/// <summary>
/// The callback method for the <see cref="IMasterServerReader.BeginReadVersionFileList"/>.
/// </summary>
/// <param name="sender">The <see cref="IMasterServerReader"/> this event came from.</param>
/// <param name="info">The information from the master server(s).</param>
/// <param name="userState">An optional state object passed by the caller to supply information to the callback method
/// from the method call.</param>
void MasterServerReader_Callback_VersionFileList(IMasterServerReader sender, IMasterServerReadInfo info, object userState)
{
State = UpdateClientState.ReadingLiveVersionFileListDone;
// Check for a valid VersionFileList
if (string.IsNullOrEmpty(info.VersionFileListText))
{
const string errmsg =
"Could not get a valid VersionFileList file from the master servers for version `{0}` - download failed.";
if (log.IsErrorEnabled)
log.ErrorFormat(errmsg, info.Version);
if (MasterServerReaderError != null)
MasterServerReaderError(this, string.Format(errmsg, info.Version));
HasErrors = true;
return;
}
try
{
_versionFileList = VersionFileList.CreateFromString(info.VersionFileListText);
}
catch (Exception ex)
{
const string errmsg =
"Could not get a valid VersionFileList file from the master servers for version `{0}`. Exception: {1}";
if (log.IsErrorEnabled)
log.ErrorFormat(errmsg, info.Version, ex);
if (MasterServerReaderError != null)
MasterServerReaderError(this, string.Format(errmsg, info.Version, ex));
HasErrors = true;
return;
}
// Find the files to update
var toUpdate = FindFilesToUpdate(_versionFileList);
// If all file hashes match, then we are good to go
if (toUpdate.Count() == 0)
{
CheckIfDownloadManagerComplete();
return;
}
// There was one or more files to update, so start the updating...
// Create the DownloadManager
_dm = new DownloadManager(Settings.TargetPath, Settings.TempPath, info.Version);
_dm.DownloadFinished += DownloadManager_DownloadFinished;
_dm.FileMoveFailed += DownloadManager_FileMoveFailed;
_dm.DownloadFailed += DownloadManager_DownloadFailed;
_dm.Finished += DownloadManager_Finished;
State = UpdateClientState.UpdatingFiles;
// Add the sources to the DownloadManager
var sources = info.DownloadSources.Select(x => x.Instantiate());
_dm.AddSources(sources);
// Enqueue the files that need to be downloaded
_dm.Enqueue(toUpdate);
}
/// <summary>
/// The callback method for the <see cref="IMasterServerReader.BeginReadVersionFileList"/>.
/// </summary>
/// <param name="sender">The <see cref="IMasterServerReader"/> this event came from.</param>
/// <param name="info">The information from the master server(s).</param>
/// <param name="userState">An optional state object passed by the caller to supply information to the callback method
/// from the method call.</param>
void MasterServerReader_Callback_VersionFileList(IMasterServerReader sender, IMasterServerReadInfo info, object userState)
{
State = UpdateClientState.ReadingLiveVersionFileListDone;
// Check for a valid VersionFileList
if (string.IsNullOrEmpty(info.VersionFileListText))
{
const string errmsg =
"Could not get a valid VersionFileList file from the master servers for version `{0}` - download failed.";
if (log.IsErrorEnabled)
{
log.ErrorFormat(errmsg, info.Version);
}
if (MasterServerReaderError != null)
{
MasterServerReaderError(this, string.Format(errmsg, info.Version));
}
HasErrors = true;
return;
}
try
{
_versionFileList = VersionFileList.CreateFromString(info.VersionFileListText);
}
catch (Exception ex)
{
const string errmsg =
"Could not get a valid VersionFileList file from the master servers for version `{0}`. Exception: {1}";
if (log.IsErrorEnabled)
{
log.ErrorFormat(errmsg, info.Version, ex);
}
if (MasterServerReaderError != null)
{
MasterServerReaderError(this, string.Format(errmsg, info.Version, ex));
}
HasErrors = true;
return;
}
// Find the files to update
var toUpdate = FindFilesToUpdate(_versionFileList);
// If all file hashes match, then we are good to go
if (toUpdate.Count() == 0)
{
CheckIfDownloadManagerComplete();
return;
}
// There was one or more files to update, so start the updating...
// Create the DownloadManager
_dm = new DownloadManager(Settings.TargetPath, Settings.TempPath, info.Version);
_dm.DownloadFinished += DownloadManager_DownloadFinished;
_dm.FileMoveFailed += DownloadManager_FileMoveFailed;
_dm.DownloadFailed += DownloadManager_DownloadFailed;
_dm.Finished += DownloadManager_Finished;
State = UpdateClientState.UpdatingFiles;
// Add the sources to the DownloadManager
var sources = info.DownloadSources.Select(x => x.Instantiate());
_dm.AddSources(sources);
// Enqueue the files that need to be downloaded
_dm.Enqueue(toUpdate);
}
/// <summary>
/// Checks if the downloading with the <see cref="DownloadManager"/> has been completed.
/// </summary>
void CheckIfDownloadManagerComplete()
{
// If the download manager is null, then skip checking it
if (_dm != null)
{
if (!_dm.IsDisposed)
{
// Do not continue if items are still enqueued for download
if (_dm.QueueCount > 0)
{
const string errmsg = "CheckIfDownloadManagerComplete() called, but items still in the download queue?";
if (log.IsWarnEnabled)
log.Warn(errmsg);
Debug.Fail(errmsg);
return;
}
// Clean up
try
{
_dm.Dispose();
}
catch (Exception ex)
{
const string errmsg = "Failed to dispose DownloadManager `{0}`. Reason: {1}";
if (log.IsWarnEnabled)
log.WarnFormat(errmsg, _dm, ex);
Debug.Fail(string.Format(errmsg, _dm, ex));
}
}
_dm = null;
}
// Abort if HasErrors is true
if (HasErrors)
{
State = UpdateClientState.Completed;
return;
}
// Clean up
Cleanup();
// If done, update the version
TrySetClientVersionToLive();
// Change the state
State = UpdateClientState.Completed;
// Set to not running
lock (_isRunningSync)
{
Debug.Assert(_isRunning);
_isRunning = false;
try
{
if (IsRunningChanged != null)
IsRunningChanged(this);
}
catch (NullReferenceException ex)
{
Debug.Fail(ex.ToString());
}
}
}
/// <summary>
/// Checks if the downloading with the <see cref="DownloadManager"/> has been completed.
/// </summary>
void CheckIfDownloadManagerComplete()
{
// If the download manager is null, then skip checking it
if (_dm != null)
{
if (!_dm.IsDisposed)
{
// Do not continue if items are still enqueued for download
if (_dm.QueueCount > 0)
{
const string errmsg = "CheckIfDownloadManagerComplete() called, but items still in the download queue?";
if (log.IsWarnEnabled)
{
log.Warn(errmsg);
}
Debug.Fail(errmsg);
return;
}
// Clean up
try
{
_dm.Dispose();
}
catch (Exception ex)
{
const string errmsg = "Failed to dispose DownloadManager `{0}`. Reason: {1}";
if (log.IsWarnEnabled)
{
log.WarnFormat(errmsg, _dm, ex);
}
Debug.Fail(string.Format(errmsg, _dm, ex));
}
}
_dm = null;
}
// Abort if HasErrors is true
if (HasErrors)
{
State = UpdateClientState.Completed;
return;
}
// Clean up
Cleanup();
// If done, update the version
TrySetClientVersionToLive();
// Change the state
State = UpdateClientState.Completed;
// Set to not running
lock (_isRunningSync)
{
Debug.Assert(_isRunning);
_isRunning = false;
try
{
if (IsRunningChanged != null)
{
IsRunningChanged(this);
}
}
catch (NullReferenceException ex)
{
Debug.Fail(ex.ToString());
}
}
}
