yum.callbacks

Classes for handling various callbacks.

ProcessTransBaseCallback

class yum.callbacks.ProcessTransBaseCallback

A class to handle callbacks from YumBase.processTransaction().

event(state, data=None)

Handle an event by logging it.

Parameters:

• state – a number indicating the type of callback
• data – data associated with the callback

ProcessTransNoOutputCallback

class yum.callbacks.ProcessTransNoOutputCallback

A class to handle callbacks from YumBase.processTransaction(), without logging them.

event(state, data=None)

Handle an event.

Parameters:

• state – a number indicating the type of callback
• data – data associated with the callback

DownloadBaseCallback

class yum.callbacks.DownloadBaseCallback

Bases: urlgrabber.progress.BaseMeter

This is a base class that can be extended to implement a custom download progress handler to be used with YumBase.repos.setProgressBar().

Example:

from yum.callbacks import DownloadBaseCallback

class MyDownloadCallback(  DownloadBaseCallback ):

    def updateProgress(self,name,frac,fread,ftime):
        '''
        Update the progressbar
        @param name: filename
        @param frac: Progress fracment (0 -> 1)
        @param fread: formated string containing BytesRead
        @param ftime : formated string containing remaining or elapsed time
        '''
        pct = int( frac*100 )
        print " %s : %s " % (name,pct)


if __name__ == '__main__':
    my = YumBase()
    my.doConfigSetup()
    dnlcb = MyDownloadCallback()
    my.repos.setProgressBar( dnlcb )
    for pkg in my.pkgSack:
        print pkg.name

update(amount_read, now=None)

Update the status bar.

Parameters:

• amount_read – the amount of data, in bytes, that has been read
• now – the current time in seconds since the epoch. If now is not given, the output of time.time() will be used.

updateProgress(name, frac, fread, ftime)

Update the progressbar. This method should be overridden by subclasses to implement the handler.

Parameters:

• name – the name of the filed being downloaded
• frac – number between 0 and 1 representing the fraction fraction of the file that has been downloaded
• fread – formatted string containing the number of bytes read
• ftime – formatted string containing remaining or elapsed time