/// <summary>
/// 分块的方式上传到COS,默认大小10MB
/// <para>每个分块大小为1MB - 5GB</para>
/// </summary>
/// <param name="content">要上传的字节数据</param>
/// <param name="objectName">Object 的名称，可包含路径，也可不包含路径</param>
/// <param name="bucket">存储桶</param>
/// <param name="region">区域</param>
/// <param name="path">路径</param>
/// <param name="headers">其他请求头部参数</param>
/// <returns></returns>
public async Task <(bool success, string uri)> MultipartUploadAsnyc(byte[] content, string objectName, string bucket, string region, string path = "", Dictionary <string, string> headers = null)
{
objectName.ThrowIfNull(nameof(objectName));
bucket.ThrowIfNull(nameof(bucket));
region.ThrowIfNull(nameof(region));
var init = await MultipartUploadInit(objectName, bucket, region, path, headers);
if (init.Key.IsValuable() && init.UploadID.IsValuable())//分块上传初始化成功
{
int blockSize = BlockSize * 1024 * 1024;
var complete = new TencentCosMUComplete();
long position = 0;
int index = 0;
bool flag = true;//上传正常标志
while (content.Length > position && flag)
{
long bufferSize = (content.Length - position) > blockSize ? blockSize : content.Length - position;
byte[] buffer = new byte[bufferSize];
Array.Copy(content, position, buffer, 0, bufferSize);
position += bufferSize;
var result = await MultipartUpload(BaseUri(bucket, region).Append($"{init.Key.ToEscape()}?partNumber={++index}&uploadId={init.UploadID}"), buffer, headers);
if (result.success)
{
complete.Part.Add(new Part {
PartNumber = index, ETag = result.etag
});
}
else
{
flag = false;
await MultipartUploadAbort(init.Key, init.UploadID, bucket, region, headers);
return(flag, string.Empty);
}
}
if (complete.Part.Count == index)
{
var result = await MultipartUploadComplete(init.Key, init.UploadID, bucket, region, complete, headers);
return(true, result.Location);
}
}
return(false, string.Empty);
}
/// <summary> /// 分块上传已完成请求 /// </summary> /// <param name="key">Object 的名称，包含路径</param> /// <param name="uploadID">上传中使用的ID</param> /// <param name="data">提交的分块信息数据</param> /// <param name="headers">其他请求头部参数</param> /// <returns></returns> public async Task <TencentCosMUCompleteResult> MultipartUploadComplete(string key, string uploadID, TencentCosMUComplete data, Dictionary <string, string> headers = null) => await MultipartUploadComplete(key, uploadID, Bucket, Region, data, headers);
/// <summary>
/// 分块上传已完成请求
/// </summary>
/// <param name="key">Object 的名称，包含路径</param>
/// <param name="uploadID">上传中使用的ID</param>
/// <param name="bucket">存储桶</param>
/// <param name="region">区域</param>
/// <param name="data">提交的分块信息数据</param>
/// <param name="headers">其他请求头部参数</param>
/// <returns></returns>
public async Task <TencentCosMUCompleteResult> MultipartUploadComplete(string key, string uploadID, string bucket, string region, TencentCosMUComplete data, Dictionary <string, string> headers = null)
{
var uri = BaseUri(bucket, region).Append($"{key.ToEscape()}?uploadId={uploadID}");
var req = new HttpRequestMessage(HttpMethod.Post, uri)
{
Content = new StringContent(data.ToXml(true, true))
};
using var resp = await SendAsync(req, headers);
if (!resp.IsSuccessStatusCode)
{
ThrowFailure(HttpMethod.Post, resp.StatusCode, await resp.Content.ReadAsStringAsync());
}
using Stream sr = await resp.Content.ReadAsStreamAsync();
return(sr.ToObject <TencentCosMUCompleteResult>());
}
