d50321239c
A bad system repo can cause lorax-composer to fail to start. Instead of
a traceback log the error and exit.
(note that the exit still results in an OSError traceback due to part of
it running as root, this needs to be addressed in another commit).
(cherry picked from commit 49380b4b49)
93 lines
3.1 KiB
Python
93 lines
3.1 KiB
Python
#
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# Copyright (C) 2017-2018 Red Hat, Inc.
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#
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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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#
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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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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# pylint: disable=bad-preconf-access
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import logging
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log = logging.getLogger("lorax-composer")
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import dnf
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import dnf.logging
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from glob import glob
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import os
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import shutil
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def get_base_object(conf):
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"""Get the DNF object with settings from the config file
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:param conf: configuration object
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:type conf: ComposerParser
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:returns: A DNF Base object
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:rtype: dnf.Base
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"""
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cachedir = os.path.abspath(conf.get("composer", "cache_dir"))
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dnfconf = os.path.abspath(conf.get("composer", "dnf_conf"))
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dnfroot = os.path.abspath(conf.get("composer", "dnf_root"))
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repodir = os.path.abspath(conf.get("composer", "repo_dir"))
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# Setup the config for the DNF Base object
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dbo = dnf.Base()
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dbc = dbo.conf
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# TODO - Handle this
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# dbc.logdir = logdir
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dbc.installroot = dnfroot
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if not os.path.isdir(dnfroot):
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os.makedirs(dnfroot)
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if not os.path.isdir(repodir):
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os.makedirs(repodir)
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dbc.cachedir = cachedir
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dbc.reposdir = [repodir]
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dbc.install_weak_deps = False
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dbc.prepend_installroot('persistdir')
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dbc.tsflags.append('nodocs')
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if conf.get_default("dnf", "proxy", None):
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dbc.proxy = conf.get("dnf", "proxy")
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if conf.has_option("dnf", "sslverify") and not conf.getboolean("dnf", "sslverify"):
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dbc.sslverify = False
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_releasever = conf.get_default("composer", "releasever", None)
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if not _releasever:
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# Use the releasever of the host system
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_releasever = dnf.rpm.detect_releasever("/")
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log.info("releasever = %s", _releasever)
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dbc.releasever = _releasever
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# write the dnf configuration file
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with open(dnfconf, "w") as f:
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f.write(dbc.dump())
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# dnf needs the repos all in one directory, composer uses repodir for this
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# if system repos are supposed to be used, copy them into repodir, overwriting any previous copies
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if not conf.has_option("repos", "use_system_repos") or conf.getboolean("repos", "use_system_repos"):
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for repo_file in glob("/etc/yum.repos.d/*.repo"):
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shutil.copy2(repo_file, repodir)
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dbo.read_all_repos()
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# Update the metadata from the enabled repos to speed up later operations
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log.info("Updating repository metadata")
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try:
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dbo.fill_sack(load_system_repo=False)
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dbo.read_comps()
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except dnf.exceptions.Error as e:
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log.error("Failed to update metadata: %s", str(e))
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raise RuntimeError("Fetching metadata failed: %s" % str(e))
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return dbo
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