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#!/usr/bin/python
"""Assign module
Functions used for determining the package the broken lib belongs to.
"""
from __future__ import print_function
import errno
import os
import io
import re
import time
current_milli_time = lambda: int(round(time.time() * 1000))
import portage
from portage import portdb
from portage.output import bold, red, yellow, green
# Make all str conversions unicode
try:
str = unicode
except NameError:
pass
class _file_matcher(object):
"""
Compares files by basename and parent directory (device, inode),
so comparisons work regardless of directory symlinks. If a
parent directory does not exist, the realpath of the parent
directory is used instead of the (device, inode). When multiple
files share the same parent directory, stat is only called
once per directory, and the result is cached internally.
"""
def __init__(self):
self._file_ids = {}
self._added = {}
def _file_id(self, filename):
try:
return self._file_ids[filename]
except KeyError:
try:
st = os.stat(filename)
except OSError as e:
if e.errno != errno.ENOENT:
raise
file_id = (os.path.realpath(filename),)
else:
file_id = (st.st_dev, st.st_ino)
self._file_ids[filename] = file_id
return file_id
def _file_key(self, filename):
head, tail = os.path.split(filename)
key = self._file_id(head) + (tail,)
return key
def add(self, filename):
self._added[self._file_key(filename)] = filename
def intersection(self, other):
for file_key in self._added:
match = other._added.get(file_key)
if match is not None:
yield match
def assign_packages(broken, logger, settings):
''' Finds and returns packages that owns files placed in broken.
Broken is list of files
'''
stime = current_milli_time()
broken_matcher = _file_matcher()
for filename in broken:
broken_matcher.add(filename)
assigned_pkgs = set()
assigned_filenames = set()
for group in os.listdir(settings['PKG_DIR']):
grppath = settings['PKG_DIR'] + group
if not os.path.isdir(grppath):
continue
for pkg in os.listdir(grppath):
pkgpath = settings['PKG_DIR'] + group + '/' + pkg
if not os.path.isdir(pkgpath):
continue
f = pkgpath + '/CONTENTS'
if os.path.exists(f):
contents_matcher = _file_matcher()
try:
with io.open(f, 'r', encoding='utf_8') as cnt:
for line in cnt.readlines():
m = re.match('^obj (/[^ ]+)', line)
if m is not None:
contents_matcher.add(m.group(1))
except Exception as e:
logger.warning(red(' !! Failed to read ' + f))
logger.warning(red(' !! Error was:' + str(e)))
else:
for m in contents_matcher.intersection(broken_matcher):
found = group+'/'+pkg
assigned_pkgs.add(found)
assigned_filenames.add(m)
logger.info('\t' + green('* ') + m +
' -> ' + bold(found))
broken_filenames = set(broken)
orphaned = broken_filenames.difference(assigned_filenames)
ftime = current_milli_time()
logger.debug("\tassign_packages(); assigned "
"%d packages, %d orphans in %d milliseconds"
% (len(assigned_pkgs), len(orphaned), ftime-stime))
return (assigned_pkgs, orphaned)
def get_best_match(cpv, cp, logger):
"""Tries to find another version of the pkg with the same slot
as the deprecated installed version. Failing that attempt to get any version
of the same app
@param cpv: string
@param cp: string
@rtype tuple: ([cpv,...], SLOT)
"""
slot = portage.db[portage.root]["vartree"].dbapi.aux_get(cpv, ["SLOT"])[0]
logger.warning('\t%s "%s" %s.' % (yellow('* Warning:'), cpv,bold('ebuild not found.')))
logger.debug('\tget_best_match(); Looking for %s:%s' %(cp, slot))
try:
match = portdb.match('%s:%s' %(cp, slot))
except portage.exception.InvalidAtom:
match = None
if not match:
logger.warning('\t' + red('!!') + ' ' + yellow(
'Could not find ebuild for %s:%s' %(cp, slot)))
slot = ['']
match = portdb.match(cp)
if not match:
logger.warning('\t' + red('!!') + ' ' +
yellow('Could not find ebuild for ' + cp))
return match, slot
def get_slotted_cps(cpvs, logger):
"""Uses portage to reduce the cpv list into a cp:slot list and returns it
"""
from portage.versions import catpkgsplit
from portage import portdb
cps = []
for cpv in cpvs:
parts = catpkgsplit(cpv)
if not parts:
logger.warning(('\t' + red("Failed to split the following pkg: "
"%s, not a valid cat/pkg-ver" %cpv)))
continue
cp = parts[0] + '/' + parts[1]
try:
slot = portdb.aux_get(cpv, ["SLOT"])
except KeyError:
match, slot = get_best_match(cpv, cp, logger)
if not match:
logger.warning('\t' + red("Installed package: "
"%s is no longer available" %cp))
continue
if slot[0]:
cps.append(cp + ":" + slot[0])
else:
cps.append(cp)
return cps
if __name__ == '__main__':
print('Nothing to call here')
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