Gestionnaire de fichiers - Editer - /usr/lib/python2.7/site-packages/vdo/vdomgmnt/Service.py
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# # Copyright (c) 2018 Red Hat, Inc. # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty 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. # """ Service - Abstract superclass for services $Id: //eng/vdo-releases/magnesium/src/python/vdo/vdomgmnt/Service.py#2 $ """ from . import ExitStatus from utils import Logger, YAMLObject class ServiceError(ExitStatus, Exception): """Base class for service errors. """ ###################################################################### # Public methods ###################################################################### ###################################################################### # Overridden methods ###################################################################### def __init__(self, msg = "", *args, **kwargs): super(ServiceError, self).__init__(*args, **kwargs) self._msg = msg ###################################################################### def __str__(self): return self._msg ###################################################################### # Protected methods ###################################################################### ######################################################################## class Service(YAMLObject): """Superclass for services. Every subclass of Service controls a service (such as an Albireo index or a VDO target) managed by this command. The create/remove/ have methods are one-time operations that do things like 'albcreate' that are persistent, while start/stop/running are used to control the availability of the service, either manually or automatically at system boot and shutdown. The control commands are idempotent, and return values specified as exit codes for /etc/init.d scripts specified in the LSB. Methods: getName (method on Service) returns a name for the object create creates the service; done once, paired with 'remove' remove removes the service have returns True if the service has been created start starts the service; idempotent; run at system boot stop stops the service; idempotent; run at shutdown running returns True if the service is running getKeys returns a list of the keys to be stored in the configuration file status returns the status of the service in YAML format """ log = Logger.getLogger(Logger.myname + '.Service') yaml_tag = u"!Service" ###################################################################### # Public methods ###################################################################### @staticmethod def getKeys(): """Returns a list of keys to be stored in the configuration file.""" return [] ###################################################################### def getName(self): """Returns the name of a Service, as a string.""" return self._name ###################################################################### # Overridden methods ###################################################################### @property def _yamlAttributeKeys(self): keys = ["name"] keys.extend(self.getKeys()) return keys ###################################################################### @property def _yamlData(self): data = super(Service, self)._yamlData data["name"] = self.getName() return data ###################################################################### def _yamlSetAttributes(self, attributes): super(Service, self)._yamlSetAttributes(attributes) self._name = attributes["name"] ###################################################################### @property def _yamlSpeciallyHandledAttributes(self): specials = super(Service, self)._yamlSpeciallyHandledAttributes specials.extend(["name"]) return specials ###################################################################### def __init__(self, name): super(Service, self).__init__() self._name = name ###################################################################### def __str__(self): return "{0}({1})".format(type(self).__name__, self.getName()) ###################################################################### # Protected methods ###################################################################### def _reprAttribute(self, key): """Returns a boolean indicating if the entry represented by 'key' from the instance's __dict__ should be included in the __repr__ result. Arguments: key (str): key from instance's __dict__ Returns: bool: True, if the __dict__ entry with the specified key should be included in the __repr__ result False, otherwise """ return not key.startswith('_')
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