public async Task <(List <ProcessItem> completed, List <ProcessItem> errors, List <string> zipfiles)> Export(ExportSetting setting)
{
exportLog?.Info("进入 Export 方法，开始导出");
exportLog?.Info(setting);
var collections = await collectionManager.GetCollections();
var nameModels = collections.Select(x => CollectionNameModel.CheckName(x))
.Select(x => new ProcessItem(x, setting.Check(x)))
.Where(x => x.ProcessEnum != ProcessEnum.None).ToArray();
exportLog?.Info($"需要处理的表数量：{nameModels.Length}");
string savefolder;
if (setting.OutputFolder?.Contains(':') ?? false)//因为一定是在 windows 里运行，所以带冒号是绝对路径，不带是相对路径
{
savefolder = setting.OutputFolder;
}
else
{
savefolder = Path.Combine(Directory.GetCurrentDirectory(), setting.OutputFolder);
}
exportLog?.Info($"保存路径：{savefolder}");
List <Tuple <ProcessItem, string> > Completed = new List <Tuple <ProcessItem, string> >();
List <ProcessItem> Errored = new List <ProcessItem>();
List <Tuple <ProcessItem, string> > toCompress = new List <Tuple <ProcessItem, string> >();
long tempBytes = 0;
int tm = 1;
List <string> resultZips = new List <string>();
foreach (var nameModel in nameModels)
{
exportLog?.Info($"开始处理表{nameModel.NameModel}");
var file = await DoDownload(nameModel.NameModel.ToString(), savefolder);
exportLog?.Info($"表{nameModel.NameModel}下载完毕");
if (!File.Exists(file) || new FileInfo(file).Length < 5)
{
exportLog?.Info($"未找到文件：{file}");
Errored.Add(nameModel);
continue;
}
else
{
tempBytes += new FileInfo(file).Length;
}
if (nameModel.ProcessEnum == ProcessEnum.BakAndRemove)
{
exportLog?.Info($"将要删除表：{nameModel.NameModel}");
await collectionManager.DropCollection(nameModel.NameModel.ToString());
exportLog?.Info($"表：{nameModel.NameModel}删除完成");
}
exportLog?.Info($"表：{nameModel.NameModel}处理完毕");
var nnm = new Tuple <ProcessItem, string>(nameModel, file);
Completed.Add(nnm);
toCompress.Add(nnm);
if (tempBytes > 20L * 1024 * 1024 * 1024)
{
resultZips.Add(Compress(toCompress, savefolder, setting.RealMaxDate, tm++));
toCompress = new List <Tuple <ProcessItem, string> >();
tempBytes = 0;
}
}
//压缩
resultZips.Add(Compress(toCompress, savefolder, setting.RealMaxDate, tm));
exportLog?.Info($"处理完毕，程序将返回");
return(Completed.Select(x => x.Item1).ToList(), Errored, resultZips);
}