void ITask.Execute(TaskArgs args)
{
if (args.Action == TaskArgs.TaskAction.Installation)
{
DownloadAndInstallUpdatePackage(args);
}
}
void ITask.Execute(TaskArgs args)
{
switch (args.Action)
{
case TaskArgs.TaskAction.Pre:
BackupDatabase(args);
break;
default: break;
}
}
void ITask.Execute(TaskArgs args)
{
switch (args.Action)
{
case TaskArgs.TaskAction.Pre:
StopProcesses();
break;
default:
break;
}
}
void ITask.Execute(TaskArgs args)
{
switch (args.Action)
{
case TaskArgs.TaskAction.Pre:
CheckAndMoveLegacyFiles();
break;
default:
break;
}
}
void ITask.Execute(TaskArgs args)
{
switch (args.Action)
{
case TaskArgs.TaskAction.Post:
DownloadOcrSoftwarePackage();
break;
default:
break;
}
}
void ITask.Execute(TaskArgs args)
{
switch (args.Action)
{
case TaskArgs.TaskAction.Pre:
StopSerivce();
break;
case TaskArgs.TaskAction.Post:
InstallService();
break;
default:
break;
}
}
private void bwUpdateProcess_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
TaskArgs args = new TaskArgs();
args.Context["WorkingDirectory"] = Application.StartupPath;
args.Context["InstalllOptions"] = _options;
args.Context["LocalVersion"] = _localVersion;
args.Context["ServerVersion"] = _serverVersion;
args.Action = TaskArgs.TaskAction.Pre;
ExecuteTasks(args);
args.Action = TaskArgs.TaskAction.Installation;
ExecuteTasks(args);
args.Action = TaskArgs.TaskAction.Post;
ExecuteTasks(args);
}
private void DownloadAndInstallUpdatePackage(TaskArgs args)
{
Version serverVersion = (Version)args.Context["ServerVersion"];
using (WebClient client = new WebClient())
{
string serverVersionUri = string.Format("{0}/{1}/{2}", Properties.Settings.Default.UpdateServerName, Properties.Settings.Default.UpdateFilesDirectory, serverVersion + ".zip");
Log.Write("Downloading update package, this may take a while...");
byte[] buffer = client.DownloadData(new Uri(serverVersionUri));
Log.Write("Update package downloaded. Begin unpacking...");
ZipFile zipFile = ZipFile.Read(buffer);
zipFile.ExtractAll(Application.StartupPath, ExtractExistingFileAction.OverwriteSilently);
Log.Write("Unpacking download package succeeded.");
}
}
private void BackupDatabase(TaskArgs args)
{
string wd = (string)args.Context["WorkingDirectory"];
string dbOldPath = Path.Combine(wd, OperationStoreDatabaseName);
if (File.Exists(dbOldPath))
{
string dbNewPath = Path.Combine(wd, OperationStoreDatabaseName + "." + new Random(DateTime.Now.Millisecond).Next().ToString() + ".bak");
Log.Write("Starting backup database '{0}' to '{1}'...", dbOldPath, dbNewPath);
File.Copy(dbOldPath, dbNewPath);
Log.Write("Finished backup database.");
}
else
{
Log.Write("Database file did not exist, no backup needed.");
}
}
private void ExecuteTasks(TaskArgs args)
{
foreach (ITask task in _tasks)
{
Log.Write("");
Stopwatch sw = Stopwatch.StartNew();
string taskName = task.GetType().Name;
try
{
Log.Write("Executing task '{0}' (in phase '{1}')...", taskName, args.Action);
task.Execute(args);
sw.Stop();
Log.Write("Task finished in '{0}' milliseconds.", sw.ElapsedMilliseconds);
}
catch (Exception ex)
{
// A failing task is always critical
Log.Write("Failed at task '{0}'! The error message was: '{1}'", taskName, ex.Message);
throw;
}
}
}