/// <summary>
/// 获取文件信息
/// </summary>
/// <param name="storageNode">GetStorageNode方法返回的存储节点</param>
/// <param name="fileId">文件名</param>
/// <param name="clusterName">集群名称</param>
/// <returns></returns>
public async ValueTask <FastDFSFileInfo> GetFileInfo(StorageNode storageNode, string fileId, string clusterName = "")
{
var request = new QueryFileInfo(storageNode.GroupName, fileId);
var response = await _executer.Execute(request, clusterName, storageNode.ConnectionAddress);
return(new FastDFSFileInfo(response.FileSize, response.CreateTime, response.Crc32));
}
public async Task <FileResult> DownloadFileAsync(Guid fileId)
{
FileResult fileResult = null;
double maxFileSize = 1932735283;//1.8GB
try
{
logger.Info($"Begin search file by id:{fileId.ToString()}]");
QueryFileInfo queryInfo = new QueryFileInfo();
queryInfo.FileIds = new List <Guid>();
queryInfo.FileIds.Add(fileId);
SearchResults result = await SearchFileInfoById(fileId);
UploadFileResponseInfo fileInfo;
if (result.Data.Count > 0)
{
fileInfo = result.Data.FirstOrDefault();
logger.Info($"search file info: fileId{fileInfo.FileId}],filename:[{fileInfo.FileName}],filesize:[{fileInfo.FileSize}]");
if (fileInfo.FileSize < maxFileSize)
{
logger.Info($"Go to default download, fileId:{fileInfo.FileId}]");
fileResult = await DownloadFile(fileId);
}
else
{
logger.Info($"Go to HttpWebRequest download, fileId:{fileInfo.FileId}]");
fileResult = HttpWebDownFile(fileInfo);
}
}
else
{
logger.Info($"No file was found, fileId:{fileId}]");
}
}
catch (Exception e)
{
logger.Error(string.Format("An error occurred while download file with file id : '{0}'. error : {1}.", fileId, e.ToString()));
}
return(fileResult);
}