private void StartInternal(BackupDataSource source, BackupDataSource destination, OnErrorDelegate onError)
{
try
{
this.Start(source, destination, null);
}
catch (Exception e)
{
// Pass the exception to the calling thread
onError(e);
}
}
public void Start(BackupDataSource source, BackupDataSource destination, ProgressChangeDelegate progressChange)
{
this.source = source;
if (this.State.InProgress)
{
throw new ApplicationException("A backup operation is already in progress.");
}
this.State.InProgress = true;
this.State.ProgressPercentage = 0;
this.progressChange = progressChange;
// Transfer the data from the source to the destination
source.TransferData(destination, ProgressChange);
this.State.InProgress = false;
}
public void Start(BackupDataSource source, BackupDataSource destination, ProgressChangeDelegate progressChange)
{
this.source = source;
if (this.State.InProgress)
{
throw new ApplicationException("A backup operation is already in progress.");
}
this.State.InProgress = true;
this.State.ProgressPercentage = 0;
this.progressChange = progressChange;
// Transfer the data from the source to the destination
source.TransferData(destination, ProgressChange);
this.State.InProgress = false;
}
public override void TransferData(BackupDataSource destination, ProgressChange progressChange)
{
// Get the backup file from blob
CloudBlockBlob zipBlob = this.container.GetBlockBlobReference(this.filename);
BlobStream zipStream = zipBlob.OpenRead();
// Create a temp file for xml file
CloudBlockBlob xmlBlob = container.GetBlockBlobReference(this.xmlFilename);
BlobStream xmlStream = xmlBlob.OpenWrite();
// Unzip the backup file
this.UnzipFile(zipStream, xmlStream);
// Set delegate to class variable
this.blockTransfer = destination.WriteData;
this.progressChange = progressChange;
// Open a stream to the xml file
using (this.inStream = new StreamReader(xmlBlob.OpenRead()))
{
// The total number of backup operations is determined by the strem size
this.TotalOperations = (int)this.inStream.BaseStream.Length;
// Initialise detination writer
destination.InitialiseWriting(this.GetTables(this.inStream));
// Split stream into batches & trigger delegate
this.BatchStream(this.BlockTranferWithProgressUpdate, this.inStream.BaseStream);
if (this.Cancelled)
{
// Exit the function if the user has cancelled
return;
}
// Finalise detination writer
destination.FinaliseWriting();
}
// Delete the xml file
xmlBlob.Delete();
}
public override void TransferData(BackupDataSource destination, ProgressChange progressChange)
{
// Get all tables
var tables = this.cloudTableClient.ListTables().ToArray();
// The total number of backup operations is determined by the table count
this.TotalOperations = tables.Length;
string nextPartitionKey = null;
string nextRowKey = null;
int currentTable = 1;
// Initialise detination writer
destination.InitialiseWriting(tables);
// Iterate through each table
foreach (string table in tables)
{
if (this.Cancelled)
{
// Exit the function if the user has cancelled
return;
}
// Retrieve all entities for this table in blocks
do
{
// Trigger delegate, passing in stream retrieved from table storage
this.BatchStream(destination.WriteData, GetTableData(table, ref nextPartitionKey, ref nextRowKey));
}
while (nextPartitionKey != null || nextRowKey != null);
this.UpdateProgressPercentage(currentTable, progressChange);
currentTable++;
}
// Finalise detination writer
destination.FinaliseWriting();
}
public override void TransferData(BackupDataSource destination, ProgressChange progressChange)
{
// Get all tables
var tables = this.cloudTableClient.ListTables().ToArray();
// The total number of backup operations is determined by the table count
this.TotalOperations = tables.Length;
string nextPartitionKey = null;
string nextRowKey = null;
int currentTable = 1;
// Initialise detination writer
destination.InitialiseWriting(tables);
// Iterate through each table
foreach (string table in tables)
{
if (this.Cancelled)
{
// Exit the function if the user has cancelled
return;
}
// Retrieve all entities for this table in blocks
do
{
// Trigger delegate, passing in stream retrieved from table storage
this.BatchStream(destination.WriteData, GetTableData(table, ref nextPartitionKey, ref nextRowKey));
}while (nextPartitionKey != null || nextRowKey != null);
this.UpdateProgressPercentage(currentTable, progressChange);
currentTable++;
}
// Finalise detination writer
destination.FinaliseWriting();
}
public void StartAsync(BackupDataSource source, BackupDataSource destination)
{
StartDelegate startDelegate = new StartDelegate(StartInternal);
startDelegate.BeginInvoke(source, destination, OnError, null, null);
}
public void StartAsync(BackupDataSource source, BackupDataSource destination)
{
StartDelegate startDelegate = new StartDelegate(StartInternal);
startDelegate.BeginInvoke(source, destination, OnError, null, null);
}
private void StartInternal(BackupDataSource source, BackupDataSource destination, OnErrorDelegate onError)
{
try
{
this.Start(source, destination, null);
}
catch (Exception e)
{
// Pass the exception to the calling thread
onError(e);
}
}
public override void TransferData(BackupDataSource destination, ProgressChange progressChange)
{
// Get the backup file from blob
CloudBlockBlob zipBlob = this.container.GetBlockBlobReference(this.filename);
BlobStream zipStream = zipBlob.OpenRead();
// Create a temp file for xml file
CloudBlockBlob xmlBlob = container.GetBlockBlobReference(this.xmlFilename);
BlobStream xmlStream = xmlBlob.OpenWrite();
// Unzip the backup file
this.UnzipFile(zipStream, xmlStream);
// Set delegate to class variable
this.blockTransfer = destination.WriteData;
this.progressChange = progressChange;
// Open a stream to the xml file
using (this.inStream = new StreamReader(xmlBlob.OpenRead()))
{
// The total number of backup operations is determined by the strem size
this.TotalOperations = (int)this.inStream.BaseStream.Length;
// Initialise detination writer
destination.InitialiseWriting(this.GetTables(this.inStream));
// Split stream into batches & trigger delegate
this.BatchStream(this.BlockTranferWithProgressUpdate, this.inStream.BaseStream);
if (this.Cancelled)
{
// Exit the function if the user has cancelled
return;
}
// Finalise detination writer
destination.FinaliseWriting();
}
// Delete the xml file
xmlBlob.Delete();
}
public abstract void TransferData(BackupDataSource destination, ProgressChange progressChange);
public abstract void TransferData(BackupDataSource destination, ProgressChange progressChange);
