public override void Start()
{
Assert.IsFalse(IsRunning);
Assert.IsNotNull(Synchronization);
Assert.IsNotNull(Synchronization.StorageAccount);
Assert.AreEqual(Models.EStorageAccountType.AmazonS3, Synchronization.StorageAccountType);
AmazonS3AccountRepository dao = new AmazonS3AccountRepository();
Models.AmazonS3Account s3account = dao.GetForReadOnly(Synchronization.StorageAccount.Id);
//
// Dispose and recycle previous objects, if needed.
//
if (TransferAgent != null)
{
TransferAgent.Dispose();
}
if (TransferListControl != null)
{
TransferListControl.ClearTransfers();
}
if (SyncAgent != null)
{
SyncAgent.Dispose();
}
//
// Setup agents.
//
AWSCredentials awsCredentials = new BasicAWSCredentials(s3account.AccessKey, s3account.SecretKey);
TransferAgentOptions options = new TransferAgentOptions
{
UploadChunkSizeInBytes = Teltec.Everest.Settings.Properties.Current.UploadChunkSize * 1024 * 1024,
};
TransferAgent = new S3TransferAgent(options, awsCredentials, s3account.BucketName, CancellationTokenSource.Token);
TransferAgent.RemoteRootDir = TransferAgent.PathBuilder.CombineRemotePath("TELTEC_BKP", s3account.Hostname);
RemoteObjects = new List <ListingObject>(4096); // Avoid small resizes without compromising memory.
SyncAgent = new CustomSynchronizationAgent(TransferAgent);
RegisterEventHandlers(Synchronization);
Report.PlanType = "synchronization";
Report.PlanName = "No plan";
Report.BucketName = s3account.BucketName;
Report.HostName = Synchronization.StorageAccount.Hostname;
Report.SyncResults = SyncAgent.Results;
//
// Start the sync.
//
DoSynchronization(SyncAgent, Synchronization, Options);
}
// ...
#endregion
#region Event handlers
public override void OnStart(CustomSynchronizationAgent agent, Models.Synchronization sync)
{
base.OnStart(agent, sync);
_daoSynchronization.Insert(sync);
var message = string.Format("Synchronization started at {0}", StartedAt);
Info(message);
//StatusInfo.Update(SyncStatusLevel.OK, message);
OnUpdate(new SyncOperationEvent {
Status = SyncOperationStatus.Started, Message = message
});
}
public void OnFailure(CustomSynchronizationAgent agent, Models.Synchronization sync, Exception exception)
{
IsRunning = false;
var message = string.Format("Synchronization failed: {0}", exception != null ? exception.Message : "Exception not informed");
Error(message);
//StatusInfo.Update(SyncStatusLevel.ERROR, message);
sync.DidFail();
_daoSynchronization.Update(sync);
OnUpdate(new SyncOperationEvent {
Status = SyncOperationStatus.Failed, Message = message
});
}
/// <summary>
/// Implements the Dispose pattern
/// </summary>
/// <param name="disposing">Whether this object is being disposed via a call to Dispose
/// or garbage collected.</param>
protected override void Dispose(bool disposing)
{
if (!this._isDisposed)
{
if (disposing && _shouldDispose)
{
if (SyncAgent != null)
{
logger.Info("DISPOSING SyncAgent.");
SyncAgent.Dispose();
SyncAgent = null;
}
}
this._isDisposed = true;
}
base.Dispose(disposing);
}
public void OnFinish(CustomSynchronizationAgent agent, Models.Synchronization sync, Exception ex = null)
{
IsRunning = false;
switch (CurrentState)
{
default:
{
var message = string.Format("Synchronization failed: {0}", ex.Message);
Warn(message);
//StatusInfo.Update(SyncStatusLevel.WARN, message);
Report.AddErrorMessage(ex.Message);
Report.OperationStatus = OperationStatus.FAILED;
sync.DidFail();
_daoSynchronization.Update(sync);
OnUpdate(new SyncOperationEvent {
Status = SyncOperationStatus.Failed, Message = message
});
break;
}
case SyncOperationState.FINISHING:
{
SyncResults.Statistics stats = agent.Results.Stats;
var message = string.Format("Synchronization finished! Stats: {0} files", stats.FileCount);
Info(message);
//StatusInfo.Update(SyncStatusLevel.OK, message);
// TODO(jweyrich): Handle overall failure and cancelation during Sync?
sync.DidComplete();
_daoSynchronization.Update(sync);
OnUpdate(new SyncOperationEvent {
Status = SyncOperationStatus.Finished, Message = message
});
/*
* switch (agent.Results.OverallStatus)
* //switch (sync.Status)
* {
* default: throw new InvalidOperationException("Unexpected TransferStatus");
* case TransferStatus.CANCELED:
* Report.OperationStatus = OperationStatus.CANCELED;
* sync.WasCanceled();
* _daoSynchronization.Update(sync);
* OnUpdate(new SyncOperationEvent { Status = SyncOperationStatus.Canceled, Message = message });
* break;
* case TransferStatus.FAILED:
* Report.OperationStatus = OperationStatus.FAILED;
* sync.DidFail();
* _daoSynchronization.Update(sync);
* OnUpdate(new SyncOperationEvent { Status = SyncOperationStatus.Failed, Message = message });
* break;
* case TransferStatus.COMPLETED:
* Report.OperationStatus = OperationStatus.COMPLETED;
* sync.DidComplete();
* _daoSynchronization.Update(sync);
* OnUpdate(new SyncOperationEvent { Status = SyncOperationStatus.Finished, Message = message });
* break;
* }
*/
break;
}
}
}
public virtual void OnStart(CustomSynchronizationAgent agent, Models.Synchronization sync)
{
IsRunning = true;
sync.DidStart();
}
protected async void DoSynchronization(CustomSynchronizationAgent agent, Models.Synchronization sync, SyncOperationOptions options)
{
try
{
CurrentState = SyncOperationState.STARTING;
OnStart(agent, sync);
//
// Synchronization
//
CurrentState = SyncOperationState.SYNCHRONIZING_FILES;
{
Task syncTask = agent.Start(TransferAgent.RemoteRootDir, true);
{
var message = string.Format("Synchronizing files started.");
Info(message);
//StatusInfo.Update(SyncStatusLevel.INFO, message);
OnUpdate(new SyncOperationEvent {
Status = SyncOperationStatus.Started, Message = message
});
}
try
{
await syncTask;
}
catch (Exception ex)
{
if (ex.IsCancellation())
{
logger.Warn("Synchronizing files was canceled.");
}
else
{
logger.Log(LogLevel.Error, ex, "Caught exception during synchronizing files");
}
if (syncTask.IsFaulted || syncTask.IsCanceled)
{
if (syncTask.IsCanceled)
{
OnCancelation(agent, sync, ex); // syncTask.Exception
}
else
{
OnFailure(agent, sync, ex); // syncTask.Exception
}
return;
}
}
{
var message = string.Format("Synchronizing files finished.");
Info(message);
//StatusInfo.Update(SyncStatusLevel.INFO, message);
//OnUpdate(new SyncOperationEvent { Status = SyncOperationStatus.Finished, Message = message });
}
{
var message = string.Format("Estimated synchronization size: {0} files, {1}",
RemoteObjects.Count(), FileSizeUtils.FileSizeToString(agent.Results.Stats.TotalSize));
Info(message);
}
}
//
// Database files saving
//
CurrentState = SyncOperationState.SAVING_TO_DATABASE;
{
Task saveTask = ExecuteOnBackround(() =>
{
// Save everything.
Save(CancellationTokenSource.Token);
}, CancellationTokenSource.Token);
{
var message = string.Format("Database files saving started.");
Info(message);
}
try
{
await saveTask;
}
catch (Exception ex)
{
if (ex.IsCancellation())
{
logger.Warn("Database files saving was canceled.");
}
else
{
logger.Log(LogLevel.Error, ex, "Caught exception during database files saving");
}
if (saveTask.IsFaulted || saveTask.IsCanceled)
{
if (saveTask.IsCanceled)
{
OnCancelation(agent, sync, ex); // saveTask.Exception
}
else
{
OnFailure(agent, sync, ex); // saveTask.Exception
}
return;
}
}
{
var message = string.Format("Database files saving finished.");
Info(message);
}
}
CurrentState = SyncOperationState.FINISHING;
OnFinish(agent, sync);
}
catch (Exception ex)
{
OnFinish(agent, sync, ex);
}
}
