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packages.py
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# # Copyright (c) 2015--2017 Red Hat, Inc. # # This software is licensed to you under the GNU General Public License, # version 2 (GPLv2). There is NO WARRANTY for this software, express or # implied, including the implied warranties of MERCHANTABILITY or FITNESS # FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2 # along with this software; if not, see # http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. # # Red Hat trademarks are not licensed under GPLv2. No permission is # granted to use or replicate Red Hat trademarks that are incorporated # in this software or its documentation. # import os import time import dnf.exceptions import dnf.cli from up2date_client import up2dateLog from up2date_client import config from up2date_client import rpmUtils from up2date_client import rhnPackageInfo log = up2dateLog.initLog() # file used to keep track of the next time rhn_check # is allowed to update the package list on the server LAST_UPDATE_FILE = "/var/lib/up2date/dbtimestamp" # mark this module as acceptable __rhnexport__ = [ 'update', 'remove', 'refresh_list', 'fullUpdate', 'checkNeedUpdate', 'runTransaction', 'verify' ] def remove(package_list, cache_only=None): """We have been told that we should remove packages""" if cache_only: return (0, "no-ops for caching", {}) if not isinstance(package_list, list): return (13, "Invalid arguments passed to function", {}) log.log_debug("Called remove_packages", package_list) # initialize dnf base = _dnf_base(load_system_repo=True, load_available_repos=False) installed = base.sack.query().installed() to_remove = [_package_tup2obj(installed, tup) for tup in package_list] return _dnf_transaction(base, remove=to_remove, allow_erasing=True, cache_only=cache_only) def update(package_list, cache_only=None): """We have been told that we should retrieve/install packages""" if not isinstance(package_list, list): return (13, "Invalid arguments passed to function", {}) log.log_debug("Called update", package_list) # initialize dnf base = _dnf_base(load_system_repo=True, load_available_repos=True) installed = base.sack.query().installed() available = base.sack.query().available() # skip already installed packages err = None errmsgs = [] to_install = [] for package in package_list: if len(package) < 5: package.append('') (name, version, release, epoch, arch) = package if version == '' and release == '' \ and epoch == '' and arch == '' \ and installed.filter(name=name): log.log_debug('Package %s is already installed' % name) continue if epoch == '': epoch = 0 pkgs = installed.filter(name=name, arch=arch).latest() requested_pkg = _package_tup2obj(available, package) if not requested_pkg: err = 'Package %s is not available for installation' \ % _package_tup2str(package) log.log_me('E: ', err) errmsgs.append(err) continue for pkg in pkgs: pkg_cmp = pkg.evr_cmp(requested_pkg) if pkg_cmp == 0: log.log_debug('Package %s already installed' % _package_tup2str(package)) break elif pkg_cmp > 0: log.log_debug('More recent version of package %s is already installed' % _package_tup2str(package)) break else: to_install.append(requested_pkg) # Don't proceed further with empty list, # since this would result into an empty yum transaction if not to_install: if err: ret = (32, "Failed: Packages failed to install properly:\n" + '\n'.join(errmsgs), {'version': '1', 'name': "package_install_failure"}) else: ret = (0, "Requested packages already installed", {}) # workaround for RhBug:1218071 base._plugins._unload() base.close() return ret return _dnf_transaction(base, install=to_install, cache_only=cache_only) def runTransaction(transaction_data, cache_only=None): """ Run a transaction on a group of packages. This was historicaly meant as generic call, but is only called for rollback. """ if cache_only: return (0, "no-ops for caching", {}) # initialize dnf base = _dnf_base(load_system_repo=True, load_available_repos=True) installed = base.sack.query().installed() available = base.sack.query().available() to_install = [] to_remove = [] for package_object in transaction_data['packages'][:]: [package, action] = package_object pkg = _package_tup2obj(installed, package) if action == 'e' and pkg: to_remove.append(pkg) elif action == 'i' and not pkg: new = _package_tup2obj(available, package) to_install.append(new) # Don't proceed further with empty package lists if not to_install and not to_remove: return (0, "Requested package actions have already been performed.", {}) return _dnf_transaction(base, install=to_install, remove=to_remove, allow_erasing=True, cache_only=cache_only) def fullUpdate(force=0, cache_only=None): """ Update all packages on the system. """ base = _dnf_base(load_system_repo=True, load_available_repos=True) return _dnf_transaction(base, full_update=True, cache_only=cache_only) # The following functions are the same as the old up2date ones. def checkNeedUpdate(rhnsd=None, cache_only=None): """ Check if the locally installed package list changed, if needed the list is updated on the server In case of error avoid pushing data to stay safe """ if cache_only: return (0, "no-ops for caching", {}) data = {} dbpath = "/var/lib/rpm" cfg = config.initUp2dateConfig() if cfg['dbpath']: dbpath = cfg['dbpath'] RPM_PACKAGE_FILE = "%s/Packages" % dbpath try: dbtime = os.stat(RPM_PACKAGE_FILE)[8] # 8 is st_mtime except: return (0, "unable to stat the rpm database", data) try: last = os.stat(LAST_UPDATE_FILE)[8] except: last = 0 # Never update the package list more than once every 1/2 hour if last >= (dbtime - 10): return (0, "rpm database not modified since last update (or package " "list recently updated)", data) if last == 0: try: file = open(LAST_UPDATE_FILE, "w+") file.close() except: return (0, "unable to open the timestamp file", data) # call the refresh_list action with a argument so we know it's # from rhnsd return refresh_list(rhnsd=1) def refresh_list(rhnsd=None, cache_only=None): """ push again the list of rpm packages to the server """ if cache_only: return (0, "no-ops for caching", {}) log.log_debug("Called refresh_rpmlist") ret = None try: rhnPackageInfo.updatePackageProfile() except: print("ERROR: refreshing remote package list for System Profile") return (20, "Error refreshing package list", {}) touch_time_stamp() return (0, "rpmlist refreshed", {}) def touch_time_stamp(): try: file_d = open(LAST_UPDATE_FILE, "w+") file_d.close() except: return (0, "unable to open the timestamp file", {}) # Never update the package list more than once every hour. t = time.time() try: os.utime(LAST_UPDATE_FILE, (t, t)) except: return (0, "unable to set the time stamp on the time stamp file %s" % LAST_UPDATE_FILE, {}) def verify(packages, cache_only=None): log.log_debug("Called packages.verify") if cache_only: return (0, "no-ops for caching", {}) data = {} data['name'] = "packages.verify" data['version'] = 0 ret, missing_packages = rpmUtils.verifyPackages(packages) data['verify_info'] = ret if len(missing_packages): data['name'] = "packages.verify.missing_packages" data['version'] = 0 data['missing_packages'] = missing_packages return(43, "packages requested to be verified are missing", data) return (0, "packages verified", data) def _dnf_base(load_system_repo=True, load_available_repos=True): # initialize dnf base = dnf.Base() if not base._plugins.plugins: base.init_plugins() if load_available_repos: base.read_all_repos() base.fill_sack(load_system_repo=True, load_available_repos=True) return base def _dnf_transaction(base, install=[], remove=[], full_update=False, allow_erasing=False, cache_only=None): """ command is an function excpecting dnf.Base() as an argument """ try: if full_update: base.upgrade_all() else: for pkg in install: if pkg: base.package_install(pkg) for pkg in remove: if pkg: base.package_remove(pkg) base.resolve(allow_erasing) log.log_debug("Dependencies Resolved") if not len(base.transaction): raise dnf.exceptions.Error('empty transaction') if base.transaction.install_set: log.log_debug("Downloading and installing: ", [str(p) for p in base.transaction.install_set]) base.download_packages(base.transaction.install_set) if base.transaction.remove_set: log.log_debug("Removing: ", [str(p) for p in base.transaction.remove_set]) if not cache_only: base.do_transaction() except dnf.exceptions.MarkingError as e: data = {} data['version'] = "1" data['name'] = "package_install_failure" return (32, "Failed: Packages failed to install " "properly: %s" % str(e), data) except dnf.exceptions.MarkingError as e: data = {} data['version'] = 0 data['name'] = "rpmremoveerrors" return (15, "%s" % str(e), data) except dnf.exceptions.DepsolveError as e: data = {} data["version"] = "1" data["name"] = "failed_deps" return (18, "Failed: packages requested raised " "dependency problems: %s" % str(e), data) except dnf.exceptions.Error as e: status = 6, message = "Error while executing packages action: %s" % str(e) data = {} return (status, message, data) finally: # workaround for RhBug:1218071 base._plugins._unload() base.close() return (0, "Update Succeeded", {}) def _package_tup2obj(q, tup): (name, version, release, epoch) = tup[:4] arch = tup[4] if len(tup) > 4 else None query = {'name': name} if version is not None and len(version) > 0: query['version'] = version if release is not None and len(release) > 0: query['release'] = release if epoch is not None and len(epoch) > 0: query['epoch'] = int(epoch) if arch is not None and len(arch) > 0: query['arch'] = arch pkgs = q.filter(**query).run() if pkgs: return pkgs[0] return None def _package_tup2str(package_tup): """ Create a package name from an rhn package tuple. """ n, v, r, e, a = package_tup[:] if not e: e = '0' pkginfo = '%s-%s:%s-%s' % (n, e, v, r) if a: pkginfo += '.%s' % (a) return (pkginfo,)