On Fri, Jul 15, 2011 at 3:47 PM, Josh English <joshua.r.engl...@gmail.com> wrote: > Maybe not to the gurus here, but for me, this is a complex problem and I want > to make sure I understand the real problem. > > All of this is in Python 2.7 and wxPython > > I have several XML files on a shared drive. > I have applications on other machines that need to access this XML file. > These applications need to read and write to this file. > These applications need to a) be alerted to a file change, or b) monitor the > file for changes and regular intervals. > > In my code, I have XManager classes (using a Singleton pattern) that reads > each XML file into a tree (using ElementTree). The XManager class can read > the file, make changes to the tree, and write the file as needed. > > Now I'm expanding to the multiple application level, and I think I understand > what I need to do, and I'm unsure about the exact processes. > > I've been trying to have the XManagers check periodically if the XML file > they monitor has changed. Since I don't want to mess up the GUI with constant > hanging, I think I can use the thread or threading modules to create a > recurring timed check, and then I need a separate check to see if the file is > in use before reading or writing. > > I also need, I think, to have a way to check if the GUI is editing a node > before the XManager reads the file, so the thread needs to be interrupted, or > paused, because I don't know if threads would stop if a wxDialog is being > show modally or not. > > So, am I on the right track here?
I'd try watchdog[0] before I went to the trouble of rolling my own. Geremy Condra [0]: http://packages.python.org/watchdog/ -- http://mail.python.org/mailman/listinfo/python-list
