/// <summary>
/// 开始上传
/// </summary>
/// <param name="upload"></param>
public async void UploadStart(Upload upload)
{
UploadStatus = UploadStatus.Uploading;
if (upload != null && upload.FileType != (int)FileType.UNKNOWN)
{
using (FileStream fileStream = new FileStream(upload.FilePath, FileMode.Open, FileAccess.Read))
{
var buffer = new byte[CHUNKSIZE];
int chunkNumber = upload.ChunkNumber;
int totalSize = upload.FileSize;
int totalChunks = (int)Math.Ceiling((double)totalSize / CHUNKSIZE);
int bytesRead = 0;
int offset = chunkNumber * CHUNKSIZE;
int uploadedLength = offset;
fileStream.Seek((long)offset, SeekOrigin.Begin);
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
//如果暂停了
if (UploadStatus == UploadStatus.Pause)
{
break;
}
//开始时间
var watch = new Stopwatch();
watch.Start();
//byte转换
var finalBuffer = new byte[bytesRead];
Buffer.BlockCopy(buffer, 0, finalBuffer, 0, bytesRead);
//上传一个分片
var response = await HttpManager.Instance.BreakPointUploadAsync <BreakPointUploadResponse>(
new UploadAlbumFileRequest(upload.TargetId, upload.AlbumId, (AlbumType)upload.AlbumType, upload.FileName, (FileType)upload.FileType, upload.Identifier, totalSize, totalChunks, chunkNumber, CHUNKSIZE, bytesRead), finalBuffer
);
Logger.Log(response.message);
//当前分片上传失败(只要不是完成和分片成功都视为失败)
if (!response.Ok && response.code != 201)
{
OnUploadFailure?.Invoke();
break;
}
//上传完成
if (response.Ok)
{
OnUploadCompleted?.Invoke();
UploadManager.DeleteUploader(upload);
break;
}
var progress = Convert.ToDouble((uploadedLength / (Double)totalSize) * 100);
//当前分片上传成功
upload.Progress = progress;
upload.ChunkNumber = chunkNumber;
var a = UploadManager.UpdateUploader(upload);
chunkNumber++;//文件块序号+1
//结束时间
watch.Stop();
uploadedLength += bytesRead;
//速度计算byte/s
var speed = CHUNKSIZE * 1000L / watch.ElapsedMilliseconds;
//计算剩余时间
var time = (totalSize - uploadedLength) / speed;
//上传进度通知
OnUploadProgressChanged?.Invoke(progress, (int)time, speed / 1024);
}
}
}
}