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repo.py
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# repo.py # DNF Repository objects. # # Copyright (C) 2013-2016 Red Hat, Inc. # # This copyrighted material is made available to anyone wishing to use, # modify, copy, or redistribute it subject to the terms and conditions of # the GNU General Public License v.2, or (at your option) any later version. # This program is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY expressed or implied, including the implied warranties of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. You should have received a copy of the # GNU General Public License along with this program; if not, write to the # Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. Any Red Hat trademarks that are incorporated in the # source code or documentation are not subject to the GNU General Public # License and may only be used or replicated with the express permission of # Red Hat, Inc. # from __future__ import absolute_import from __future__ import unicode_literals from dnf.i18n import ucd, _ import dnf.callback import dnf.conf import dnf.conf.substitutions import dnf.const import dnf.crypto import dnf.exceptions import dnf.logging import dnf.pycomp import dnf.util import dnf.yum.misc import libdnf.error import libdnf.repo import functools import hashlib import hawkey import logging import operator import os import re import shutil import string import sys import time import traceback _PACKAGES_RELATIVE_DIR = "packages" _MIRRORLIST_FILENAME = "mirrorlist" # Chars allowed in a repo ID _REPOID_CHARS = string.ascii_letters + string.digits + '-_.:' # Regex pattern that matches a repo cachedir and captures the repo ID _CACHEDIR_RE = r'(?P<repoid>[%s]+)\-[%s]{16}' % (re.escape(_REPOID_CHARS), string.hexdigits) # Regex patterns matching any filename that is repo-specific cache data of a # particular type. The filename is expected to not contain the base cachedir # path components. CACHE_FILES = { 'metadata': r'^%s\/.*((xml|yaml)(\.gz|\.xz|\.bz2|.zck)?|asc|cachecookie|%s)$' % (_CACHEDIR_RE, _MIRRORLIST_FILENAME), 'packages': r'^%s\/%s\/.+rpm$' % (_CACHEDIR_RE, _PACKAGES_RELATIVE_DIR), 'dbcache': r'^.+(solv|solvx)$', } logger = logging.getLogger("dnf") def repo_id_invalid(repo_id): # :api """Return index of an invalid character in the repo ID (if present).""" first_invalid = libdnf.repo.Repo.verifyId(repo_id) return None if first_invalid < 0 else first_invalid def _pkg2payload(pkg, progress, *factories): for fn in factories: pload = fn(pkg, progress) if pload is not None: return pload raise ValueError(_('no matching payload factory for %s') % pkg) def _download_payloads(payloads, drpm, fail_fast=True): # download packages def _download_sort_key(payload): return not hasattr(payload, 'delta') drpm.err.clear() targets = [pload._librepo_target() for pload in sorted(payloads, key=_download_sort_key)] errs = _DownloadErrors() try: libdnf.repo.PackageTarget.downloadPackages(libdnf.repo.VectorPPackageTarget(targets), fail_fast) except RuntimeError as e: errs._fatal = str(e) drpm.wait() # process downloading errors errs._recoverable = drpm.err.copy() for tgt in targets: err = tgt.getErr() if err is None or err.startswith('Not finished'): continue callbacks = tgt.getCallbacks() payload = callbacks.package_pload pkg = payload.pkg if err == 'Already downloaded': errs._skipped.add(pkg) continue pkg.repo._repo.expire() errs._pkg_irrecoverable[pkg] = [err] return errs def _update_saving(saving, payloads, errs): real, full = saving for pload in payloads: pkg = pload.pkg if pkg in errs: real += pload.download_size continue real += pload.download_size full += pload._full_size return real, full class _DownloadErrors(object): def __init__(self): self._pkg_irrecoverable = {} self._val_recoverable = {} self._fatal = None self._skipped = set() def _irrecoverable(self): if self._pkg_irrecoverable: return self._pkg_irrecoverable if self._fatal: return {'': [self._fatal]} return {} @property def _recoverable(self): return self._val_recoverable @_recoverable.setter def _recoverable(self, new_dct): self._val_recoverable = new_dct def _bandwidth_used(self, pload): if pload.pkg in self._skipped: return 0 return pload.download_size class _DetailedLibrepoError(Exception): def __init__(self, librepo_err, source_url): Exception.__init__(self) self.librepo_code = librepo_err.args[0] self.librepo_msg = librepo_err.args[1] self.source_url = source_url class _NullKeyImport(dnf.callback.KeyImport): def _confirm(self, id, userid, fingerprint, url, timestamp): return True class Metadata(object): def __init__(self, repo): self._repo = repo @property def fresh(self): # :api return self._repo.fresh() class PackageTargetCallbacks(libdnf.repo.PackageTargetCB): def __init__(self, package_pload): super(PackageTargetCallbacks, self).__init__() self.package_pload = package_pload def end(self, status, msg): self.package_pload._end_cb(None, status, msg) return 0 def progress(self, totalToDownload, downloaded): self.package_pload._progress_cb(None, totalToDownload, downloaded) return 0 def mirrorFailure(self, msg, url): self.package_pload._mirrorfail_cb(None, msg, url) return 0 class PackagePayload(dnf.callback.Payload): def __init__(self, pkg, progress): super(PackagePayload, self).__init__(progress) self.callbacks = PackageTargetCallbacks(self) self.pkg = pkg def _end_cb(self, cbdata, lr_status, msg): """End callback to librepo operation.""" status = dnf.callback.STATUS_FAILED if msg is None: status = dnf.callback.STATUS_OK elif msg.startswith('Not finished'): return elif lr_status == libdnf.repo.PackageTargetCB.TransferStatus_ALREADYEXISTS: status = dnf.callback.STATUS_ALREADY_EXISTS self.progress.end(self, status, msg) def _mirrorfail_cb(self, cbdata, err, url): self.progress.end(self, dnf.callback.STATUS_MIRROR, err) def _progress_cb(self, cbdata, total, done): try: self.progress.progress(self, done) except Exception: exc_type, exc_value, exc_traceback = sys.exc_info() except_list = traceback.format_exception(exc_type, exc_value, exc_traceback) logger.critical(''.join(except_list)) @property def _full_size(self): return self.download_size def _librepo_target(self): pkg = self.pkg pkgdir = pkg.pkgdir dnf.util.ensure_dir(pkgdir) target_dct = { 'dest': pkgdir, 'resume': True, 'cbdata': self, 'progresscb': self._progress_cb, 'endcb': self._end_cb, 'mirrorfailurecb': self._mirrorfail_cb, } target_dct.update(self._target_params()) return libdnf.repo.PackageTarget( pkg.repo._repo, target_dct['relative_url'], target_dct['dest'], target_dct['checksum_type'], target_dct['checksum'], target_dct['expectedsize'], target_dct['base_url'], target_dct['resume'], 0, 0, self.callbacks) class RPMPayload(PackagePayload): def __str__(self): return os.path.basename(self.pkg.location) def _target_params(self): pkg = self.pkg ctype, csum = pkg.returnIdSum() ctype_code = libdnf.repo.PackageTarget.checksumType(ctype) if ctype_code == libdnf.repo.PackageTarget.ChecksumType_UNKNOWN: logger.warning(_("unsupported checksum type: %s"), ctype) return { 'relative_url': pkg.location, 'checksum_type': ctype_code, 'checksum': csum, 'expectedsize': pkg.downloadsize, 'base_url': pkg.baseurl, } @property def download_size(self): """Total size of the download.""" return self.pkg.downloadsize class RemoteRPMPayload(PackagePayload): def __init__(self, remote_location, conf, progress): super(RemoteRPMPayload, self).__init__("unused_object", progress) self.remote_location = remote_location self.remote_size = 0 self.conf = conf s = (self.conf.releasever or "") + self.conf.substitutions.get('basearch') digest = hashlib.sha256(s.encode('utf8')).hexdigest()[:16] repodir = "commandline-" + digest self.pkgdir = os.path.join(self.conf.cachedir, repodir, "packages") dnf.util.ensure_dir(self.pkgdir) self.local_path = os.path.join(self.pkgdir, self.__str__().lstrip("/")) def __str__(self): return os.path.basename(self.remote_location) def _progress_cb(self, cbdata, total, done): self.remote_size = total try: self.progress.progress(self, done) except Exception: exc_type, exc_value, exc_traceback = sys.exc_info() except_list = traceback.format_exception(exc_type, exc_value, exc_traceback) logger.critical(''.join(except_list)) def _librepo_target(self): return libdnf.repo.PackageTarget( self.conf._config, os.path.basename(self.remote_location), self.pkgdir, 0, None, 0, os.path.dirname(self.remote_location), True, 0, 0, self.callbacks) @property def download_size(self): """Total size of the download.""" return self.remote_size class MDPayload(dnf.callback.Payload): def __init__(self, progress): super(MDPayload, self).__init__(progress) self._text = "" self._download_size = 0 self.fastest_mirror_running = False self.mirror_failures = set() def __str__(self): if dnf.pycomp.PY3: return self._text else: return self._text.encode('utf-8') def __unicode__(self): return self._text def _progress_cb(self, cbdata, total, done): self._download_size = total self.progress.progress(self, done) def _fastestmirror_cb(self, cbdata, stage, data): if stage == libdnf.repo.RepoCB.FastestMirrorStage_DETECTION: # pinging mirrors, this might take a while msg = _('determining the fastest mirror (%s hosts).. ') % data self.fastest_mirror_running = True elif stage == libdnf.repo.RepoCB.FastestMirrorStage_STATUS and self.fastest_mirror_running: # done.. report but ignore any errors msg = 'error: %s\n' % data if data else 'done.\n' else: return self.progress.message(msg) def _mirror_failure_cb(self, cbdata, msg, url, metadata): self.mirror_failures.add(msg) msg = 'error: %s (%s).' % (msg, url) logger.debug(msg) @property def download_size(self): return self._download_size @property def progress(self): return self._progress @progress.setter def progress(self, progress): if progress is None: progress = dnf.callback.NullDownloadProgress() self._progress = progress def start(self, text): self._text = text self.progress.start(1, 0) def end(self): self._download_size = 0 self.progress.end(self, None, None) # use the local cache even if it's expired. download if there's no cache. SYNC_LAZY = libdnf.repo.Repo.SyncStrategy_LAZY # use the local cache, even if it's expired, never download. SYNC_ONLY_CACHE = libdnf.repo.Repo.SyncStrategy_ONLY_CACHE # try the cache, if it is expired download new md. SYNC_TRY_CACHE = libdnf.repo.Repo.SyncStrategy_TRY_CACHE class RepoCallbacks(libdnf.repo.RepoCB): def __init__(self, repo): super(RepoCallbacks, self).__init__() self._repo = repo self._md_pload = repo._md_pload def start(self, what): self._md_pload.start(what) def end(self): self._md_pload.end() def progress(self, totalToDownload, downloaded): self._md_pload._progress_cb(None, totalToDownload, downloaded) return 0 def fastestMirror(self, stage, ptr): self._md_pload._fastestmirror_cb(None, stage, ptr) def handleMirrorFailure(self, msg, url, metadata): self._md_pload._mirror_failure_cb(None, msg, url, metadata) return 0 def repokeyImport(self, id, userid, fingerprint, url, timestamp): return self._repo._key_import._confirm(id, userid, fingerprint, url, timestamp) class Repo(dnf.conf.RepoConf): # :api DEFAULT_SYNC = SYNC_TRY_CACHE def __init__(self, name=None, parent_conf=None): # :api super(Repo, self).__init__(section=name, parent=parent_conf) self._config.this.disown() # _repo will be the owner of _config self._repo = libdnf.repo.Repo(name if name else "", self._config) self._md_pload = MDPayload(dnf.callback.NullDownloadProgress()) self._callbacks = RepoCallbacks(self) self._callbacks.this.disown() # _repo will be the owner of callbacks self._repo.setCallbacks(self._callbacks) self._pkgdir = None self._key_import = _NullKeyImport() self.metadata = None # :api self._repo.setSyncStrategy(SYNC_ONLY_CACHE if parent_conf and parent_conf.cacheonly else self.DEFAULT_SYNC) if parent_conf: self._repo.setSubstitutions(parent_conf.substitutions) self._substitutions = dnf.conf.substitutions.Substitutions() self._check_config_file_age = parent_conf.check_config_file_age \ if parent_conf is not None else True @property def id(self): # :api return self._repo.getId() @property def repofile(self): # :api return self._repo.getRepoFilePath() @repofile.setter def repofile(self, value): self._repo.setRepoFilePath(value) @property def pkgdir(self): # :api if self._repo.isLocal(): return self._repo.getLocalBaseurl() return self.cache_pkgdir() def cache_pkgdir(self): if self._pkgdir is not None: return self._pkgdir return os.path.join(self._repo.getCachedir(), _PACKAGES_RELATIVE_DIR) @pkgdir.setter def pkgdir(self, val): # :api self._pkgdir = val @property def _pubring_dir(self): return os.path.join(self._repo.getCachedir(), 'pubring') @property def load_metadata_other(self): return self._repo.getLoadMetadataOther() @load_metadata_other.setter def load_metadata_other(self, val): self._repo.setLoadMetadataOther(val) def __lt__(self, other): return self.id < other.id def __repr__(self): return "<%s %s>" % (self.__class__.__name__, self.id) def __setattr__(self, name, value): super(Repo, self).__setattr__(name, value) def disable(self): # :api self._repo.disable() def enable(self): # :api self._repo.enable() def add_metadata_type_to_download(self, metadata_type): # :api """Ask for additional repository metadata type to download. Given metadata_type is appended to the default metadata set when repository is downloaded. Parameters ---------- metadata_type: string Example: add_metadata_type_to_download("productid") """ self._repo.addMetadataTypeToDownload(metadata_type) def remove_metadata_type_from_download(self, metadata_type): # :api """Stop asking for this additional repository metadata type in download. Given metadata_type is no longer downloaded by default when this repository is downloaded. Parameters ---------- metadata_type: string Example: remove_metadata_type_from_download("productid") """ self._repo.removeMetadataTypeFromDownload(metadata_type) def get_metadata_path(self, metadata_type): # :api """Return path to the file with downloaded repository metadata of given type. Parameters ---------- metadata_type: string """ return self._repo.getMetadataPath(metadata_type) def get_metadata_content(self, metadata_type): # :api """Return content of the file with downloaded repository metadata of given type. Content of compressed metadata file is returned uncompressed. Parameters ---------- metadata_type: string """ return self._repo.getMetadataContent(metadata_type) def load(self): # :api """Load the metadata for this repo. Depending on the configuration and the age and consistence of data available on the disk cache, either loads the metadata from the cache or downloads them from the mirror, baseurl or metalink. This method will by default not try to refresh already loaded data if called repeatedly. Returns True if this call to load() caused a fresh metadata download. """ ret = False try: ret = self._repo.load() except (libdnf.error.Error, RuntimeError) as e: if self._md_pload.mirror_failures: msg = "Errors during downloading metadata for repository '%s':" % self.id for failure in self._md_pload.mirror_failures: msg += "\n - %s" % failure logger.warning(msg) raise dnf.exceptions.RepoError(str(e)) finally: self._md_pload.mirror_failures = set() self.metadata = Metadata(self._repo) return ret def _metadata_expire_in(self): """Get the number of seconds after which the cached metadata will expire. Returns a tuple, boolean whether there even is cached metadata and the number of seconds it will expire in. Negative number means the metadata has expired already, None that it never expires. """ if not self.metadata: self._repo.loadCache(False) if self.metadata: if self.metadata_expire == -1: return True, None expiration = self._repo.getExpiresIn() if self._repo.isExpired(): expiration = min(0, expiration) return True, expiration return False, 0 def _set_key_import(self, key_import): self._key_import = key_import def set_progress_bar(self, progress): # :api self._md_pload.progress = progress def get_http_headers(self): # :api """Returns user defined http headers. Returns ------- headers : tuple of strings """ return self._repo.getHttpHeaders() def set_http_headers(self, headers): # :api """Sets http headers. Sets new http headers and rewrites existing ones. Parameters ---------- headers : tuple or list of strings Example: set_http_headers(["User-Agent: Agent007", "MyFieldName: MyFieldValue"]) """ self._repo.setHttpHeaders(headers) def remote_location(self, location, schemes=('http', 'ftp', 'file', 'https')): """ :param location: relative location inside the repo :param schemes: list of allowed protocols. Default is ('http', 'ftp', 'file', 'https') :return: absolute url (string) or None """ def schemes_filter(url_list): for url in url_list: if schemes: s = dnf.pycomp.urlparse.urlparse(url)[0] if s in schemes: return os.path.join(url, location.lstrip('/')) else: return os.path.join(url, location.lstrip('/')) return None if not location: return None mirrors = self._repo.getMirrors() if mirrors: return schemes_filter(mirrors) elif self.baseurl: return schemes_filter(self.baseurl)