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ObsClient.resumable.cs
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ObsClient.resumable.cs
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/*----------------------------------------------------------------------------------
// Copyright 2019 Huawei Technologies Co.,Ltd.
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
//----------------------------------------------------------------------------------*/
using OBS.Internal;
using OBS.Internal.Log;
using OBS.Model;
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Net;
namespace OBS
{
public partial class ObsClient
{
#region UploadFile
/// <summary>
/// Upload a file in resumable mode.
/// </summary>
/// <param name="request">Parameters in a request for uploading a file</param>
/// <returns>Response to the request for combining parts</returns>
public CompleteMultipartUploadResponse UploadFile(UploadFileRequest request)
{
ParameterJudgment(request);
if (request.EnableCheckpoint)
{
if (string.IsNullOrEmpty(request.CheckpointFile))
{
request.CheckpointFile = request.UploadFile + ".uploadFile_record";
}
}
if (string.IsNullOrEmpty(request.UploadFile) || !File.Exists(request.UploadFile))
{
if (File.Exists(request.CheckpointFile))
{
File.Delete(request.CheckpointFile);
}
throw new ObsException("The UploadFile is not exist.", ErrorType.Sender, "NoSuchUploadFile", "");
}
return ResumableUploadExcute(request);
}
/// <summary>
/// Upload data streams in resumable mode.
/// </summary>
/// <param name="request">Parameters in a request for uploading data streams</param>
/// <returns>Response to the request for combining parts</returns>
public CompleteMultipartUploadResponse UploadStream(UploadStreamRequest request)
{
ParameterJudgment(request);
if (request.UploadStream == null)
{
throw new ObsException("The UploadStream is null.", ErrorType.Sender, "NullUploadStream", "");
}
if (!request.UploadStream.CanSeek)
{
throw new ObsException("The UploadStream is not seekable.", ErrorType.Sender, "NotSeekableUploadStream", "");
}
if (request.EnableCheckpoint)
{
if (string.IsNullOrEmpty(request.CheckpointFile))
{
request.CheckpointFile = Environment.CurrentDirectory + "/" + request.ObjectKey + ".uploadFile_record";
}
}
return ResumableUploadExcute(request);
}
/// <summary>
/// Verify parameters.
/// </summary>
/// <param name="request"></param>
private void ParameterJudgment(ResumableUploadRequest request)
{
if (request == null)
{
throw new ObsException(Constants.NullRequestMessage, ErrorType.Sender, Constants.NullRequest, "");
}
if (string.IsNullOrEmpty(request.BucketName))
{
throw new ObsException(Constants.InvalidBucketNameMessage, ErrorType.Sender, Constants.InvalidBucketName, "");
}
if (string.IsNullOrEmpty(request.ObjectKey))
{
throw new ObsException(Constants.InvalidObjectKeyMessage, ErrorType.Sender, Constants.InvalidObjectKey, "");
}
}
/// <summary>
/// Execution method of the resumable upload
/// </summary>
/// <param name="resumableUploadRequest"></param>
/// <returns></returns>
private CompleteMultipartUploadResponse ResumableUploadExcute(ResumableUploadRequest resumableUploadRequest)
{
UploadCheckPoint uploadCheckPoint = new UploadCheckPoint();
ResumableUploadTypeEnum uploadType;
if (resumableUploadRequest is UploadFileRequest)
{
uploadType = ResumableUploadTypeEnum.UploadFile;
}
else
{
uploadType = ResumableUploadTypeEnum.UploadStream;
uploadCheckPoint.UploadStream = (resumableUploadRequest as UploadStreamRequest).UploadStream;
}
if (resumableUploadRequest.EnableCheckpoint)
{
bool loadFileFlag = true;
bool paraVerifyFlag = true;
bool fileVerifyFlag = true;
if (!File.Exists(resumableUploadRequest.CheckpointFile))
{
loadFileFlag = false;
}
else
{
try
{
uploadCheckPoint.Load(resumableUploadRequest.CheckpointFile);
}
catch (Exception ex)
{
LoggerMgr.Warn(string.Format("Load checkpoint file with path {0} error", resumableUploadRequest.CheckpointFile), ex);
loadFileFlag = false;
}
}
if (loadFileFlag)
{
if (uploadType == ResumableUploadTypeEnum.UploadFile)
{
UploadFileRequest uploadFileRequest = resumableUploadRequest as UploadFileRequest;
if (!(uploadFileRequest.BucketName.Equals(uploadCheckPoint.BucketName)
&& uploadFileRequest.ObjectKey.Equals(uploadCheckPoint.ObjectKey)
&& uploadFileRequest.UploadFile.Equals(uploadCheckPoint.UploadFile)))
{
paraVerifyFlag = false;
}
else
{
fileVerifyFlag = uploadCheckPoint.IsValid(uploadFileRequest.UploadFile, null, uploadFileRequest.EnableCheckSum, uploadType);
}
}
else
{
UploadStreamRequest uploadStreamRequest = resumableUploadRequest as UploadStreamRequest;
if (!(uploadStreamRequest.BucketName.Equals(uploadCheckPoint.BucketName)
&& uploadStreamRequest.ObjectKey.Equals(uploadCheckPoint.ObjectKey)))
{
paraVerifyFlag = false;
}
else
{
fileVerifyFlag = uploadCheckPoint.IsValid(null, uploadStreamRequest.UploadStream, uploadStreamRequest.EnableCheckSum, uploadType);
}
}
}
if (!loadFileFlag || !paraVerifyFlag || !fileVerifyFlag)
{
if (loadFileFlag && !string.IsNullOrEmpty(uploadCheckPoint.BucketName) && !string.IsNullOrEmpty(uploadCheckPoint.ObjectKey) &&
!string.IsNullOrEmpty(uploadCheckPoint.UploadId))
{
AbortMultipartUpload(uploadCheckPoint);
}
if (File.Exists(resumableUploadRequest.CheckpointFile))
{
File.Delete(resumableUploadRequest.CheckpointFile);
}
ResumableUploadPrepare(resumableUploadRequest, uploadCheckPoint);
}
}
else
{
ResumableUploadPrepare(resumableUploadRequest, uploadCheckPoint);
}
TransferStreamManager mgr = null;
try
{
IList<PartResultUpload> partResultsUpload = ResumableUploadBegin(resumableUploadRequest, uploadCheckPoint, out mgr, uploadType);
foreach (PartResultUpload result in partResultsUpload)
{
if (result.IsFailed && result.Exception != null)
{
if (!resumableUploadRequest.EnableCheckpoint)
{
AbortMultipartUpload(uploadCheckPoint);
}
else if (uploadCheckPoint.IsUploadAbort)
{
AbortMultipartUpload(uploadCheckPoint);
if (File.Exists(resumableUploadRequest.CheckpointFile))
{
File.Delete(resumableUploadRequest.CheckpointFile);
}
}
throw result.Exception;
}
}
}
finally
{
if (mgr is ThreadSafeTransferStreamByBytes)
{
mgr.TransferEnd();
}
}
CompleteMultipartUploadRequest completeMultipartUploadRequest = new CompleteMultipartUploadRequest
{
BucketName = resumableUploadRequest.BucketName,
ObjectKey = resumableUploadRequest.ObjectKey,
UploadId = uploadCheckPoint.UploadId,
PartETags = uploadCheckPoint.PartEtags
};
try
{
CompleteMultipartUploadResponse completeMultipartUploadResponse = CompleteMultipartUpload(completeMultipartUploadRequest);
if (resumableUploadRequest.UploadEventHandler != null)
{
ResumableUploadEvent e = new ResumableUploadEvent();
e.EventType = ResumableUploadEventTypeEnum.CompleteMultipartUploadSucceed;
e.UploadId = uploadCheckPoint.UploadId;
e.ETag = completeMultipartUploadResponse.ETag;
resumableUploadRequest.UploadEventHandler(this, e);
}
if (resumableUploadRequest.EnableCheckpoint)
{
if (File.Exists(resumableUploadRequest.CheckpointFile))
{
File.Delete(resumableUploadRequest.CheckpointFile);
}
}
return completeMultipartUploadResponse;
}
catch (ObsException ex)
{
if (!resumableUploadRequest.EnableCheckpoint)
{
AbortMultipartUpload(uploadCheckPoint);
}
else
{
if (ex.StatusCode >= HttpStatusCode.BadRequest && ex.StatusCode < HttpStatusCode.InternalServerError)
{
AbortMultipartUpload(uploadCheckPoint);
if (File.Exists(resumableUploadRequest.CheckpointFile))
{
File.Delete(resumableUploadRequest.CheckpointFile);
}
}
}
if (resumableUploadRequest.UploadEventHandler != null)
{
ResumableUploadEvent e = new ResumableUploadEvent();
e.EventType = ResumableUploadEventTypeEnum.CompleteMultipartUploadFailed;
e.UploadId = uploadCheckPoint.UploadId;
resumableUploadRequest.UploadEventHandler(this, e);
}
throw ex;
}
}
/// <summary>
/// Prepare for uploading a file.
/// </summary>
/// <param name="resumableUploadRequest"></param>
/// <param name="uploadCheckPoint"></param>
private void ResumableUploadPrepare(ResumableUploadRequest resumableUploadRequest, UploadCheckPoint uploadCheckPoint)
{
uploadCheckPoint.BucketName = resumableUploadRequest.BucketName;
uploadCheckPoint.ObjectKey = resumableUploadRequest.ObjectKey;
long originPosition = 0;
if (resumableUploadRequest is UploadFileRequest)
{
UploadFileRequest uploadFileRequest = resumableUploadRequest as UploadFileRequest;
uploadCheckPoint.UploadFile = uploadFileRequest.UploadFile;
uploadCheckPoint.FileStatus = FileStatus.getFileStatus(uploadFileRequest.UploadFile, null, uploadFileRequest.EnableCheckSum, ResumableUploadTypeEnum.UploadFile);
}
else
{
UploadStreamRequest uploadStreamRequest = resumableUploadRequest as UploadStreamRequest;
uploadCheckPoint.UploadStream = uploadStreamRequest.UploadStream;
uploadCheckPoint.FileStatus = FileStatus.getFileStatus(null, uploadStreamRequest.UploadStream, uploadStreamRequest.EnableCheckSum, ResumableUploadTypeEnum.UploadStream);
originPosition = uploadCheckPoint.UploadStream.Position;
}
uploadCheckPoint.UploadParts = SplitUploadFile(uploadCheckPoint.FileStatus.Size, resumableUploadRequest.UploadPartSize, originPosition);
uploadCheckPoint.PartEtags = new List<PartETag>();
InitiateMultipartUploadRequest initiateRequest = new InitiateMultipartUploadRequest()
{
BucketName = resumableUploadRequest.BucketName,
ObjectKey = resumableUploadRequest.ObjectKey,
Metadata = resumableUploadRequest.Metadata,
CannedAcl = resumableUploadRequest.CannedAcl,
StorageClass = resumableUploadRequest.StorageClass,
WebsiteRedirectLocation = resumableUploadRequest.WebsiteRedirectLocation,
Expires = resumableUploadRequest.Expires,
ContentType = resumableUploadRequest.ContentType,
ContentDisposition = resumableUploadRequest.ContentDisposition,
SuccessRedirectLocation = resumableUploadRequest.SuccessRedirectLocation,
SseHeader = resumableUploadRequest.SseHeader
};
foreach (var entry in resumableUploadRequest.ExtensionPermissionMap)
{
initiateRequest.ExtensionPermissionMap.Add(entry.Key, entry.Value);
}
InitiateMultipartUploadResponse initiateResponse;
try
{
initiateResponse = InitiateMultipartUpload(initiateRequest);
}
catch (ObsException ex)
{
if (resumableUploadRequest.UploadEventHandler != null)
{
ResumableUploadEvent e = new ResumableUploadEvent();
e.EventType = ResumableUploadEventTypeEnum.InitiateMultipartUploadFailed;
resumableUploadRequest.UploadEventHandler(this, e);
}
throw ex;
}
uploadCheckPoint.UploadId = initiateResponse.UploadId;
if (resumableUploadRequest.EnableCheckpoint)
{
try
{
uploadCheckPoint.Record(resumableUploadRequest.CheckpointFile);
}
catch (Exception ex)
{
AbortMultipartUpload(uploadCheckPoint);
ObsException exception = new ObsException(ex.Message, ex);
exception.ErrorType = ErrorType.Sender;
throw exception;
}
}
if (resumableUploadRequest.UploadEventHandler != null)
{
ResumableUploadEvent e = new ResumableUploadEvent();
e.UploadId = uploadCheckPoint.UploadId;
e.EventType = ResumableUploadEventTypeEnum.InitiateMultipartUploadSucceed;
resumableUploadRequest.UploadEventHandler(this, e);
}
}
/// <summary>
/// Calculate the part list based on the file size and part size.
/// </summary>
/// <param name="fileLength"></param>
/// <param name="partSize"></param>
/// <returns></returns>
private List<UploadPart> SplitUploadFile(long fileLength, long partSize, long originPosition)
{
List<UploadPart> parts = new List<UploadPart>();
int partNumber = Convert.ToInt32(fileLength / partSize);
if (partNumber >= 10000)
{
partSize = fileLength % 10000 == 0 ? fileLength / 10000 : fileLength / 10000 + 1;
partNumber = Convert.ToInt32(fileLength / partSize);
}
if (fileLength % partSize > 0)
partNumber++;
if (partNumber == 0)
{
parts.Add(new UploadPart()
{
PartNumber = 1,
Offset = 0,
Size = 0,
IsCompleted = false
});
}
else
{
for (int i = 0; i < partNumber; i++)
{
parts.Add(new UploadPart()
{
PartNumber = i + 1,
Offset = i * partSize + originPosition,
Size = partSize,
IsCompleted = false
});
}
if (fileLength % partSize > 0)
parts[parts.Count - 1].Size = fileLength % partSize;
}
return parts;
}
/// <summary>
/// Results of the part upload
/// </summary>
internal class PartResultUpload
{
public bool IsFailed { get; set; }
public ObsException Exception { get; set; }
}
internal class UploadPartExcuteParam
{
internal ResumableUploadTypeEnum uploadType;
internal UploadPart uploadPart;
internal UploadCheckPoint uploadCheckPoint;
internal PartResultUpload partResultUpload;
internal ManualResetEvent executeEvent;
internal string checkpointFile;
internal bool enableCheckpoint;
internal TransferStreamManager mgr;
internal EventHandler<ResumableUploadEvent> eventHandler;
}
private void UploadPartExcute(object state)
{
UploadPartExcuteParam param = state as UploadPartExcuteParam;
UploadPart uploadPart = param.uploadPart;
PartResultUpload partResultUpload = new PartResultUpload();
UploadCheckPoint uploadCheckPoint = param.uploadCheckPoint;
try
{
if (!uploadCheckPoint.IsUploadAbort)
{
UploadPartRequest uploadPartRequest = new UploadPartRequest()
{
BucketName = uploadCheckPoint.BucketName,
ObjectKey = uploadCheckPoint.ObjectKey,
UploadId = uploadCheckPoint.UploadId,
PartNumber = uploadPart.PartNumber,
PartSize = uploadPart.Size,
AutoClose = false
};
UploadPartResponse uploadPartResponse = null;
if (param.uploadType == ResumableUploadTypeEnum.UploadFile)
{
if (param.mgr != null)
{
using (TransferStream stream = new TransferStream(new FileStream(uploadCheckPoint.UploadFile, FileMode.Open, FileAccess.Read)))
{
stream.Seek(uploadPart.Offset, SeekOrigin.Begin);
stream.BytesReaded += param.mgr.BytesTransfered;
stream.StartRead += param.mgr.TransferStart;
stream.BytesReset += param.mgr.TransferReset;
uploadPartRequest.InputStream = stream;
uploadPartResponse = UploadPart(uploadPartRequest);
}
}
else
{
uploadPartRequest.Offset = uploadPart.Offset;
uploadPartRequest.FilePath = uploadCheckPoint.UploadFile;
uploadPartResponse = UploadPart(uploadPartRequest);
}
}
else
{
if (param.mgr != null)
{
TransferStream stream = new TransferStream(uploadCheckPoint.UploadStream);
stream.Seek(uploadPart.Offset, SeekOrigin.Begin);
stream.BytesReaded += param.mgr.BytesTransfered;
stream.StartRead += param.mgr.TransferStart;
uploadPartRequest.InputStream = stream;
uploadPartResponse = UploadPart(uploadPartRequest);
}
else
{
uploadCheckPoint.UploadStream.Seek(uploadPart.Offset, SeekOrigin.Begin);
uploadPartRequest.Offset = uploadPart.Offset;
uploadPartRequest.InputStream = uploadCheckPoint.UploadStream;
uploadPartResponse = UploadPart(uploadPartRequest);
}
}
PartETag partEtag = new PartETag(uploadPartResponse.PartNumber, uploadPartResponse.ETag);
partResultUpload.IsFailed = false;
uploadPart.IsCompleted = true;
lock (param.uploadCheckPoint.uploadlock)
{
uploadCheckPoint.PartEtags.Add(partEtag);
if (param.enableCheckpoint)
{
uploadCheckPoint.Record(param.checkpointFile);
}
}
if (param.eventHandler != null)
{
ResumableUploadEvent e = new ResumableUploadEvent();
e.EventType = ResumableUploadEventTypeEnum.UploadPartSucceed;
e.UploadId = uploadCheckPoint.UploadId;
e.PartNumber = uploadPart.PartNumber;
e.ETag = partEtag.ETag;
param.eventHandler(this, e);
}
if (LoggerMgr.IsDebugEnabled)
{
LoggerMgr.Debug(string.Format("PartNumber {0} is done, PartSize {1}, Offset {2}", uploadPart.PartNumber,
uploadPart.Size, uploadPart.Offset));
}
}
else
{
partResultUpload.IsFailed = true;
}
}
catch (ObsException ex)
{
if (ex.StatusCode >= HttpStatusCode.BadRequest && ex.StatusCode < HttpStatusCode.InternalServerError)
{
uploadCheckPoint.IsUploadAbort = true;
}
partResultUpload.IsFailed = true;
partResultUpload.Exception = ex;
if (param.eventHandler != null)
{
ResumableUploadEvent e = new ResumableUploadEvent();
e.EventType = ResumableUploadEventTypeEnum.UploadPartFailed;
e.UploadId = uploadCheckPoint.UploadId;
e.PartNumber = uploadPart.PartNumber;
param.eventHandler(this, e);
}
}
catch (Exception ex)
{
partResultUpload.IsFailed = true;
ObsException exception = new ObsException(ex.Message, ex);
exception.ErrorType = ErrorType.Sender;
partResultUpload.Exception = exception;
if (param.eventHandler != null)
{
ResumableUploadEvent e = new ResumableUploadEvent();
e.EventType = ResumableUploadEventTypeEnum.UploadPartFailed;
e.UploadId = uploadCheckPoint.UploadId;
e.PartNumber = uploadPart.PartNumber;
param.eventHandler(this, e);
}
}
finally
{
param.partResultUpload = partResultUpload;
param.executeEvent.Set();
}
}
/// <summary>
/// Concurrently upload loads in multi-thread mode.
/// </summary>
private IList<PartResultUpload> ResumableUploadBegin(ResumableUploadRequest resumableUploadRequest, UploadCheckPoint uploadCheckPoint, out TransferStreamManager mgr, ResumableUploadTypeEnum uploadType)
{
IList<PartResultUpload> partResultsUpload = new List<PartResultUpload>();
IList<UploadPart> uploadParts = new List<UploadPart>();
long transferredBytes = 0;
foreach (var uploadPart in uploadCheckPoint.UploadParts)
{
if (uploadPart.IsCompleted)
{
transferredBytes += uploadPart.Size;
PartResultUpload result = new PartResultUpload();
result.IsFailed = false;
partResultsUpload.Add(result);
}
else
{
uploadParts.Add(uploadPart);
}
}
if (uploadParts.Count < 1)
{
mgr = null;
return partResultsUpload;
}
if (resumableUploadRequest.UploadProgress != null)
{
if (uploadType == ResumableUploadTypeEnum.UploadFile)
{
if (resumableUploadRequest.ProgressType == ProgressTypeEnum.ByBytes)
{
mgr = new ThreadSafeTransferStreamByBytes(this, resumableUploadRequest.UploadProgress,
uploadCheckPoint.FileStatus.Size, transferredBytes, resumableUploadRequest.ProgressInterval);
}
else
{
mgr = new ThreadSafeTransferStreamBySeconds(this, resumableUploadRequest.UploadProgress,
uploadCheckPoint.FileStatus.Size, transferredBytes, resumableUploadRequest.ProgressInterval);
}
}
else
{
if (resumableUploadRequest.ProgressType == ProgressTypeEnum.ByBytes)
{
mgr = new TransferStreamByBytes(resumableUploadRequest.Sender, resumableUploadRequest.UploadProgress,
uploadCheckPoint.FileStatus.Size, transferredBytes, resumableUploadRequest.ProgressInterval);
}
else
{
mgr = new ThreadSafeTransferStreamBySeconds(resumableUploadRequest.Sender, resumableUploadRequest.UploadProgress,
uploadCheckPoint.FileStatus.Size, transferredBytes, resumableUploadRequest.ProgressInterval);
}
}
}
else
{
mgr = null;
}
int taskNum = 1;
if (uploadType == ResumableUploadTypeEnum.UploadFile)
{
taskNum = Math.Min((resumableUploadRequest as UploadFileRequest).TaskNum, uploadParts.Count);
}
ManualResetEvent[] events = new ManualResetEvent[taskNum];
UploadPartExcuteParam[] executeParams = new UploadPartExcuteParam[taskNum];
for (int i = 0; i < taskNum; i++)
{
UploadPartExcuteParam param = new UploadPartExcuteParam();
param.uploadType = uploadType;
param.uploadPart = uploadParts[i];
param.uploadCheckPoint = uploadCheckPoint;
param.executeEvent = new ManualResetEvent(false);
param.enableCheckpoint = resumableUploadRequest.EnableCheckpoint;
param.checkpointFile = resumableUploadRequest.CheckpointFile;
param.eventHandler = resumableUploadRequest.UploadEventHandler;
param.mgr = mgr;
events[i] = param.executeEvent;
executeParams[i] = param;
ThreadPool.QueueUserWorkItem(UploadPartExcute, param);
}
try
{
while (taskNum < uploadParts.Count)
{
if (uploadCheckPoint.IsUploadAbort)
{
break;
}
int finished = WaitHandle.WaitAny(events);
UploadPartExcuteParam finishedParam = executeParams[finished];
partResultsUpload.Add(finishedParam.partResultUpload);
finishedParam.partResultUpload = null;
finishedParam.uploadPart = uploadParts[taskNum++];
finishedParam.executeEvent.Reset();
ThreadPool.QueueUserWorkItem(UploadPartExcute, finishedParam);
}
}
finally
{
WaitHandle.WaitAll(events);
for (int i = 0; i < events.Length; i++)
{
UploadPartExcuteParam finishedParam = executeParams[i];
partResultsUpload.Add(finishedParam.partResultUpload);
events[i].Close();
}
}
return partResultsUpload;
}
/// <summary>
/// Abort a multipart upload.
/// </summary>
private void AbortMultipartUpload(UploadCheckPoint uploadCheckPoint)
{
try
{
AbortMultipartUploadRequest abortRequest = new AbortMultipartUploadRequest
{
BucketName = uploadCheckPoint.BucketName,
ObjectKey = uploadCheckPoint.ObjectKey,
UploadId = uploadCheckPoint.UploadId,
};
this.AbortMultipartUpload(abortRequest);
}
catch (ObsException ex)
{
LoggerMgr.Warn("Abort multipart upload failed", ex);
}
}
#endregion
#region DownloadFile
/// <summary>
/// Download a file in resumable mode.
/// </summary>
/// <param name="request">Parameters in a file download request</param>
/// <returns>Response to a request for obtaining object metadata</returns>
public GetObjectMetadataResponse DownloadFile(DownloadFileRequest request)
{
ParameterJudgement(request);
return DownloadFileExcute(request);
}
/// <summary>
/// Verify the parameters of the to-be-downloaded file.
/// </summary>
/// <param name="request"></param>
private void ParameterJudgement(DownloadFileRequest request)
{
if (request == null)
{
throw new ObsException(Constants.NullRequestMessage, ErrorType.Sender, Constants.NullRequest, "");
}
if (string.IsNullOrEmpty(request.BucketName))
{
throw new ObsException(Constants.InvalidBucketNameMessage, ErrorType.Sender, Constants.InvalidBucketName, "");
}
if (string.IsNullOrEmpty(request.ObjectKey))
{
throw new ObsException(Constants.InvalidObjectKeyMessage, ErrorType.Sender, Constants.InvalidObjectKey, "");
}
if (string.IsNullOrEmpty(request.DownloadFile))
{
request.DownloadFile = Environment.CurrentDirectory + "/" + request.ObjectKey;
}
if (request.EnableCheckpoint)
{
if (string.IsNullOrEmpty(request.CheckpointFile))
{
request.CheckpointFile = request.DownloadFile + "downloadFile_record";
}
}
}
/// <summary>
/// Execution method of the resumable download
/// </summary>
private GetObjectMetadataResponse DownloadFileExcute(DownloadFileRequest downloadFileRequest)
{
DownloadCheckPoint downloadCheckPoint = new DownloadCheckPoint();
GetObjectMetadataResponse response = null;
if (downloadFileRequest.EnableCheckpoint)
{
bool loadFileFlag = true;
bool paraVerifyFlag = true;
bool fileVerifyFlag = true;
ObsException obsException = null;
try
{
downloadCheckPoint.Load(downloadFileRequest.CheckpointFile);
}
catch (Exception)
{
loadFileFlag = false;
}
if (loadFileFlag)
{
if (!(downloadFileRequest.BucketName.Equals(downloadCheckPoint.BucketName)
&& downloadFileRequest.ObjectKey.Equals(downloadCheckPoint.ObjectKey)
&& downloadFileRequest.DownloadFile.Equals(downloadCheckPoint.DownloadFile)))
{
paraVerifyFlag = false;
}
if (string.IsNullOrEmpty(downloadFileRequest.VersionId))
{
if (!string.IsNullOrEmpty(downloadCheckPoint.VersionId))
{
paraVerifyFlag = false;
}
}
else if (!downloadFileRequest.VersionId.Equals(downloadCheckPoint.VersionId))
{
paraVerifyFlag = false;
}
if (paraVerifyFlag)
{
try
{
fileVerifyFlag = downloadCheckPoint.IsValid(downloadFileRequest.TempDownloadFile, this);
}
catch (ObsException ex)
{
int statusCode = Convert.ToInt32(ex.StatusCode);
if (statusCode >= 400 && statusCode < 500)
{
fileVerifyFlag = false;
obsException = ex;
}
else
{
throw ex;
}
}
}
}
if (!loadFileFlag || !paraVerifyFlag || !fileVerifyFlag)
{
if (downloadCheckPoint.TmpFileStatus != null)
{
if (File.Exists(downloadCheckPoint.TmpFileStatus.TmpFilePath))
{
File.Delete(downloadCheckPoint.TmpFileStatus.TmpFilePath);
}
}
if (File.Exists(downloadFileRequest.CheckpointFile))
{
File.Delete(downloadFileRequest.CheckpointFile);
}
if (obsException != null)
{
throw obsException;
}
response = DownloadFilePrepare(downloadFileRequest, downloadCheckPoint);
}
}
else
{
response = DownloadFilePrepare(downloadFileRequest, downloadCheckPoint);
}
TransferStreamManager mgr = null;
try
{
IList<PartResultDown> partResultsDowns = DownloadFileBegin(downloadFileRequest, downloadCheckPoint, out mgr);
foreach (PartResultDown result in partResultsDowns)
{
if (result.IsFailed && result.Exception != null)
{
if (!downloadFileRequest.EnableCheckpoint)
{
if (File.Exists(downloadCheckPoint.TmpFileStatus.TmpFilePath))
{
File.Delete(downloadCheckPoint.TmpFileStatus.TmpFilePath);
}
}
else if (downloadCheckPoint.IsDownloadAbort)
{
if (File.Exists(downloadCheckPoint.TmpFileStatus.TmpFilePath))
{
File.Delete(downloadCheckPoint.TmpFileStatus.TmpFilePath);
}
if (File.Exists(downloadFileRequest.CheckpointFile))
{
File.Delete(downloadFileRequest.CheckpointFile);
}
}
throw result.Exception;
}
}
}
finally
{
mgr?.TransferEnd();
}
try
{
Rename(downloadFileRequest.TempDownloadFile, downloadFileRequest.DownloadFile);
}
catch (Exception ex)
{
if (File.Exists(downloadFileRequest.CheckpointFile))
{
File.Delete(downloadFileRequest.CheckpointFile);
}
ObsException exception = new ObsException(ex.Message, ex);
exception.ErrorType = ErrorType.Sender;
throw exception;
}