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185 | class InstallPySideToFusion(PreLaunchHook):
"""Automatically installs Qt binding to fusion's python packages.
Check if fusion has installed PySide2 and will try to install if not.
For pipeline implementation is required to have Qt binding installed in
fusion's python packages.
"""
app_groups = {"fusion"}
order = 2
launch_types = {LaunchTypes.local}
def execute(self):
# Prelaunch hook is not crucial
try:
settings = self.data["project_settings"]["fusion"]
if not settings["hooks"]["InstallPySideToFusion"]["enabled"]:
return
self.inner_execute()
except Exception:
self.log.warning(
"Processing of {} crashed.".format(self.__class__.__name__),
exc_info=True
)
def inner_execute(self):
self.log.debug("Check for PySide2 installation.")
fusion_python3_home = self.data.get("fusion_python3_home")
if not fusion_python3_home:
self.log.warning("'fusion_python3_home' was not provided. "
"Installation of PySide2 not possible")
return
if platform.system().lower() == "windows":
exe_filenames = ["python.exe"]
else:
exe_filenames = ["python3", "python"]
for exe_filename in exe_filenames:
python_executable = os.path.join(fusion_python3_home, exe_filename)
if os.path.exists(python_executable):
break
if not os.path.exists(python_executable):
self.log.warning(
"Couldn't find python executable for fusion. {}".format(
python_executable
)
)
return
# Check if PySide2 is installed and skip if yes
if self._is_pyside_installed(python_executable):
self.log.debug("Fusion has already installed PySide2.")
return
self.log.debug("Installing PySide2.")
# Install PySide2 in fusion's python
if self._windows_require_permissions(
os.path.dirname(python_executable)):
result = self._install_pyside_windows(python_executable)
else:
result = self._install_pyside(python_executable)
if result:
self.log.info("Successfully installed PySide2 module to fusion.")
else:
self.log.warning("Failed to install PySide2 module to fusion.")
def _install_pyside_windows(self, python_executable):
"""Install PySide2 python module to fusion's python.
Installation requires administration rights that's why it is required
to use "pywin32" module which can execute command's and ask for
administration rights.
"""
try:
import win32con
import win32process
import win32event
import pywintypes
from win32comext.shell.shell import ShellExecuteEx
from win32comext.shell import shellcon
except Exception:
self.log.warning("Couldn't import \"pywin32\" modules")
return False
try:
# Parameters
# - use "-m pip" as module pip to install PySide2 and argument
# "--ignore-installed" is to force install module to fusion's
# site-packages and make sure it is binary compatible
parameters = "-m pip install --ignore-installed PySide2"
# Execute command and ask for administrator's rights
process_info = ShellExecuteEx(
nShow=win32con.SW_SHOWNORMAL,
fMask=shellcon.SEE_MASK_NOCLOSEPROCESS,
lpVerb="runas",
lpFile=python_executable,
lpParameters=parameters,
lpDirectory=os.path.dirname(python_executable)
)
process_handle = process_info["hProcess"]
win32event.WaitForSingleObject(process_handle,
win32event.INFINITE)
returncode = win32process.GetExitCodeProcess(process_handle)
return returncode == 0
except pywintypes.error:
return False
def _install_pyside(self, python_executable):
"""Install PySide2 python module to fusion's python."""
try:
# Parameters
# - use "-m pip" as module pip to install PySide2 and argument
# "--ignore-installed" is to force install module to fusion's
# site-packages and make sure it is binary compatible
env = dict(os.environ)
del env['PYTHONPATH']
args = [
python_executable,
"-m",
"pip",
"install",
"--ignore-installed",
"PySide2",
]
process = subprocess.Popen(
args, stdout=subprocess.PIPE, universal_newlines=True,
env=env
)
process.communicate()
return process.returncode == 0
except PermissionError:
self.log.warning(
"Permission denied with command:"
"\"{}\".".format(" ".join(args))
)
except OSError as error:
self.log.warning(f"OS error has occurred: \"{error}\".")
except subprocess.SubprocessError:
pass
def _is_pyside_installed(self, python_executable):
"""Check if PySide2 module is in fusion's pip list."""
args = [python_executable, "-c", "from qtpy import QtWidgets"]
process = subprocess.Popen(args,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
_, stderr = process.communicate()
stderr = stderr.decode()
if stderr:
return False
return True
def _windows_require_permissions(self, dirpath):
if platform.system().lower() != "windows":
return False
try:
# Attempt to create a temporary file in the folder
temp_file_path = os.path.join(dirpath, uuid.uuid4().hex)
with open(temp_file_path, "w"):
pass
os.remove(temp_file_path) # Clean up temporary file
return False
except PermissionError:
return True
except BaseException as exc:
print(("Failed to determine if root requires permissions."
"Unexpected error: {}").format(exc))
return False
|