Python Cache.commit方法代码示例

# 需要导入模块: from apt.cache import Cache [as 别名]
# 或者: from apt.cache.Cache import commit [as 别名]
def do_update(mark_only):
    _, progress = query_verbosity()

    log.info("Getting list of eligible packages...")
    cache = Cache(progress)
    f_cache = FilteredCache(cache)
    f_cache.set_filter(NvidiaFilter())
    names = f_cache.keys()

    with unhold(names, cache):
        # mark_only means we just want the side-effects of exiting the
        # unhold() context manager.
        if mark_only:
            return False

        log.info("Updating package list...")
        try:
            cache.update()
        except FetchFailedException, err:
            log.warn(err)
        cache.open(progress)  # Refresh package list

        old_versions = {name: cache[name].installed for name in names}
        log.info("Updating all packages...")
        for name in names:
            if cache[name].is_upgradable:
                cache[name].mark_upgrade()
        cache.commit(None, None)

        log.info("Refreshing package cache...")
        cache.open(progress)
        new_versions = {name: cache[name].installed for name in names}

        log.info("Checking whether packages were upgraded...")
        for name in old_versions:
            if old_versions[name] != new_versions[name]:
                log.info("Kernel module changed")
                return True
        return False

# 需要导入模块: from apt.cache import Cache [as 别名]
# 或者: from apt.cache.Cache import commit [as 别名]
#        self.apt_status = os.WEXITSTATUS(status)
#        self.finished = True
#
#    def error(self, pkg, errormsg):
#        """Called when an error happens.
#
#        Emits: status_error()
#        """
#        self.emit(QtCore.SIGNAL("status_error()"))

#    def conffile(self, current, new):
#        """Called during conffile.
#
#            Emits: status-conffile()
#        """
#        self.emit("status-conffile")
#
#    def start_update(self):
#        """Called when the update starts.
#
#        Emits: status-started()
#        """
#        self.emit("status-started")

if __name__ =='__main__':
    from apt.cache import Cache
    import apt
    c = Cache(QOpProgress())
    c.update(QAcquireProgress())
    c.commit(QAcquireProgress(), QInstallProgress())

# 需要导入模块: from apt.cache import Cache [as 别名]
# 或者: from apt.cache.Cache import commit [as 别名]
class GDebiCli(object):

    def __init__(self, options):
        # fixme, do graphic cache check
        self.options = options
        if options.quiet:
            tp = apt.progress.base.OpProgress()
        else:
            tp = apt.progress.text.OpProgress()
        # set architecture to architecture in root-dir
        if options.rootdir and os.path.exists(options.rootdir+"/usr/bin/dpkg"):
            arch = Popen([options.rootdir+"/usr/bin/dpkg",
                          "--print-architecture"],
                         stdout=PIPE,
                         universal_newlines=True).communicate()[0]
            if arch:
                apt_pkg.config.set("APT::Architecture",arch.strip())
        if options.apt_opts:
            for o in options.apt_opts:
                if o.find('=') < 0:
                    sys.stderr.write(_("Configuration items must be specified with a =<value>\n"))
                    sys.exit(1)
                (name, value) = o.split('=', 1)
                try:
                    apt_pkg.config.set(name, value)
                except:
                    sys.stderr.write(_("Couldn't set APT option %s to %s\n") % (name, value))
                    sys.exit(1)
        self._cache = Cache(tp, rootdir=options.rootdir)

    def open(self, file):
        try:
            if (file.endswith(".deb") or
                "Debian binary package" in Popen(["file", file], stdout=PIPE, universal_newlines=True).communicate()[0]):
                self._deb = DebPackage(file, self._cache)
            elif (file.endswith(".dsc") or
                  os.path.basename(file) == "control"):
                self._deb = DscSrcPackage(file, self._cache)
            else:
                sys.stderr.write(_("Unknown package type '%s', exiting\n") % file)
                sys.exit(1)
        except (IOError,SystemError,ValueError) as e:
            logging.debug("error opening: %s" % e)
            sys.stderr.write(_("Failed to open the software package\n"))
            sys.stderr.write(_("The package might be corrupted or you are not "
                           "allowed to open the file. Check the permissions "
                           "of the file.\n"))
            sys.exit(1)
        # check the deps
        if not self._deb.check():
            sys.stderr.write(_("This package is uninstallable\n"))
            sys.stderr.write(self._deb._failure_string + "\n")
            return False
        return True

    def show_description(self):
        try:
            print(self._deb["Description"])
        except KeyError:
            print(_("No description is available"))

    def show_dependencies(self):
        print(self.get_dependencies_info())

    def get_dependencies_info(self):
        s = ""
        # show what changes
        (install, remove, unauthenticated) = self._deb.required_changes
        if len(unauthenticated) > 0:
            s += _("The following packages are UNAUTHENTICATED: ")
            for pkgname in unauthenticated:
                s += pkgname + " "
        if len(remove) > 0:
            s += _("Requires the REMOVAL of the following packages: ")
            for pkgname in remove:
                s += pkgname + " "
            s += "\n"
        if len(install) > 0:
            s += _("Requires the installation of the following packages: ")
            for pkgname in install:
                s += pkgname + " "
            s += "\n"
        return s

    def install(self):
        # install the dependecnies
        (install,remove,unauthenticated) = self._deb.required_changes
        if len(install) > 0 or len(remove) > 0:
            fprogress = apt.progress.text.AcquireProgress()
            iprogress = apt.progress.base.InstallProgress()
            try:
                self._cache.commit(fprogress,iprogress)
            except(apt.cache.FetchFailedException, SystemError) as e:
                sys.stderr.write(_("Error during install: '%s'") % e)
                return 1

        # install the package itself
        if self._deb.filename.endswith(".dsc"):
            # FIXME: add option to only install build-dependencies
            #        (or build+install the deb) and then enable
#.........这里部分代码省略.........

# 需要导入模块: from apt.cache import Cache [as 别名]
# 或者: from apt.cache.Cache import commit [as 别名]
    def do_install(self, to_install, langpacks=False):
        self.nested_progress_start()

        if langpacks:
            self.db.progress('START', 0, 10, 'ubiquity/langpacks/title')
        else:
            self.db.progress('START', 0, 10, 'ubiquity/install/title')
        self.db.progress('INFO', 'ubiquity/install/find_installables')

        self.progress_region(0, 1)
        fetchprogress = DebconfAcquireProgress(
            self.db, 'ubiquity/install/title',
            'ubiquity/install/apt_indices_starting',
            'ubiquity/install/apt_indices')
        cache = Cache()

        if cache._depcache.broken_count > 0:
            syslog.syslog(
                'not installing additional packages, since there are broken '
                'packages: %s' % ', '.join(broken_packages(cache)))
            self.db.progress('STOP')
            self.nested_progress_end()
            return

        for pkg in to_install:
            mark_install(cache, pkg)

        self.db.progress('SET', 1)
        self.progress_region(1, 10)
        if langpacks:
            fetchprogress = DebconfAcquireProgress(
                self.db, 'ubiquity/langpacks/title', None,
                'ubiquity/langpacks/packages')
            installprogress = DebconfInstallProgress(
                self.db, 'ubiquity/langpacks/title',
                'ubiquity/install/apt_info')
        else:
            fetchprogress = DebconfAcquireProgress(
                self.db, 'ubiquity/install/title', None,
                'ubiquity/install/fetch_remove')
            installprogress = DebconfInstallProgress(
                self.db, 'ubiquity/install/title',
                'ubiquity/install/apt_info',
                'ubiquity/install/apt_error_install')
        chroot_setup(self.target)
        commit_error = None
        try:
            try:
                if not cache.commit(fetchprogress, installprogress):
                    fetchprogress.stop()
                    installprogress.finishUpdate()
                    self.db.progress('STOP')
                    self.nested_progress_end()
                    return
            except IOError:
                for line in traceback.format_exc().split('\n'):
                    syslog.syslog(syslog.LOG_ERR, line)
                fetchprogress.stop()
                installprogress.finishUpdate()
                self.db.progress('STOP')
                self.nested_progress_end()
                return
            except SystemError, e:
                for line in traceback.format_exc().split('\n'):
                    syslog.syslog(syslog.LOG_ERR, line)
                commit_error = str(e)
        finally:
            chroot_cleanup(self.target)
        self.db.progress('SET', 10)

        cache.open(None)
        if commit_error or cache._depcache.broken_count > 0:
            if commit_error is None:
                commit_error = ''
            brokenpkgs = broken_packages(cache)
            self.warn_broken_packages(brokenpkgs, commit_error)

        self.db.progress('STOP')

        self.nested_progress_end()