/// <summary>单文件上传
/// </summary>
private async Task <FileIdentifier> SingleUploadFile(S3Patch patch, UploadFileInfo info)
{
var fileId = _fileIdGenerator.GenerateFileId(StoreType.S3, patch, info);
var putObjectRequest = new PutObjectRequest()
{
BucketName = patch.Bucket.Name,
AutoCloseStream = true,
Key = fileId,
CannedACL = GetS3CannedACL((S3Acl)patch.Bucket.Acl)
};
if (info.FileData != null)
{
putObjectRequest.InputStream = new MemoryStream(info.FileData);
}
else
{
putObjectRequest.FilePath = info.FilePath;
}
var client = _s3ClientFactory.GetClientByBucket(patch.Bucket);
var putObjectResponse = await client.PutObjectAsync(putObjectRequest);
var fileIdentifier = new FileIdentifier()
{
FileId = fileId,
Patch = patch,
StoreType = StoreType.S3
};
return(fileIdentifier);
}
/// <summary>分片上传数据
/// </summary>
private async Task <FileIdentifier> MultipartUploadFile(S3Patch patch, UploadFileInfo info)
{
var fileId = _fileIdGenerator.GenerateFileId(StoreType.S3, patch, info);
//获取S3客户端
var client = _s3ClientFactory.GetClientByBucket(patch.Bucket);
//初始化分片上传
var initiateMultipartUploadResponse = await client.InitiateMultipartUploadAsync(patch.Bucket.Name, fileId);
//上传Id
var uploadId = initiateMultipartUploadResponse.UploadId;
// 计算分片总数。
var partSize = patch.Bucket.SliceSize;
//var fi = new FileInfo(spoolFile.FilePath);//?
var fileSize = GetFileSize(info);
var partCount = fileSize / partSize;
if (fileSize % partSize != 0)
{
partCount++;
}
// 开始分片上传。partETags是保存partETag的列表，OSS收到用户提交的分片列表后，会逐一验证每个分片数据的有效性。 当所有的数据分片通过验证后，OSS会将这些分片组合成一个完整的文件。
var partETags = new List <PartETag>();
using (var fs = File.Open(info.FilePath, FileMode.Open))
{
for (var i = 0; i < partCount; i++)
{
var skipBytes = (long)partSize * i;
// 计算本次上传的片大小，最后一片为剩余的数据大小。
var size = (int)((partSize < fileSize - skipBytes) ? partSize : (fileSize - skipBytes));
byte[] buffer = new byte[size];
fs.Read(buffer, 0, size);
//分片上传
var uploadPartResponse = await client.UploadPartAsync(new UploadPartRequest()
{
BucketName = patch.Bucket.Name,
UploadId = uploadId,
Key = fileId,
InputStream = new MemoryStream(buffer),
PartSize = size,
PartNumber = i + 1
});
partETags.Add(new PartETag(uploadPartResponse.PartNumber, uploadPartResponse.ETag));
_logger.LogDebug("上传文件Key:{0},UploadId:{1},完成 {2}/{3}", fileId, uploadId, partETags.Count, partCount);
}
}
//完成上传分片
var completeMultipartUploadResponse = await client.CompleteMultipartUploadAsync(new CompleteMultipartUploadRequest()
{
BucketName = patch.Bucket.Name,
Key = fileId,
UploadId = uploadId,
PartETags = partETags
});
_logger.LogDebug("分片上传完成,Key:{0},Tags:[{1}]", completeMultipartUploadResponse.Key, string.Join(",", partETags));
var fileIdentifier = new FileIdentifier()
{
FileId = fileId,
Patch = patch,
StoreType = StoreType.S3
};
return(fileIdentifier);
}