名字 返回值： 0 成功 -1 失败
	 * 需要先检查volume是否存在，然后判断volume的状态是否已经是停止状态
	 */
	public int stopVolume(String volumeName)  throws Exception{
		int reslut = 0;
		log.info("stop volume " + volumeName);
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("volumeName", volumeName);
		//请求web
		String rest = ht.sendPost("gfs/stopVolume", map);
		if (null == rest || "".equals(rest)) {
			log.error(" ---    gluster is disconnect !   \n");
			return 0;
		}
		Gson gs = new Gson();
		PostData data = gs.fromJson(rest, PostData.class);
		// 1 : 成功
		double copyResult = (double) data.getData();
		reslut = (int) copyResult;
		getExcept(data);
		return reslut;
	}

	/*
	 * 开启指定volume 参数中需给出volume的名字 返回值： 0 成功 -1 失败
	 * 需要先检查volume是否存在，然后判断volume的状态是否已经是开启状态
	 */
	public int startVolume(String volumeName) throws Exception {
		int reslut = 0;
		log.info("start volume " + volumeName);
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("volumeName", volumeName);
		//请求web
		String rest = ht.sendPost("gfs/startVolume", map);
		if (null == rest || "".equals(rest)) {
			log.error(" ---    gluster is disconnect !   \n");
			return 0;
		}
		Gson gs = new Gson();
		PostData data = gs.fromJson(rest, PostData.class);
		// 1 : 成功
		double copyResult = (double) data.getData();
		reslut = (int) copyResult;
		getExcept(data);
		return reslut;
	}
	
	/** 记录异常信息
	 * @param pd
	 */
	private void getExcept(PostData pd) {
		StringBuffer sb = new StringBuffer();
		for ( MyException object : pd.getExceptionsStack()) {
			sb.append(object.getMess()).append(",");
		}
		if (!"".equals(sb.toString())) {
			log.error(sb.toString());
		}
	}
	
//	/** json 转 对象
//	 * @param folds
//	 * @return
//	 */
//	private List<FolderNode> setChildFolders(List<FolderNode> folds) {
//		List<FolderNode> folders = null;
//		if (null != folds) {
//			JSONArray foldJson = JSONArray.fromObject(folds);
//			folders = (List<FolderNode>)JSONArray.toCollection(foldJson, FolderNode.class);
//			for (FolderNode folderNode : folders) {
//				List<FolderNode> childFolds = folderNode.getChildNodes();
//				//递归
//				folderNode.setChildNodes(setChildFolders(childFolds));
//			}
//		}
//		return folders;
//	}
//	
//	/** json 转 对象
//	 * @param bricks
//	 * @return
//	 */
//	private List<Brick> setBricks(List<Brick> bricks) {
//		List<Brick> bs = null;
//		if (null != bricks) {
//			JSONArray bsJson = JSONArray.fromObject(bricks);
//			bs = (List<Brick>)JSONArray.toCollection(bsJson, Brick.class);
//		}
//		return bs;
//	}
}