Other migration methods are expected to follow in future commits. Signed-off-by: Niels Thykier <niels@thykier.net>ubuntu/rebased
Niels Thykier
6 years ago
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import apt_pkg
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from britney2.utils import MigrationConstraintException, find_smooth_updateable_binaries
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class MigrationManager(object):
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def __init__(self, options, suite_info, all_binaries, pkg_universe):
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self.options = options
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self.suite_info = suite_info
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self.all_binaries = all_binaries
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self.pkg_universe = pkg_universe
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def _compute_groups(self,
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item,
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allow_smooth_updates=True,
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removals=frozenset()):
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"""Compute the groups of binaries being migrated by item
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This method will compute the binaries that will be added to,
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replaced in or removed from the target suite and which of
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the removals are smooth updatable.
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Parameters:
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* "item" is a MigrationItem
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* "allow_smooth_updates" is a boolean determining whether smooth-
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updates are permitted in this migration. When set to False,
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the "smoothbins" return value will always be the empty set.
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Any value that would have been there will now be in "rms"
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instead. (defaults: True)
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* "removals" is a set of binaries that is assumed to be
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removed at the same time as this migration (e.g. in the same
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"easy"-hint). This may affect what if some binaries are
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smooth updated or not. (defaults: empty-set)
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- Binaries must be given as ("package-name", "version",
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"architecture") tuples.
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Returns a tuple (adds, rms, smoothbins). "adds" is a set of
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binaries that will updated in or appear after the migration.
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"rms" is a set of binaries that are not smooth-updatable (or
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binaries that could be, but there is no reason to let them be
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smooth updated). "smoothbins" is set of binaries that are to
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be smooth-updated.
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Each "binary" in "adds", "rms" and "smoothbins" will be a
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tuple of ("package-name", "version", "architecture") and are
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thus tuples suitable for passing on to the
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InstallabilityTester.
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Unlike doop_source, this will not modify any data structure.
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"""
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# local copies for better performances
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source_name = item.package
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source_suite = item.suite
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target_suite = self.suite_info.target_suite
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binaries_s = source_suite.binaries
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binaries_t = target_suite.binaries
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pkg_universe = self.pkg_universe
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adds = set()
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rms = set()
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smoothbins = set()
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# remove all binary packages (if the source already exists)
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if item.architecture == 'source' or not item.is_removal:
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sources_t = target_suite.sources
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if source_name in sources_t:
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source_data = sources_t[source_name]
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bins = []
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# remove all the binaries
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# first, build a list of eligible binaries
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for pkg_id in source_data.binaries:
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binary, _, parch = pkg_id
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if item.architecture != 'source' and parch != item.architecture:
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continue
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# Work around #815995
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if item.architecture == 'source' and item.is_removal and binary not in binaries_t[parch]:
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continue
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# Do not include hijacked binaries
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if binaries_t[parch][binary].source != source_name:
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continue
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bins.append(pkg_id)
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if allow_smooth_updates and source_suite.suite_class.is_primary_source:
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smoothbins = find_smooth_updateable_binaries(bins,
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source_suite.sources[source_name],
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pkg_universe,
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target_suite,
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binaries_t,
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binaries_s,
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removals,
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self.options.smooth_updates)
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# remove all the binaries which aren't being smooth updated
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if item.architecture != 'source' and source_suite.suite_class.is_additional_source:
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# Special-case for pu/tpu:
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# if this is a binary migration from *pu, only the arch:any
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# packages will be present. ideally dak would also populate
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# the arch-indep packages, but as that's not the case we
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# must keep them around; they will not be re-added by the
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# migration so will end up missing from testing
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all_binaries = self.all_binaries
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rms = {pkg_id for pkg_id in bins
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if pkg_id not in smoothbins and all_binaries[pkg_id].architecture != 'all'}
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else:
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rms = {pkg_id for pkg_id in bins if pkg_id not in smoothbins}
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# single binary removal; used for clearing up after smooth
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# updates but not supported as a manual hint
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else:
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assert source_name in binaries_t[item.architecture]
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pkg_id = binaries_t[item.architecture][source_name].pkg_id
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rms.add(pkg_id)
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# add the new binary packages (if we are not removing)
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if not item.is_removal:
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source_data = source_suite.sources[source_name]
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source_ver_new = source_data.version
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if source_name in sources_t:
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source_data_old = sources_t[source_name]
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source_ver_old = source_data_old.version
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if apt_pkg.version_compare(source_ver_old, source_ver_new) > 0:
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raise MigrationConstraintException("trying src:%s %s, while %s has %s" % (
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source_name, source_ver_new, target_suite.name, source_ver_old))
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for pkg_id in source_data.binaries:
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binary, ver, parch = pkg_id
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if item.architecture not in ['source', parch]:
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continue
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if binaries_s[parch][binary].source != source_name:
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# This binary package has been hijacked by some other source.
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# So don't add it as part of this update.
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#
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# Also, if this isn't a source update, don't remove
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# the package that's been hijacked if it's present.
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if item.architecture != 'source':
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for rm_b, rm_v, rm_p in list(rms):
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if (rm_b, rm_p) == (binary, parch):
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rms.remove((rm_b, rm_v, rm_p))
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continue
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# Don't add the binary if it is cruft; smooth updates will keep it if possible
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if (parch not in self.options.outofsync_arches and
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source_data.version != binaries_s[parch][binary].source_version):
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continue
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if binary in binaries_t[parch]:
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oldver = binaries_t[parch][binary].version
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if apt_pkg.version_compare(oldver, ver) > 0:
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raise MigrationConstraintException("trying %s %s from src:%s %s, while %s has %s" % (
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binary, ver, source_name, source_ver_new, target_suite.name, oldver))
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adds.add(pkg_id)
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return (adds, rms, smoothbins)
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