lorax/src/pylorax/yumhelper.py
2011-06-22 17:12:56 -04:00

118 lines
3.9 KiB
Python

#
# yumhelper.py
#
# Copyright (C) 2010 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Red Hat Author(s): Martin Gracik <mgracik@redhat.com>
#
import logging
logger = logging.getLogger("pylorax.yumhelper")
import sys, os, re
import yum, yum.callbacks, yum.rpmtrans
import output
__all__ = ['LoraxDownloadCallback', 'LoraxTransactionCallback',
'LoraxRpmCallback']
class LoraxDownloadCallback(yum.callbacks.DownloadBaseCallback):
def __init__(self):
yum.callbacks.DownloadBaseCallback.__init__(self)
self.output = output.LoraxOutput()
pattern = "\((?P<pkgno>\d+)/(?P<total>\d+)\):\s+(?P<pkgname>.*)"
self.pattern = re.compile(pattern)
def updateProgress(self, name, frac, fread, ftime):
"""
Update the progress bar
@param name: filename
@param frac: progress fraction (0 -> 1)
@param fread: formated string containing BytesRead
@param ftime: formated string containing remaining or elapsed time
"""
match = self.pattern.match(name)
pkgno = 0
total = 0
pkgname = "error"
if match:
pkgno = int(match.group("pkgno"))
total = int(match.group("total"))
pkgname = match.group("pkgname")
info = "({0:3d}/{1:3d}) [{2:3.0f}%] downloading "
info = info.format(pkgno, total, frac * 100)
infolen, pkglen = len(info), len(pkgname)
if (infolen + pkglen) > self.output.width:
pkgname = "{0}...".format(pkgname[:self.output.width-infolen-3])
msg = "{0}<b>{1}</b>\r".format(info, pkgname)
self.output.write(msg)
if frac == 1:
self.output.write("\n")
class LoraxTransactionCallback(object):
def __init__(self):
self.output = output.LoraxOutput()
def event(self, state, data=None):
if state == yum.callbacks.PT_DOWNLOAD:
self.output.write("downloading packages\n")
elif state == yum.callbacks.PT_DOWNLOAD_PKGS:
pass
elif state == yum.callbacks.PT_GPGCHECK:
self.output.write("checking package signatures\n")
elif state == yum.callbacks.PT_TEST_TRANS:
self.output.write("running test transaction\n")
elif state == yum.callbacks.PT_TRANSACTION:
self.output.write("running transaction\n")
class LoraxRpmCallback(yum.rpmtrans.RPMBaseCallback):
def __init__(self):
yum.rpmtrans.RPMBaseCallback.__init__(self)
self.output = output.LoraxOutput()
def event(self, package, action, te_current, te_total,
ts_current, ts_total):
info = "({0:3d}/{1:3d}) [{2:3.0f}%] {3} "
info = info.format(ts_current, ts_total,
float(te_current) / float(te_total) * 100,
self.action[action].lower())
pkg = "{0}".format(package)
infolen, pkglen = len(info), len(pkg)
if (infolen + pkglen) > self.output.width:
pkg = "{0}...".format(pkg[:self.output.width-infolen-3])
msg = "{0}<b>{1}</b>\r".format(info, pkg)
self.output.write(msg)
if te_current == te_total:
self.output.write("\n")
def filelog(self, package, action):
if self.fileaction.get(action) == "Installed":
logger.debug("{0} installed successfully".format(package))