/// <summary>
/// Does all the setup of a DownloaderManager, including using Factories to construct Validators and Downloaders that it will use.
/// Builds all the stuff up, constructs the DownloaderManager. Packages the Mgr with its Thread in a DnldMgrHolder struct and returns it.
/// **NOTE: this follows a variant of the Builder Pattern, where we delegate constuction of a complex object.
/// could also have been in a separate Builder or Factory class but small enough to put here.
/// </summary>
/// <param name="application">the name of the Updater target application</param>
/// <returns>DnldMgrHolder struct containing Built DownloaderManager and the Thread it will run on</returns>
private DnldMgrHolder SetupDownloadManager(ApplicationConfiguration application)
{
DownloaderManager dnldMgr = null;
// create an instance of a Downloader for DownloaderManager to use:
IDownloader downloader = DownloaderFactory.Create(UpdaterConfiguration.Instance);
// create instance of Validator for DownloaderManager to use:
IValidator validator = ValidatorFactory.Create(UpdaterConfiguration.Instance);
// populate application jobentry for shared
DownloadJobStatusEntry dnldJob = new DownloadJobStatusEntry(application.Name, Guid.Empty, JobStatus.Ready);
// create the ManualResetEvent "mustStop" which we will use later if Stopping to signal "you must stop" to dnld mgr
ManualResetEvent mustStop = new ManualResetEvent(false);
// create the callback delegate pointed at our RestartUpdater method so we can restart if something fails badly:
BadExitCallback badExitCbk = new BadExitCallback(this.RestartUpdater);
// create the download manager, feed it our instance of actual downloader
dnldMgr = new DownloaderManager(downloader, validator, dnldJob, mustStop, badExitCbk);
// create the thread that this dnldMgr + its other objects will run on
Thread dnldThread = new Thread(new ThreadStart(dnldMgr.RunDownloader));
dnldThread.Name = "DownloadManagerThread_" + application.Name + "_" + _guidUniqueName.ToString();
// create new holder struct for thread + dnldmgr
DnldMgrHolder holder = new DnldMgrHolder(dnldThread, dnldMgr);
#region Event Registrations
// *** NOTE: we facade all these underlying events through this class to
// *** a) avoid exposing dnldMgr class
// *** b) so later if we choose to use a better threading model--that is, NOT allow
// *** our threads to "venture outside" and possibly dawdle out there (get blocked for instance)
// *** then it will be easy to spawn a dedicated eventing thread in here.
// *** NOTE: IF we have more than one app we're updating, then we must hook EACH DOWNLOADMANAGER's events.
// *** the sinking app will have to distinguish which app fired which event from the event args
// REGISTER for DownloaderManager's events--we do not want to expose downloader directly, so
// we shuttle its events through this class
dnldMgr.ServerManifestDownloaded += new UpdaterActionEventHandler(OnServerManifestDownloaded);
dnldMgr.UpdateAvailable += new UpdaterActionEventHandler(OnUpdateAvailable);
dnldMgr.DownloadStarted += new UpdaterActionEventHandler(OnDownloadStarted);
dnldMgr.DownloadCompleted += new UpdaterActionEventHandler(OnDownloadCompleted);
dnldMgr.ManifestValidated += new UpdaterActionEventHandler(OnManifestValidated);
dnldMgr.ManifestValidationFailed += new UpdaterActionEventHandler(OnManifestValidationFailed);
dnldMgr.FilesValidated += new UpdaterActionEventHandler(OnFilesValidated);
dnldMgr.FilesValidationFailed += new UpdaterActionEventHandler(OnFilesValidationFailed);
#endregion
// return the packaged DnldMgr
return(holder);
}
/// <summary>
/// Internal helper, stops the specified DownloadManager by application name
/// </summary>
private void StopUpdaterHelper(string appName)
{
bool isGoodStop = false;
// unpackage objects from holder
DownloaderManager dnldMgr = ((DnldMgrHolder)_dnldHolders[appName]).dnldMgr;
Thread dnldThread = ((DnldMgrHolder)_dnldHolders[appName]).dnldThread;
// signal downloaderMgr it's time to stop, chance to exit gracefully:
if (null != dnldMgr)
{
dnldMgr.MustStopUpdating.Set();
}
// check if the thread is event started
if ((null != dnldThread) && (System.Threading.ThreadState.Unstarted != dnldThread.ThreadState))
{
// wait to join for reasonable timeout
isGoodStop = dnldThread.Join(TIMEOUT_THREAD_JOIN);
}
else
{
isGoodStop = true;
}
// if it's not a clean join, then interrupt thread
if (!isGoodStop)
{
dnldThread.Interrupt();
// log problem
ApplicationUpdateManager.TraceWrite("[ApplicationUpdateManager.StopUpdater]", "RES_StopUpdaterInterruptThread", dnldThread.Name);
}
// announce we are stopping:
ApplicationUpdateManager.TraceWrite(
"[ApplicationUpdateManager.StopUpdater]",
"RESX_MESSAGE_UpdaterStopped",
dnldMgr.ApplicationName,
DateTime.Now.ToString(Resource.ResourceManager["RESX_DateTimeToStringFormat"], CultureInfo.CurrentCulture));
}
public DnldMgrHolder( Thread dnldT, DownloaderManager dnldM )
{
dnldThread = dnldT;
dnldMgr = dnldM;
restartTimer = null;
}
/// <summary>
/// Does all the setup of a DownloaderManager, including using Factories to construct Validators and Downloaders that it will use.
/// Builds all the stuff up, constructs the DownloaderManager. Packages the Mgr with its Thread in a DnldMgrHolder struct and returns it.
/// **NOTE: this follows a variant of the Builder Pattern, where we delegate constuction of a complex object.
/// could also have been in a separate Builder or Factory class but small enough to put here.
/// </summary>
/// <param name="application">the name of the Updater target application</param>
/// <returns>DnldMgrHolder struct containing Built DownloaderManager and the Thread it will run on</returns>
private DnldMgrHolder SetupDownloadManager( ApplicationConfiguration application )
{
DownloaderManager dnldMgr = null;
// create an instance of a Downloader for DownloaderManager to use:
IDownloader downloader = DownloaderFactory.Create( UpdaterConfiguration.Instance );
// create instance of Validator for DownloaderManager to use:
IValidator validator = ValidatorFactory.Create( UpdaterConfiguration.Instance );
// populate application jobentry for shared
DownloadJobStatusEntry dnldJob = new DownloadJobStatusEntry( application.Name, Guid.Empty, JobStatus.Ready );
// create the ManualResetEvent "mustStop" which we will use later if Stopping to signal "you must stop" to dnld mgr
ManualResetEvent mustStop = new ManualResetEvent( false );
// create the callback delegate pointed at our RestartUpdater method so we can restart if something fails badly:
BadExitCallback badExitCbk = new BadExitCallback( this.RestartUpdater );
// create the download manager, feed it our instance of actual downloader
dnldMgr = new DownloaderManager( downloader, validator, dnldJob, mustStop, badExitCbk );
// create the thread that this dnldMgr + its other objects will run on
Thread dnldThread = new Thread( new ThreadStart( dnldMgr.RunDownloader ) );
dnldThread.Name = "DownloadManagerThread_" + application.Name + "_" + _guidUniqueName.ToString();
// create new holder struct for thread + dnldmgr
DnldMgrHolder holder = new DnldMgrHolder( dnldThread, dnldMgr );
#region Event Registrations
// *** NOTE: we facade all these underlying events through this class to
// *** a) avoid exposing dnldMgr class
// *** b) so later if we choose to use a better threading model--that is, NOT allow
// *** our threads to "venture outside" and possibly dawdle out there (get blocked for instance)
// *** then it will be easy to spawn a dedicated eventing thread in here.
// *** NOTE: IF we have more than one app we're updating, then we must hook EACH DOWNLOADMANAGER's events.
// *** the sinking app will have to distinguish which app fired which event from the event args
// REGISTER for DownloaderManager's events--we do not want to expose downloader directly, so
// we shuttle its events through this class
dnldMgr.ServerManifestDownloaded += new UpdaterActionEventHandler( OnServerManifestDownloaded );
dnldMgr.UpdateAvailable += new UpdaterActionEventHandler( OnUpdateAvailable );
dnldMgr.DownloadStarted += new UpdaterActionEventHandler( OnDownloadStarted );
dnldMgr.DownloadCompleted += new UpdaterActionEventHandler( OnDownloadCompleted );
dnldMgr.ManifestValidated +=new UpdaterActionEventHandler( OnManifestValidated );
dnldMgr.ManifestValidationFailed +=new UpdaterActionEventHandler( OnManifestValidationFailed );
dnldMgr.FilesValidated +=new UpdaterActionEventHandler( OnFilesValidated );
dnldMgr.FilesValidationFailed +=new UpdaterActionEventHandler( OnFilesValidationFailed );
#endregion
// return the packaged DnldMgr
return holder;
}
public DnldMgrHolder(Thread dnldT, DownloaderManager dnldM)
{
dnldThread = dnldT;
dnldMgr = dnldM;
restartTimer = null;
}
