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651 lines
24 KiB
651 lines
24 KiB
# -*- coding: utf-8 -*-
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# Refactored parts from britney.py, which is/was:
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# Copyright (C) 2001-2008 Anthony Towns <ajt@debian.org>
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# Andreas Barth <aba@debian.org>
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# Fabio Tranchitella <kobold@debian.org>
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# Copyright (C) 2010-2012 Adam D. Barratt <adsb@debian.org>
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# Copyright (C) 2012 Niels Thykier <niels@thykier.net>
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#
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# New portions
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# Copyright (C) 2013 Adam D. Barratt <adsb@debian.org>
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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from functools import partial
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from datetime import datetime
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from itertools import filterfalse
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import os
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import time
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import yaml
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import errno
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from migrationitem import MigrationItem, UnversionnedMigrationItem
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from consts import (VERSION, BINARIES, PROVIDES, DEPENDS, CONFLICTS,
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ARCHITECTURE, SECTION,
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SOURCE, MAINTAINER, MULTIARCH,
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ESSENTIAL)
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def ifilter_except(container, iterable=None):
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"""Filter out elements in container
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If given an iterable it returns a filtered iterator, otherwise it
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returns a function to generate filtered iterators. The latter is
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useful if the same filter has to be (re-)used on multiple
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iterators that are not known on beforehand.
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"""
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if iterable is not None:
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return filterfalse(container.__contains__, iterable)
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return partial(filterfalse, container.__contains__)
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def ifilter_only(container, iterable=None):
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"""Filter out elements in which are not in container
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If given an iterable it returns a filtered iterator, otherwise it
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returns a function to generate filtered iterators. The latter is
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useful if the same filter has to be (re-)used on multiple
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iterators that are not known on beforehand.
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"""
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if iterable is not None:
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return filter(container.__contains__, iterable)
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return partial(filter, container.__contains__)
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# iter_except is from the "itertools" recipe
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def iter_except(func, exception, first=None):
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""" Call a function repeatedly until an exception is raised.
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Converts a call-until-exception interface to an iterator interface.
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Like __builtin__.iter(func, sentinel) but uses an exception instead
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of a sentinel to end the loop.
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Examples:
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bsddbiter = iter_except(db.next, bsddb.error, db.first)
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heapiter = iter_except(functools.partial(heappop, h), IndexError)
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dictiter = iter_except(d.popitem, KeyError)
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dequeiter = iter_except(d.popleft, IndexError)
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queueiter = iter_except(q.get_nowait, Queue.Empty)
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setiter = iter_except(s.pop, KeyError)
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"""
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try:
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if first is not None:
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yield first()
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while 1:
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yield func()
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except exception:
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pass
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def undo_changes(lundo, inst_tester, sources, binaries, all_binary_packages,
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BINARIES=BINARIES):
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"""Undoes one or more changes to testing
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* lundo is a list of (undo, item)-tuples
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* inst_tester is an InstallabilityTester
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* sources is the table of all source packages for all suites
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* binaries is the table of all binary packages for all suites
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and architectures
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The "X=X" parameters are optimizations to avoid "load global"
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in loops.
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"""
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# We do the undo process in "4 steps" and each step must be
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# fully completed for each undo-item before starting on the
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# next.
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#
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# see commit:ef71f0e33a7c3d8ef223ec9ad5e9843777e68133 and
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# #624716 for the issues we had when we did not do this.
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# STEP 1
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# undo all the changes for sources
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for (undo, item) in lundo:
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for k in undo['sources']:
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if k[0] == '-':
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del sources["testing"][k[1:]]
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else:
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sources["testing"][k] = undo['sources'][k]
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# STEP 2
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# undo all new binaries (consequence of the above)
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for (undo, item) in lundo:
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if not item.is_removal and item.package in sources[item.suite]:
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source_data = sources[item.suite][item.package]
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for pkg_id in source_data[BINARIES]:
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binary, _, arch = pkg_id
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if item.architecture in ['source', arch]:
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try:
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del binaries["testing"][arch][0][binary]
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except KeyError:
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# If this happens, pkg_id must be a cruft item that
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# was *not* migrated.
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assert source_data[VERSION] != all_binary_packages[pkg_id].version
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assert not inst_tester.any_of_these_are_in_testing((pkg_id,))
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inst_tester.remove_testing_binary(pkg_id)
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# STEP 3
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# undo all other binary package changes (except virtual packages)
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for (undo, item) in lundo:
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for p in undo['binaries']:
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binary, arch = p
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if binary[0] == "-":
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version = binaries["testing"][arch][0][binary].version
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del binaries['testing'][arch][0][binary[1:]]
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inst_tester.remove_testing_binary(binary, version, arch)
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else:
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binaries_t_a = binaries['testing'][arch][0]
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assert binary not in binaries_t_a
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pkgdata = all_binary_packages[undo['binaries'][p]]
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binaries_t_a[binary] = pkgdata
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inst_tester.add_testing_binary((binary, pkgdata.version, arch))
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# STEP 4
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# undo all changes to virtual packages
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for (undo, item) in lundo:
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for p in undo['nvirtual']:
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j, arch = p
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del binaries['testing'][arch][1][j]
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for p in undo['virtual']:
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j, arch = p
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if j[0] == '-':
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del binaries['testing'][arch][1][j[1:]]
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else:
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binaries['testing'][arch][1][j] = undo['virtual'][p]
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def old_libraries_format(libs):
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"""Format old libraries in a smart table"""
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libraries = {}
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for i in libs:
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pkg = i.package
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if pkg in libraries:
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libraries[pkg].append(i.architecture)
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else:
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libraries[pkg] = [i.architecture]
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return "\n".join(" " + k + ": " + " ".join(libraries[k]) for k in libraries) + "\n"
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def compute_reverse_tree(inst_tester, affected):
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"""Calculate the full dependency tree for a set of packages
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This method returns the full dependency tree for a given set of
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packages. The first argument is an instance of the InstallabilityTester
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and the second argument are a set of packages ids (as defined in
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the constructor of the InstallabilityTester).
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The set of affected packages will be updated in place and must
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therefore be mutable.
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"""
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remain = list(affected)
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while remain:
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pkg_id = remain.pop()
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new_pkg_ids = inst_tester.reverse_dependencies_of(pkg_id) - affected
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affected.update(new_pkg_ids)
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remain.extend(new_pkg_ids)
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return None
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def write_nuninst(filename, nuninst):
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"""Write the non-installable report
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Write the non-installable report derived from "nuninst" to the
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file denoted by "filename".
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"""
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with open(filename, 'w', encoding='utf-8') as f:
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# Having two fields with (almost) identical dates seems a bit
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# redundant.
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f.write("Built on: " + time.strftime("%Y.%m.%d %H:%M:%S %z", time.gmtime(time.time())) + "\n")
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f.write("Last update: " + time.strftime("%Y.%m.%d %H:%M:%S %z", time.gmtime(time.time())) + "\n\n")
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for k in nuninst:
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f.write("%s: %s\n" % (k, " ".join(nuninst[k])))
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def read_nuninst(filename, architectures):
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"""Read the non-installable report
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Read the non-installable report from the file denoted by
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"filename" and return it. Only architectures in "architectures"
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will be included in the report.
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"""
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nuninst = {}
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with open(filename, encoding='ascii') as f:
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for r in f:
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if ":" not in r: continue
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arch, packages = r.strip().split(":", 1)
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if arch.split("+", 1)[0] in architectures:
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nuninst[arch] = set(packages.split())
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return nuninst
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def newly_uninst(nuold, nunew):
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"""Return a nuninst statstic with only new uninstallable packages
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This method subtracts the uninstallable packages of the statistic
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"nunew" from the statistic "nuold".
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It returns a dictionary with the architectures as keys and the list
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of uninstallable packages as values.
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"""
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res = {}
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for arch in ifilter_only(nunew, nuold):
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res[arch] = [x for x in nunew[arch] if x not in nuold[arch]]
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return res
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def eval_uninst(architectures, nuninst):
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"""Return a string which represents the uninstallable packages
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This method returns a string which represents the uninstallable
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packages reading the uninstallability statistics "nuninst".
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An example of the output string is:
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* i386: broken-pkg1, broken-pkg2
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"""
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parts = []
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for arch in architectures:
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if arch in nuninst and nuninst[arch]:
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parts.append(" * %s: %s\n" % (arch,", ".join(sorted(nuninst[arch]))))
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return "".join(parts)
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def write_heidi(filename, sources_t, packages_t,
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VERSION=VERSION, SECTION=SECTION,
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sorted=sorted):
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"""Write the output HeidiResult
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This method write the output for Heidi, which contains all the
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binary packages and the source packages in the form:
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<pkg-name> <pkg-version> <pkg-architecture> <pkg-section>
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<src-name> <src-version> source <src-section>
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The file is written as "filename", it assumes all sources and
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packages in "sources_t" and "packages_t" to be the packages in
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"testing".
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The "X=X" parameters are optimizations to avoid "load global" in
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the loops.
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"""
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with open(filename, 'w', encoding='ascii') as f:
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# write binary packages
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for arch in sorted(packages_t):
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binaries = packages_t[arch][0]
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for pkg_name in sorted(binaries):
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pkg = binaries[pkg_name]
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pkgv = pkg.version
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pkgarch = pkg.architecture or 'all'
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pkgsec = pkg.section or 'faux'
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if pkg.source_version and pkgarch == 'all' and \
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pkg.source_version != sources_t[pkg.source][VERSION]:
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# when architectures are marked as "fucked", their binary
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# versions may be lower than those of the associated
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# source package in testing. the binary package list for
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# such architectures will include arch:all packages
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# matching those older versions, but we only want the
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# newer arch:all in testing
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continue
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f.write('%s %s %s %s\n' % (pkg_name, pkgv, pkgarch, pkgsec))
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# write sources
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for src_name in sorted(sources_t):
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src = sources_t[src_name]
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srcv = src[VERSION]
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srcsec = src[SECTION] or 'unknown'
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f.write('%s %s source %s\n' % (src_name, srcv, srcsec))
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def write_heidi_delta(filename, all_selected):
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"""Write the output delta
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This method writes the packages to be upgraded, in the form:
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<src-name> <src-version>
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or (if the source is to be removed):
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-<src-name> <src-version>
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The order corresponds to that shown in update_output.
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"""
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with open(filename, "w", encoding='ascii') as fd:
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fd.write("#HeidiDelta\n")
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for item in all_selected:
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prefix = ""
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if item.is_removal:
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prefix = "-"
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if item.architecture == 'source':
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fd.write('%s%s %s\n' % (prefix, item.package, item.version))
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else:
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fd.write('%s%s %s %s\n' % (prefix, item.package,
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item.version, item.architecture))
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def make_migrationitem(package, sources, VERSION=VERSION):
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"""Convert a textual package specification to a MigrationItem
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sources is a list of source packages in each suite, used to determine
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the version which should be used for the MigrationItem.
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"""
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item = UnversionnedMigrationItem(package)
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return MigrationItem("%s/%s" % (item.uvname, sources[item.suite][item.package][VERSION]))
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def write_excuses(excuselist, dest_file, output_format="yaml"):
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"""Write the excuses to dest_file
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Writes a list of excuses in a specified output_format to the
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path denoted by dest_file. The output_format can either be "yaml"
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or "legacy-html".
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"""
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if output_format == "yaml":
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with open(dest_file, 'w', encoding='utf-8') as f:
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edatalist = [e.excusedata() for e in excuselist]
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excusesdata = {
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'sources': edatalist,
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'generated-date': datetime.utcnow(),
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}
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f.write(yaml.dump(excusesdata, default_flow_style=False, allow_unicode=True))
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elif output_format == "legacy-html":
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with open(dest_file, 'w', encoding='utf-8') as f:
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f.write("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n")
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f.write("<html><head><title>excuses...</title>")
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f.write("<meta http-equiv=\"Content-Type\" content=\"text/html;charset=utf-8\"></head><body>\n")
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f.write("<p>Generated: " + time.strftime("%Y.%m.%d %H:%M:%S %z", time.gmtime(time.time())) + "</p>\n")
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f.write("<ul>\n")
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for e in excuselist:
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f.write("<li>%s" % e.html())
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f.write("</ul></body></html>\n")
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else:
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raise ValueError('Output format must be either "yaml or "legacy-html"')
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def write_sources(sources_s, filename):
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"""Write a sources file from Britney's state for a given suite
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Britney discards fields she does not care about, so the resulting
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file omits a lot of regular fields.
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"""
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key_pairs = ((VERSION, 'Version'), (SECTION, 'Section'),
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(MAINTAINER, 'Maintainer'))
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with open(filename, 'w', encoding='utf-8') as f:
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for src in sources_s:
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src_data = sources_s[src]
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output = "Package: %s\n" % src
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output += "\n".join(k + ": "+ src_data[key]
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for key, k in key_pairs if src_data[key])
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f.write(output + "\n\n")
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def relation_atom_to_string(atom):
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"""Take a parsed dependency and turn it into a string
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"""
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pkg, version, rel_op = atom
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if rel_op != '':
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if rel_op in ('<', '>'):
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# APT translate "<<" and ">>" into "<" and ">". We have
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# deparse those into the original form.
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rel_op += rel_op
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return "%s (%s %s)" % (pkg, rel_op, version)
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return pkg
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def write_controlfiles(sources, packages, suite, basedir):
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"""Write the control files
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This method writes the control files for the binary packages of all
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the architectures and for the source packages. Note that Britney
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discards a lot of fields that she does not care about. Therefore,
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these files may omit a lot of regular fields.
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"""
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sources_s = sources[suite]
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packages_s = packages[suite]
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key_pairs = ((SECTION, 'Section'), (ARCHITECTURE, 'Architecture'),
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(MULTIARCH, 'Multi-Arch'), (SOURCE, 'Source'),
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(VERSION, 'Version'), (DEPENDS, 'Depends'),
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(PROVIDES, 'Provides'), (CONFLICTS, 'Conflicts'),
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(ESSENTIAL, 'Essential'))
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for arch in packages_s:
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filename = os.path.join(basedir, 'Packages_%s' % arch)
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binaries = packages_s[arch][0]
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with open(filename, 'w', encoding='utf-8') as f:
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for pkg in binaries:
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output = "Package: %s\n" % pkg
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bin_data = binaries[pkg]
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for key, k in key_pairs:
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if not bin_data[key]:
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continue
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if key == SOURCE:
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src = bin_data.source
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if sources_s[src][MAINTAINER]:
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output += ("Maintainer: " + sources_s[src][MAINTAINER] + "\n")
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if src == pkg:
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if bin_data.source_version != bin_data.version:
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source = src + " (" + bin_data.source_version + ")"
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else: continue
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else:
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if bin_data.source_version != bin_data.version:
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source = src + " (" + bin_data.source_version + ")"
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else:
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source = src
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output += (k + ": " + source + "\n")
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elif key == PROVIDES:
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output += (k + ": " + ", ".join(relation_atom_to_string(p) for p in bin_data[key]) + "\n")
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elif key == ESSENTIAL:
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output += (k + ": " + " yes\n")
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else:
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output += (k + ": " + bin_data[key] + "\n")
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f.write(output + "\n")
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write_sources(sources_s, os.path.join(basedir, 'Sources'))
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def old_libraries(sources, packages, fucked_arches=frozenset()):
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"""Detect old libraries left in testing for smooth transitions
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This method detects old libraries which are in testing but no
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longer built from the source package: they are still there because
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other packages still depend on them, but they should be removed as
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soon as possible.
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For "fucked" architectures, outdated binaries are allowed to be in
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testing, so they are only added to the removal list if they are no longer
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in unstable.
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"""
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sources_t = sources['testing']
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testing = packages['testing']
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unstable = packages['unstable']
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removals = []
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for arch in testing:
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for pkg_name in testing[arch][0]:
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pkg = testing[arch][0][pkg_name]
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if sources_t[pkg.source][VERSION] != pkg.source_version and \
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(arch not in fucked_arches or pkg_name not in unstable[arch][0]):
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migration = "-" + "/".join((pkg_name, arch, pkg.source_version))
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removals.append(MigrationItem(migration))
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return removals
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|
def is_nuninst_asgood_generous(constraints, architectures, old, new, break_arches=frozenset()):
|
|
"""Compares the nuninst counters and constraints to see if they improved
|
|
|
|
Given a list of architectures, the previous and the current nuninst
|
|
counters, this function determines if the current nuninst counter
|
|
is better than the previous one. Optionally it also accepts a set
|
|
of "break_arches", the nuninst counter for any architecture listed
|
|
in this set are completely ignored.
|
|
|
|
If the nuninst counters are equal or better, then the constraints
|
|
are checked for regressions (ignoring break_arches).
|
|
|
|
Returns True if the new nuninst counter is better than the
|
|
previous and there are no constraint regressions (ignoring Break-archs).
|
|
Returns False otherwise.
|
|
|
|
"""
|
|
diff = 0
|
|
for arch in architectures:
|
|
if arch in break_arches:
|
|
continue
|
|
diff = diff + (len(new[arch]) - len(old[arch]))
|
|
if diff > 0:
|
|
return False
|
|
must_be_installable = constraints['keep-installable']
|
|
for arch in architectures:
|
|
if arch in break_arches:
|
|
continue
|
|
regression = new[arch] - old[arch]
|
|
if not regression.isdisjoint(must_be_installable):
|
|
return False
|
|
return True
|
|
|
|
|
|
def clone_nuninst(nuninst, packages_s, architectures):
|
|
"""Selectively deep clone nuninst
|
|
|
|
Given nuninst table, the package table for a given suite and
|
|
a list of architectures, this function will clone the nuninst
|
|
table. Only the listed architectures will be deep cloned -
|
|
the rest will only be shallow cloned.
|
|
"""
|
|
clone = nuninst.copy()
|
|
for arch in architectures:
|
|
clone[arch] = set(x for x in nuninst[arch] if x in packages_s[arch][0])
|
|
clone[arch + "+all"] = set(x for x in nuninst[arch + "+all"] if x in packages_s[arch][0])
|
|
return clone
|
|
|
|
|
|
def test_installability(inst_tester, pkg_name, pkg_id, broken, nuninst_arch):
|
|
"""Test for installability of a package on an architecture
|
|
|
|
(pkg_name, pkg_version, pkg_arch) is the package to check.
|
|
|
|
broken is the set of broken packages. If p changes
|
|
installability (e.g. goes from uninstallable to installable),
|
|
broken will be updated accordingly.
|
|
|
|
If nuninst_arch is not None then it also updated in the same
|
|
way as broken is.
|
|
"""
|
|
c = 0
|
|
r = inst_tester.is_installable(pkg_id)
|
|
if not r:
|
|
# not installable
|
|
if pkg_name not in broken:
|
|
# regression
|
|
broken.add(pkg_name)
|
|
c = -1
|
|
if nuninst_arch is not None and pkg_name not in nuninst_arch:
|
|
nuninst_arch.add(pkg_name)
|
|
else:
|
|
if pkg_name in broken:
|
|
# Improvement
|
|
broken.remove(pkg_name)
|
|
c = 1
|
|
if nuninst_arch is not None and pkg_name in nuninst_arch:
|
|
nuninst_arch.remove(pkg_name)
|
|
return c
|
|
|
|
|
|
def check_installability(inst_tester, binaries, arch, updates, affected, check_archall, nuninst):
|
|
broken = nuninst[arch + "+all"]
|
|
packages_t_a = binaries[arch][0]
|
|
improvement = 0
|
|
|
|
# broken packages (first round)
|
|
for pkg_id in (x for x in updates if x[2] == arch):
|
|
name, version, parch = pkg_id
|
|
if name not in packages_t_a:
|
|
continue
|
|
pkgdata = packages_t_a[name]
|
|
if version != pkgdata.version:
|
|
# Not the version in testing right now, ignore
|
|
continue
|
|
actual_arch = pkgdata.architecture
|
|
nuninst_arch = None
|
|
# only check arch:all packages if requested
|
|
if check_archall or actual_arch != 'all':
|
|
nuninst_arch = nuninst[parch]
|
|
elif actual_arch == 'all':
|
|
nuninst[parch].discard(name)
|
|
result = test_installability(inst_tester, name, pkg_id, broken, nuninst_arch)
|
|
if improvement > 0 or not result:
|
|
# Any improvement could in theory fix all of its rdeps, so
|
|
# stop updating "improvement" after that.
|
|
continue
|
|
if result > 0:
|
|
# Any improvement (even in arch:all packages) could fix any
|
|
# number of rdeps
|
|
improvement = 1
|
|
continue
|
|
if check_archall or actual_arch != 'all':
|
|
# We cannot count arch:all breakage (except on no-break-arch-all arches)
|
|
# because the nuninst check do not consider them regressions.
|
|
improvement += result
|
|
|
|
if improvement < 0:
|
|
# The early round is sufficient to disprove the situation
|
|
return
|
|
|
|
for pkg_id in (x for x in affected if x[2] == arch):
|
|
name, version, parch = pkg_id
|
|
if name not in packages_t_a:
|
|
continue
|
|
pkgdata = packages_t_a[name]
|
|
if version != pkgdata.version:
|
|
# Not the version in testing right now, ignore
|
|
continue
|
|
actual_arch = pkgdata.architecture
|
|
nuninst_arch = None
|
|
# only check arch:all packages if requested
|
|
if check_archall or actual_arch != 'all':
|
|
nuninst_arch = nuninst[parch]
|
|
elif actual_arch == 'all':
|
|
nuninst[parch].discard(name)
|
|
test_installability(inst_tester, name, pkg_id, broken, nuninst_arch)
|
|
|
|
|
|
def possibly_compressed(path, permitted_compressesion=None):
|
|
"""Find and select a (possibly compressed) variant of a path
|
|
|
|
If the given path exists, it will be returned
|
|
|
|
:param path The base path.
|
|
:param permitted_compressesion An optional list of alternative extensions to look for.
|
|
Defaults to "gz" and "xz".
|
|
:returns The path given possibly with one of the permitted extensions. Will raise a
|
|
FileNotFoundError
|
|
"""
|
|
if os.path.exists(path):
|
|
return path
|
|
if permitted_compressesion is None:
|
|
permitted_compressesion = ['gz', 'xz']
|
|
for ext in permitted_compressesion:
|
|
cpath = "%s.%s" % (path, ext)
|
|
if os.path.exists(cpath):
|
|
return cpath
|
|
raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), path)
|