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package com.vci.dbsync.filesync;
 
import com.vci.corba.common.VCIError;
import com.vci.corba.volumn.method.VolumnManagement;
import com.vci.dbsync.entity.VMInfo;
import com.vci.dbsync.log.SyncLog;
 
public class FileSync {
    private VMInfo _srcVMInfo;
    private ORBHelper _srcORB = null;
    private VolumnManagement _vmSrc = null;
    
    private VMInfo _destVMInfo;
    private ORBHelper _destORB = null;
    private VolumnManagement _vmDest = null;
    private int _blocksize = 32;
    
    private int _count = 0;
    
    
    public FileSync(VMInfo src, VMInfo dest){
        _srcVMInfo = src;
        _destVMInfo = dest;
    }
 
    public boolean Init(boolean forward) throws VCIError {
        try {
            if (forward) // 正向
            {
                _srcORB = new ORBHelper();
                _srcORB.InitORB(_srcVMInfo.getUrl(), _srcVMInfo.getIdentity());
                
                _destORB = new ORBHelper();
                _destORB.InitORB(_destVMInfo.getUrl(), _destVMInfo.getIdentity());
                
                _vmSrc = _srcORB.getVolumnService(_srcVMInfo.getService());
                _vmDest = _destORB.getVolumnService(_destVMInfo.getService());
 
            }
            else  // 反向
            {
                _srcORB = new ORBHelper();
                _srcORB.InitORB(_destVMInfo.getUrl(), _destVMInfo.getIdentity());
                
                _destORB = new ORBHelper();
                _destORB.InitORB(_srcVMInfo.getUrl(), _srcVMInfo.getIdentity());
                
                
                _vmSrc = _srcORB.getVolumnService(_destVMInfo.getService());
                _vmDest = _destORB.getVolumnService(_srcVMInfo.getService());
            }
        } catch (Exception e) {
            e.printStackTrace();
            if (e instanceof VCIError) {
                throw  (VCIError)e;
            }
            throw(new VCIError(e.getLocalizedMessage(),new String[]{"Init File Sync Exception"}));
            //throw new VCIError("uploadFileToVolume", new String[0]);
        }
        
        return true;
    }
    
    public void close(){
        if (_srcORB != null)
            _srcORB.close();
        _srcORB = null;
        
        if (_destORB != null)
            _destORB.close();
        _destORB = null;
    }
 
    /**
     * 上传文件到指定的卷
     * @param volName
     * @param ownBizOBJType
     * @param ownBizOBJOid
     * @param localFilePath
     * @return
     * @throws VCIError
     */
    public boolean syncFile(String volFile)  {
        
        try
        {
            String srcFile = _srcORB.getFilePath(volFile);
            String destFile = _destORB.getFilePath(volFile);
            
            if (!_vmSrc.isFileExist(srcFile))
                return false;
            
            long fileSize = _vmSrc.getFileSize(srcFile);
            if (fileSize == 0)
                return false;
            
            
            long curTime = _vmSrc.getCurrrentTimeMillions();
            
            int blockSize = _blocksize * 1024;
            byte[] buffer = new byte[blockSize];
            
            long offset = 0;
            
            while (offset < (fileSize - blockSize))
            {
                buffer = _vmSrc.sendFile(srcFile, offset);
                
                _vmDest.receiveFile(destFile, buffer, offset, curTime, fileSize);
                offset += blockSize;
            }
            
            long remainSize = fileSize - offset;    
            if (remainSize > 0)
            {
                buffer = new byte[(int)remainSize];
                buffer = _vmSrc.sendFile(srcFile, offset);
                _vmDest.receiveFile(destFile, buffer, offset, curTime, fileSize);
            }
 
            _count++;
            
            return true;
        }
        catch (Exception e)
        {
            e.printStackTrace();
            SyncLog.logger.error("同步文件异常：" + volFile);
            SyncLog.logger.error(e);
            
            return false;
            
//            if (e instanceof VCIError) {
//                throw  (VCIError)e;
//            }
//            throw(new VCIError(e.getMessage(), new String[]{"Sync File Exception", volFile}));
            //throw new VCIError("uploadFileToVolume", new String[0]);
        }
    }
    
    public int getCount() {
        return _count;
    }
    
}