Revonzy Mini Shell
#!/usr/bin/python -t
# 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 Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Copyright 2005 Duke University
"""
Dependency resolution module for yum.
"""
import os.path
import types
import logging
import rpmUtils.transaction
import rpmUtils.miscutils
from rpmUtils.arch import archDifference, canCoinstall
import misc
from misc import unique, version_tuple_to_string
from transactioninfo import TransactionMember
import rpm
from packageSack import ListPackageSack
from packages import PackageEVR
from constants import *
import logginglevels
import Errors
import warnings
warnings.simplefilter("ignore", Errors.YumFutureDeprecationWarning)
from weakref import proxy as weakref
from yum import _, _rpm_ver_atleast
try:
assert max(2, 4) == 4
except:
# Python-2.4.x doesn't have min/max ... *sigh*
def min(x, *args):
for y in args:
if x > y: x = y
return x
def max(x, *args):
for y in args:
if x < y: x = y
return x
flags = {"GT": rpm.RPMSENSE_GREATER,
"GE": rpm.RPMSENSE_EQUAL | rpm.RPMSENSE_GREATER,
"LT": rpm.RPMSENSE_LESS,
"LE": rpm.RPMSENSE_LESS | rpm.RPMSENSE_EQUAL,
"EQ": rpm.RPMSENSE_EQUAL,
None: 0 }
_rflags = {}
for f in flags:
_rflags[flags[f]] = f
class _wrap_ayum_getPkgSack:
""" This is a wrapper for calling YumBase.pkgSack because
otherwise we take a real reference through the bound method and
that is d00m (this applies to YumBase and TransactionInfo, hence why
we have a separate class). """
def __init__(self, ayum):
self.ayum = weakref(ayum)
def __call__(self):
return self.ayum.pkgSack
class _wrap_ayum_install:
""" This is a wrapper for calling YumBase.install because
otherwise we take a real reference through the bound method and
that is d00m (this applies to YumBase and TransactionInfo, hence why
we have a separate class). """
def __init__(self, ayum):
self.ayum = weakref(ayum)
def __call__(self, *args, **kwargs):
return self.ayum.install(*args, **kwargs)
class _wrap_ayum_remove:
""" This is a wrapper for calling YumBase.remove because
otherwise we take a real reference through the bound method and
that is d00m (this applies to YumBase and TransactionInfo, hence why
we have a separate class). """
def __init__(self, ayum):
self.ayum = weakref(ayum)
def __call__(self, *args, **kwargs):
return self.ayum.remove(*args, **kwargs)
class _wrap_ayum_update:
""" This is a wrapper for calling YumBase.update because
otherwise we take a real reference through the bound method and
that is d00m (this applies to YumBase and TransactionInfo, hence why
we have a separate class). """
def __init__(self, ayum):
self.ayum = weakref(ayum)
def __call__(self, *args, **kwargs):
return self.ayum.update(*args, **kwargs)
class Depsolve(object):
"""A class for resolving dependencies."""
def __init__(self):
self._ts = None
self._tsInfo = None
self.dsCallback = None
# Callback-style switch, default to legacy (hdr, file) mode
self.use_txmbr_in_callback = False
self.logger = logging.getLogger("yum.Depsolve")
self.verbose_logger = logging.getLogger("yum.verbose.Depsolve")
self.path = []
self.loops = []
self.installedFileRequires = None
self.installedUnresolvedFileRequires = None
self._missing_requires = False
def doTsSetup(self):
"""Sets up the transaction set before it is used."""
warnings.warn(_('doTsSetup() will go away in a future version of Yum.\n'),
Errors.YumFutureDeprecationWarning, stacklevel=2)
return self._getTs()
def _getTs(self, remove_only=False):
"""setup all the transaction set storage items we'll need
This can't happen in __init__ b/c we don't know our installroot
yet"""
if self._tsInfo != None and self._ts != None:
if not remove_only and self._tsInfo.pkgSack is None:
pkgSackCtor = _wrap_ayum_getPkgSack(self)
self._tsInfo.setDatabases(self.rpmdb, None, pkgSackCtor)
return
if not self.conf.installroot:
raise Errors.YumBaseError, _('Setting up TransactionSets before config class is up')
self._getTsInfo(remove_only)
self.initActionTs()
def _getTsInfo(self, remove_only=False):
""" remove_only param. says if we are going to do _only_ remove(s) in
the transaction. If so we don't need to setup the remote repos. """
if self._tsInfo is None:
self._tsInfo = self._transactionDataFactory()
if remove_only:
pkgSack = None
pkgSackCtor = None
else:
# Don't instant setup, or things like localinstall are screwed.
pkgSack = None
pkgSackCtor = _wrap_ayum_getPkgSack(self)
self._tsInfo.setDatabases(self.rpmdb, pkgSack, pkgSackCtor)
self._tsInfo.installonlypkgs = self.conf.installonlypkgs # this kinda sucks
# this REALLY sucks, sadly (needed for group conditionals)
self._tsInfo.install_method = _wrap_ayum_install(self)
self._tsInfo.update_method = _wrap_ayum_update(self)
self._tsInfo.remove_method = _wrap_ayum_remove(self)
return self._tsInfo
def _setTsInfo(self, value):
self._tsInfo = value
def _delTsInfo(self):
self._tsInfo = None
def _getActionTs(self):
if not self._ts:
self.initActionTs()
return self._ts
def initActionTs(self):
"""Set up the transaction set that will be used for all the work."""
# LOL, override rpm transaction macro.
# Must be done before rpmtsCreate()
if self.conf.override_install_langs:
old_install_langs = rpm.expandMacro("%_install_langs")
rpm.expandMacro("%define _install_langs " +
self.conf.override_install_langs)
self._ts = rpmUtils.transaction.TransactionWrapper(self.conf.installroot)
ts_flags_to_rpm = { 'noscripts': rpm.RPMTRANS_FLAG_NOSCRIPTS,
'notriggers': rpm.RPMTRANS_FLAG_NOTRIGGERS,
'nodocs': rpm.RPMTRANS_FLAG_NODOCS,
'test': rpm.RPMTRANS_FLAG_TEST,
'justdb': rpm.RPMTRANS_FLAG_JUSTDB,
'repackage': rpm.RPMTRANS_FLAG_REPACKAGE}
# This is only in newer rpm.org releases
if hasattr(rpm, 'RPMTRANS_FLAG_NOCONTEXTS'):
ts_flags_to_rpm['nocontexts'] = rpm.RPMTRANS_FLAG_NOCONTEXTS
self._ts.setFlags(0) # reset everything.
for flag in self.conf.tsflags:
if flag in ts_flags_to_rpm:
self._ts.addTsFlag(ts_flags_to_rpm[flag])
else:
self.logger.critical(_('Invalid tsflag in config file: %s'), flag)
if not self.conf.diskspacecheck:
self._add_prob_flags(rpm.RPMPROB_FILTER_DISKSPACE,
rpm.RPMPROB_FILTER_DISKNODES)
probfilter = 0
for flag in self.tsInfo.probFilterFlags:
probfilter |= flag
self._ts.setProbFilter(probfilter)
def whatProvides(self, name, flags, version):
"""Search the packageSacks for what provides the specified
feature or file.
:param name: a string specifying the file or feature to search
for
:param flags: flags related to the search
:param version: the version to search for
:return: a :class:`ListPackagaSack` containing the packages
that match the arguments, and may be empty
"""
self.verbose_logger.log(logginglevels.DEBUG_1, _('Searching pkgSack for dep: %s'),
name)
defSack = ListPackageSack(self.pkgSack.searchProvides((name, flags, version)))
return defSack
def allowedMultipleInstalls(self, po):
"""Return whether the given package object can be installed
multiple times with different versions. For example, this
would be true of kernels and kernel modules.
:param po: the package object that this function will
determine whether can be install multiple times
:return: a boolean specifying whether *po* can be installed
multiple times
"""
iopkgs = set(self.conf.installonlypkgs)
if po.name in iopkgs:
return True
for prov in po.provides_names:
if prov in iopkgs:
return True
return False
def populateTs(self, test=0, keepold=1):
"""Populate the transaction set.
:param test: unused
:param keepold: whether to keep old packages
"""
if self.dsCallback: self.dsCallback.transactionPopulation()
ts_elem = {}
if self.ts.ts is None:
self.initActionTs()
if keepold:
for te in self.ts:
epoch = te.E()
if epoch is None:
epoch = '0'
pkginfo = (te.N(), te.A(), epoch, te.V(), te.R())
if te.Type() == 1:
mode = 'i'
elif te.Type() == 2:
mode = 'e'
ts_elem[(pkginfo, mode)] = 1
for txmbr in self.tsInfo.getMembers():
self.verbose_logger.log(logginglevels.DEBUG_3, _('Member: %s'), txmbr)
if txmbr.ts_state in ['u', 'i']:
if (txmbr.pkgtup, 'i') in ts_elem:
continue
rpmfile = txmbr.po.localPkg()
if os.path.exists(rpmfile):
hdr = txmbr.po.returnHeaderFromPackage()
else:
self.downloadHeader(txmbr.po)
hdr = txmbr.po.returnLocalHeader()
if txmbr.ts_state == 'u':
if self.allowedMultipleInstalls(txmbr.po):
self.verbose_logger.log(logginglevels.DEBUG_2,
_('%s converted to install'), txmbr.po)
txmbr.ts_state = 'i'
txmbr.output_state = TS_INSTALL
# New-style callback with just txmbr instead of full headers?
if self.use_txmbr_in_callback:
cbkey = txmbr
else:
cbkey = (hdr, rpmfile)
self.ts.addInstall(hdr, cbkey, txmbr.ts_state)
self.verbose_logger.log(logginglevels.DEBUG_1,
_('Adding Package %s in mode %s'), txmbr.po, txmbr.ts_state)
if self.dsCallback:
dscb_ts_state = txmbr.ts_state
if dscb_ts_state == 'u' and txmbr.downgrades:
dscb_ts_state = 'd'
self.dsCallback.pkgAdded(txmbr.pkgtup, dscb_ts_state)
elif txmbr.ts_state in ['e']:
if (txmbr.pkgtup, txmbr.ts_state) in ts_elem:
continue
self.ts.addErase(txmbr.po.idx)
if self.dsCallback:
if txmbr.downgraded_by:
continue
self.dsCallback.pkgAdded(txmbr.pkgtup, 'e')
self.verbose_logger.log(logginglevels.DEBUG_1,
_('Removing Package %s'), txmbr.po)
def _dscb_procReq(self, po, niceformatneed):
""" Call the callback for processing requires, call the nicest one
available. """
if not self.dsCallback:
return
if hasattr(self.dsCallback, 'procReqPo'):
self.dsCallback.procReqPo(po, niceformatneed)
else:
self.dsCallback.procReq(po.name, niceformatneed)
def _processReq(self, po, requirement):
"""processes a Requires dep from the resolveDeps functions, returns a tuple
of (CheckDeps, missingdep, conflicts, errors) the last item is an array
of error messages"""
errormsgs = []
needname, flags, needversion = requirement
niceformatneed = rpmUtils.miscutils.formatRequire(needname, needversion, flags)
self.verbose_logger.log(logginglevels.DEBUG_1, _('%s requires: %s'), po, niceformatneed)
self._dscb_procReq(po, niceformatneed)
try:
if po.repo.id != "installed":
CheckDeps, missingdep = self._requiringFromTransaction(po, requirement, errormsgs)
else:
CheckDeps, missingdep = self._requiringFromInstalled(po, requirement, errormsgs)
# Check packages with problems
if missingdep:
self.po_with_problems.add((po,self._working_po,errormsgs[-1]))
except Errors.DepError,e:
# FIXME: This is a hack, it don't solve the problem
# of tries to update to a package the have been removed from the
# pkgSack because of dep problems.
# The real solution is to remove the package from the updates, when
# it is remove from the pkgSack
self.po_with_problems.add((po,self._working_po,str(e)))
CheckDeps = 1
missingdep = 0
return (CheckDeps, missingdep, errormsgs)
@staticmethod
def _prco_req_nfv2req(rn, rf, rv):
return (rn, flags[rf], version_tuple_to_string(rv))
def _prco_req2req(self, req):
return self._prco_req_nfv2req(req[0], req[1], req[2])
def _err_missing_requires(self, reqPo, reqTup):
self._missing_requires = True
if hasattr(self.dsCallback, 'format_missing_requires'):
msg = self.dsCallback.format_missing_requires(reqPo, reqTup)
if msg is not None: # PK
return self.dsCallback.format_missing_requires(reqPo, reqTup)
(needname, needflags, needversion) = reqTup
ui_req = rpmUtils.miscutils.formatRequire(needname, needversion,
needflags)
return _('%s requires %s') % (reqPo, ui_req)
def _requiringFromInstalled(self, requiringPo, requirement, errorlist):
"""processes the dependency resolution for a dep where the requiring
package is installed"""
checkdeps = 0
missingdep = 0
if self.tsInfo.getMembersWithState(requiringPo.pkgtup, TS_REMOVE_STATES):
return checkdeps, missingdep
name, arch, epoch, ver, rel = requiringPo.pkgtup
needname, needflags, needversion = requirement
niceformatneed = rpmUtils.miscutils.formatRequire(needname, needversion, needflags)
# we must first find out why the requirement is no longer there
# we must find out what provides/provided it from the rpmdb (if anything)
# then check to see if that thing is being acted upon by the transaction set
# if it is then we need to find out what is being done to it and act accordingly
needmode = None # mode in the transaction of the needed pkg (if any)
needpo = None
providers = []
if (needname, needflags, needversion) in self.cheaterlookup:
self.verbose_logger.log(logginglevels.DEBUG_2, _('Needed Require has already been looked up, cheating'))
cheater_po = self.cheaterlookup[(needname, needflags, needversion)]
providers = [cheater_po]
elif self.rpmdb.contains(name=needname):
txmbrs = self.tsInfo.matchNaevr(name=needname)
for txmbr in txmbrs:
providers.append(txmbr.po)
else:
self.verbose_logger.log(logginglevels.DEBUG_2, _('Needed Require is not a package name. Looking up: %s'), niceformatneed)
providers = self.rpmdb.getProvides(needname, needflags, needversion)
for inst_po in providers:
self._working_po = inst_po # store the last provider
inst_str = '%s.%s %s:%s-%s' % inst_po.pkgtup
(i_n, i_a, i_e, i_v, i_r) = inst_po.pkgtup
self.verbose_logger.log(logginglevels.DEBUG_2,
_('Potential Provider: %s'), inst_str)
thismode = self.tsInfo.getMode(name=i_n, arch=i_a,
epoch=i_e, ver=i_v, rel=i_r)
if thismode is None and i_n in self.conf.exactarchlist:
# check for mode by the same name+arch
thismode = self.tsInfo.getMode(name=i_n, arch=i_a)
if thismode is None and i_n not in self.conf.exactarchlist:
# check for mode by just the name
thismode = self.tsInfo.getMode(name=i_n)
# if this package is being obsoleted, it's just like if it's
# being upgraded as far as checking for other providers
if thismode is None:
if filter(lambda x: x.obsoleted_by,
self.tsInfo.matchNaevr(i_n, i_a, i_e, i_v, i_r)):
thismode = 'u'
if thismode is not None:
needmode = thismode
self.cheaterlookup[(needname, needflags, needversion)] = inst_po
self.verbose_logger.log(logginglevels.DEBUG_2, _('Mode is %s for provider of %s: %s'),
needmode, niceformatneed, inst_str)
break
self.verbose_logger.log(logginglevels.DEBUG_2, _('Mode for pkg providing %s: %s'),
niceformatneed, needmode)
if needmode in ['ud']: # the thing it needs is being updated or obsoleted away
# try to update the requiring package in hopes that all this problem goes away :(
self.verbose_logger.log(logginglevels.DEBUG_2, _('Trying to update %s to resolve dep'), requiringPo)
# if the required pkg was updated, not obsoleted, then try to
# only update the requiring po
origobs = self.conf.obsoletes
self.conf.obsoletes = 0
txmbrs = self.update(po=requiringPo, requiringPo=requiringPo)
self.conf.obsoletes = origobs
def _check_update_worked(txmbrs, obs=False):
# Old code assumed that if there was an update, we were good:
# if txmbrs: return True
# ..however we have a problem when foo-1 and foo-2 both require
# bar-1, and bar-2 is being installed. If the req. is identical
# then we'll skip checking it in _checkInstall(), so we need to
# check it here.
for txmbr in txmbrs:
if obs or txmbr.name == requiringPo.name:
n,f,v = requirement
creq = (n, _rflags[f],
rpmUtils.miscutils.stringToVersion(v))
# If it's identical ... checkInstall will skip it.
if creq not in txmbr.po.requires:
return True
return False
if not _check_update_worked(txmbrs):
txmbrs = self.update(po=requiringPo, requiringPo=requiringPo)
if not _check_update_worked(txmbrs, obs=True):
msg = self._err_missing_requires(requiringPo, requirement)
self.verbose_logger.log(logginglevels.DEBUG_2, _('No update paths found for %s. Failure!'), requiringPo)
return self._requiringFromTransaction(requiringPo, requirement, errorlist)
checkdeps = 1
if needmode in ['od']: # the thing it needs is being updated or obsoleted away
# try to update the requiring package in hopes that all this problem goes away :(
self.verbose_logger.log(logginglevels.DEBUG_2, _('Trying to update %s to resolve dep'), requiringPo)
txmbrs = self.update(po=requiringPo, requiringPo=requiringPo)
fixed = False
if not txmbrs:
msg = self._err_missing_requires(requiringPo, requirement)
self.verbose_logger.log(logginglevels.DEBUG_2, _('No update paths found for %s. Failure due to requirement: %s!'), requiringPo, msg)
else:
req_lookup = (needname, needflags,
rpmUtils.miscutils.stringToVersion(needversion))
for txmbr in txmbrs:
# This works for upgrades, and for obsoletes, on one side.
# Also catches upgrades that don't work on the other.
if txmbr.output_state in TS_INSTALL_STATES:
if txmbr.po.checkPrco('requires', req_lookup):
fixed = False
break
else:
fixed = True
if txmbrs and not fixed:
msg = self._err_missing_requires(requiringPo, requirement)
self.verbose_logger.log(logginglevels.DEBUG_2, _("Update for %s. Doesn't fix requirement: %s!"), requiringPo, msg)
if not fixed:
return self._requiringFromTransaction(requiringPo, requirement, errorlist)
checkdeps = 1
if needmode in ['e']:
self.verbose_logger.log(logginglevels.DEBUG_2, _('TSINFO: %s package requiring %s marked as erase'),
requiringPo, needname)
txmbrs = self.remove(po=requiringPo)
for txmbr in txmbrs:
txmbr.setAsDep(po=inst_po)
checkdeps = 1
if needmode in ['i', 'u']:
newupdates = self.update(name=name, epoch=epoch, version=ver, release=rel,
requiringPo=requiringPo)
txmbrs = self.tsInfo.getMembersWithState(requiringPo.pkgtup, TS_REMOVE_STATES)
if newupdates and txmbrs:
if txmbrs[0].output_state == TS_OBSOLETED:
self.verbose_logger.log(logginglevels.DEBUG_2, _('TSINFO: Obsoleting %s with %s to resolve dep.'),
requiringPo, txmbrs[0].obsoleted_by[0])
else:
self.verbose_logger.log(logginglevels.DEBUG_2, _('TSINFO: Updating %s to resolve dep.'), requiringPo)
# If the requirement is still there, try and solve it again
# so we don't lose it
for pkg in txmbrs[0].updated_by:
if requirement in map(self._prco_req2req, pkg.returnPrco('requires')):
return True, missingdep + self._requiringFromTransaction(pkg, requirement, errorlist)[1]
checkdeps = True
return checkdeps, missingdep
self.verbose_logger.log(logginglevels.DEBUG_2, _('Cannot find an update path for dep for: %s'), niceformatneed)
return self._requiringFromTransaction(requiringPo, requirement, errorlist)
if needmode is None:
reqpkg = (name, ver, rel, None)
if self.pkgSack is None:
return self._requiringFromTransaction(requiringPo, requirement, errorlist)
else:
msg = self._err_missing_requires(requiringPo, requirement)
self.verbose_logger.log(logginglevels.DEBUG_2, msg)
checkdeps = 0
missingdep = 1
errorlist.append(msg)
return checkdeps, missingdep
def _quickWhatProvides(self, name, flags, version):
if self._last_req is None:
return False
if flags == 0:
flags = None
if type(version) in (types.StringType, types.NoneType, types.UnicodeType):
(r_e, r_v, r_r) = rpmUtils.miscutils.stringToVersion(version)
elif type(version) in (types.TupleType, types.ListType): # would this ever be a ListType?
(r_e, r_v, r_r) = version
# Quick lookup, lots of reqs for one pkg:
po = self._last_req
if po.checkPrco('provides', (name, flags, (r_e, r_v, r_r))):
self.verbose_logger.debug(_('Quick matched %s to require for %s'), po, name)
return True
return False
def _requiringFromTransaction(self, requiringPo, requirement, errorlist):
"""processes the dependency resolution for a dep where requiring
package is in the transaction set"""
(name, arch, epoch, version, release) = requiringPo.pkgtup
(needname, needflags, needversion) = requirement
checkdeps = 0
missingdep = 0
upgraded = {}
#~ - if it's not available from some repository:
#~ - mark as unresolveable.
#
#~ - if it's available from some repo:
#~ - if there is an another version of the package currently installed then
# - if the other version is marked in the transaction set
# - if it's marked as erase
# - mark the dep as unresolveable
# - if it's marked as update or install
# - check if the version for this requirement:
# - if it is higher
# - mark this version to be updated/installed
# - remove the other version from the transaction set
# - tell the transaction set to be rebuilt
# - if it is lower
# - mark the dep as unresolveable
# - if they are the same
# - be confused but continue
if self._quickWhatProvides(needname, needflags, needversion):
return checkdeps, missingdep
provSack = self.whatProvides(needname, needflags, needversion)
# get rid of things that are already in the rpmdb - b/c it's pointless to use them here
for pkg in provSack.returnPackages():
if self.rpmdb.contains(po=pkg): # is it already installed?
self.verbose_logger.log(logginglevels.DEBUG_2, _('%s is in providing packages but it is already installed, removing.'), pkg)
provSack.delPackage(pkg)
continue
# we need to check to see, if we have anything similar to it (name-wise)
# installed or in the ts, and this isn't a package that allows multiple installs
# then if it's newer, fine - continue on, if not, then we're unresolveable
# cite it and exit
tspkgs = []
if not self.allowedMultipleInstalls(pkg):
# from ts
tspkgs = self.tsInfo.matchNaevr(name=pkg.name)
for tspkg in tspkgs:
if not canCoinstall(pkg.arch, tspkg.po.arch): # a comparable arch
if tspkg.po.verGT(pkg):
msg = _('Potential resolving package %s has newer instance in ts.') % pkg
self.verbose_logger.log(logginglevels.DEBUG_2, msg)
provSack.delPackage(pkg)
continue
elif tspkg.po.verLT(pkg):
upgraded.setdefault(pkg.pkgtup, []).append(tspkg.pkgtup)
# from rpmdb
dbpkgs = self.rpmdb.searchNevra(name=pkg.name)
for dbpkg in dbpkgs:
if dbpkg.verGT(pkg) and not canCoinstall(pkg.arch, dbpkg.arch):
msg = _('Potential resolving package %s has newer instance installed.') % pkg
self.verbose_logger.log(logginglevels.DEBUG_2, msg)
provSack.delPackage(pkg)
continue
if len(provSack) == 0: # unresolveable
missingdep = 1
msg = self._err_missing_requires(requiringPo, requirement)
errorlist.append(msg)
return checkdeps, missingdep
# iterate the provSack briefly, if we find the package is already in the
# tsInfo then just skip this run
for pkg in provSack.returnPackages():
(n,a,e,v,r) = pkg.pkgtup
pkgmode = self.tsInfo.getMode(name=n, arch=a, epoch=e, ver=v, rel=r)
if pkgmode in ['i', 'u']:
self.verbose_logger.log(logginglevels.DEBUG_2,
_('%s already in ts, skipping this one'), pkg)
self._last_req = pkg
return checkdeps, missingdep
# find the best one
# try updating the already install pkgs
results = []
for pkg in provSack.returnNewestByName():
tresults = self.update(requiringPo=requiringPo, name=pkg.name,
epoch=pkg.epoch, version=pkg.version,
rel=pkg.rel)
# Note that this does "interesting" things with multilib. We can
# have say A.i686 and A.x86_64, and if we hit "A.i686" first,
# .update() will actually update "A.x86_64" which will then fail
# the pkg == txmbr.po test below, but then they'll be nothing to
# update when we get around to A.x86_64 ... so this entire loop
# fails.
# Keeping results through the loop and thus. testing each pkg
# against all txmbr's from previous runs "fixes" this.
results.extend(tresults)
for txmbr in results:
if pkg == txmbr.po:
checkdeps = True
self._last_req = pkg
return checkdeps, missingdep
pkgs = provSack.returnPackages()
if len(pkgs) == 1: # Minor opt.
best = pkgs[0]
else:
# Always do compare providers for multiple pkgs, it deals with
# newest etc. ... so no need to do NewestNameArch() ... and it
# stops compare_providers from being clever.
pkgresults = self._compare_providers(pkgs, requiringPo,req=needname)
best = pkgresults[0][0]
if self.rpmdb.contains(po=best): # is it already installed?
missingdep = 1
checkdeps = 0
msg = self._err_missing_requires(requiringPo, requirement)
errorlist.append(msg)
return checkdeps, missingdep
# FIXME - why can't we look up in the transaction set for the requiringPkg
# and know what needs it that way and provide a more sensible dep structure in the txmbr
inst = self.rpmdb.searchNevra(name=best.name, arch=best.arch)
if len(inst) > 0:
self.verbose_logger.debug(_('TSINFO: Marking %s as update for %s') %(best,
requiringPo))
# FIXME: we should probably handle updating multiple packages...
txmbr = self.tsInfo.addUpdate(best, inst[0])
txmbr.setAsDep(po=requiringPo)
if 'reason' in inst[0].yumdb_info:
txmbr.reason = inst[0].yumdb_info.reason
else:
txmbr.reason = 'dep'
checkdeps = True
self._last_req = best
else:
self.verbose_logger.debug(_('TSINFO: Marking %s as install for %s'), best,
requiringPo)
reqtuple = misc.string_to_prco_tuple(needname + str(needflags) + needversion)
txmbrs = self.install(best, provides_for=reqtuple)
for txmbr in txmbrs:
txmbr.setAsDep(po=requiringPo)
txmbr.reason = "dep"
self._last_req = txmbr.po
# if we had other packages with this name.arch that we found
# before, they're not going to be installed anymore, so we
# should mark them to be re-checked
if txmbr.pkgtup in upgraded:
map(self.tsInfo.remove, upgraded[txmbr.pkgtup])
if not txmbrs:
missingdep = 1
checkdeps = 0
msg = self._err_missing_requires(requiringPo, requirement)
errorlist.append(msg)
else:
checkdeps = 1
return checkdeps, missingdep
def _dscb_procConflict(self, po, niceformatneed):
""" Call the callback for processing requires, call the nicest one
available. """
if not self.dsCallback:
return
if hasattr(self.dsCallback, 'procConflictPo'):
self.dsCallback.procConflictPo(po, niceformatneed)
else:
self.dsCallback.procConflict(po.name, niceformatneed)
def _processConflict(self, po, conflict, conflicting_po):
"""processes a Conflict dep from the resolveDeps() method"""
CheckDeps = True
errormsgs = []
needname, flags, needversion = conflict
(name, arch, epoch, ver, rel) = po.pkgtup
niceformatneed = rpmUtils.miscutils.formatRequire(needname, needversion, flags)
self._dscb_procConflict(po, niceformatneed)
length = len(self.tsInfo)
if flags & rpm.RPMSENSE_LESS:
self.update(name=conflicting_po.name)
txmbrs = self.tsInfo.getMembersWithState(conflicting_po.pkgtup, TS_REMOVE_STATES)
if len(self.tsInfo) != length and txmbrs:
return CheckDeps, errormsgs
elif flags & rpm.RPMSENSE_GREATER:
self.update(name=name)
txmbrs = self.tsInfo.getMembersWithState(po.pkgtup, TS_REMOVE_STATES)
if len(self.tsInfo) != length and txmbrs:
return CheckDeps, errormsgs
self.update(name=conflicting_po.name)
txmbrs = self.tsInfo.getMembersWithState(conflicting_po.pkgtup, TS_REMOVE_STATES)
if len(self.tsInfo) != length and txmbrs:
return CheckDeps, errormsgs
self.update(name=name)
txmbrs = self.tsInfo.getMembersWithState(po.pkgtup, TS_REMOVE_STATES)
if len(self.tsInfo) != length and txmbrs:
return CheckDeps, errormsgs
msg = '%s conflicts with %s' % (name, str(conflicting_po))
errormsgs.append(msg)
self.verbose_logger.log(logginglevels.DEBUG_1, msg)
CheckDeps = False
# report the conflicting po, so skip-broken can remove it
self.po_with_problems.add((po,conflicting_po,errormsgs[-1]))
return CheckDeps, errormsgs
def _undoDepInstalls(self):
# clean up after ourselves in the case of failures
for txmbr in self.tsInfo:
if txmbr.isDep:
self.tsInfo.remove(txmbr.pkgtup)
def prof_resolveDeps(self):
"""Call :func:`resolveDeps`, and profile the call using the
hotshot profiler.
:return: a tuple containing the result code and a list of
result strings. This is simply the return value of
:func:`resolveDeps` being passed up.
"""
fn = "anaconda.prof.0"
import hotshot, hotshot.stats
prof = hotshot.Profile(fn)
rc = prof.runcall(self.resolveDeps)
prof.close()
print "done running depcheck"
stats = hotshot.stats.load(fn)
stats.strip_dirs()
stats.sort_stats('time', 'calls')
stats.print_stats(20)
return rc
def cprof_resolveDeps(self):
"""Call :func:`resolveDeps`, and profile the call using the
cprof profiler.
:return: a tuple containing the result code and a list of
result strings. This is simply the return value of
:func:`resolveDeps` being passed up.
"""
import cProfile, pstats
prof = cProfile.Profile()
rc = prof.runcall(self.resolveDeps)
prof.dump_stats("yumprof")
print "done running depcheck"
p = pstats.Stats('yumprof')
p.strip_dirs()
p.sort_stats('time')
p.print_stats(20)
return rc
def resolveDeps(self, full_check=True, skipping_broken=False):
"""Resolve dependencies for the packages in the current
trasaction set.
:param full_check: whether to also check removes and installs,
as well as dependencies
:param skipping_broken: if this is true, a message saying that
dependency solving has finished successfully will not be output.
This is useful since if there are broken packages that are
being skipped, :func:`resolveDeps` will need to be called
multiple times before dependency solving is completely finished
"""
if not len(self.tsInfo):
return (0, [_('Success - empty transaction')])
self.po_with_problems = set()
self._working_po = None
self._last_req = None
self.tsInfo.resetResolved(hard=False)
CheckDeps = True
CheckRemoves = full_check
CheckInstalls = full_check
missingdep = 0
errors = []
if self.dsCallback: self.dsCallback.start()
depsolve_loop_count = 0
while True:
if depsolve_loop_count == (self.conf.depsolve_loop_limit or -1):
return (1, [_("Depsolving loop limit reached.")] + unique(errors))
depsolve_loop_count += 1
CheckDeps = True
# check Requires
while CheckDeps:
self.cheaterlookup = {}
if self.dsCallback: self.dsCallback.tscheck()
CheckDeps, checkinstalls, checkremoves, missing = self._resolveRequires(errors)
CheckInstalls |= checkinstalls
CheckRemoves |= checkremoves
# check global FileRequires
self._working_po = None # reset the working po
if CheckRemoves:
CheckRemoves = False
for po, dep in self._checkFileRequires():
(checkdep, missing, errormsgs) = self._processReq(po, dep)
CheckDeps |= checkdep
errors += errormsgs
if CheckDeps:
if self.dsCallback: self.dsCallback.restartLoop()
self.verbose_logger.log(logginglevels.DEBUG_1, _('Restarting Loop'))
continue
# check Conflicts
self._working_po = None # reset the working po
if CheckInstalls:
CheckInstalls = False
for conflict in self._checkConflicts():
(checkdep, errormsgs) = self._processConflict(*conflict)
CheckDeps |= checkdep
errors += errormsgs
if checkdep:
break # The next conflict might be the same pkg
if True: # Always have to check obsoletes...
if self._checkObsoletes():
CheckDeps = True
CheckRemoves = True
self._last_req = None
if CheckDeps:
if self.dsCallback: self.dsCallback.restartLoop()
self.verbose_logger.log(logginglevels.DEBUG_1, _('Restarting Loop'))
continue
break
# FIXME: this doesn't belong here at all...
for txmbr in self.tsInfo.getMembers():
if self.allowedMultipleInstalls(txmbr.po) and \
txmbr.ts_state == 'u':
self.verbose_logger.log(logginglevels.DEBUG_2,
_('%s converted to install'),
txmbr.po)
txmbr.ts_state = 'i'
txmbr.output_state = TS_INSTALL
if self.dsCallback:
if not self.conf.skip_broken:
self.dsCallback.end()
elif not skipping_broken and not errors:
self.dsCallback.end()
self.verbose_logger.log(logginglevels.DEBUG_1, _('Dependency Process ending'))
self.tsInfo.changed = False
if len(errors) > 0:
errors = unique(errors)
# We immediately display this in cli, so don't show it twice.
# Plus skip-broken can get here N times. Might be worth keeping
# around for debugging?
done = set() # Same as the unique above
for po,wpo,err in self.po_with_problems:
if (po,err) in done:
continue
done.add((po, err))
self.verbose_logger.log(logginglevels.DEBUG_4,
"SKIPBROKEN: %s from %s has depsolving problems" % (po, po.repoid))
err = err.replace('\n', '\n --> ')
self.verbose_logger.log(logginglevels.DEBUG_4,"SKIPBROKEN: --> %s" % err)
return (1, errors)
if not len(self.tsInfo):
return (0, [_('Success - empty transaction')])
return (2, [_('Success - deps resolved')])
def _resolveRequires(self, errors):
any_missing = False
CheckDeps = False
CheckInstalls = False
CheckRemoves = False
# we need to check the opposite of install and remove for regular
# tsInfo members vs removed members
for txmbr in self.tsInfo.getUnresolvedMembers():
if self.dsCallback and txmbr.ts_state:
dscb_ts_state = txmbr.ts_state
if txmbr.downgrades:
dscb_ts_state = 'd'
if dscb_ts_state == 'u' and txmbr.reinstall:
dscb_ts_state = 'r'
if dscb_ts_state == 'u':
if txmbr.output_state == TS_OBSOLETING:
dscb_ts_state = 'o'
elif not txmbr.updates:
dscb_ts_state = 'i'
self.dsCallback.pkgAdded(txmbr.pkgtup, dscb_ts_state)
self.verbose_logger.log(logginglevels.DEBUG_2,
_("Checking deps for %s") %(txmbr,))
# store the primary po we currently are working on
# so we can store it in self.po_with_problems.
# it is useful when an update is breaking an require of an installed package
# then we want to know who is causing the problem, not just who is having the problem.
if not txmbr.updates and txmbr.relatedto:
self._working_po = txmbr.relatedto[0][0]
else:
self._working_po = txmbr.po
if (txmbr.output_state in TS_INSTALL_STATES) == (txmbr.po.state != None):
thisneeds = self._checkInstall(txmbr)
CheckInstalls = True
else:
thisneeds = self._checkRemove(txmbr)
CheckRemoves = True
missing_in_pkg = False
for po, dep in thisneeds:
if txmbr.downgraded_by: # Don't try to chain remove downgrades
msg = self._err_missing_requires(po, dep)
self.verbose_logger.log(logginglevels.DEBUG_2, msg)
errors.append(msg)
self.po_with_problems.add((po,self._working_po,errors[-1]))
missing_in_pkg = 1
continue
(checkdep, missing, errormsgs) = self._processReq(po, dep)
CheckDeps |= checkdep
errors += errormsgs
missing_in_pkg |= missing
if not missing_in_pkg:
self.tsInfo.markAsResolved(txmbr)
any_missing |= missing_in_pkg
return CheckDeps, CheckInstalls, CheckRemoves, any_missing
@staticmethod
def _sort_req_key(pkgtup):
""" Get a sort key for a package requires from most "narrow" to least,
this tries to ensure that if we have two reqs like
"libfoo = 1.2.3-4" and "foo-api" (which is also provided by
libxyz-foo) that we'll get just libfoo.
There are other similar cases this "handles"."""
mapper = {'EQ' : 1, 'LT' : 2, 'LE' : 3, 'GT' : 4, 'GE' : 5, None : 99}
flagscore = mapper.get(pkgtup[1], 10)
# This is pretty magic, basically we want an explicit:
#
# Requires: foo
#
# ...to happen before the implicit:
#
# Requires: libfoo.so.0()
#
# ...because sometimes the libfoo.so.0() is provided by multiple
# packages. Do we need more magic for other implicit deps. here?
namescore = 0
if pkgtup[0].startswith("lib") and \
(pkgtup[0].endswith("()") or pkgtup[0].endswith("()(64bit)")):
namescore = 99 # Processes these last
return (flagscore, namescore)
def _checkInstall(self, txmbr):
txmbr_reqs = txmbr.po.returnPrco('requires')
# if this is an update, we should check what the old
# requires were to make things faster
# Note that if the rpmdb is broken, this gets annoying. So we provide
# a way to turn it off.
oldreqs = []
if not self.conf.recheck_installed_requires:
for oldpo in txmbr.updates:
oldreqs.extend(oldpo.returnPrco('strong_requires'))
oldreqs = set(oldreqs)
ret = []
for req in sorted(txmbr_reqs, key=self._sort_req_key):
if req[0].startswith('rpmlib('):
continue
if req in oldreqs:
continue
self.verbose_logger.log(logginglevels.DEBUG_2, _("looking for %s as a requirement of %s"), req, txmbr)
provs = self.tsInfo.getProvides(*req)
# The self provides should mostly be caught before here now, but
# at least config() crack still turns up, it's not that
# expensive to just do it, and we really don't want "false positive"
# requires for compare_providers().
if not provs and not txmbr.po.inPrcoRange('provides', req):
ret.append( (txmbr.po, self._prco_req2req(req)) )
continue
#Add relationship
for po in provs:
if txmbr.name == po.name:
continue
for member in self.tsInfo.getMembersWithState(
pkgtup=po.pkgtup, output_states=TS_INSTALL_STATES):
member.setAsDep(txmbr.po, relonly=True)
return ret
def _checkRemove(self, txmbr):
po = txmbr.po
provs = po.returnPrco('provides')
# if this is an update, we should check what the new package
# provides to make things faster
newpoprovs = {}
for newpo in txmbr.updated_by + txmbr.obsoleted_by:
for p in newpo.provides:
newpoprovs[p] = 1
ret = []
# iterate over the provides of the package being removed
# and see what's actually going away
for prov in provs:
if prov[0].startswith('rpmlib('): # ignore rpmlib() provides
continue
if prov in newpoprovs:
continue
# FIXME: This is probably the best place to fix the postfix rename
# problem long term (post .21) ... see compare_providers.
for pkg, hits in self.tsInfo.getRequires(*prov).iteritems():
# See the docs, this is to make remove* "more useful".
if (self.conf.repopkgsremove_leaf_only and txmbr.repopkg and
txmbr.output_state == TS_ERASE):
cb = self.dsCallback
if cb and hasattr(cb, 'repoPkgRemoveReq'):
cb.repoPkgRemoveReq(txmbr.po, hits)
elif cb and hasattr(cb, 'removeReq'):
cb.removeReq(txmbr.po, pkg, hits)
# We don't undo anything else here ... hopefully that's
# fine.
self.tsInfo.remove(txmbr.pkgtup)
return []
if (self.conf.groupremove_leaf_only and txmbr.groups and
txmbr.output_state == TS_ERASE):
cb = self.dsCallback
if cb and hasattr(cb, 'groupRemoveReq'):
cb.groupRemoveReq(pkg, hits)
elif cb and hasattr(cb, 'removeReq'):
cb.removeReq(txmbr.po, pkg, hits)
# We don't undo anything else here ... hopefully that's
# fine.
self.tsInfo.remove(txmbr.pkgtup)
return []
if (self.conf.remove_leaf_only and
txmbr.output_state == TS_ERASE):
cb = self.dsCallback
if cb and hasattr(cb, 'removeReq'):
cb.removeReq(txmbr.po, pkg, hits)
# We don't undo anything else here ... hopefully that's
# fine.
self.tsInfo.remove(txmbr.pkgtup)
return []
for hit in hits:
# See if the update solves the problem...
found = False
for newpo in txmbr.updated_by:
if newpo.checkPrco('provides', hit):
found = True
break
if found: continue
for newpo in txmbr.obsoleted_by:
if newpo.checkPrco('provides', hit):
found = True
break
if found: continue
# It doesn't, so see what else might...
rn, rf, rv = hit
if not self.tsInfo.getProvides(rn, rf, rv):
ret.append( (pkg, self._prco_req_nfv2req(rn, rf, rv)) )
return ret
def _checkFileRequires(self):
fileRequires = set()
nfileRequires = set() # These need to be looked up in the rpmdb.
reverselookup = {}
ret = []
# generate list of file requirement in rpmdb
if self.installedFileRequires is None:
self.installedFileRequires, \
self.installedUnresolvedFileRequires, \
self.installedFileProviders = self.rpmdb.fileRequiresData()
# get file requirements from packages not deleted
todel = []
for pkgtup, files in self.installedFileRequires.iteritems():
if self._tsInfo.getMembersWithState(pkgtup, output_states=TS_REMOVE_STATES):
todel.append(pkgtup)
else:
fileRequires.update(files)
for filename in files:
reverselookup.setdefault(filename, []).append(pkgtup)
for pkgtup in todel:
del self.installedFileRequires[pkgtup]
fileRequires -= self.installedUnresolvedFileRequires
# get file requirements from new packages
for txmbr in self._tsInfo.getMembersWithState(output_states=TS_INSTALL_STATES):
files = []
for name, flag, evr in txmbr.po.requires:
if name.startswith('/'):
files.append(name)
# check if file requires was already unresolved in update
if name in self.installedUnresolvedFileRequires:
already_broken = False
for oldpo in txmbr.updates:
if oldpo.checkPrco('requires', (name, None, (None, None, None))):
already_broken = True
break
if already_broken:
continue
if name not in fileRequires:
nfileRequires.add(name)
fileRequires.add(name)
reverselookup.setdefault(name, []).append(txmbr.po.pkgtup)
self.installedFileRequires[txmbr.po.pkgtup] = files
todel = []
for fname in self.installedFileProviders:
niFP_fname = []
for pkgtup in self.installedFileProviders[fname]:
if self._tsInfo.getMembersWithState(pkgtup, output_states=TS_REMOVE_STATES):
continue
niFP_fname.append(pkgtup)
if not niFP_fname:
todel.append(fname)
continue
self.installedFileProviders[fname] = niFP_fname
for fname in todel:
del self.installedFileProviders[fname]
# check the file requires
iFP = self.installedFileProviders
for filename in fileRequires:
# In theory we need this to be:
#
# nprov, filename in iFP (or new), oprov
#
# ...this keeps the cache exactly the same as the non-cached data.
# However that also means that we'll always need the filelists, so
# we do:
#
# filename in iFP (if found return), oprov (if found return),
# nprov
#
# ...this means we'll always get the same _result_ (as we only need
# to know if _something_ provides), but our cache will be off on
# what does/doesn't provide the file.
if filename in self.installedFileProviders:
continue
oprov = self.tsInfo.getOldProvides(filename)
if oprov:
iFP.setdefault(filename, []).extend([po.pkgtup for po in oprov])
continue
nprov = self.tsInfo.getNewProvides(filename)
if nprov:
iFP.setdefault(filename, []).extend([po.pkgtup for po in nprov])
continue
if filename != os.path.realpath(filename):
realpath = os.path.realpath(filename)
nprov = self.tsInfo.getNewProvides(realpath)
if nprov:
iFP.setdefault(realpath, []).extend([po.pkgtup for po in nprov])
continue
for pkgtup in reverselookup[filename]:
po = self.tsInfo.getMembersWithState(pkgtup, TS_INSTALL_STATES)
if po:
po = po[0].po # Should only have one
else:
po = self.getInstalledPackageObject(pkgtup)
ret.append( (po, (filename, 0, '')) )
self.rpmdb.transactionCacheFileRequires(self.installedFileRequires,
self.installedUnresolvedFileRequires,
self.installedFileProviders,
ret)
return ret
def _checkConflicts(self):
ret = [ ]
cpkgs = []
for po in self.rpmdb.returnConflictPackages():
if self.tsInfo.getMembersWithState(po.pkgtup, output_states=TS_REMOVE_STATES):
continue
conflicts = po.returnPrco('conflicts')
if not conflicts: # We broke this due to dbMatch() usage.
continue
cpkgs.append(po)
for conflict in conflicts:
(r, f, v) = conflict
for conflicting_po in self.tsInfo.getNewProvides(r, f, v):
if conflicting_po.pkgtup[0] == po.pkgtup[0] and conflicting_po.pkgtup[2:] == po.pkgtup[2:]:
continue
ret.append( (po, self._prco_req_nfv2req(r, f, v),
conflicting_po) )
for txmbr in self.tsInfo.getMembersWithState(output_states=TS_INSTALL_STATES):
po = txmbr.po
done = False
for conflict in txmbr.po.returnPrco('conflicts'):
if not done:
cpkgs.append(txmbr.po)
done = True
(r, f, v) = conflict
for conflicting_po in self.tsInfo.getProvides(r, f, v):
if conflicting_po.pkgtup[0] == po.pkgtup[0] and conflicting_po.pkgtup[2:] == po.pkgtup[2:]:
continue
ret.append( (po, self._prco_req_nfv2req(r, f, v),
conflicting_po) )
if _rpm_ver_atleast((4, 9, 0)):
return ret # Don't need the conflicts cache anymore
self.rpmdb.transactionCacheConflictPackages(cpkgs)
return ret
# This is checking for installed / transaction members which
# obsolete each other. Because rpm will now auto. obs. those
# anyway (even if we have obsoletes turned off).
def _checkObsoletes(self):
opkgs = []
ret = False
def _do_obs(otxmbr):
self.tsInfo.remove(otxmbr.pkgtup)
# We need to remove an obsoleted entry that
# was maybe used to resolve something ... ?
self.pkgSack.delPackage(otxmbr.po)
self.up.delPackage(otxmbr.pkgtup)
# Remove it from the installed file requires cache
(self.installedFileRequires or {}).pop(otxmbr.pkgtup, None)
for po in self.rpmdb.returnObsoletePackages():
if self.tsInfo.getMembersWithState(po.pkgtup, output_states=TS_REMOVE_STATES):
continue
obsoletes = po.returnPrco('obsoletes')
if not obsoletes: # We broke this due to dbMatch() usage.
continue
opkgs.append(po)
for obs_name,f,v in obsoletes:
for otxmbr in self.tsInfo.matchNaevr(name=obs_name):
if not otxmbr.po.obsoletedBy([po]):
continue
if po.obsoletedBy([otxmbr.po]): # Loops, hope for rpm.
continue
msg = _('Removing %s due to obsoletes from installed %s')
self.verbose_logger.warning(msg, otxmbr, po)
_do_obs(otxmbr)
ret = True
for txmbr in self.tsInfo.getMembersWithState(None, output_states=TS_INSTALL_STATES):
done = False
for obs_n in txmbr.po.obsoletes_names:
if not done:
opkgs.append(txmbr.po)
done = True
for otxmbr in self.tsInfo.matchNaevr(name=obs_n):
if otxmbr.output_state not in TS_INSTALL_STATES:
continue
if otxmbr.po == txmbr.po:
# Not sure if we should just ignore this for
# us, or for everyone...
continue
if not otxmbr.po.obsoletedBy([txmbr.po]):
continue
if txmbr.po.obsoletedBy([otxmbr.po]):
# Have to deal with loops! Hope rpm behaves too.
continue
msg = _('Removing %s due to obsoletes from %s')
self.verbose_logger.warning(msg, otxmbr, txmbr)
_do_obs(otxmbr)
ret = True
self.rpmdb.transactionCacheObsoletePackages(opkgs)
return ret
def isPackageInstalled(self, pkgname):
"""Return whether the given package in installed.
:param pkgname: the name of the package
:return: whether the package in installed
"""
lst = self.tsInfo.matchNaevr(name = pkgname)
for txmbr in lst:
if txmbr.output_state in TS_INSTALL_STATES:
return True
if len(lst) > 0:
# if we get here then it's in the tsInfo for an erase or obsoleted
# --> not going to be installed
return False
if not self.rpmdb.contains(name=pkgname):
return False
return True
_isPackageInstalled = isPackageInstalled
def _compare_providers(self, pkgs, reqpo, req=None):
"""take the list of pkgs and score them based on the requesting package
return a dictionary of po=score"""
self.verbose_logger.log(logginglevels.DEBUG_4,
_("Running compare_providers() for %s") %(str(pkgs)))
def _common_prefix_len(x, y, minlen=2):
num = min(len(x), len(y))
for off in range(num):
if x[off] != y[off]:
return max(off, minlen)
return max(num, minlen)
def _common_sourcerpm(x, y):
if not hasattr(x, 'sourcerpm'):
return False
if not hasattr(y, 'sourcerpm'):
return False
return x.sourcerpm == y.sourcerpm
def _conflict_req(x, y):
if y is None:
return False
for ydep in y.conflicts:
if x.checkPrco('provides', ydep):
return True
return False
def _compare_arch_distance(x, y, req_compare_arch):
# take X and Y package objects
# determine which has a closer archdistance to compare_arch
# if they are equal to compare_arch, compare which is closer to the
# running arch
# return the package which is closer or None for equal, or equally useless
x_dist = archDifference(req_compare_arch, x.arch)
if self.arch.multilib: # only go to the next one if we're multilib -
if x_dist == 0: # can't really use best's arch anyway...
self.verbose_logger.log(logginglevels.DEBUG_4,
_("better arch in po %s") %(y))
return y # just try the next one - can't be much worse
y_dist = archDifference(req_compare_arch, y.arch)
if y_dist > 0 and x_dist > y_dist:
self.verbose_logger.log(logginglevels.DEBUG_4,
_("better arch in po %s") %(y))
return y
if y_dist == x_dist:
return None
return x
def _pkg2prov_version(pkg, provname):
''' This converts a package into a specific version tuple for the
required provide. The provide _must_ be '=' and epoch=None and
release=None == '0'.
If there is 0 or 2+ matches, return None.
If the req does not == the provide name, return None. '''
ret = None
for prov in pkg.provides:
(n, f, (e, v, r)) = prov
if n != provname:
continue
if f != 'EQ':
continue
if ret is not None:
return None
ret = (e or '0', v, r or '0')
return ret
# Actual start of _compare_providers().
# Do a NameArch filtering, based on repo. __cmp__
unique_nevra_pkgs = {}
for pkg in pkgs:
if (pkg.pkgtup in unique_nevra_pkgs and
unique_nevra_pkgs[pkg.pkgtup].repo <= pkg.repo):
continue
unique_nevra_pkgs[pkg.pkgtup] = pkg
pkgs = unique_nevra_pkgs.values()
pkgresults = {}
penalize = set()
for pkg in pkgs:
pkgresults[pkg] = 0
# hand this off to our plugins
self.plugins.run("compare_providers", providers_dict=pkgresults,
reqpo=reqpo)
for pkg in pkgresults.keys():
rpmdbpkgs = self.rpmdb.searchNevra(name=pkg.name)
if rpmdbpkgs:
# We only want to count things as "installed" if they are
# older than what we are comparing, because this then an update
# so we give preference. If they are newer then obsoletes/etc.
# could play a part ... this probably needs a better fix.
newest = sorted(rpmdbpkgs)[-1]
if newest.verLT(pkg):
# give pkgs which are updates just a SLIGHT edge
# we should also make sure that any pkg
# we are giving an edge to is not obsoleted by
# something else in the transaction. :(
# there are many ways I hate this - this is but one
pkgresults[pkg] += 5
elif newest.verEQ(pkg):
# We get here from bestPackagesFromList(), give a giant
# bump to stuff that is already installed.
pkgresults[pkg] += 1000
elif newest.verGT(pkg):
# if the version we're looking at is older than what we have installed
# score it down like we would an obsoleted pkg
pkgresults[pkg] -= 1024
else:
# just b/c they're not installed pkgs doesn't mean they should
# be ignored entirely. Just not preferred
pass
pkgs = pkgresults.keys()
# go through each pkg and compare to others
# if it is same skip it
# if the pkg is obsoleted by any other of the packages
# then add -1024 to its score
# don't need to look for mutual obsoletes b/c each package
# is evaluated against all the others, so mutually obsoleting
# packages will have their scores diminished equally
# compare the arch vs each other pkg
# give each time it returns with a better arch a +5
# look for common source vs the reqpo - give a +10 if it has it
# look for common_prefix_len - add the length*2 to the score
# add the negative of the length of the name to the score
lpos = {}
for po in pkgs:
for nextpo in pkgs:
if po == nextpo:
continue
# If this package isn't the latest version of said package,
# treat it like it's obsoleted. The problem here is X-1
# accidentally provides FOO, so you release X-2 without the
# provide, but X-1 is still picked over a real provider.
if po.name not in lpos:
lpos[po.name] = self.pkgSack.returnNewestByName(po.name)[:1]
if not lpos[po.name] or not po.verEQ(lpos[po.name][0]):
pkgresults[po] -= 1024
obsoleted = False
if po.obsoletedBy([nextpo]):
obsoleted = True
pkgresults[po] -= 1024
self.verbose_logger.log(logginglevels.DEBUG_4,
_("%s obsoletes %s") % (nextpo, po))
if reqpo:
arches = (reqpo.arch, self.arch.bestarch)
else:
arches = (self.arch.bestarch,)
for thisarch in arches:
res = _compare_arch_distance(po, nextpo, thisarch)
if not res:
continue
self.verbose_logger.log(logginglevels.DEBUG_4,
_('archdist compared %s to %s on %s\n Winner: %s' % (po, nextpo, thisarch, res)))
if res == po:
pkgresults[po] += 5
# End of O(N*N): for nextpo in pkgs:
# Respect the repository priority for each provider, the default is 80
pkgresults[po] += (100 - po.repo.compare_providers_priority) * 10
self.verbose_logger.log(logginglevels.DEBUG_4,
_('compare_providers_priority for %s is %s' % (po, po.repo.compare_providers_priority)))
if _common_sourcerpm(po, reqpo):
self.verbose_logger.log(logginglevels.DEBUG_4,
_('common sourcerpm %s and %s' % (po, reqpo)))
pkgresults[po] += 20
if _conflict_req(po, reqpo):
self.verbose_logger.log(logginglevels.DEBUG_4,
_('conflict req %s and %s' % (po, reqpo)))
penalize.add(po)
if self.isPackageInstalled(po.base_package_name):
self.verbose_logger.log(logginglevels.DEBUG_4,
_('base package %s is installed for %s' % (po.base_package_name, po)))
pkgresults[po] += 5 # Same as before - - but off of base package name
if reqpo:
cpl = _common_prefix_len(po.name, reqpo.name)
if cpl > 2:
self.verbose_logger.log(logginglevels.DEBUG_4,
_('common prefix of %s between %s and %s' % (cpl, po, reqpo)))
pkgresults[po] += cpl*2
if req is not None:
bestnum = max(pkgresults.values())
prov_depsolve = {}
for po in pkgs:
if pkgresults[po] != bestnum:
continue
evr = _pkg2prov_version(po, req)
if evr is None:
prov_depsolve = {}
break
prov_depsolve[po] = evr
if len(prov_depsolve) > 1:
self.verbose_logger.log(logginglevels.DEBUG_4,
_('provides vercmp: %s') % str(req))
newest = sorted(prov_depsolve,
key = lambda x: PackageEVR(*prov_depsolve[x]))
for winner in reversed(newest):
if prov_depsolve[winner] != prov_depsolve[newest[-1]]:
break
self.verbose_logger.log(logginglevels.DEBUG_4,
_(' Winner: %s') % winner)
pkgresults[winner] += 1
# If we have more than one "best", see what would happen if we picked
# each package ... ie. what things do they require that _aren't_ already
# installed/to-be-installed. In theory this can screw up due to:
# pkgA => requires pkgX
# pkgB => requires pkgY, requires pkgZ
# ...but pkgX requires 666 other things. Going recursive is
# "non-trivial" though, python != prolog. This seems to do "better"
# from simple testing though.
bestnum = max(pkgresults.values())
rec_depsolve = {}
for po in pkgs:
if pkgresults[po] != bestnum:
continue
rec_depsolve[po] = 0
if len(rec_depsolve) > 1:
for po in rec_depsolve:
fake_txmbr = TransactionMember(po)
# Note that this is just requirements, so you could also have
# 4 requires for a single package. This might be fixable, if
# needed, but given the above it's probably better to leave it
# like this.
reqs = self._checkInstall(fake_txmbr)
rec_depsolve[po] = len(reqs)
bestnum = min(rec_depsolve.values())
self.verbose_logger.log(logginglevels.DEBUG_4,
_('requires minimal: %d') % bestnum)
for po in rec_depsolve:
if rec_depsolve[po] == bestnum:
self.verbose_logger.log(logginglevels.DEBUG_4,
_(' Winner: %s') % po)
pkgresults[po] += 1
else:
num = rec_depsolve[po]
self.verbose_logger.log(logginglevels.DEBUG_4,
_(' Loser(with %d): %s') % (num, po))
# We don't want to decide to use a "shortest first", if something else
# has told us to pick something else. But we want to pick between
# multiple "best" packages. So we spike all the best packages (so
# only those can win) and then bump them down by package name length.
bestnum = max(pkgresults.values())
for po in pkgs:
if pkgresults[po] != bestnum:
continue
pkgresults[po] += 1000
pkgresults[po] += (len(po.name)*-1)
# Bump down any packages that we identified as "last-resort" in such a
# way that they all score below the worst overall score whilst keeping
# their relative differences.
shift = max(pkgresults.values()) - min(pkgresults.values()) + 1
for po in penalize:
pkgresults[po] -= shift
bestorder = sorted(pkgresults.items(),
key=lambda x: (x[1], x[0]), reverse=True)
self.verbose_logger.log(logginglevels.DEBUG_4,
_('Best Order: %s' % str(bestorder)))
return bestorder
class DepCheck(object):
"""Object that :class:`YumDepsolver` uses to see what things are
needed to close the transaction set. The attributes requires and
conflicts are lists of requires and conflicts in the current
transaction set. Each item in the lists is a :class:`Requires` or
:class:`Conflicts` object.
"""
def __init__(self):
self.requires = []
self.conflicts = []
def addRequires(self, po, req_tuple_list):
"""Create and add a :class:`Requires` object to the list of
requires.
:param po: the package object involved in the requires
:param req_tuple_list: a list of required by *po* that are
un-closed in the transaction set
"""
# fixme - do checking for duplicates or additions in here to zip things along
reqobj = Requires(po, req_tuple_list)
self.requires.append(reqobj)
def addConflicts(self, conflict_po_list, conflict_item):
"""Create and add a :class:`Conflicts` object to the list of
conflicts.
:param conflict_po_list: a list of conflicting package objects
:param conflict_item: what the conflict between the members of
*conflict_po_list is.
"""
confobj = Conflicts(conflict_po_list, conflict_item)
self.conflicts.append(confobj)
class Requires(object):
"""A pure data class for holding a package and the list of things
it requires.
"""
def __init__(self, pkg,requires):
self.pkg = pkg # po of requiring pkg
self.requires = requires # list of things it requires that are un-closed in the ts
class Conflicts(object):
"""A pure data class for holding a list packages and what the
conflict between them is.
"""
def __init__(self, pkglist, conflict):
self.pkglist = pkglist # list of conflicting package objects
self.conflict = conflict # what the conflict was between them
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