本文整理汇总了Python中trove.guestagent.common.configuration.ConfigurationManager.get_user_override方法的典型用法代码示例。如果您正苦于以下问题：Python ConfigurationManager.get_user_override方法的具体用法？Python ConfigurationManager.get_user_override怎么用？Python ConfigurationManager.get_user_override使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类trove.guestagent.common.configuration.ConfigurationManager的用法示例。
在下文中一共展示了ConfigurationManager.get_user_override方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: VerticaApp
# 需要导入模块: from trove.guestagent.common.configuration import ConfigurationManager [as 别名]
# 或者: from trove.guestagent.common.configuration.ConfigurationManager import get_user_override [as 别名]
class VerticaApp(object):
"""Prepares DBaaS on a Guest container."""
def __init__(self, status):
self.state_change_wait_time = CONF.state_change_wait_time
self.status = status
revision_dir = \
guestagent_utils.build_file_path(
os.path.join(MOUNT_POINT,
os.path.dirname(system.VERTICA_ADMIN)),
ConfigurationManager.DEFAULT_STRATEGY_OVERRIDES_SUB_DIR)
if not operating_system.exists(FAKE_CFG):
operating_system.write_file(FAKE_CFG, '', as_root=True)
operating_system.chown(FAKE_CFG, system.VERTICA_ADMIN,
system.VERTICA_ADMIN_GRP, as_root=True)
operating_system.chmod(FAKE_CFG, FileMode.ADD_GRP_RX_OTH_RX(),
as_root=True)
self.configuration_manager = \
ConfigurationManager(FAKE_CFG, system.VERTICA_ADMIN,
system.VERTICA_ADMIN_GRP,
PropertiesCodec(delimiter='='),
requires_root=True,
override_strategy=ImportOverrideStrategy(
revision_dir, "cnf"))
def update_overrides(self, context, overrides, remove=False):
if overrides:
self.apply_overrides(overrides)
def remove_overrides(self):
config = self.configuration_manager.get_user_override()
self._reset_config(config)
self.configuration_manager.remove_user_override()
def apply_overrides(self, overrides):
self.configuration_manager.apply_user_override(overrides)
self._apply_config(overrides)
def _reset_config(self, config):
try:
db_password = self._get_database_password()
for k, v in config.iteritems():
alter_db_cmd = system.ALTER_DB_RESET_CFG % (DB_NAME, str(k))
out, err = system.exec_vsql_command(db_password, alter_db_cmd)
if err:
if err.is_warning():
LOG.warning(err)
else:
LOG.error(err)
raise RuntimeError(_("Failed to remove config %s") % k)
except Exception:
LOG.exception(_("Vertica configuration remove failed."))
raise RuntimeError(_("Vertica configuration remove failed."))
LOG.info(_("Vertica configuration reset completed."))
def _apply_config(self, config):
try:
db_password = self._get_database_password()
for k, v in config.iteritems():
alter_db_cmd = system.ALTER_DB_CFG % (DB_NAME, str(k), str(v))
out, err = system.exec_vsql_command(db_password, alter_db_cmd)
if err:
if err.is_warning():
LOG.warning(err)
else:
LOG.error(err)
raise RuntimeError(_("Failed to apply config %s") % k)
except Exception:
LOG.exception(_("Vertica configuration apply failed"))
raise RuntimeError(_("Vertica configuration apply failed"))
LOG.info(_("Vertica config apply completed."))
def _enable_db_on_boot(self):
try:
command = ["sudo", "su", "-", system.VERTICA_ADMIN, "-c",
(system.SET_RESTART_POLICY % (DB_NAME, "always"))]
subprocess.Popen(command)
command = ["sudo", "su", "-", "root", "-c",
(system.VERTICA_AGENT_SERVICE_COMMAND % "enable")]
subprocess.Popen(command)
except Exception:
LOG.exception(_("Failed to enable db on boot."))
raise RuntimeError("Could not enable db on boot.")
def _disable_db_on_boot(self):
try:
command = (system.SET_RESTART_POLICY % (DB_NAME, "never"))
system.shell_execute(command, system.VERTICA_ADMIN)
command = (system.VERTICA_AGENT_SERVICE_COMMAND % "disable")
system.shell_execute(command)
except exception.ProcessExecutionError:
LOG.exception(_("Failed to disable db on boot."))
raise RuntimeError("Could not disable db on boot.")
def stop_db(self, update_db=False, do_not_start_on_reboot=False):
"""Stop the database."""
LOG.info(_("Stopping Vertica."))
#.........这里部分代码省略.........