I opened https://github.com/Pylons/pyramid/issues/3455 to track this.
On Fri, Jan 25, 2019 at 3:00 PM Michael Merickel <[email protected]> wrote: > The issue is that pserve configures logging *before* forking the children, > while in the monitor process, and then configures logging again in the > child subprocesses after forking. This is an issue and hasn't been pointed > out by anyone before. This means you always have two processes opening > those files. > > I recommend logging to stderr instead and handling file rotation and such > external to the processes themselves, however it doesn't mean this isn't a > bug. > > Possible solutions: > > 1) Do not configure logging in the parent process, or just do it using > basicConfig. Only use your logging config in the child process. This is > probably an acceptable solution but means that the logging coming from > hupper in the parent process would not use the logging formatters/handlers > that are in your config which is slightly surprising. > > 2) Keep doing what we're doing and say something about how it's not > supported. > > 3) ??? > > - Michael > > On Fri, Jan 25, 2019 at 2:46 PM Marcus Mann <[email protected]> wrote: > >> Hello! >> I am trying to setup logging. I have run into a bug. If I >> use RotatingFileHandler and try to start my pyramid setup with pserve >> --reload development.ini, it throws an error similar to this when it tries >> to rotate the file: >> >> PermissionError: [WinError 32] The process cannot access the file >> because it is being used by another process: 'C:\\var\\log\\testing.log' >> -> 'C:\\var\\log\\testing.log.1' >> >> Here is the logging portion of my development.ini: >> >> [loggers] >> keys = root, companalysis >> >> [handlers] >> keys = console, filelog, debugfilelog >> >> [formatters] >> keys = generic >> >> [logger_root] >> level = DEBUG >> handlers = console, debugfilelog >> >> [logger_companalysis] >> level = DEBUG >> handlers = filelog >> qualname = companalysis >> >> [handler_console] >> class = StreamHandler >> args = (sys.stderr,) >> level = INFO >> formatter = generic >> >> [handler_filelog] >> class=handlers.RotatingFileHandler >> level=DEBUG >> args=('/var/log/testing.log','a',1000,100) >> formatter=generic >> >> [handler_debugfilelog] >> class=handlers.RotatingFileHandler >> level=NOTSET >> args=('/var/log/toolbox_debugging.log','a',1000,100) >> formatter=generic >> >> [formatter_generic] >> format = %(asctime)s %(levelname)-5.5s >> [%(name)s:%(lineno)s][%(threadName)s] %(message)s >> >> I am on Windows 10. >> >> If I start it without the --reload tag, it works as expected. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "pylons-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/pylons-discuss/098b16e7-1955-4d21-9f4c-6a32d82fe103%40googlegroups.com >> <https://groups.google.com/d/msgid/pylons-discuss/098b16e7-1955-4d21-9f4c-6a32d82fe103%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "pylons-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/pylons-discuss/CAKdhhwFf8jbbx9zWyuwKKP8b%2BorW3K6FFKhG3GcyyuxvAKC2LQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
