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# 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 os, re
from bb import data, utils
import bb
class NoProvider(Exception):
"""Exception raised when no provider of a build dependency can be found"""
class NoRProvider(Exception):
"""Exception raised when no provider of a runtime dependency can be found"""
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.
"""
if not pkg_pn:
pkg_pn = dataCache.pkg_pn
files = pkg_pn[pn]
priorities = {}
for f in files:
priority = dataCache.bbfile_priority[f]
if priority not in priorities:
priorities[priority] = []
priorities[priority].append(f)
p_list = priorities.keys()
p_list.sort(lambda a, b: a - b)
tmp_pn = []
for p in p_list:
tmp_pn = [priorities[p]] + tmp_pn
preferred_file = None
localdata = data.createCopy(cfgData)
bb.data.setVar('OVERRIDES', "%s:%s" % (pn, data.getVar('OVERRIDES', localdata)), localdata)
bb.data.update_data(localdata)
preferred_v = bb.data.getVar('PREFERRED_VERSION_%s' % pn, localdata, True)
if preferred_v:
m = re.match('(\d+:)*(.*)(_.*)*', preferred_v)
if m:
if m.group(1):
preferred_e = int(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 tmp_pn:
for f in file_set:
pe,pv,pr = dataCache.pkg_pepvpr[f]
if preferred_v == pv and (preferred_r == pr or preferred_r == None) and (preferred_e == pe or preferred_e == None):
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:
bb.msg.note(1, bb.msg.domain.Provider, "preferred version %s of %s not available%s" % (pv_str, pn, itemstr))
else:
bb.msg.debug(1, bb.msg.domain.Provider, "selecting %s as PREFERRED_VERSION %s of package %s%s" % (preferred_file, pv_str, pn, itemstr))
del localdata
# get highest priority file set
files = tmp_pn[0]
latest = None
latest_p = 0
latest_f = None
for file_name in files:
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
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 and previous build results
"""
eligible = []
preferred_versions = {}
# 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)
bb.msg.debug(1, bb.msg.domain.Provider, "providers for %s are: %s" % (item, pkg_pn.keys()))
for pn in pkg_pn.keys():
preferred_versions[pn] = bb.providers.findBestProvider(pn, cfgData, dataCache, pkg_pn, item)[2:4]
eligible.append(preferred_versions[pn][1])
if len(eligible) == 0:
bb.msg.error(bb.msg.domain.Provider, "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
# look to see if one of them is already staged, or marked as preferred.
# if so, bump it to the head of the queue
for p in providers:
pn = dataCache.pkg_fn[p]
pe, pv, pr = dataCache.pkg_pepvpr[p]
stamp = '%s.do_populate_staging' % dataCache.stamp[p]
if os.path.exists(stamp):
(newvers, fn) = preferred_versions[pn]
if not fn in eligible:
# package was made ineligible by already-failed check
continue
oldver = "%s-%s" % (pv, pr)
if pe > 0:
oldver = "%s:%s" % (pe, oldver)
newver = "%s-%s" % (newvers[1], newvers[2])
if newvers[0] > 0:
newver = "%s:%s" % (newvers[0], newver)
if (newver != oldver):
extra_chat = "%s (%s) already staged but upgrading to %s to satisfy %s" % (pn, oldver, newver, item)
else:
extra_chat = "Selecting already-staged %s (%s) to satisfy %s" % (pn, oldver, item)
bb.msg.note(2, bb.msg.domain.Provider, "%s" % extra_chat)
eligible.remove(fn)
eligible = [fn] + eligible
break
return eligible
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:
regexp = re.compile(pattern)
if regexp.match(rdepend):
rproviders += dataCache.packages_dynamic[pattern]
return rproviders
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