/// <summary>
/// This method executes a workflow that will fail. A popup is forced so KNIME blocks.
/// A second thread is spawned that will abort the execution and kill KNIME.
/// </summary>
/// <returns></returns>
public static async Task <ExitStatus> FailingExecutionAfterCancel()
{
var output = new EventBasedTextWriter();
var error = new EventBasedTextWriter();
output.OnWriteLine += OnOutputReceived;
error.OnWriteLine += OnErrorReceived;
var shellProxy = new ShellProxy(KnimeDir)
{
Arguments =
{
WorkFlowDir = FailingWorkFlow,
SuppressErrors = false // provoke blocking KNIME instance in case the workflow ends too fast
},
KillOnError = true,
};
#pragma warning disable 4014
Task.Run(() => CancelKnime(shellProxy)); // parallel cancel helper
#pragma warning restore 4014
var exitStatus = await shellProxy.StartKnime(null, output, error).ConfigureAwait(false);
Console.WriteLine("Killed KNIME successfully? " + exitStatus.KilledProcess);
return(exitStatus);
}
/// <summary>
/// This example executes a workflow that ends without errors and binds the output/error to event based textwriters.
/// </summary>
/// <returns></returns>
public static async Task <ExitStatus> SucceedingExecutionWithEventBasedBinding()
{
var output = new EventBasedTextWriter();
var error = new EventBasedTextWriter();
output.OnWriteLine += OnOutputReceived;
error.OnWriteLine += OnErrorReceived;
var shellProxy = new ShellProxy(KnimeDir)
{
Arguments =
{
WorkFlowDir = SucceedingWorkFlow
}
};
var exitStatus = await shellProxy.StartKnime(null, output, error);
return(exitStatus);
}
/// <summary>
/// This method executes a workflow that will fail. A popup is forced so KNIME blocks.
/// After a timeout is reached KNIME will be killed.
/// </summary>
/// <returns></returns>
private static async Task <ExitStatus> FailingExecutionAfterTimeout()
{
var output = new EventBasedTextWriter();
var error = new EventBasedTextWriter();
output.OnWriteLine += OnOutputReceived;
error.OnWriteLine += OnErrorReceived;
var shellProxy = new ShellProxy(KnimeDir)
{
Arguments =
{
WorkFlowDir = FailingWorkFlow,
SuppressErrors = false // provoke blocking KNIME instance in case the workflow ends too fast
},
KillOnError = true,
Timeout = 20
};
var exitStatus = await shellProxy.StartKnime(null, output, error).ConfigureAwait(false);
Console.WriteLine("Killed KNIME successfully? " + exitStatus.KilledProcess);
return(exitStatus);
}