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package com.luhuiguo.fastdfs.proto.tracker.internal;

import org.apache.commons.lang3.Validate;

import com.luhuiguo.fastdfs.proto.CmdConstants;
import com.luhuiguo.fastdfs.proto.FdfsRequest;
import com.luhuiguo.fastdfs.proto.OtherConstants;
import com.luhuiguo.fastdfs.proto.ProtoHead;
import com.luhuiguo.fastdfs.proto.mapper.DynamicFieldType;
import com.luhuiguo.fastdfs.proto.mapper.FdfsColumn;

/**
 * 获取源服务器
 * 
 * @author tobato
 *
 */
public class TrackerGetFetchStorageRequest extends FdfsRequest {

    private static final byte fetchCmd = CmdConstants.TRACKER_PROTO_CMD_SERVICE_QUERY_FETCH_ONE;
    private static final byte updateCmd = CmdConstants.TRACKER_PROTO_CMD_SERVICE_QUERY_UPDATE;

    /** 组名 */
    @FdfsColumn(index = 0, max = OtherConstants.FDFS_GROUP_NAME_MAX_LEN)
    private String groupName;
    /** 路径名 */
    @FdfsColumn(index = 1, dynamicField = DynamicFieldType.allRestByte)
    private String path;

    /**
     * 获取文件源服务器
     * 
     * @param groupName
     * @param path
     */
    public TrackerGetFetchStorageRequest(String groupName, String path, boolean toUpdate) {
        Validate.notBlank(groupName, "分组不能为空");
        Validate.notBlank(path, "文件路径不能为空");
        this.groupName = groupName;
        this.path = path;
        if (toUpdate) {
            head = new ProtoHead(updateCmd);
        } else {
            head = new ProtoHead(fetchCmd);
        }
    }

    public String getGroupName() {
        return groupName;
    }

    public String getPath() {
        return path;
    }

}