156 lines
6.4 KiB
Python
156 lines
6.4 KiB
Python
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#
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# Kickstart module for subscription handling.
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#
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# Copyright (C) 2020 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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import os
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import sys
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from dasbus.typing import get_variant, Str
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from pyanaconda.core.configuration.anaconda import conf
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from pyanaconda.core.service import is_service_installed, start_service
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from pyanaconda.core.constants import RHSM_SERVICE_TIMEOUT
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from pyanaconda.modules.common.constants.objects import RHSM_CONFIG
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from pyanaconda.modules.common.constants.services import RHSM
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from pyanaconda.core.threads import thread_manager
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from pyanaconda.modules.common.task import Task
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from pyanaconda.modules.common.errors.task import NoResultError
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from pyanaconda.modules.subscription.constants import RHSM_SERVICE_NAME
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from pyanaconda.anaconda_loggers import get_module_logger
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log = get_module_logger(__name__)
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def check_initial_conditions():
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"""Can the Subscription service run?"""
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# Exclude the dir and image installations.
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if not conf.target.is_hardware:
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log.debug(
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"subscription: Unsupported type of the installation target. "
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"The Subscription module won't be started."
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)
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sys.exit(1)
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# Exclude environments without the rhsm service.
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if not is_service_installed(RHSM_SERVICE_NAME):
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log.debug(
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"subscription: The required rhsm systemd service is not available. "
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"The Subscription module won't be started."
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)
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sys.exit(1)
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class StartRHSMTask(Task):
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"""Task for starting the RHSM DBus service."""
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def __init__(self, verify_ssl=True):
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"""Create a new task for starting the RHSM DBus service.
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:param bool verify_ssl: True if RHSM should be configured to verify SSL certificates,
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False if RHSM should be set to *not* verify SSL certificates
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NOTE: If RHSM SSL verification is disabled, this is install time only, as we will
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always turn it back on unconditionally at the same time we roll back the RHSM
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log level change.
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"""
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super().__init__()
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self._verify_ssl = verify_ssl
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@property
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def name(self):
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return "Start RHSM DBus service"
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def run(self):
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"""Start the RHSM DBus service.
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And also some related tasks, such as setting RHSM log levels.
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"""
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# Due to a RHSM bug (https://bugzilla.redhat.com/show_bug.cgi?id=1700441)
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# we need to create /etc/yum.repos.d if it does not exist. Otherwise RHSM
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# will not create the expected redhat.repo file inside it.
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if not os.path.exists("/etc/yum.repos.d"):
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log.debug("subscription: creating /etc/yum.repos.d")
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os.mkdir("/etc/yum.repos.d")
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# start the rhsm.service
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# - this is blocking, but as we are effectively running in a thread
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# it should not be an issue
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# - if the return code is non-zero, return False immediately
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rc = start_service(RHSM_SERVICE_NAME)
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if rc:
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log.warning(
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"subscription: RHSM systemd service failed to start with error code: %s",
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rc
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)
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return False
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# create a temporary proxy to set the log levels
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rhsm_config_proxy = RHSM.get_proxy(RHSM_CONFIG, interface_name=RHSM_CONFIG)
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# set RHSM log levels to debug
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# - otherwise the RHSM log output is not usable for debugging subscription issues
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log.debug("subscription: setting RHSM log level to DEBUG")
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config_dict = {"logging.default_log_level": get_variant(Str, "DEBUG")}
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# turn OFF SSL certificate validation (if requested)
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if not self._verify_ssl:
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log.debug("subscription: disabling RHSM SSL certificate validation")
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config_dict["server.insecure"] = get_variant(Str, "1")
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# set all the values at once atomically
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rhsm_config_proxy.SetAll(config_dict, "")
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# all seems fine
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log.debug("subscription: RHSM service start successfully.")
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return True
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def is_service_available(self, timeout=RHSM_SERVICE_TIMEOUT):
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"""Return if RHSM service is available or wait if startup is ongoing."""
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if self.is_running:
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# Wait up to defined timeout for the service to startup
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# by joining the thread running the task. We specify a timeout when
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# joining to prevent a deadlocked task blocking this method forever.
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thread = thread_manager.get(self._thread_name)
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if thread:
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log.debug("subscription: waiting for RHSM service to start for up to %f seconds.",
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timeout)
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thread.join(timeout)
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else:
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log.error("subscription: RHSM startup task is running but no thread found.")
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return False
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# now check again if the task is still running
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if self.is_running:
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# looks like we timed out
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log.debug("subscription: RHSM service not available after waiting for %f seconds.",
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timeout)
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return False
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else:
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# If we got this far, the task has finished running. If the result is True
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# it was able to successfully start the systemd unit and connect to the DBus API.
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# If the result is False, then the service failed to start.
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try:
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result = self.get_result()
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except NoResultError:
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# if the task fails in weird ways, there could apparently be no result
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log.error("subscription: got no result from StartRHSMTask")
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result = False
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return result
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