/// <summary>
/// Compute the layouts for the job plans.
/// </summary>
private void CreatePlanLayouts()
{
if (this.staticPlan == null)
{
this.comboBox_plan.Items.Remove("Static");
}
this.Status("Constructing dynamic plan", StatusKind.LongOp);
this.dynamicPlanLayout = this.Job.ComputePlanLayout(this.Status);
if (this.dynamicPlanLayout == null)
{
this.comboBox_plan.Items.Remove("Dynamic");
}
this.Status("Constructing job schedule", StatusKind.LongOp);
try
{
this.jobSchedule = new DryadLinqJobSchedule(this.Job, this.HideCancelledVertices);
}
catch (Exception e)
{
Trace.TraceInformation("Exception while building job schedule: " + e.Message);
this.jobSchedule = null;
}
// ReSharper disable CompareOfFloatsByEqualityOperator
if (this.jobSchedule == null || this.jobSchedule.X == 0 || this.jobSchedule.Y == 0)
// ReSharper restore CompareOfFloatsByEqualityOperator
{
// degenerate plan, nothing to draw
this.jobSchedule = null;
this.comboBox_plan.Items.Remove("Schedule");
}
this.Status("Job plans constructed", StatusKind.OK);
this.plansHaveBeenBuilt = true;
}
/// <summary>
/// Generate a layout suitable for drawing the plan.
/// </summary>
/// <returns>A graph layout.</returns>
/// <param name="statusReporter">Delegate used to report errors.</param>
// ReSharper disable once UnusedParameter.Global
public GraphLayout ComputePlanLayout(StatusReporter statusReporter)
{
IEnumerable<DryadLinqJobStage> stages = this.AllStages().OrderBy(s => s.StartTime).ToList();
if (!stages.Any())
// no layout to compute
return null;
DateTime jobStartTime = this.StartJMTime;
DateTime lastTime = stages.Max(s => s.EndTime);
if (lastTime == jobStartTime)
// avoid the degenerate case
lastTime = jobStartTime + new TimeSpan(0, 0, 1);
GraphLayout result = new GraphLayout((lastTime - jobStartTime).TotalSeconds, stages.Count()*2);
int currentStage = 0;
foreach (DryadLinqJobStage s in stages)
{
// node represents the schedule: horizontal position is starttime - endtime
DateTime endTime = s.EndTime;
DateTime startTime = s.StartTime;
if (endTime <= jobStartTime) // unknown time?
endTime = lastTime; // assume still running
if (startTime <= jobStartTime)
startTime = jobStartTime;
GraphLayout.GraphNode node = new GraphLayout.GraphNode(
(startTime - jobStartTime).TotalSeconds, currentStage*2, (endTime - startTime).TotalSeconds, 1);
node.Shape = GraphLayout.GraphNode.NodeShape.Box;
node.Label = s.Name;
node.Stage = s.Name;
result.Add(node);
currentStage++;
}
return result;
}