124 lines
4.6 KiB
Python
124 lines
4.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Cloudbase Solutions Srl
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import sys
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from oslo.config import cfg
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from cloudbaseinit.metadata import factory as metadata_factory
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from cloudbaseinit.openstack.common import log as logging
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from cloudbaseinit.osutils import factory as osutils_factory
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from cloudbaseinit.plugins import base as plugins_base
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from cloudbaseinit.plugins import factory as plugins_factory
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opts = [
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cfg.BoolOpt('allow_reboot', default=True, help='Allows OS reboots '
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'requested by plugins'),
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cfg.BoolOpt('stop_service_on_exit', default=True, help='In case of '
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'execution as a service, specifies if the service '
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'must be gracefully stopped before exiting'),
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]
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CONF = cfg.CONF
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CONF.register_opts(opts)
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LOG = logging.getLogger(__name__)
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class InitManager(object):
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_PLUGINS_CONFIG_SECTION = 'Plugins'
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def _get_plugin_status(self, osutils, plugin_name):
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return osutils.get_config_value(plugin_name,
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self._PLUGINS_CONFIG_SECTION)
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def _set_plugin_status(self, osutils, plugin_name, status):
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osutils.set_config_value(plugin_name, status,
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self._PLUGINS_CONFIG_SECTION)
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def _exec_plugin(self, osutils, service, plugin, shared_data):
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plugin_name = plugin.get_name()
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status = self._get_plugin_status(osutils, plugin_name)
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if status == plugins_base.PLUGIN_EXECUTION_DONE:
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LOG.debug('Plugin \'%(plugin_name)s\' execution already done, '
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'skipping' % locals())
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else:
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LOG.info('Executing plugin \'%(plugin_name)s\'' %
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locals())
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try:
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(status, reboot_required) = plugin.execute(service,
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shared_data)
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self._set_plugin_status(osutils, plugin_name, status)
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return reboot_required
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except Exception, ex:
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LOG.error('plugin \'%(plugin_name)s\' failed '
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'with error \'%(ex)s\'' % locals())
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LOG.exception(ex)
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def _check_plugin_os_requirements(self, osutils, plugin):
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supported = False
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plugin_name = plugin.get_name()
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(required_platform, min_os_version) = plugin.get_os_requirements()
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if required_platform and sys.platform != required_platform:
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LOG.debug('Skipping plugin: \'%s\'. Platform not supported' %
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plugin_name)
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else:
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if not min_os_version:
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supported = True
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else:
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os_major, os_minor = min_os_version
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if osutils.check_os_version(os_major, os_minor):
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supported = True
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else:
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LOG.debug('Skipping plugin: \'%s\'. OS version not '
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'supported' % plugin_name)
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return supported
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def configure_host(self):
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osutils = osutils_factory.OSUtilsFactory().get_os_utils()
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osutils.wait_for_boot_completion()
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mdsf = metadata_factory.MetadataServiceFactory()
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service = mdsf.get_metadata_service()
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LOG.info('Metadata service loaded: \'%s\'' %
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service.get_name())
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plugins = plugins_factory.PluginFactory().load_plugins()
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plugins_shared_data = {}
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reboot_required = False
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try:
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for plugin in plugins:
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if self._check_plugin_os_requirements(osutils, plugin):
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if self._exec_plugin(osutils, service, plugin,
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plugins_shared_data):
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reboot_required = True
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if CONF.allow_reboot:
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break
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finally:
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service.cleanup()
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if reboot_required and CONF.allow_reboot:
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try:
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osutils.reboot()
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except Exception, ex:
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LOG.error('reboot failed with error \'%s\'' % ex)
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elif CONF.stop_service_on_exit:
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osutils.terminate()
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