protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{
base.OnNavigatingFrom(e);
if (CurrentNodeSshClient != null)
{
CurrentNodeSshClient.Disconnect();
}
}
private void ExecutingButton_Click(object sender, RoutedEventArgs e)
{
if (FileComboBox.SelectedItem is string filePath)
{
FileComboBox.IsEnabled = false;
FileTypeComboBox.IsEnabled = false;
ExecutingButton.IsEnabled = false;
Task.Run(async() => {
try
{
var cmd = CurrentNodeSshClient.CreateCommand(CurrentNode.HadoopHomeDirectory + filePath);
var result = cmd.BeginExecute();
using (var stdOutReader = new StreamReader(cmd.OutputStream))
using (var stdErrReader = new StreamReader(cmd.ExtendedOutputStream))
{
while (!result.IsCompleted || !stdOutReader.EndOfStream || !stdErrReader.EndOfStream)
{
string outLine = stdOutReader.ReadLine();
if (outLine != null)
{
await this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
ContentTextBox.Text += outLine + "\n";
});
}
string errLine = stdErrReader.ReadLine();
if (errLine != null)
{
await this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
ContentTextBox.Text += errLine + "\n";
});
}
}
}
}
catch (Exception ex)
{
if (AppShell.Current != null)
{
AppShell.Current.NotifyMessage($"Error occoured when excuting commands:\n{ex.Message}");
}
}
await this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
FileComboBox.IsEnabled = true;
FileTypeComboBox.IsEnabled = true;
ExecutingButton.IsEnabled = true;
});
});
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
CurrentNode = e.Parameter as HDFSNode;
CurrentNodeSshClient = NetworkManager.CreateSSHClient(
CurrentNode.Host,
CurrentNode.User,
CurrentNode.Pswd,
CurrentNode.PrivateKey);
CurrentNodeSshClient.Connect();
}
