Re: Python script not letting go of files

[Mike Dewhirst]

Stefan






Cheers

Mike

On 30/11/2022 1:44 am, Stefan Ram wrote:

Thank you. I should have said this has been working fine for years and years until Ubuntu 2022.04 on a new droplet running Apache/2.4.52 I will refactor it one day - especially if the script is implicated. But I think I have to learn how to use lsof first!

"Weatherby,Gerard"<gweathe...@uchc.edu>  writes:

Do any of you Python folks see any blunders in the above code along the
lines of not letting go of py files or static assets?

   No, sorry. But I had to refactor it.

   *Warning* The following code is not intended to be executed,
   it is just intended to be read by humans. It was not tested
   and, therefore, it probably contains errors. If executed, it
   may cause destruction such as deletions of files etc. Stefan
   Ram (I) does not claim any copyright for his modifications.

def attempt( task, command ):
     if trycmd( command, log ):
         print( f'task "{task}" failed.'  )
         return False # failure
     else:
         return True # success

def main():
     with open( fetchlog, 'a' )as log_:
         global log
         log = log_
         remove_site()
         del log

def remove_site():
     log.write( f"\n\nFetching {tag}" )
     if attempt( "remove site", f"sudo rm -Rf {site_root}", log ):
         get_source()

def get_source():
     if attempt( "get source", f"sudo svn export --force --username {usr} --password 
{pw} {svn_repo} {site_root}" ):
         install_requirements()

def install_requirements():
     if attempt( "install requirements", f"sudo -H pip install -r {reqfile}" ):
         repo_migrations()

def repo_migrations():
     if attempt( "run any migrations shipped from the repo", f"sudo python3 
{site_root}/manage.py migrate --noinput --settings={settings}" ):
         makemigrations()

def makemigrations():
     # shouldn't find anything
     if attempt( "makemigrations", f"sudo python3 {site_root}/manage.py 
makemigrations --noinput --settings={settings}" ):
         migrate()

def migrate():
     # should already be done
     if attempt( "migrate 2", f"sudo python3 {site_root}/manage.py migrate --noinput 
--settings={settings}" ):
         remove_static()

def remove_static():
     if attempt( "remove all static files from their Apache dir", f"sudo rm -Rf 
{static_root}/*" ):
         copy_static()

def copy_static():
     if attempt( "copy all static files to the Apache location", f"sudo python3 
{site_root}/manage.py collectstatic --noinput --settings={settings}" ):
         set_permissions()

def set_permissions():
     if attempt( "set all permissions", f"sudo {scripts}/perms_{host}.sh" ):
         service_restart()

def service_restart():
     if attempt( "restart of Apache service", f"sudo service apache2 restart" ):
         log_success()

def log_success():
     log.write( f"\nFinish {tag}\n\n" )

# main()
# sys.exit()

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