/// <summary>Default constructor is private.</summary>
private AccountInfo()
{
this.BucketName = S3ObjectInfoProvider.GetBucketName("~");
if (string.IsNullOrEmpty(this.BucketName))
{
throw new InvalidOperationException($"Amazon S3 bucket name could not be found. You must specify it in Settings by {SettingsKeyNames.AmazonS3BucketName} setting key.");
}
this.mS3Client = new AmazonS3ClientFactory().Create(this.BucketName);
}
/// <summary>Sets last write time and creation time to S3 object.</summary>
private void SetLastWriteTimeAndCreationTimeToS3Object()
{
string dateTimeString = S3ObjectInfoProvider.GetDateTimeString(DateTime.Now);
if (this.obj.GetMetadata(S3ObjectInfoProvider.CREATION_TIME) == null)
{
this.obj.SetMetadata(S3ObjectInfoProvider.CREATION_TIME, dateTimeString, false);
}
this.obj.SetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME, dateTimeString);
}
/// <summary>
/// Opens a file, appends the specified string to the file, and then closes the file. If the file does not exist, this method creates a file, writes the specified string to the file, then closes the file.
/// </summary>
/// <param name="path">Path</param>
/// <param name="contents">Content to write.</param>
public override void AppendAllText(string path, string contents)
{
string directoryName = CMS.IO.Path.GetDirectoryName(path);
if (!CMS.IO.Directory.Exists(directoryName))
{
throw GetDirectoryNotFoundException(directoryName);
}
IS3ObjectInfo info = S3ObjectFactory.GetInfo(path);
File.Provider.AppendTextToObject(info, contents);
info.SetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME, S3ObjectInfoProvider.GetDateTimeString(DateTime.Now));
}
/// <summary>
/// Returns the date and time the specified file or directory was last written to.
/// </summary>
/// <param name="path">Path to file.</param>
public override DateTime GetLastWriteTime(string path)
{
if (!this.Exists(path))
{
throw GetFileNotFoundException(path);
}
IS3ObjectInfo info = S3ObjectFactory.GetInfo(path);
if (Provider.ObjectExists(info))
{
return(S3ObjectInfoProvider.GetStringDateTime(info.GetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME)));
}
return(System.IO.File.GetLastAccessTime(path));
}
/// <summary>
/// Creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is overwritten.
/// </summary>
/// <param name="path">Path to file.</param>
/// <param name="bytes">Bytes to write.</param>
public override void WriteAllBytes(string path, byte[] bytes)
{
string directoryName = CMS.IO.Path.GetDirectoryName(path);
if (!CMS.IO.Directory.Exists(directoryName))
{
throw GetDirectoryNotFoundException(directoryName);
}
var memoryStream = new System.IO.MemoryStream(bytes);
IS3ObjectInfo info = S3ObjectFactory.GetInfo(path);
Provider.PutDataFromStreamToObject(info, memoryStream);
info.SetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME, S3ObjectInfoProvider.GetDateTimeString(DateTime.Now));
}
/// <summary>
/// Gets end point and public access from web.config and sets properties.
/// </summary>
private static void GetEndPointAndAccess()
{
mEndPoint = ValidationHelper.GetString(SettingsHelper.AppSettings["CMSAmazonEndPoint"], null);
if (mEndPoint == null)
{
mEndPoint = $"http://{S3ObjectInfoProvider.GetBucketName("~")}.s3.amazonaws.com";
mPublicAccess = new bool?(ValidationHelper.GetBoolean(SettingsHelper.AppSettings["CMSAmazonPublicAccess"], false));
}
else
{
mEndPoint = URLHelper.AddHTTPToUrl(mEndPoint);
mPublicAccess = new bool?(ValidationHelper.GetBoolean(SettingsHelper.AppSettings["CMSAmazonPublicAccess"], true));
}
}
/// <summary>
/// Sets the date and time that the specified file was last written to.
/// </summary>
/// <param name="path">Path to file.</param>
/// <param name="lastWriteTime">Last write time.</param>
public override void SetLastWriteTime(string path, DateTime lastWriteTime)
{
if (!this.Exists(path))
{
throw GetFileNotFoundException(path);
}
IS3ObjectInfo info = S3ObjectFactory.GetInfo(path);
if (Provider.ObjectExists(info))
{
info.SetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME, S3ObjectInfoProvider.GetDateTimeString(lastWriteTime));
}
else
{
throw new InvalidOperationException($"Cannot last write time to file '{path}' because is located only in application file system. \r\n This exception typically occurs when file system is mapped to Amazon S3 storage after the file or directory\r\n '{path}' was created in the local file system. To fix this issue move given file to Amazon S3 storage.");
}
}
/// <summary>
/// Sets the specified FileAttributes of the file on the specified path.
/// </summary>
/// <param name="path">Path to file.</param>
/// <param name="fileAttributes">File attributes.</param>
public override void SetAttributes(string path, CMS.IO.FileAttributes fileAttributes)
{
if (!this.Exists(path))
{
throw GetFileNotFoundException(path);
}
IS3ObjectInfo info = S3ObjectFactory.GetInfo(path);
if (File.Provider.ObjectExists(info))
{
info.SetMetadata(S3ObjectInfoProvider.ATTRIBUTES, ValidationHelper.GetString(ValidationHelper.GetInteger(fileAttributes, 0), string.Empty), false);
info.SetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME, S3ObjectInfoProvider.GetDateTimeString(DateTime.Now));
}
else
{
throw new InvalidOperationException($"Cannot set attributes to file '{path}' because it exists only in application file system. \r\n This exception typically occurs when file system is mapped to Amazon S3 storage after the file or directory\r\n '{path}' was created in the local file system. To fix this issue move given file to Amazon S3 storage.");
}
}
/// <summary>Sets values from System.IO.FileInfo to this file info</summary>
private void InitCMSValues()
{
if (this.mSystemInfo != null)
{
this.mExtension = this.mSystemInfo.Extension;
this.mFullName = this.mSystemInfo.FullName;
this.mName = this.mSystemInfo.Name;
this.mExists = this.mSystemInfo.Exists;
this.LastWriteTime = this.mSystemInfo.LastWriteTime;
this.CreationTime = this.mSystemInfo.CreationTime;
this.IsReadOnly = this.mSystemInfo.IsReadOnly;
this.Attributes = (CMS.IO.FileAttributes) this.mSystemInfo.Attributes;
if (this.mExists)
{
this.mLength = this.mSystemInfo.Length;
}
if (this.mDirectory == null)
{
this.mDirectory = new DirectoryInfo(this.mSystemInfo.Directory.FullName);
}
this.mDirectory.CreationTime = this.mSystemInfo.Directory.CreationTime;
this.mDirectory.Exists = this.mSystemInfo.Directory.Exists;
this.mDirectory.FullName = this.mSystemInfo.Directory.FullName;
this.mDirectory.LastWriteTime = this.mSystemInfo.Directory.LastWriteTime;
this.mDirectory.Name = this.mSystemInfo.Directory.Name;
}
else
{
if (this.mExists)
{
this.mLastWriteTime = S3ObjectInfoProvider.GetStringDateTime(this.obj.GetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME));
this.mCreationTime = S3ObjectInfoProvider.GetStringDateTime(this.obj.GetMetadata(S3ObjectInfoProvider.CREATION_TIME));
this.mAttributes = (CMS.IO.FileAttributes)ValidationHelper.GetInteger((object)this.obj.GetMetadata(S3ObjectInfoProvider.CREATION_TIME), ValidationHelper.GetInteger((object)CMS.IO.FileAttributes.Normal, 0, (CultureInfo)null), (CultureInfo)null);
this.mLength = this.obj.Length;
}
else
{
this.LastWriteTime = DateTimeHelper.ZERO_TIME;
this.CreationTime = DateTimeHelper.ZERO_TIME;
this.mAttributes = CMS.IO.FileAttributes.Normal;
}
this.mDirectory = new DirectoryInfo(CMS.IO.Path.GetDirectoryName(this.FullName));
}
}
/// <summary>
/// Copies an existing file to a new file. Overwriting a file of the same name is allowed.
/// </summary>
/// <param name="sourceFileName">Path to source file.</param>
/// <param name="destFileName">Path to destination file.</param>
/// <param name="overwrite">If destination file should be overwritten.</param>
public override void Copy(string sourceFileName, string destFileName, bool overwrite)
{
if (!this.Exists(sourceFileName))
{
throw GetFileNotFoundException(sourceFileName);
}
bool destExists = CMS.IO.File.Exists(destFileName);
if (destExists && !overwrite)
{
return;
}
if (!StorageHelper.IsSameStorageProvider(sourceFileName, destFileName))
{
StorageHelper.CopyFileAcrossProviders(sourceFileName, destFileName);
}
else
{
IS3ObjectInfo sourceInfo = S3ObjectFactory.GetInfo(sourceFileName);
IS3ObjectInfo destInfo = S3ObjectFactory.GetInfo(destFileName);
if (destExists)
{
Provider.DeleteObject(destInfo);
}
if (Provider.ObjectExists(sourceInfo))
{
Provider.CopyObjects(sourceInfo, destInfo);
}
else
{
Provider.PutFileToObject(destInfo, sourceFileName);
}
IS3ObjectInfo destDirectoryInfo = S3ObjectFactory.GetInfo(CMS.IO.Path.GetDirectoryName(destFileName));
destDirectoryInfo.Key = $"{destDirectoryInfo.Key}/";
if (!Provider.ObjectExists(destDirectoryInfo))
{
Provider.CreateEmptyObject(destDirectoryInfo);
}
var now = DateTime.Now;
destDirectoryInfo.SetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME, S3ObjectInfoProvider.GetDateTimeString(now));
destInfo.SetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME, S3ObjectInfoProvider.GetDateTimeString(now), false);
destInfo.SetMetadata(S3ObjectInfoProvider.CREATION_TIME, S3ObjectInfoProvider.GetDateTimeString(now));
}
}
/// <summary>
/// Uploads one large file to Amazon S3 storage in smaller parts.
/// </summary>
/// <remarks>Stream still needs to be disposed.</remarks>
/// <param name="uploadSessionId">Unique identifier for one multipart upload. Can be obtained by <see cref="M:CMS.AmazonStorage.FileStream.InitMultiPartUpload" /> method.</param>
/// <param name="partIdentifiers">List of identifiers from Amazon S3 received after uploading each part by <see cref="M:CMS.AmazonStorage.FileStream.UploadStreamContentAsMultiPart(System.String,System.Int32)" /> method.</param>
/// <returns>ETag of the uploaded file.</returns>
public string CompleteMultiPartUploadProcess(string uploadSessionId, IEnumerable <string> partIdentifiers)
{
this.mMultiPartUploadMode = true;
List <UploadPartResponse> uploadPartResponseList = partIdentifiers.Select((id, index) => new UploadPartResponse
{
PartNumber = index + 1,
ETag = id
}).ToList();
if (this.obj.IsLocked)
{
throw new Exception($"Couldn't upload part of the object {this.obj.Key} because it is used by another process.");
}
this.obj.Lock();
this.obj.ETag = this.MultiPartUploader.CompleteMultiPartUploadProcess(this.obj.Key, this.obj.BucketName, uploadSessionId, uploadPartResponseList).ETag;
this.obj.UnLock();
this.SetLastWriteTimeAndCreationTimeToS3Object();
S3ObjectInfoProvider.RemoveRequestCache(this.obj.Key);
return(this.obj.ETag);
}
/// <summary>
/// Uploads stream's content to Amazon S3 storage as one part of the file in multipart upload process
/// identified by <paramref name="uploadSessionId" />.
/// </summary>
/// <remarks>
/// Always returns one ETag in collection. If stream's length is more than 5GB then exception is thrown.
/// </remarks>
/// <param name="uploadSessionId">Unique identifier for one multipart upload. Can be obtained by <see cref="M:CMS.AmazonStorage.FileStream.InitMultiPartUpload" />.</param>
/// <param name="nextPartNumber">Number that defines position of the data obtained by the stream in the whole multipart upload process.</param>
/// <returns>One unique identifier of the uploaded part in collection.</returns>
public IEnumerable <string> UploadStreamContentAsMultiPart(string uploadSessionId, int nextPartNumber)
{
if (this.Length > this.MaximalPartSize)
{
throw new Exception($"Maximal size of part for upload to Amazon S3 storage is {this.MaximalPartSize} current stream has length {this.Length}.");
}
this.mMultiPartUploadMode = true;
if (this.obj.IsLocked)
{
throw new Exception($"Couldn't upload part of the object {this.obj.Key} because it is used by another process.");
}
this.obj.Lock();
this.obj.Length += this.Length;
List <string> stringList = new List <string>();
this.MultiPartUploader.UploadPartFromStream(uploadSessionId, this.obj.Key, this.obj.BucketName, nextPartNumber, this);
this.obj.UnLock();
S3ObjectInfoProvider.RemoveRequestCache(this.obj.Key);
return(stringList);
}
/// <summary>
/// Deletes the specified file. An exception is not thrown if the specified file does not exist.
/// </summary>
/// <param name="path">Path to file</param>
public override void Delete(string path)
{
if (!this.Exists(path))
{
throw GetFileNotFoundException(path);
}
IS3ObjectInfo info1 = S3ObjectFactory.GetInfo(path);
if (Provider.ObjectExists(info1))
{
Provider.DeleteObject(info1);
IS3ObjectInfo info2 = S3ObjectFactory.GetInfo(CMS.IO.Path.GetDirectoryName(path));
info2.Key = $"{info2.Key}/";
if (!Provider.ObjectExists(info2))
{
Provider.CreateEmptyObject(info2);
}
info2.SetMetadata(S3ObjectInfoProvider.LAST_WRITE_TIME, S3ObjectInfoProvider.GetDateTimeString(DateTime.Now));
}
else
{
throw new InvalidOperationException($"File '{path}' cannot be deleted because it exists only in application file system. \r\n This exception typically occurs when file system is mapped to Amazon S3 storage after the file or directory\r\n '{path}' was created in the local file system. To fix this issue remove specified file or directory.");
}
}
/// <summary>
/// Aborts multipart upload to Amazon S3 storage and removes all resources already uploaded.
/// </summary>
/// <param name="uploadSessionId">
/// Unique identifier for multipart upload process to external storage.
/// Is obtained by <see cref="M:CMS.AmazonStorage.FileStream.InitMultiPartUpload" />.
/// </param>
public void AbortMultiPartUpload(string uploadSessionId)
{
S3ObjectInfoProvider.RemoveRequestCache(this.obj.Key);
this.MultiPartUploader.AbortMultiPartUpload(this.obj.Key, this.obj.BucketName, uploadSessionId);
}