feat: Raise an exception if license is inaccessible

[hpohekar]

closes #3312

Raise an exception if Ansys license is not available.

>>> from ansys.fluent.core import launch_fluent
>>> solver = launch_fluent()
pyfluent.launcher ERROR: Exception caught - InaccessibleAnsysLicense: Ansys license is inaccessible.
Traceback (most recent call last):
  File "D:\Repos\pyfluent\src\ansys\fluent\core\launcher\standalone_launcher.py", line 259, in __call__
    session = self.new_session._create_from_server_info_file(
  File "D:\Repos\pyfluent\src\ansys\fluent\core\session.py", line 289, in _create_from_server_info_file
    fluent_connection = FluentConnection(
  File "D:\Repos\pyfluent\src\ansys\fluent\core\fluent_connection.py", line 385, in __init__
    self.health_check.check_health()
  File "D:\Repos\pyfluent\src\ansys\fluent\core\services\health_check.py", line 62, in check_health
    response = self._stub.Check(request, metadata=self._metadata)
  File "C:\Users\hpohekar\AppData\Local\Programs\Python\Python310\lib\site-packages\grpc\_interceptor.py", line 277, in __call__
    response, ignored_call = self._with_call(
  File "C:\Users\hpohekar\AppData\Local\Programs\Python\Python310\lib\site-packages\grpc\_interceptor.py", line 329, in _with_call
    call = self._interceptor.intercept_unary_unary(
  File "D:\Repos\pyfluent\src\ansys\fluent\core\services\interceptors.py", line 124, in intercept_unary_unary
    return self._intercept_call(continuation, client_call_details, request)
  File "D:\Repos\pyfluent\src\ansys\fluent\core\services\interceptors.py", line 113, in _intercept_call
    if not _license_error(ex):
  File "D:\Repos\pyfluent\src\ansys\fluent\core\launcher\error_handler.py", line 18, in _license_error
    raise InaccessibleAnsysLicense()
ansys.fluent.core.launcher.error_handler.InaccessibleAnsysLicense: Ansys license is inaccessible.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\Repos\pyfluent\src\ansys\fluent\core\utils\deprecate.py", line 49, in wrapper
    return func(*args, **kwargs)
  File "D:\Repos\pyfluent\src\ansys\fluent\core\utils\deprecate.py", line 49, in wrapper
    return func(*args, **kwargs)
  File "D:\Repos\pyfluent\src\ansys\fluent\core\launcher\launcher.py", line 294, in launch_fluent
    return launcher()
  File "D:\Repos\pyfluent\src\ansys\fluent\core\launcher\standalone_launcher.py", line 300, in __call__
    raise LaunchFluentError(self._launch_cmd) from ex
ansys.fluent.core.launcher.error_handler.LaunchFluentError:
Fluent Launch string: start "" D:\ANSYSDev\vNNN\fluent\ntbin\win64\fluent.exe 3ddp -hidden -sifile=C:\Users\hpohekar\AppData\Local\Temp\serverinfo-aatujg6o.txt -nm
>>>

------------------------------------------------------------------------------------------

>>> from ansys.fluent.core import launch_fluent
>>> solver = launch_fluent(cwd=r"D:\Repos")
pyfluent.launcher ERROR: Exception caught - InaccessibleAnsysLicense: Ansys license is inaccessible.
Traceback (most recent call last):
  File "D:\Repos\pyfluent\src\ansys\fluent\core\launcher\standalone_launcher.py", line 259, in __call__
    session = self.new_session._create_from_server_info_file(
  File "D:\Repos\pyfluent\src\ansys\fluent\core\session.py", line 289, in _create_from_server_info_file
    fluent_connection = FluentConnection(
  File "D:\Repos\pyfluent\src\ansys\fluent\core\fluent_connection.py", line 385, in __init__
    self.health_check.check_health()
  File "D:\Repos\pyfluent\src\ansys\fluent\core\services\health_check.py", line 62, in check_health
    response = self._stub.Check(request, metadata=self._metadata)
  File "C:\Users\hpohekar\AppData\Local\Programs\Python\Python310\lib\site-packages\grpc\_interceptor.py", line 277, in __call__
    response, ignored_call = self._with_call(
  File "C:\Users\hpohekar\AppData\Local\Programs\Python\Python310\lib\site-packages\grpc\_interceptor.py", line 329, in _with_call
    call = self._interceptor.intercept_unary_unary(
  File "D:\Repos\pyfluent\src\ansys\fluent\core\services\interceptors.py", line 124, in intercept_unary_unary
    return self._intercept_call(continuation, client_call_details, request)
  File "D:\Repos\pyfluent\src\ansys\fluent\core\services\interceptors.py", line 113, in _intercept_call
    if not _license_error(ex):
  File "D:\Repos\pyfluent\src\ansys\fluent\core\launcher\error_handler.py", line 18, in _license_error
    raise InaccessibleAnsysLicense()
ansys.fluent.core.launcher.error_handler.InaccessibleAnsysLicense: Ansys license is inaccessible.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\Repos\pyfluent\src\ansys\fluent\core\utils\deprecate.py", line 49, in wrapper
    return func(*args, **kwargs)
  File "D:\Repos\pyfluent\src\ansys\fluent\core\utils\deprecate.py", line 49, in wrapper
    return func(*args, **kwargs)
  File "D:\Repos\pyfluent\src\ansys\fluent\core\launcher\launcher.py", line 294, in launch_fluent
    return launcher()
  File "D:\Repos\pyfluent\src\ansys\fluent\core\launcher\standalone_launcher.py", line 300, in __call__
    raise LaunchFluentError(self._launch_cmd) from ex
ansys.fluent.core.launcher.error_handler.LaunchFluentError:
Fluent Launch string: start "" D:\ANSYSDev\vNNN\fluent\ntbin\win64\fluent.exe 3ddp -hidden -sifile=C:\Users\hpohekar\AppData\Local\Temp\serverinfo-aatujg6o.txt -nm
>>>

[mkundu1]

@hpohekar Do we receive anything via transcript-streaming or errorevent in event-streaming? Licensing error would be a fatal error in server which should be automatically handled in the existing mechanism in pyfluent.

[hpohekar]

@hpohekar Do we receive anything via transcript-streaming or errorevent in event-streaming? Licensing error would be a fatal error in server which should be automatically handled in the existing mechanism in pyfluent.

I will investigate it and update you soon. Thank you.

[hpohekar]

@cj-hodgson We have discussed that handling this from the server side is better approach [T1141006].

[raj366v]

do we have solution for this..
also getting similar error while launching, only for 24R2.
for 24R1 working fine.
thanks in advance for any suggestions.

[hpohekar]

do we have solution for this.. also getting similar error while launching, only for 24R2. for 24R1 working fine. thanks in advance for any suggestions.

Please refer Ansys documentation.

[raj366v]

do we have solution for this.. also getting similar error while launching, only for 24R2. for 24R1 working fine. thanks in advance for any suggestions.

Please refer Ansys documentation.

hi @hpohekar , can you please ping me how can i resolve it
already gone through the pyfluent docs not found any solution for this