public async Task <FileDownloadResponse> DownloadAsync(FileDownloadRequest filedownloadRequest)
{
CloudBlobContainer cloudBlobContainer = GetBlobContainerConfig(filedownloadRequest.UserId);
bool isContainerExists = await cloudBlobContainer.ExistsAsync();
if (!isContainerExists)
{
throw new ResourceNotExistsException($"userId: {filedownloadRequest.FileName} does not exists");
}
//Get blob reference
var blobReference = cloudBlobContainer.GetBlockBlobReference(filedownloadRequest.FileName);
bool isExists = await blobReference.ExistsAsync();
if (!isExists)
{
throw new ResourceNotExistsException($"Provided File {filedownloadRequest.FileName} does not exists");
}
var stream = new MemoryStream();
await blobReference.DownloadToStreamAsync(stream);
stream.Position = 0;
FileDownloadResponse response = new FileDownloadResponse {
ContentType = ContentTypeHelper.GetContentType(blobReference.Name), MemoryStream = stream
};
return(response);
}
private static async Task Run(MinioClient minio, string userBucketName, string uploadFilePath, string saveFileName)
{
var bucketName = userBucketName; //桶名
var location = "us-east-1"; //地址
var filePath = uploadFilePath; //上传文件路径
//var objectName = "device1/"+"20210107/"+saveFileName;//保存文件名
//var objectName = "device3" + "/" +levelTwo + "/" + saveFileName;
var objectName = "LK500" + "/" + DateTime.Now.ToShortDateString().ToString() + "/" + saveFileName;
var contentType = ContentTypeHelper.GetContentType(saveFileName.Substring(saveFileName.LastIndexOf('.') + 1));
var file = new FileInfo(uploadFilePath);
try
{
var found = await minio.BucketExistsAsync(bucketName);//判断是否存在桶名
if (!found)
{
await minio.MakeBucketAsync(bucketName, location);
}
_minioClient.SetTraceOn(new LogHelper());//我们在上传开始的时候，打开日志，通过日志抛出的块编号来计算出当前进度
ViewModelLocator.FileUploadViewModel.FileSize = file.Length;
ViewModelLocator.FileUploadViewModel.TotalParts = file.Length / App.MinimumPartSize + 1;//计算出文件总块数
//20210109 插入内容，如果不存在二级、三级内容及内容，直接创建并插入，如果存在二级、三级及对应内容则不插入，并返回标识
ObjectStat statObject = await PutObject_Tester(minio, bucketName, objectName, filePath, contentType);
Assert.IsTrue(statObject != null);
Assert.IsTrue(statObject.MetaData != null);
//await minio.PutObjectAsync(bucketName, objectName, filePath, contentType);//上传文件
//await minio.PutObjectAsync();//上传文件
Debug.WriteLine("Successfully uploaded " + objectName);
}
catch (MinioException e)
{
App.NewNLog.Error($"File Upload Error: {e}");
Debug.WriteLine($"File Upload Error: {e.Message}");
}
finally
{
_minioClient.SetTraceOff();
}
}
public async Task <FileDownloadResponse> DownloadAsync(FileDownloadRequest fileDownloadReq)
{
var uploads = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", fileDownloadReq.UserId, "uploads");
var filePath = Path.Combine(uploads, fileDownloadReq.FileName);
if (!System.IO.File.Exists(filePath))
{
return(null);
}
var memory = new MemoryStream();
using (var stream = new FileStream(filePath, FileMode.Open))
{
await stream.CopyToAsync(memory);
}
memory.Position = 0;
return(new FileDownloadResponse {
MemoryStream = memory, ContentType = ContentTypeHelper.GetContentType(filePath)
});
}
/// <summary>
/// 20210310 保存
/// </summary>
/// <param name="minio"></param>
/// <param name="userBucketName"></param>
/// <param name="uploadFilePath"></param>
/// <param name="saveFileName"></param>
/// <returns></returns>
private static async Task Run(MinioClient minio, string userBucketName, string uploadFilePath, string saveFileName)
{
var bucketName = userBucketName;
var location = "us-east-1";
var objectName = saveFileName;
var filePath = uploadFilePath;
var contentType = ContentTypeHelper.GetContentType(saveFileName.Substring(saveFileName.LastIndexOf('.') + 1));
var file = new FileInfo(uploadFilePath);
try
{
var found = await minio.BucketExistsAsync(bucketName);
if (!found)
{
await minio.MakeBucketAsync(bucketName, location);
}
_minioClient.SetTraceOn(new LogHelper());//我们在上传开始的时候，打开日志，通过日志抛出的块编号来计算出当前进度
ViewModelLocator.Instance.FileUploadViewModel.FileSize = file.Length;
ViewModelLocator.Instance.FileUploadViewModel.TotalParts = file.Length / App.MinimumPartSize + 1;//计算出文件总块数
//上传文件
await minio.PutObjectAsync(bucketName, objectName, filePath, contentType);
Debug.WriteLine("Successfully uploaded " + objectName);
}
catch (MinioException e)
{
App.NewNLog.Error($"File Upload Error: {e}");
Debug.WriteLine($"File Upload Error: {e.Message}");
}
finally
{
_minioClient.SetTraceOff();
}
}