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forked from brl/citadel
citadel/poky/bitbake/lib/bb/providers.py

431 lines
15 KiB
Python

# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# Copyright (C) 2003, 2004 Chris Larson
# Copyright (C) 2003, 2004 Phil Blundell
# Copyright (C) 2003 - 2005 Michael 'Mickey' Lauer
# Copyright (C) 2005 Holger Hans Peter Freyther
# Copyright (C) 2005 ROAD GmbH
# Copyright (C) 2006 Richard Purdie
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import re
import logging
from bb import data, utils
from collections import defaultdict
import bb
logger = logging.getLogger("BitBake.Provider")
class NoProvider(bb.BBHandledException):
"""Exception raised when no provider of a build dependency can be found"""
class NoRProvider(bb.BBHandledException):
"""Exception raised when no provider of a runtime dependency can be found"""
class MultipleRProvider(bb.BBHandledException):
"""Exception raised when multiple providers of a runtime dependency can be found"""
def findProviders(cfgData, dataCache, pkg_pn = None):
"""
Convenience function to get latest and preferred providers in pkg_pn
"""
if not pkg_pn:
pkg_pn = dataCache.pkg_pn
# Need to ensure data store is expanded
localdata = data.createCopy(cfgData)
bb.data.expandKeys(localdata)
preferred_versions = {}
latest_versions = {}
for pn in pkg_pn:
(last_ver, last_file, pref_ver, pref_file) = findBestProvider(pn, localdata, dataCache, pkg_pn)
preferred_versions[pn] = (pref_ver, pref_file)
latest_versions[pn] = (last_ver, last_file)
return (latest_versions, preferred_versions)
def allProviders(dataCache):
"""
Find all providers for each pn
"""
all_providers = defaultdict(list)
for (fn, pn) in dataCache.pkg_fn.items():
ver = dataCache.pkg_pepvpr[fn]
all_providers[pn].append((ver, fn))
return all_providers
def sortPriorities(pn, dataCache, pkg_pn = None):
"""
Reorder pkg_pn by file priority and default preference
"""
if not pkg_pn:
pkg_pn = dataCache.pkg_pn
files = pkg_pn[pn]
priorities = {}
for f in files:
priority = dataCache.bbfile_priority[f]
preference = dataCache.pkg_dp[f]
if priority not in priorities:
priorities[priority] = {}
if preference not in priorities[priority]:
priorities[priority][preference] = []
priorities[priority][preference].append(f)
tmp_pn = []
for pri in sorted(priorities):
tmp_pref = []
for pref in sorted(priorities[pri]):
tmp_pref.extend(priorities[pri][pref])
tmp_pn = [tmp_pref] + tmp_pn
return tmp_pn
def preferredVersionMatch(pe, pv, pr, preferred_e, preferred_v, preferred_r):
"""
Check if the version pe,pv,pr is the preferred one.
If there is preferred version defined and ends with '%', then pv has to start with that version after removing the '%'
"""
if (pr == preferred_r or preferred_r == None):
if (pe == preferred_e or preferred_e == None):
if preferred_v == pv:
return True
if preferred_v != None and preferred_v.endswith('%') and pv.startswith(preferred_v[:len(preferred_v)-1]):
return True
return False
def findPreferredProvider(pn, cfgData, dataCache, pkg_pn = None, item = None):
"""
Find the first provider in pkg_pn with a PREFERRED_VERSION set.
"""
preferred_file = None
preferred_ver = None
# pn can contain '_', e.g. gcc-cross-x86_64 and an override cannot
# hence we do this manually rather than use OVERRIDES
preferred_v = cfgData.getVar("PREFERRED_VERSION_pn-%s" % pn)
if not preferred_v:
preferred_v = cfgData.getVar("PREFERRED_VERSION_%s" % pn)
if not preferred_v:
preferred_v = cfgData.getVar("PREFERRED_VERSION")
if preferred_v:
m = re.match('(\d+:)*(.*)(_.*)*', preferred_v)
if m:
if m.group(1):
preferred_e = m.group(1)[:-1]
else:
preferred_e = None
preferred_v = m.group(2)
if m.group(3):
preferred_r = m.group(3)[1:]
else:
preferred_r = None
else:
preferred_e = None
preferred_r = None
for file_set in pkg_pn:
for f in file_set:
pe, pv, pr = dataCache.pkg_pepvpr[f]
if preferredVersionMatch(pe, pv, pr, preferred_e, preferred_v, preferred_r):
preferred_file = f
preferred_ver = (pe, pv, pr)
break
if preferred_file:
break;
if preferred_r:
pv_str = '%s-%s' % (preferred_v, preferred_r)
else:
pv_str = preferred_v
if not (preferred_e is None):
pv_str = '%s:%s' % (preferred_e, pv_str)
itemstr = ""
if item:
itemstr = " (for item %s)" % item
if preferred_file is None:
logger.info("preferred version %s of %s not available%s", pv_str, pn, itemstr)
available_vers = []
for file_set in pkg_pn:
for f in file_set:
pe, pv, pr = dataCache.pkg_pepvpr[f]
ver_str = pv
if pe:
ver_str = "%s:%s" % (pe, ver_str)
if not ver_str in available_vers:
available_vers.append(ver_str)
if available_vers:
available_vers.sort()
logger.info("versions of %s available: %s", pn, ' '.join(available_vers))
else:
logger.debug(1, "selecting %s as PREFERRED_VERSION %s of package %s%s", preferred_file, pv_str, pn, itemstr)
return (preferred_ver, preferred_file)
def findLatestProvider(pn, cfgData, dataCache, file_set):
"""
Return the highest version of the providers in file_set.
Take default preferences into account.
"""
latest = None
latest_p = 0
latest_f = None
for file_name in file_set:
pe, pv, pr = dataCache.pkg_pepvpr[file_name]
dp = dataCache.pkg_dp[file_name]
if (latest is None) or ((latest_p == dp) and (utils.vercmp(latest, (pe, pv, pr)) < 0)) or (dp > latest_p):
latest = (pe, pv, pr)
latest_f = file_name
latest_p = dp
return (latest, latest_f)
def findBestProvider(pn, cfgData, dataCache, pkg_pn = None, item = None):
"""
If there is a PREFERRED_VERSION, find the highest-priority bbfile
providing that version. If not, find the latest version provided by
an bbfile in the highest-priority set.
"""
sortpkg_pn = sortPriorities(pn, dataCache, pkg_pn)
# Find the highest priority provider with a PREFERRED_VERSION set
(preferred_ver, preferred_file) = findPreferredProvider(pn, cfgData, dataCache, sortpkg_pn, item)
# Find the latest version of the highest priority provider
(latest, latest_f) = findLatestProvider(pn, cfgData, dataCache, sortpkg_pn[0])
if preferred_file is None:
preferred_file = latest_f
preferred_ver = latest
return (latest, latest_f, preferred_ver, preferred_file)
def _filterProviders(providers, item, cfgData, dataCache):
"""
Take a list of providers and filter/reorder according to the
environment variables
"""
eligible = []
preferred_versions = {}
sortpkg_pn = {}
# The order of providers depends on the order of the files on the disk
# up to here. Sort pkg_pn to make dependency issues reproducible rather
# than effectively random.
providers.sort()
# Collate providers by PN
pkg_pn = {}
for p in providers:
pn = dataCache.pkg_fn[p]
if pn not in pkg_pn:
pkg_pn[pn] = []
pkg_pn[pn].append(p)
logger.debug(1, "providers for %s are: %s", item, list(pkg_pn.keys()))
# First add PREFERRED_VERSIONS
for pn in pkg_pn:
sortpkg_pn[pn] = sortPriorities(pn, dataCache, pkg_pn)
preferred_versions[pn] = findPreferredProvider(pn, cfgData, dataCache, sortpkg_pn[pn], item)
if preferred_versions[pn][1]:
eligible.append(preferred_versions[pn][1])
# Now add latest versions
for pn in sortpkg_pn:
if pn in preferred_versions and preferred_versions[pn][1]:
continue
preferred_versions[pn] = findLatestProvider(pn, cfgData, dataCache, sortpkg_pn[pn][0])
eligible.append(preferred_versions[pn][1])
if len(eligible) == 0:
logger.error("no eligible providers for %s", item)
return 0
# If pn == item, give it a slight default preference
# This means PREFERRED_PROVIDER_foobar defaults to foobar if available
for p in providers:
pn = dataCache.pkg_fn[p]
if pn != item:
continue
(newvers, fn) = preferred_versions[pn]
if not fn in eligible:
continue
eligible.remove(fn)
eligible = [fn] + eligible
return eligible
def filterProviders(providers, item, cfgData, dataCache):
"""
Take a list of providers and filter/reorder according to the
environment variables
Takes a "normal" target item
"""
eligible = _filterProviders(providers, item, cfgData, dataCache)
prefervar = cfgData.getVar('PREFERRED_PROVIDER_%s' % item)
if prefervar:
dataCache.preferred[item] = prefervar
foundUnique = False
if item in dataCache.preferred:
for p in eligible:
pn = dataCache.pkg_fn[p]
if dataCache.preferred[item] == pn:
logger.verbose("selecting %s to satisfy %s due to PREFERRED_PROVIDERS", pn, item)
eligible.remove(p)
eligible = [p] + eligible
foundUnique = True
break
logger.debug(1, "sorted providers for %s are: %s", item, eligible)
return eligible, foundUnique
def filterProvidersRunTime(providers, item, cfgData, dataCache):
"""
Take a list of providers and filter/reorder according to the
environment variables
Takes a "runtime" target item
"""
eligible = _filterProviders(providers, item, cfgData, dataCache)
# First try and match any PREFERRED_RPROVIDER entry
prefervar = cfgData.getVar('PREFERRED_RPROVIDER_%s' % item)
foundUnique = False
if prefervar:
for p in eligible:
pn = dataCache.pkg_fn[p]
if prefervar == pn:
logger.verbose("selecting %s to satisfy %s due to PREFERRED_RPROVIDER", pn, item)
eligible.remove(p)
eligible = [p] + eligible
foundUnique = True
numberPreferred = 1
break
# If we didn't find an RPROVIDER entry, try and infer the provider from PREFERRED_PROVIDER entries
# by looking through the provides of each eligible recipe and seeing if a PREFERRED_PROVIDER was set.
# This is most useful for virtual/ entries rather than having a RPROVIDER per entry.
if not foundUnique:
# Should use dataCache.preferred here?
preferred = []
preferred_vars = []
pns = {}
for p in eligible:
pns[dataCache.pkg_fn[p]] = p
for p in eligible:
pn = dataCache.pkg_fn[p]
provides = dataCache.pn_provides[pn]
for provide in provides:
prefervar = cfgData.getVar('PREFERRED_PROVIDER_%s' % provide)
#logger.debug(1, "checking PREFERRED_PROVIDER_%s (value %s) against %s", provide, prefervar, pns.keys())
if prefervar in pns and pns[prefervar] not in preferred:
var = "PREFERRED_PROVIDER_%s = %s" % (provide, prefervar)
logger.verbose("selecting %s to satisfy runtime %s due to %s", prefervar, item, var)
preferred_vars.append(var)
pref = pns[prefervar]
eligible.remove(pref)
eligible = [pref] + eligible
preferred.append(pref)
break
numberPreferred = len(preferred)
if numberPreferred > 1:
logger.error("Trying to resolve runtime dependency %s resulted in conflicting PREFERRED_PROVIDER entries being found.\nThe providers found were: %s\nThe PREFERRED_PROVIDER entries resulting in this conflict were: %s. You could set PREFERRED_RPROVIDER_%s" % (item, preferred, preferred_vars, item))
logger.debug(1, "sorted runtime providers for %s are: %s", item, eligible)
return eligible, numberPreferred
regexp_cache = {}
def getRuntimeProviders(dataCache, rdepend):
"""
Return any providers of runtime dependency
"""
rproviders = []
if rdepend in dataCache.rproviders:
rproviders += dataCache.rproviders[rdepend]
if rdepend in dataCache.packages:
rproviders += dataCache.packages[rdepend]
if rproviders:
return rproviders
# Only search dynamic packages if we can't find anything in other variables
for pattern in dataCache.packages_dynamic:
pattern = pattern.replace('+', "\+")
if pattern in regexp_cache:
regexp = regexp_cache[pattern]
else:
try:
regexp = re.compile(pattern)
except:
logger.error("Error parsing regular expression '%s'", pattern)
raise
regexp_cache[pattern] = regexp
if regexp.match(rdepend):
rproviders += dataCache.packages_dynamic[pattern]
logger.debug(1, "Assuming %s is a dynamic package, but it may not exist" % rdepend)
return rproviders
def buildWorldTargetList(dataCache, task=None):
"""
Build package list for "bitbake world"
"""
if dataCache.world_target:
return
logger.debug(1, "collating packages for \"world\"")
for f in dataCache.possible_world:
terminal = True
pn = dataCache.pkg_fn[f]
if task and task not in dataCache.task_deps[f]['tasks']:
logger.debug(2, "World build skipping %s as task %s doesn't exist", f, task)
terminal = False
for p in dataCache.pn_provides[pn]:
if p.startswith('virtual/'):
logger.debug(2, "World build skipping %s due to %s provider starting with virtual/", f, p)
terminal = False
break
for pf in dataCache.providers[p]:
if dataCache.pkg_fn[pf] != pn:
logger.debug(2, "World build skipping %s due to both us and %s providing %s", f, pf, p)
terminal = False
break
if terminal:
dataCache.world_target.add(pn)