private FileDownloadResponse InitResponse(int code, string fileName, byte[] buffer)
{
FileDownloadResponse response = new FileDownloadResponse();
response.ret = code;
response.message = ErrorCodeDic.GetInstance().CodeMessage(code);
response.File_name = fileName;
response.File_buffer = buffer;
return response;
}
/// <summary>
/// 文件二进制流下载
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public object Post(FileDownloadRequest request)
{
int code = (int)FS_ErrorCode.Request_Success;
if (string.IsNullOrEmpty(request.file_guid))
{
code = (int)FS_ErrorCode.RequestParam_Err;
return new FileDownloadResponse { ret = code, message = ErrorCodeDic.GetInstance().CodeMessage(code), File_name = string.Empty, File_buffer = null };
}
FileDownloadResponse response = new FileDownloadResponse();
try
{
ICommonFilesService fileSvr = new CommonFilesService();
response = fileSvr.FileDownload(request.file_guid);
}
catch (Exception e)
{
string err = string.Format("CommonFileServiceHost.FileDownloadRequest error = {0}, request = {1}", e.ToString(), JsonUtil<FileDownloadRequest>.ToJson(request));
LogUtil.Error(err);
}
return response;
}
public FileDownloadResponse FileDownload(string file_guid)
{
FileDownloadResponse response = new FileDownloadResponse();
try
{
// 根据FileGuid 查询FilePath
FileEntity entity = fileDA_R.GetFileEntityByGuid(file_guid);
if (entity == null)
{
return InitResponse((int)FS_ErrorCode.DB_FilePath_Null, string.Empty, null);
}
string filePath = entity.file_path;
Stopwatch watch = new Stopwatch();
watch.Start();
FSManager.DownloadFile(filePath, (ex, fileBufferOnFDFS) =>
{
if (null != ex)
{
LogUtil.Error(string.Format("Error in FSManager.DownloadFile callback: {0}", ex.ToString()));
response = InitResponse(errorCode,entity.file_full_name, null);
errorCode = (int)FS_ErrorCode.Download_err;
response.File_buffer = null;
response.ret = errorCode;
response.message = ErrorCodeDic.GetInstance().CodeMessage(errorCode);
return;
}
response = InitResponse(errorCode, entity.file_full_name, fileBufferOnFDFS);
watch.Stop();
string info = string.Format("sync download at server(ProcessId = {0}, ThreadId = {1}, CurrTheadsNum = {2}): file_guid = {3}, file_full_name = {4}, file_path = {5},"
+ " file_md5 = {6}, file_size = {7}, invoking time = {8}ms", Process.GetCurrentProcess().Id, Thread.CurrentThread.ManagedThreadId, Process.GetCurrentProcess().Threads.Count, file_guid, entity.file_full_name, entity.file_path, entity.file_md5, entity.file_size, watch.ElapsedMilliseconds);
LogUtil.Info(info);
});
}
catch (Exception ex)
{
LogUtil.Error(string.Format("Exception FSService.Post(FileDownloadRequest): {0}", ex.ToString()));
errorCode = (int)FS_ErrorCode.Download_err;
response = InitResponse(errorCode, string.Empty, null);
}
return response;
}