Exemple #1
0
        private static void UpdateHistory()
        {
            var remotefile      = DownloadState.Parameter.RemoteFile;
            var historyApply    = new Apply();
            var historyFileItem = new FileItem();
            var parameter       = new TransferParameter();

            if (DownloadHistory.Exists(remotefile, ref historyFileItem, ref historyApply, ref parameter, false))
            {
                historyFileItem.EndTime     = DateTime.Now;
                historyFileItem.IsCompleted = true;
                DownloadHistory.Update(remotefile, historyFileItem);
            }
        }
Exemple #2
0
        private void DownloadFile(TransferParameter parameter)
        {
            try
            {
                string logstr = "下载任务开始,正在创建临时目录.";
                Log.Debug(logstr);
                string[]      tempList = Directory.GetDirectories(Logger.TemporaryDirectory);
                DirectoryInfo di       = null;
                if (tempList.Length > 0)
                {
                    foreach (string item in tempList)
                    {
                        di = new DirectoryInfo(item);
                        if (di.LastWriteTime <= DateTime.Now.AddMonths(-6))
                        {
                            FileUtil.DeleteDirectory(item);
                        }
                    }
                }

                logstr = "正在创建本地保存目录.";
                Log.Debug(logstr);
                string localDir = Path.GetDirectoryName(parameter.LocalFile);
                if (!string.IsNullOrEmpty(localDir))
                {
                    di = new DirectoryInfo(localDir);
                    if (!di.Exists)
                    {
                        di.Create();
                    }
                }

                logstr = "正在初始化...";
                Log.Debug(logstr + "\r\n" + parameter.ToString());
                DownloadState.BlockList.Clear();
                var currentApply = new Apply();
                DownloadState.BlockList = DownloadRequst.GetBlocks(parameter, ref currentApply);
                Log.Debug(currentApply.ToString());

                DownloadState.AllowAppend                  = false;
                DownloadState.StopDownload                 = false;
                DownloadState.HasFinished                  = false;
                DownloadState.IsCompleted                  = false;
                DownloadState.OutputDebugLog               = true;
                BlockEvents.CompletedBytesCount            = 0;
                BlockEvents.TotalBytes                     = currentApply.FileSize;
                ServicePointManager.DefaultConnectionLimit = 100;


                var historyApply     = new Apply();
                var historyFileItem  = new FileItem();
                var historyparameter = new TransferParameter();
                if (DownloadHistory.Exists(parameter.RemoteFile, ref historyFileItem, ref historyApply, ref historyparameter, false) &&
                    DownloadState.CurrentApply.Equals(historyApply) &&
                    !File.Exists(parameter.LocalFile))
                {
                    logstr = "已恢复下载.";
                    Log.Debug(logstr);
                    DownloadState.AllowAppend  = true;
                    historyFileItem.HasBreaked = true;
                    if (string.IsNullOrEmpty(historyFileItem.BreakInfo))
                    {
                        historyFileItem.BreakInfo = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
                    }
                    else
                    {
                        historyFileItem.BreakInfo += ";" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
                    }
                    DownloadHistory.Update(parameter.RemoteFile, historyFileItem);
                }
                else if (DownloadHistory.Exists(parameter.RemoteFile, ref historyFileItem, ref historyApply, ref historyparameter, true) &&
                         parameter.Equals(historyparameter) &&
                         File.Exists(historyparameter.LocalFile))
                {
                    var fileInfo = new FileInfo(parameter.LocalFile);
                    if (fileInfo.Length == DownloadState.CurrentApply.FileSize &&
                        fileInfo.LastWriteTime == DownloadState.CurrentApply.LastModified)
                    {
                        logstr = parameter.TransferUrl + "此前已完成下载.";
                        Log.Debug(logstr);
                        DownloadState.HasFinished       = true;
                        BlockEvents.CompletedBytesCount = fileInfo.Length;
                        BlockEvents.OnProgress(100, 100);
                        BlockEvents.OnCompleted();
                        return;
                    }
                }

                if (!DownloadState.AllowAppend && !DownloadState.HasFinished)
                {
                    DownloadHistory.Insert(parameter.RemoteFile);

                    logstr = "已将本次下载任务追加到历史.";
                    Log.Debug(logstr);
                }

                if (BlockEvents.Begining != null)
                {
                    BlockEvents.Begining(parameter.LocalFile);
                }

                logstr = "开始处理分块";
                Log.Warn(logstr);
                foreach (Blocks item in DownloadState.BlockList)
                {
                    item.ReStore();
                    item.Download();
                    logstr += item.ToString() + "\r\n";
                    Log.Debug(logstr);
                }
                Log.Info("文件下载完毕");
            }
            catch (Exception err)
            {
                BlockEvents.OnException(err);
            }
        }