---
yum/callbacks.py | 101 +++++++++++++++++++++++++++++++++--------------------
1 files changed, 63 insertions(+), 38 deletions(-)
diff --git a/yum/callbacks.py b/yum/callbacks.py
index 7ad25ce..a9a8e53 100644
--- a/yum/callbacks.py
+++ b/yum/callbacks.py
@@ -13,6 +13,8 @@
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+"""Classes for handling various callbacks."""
+
# imports
import logging
@@ -35,59 +37,79 @@ PT_MESSAGES = { PT_DOWNLOAD : "Downloading Packages",
class ProcessTransBaseCallback:
-
+ """A class to handle callbacks from
+ :func:`YumBase.processTransaction`.
+ """
def __init__(self):
self.logger =
logging.getLogger('yum.verbose.ProcessTrasactionBaseCallback')
def event(self,state,data=None):
+ """Handle an event by logging it.
+
+ :param state: a number indicating the type of callback
+ :param data: data associated with the callback
+ """
if state in PT_MESSAGES.keys():
self.logger.info(PT_MESSAGES[state])
class ProcessTransNoOutputCallback:
+ """A class to handle callbacks from
+ :func:`YumBase.processTransaction`, without logging them.
+ """
def __init__(self):
pass
def event(self,state,data=None):
+ """Handle an event.
+
+ :param state: a number indicating the type of callback
+ :param data: data associated with the callback
+ """
pass
class DownloadBaseCallback( BaseMeter ):
- """
- This is class is a base class to use by implement a download progress
- handler to be used with YumBase.repos.setProgressBar.
+ """This is a base class that can be extended to implement a custom
+ download progress handler to be used with
+ :func:`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.repos.setProgressBar( dnlcb )
- for pkg in my.pkgSack:
- print pkg.name
-
- """
+ 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
+ """
def __init__(self):
BaseMeter.__init__( self )
self.totSize = "" # Total size to download in a formatted string
(Kb, MB etc)
def update( self, amount_read, now=None ):
+ """Update the status bar.
+
+ :param amount_read: the amount of data, in bytes, that has been read
+ :param now: the current time in seconds since the epoch. If
+ *now* is not given, the output of :func:`time.time()` will
+ be used.
+ """
BaseMeter.update( self, amount_read, now )
def _do_start( self, now=None ):
@@ -130,12 +152,15 @@ class DownloadBaseCallback( BaseMeter ):
return name
def updateProgress(self,name,frac,fread,ftime):
- '''
- Update the progressbar (Overload in child class)
- @param name: filename
- @param frac: Progress fracment (0 -> 1)
- @param fread: formated string containing BytesRead
- @param ftime : formated string containing remaining or elapsed time
- '''
+ """Update the progressbar. This method should be overridden
+ by subclasses to implement the handler.
+
+ :param name: the name of the filed being downloaded
+ :param frac: number between 0 and 1 representing the fraction
+ fraction of the file that has been downloaded
+ :param fread: formatted string containing the number of bytes read
+ :param ftime: formatted string containing remaining or elapsed time
+
+ """
pass
--
1.7.5.4
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