How to remove output "System start timestamp"

[dzenanz]

I have an executable which uses PlusLib. Relevant parts:

#include <igsioTrackedFrame.h>
#include <vtkIGSIOTransformRepository.h>
#include <vtkIGSIOTrackedFrameList.h>

#include <PlusConfigure.h> //must come before other Plus includes to prevent linker errors
#include <vtkPlusSequenceIO.h>
...
int main()
{
  // ...
    // read transforms from the config file
    vtkSmartPointer<vtkXMLDataElement> configRootElement =
      vtkSmartPointer<vtkXMLDataElement>::Take(vtkXMLUtilities::ReadElementFromFile(config.c_str()));
    transformRepository = vtkSmartPointer<vtkIGSIOTransformRepository>::New();
    if (transformRepository->ReadConfiguration(configRootElement) != PLUS_SUCCESS)
    {
      LOG_ERROR("Transform repository failed to read configuration");
      return EXIT_FAILURE;
    }
    // ...
    vtkPlusSequenceIO::Write(...);
    // ...
}

The vtkPlusSequenceIO::Write() call produces output in the console:

System start timestamp: 443592
Logging software version: IGSIO-1.0.0 - Win64

This has not bothered me much until now. I now need to invoke this program from a script on a series of ~350 files. As the output will be recorded into a log (a Jupyter notebook output cell), I would very much like to avoid this being repeated on each call. What is the are the best, quickest and proper ways to do this?

Versions:
IGSO: 50598c.
PlusLib: 27163f6.

[Sunderlandkyl]

If you don't need the INFO level messages, I think you could do this at the start:
vtkPlusLogger::Instance()->SetLogLevel(vtkPlusLogger::LOG_LEVEL_ERROR);

[dzenanz]

If I add that, that call itself produces the output I am trying to avoid 😞

[Sunderlandkyl]

I haven't tested it, but what about:

vtkNew<vtkPlusLogger> logger;
logger->SetLogLevel(vtkPlusLogger::LOG_LEVEL_ERROR);
logger->SetInstance(logger);

[dzenanz]

That does not compile:

1>M:\a\SPc\vtk\Common\Core\vtkNew.h(89,13): error C2440: 'initializing': cannot convert from 'vtkObject *' to 'T *'
1>        with
1>        [
1>            T=vtkPlusLogger
1>        ]
1>M:\a\SPc\vtk\Common\Core\vtkNew.h(89,13): message : Cast from base to derived requires dynamic_cast or static_cast
1>M:\a\SPc\vtk\Common\Core\vtkNew.h(88): message : while compiling class template member function 'vtkNew<vtkPlusLogger>::vtkNew(void)'
1>C:\Dev\PlusGit\SonoPlus\Tools\RoIextractor.cxx(158): message : see reference to function template instantiation 'vtkNew<vtkPlusLogger>::vtkNew(void)' being compiled
1>C:\Dev\PlusGit\SonoPlus\Tools\RoIextractor.cxx(158): message : see reference to class template instantiation 'vtkNew<vtkPlusLogger>' being compiled
1>M:\a\SPc\vtk\Common\Core\vtkNew.h(90,1): error C2439: 'vtkNew<vtkPlusLogger>::Object': member could not be initialized
1>M:\a\SPc\vtk\Common\Core\vtkNew.h(160): message : see declaration of 'vtkNew<vtkPlusLogger>::Object'

While vtkIGSIOLogger * logger = vtkIGSIOLogger::New(); fails with:

1>C:\Dev\PlusGit\SonoPlus\Tools\RoIextractor.cxx(163,52): error C2440: 'initializing': cannot convert from 'vtkObject *' to 'vtkIGSIOLogger *'
1>C:\Dev\PlusGit\SonoPlus\Tools\RoIextractor.cxx(163,29): message : Cast from base to derived requires dynamic_cast or static_cast

This gets it to compile, but it produces the console output:

    vtkIGSIOLogger * logger = vtkIGSIOLogger::Instance();
    logger->SetLogLevel(vtkIGSIOLogger::LOG_LEVEL_ERROR);
    logger->SetInstance(logger);

I guess I will trace the execution tomorrow to see where it is being output, and either find or make a way to disable it.

[dzenanz]

There was no way to avoid it without changing code. My PR is here: IGSIO/IGSIO#28.

[dzenanz]

IGSIO/IGSIO#28 fixed the problem.