public Task DeleteAsync(FileState state, string sessionToken, CancellationToken cancellationToken)
{
var command = new AVCommand("files/" + state.ObjectId,
method: "DELETE",
sessionToken: sessionToken,
data: null);
return commandRunner.RunCommandAsync(command, cancellationToken: cancellationToken);
}
internal void MergeFromJSON(FileState state, IDictionary <string, object> jsonData)
{
lock (this.mutex)
{
string url = jsonData["url"] as string;
state.Url = new Uri(url, UriKind.Absolute);
state.bucketId = FetchBucketId(url);
state.token = jsonData["token"] as string;
state.bucket = jsonData["bucket"] as string;
state.ObjectId = jsonData["objectId"] as string;
}
}
public virtual Task<FileState> SaveAsync(FileState state,
Stream dataStream,
String sessionToken,
IProgress<AVUploadProgressEventArgs> progress,
CancellationToken cancellationToken = default(CancellationToken))
{
if (state.Url != null)
{
// !isDirty
return Task<FileState>.FromResult(state);
}
if (cancellationToken.IsCancellationRequested)
{
var tcs = new TaskCompletionSource<FileState>();
tcs.TrySetCanceled();
return tcs.Task;
}
var oldPosition = dataStream.Position;
var command = new AVCommand("files/" + state.Name,
method: "POST",
sessionToken: sessionToken,
contentType: state.MimeType,
stream: dataStream);
return commandRunner.RunCommandAsync(command,
uploadProgress: progress,
cancellationToken: cancellationToken).OnSuccess(uploadTask =>
{
var result = uploadTask.Result;
var jsonData = result.Item2;
cancellationToken.ThrowIfCancellationRequested();
return new FileState
{
Name = jsonData["name"] as string,
Url = new Uri(jsonData["url"] as string, UriKind.Absolute),
MimeType = state.MimeType
};
}).ContinueWith(t =>
{
// Rewind the stream on failure or cancellation (if possible)
if ((t.IsFaulted || t.IsCanceled) && dataStream.CanSeek)
{
dataStream.Seek(oldPosition, SeekOrigin.Begin);
}
return t;
}).Unwrap();
}
public virtual Task <FileState> SaveAsync(FileState state,
Stream dataStream,
String sessionToken,
IProgress <AVUploadProgressEventArgs> progress,
CancellationToken cancellationToken = default(CancellationToken))
{
if (state.Url != null)
{
// !isDirty
return(Task <FileState> .FromResult(state));
}
if (cancellationToken.IsCancellationRequested)
{
var tcs = new TaskCompletionSource <FileState>();
tcs.TrySetCanceled();
return(tcs.Task);
}
var oldPosition = dataStream.Position;
var command = new AVCommand("files/" + state.Name,
method: "POST",
sessionToken: sessionToken,
contentType: state.MimeType,
stream: dataStream);
return(commandRunner.RunCommandAsync(command,
uploadProgress: progress,
cancellationToken: cancellationToken).OnSuccess(uploadTask =>
{
var result = uploadTask.Result;
var jsonData = result.Item2;
cancellationToken.ThrowIfCancellationRequested();
return new FileState
{
Name = jsonData["name"] as string,
Url = new Uri(jsonData["url"] as string, UriKind.Absolute),
MimeType = state.MimeType
};
}).ContinueWith(t =>
{
// Rewind the stream on failure or cancellation (if possible)
if ((t.IsFaulted || t.IsCanceled) && dataStream.CanSeek)
{
dataStream.Seek(oldPosition, SeekOrigin.Begin);
}
return t;
}).Unwrap());
}
internal Task <Tuple <HttpStatusCode, string> > QiniuMakeFile(FileState state, Stream dataStream, string upToken, string key, long fsize, string[] ctxes, CancellationToken cancellationToken)
{
StringBuilder urlBuilder = new StringBuilder();
urlBuilder.AppendFormat("{0}/mkfile/{1}", UP_HOST, fsize);
if (key != null)
{
urlBuilder.AppendFormat("/key/{0}", ToBase64URLSafe(key));
}
var metaData = GetMetaData(state, dataStream);
StringBuilder sb = new StringBuilder();
foreach (string _key in metaData.Keys)
{
sb.AppendFormat("/{0}/{1}", _key, ToBase64URLSafe(metaData[_key].ToString()));
}
urlBuilder.Append(sb.ToString());
IList <KeyValuePair <string, string> > headers = new List <KeyValuePair <string, string> >();
//makeBlockDic.Add("Content-Type", "application/octet-stream");
string authHead = "UpToken " + upToken;
headers.Add(new KeyValuePair <string, string>("Authorization", authHead));
int proCount = ctxes.Length;
Stream body = new MemoryStream();
for (int i = 0; i < proCount; i++)
{
byte[] bctx = StringToAscii(ctxes[i]);
body.Write(bctx, 0, bctx.Length);
if (i != proCount - 1)
{
body.WriteByte((byte)',');
}
}
body.Seek(0, SeekOrigin.Begin);
var rtn = AVClient.RequestAsync(new Uri(urlBuilder.ToString()), "POST", headers, body, "text/plain", cancellationToken).OnSuccess(_ =>
{
var dic = AVClient.ReponseResolve(_.Result, CancellationToken.None);
return(_.Result);
});
return(rtn);
}
public override Task <FileState> SaveAsync(FileState state, Stream dataStream, string sessionToken, IProgress <AVUploadProgressEventArgs> progress, CancellationToken cancellationToken = default(System.Threading.CancellationToken))
{
if (state.Url != null)
{
return(Task.FromResult(state));
}
return(GetFileToken(state, cancellationToken).OnSuccess(t =>
{
var fileToken = t.Result.Item2;
var uploadUrl = fileToken["upload_url"].ToString();
state.ObjectId = fileToken["objectId"].ToString();
string url = fileToken["url"] as string;
state.Url = new Uri(url, UriKind.Absolute);
return PutFile(state, uploadUrl, dataStream);
}).Unwrap().OnSuccess(s =>
{
return s.Result;
}));
}
public override Task <FileState> SaveAsync(FileState state,
Stream dataStream,
String sessionToken,
IProgress <AVUploadProgressEventArgs> progress,
CancellationToken cancellationToken)
{
if (state.Url != null)
{
return(Task <FileState> .FromResult(state));
}
state.frozenData = dataStream;
state.CloudName = GetUniqueName(state);
return(GetQiniuToken(state, CancellationToken.None).ContinueWith(t =>
{
MergeFromJSON(state, t.Result.Item2);
return UploadNextChunk(state, dataStream, string.Empty, 0, progress);
}).Unwrap().OnSuccess <FileState>(s =>
{
return state;
}));
}
public Task <FileState> SaveAsync(FileState state,
Stream dataStream,
string sessionToken,
IProgress <AVUploadProgressEventArgs> progress,
CancellationToken cancellationToken)
{
if (state.Url != null)
{
return(Task <FileState> .FromResult(state));
}
fileState = state;
data = dataStream;
return(GetFileToken(fileState, cancellationToken).OnSuccess(_ =>
{
var fileToken = _.Result.Item2;
uploadUrl = fileToken["upload_url"].ToString();
token = fileToken["token"].ToString();
fileState.ObjectId = fileToken["objectId"].ToString();
bucket = fileToken["bucket"].ToString();
return FileSlice(cancellationToken).OnSuccess(t =>
{
if (done)
{
return Task <FileState> .FromResult(state);
}
var response = t.Result.Item2;
var resumeData = response["data"] as IDictionary <string, object>;
if (resumeData.ContainsKey("access_url"))
{
return Task <FileState> .FromResult(state);
}
var sliceSession = resumeData["session"].ToString();
var sliceOffset = long.Parse(resumeData["offset"].ToString());
return UploadSlice(sliceSession, sliceOffset, dataStream, progress, cancellationToken);
}).Unwrap();
}).Unwrap());
}
internal IDictionary <string, object> GetMetaData(FileState state, Stream data)
{
IDictionary <string, object> rtn = new Dictionary <string, object>();
if (state.MetaData != null)
{
foreach (var meta in state.MetaData)
{
rtn.Add(meta.Key, meta.Value);
}
}
MergeDic(rtn, "mime_type", AVFile.GetMIMEType(state.Name));
MergeDic(rtn, "size", data.Length);
MergeDic(rtn, "_checksum", GetMD5Code(data));
if (AVUser.CurrentUser != null)
{
if (AVUser.CurrentUser.ObjectId != null)
{
MergeDic(rtn, "owner", AVUser.CurrentUser.ObjectId);
}
}
return(rtn);
}
IList<KeyValuePair<string, string>> GetQiniuRequestHeaders(FileState state)
{
IList<KeyValuePair<string, string>> makeBlockHeaders = new List<KeyValuePair<string, string>>();
string authHead = "UpToken " + state.token;
makeBlockHeaders.Add(new KeyValuePair<string, string>("Authorization", authHead));
return makeBlockHeaders;
}
internal Task<Tuple<HttpStatusCode, string>> QiniuMakeFile(FileState state, Stream dataStream, string upToken, string key, long fsize, string[] ctxes, CancellationToken cancellationToken)
{
StringBuilder urlBuilder = new StringBuilder();
urlBuilder.AppendFormat("{0}/mkfile/{1}", UP_HOST, fsize);
if (key != null)
{
urlBuilder.AppendFormat("/key/{0}", ToBase64URLSafe(key));
}
var metaData = GetMetaData(state, dataStream);
StringBuilder sb = new StringBuilder();
foreach (string _key in metaData.Keys)
{
sb.AppendFormat("/{0}/{1}", _key, ToBase64URLSafe(metaData[_key].ToString()));
}
urlBuilder.Append(sb.ToString());
IList<KeyValuePair<string, string>> headers = new List<KeyValuePair<string, string>>();
//makeBlockDic.Add("Content-Type", "application/octet-stream");
string authHead = "UpToken " + upToken;
headers.Add(new KeyValuePair<string, string>("Authorization", authHead));
int proCount = ctxes.Length;
Stream body = new MemoryStream();
for (int i = 0; i < proCount; i++)
{
byte[] bctx = StringToAscii(ctxes[i]);
body.Write(bctx, 0, bctx.Length);
if (i != proCount - 1)
{
body.WriteByte((byte)',');
}
}
body.Seek(0, SeekOrigin.Begin);
var rtn = AVClient.RequestAsync(new Uri(urlBuilder.ToString()), "POST", headers, body, "text/plain", cancellationToken).OnSuccess(_ =>
{
var dic = AVClient.ReponseResolve(_.Result, CancellationToken.None);
return _.Result;
});
return rtn;
}
internal void MergeFromJSON(FileState state, IDictionary<string, object> jsonData)
{
lock (this.mutex)
{
string url = jsonData["url"] as string;
state.Url = new Uri(url, UriKind.Absolute);
state.bucketId = FetchBucketId(url);
state.token = jsonData["token"] as string;
state.bucket = jsonData["bucket"] as string;
state.ObjectId = jsonData["objectId"] as string;
}
}
internal string GetUniqueName(FileState state)
{
string key = Guid.NewGuid().ToString();//file Key in Qiniu.
string extension = Path.GetExtension(state.Name);
key += extension;
return key;
}
Task UploadNextChunk(FileState state, Stream dataStream, string context, long offset, IProgress<AVUploadProgressEventArgs> progress)
{
var totalSize = dataStream.Length;
var remainingSize = totalSize - state.completed;
if (progress != null)
{
lock (mutex)
{
progress.Report(new AVUploadProgressEventArgs()
{
Progress = AVFileController.CalcProgress(state.completed, totalSize)
});
}
}
if (state.completed == totalSize)
{
return QiniuMakeFile(state, state.frozenData, state.token, state.CloudName, totalSize, state.block_ctxes.ToArray(), CancellationToken.None);
}
else if (state.completed % BLOCKSIZE == 0)
{
var firstChunkBinary = GetChunkBinary(state.completed, dataStream);
var blockSize = remainingSize > BLOCKSIZE ? BLOCKSIZE : remainingSize;
return MakeBlock(state, firstChunkBinary, blockSize).ContinueWith(t =>
{
var dic = AVClient.ReponseResolve(t.Result, CancellationToken.None);
var ctx = dic.Item2["ctx"].ToString();
offset = long.Parse(dic.Item2["offset"].ToString());
var host = dic.Item2["host"].ToString();
state.completed += firstChunkBinary.Length;
if (state.completed % BLOCKSIZE == 0 || state.completed == totalSize)
{
state.block_ctxes.Add(ctx);
}
return UploadNextChunk(state, dataStream, ctx, offset, progress);
}).Unwrap();
}
else
{
var chunkBinary = GetChunkBinary(state.completed, dataStream);
return PutChunk(state, chunkBinary, context, offset).ContinueWith(t =>
{
var dic = AVClient.ReponseResolve(t.Result, CancellationToken.None);
var ctx = dic.Item2["ctx"].ToString();
offset = long.Parse(dic.Item2["offset"].ToString());
var host = dic.Item2["host"].ToString();
state.completed += chunkBinary.Length;
if (state.completed % BLOCKSIZE == 0 || state.completed == totalSize)
{
state.block_ctxes.Add(ctx);
}
//if (AVClient.fileUploaderDebugLog)
//{
// AVClient.LogTracker(state.counter + "|completed=" + state.completed + "stream:position=" + dataStream.Position + "|");
//}
return UploadNextChunk(state, dataStream, ctx, offset, progress);
}).Unwrap();
}
}
public Task<FileState> SaveAsync(FileState state,
Stream dataStream,
string sessionToken,
IProgress<AVUploadProgressEventArgs> progress,
CancellationToken cancellationToken)
{
if (state.Url != null)
{
return Task<FileState>.FromResult(state);
}
fileState = state;
data = dataStream;
return AVFileController.GetFileToken(fileState, cancellationToken).OnSuccess(_ =>
{
var fileToken = _.Result.Item2;
uploadUrl = fileToken["upload_url"].ToString();
token = fileToken["token"].ToString();
fileState.ObjectId = fileToken["objectId"].ToString();
bucket = fileToken["bucket"].ToString();
return FileSlice(cancellationToken).OnSuccess(t =>
{
if (done) return Task<FileState>.FromResult(state);
var response = t.Result.Item2;
var resumeData = response["data"] as IDictionary<string, object>;
if (resumeData.ContainsKey("access_url")) return Task<FileState>.FromResult(state);
var sliceSession = resumeData["session"].ToString();
var sliceOffset = long.Parse(resumeData["offset"].ToString());
return UploadSlice(sliceSession, sliceOffset, dataStream, progress, cancellationToken);
}).Unwrap();
}).Unwrap();
}
internal static Task<Tuple<HttpStatusCode, IDictionary<string, object>>> GetFileToken(FileState fileState, CancellationToken cancellationToken)
{
Task<Tuple<HttpStatusCode, IDictionary<string, object>>> rtn;
string currentSessionToken = AVUser.CurrentSessionToken;
string str = fileState.Name;
IDictionary<string, object> parameters = new Dictionary<string, object>();
parameters.Add("name", str);
parameters.Add("key", GetUniqueName(fileState));
parameters.Add("__type", "File");
parameters.Add("mime_type", AVFile.GetMIMEType(str));
parameters.Add("metaData", fileState.MetaData);
rtn = AVClient.RequestAsync("POST", new Uri("/fileTokens", UriKind.Relative), currentSessionToken, parameters, cancellationToken);
return rtn;
}
internal static string GetUniqueName(FileState fileState)
{
string key = Random(12);
string extension = Path.GetExtension(fileState.Name);
key += extension;
fileState.CloudName = key;
return key;
}
/// <summary>
/// 根据文件名，Uri，文件类型以及文件源信息
/// </summary>
/// <param name="name">文件名</param>
/// <param name="uri">文件Uri</param>
/// <param name="mimeType">文件类型</param>
/// <param name="metaData">文件源信息</param>
public AVFile(string name, Uri uri, string mimeType = null, IDictionary<string, object> metaData = null)
{
mimeType = mimeType == null ? GetMIMEType(name) : mimeType;
state = new FileState
{
Name = name,
Url = uri,
MetaData = metaData
};
lock (Mutex)
{
objectCounter++;
state.counter = objectCounter;
}
this.isExternal = true;
}
internal AVFile(FileState filestate)
{
this.state = filestate;
}
/// <summary>
/// 通过文件名，数据流，文件类型，文件源信息构建一个 AVFile
/// </summary>
/// <param name="name">文件名</param>
/// <param name="data">数据流</param>
/// <param name="mimeType">文件类型</param>
/// <param name="metaData">文件源信息</param>
public AVFile(string name, Stream data, string mimeType = null, IDictionary<string, object> metaData = null)
{
mimeType = mimeType == null ? GetMIMEType(name) : mimeType;
state = new FileState
{
Name = name,
MimeType = mimeType,
MetaData = metaData
};
this.dataStream = data;
lock (Mutex)
{
objectCounter++;
state.counter = objectCounter;
}
}
Task UploadNextChunk(FileState state, Stream dataStream, string context, long offset, IProgress <AVUploadProgressEventArgs> progress)
{
var totalSize = dataStream.Length;
var remainingSize = totalSize - state.completed;
if (progress != null)
{
lock (mutex)
{
progress.Report(new AVUploadProgressEventArgs()
{
Progress = AVFileController.CalcProgress(state.completed, totalSize)
});
}
}
if (state.completed == totalSize)
{
return(QiniuMakeFile(state, state.frozenData, state.token, state.CloudName, totalSize, state.block_ctxes.ToArray(), CancellationToken.None));
}
else if (state.completed % BLOCKSIZE == 0)
{
var firstChunkBinary = GetChunkBinary(state.completed, dataStream);
var blockSize = remainingSize > BLOCKSIZE ? BLOCKSIZE : remainingSize;
return(MakeBlock(state, firstChunkBinary, blockSize).ContinueWith(t =>
{
var dic = AVClient.ReponseResolve(t.Result, CancellationToken.None);
var ctx = dic.Item2["ctx"].ToString();
offset = long.Parse(dic.Item2["offset"].ToString());
var host = dic.Item2["host"].ToString();
state.completed += firstChunkBinary.Length;
if (state.completed % BLOCKSIZE == 0 || state.completed == totalSize)
{
state.block_ctxes.Add(ctx);
}
return UploadNextChunk(state, dataStream, ctx, offset, progress);
}).Unwrap());
}
else
{
var chunkBinary = GetChunkBinary(state.completed, dataStream);
return(PutChunk(state, chunkBinary, context, offset).ContinueWith(t =>
{
var dic = AVClient.ReponseResolve(t.Result, CancellationToken.None);
var ctx = dic.Item2["ctx"].ToString();
offset = long.Parse(dic.Item2["offset"].ToString());
var host = dic.Item2["host"].ToString();
state.completed += chunkBinary.Length;
if (state.completed % BLOCKSIZE == 0 || state.completed == totalSize)
{
state.block_ctxes.Add(ctx);
}
//if (AVClient.fileUploaderDebugLog)
//{
// AVClient.LogTracker(state.counter + "|completed=" + state.completed + "stream:position=" + dataStream.Position + "|");
//}
return UploadNextChunk(state, dataStream, ctx, offset, progress);
}).Unwrap());
}
}
internal Task <Tuple <HttpStatusCode, IDictionary <string, object> > > GetQiniuToken(FileState state, CancellationToken cancellationToken)
{
Task <Tuple <HttpStatusCode, IDictionary <string, object> > > rtn;
string currentSessionToken = AVUser.CurrentSessionToken;
string str = state.Name;
IDictionary <string, object> parameters = new Dictionary <string, object>();
parameters.Add("name", str);
parameters.Add("key", state.CloudName);
parameters.Add("__type", "File");
parameters.Add("mime_type", AVFile.GetMIMEType(str));
state.MetaData = GetMetaData(state, state.frozenData);
parameters.Add("metaData", state.MetaData);
rtn = AVClient.RequestAsync("POST", new Uri("qiniu", UriKind.Relative), currentSessionToken, parameters, cancellationToken);
return(rtn);
}
Task<Tuple<HttpStatusCode, string>> MakeBlock(FileState state, byte[] firstChunkBinary, long blcokSize = 4194304)
{
MemoryStream firstChunkData = new MemoryStream(firstChunkBinary, 0, firstChunkBinary.Length);
return AVClient.RequestAsync(new Uri(new Uri(UP_HOST) + string.Format("mkblk/{0}", blcokSize)), "POST", GetQiniuRequestHeaders(state), firstChunkData, "application/octet-stream", CancellationToken.None);
}
internal static Task <Tuple <HttpStatusCode, IDictionary <string, object> > > GetFileToken(FileState fileState, CancellationToken cancellationToken)
{
Task <Tuple <HttpStatusCode, IDictionary <string, object> > > rtn;
string currentSessionToken = AVUser.CurrentSessionToken;
string str = fileState.Name;
IDictionary <string, object> parameters = new Dictionary <string, object>();
parameters.Add("name", str);
parameters.Add("key", GetUniqueName(fileState));
parameters.Add("__type", "File");
parameters.Add("mime_type", AVFile.GetMIMEType(str));
parameters.Add("metaData", fileState.MetaData);
rtn = AVClient.RequestAsync("POST", new Uri("fileTokens", UriKind.Relative), currentSessionToken, parameters, cancellationToken);
return(rtn);
}
Task<Tuple<HttpStatusCode, string>> PutChunk(FileState state, byte[] chunkBinary, string LastChunkctx, long currentChunkOffsetInBlock)
{
MemoryStream chunkData = new MemoryStream(chunkBinary, 0, chunkBinary.Length);
return AVClient.RequestAsync(new Uri(new Uri(UP_HOST) + string.Format("bput/{0}/{1}", LastChunkctx,
currentChunkOffsetInBlock)), "POST",
GetQiniuRequestHeaders(state), chunkData,
"application/octet-stream", CancellationToken.None);
}
internal IDictionary<string, object> GetMetaData(FileState state, Stream data)
{
IDictionary<string, object> rtn = new Dictionary<string, object>();
if (state.MetaData != null)
{
foreach (var meta in state.MetaData)
{
rtn.Add(meta.Key, meta.Value);
}
}
MergeDic(rtn, "mime_type", AVFile.GetMIMEType(state.Name));
MergeDic(rtn, "size", data.Length);
MergeDic(rtn, "_checksum", GetMD5Code(data));
if (AVUser.CurrentUser != null)
if (AVUser.CurrentUser.ObjectId != null)
MergeDic(rtn, "owner", AVUser.CurrentUser.ObjectId);
return rtn;
}
public override Task<FileState> SaveAsync(FileState state,
Stream dataStream,
String sessionToken,
IProgress<AVUploadProgressEventArgs> progress,
CancellationToken cancellationToken)
{
if (state.Url != null)
{
return Task<FileState>.FromResult(state);
}
state.frozenData = dataStream;
state.CloudName = GetUniqueName(state);
return GetQiniuToken(state, CancellationToken.None).ContinueWith(t =>
{
MergeFromJSON(state, t.Result.Item2);
return UploadNextChunk(state, dataStream, string.Empty, 0, progress);
}).Unwrap().OnSuccess<FileState>(s =>
{
return state;
});
}
internal Task<Tuple<HttpStatusCode, IDictionary<string, object>>> GetQiniuToken(FileState state, CancellationToken cancellationToken)
{
Task<Tuple<HttpStatusCode, IDictionary<string, object>>> rtn;
string currentSessionToken = AVUser.CurrentSessionToken;
string str = state.Name;
IDictionary<string, object> parameters = new Dictionary<string, object>();
parameters.Add("name", str);
parameters.Add("key", state.CloudName);
parameters.Add("__type", "File");
parameters.Add("mime_type", AVFile.GetMIMEType(str));
state.MetaData = GetMetaData(state, state.frozenData);
parameters.Add("metaData", state.MetaData);
rtn = AVClient.RequestAsync("POST", new Uri("/qiniu", UriKind.Relative), currentSessionToken, parameters, cancellationToken);
return rtn;
}
/// <summary>
/// Saves the file to the LeanCloud cloud.
/// </summary>
/// <param name="progress">The progress callback.</param>
/// <param name="cancellationToken">The cancellation token.</param>
public Task SaveAsync(IProgress<AVUploadProgressEventArgs> progress,
CancellationToken cancellationToken)
{
return taskQueue.Enqueue(
toAwait => FileController.SaveAsync(state, dataStream, AVUser.CurrentSessionToken, progress, cancellationToken), cancellationToken)
.OnSuccess(t =>
{
state = t.Result;
});
}
Task <Tuple <HttpStatusCode, string> > MakeBlock(FileState state, byte[] firstChunkBinary, long blcokSize = 4194304)
{
MemoryStream firstChunkData = new MemoryStream(firstChunkBinary, 0, firstChunkBinary.Length);
return(AVClient.RequestAsync(new Uri(new Uri(UP_HOST) + string.Format("mkblk/{0}", blcokSize)), "POST", GetQiniuRequestHeaders(state), firstChunkData, "application/octet-stream", CancellationToken.None));
}
