how to get Task inputs from TaskStartedEventArgs?

[meirumeiru]

I found the "IEventSource3::IncludeTaskInputs" and I see that selecting "diagnose" level for compilations in Visual Studio does in fact log inputs of tasks, but I have no idea how to find the inputs of tasks from within a TaskStartedEventHandler. What's the purpose of "IncludeTaskInputs"? How does it work? Where are those inputs then? How can I access them?

[rainersigwald]

They are logged as separate TaskParameterEventArgs instances, not directly in the TaskStartedEvent. And there's not (currently, ask if it would help :)) a separate event for them, so you would have to listen to AnyEventRaised, then filter. An example of that can be found in our binary logger:

msbuild/src/Build/Logging/BinaryLogger/BinaryLogger.cs

Line 184 in eb5ebc2

eventSource.AnyEventRaised += EventSource_AnyEventRaised;

msbuild/src/Build/Logging/BinaryLogger/BuildEventArgsWriter.cs

Line 432 in eb5ebc2

case TaskParameterEventArgs taskParameter: Write(taskParameter); break;

msbuild/src/Build/Logging/BinaryLogger/BuildEventArgsWriter.cs

Lines 524 to 536 in eb5ebc2

	private void Write(TaskParameterEventArgs e)
	{
	Write(BinaryLogRecordKind.TaskParameter);
	WriteMessageFields(e, writeMessage: false);
	Write((int)e.Kind);
	WriteDeduplicatedString(e.ItemType);
	WriteTaskItemList(e.Items, e.LogItemMetadata);
	if (e.Kind == TaskParameterMessageKind.AddItem
	|| e.Kind == TaskParameterMessageKind.TaskOutput)
	{
	CheckForFilesToEmbed(e.ItemType, e.Items);
	}
	}

[meirumeiru]

thanks a lot for this...
but... now I see, that I still don't get those TaskParameterEventArgs... I don't know if it is enough to call ((IEventSource3)eventSource).IncludeTaskInputs(); in the Initialize function... do I have to activate them also somewhere else?

[meirumeiru]

ah, ok... BuildParameters -> LogTaskInputs that's what I had to set to 'true'