diff options
| -rw-r--r-- | src/lib/Bcfg2/Server/Plugins/Packages/Apt.py | 19 | ||||
| -rw-r--r-- | src/lib/Bcfg2/Server/Plugins/Packages/Pyapt.py | 93 | ||||
| -rw-r--r-- | src/lib/Bcfg2/Server/Plugins/Packages/__init__.py | 2 |
3 files changed, 105 insertions, 9 deletions
diff --git a/src/lib/Bcfg2/Server/Plugins/Packages/Apt.py b/src/lib/Bcfg2/Server/Plugins/Packages/Apt.py index cbbeb21eb..c3a3dc6ad 100644 --- a/src/lib/Bcfg2/Server/Plugins/Packages/Apt.py +++ b/src/lib/Bcfg2/Server/Plugins/Packages/Apt.py @@ -86,6 +86,16 @@ class AptSource(Source): else: return ["%s%s" % (self.rawurl, fname)] + def _get_arch(self, fname): + if not self.rawurl: + return [x + for x in fname.split('@') + if x.startswith('binary-')][0][7:] + + # RawURL entries assume that they only have one <Arch></Arch> + # element and that it is the architecture of the source. + return self.arches[0] + def read_files(self): # pylint: disable=R0912 bdeps = dict() brecs = dict() @@ -93,14 +103,7 @@ class AptSource(Source): self.pkgnames = set() self.essentialpkgs = set() for fname in self.files: - if not self.rawurl: - barch = [x - for x in fname.split('@') - if x.startswith('binary-')][0][7:] - else: - # RawURL entries assume that they only have one <Arch></Arch> - # element and that it is the architecture of the source. - barch = self.arches[0] + barch = self._get_arch(fname) if barch not in bdeps: bdeps[barch] = dict() brecs[barch] = dict() diff --git a/src/lib/Bcfg2/Server/Plugins/Packages/Pyapt.py b/src/lib/Bcfg2/Server/Plugins/Packages/Pyapt.py new file mode 100644 index 000000000..5e0eb55be --- /dev/null +++ b/src/lib/Bcfg2/Server/Plugins/Packages/Pyapt.py @@ -0,0 +1,93 @@ +""" +APT backend for :mod:`Bcfg2.Server.Plugins.Packages` using +apt_pkg python bindings. +""" + +import apt_pkg +from Bcfg2.Server.Plugins.Packages.Apt import AptCollection, AptSource + + +class PyaptCollection(AptCollection): + """ Handle collections of PyAPT sources. This is a no-op object + that simply inherits from + :class:`Bcfg2.Server.Plugins.Packages.Apt.AptCollection` and + overrides nothing. + """ + pass + + +class PyaptSource(AptSource): + """ Handle PyAPT sources """ + + def read_files(self): # pylint: disable=R0912 + bdeps = dict() + brecs = dict() + bprov = dict() + bvers = dict() + self.pkgnames = set() + self.essentialpkgs = set() + for fname in self.files: + barch = self._get_arch(fname) + if barch not in bdeps: + bdeps[barch] = dict() + brecs[barch] = dict() + bprov[barch] = dict() + + apt_pkg.init_system() + with apt_pkg.TagFile(fname) as tagfile: + for section in tagfile: + pkgname = section['Package'] + + if pkgname in bvers: + new = section['Version'] + old = bvers[pkgname] + if apt_pkg.version_compare(new, old) <= 0: + continue + + self.pkgnames.add(pkgname) + bvers[pkgname] = section['Version'] + bdeps[barch][pkgname] = [] + brecs[barch][pkgname] = [] + + if section.find_flag('Essential'): + self.essentialpkgs.add(pkgname) + + for dep_type in ['Depends', 'Pre-Depends', 'Recommends']: + dep_str = section.find(dep_type) + if dep_str is None: + continue + + vindex = 0 + for dep in apt_pkg.parse_depends(dep_str): + if len(dep) > 1: + cdeps = [cdep for (cdep, _, _) in dep] + dyn_dname = "choice-%s-%s-%s" % (pkgname, + barch, + vindex) + vindex += 1 + + if dep_type == 'Recommends': + brecs[barch][pkgname].append(dyn_dname) + else: + bdeps[barch][pkgname].append(dyn_dname) + bprov[barch][dyn_dname] = set(cdeps) + else: + (raw_dep, _, _) = dep[0] + if dep_type == 'Recommends': + brecs[barch][pkgname].append(raw_dep) + else: + bdeps[barch][pkgname].append(raw_dep) + + provides = section.find('Provides') + if provides is not None: + provided_packages = [ + pkg + for group in apt_pkg.parse_depends(provides) + for (pkg, _, _) in group] + for dname in provided_packages: + if dname not in bprov[barch]: + bprov[barch][dname] = set() + bprov[barch][dname].add(pkgname) + + self.process_files(bdeps, bprov, brecs) + read_files.__doc__ = AptSource.read_files.__doc__ diff --git a/src/lib/Bcfg2/Server/Plugins/Packages/__init__.py b/src/lib/Bcfg2/Server/Plugins/Packages/__init__.py index 1b53b1bb4..fd9131db4 100644 --- a/src/lib/Bcfg2/Server/Plugins/Packages/__init__.py +++ b/src/lib/Bcfg2/Server/Plugins/Packages/__init__.py @@ -64,7 +64,7 @@ class Packages(Bcfg2.Server.Plugin.Plugin, help="Packages backends to load", type=Bcfg2.Options.Types.comma_list, action=PackagesBackendAction, - default=['Yum', 'Apt', 'Pac', 'Pkgng']), + default=['Yum', 'Apt', 'Pac', 'Pkgng', 'Pyapt']), Bcfg2.Options.PathOption( cf=("packages", "cache"), dest="packages_cache", help="Path to the Packages cache", |