public void Upload(string sourceFileOrFolderPath, string destinationFolderName, bool sourceIsFile = false)
{
var destinationFolder = this._storeInformation.FileSharePath;
if (!String.IsNullOrEmpty(destinationFolderName))
{
destinationFolder += PathSeparator + destinationFolderName;
}
AppTrace.TraceSource.WriteInfo(TraceType, "Moving backup from {0} to {1}", sourceFileOrFolderPath, destinationFolder);
var workFolder = Path.GetTempPath();
string sourceFolder;
if (!sourceIsFile)
{
sourceFolder = sourceFileOrFolderPath;
}
else
{
sourceFolder = Path.GetDirectoryName(sourceFileOrFolderPath);
}
// Check if the source folder can be accessed under impersonation, if not ACL it accordingly
try
{
BackupRestoreUtility.PerformIOWithRetries(
() =>
{
if (CheckFolderAccessUnderImpersonation(sourceFolder, FileAccess.Read))
{
UpdateAclOnFolder(sourceFolder, FileSystemRights.Read);
}
});
}
catch (Exception e)
{
throw new IOException(String.Format("Unable to create staging directory for work directory {0}.", workFolder), e);
}
if (sourceIsFile)
{
CopyFileToDestination(sourceFileOrFolderPath, destinationFolder, "", 3);
}
else
{
var sourceDirInfo = new DirectoryInfo(sourceFolder);
foreach (var file in sourceDirInfo.GetFiles("*", SearchOption.AllDirectories))
{
var sourceRelative = file.DirectoryName.Substring(sourceFolder.Trim('\\').Length).Trim('\\');
CopyFileToDestination(file.FullName, destinationFolder, sourceRelative, 3);
}
}
}
private void CopyFileToDestinationBlobWorker(FileCopyInfo fileCopyInfo, CloudBlockBlob destinationBlob)
{
// First let's try to copy directly from the source location. This should work fine if the
// source file is not in use.
bool exceptionWithDirectCopy = false;
try
{
CreateStreamAndUploadToBlob(fileCopyInfo.SourceFullPath, destinationBlob);
this.TraceSource.WriteInfo(
TraceType,
"Uploaded file {0} to destination blob {1}",
fileCopyInfo.SourceFullPath,
destinationBlob.Name);
}
catch (Exception e)
{
if ((false == (e is IOException)) && (false == (e is FabricException)))
{
throw;
}
exceptionWithDirectCopy = true;
}
if (exceptionWithDirectCopy)
{
// We couldn't copy the file directly to blob. This can happen when the file is in use,
// because we would be unable to open a handle to the file in that case. Therefore,
// we make a copy of the file to a temp location and then open a handle to that temp
// copy for uploading to blob.
string tempDir = Path.GetTempPath();
if (!String.IsNullOrWhiteSpace(fileCopyInfo.RelativeDirectoryName))
{
tempDir = Path.Combine(tempDir, fileCopyInfo.RelativeDirectoryName);
}
string tempDest = Path.Combine(tempDir, fileCopyInfo.SourceFileName);
FabricDirectory.CreateDirectory(tempDir);
try
{
FabricFile.Copy(fileCopyInfo.SourceFullPath, tempDest, true);
CreateStreamAndUploadToBlob(tempDest, destinationBlob);
this.TraceSource.WriteInfo(
TraceType,
"Uploaded file {0} to destination blob {1}",
fileCopyInfo.SourceFullPath,
destinationBlob.Name);
}
finally
{
try
{
BackupRestoreUtility.PerformIOWithRetries(
() =>
{
FabricDirectory.Delete(tempDir, true);
});
}
catch (Exception e)
{
this.TraceSource.WriteExceptionAsError(
TraceType,
e,
"Failed to delete temporary directory {0}.",
tempDir);
}
}
}
}
public void Download(string sourceFileOrFolderName, string destinationFolder, bool sourceIsFile = false)
{
var sourceFileOrFolderPath = Path.Combine(this._storeInformation.FileSharePath, sourceFileOrFolderName);
AppTrace.TraceSource.WriteInfo(TraceType, "Moving backup from {0} to {1}", sourceFileOrFolderPath, destinationFolder);
// First check if the destination folder exists or not, if not create it
BackupRestoreUtility.PerformIOWithRetries(
() =>
{
if (!Directory.Exists(destinationFolder))
{
Directory.CreateDirectory(destinationFolder);
}
});
// Check if post impersonation we would be able to copy the content to the destination dir,
// if not, add ACL appropriately.
try
{
BackupRestoreUtility.PerformIOWithRetries(
() =>
{
if (CheckFolderAccessUnderImpersonation(destinationFolder, FileAccess.ReadWrite))
{
UpdateAclOnFolder(destinationFolder, FileSystemRights.FullControl);
}
});
}
catch (Exception e)
{
throw new IOException(String.Format("Unable to check for folder access or update ACL for destination folder {0}.", destinationFolder), e);
}
if (!sourceIsFile)
{
FileInfo[] files = null;
var sourceDirInfo = new DirectoryInfo(sourceFileOrFolderPath);
BackupRestoreUtility.PerformIOWithRetries(
() =>
PerformOperationUnderImpersonation(
() =>
{
files = sourceDirInfo.GetFiles("*", SearchOption.AllDirectories);
return(true);
})
);
if (null == files)
{
throw new IOException(String.Format("Unable to enumerate files under directory {0}", sourceFileOrFolderPath));
}
foreach (var file in files)
{
var sourceRelative = file.DirectoryName.Substring(sourceFileOrFolderPath.Trim(PathSeparator).Length).Trim(PathSeparator);
CopyFileToDestination(file.FullName, destinationFolder, sourceRelative, 3);
}
}
else
{
CopyFileToDestination(sourceFileOrFolderPath, destinationFolder, String.Empty, 3);
}
}
private void CopyFileToDestination(string source, string destinationPath, string sourceRelative, int retryCount)
{
// Compute the destination path
var sourceFileName = Path.GetFileName(source);
string destination = Path.Combine(destinationPath, sourceRelative);
destination = Path.Combine(destination, sourceFileName);
// Figure out the name of the directory at the destination
string destinationDir;
try
{
destinationDir = Path.GetDirectoryName(destination);
}
catch (PathTooLongException e)
{
// The path to the destination directory is too long. Skip it.
AppTrace.TraceSource.WriteExceptionAsError(
TraceType,
e,
"The destination path is too long {0}",
destination);
throw;
}
// If the directory at the destination doesn't exist, then create it
if (!String.IsNullOrEmpty(destinationDir))
{
try
{
BackupRestoreUtility.PerformIOWithRetries(
() =>
this.PerformOperationUnderImpersonation(
() =>
{
if (!FabricDirectory.Exists(destinationDir))
{
FabricDirectory.CreateDirectory(destinationDir);
}
return(true);
}),
retryCount);
}
catch (Exception e)
{
AppTrace.TraceSource.WriteExceptionAsError(
TraceType,
e,
"Failed to create directory {0} for copying file {1}.",
destinationDir,
sourceRelative);
throw;
}
}
// Copy the file over to its destination
try
{
BackupRestoreUtility.PerformIOWithRetries(
() =>
{
FileCopyInfo copyInfo = new FileCopyInfo
{
Source = source,
Destination = destination
};
PerformOperationUnderImpersonation(
() => CopyFileToDestination(copyInfo));
},
retryCount);
}
catch (Exception e)
{
AppTrace.TraceSource.WriteExceptionAsError(
TraceType,
e,
"File copy failed. Source: {0}, destination: {1}",
source,
destination);
throw;
}
}
