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britney2-ubuntu
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britney.py: Add support for multiple components

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Adds a --components command line argument (and corresponding config file
option). If specified, package info is expected to be in the usual Debian
mirror layout, ie:

   testing/source/Sources
   testing/binary-${ARCH}/Packages

(nthykier: Squashed, rebased and did some porting to Python3)
Signed-off-by: Niels Thykier <niels@thykier.net>
debian
Anthony Towns 10 years ago committed by Niels Thykier
parent e2b98872cf
commit 496e48c9a7
1 changed files with 98 additions and 43 deletions
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141
britney.py
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@ -387,6 +387,8 @@ class Britney(object):
help="do not build the non-installability status, use the cache from file")
parser.add_option("", "--print-uninst", action="store_true", dest="print_uninst", default=False,
help="just print a summary of uninstallable packages")
parser.add_option("", "--components", action="store", dest="components",
help="Sources/Packages are laid out by components listed (, sep)")
(self.options, self.args) = parser.parse_args()
# integrity checks
@ -417,6 +419,11 @@ class Britney(object):
not getattr(self.options, k.lower()):
setattr(self.options, k.lower(), v)
if getattr(self.options, "components", None):
self.options.components = [s.strip() for s in self.options.components.split(",")]
else:
self.options.components = None
if not hasattr(self.options, "heidi_delta_output"):
self.options.heidi_delta_output = self.options.heidi_output + "Delta"
@ -543,19 +550,10 @@ class Britney(object):
# Data reading/writing methods
# ----------------------------
def read_sources(self, basedir, intern=sys.intern):
"""Read the list of source packages from the specified directory
The source packages are read from the `Sources' file within the
directory specified as `basedir' parameter. Considering the
large amount of memory needed, not all the fields are loaded
in memory. The available fields are Version, Maintainer and Section.
def _read_sources_file(self, filename, sources=None, intern=sys.intern):
if sources is None:
sources = {}
The method returns a list where every item represents a source
package as a dictionary.
"""
sources = {}
filename = os.path.join(basedir, "Sources")
self.__log("Loading source packages from %s" % filename)
with open(filename, encoding='utf-8') as f:
@ -583,38 +581,37 @@ class Britney(object):
]
return sources
def read_binaries(self, basedir, distribution, arch, intern=sys.intern):
"""Read the list of binary packages from the specified directory
The binary packages are read from the `Packages_${arch}' files
within the directory specified as `basedir' parameter, replacing
${arch} with the value of the arch parameter. Considering the
large amount of memory needed, not all the fields are loaded
in memory. The available fields are Version, Source, Multi-Arch,
Depends, Conflicts, Provides and Architecture.
After reading the packages, reverse dependencies are computed
and saved in the `rdepends' keys, and the `Provides' field is
used to populate the virtual packages list.
def read_sources(self, basedir):
"""Read the list of source packages from the specified directory
The dependencies are parsed with the apt_pkg.parse_depends method,
and they are stored both as the format of its return value and
text.
The source packages are read from the `Sources' file within the
directory specified as `basedir' parameter. Considering the
large amount of memory needed, not all the fields are loaded
in memory. The available fields are Version, Maintainer and Section.
The method returns a tuple. The first element is a list where
every item represents a binary package as a dictionary; the second
element is a dictionary which maps virtual packages to real
packages that provide them.
The method returns a list where every item represents a source
package as a dictionary.
"""
packages = {}
provides = defaultdict(set)
sources = self.sources
all_binaries = self.all_binaries
if self.options.components:
sources = {}
for component in self.options.components:
filename = os.path.join(basedir, component, "source", "Sources")
self._read_sources_file(filename, sources)
else:
filename = os.path.join(basedir, "Sources")
sources = self._read_sources_file(filename)
filename = os.path.join(basedir, "Packages_%s" % arch)
return sources
def _read_packages_file(self, filename, arch, srcdist, packages=None, intern=sys.intern):
self.__log("Loading binary packages from %s" % filename)
if packages is None:
packages = {}
all_binaries = self.all_binaries
with open(filename, encoding='utf-8') as f:
Packages = apt_pkg.TagFile(f)
get_field = Packages.section.get
@ -675,20 +672,19 @@ class Britney(object):
dpkg[SOURCEVER] = intern(source[source.find("(")+1:source.find(")")])
# if the source package is available in the distribution, then register this binary package
if dpkg[SOURCE] in sources[distribution]:
if dpkg[SOURCE] in srcdist:
# There may be multiple versions of any arch:all packages
# (in unstable) if some architectures have out-of-date
# binaries. We only want to include the package in the
# source -> binary mapping once. It doesn't matter which
# of the versions we include as only the package name and
# architecture are recorded.
if pkg_id not in sources[distribution][dpkg[SOURCE]][BINARIES]:
sources[distribution][dpkg[SOURCE]][BINARIES].append(pkg_id)
if pkg_id not in srcdist[dpkg[SOURCE]][BINARIES]:
srcdist[dpkg[SOURCE]][BINARIES].append(pkg_id)
# if the source package doesn't exist, create a fake one
else:
sources[distribution][dpkg[SOURCE]] = [dpkg[SOURCEVER], 'faux', [pkg_id], None, True]
srcdist[dpkg[SOURCE]] = [dpkg[SOURCEVER], 'faux', [pkg_id], None, True]
# register virtual packages and real packages that provide them
if dpkg[PROVIDES]:
parts = apt_pkg.parse_depends(dpkg[PROVIDES], False)
nprov = []
@ -706,7 +702,6 @@ class Britney(object):
provided = intern(provided)
provided_version = intern(provided_version)
part = (provided, provided_version, intern(op))
provides[provided].add((pkg, provided_version))
nprov.append(part)
dpkg[PROVIDES] = nprov
else:
@ -719,6 +714,66 @@ class Britney(object):
else:
all_binaries[pkg_id] = dpkg
# add the resulting dictionary to the package list
packages[pkg] = dpkg
return packages
def read_binaries(self, basedir, distribution, arch):
"""Read the list of binary packages from the specified directory
The binary packages are read from the `Packages' files for `arch'.
If components are specified, the files
for each component are loaded according to the usual Debian mirror
layout.
If no components are specified, a single file named
`Packages_${arch}' is expected to be within the directory
specified as `basedir' parameter, replacing ${arch} with the
value of the arch parameter.
Considering the
large amount of memory needed, not all the fields are loaded
in memory. The available fields are Version, Source, Multi-Arch,
Depends, Conflicts, Provides and Architecture.
After reading the packages, reverse dependencies are computed
and saved in the `rdepends' keys, and the `Provides' field is
used to populate the virtual packages list.
The dependencies are parsed with the apt_pkg.parse_depends method,
and they are stored both as the format of its return value and
text.
The method returns a tuple. The first element is a list where
every item represents a binary package as a dictionary; the second
element is a dictionary which maps virtual packages to real
packages that provide them.
"""
if self.options.components:
packages = {}
for component in self.options.components:
filename = os.path.join(basedir,
component, "binary-%s" % arch, "Packages")
self._read_packages_file(filename, arch,
self.sources[distribution], packages)
else:
filename = os.path.join(basedir, "Packages_%s" % arch)
packages = self._read_packages_file(filename, arch,
self.sources[distribution])
# create provides
provides = defaultdict(set)
for pkg, dpkg in packages.items():
# register virtual packages and real packages that provide
# them
for provided_pkg, provided_version, _ in dpkg[PROVIDES]:
provides[provided_pkg].add((pkg, provided_version))
# return a tuple with the list of real and virtual packages
return (packages, provides)

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