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britney2-ubuntu
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Move build_installability_tester to builder.py

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Signed-off-by: Niels Thykier <niels@thykier.net>
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Niels Thykier 8 years ago
parent 7a63784876
commit 0cc7f7a8d2
2 changed files with 91 additions and 90 deletions
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91
britney.py
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@ -185,7 +185,6 @@ import sys
import time
from collections import defaultdict
from functools import reduce
from itertools import product
from operator import attrgetter
from urllib.parse import quote
@ -196,7 +195,7 @@ from britney2 import SuiteInfo, SourcePackage, BinaryPackageId, BinaryPackage
from britney2.consts import (SOURCE, SOURCEVER, ARCHITECTURE, CONFLICTS, DEPENDS, PROVIDES, MULTIARCH)
from britney2.excuse import Excuse
from britney2.hints import HintParser
from britney2.installability.builder import InstallabilityTesterBuilder
from britney2.installability.builder import build_installability_tester
from britney2.migrationitem import MigrationItem
from britney2.policies.policy import AgePolicy, RCBugPolicy, PolicyVerdict
from britney2.utils import (old_libraries_format, undo_changes,
@ -330,7 +329,7 @@ class Britney(object):
}
self.log("Compiling Installability tester", type="I")
self._build_installability_tester(self.options.architectures)
self._inst_tester = build_installability_tester(self.binaries, self.options.architectures)
if not self.options.nuninst_cache:
self.log("Building the list of non-installable packages for the full archive", type="I")
@ -682,92 +681,6 @@ class Britney(object):
return constraints
def _build_installability_tester(self, archs):
"""Create the installability tester"""
solvers = get_dependency_solvers
binaries = self.binaries
builder = InstallabilityTesterBuilder()
for (dist, arch) in product(binaries, archs):
testing = (dist == 'testing')
for pkgname in binaries[dist][arch][0]:
pkgdata = binaries[dist][arch][0][pkgname]
pkg_id = pkgdata.pkg_id
if not builder.add_binary(pkg_id, essential=pkgdata.is_essential,
in_testing=testing):
continue
depends = []
conflicts = []
possible_dep_ranges = {}
# We do not differentiate between depends and pre-depends
if pkgdata.depends:
depends.extend(apt_pkg.parse_depends(pkgdata.depends, False))
if pkgdata.conflicts:
conflicts = apt_pkg.parse_depends(pkgdata.conflicts, False)
with builder.relation_builder(pkg_id) as relations:
for (al, dep) in [(depends, True), \
(conflicts, False)]:
for block in al:
sat = set()
for dep_dist in binaries:
dep_binaries_s_a, dep_provides_s_a = binaries[dep_dist][arch]
pkgs = solvers(block, dep_binaries_s_a, dep_provides_s_a)
for p in pkgs:
# version and arch is already interned, but solvers use
# the package name extracted from the field and it is therefore
# not interned.
pdata = dep_binaries_s_a[p]
dep_pkg_id = pdata.pkg_id
if dep:
sat.add(dep_pkg_id)
elif pkg_id != dep_pkg_id:
# if t satisfies its own
# conflicts relation, then it
# is using §7.6.2
relations.add_breaks(dep_pkg_id)
if dep:
if len(block) != 1:
relations.add_dependency_clause(sat)
else:
# This dependency might be a part
# of a version-range a la:
#
# Depends: pkg-a (>= 1),
# pkg-a (<< 2~)
#
# In such a case we want to reduce
# that to a single clause for
# efficiency.
#
# In theory, it could also happen
# with "non-minimal" dependencies
# a la:
#
# Depends: pkg-a, pkg-a (>= 1)
#
# But dpkg is known to fix that up
# at build time, so we will
# probably only see "ranges" here.
key = block[0][0]
if key in possible_dep_ranges:
possible_dep_ranges[key] &= sat
else:
possible_dep_ranges[key] = sat
if dep:
for clause in possible_dep_ranges.values():
relations.add_dependency_clause(clause)
self._inst_tester = builder.build()
# Data reading/writing methods
# ----------------------------

90
britney2/installability/builder.py
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@ -12,13 +12,101 @@
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
import apt_pkg
from collections import defaultdict
from contextlib import contextmanager
from itertools import product
from britney2.utils import ifilter_except, iter_except
from britney2.utils import ifilter_except, iter_except, get_dependency_solvers
from britney2.installability.solver import InstallabilitySolver
def build_installability_tester(binaries, archs):
"""Create the installability tester"""
solvers = get_dependency_solvers
builder = InstallabilityTesterBuilder()
for (dist, arch) in product(binaries, archs):
testing = (dist == 'testing')
for pkgname in binaries[dist][arch][0]:
pkgdata = binaries[dist][arch][0][pkgname]
pkg_id = pkgdata.pkg_id
if not builder.add_binary(pkg_id,
essential=pkgdata.is_essential,
in_testing=testing):
continue
depends = []
conflicts = []
possible_dep_ranges = {}
# We do not differentiate between depends and pre-depends
if pkgdata.depends:
depends.extend(apt_pkg.parse_depends(pkgdata.depends, False))
if pkgdata.conflicts:
conflicts = apt_pkg.parse_depends(pkgdata.conflicts, False)
with builder.relation_builder(pkg_id) as relations:
for (al, dep) in [(depends, True), (conflicts, False)]:
for block in al:
sat = set()
for dep_dist in binaries:
dep_binaries_s_a, dep_provides_s_a = binaries[dep_dist][arch]
pkgs = solvers(block, dep_binaries_s_a, dep_provides_s_a)
for p in pkgs:
# version and arch is already interned, but solvers use
# the package name extracted from the field and it is therefore
# not interned.
pdata = dep_binaries_s_a[p]
dep_pkg_id = pdata.pkg_id
if dep:
sat.add(dep_pkg_id)
elif pkg_id != dep_pkg_id:
# if t satisfies its own
# conflicts relation, then it
# is using §7.6.2
relations.add_breaks(dep_pkg_id)
if dep:
if len(block) != 1:
relations.add_dependency_clause(sat)
else:
# This dependency might be a part
# of a version-range a la:
#
# Depends: pkg-a (>= 1),
# pkg-a (<< 2~)
#
# In such a case we want to reduce
# that to a single clause for
# efficiency.
#
# In theory, it could also happen
# with "non-minimal" dependencies
# a la:
#
# Depends: pkg-a, pkg-a (>= 1)
#
# But dpkg is known to fix that up
# at build time, so we will
# probably only see "ranges" here.
key = block[0][0]
if key in possible_dep_ranges:
possible_dep_ranges[key] &= sat
else:
possible_dep_ranges[key] = sat
if dep:
for clause in possible_dep_ranges.values():
relations.add_dependency_clause(clause)
return builder.build()
class _RelationBuilder(object):
"""Private helper class to "build" relations"""

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