def __init__(self, logger=logging, instance_config_metadata=None):
"""Constructor.
Inherit from the ConfigManager class. Read the template for instance
defaults and write new sections and options. This prevents package
updates from overriding user set defaults.
Args:
logger: logger object, used to write to SysLog and serial port.
instance_config_metadata: string, a config file specified in metadata.
"""
self.logger = logger
self.instance_config_metadata = instance_config_metadata
self.instance_config_header %= (self.instance_config_script,
self.instance_config_template)
# User provided instance configs should always take precedence.
super(InstanceConfig,
self).__init__(config_file=self.instance_config_template,
config_header=self.instance_config_header)
# Use the instance config settings from metadata if specified. Then use
# settings in an instance config file if one exists. If a config
# file does not already exist, try to use the distro provided defaults. If
# no file exists, use the default configuration settings.
config_files = [self.instance_config, self.instance_config_distro]
config_defaults = []
if self.instance_config_metadata:
config = parser.SafeConfigParser()
try:
config.readfp(stringio.StringIO(self.instance_config_metadata))
except parser.Error as e:
self.logger.error('Error parsing metadata configs: %s', str(e))
else:
config_defaults.append(
dict(
(s, dict(config.items(s))) for s in config.sections()))
for config_file in config_files:
if os.path.exists(config_file):
config = parser.SafeConfigParser()
try:
config.read(config_file)
except parser.Error as e:
self.logger.error('Error parsing config file: %s', str(e))
else:
config_defaults.append(
dict((s, dict(config.items(s)))
for s in config.sections()))
config_defaults.append(self.instance_config_options)
for defaults in config_defaults:
for section, options in sorted(defaults.items()):
for option, value in sorted(options.items()):
super(InstanceConfig, self).SetOption(section,
option,
value,
overwrite=False)
def __init__(self):
"""Constructor.
Inherit from the ConfigManager class. Read the template for instance
defaults and write new sections and options. This prevents package
updates from overriding user set defaults.
"""
self.instance_config_header %= (
self.instance_config_script, self.instance_config_template)
# User provided instance configs should always take precedence.
super(InstanceConfig, self).__init__(
config_file=self.instance_config_template,
config_header=self.instance_config_header)
# Use the settings in an instance config file if one exists. If a config
# file does not already exist, try to use the distro provided defaults. If
# no file exists, use the default configuration settings.
config_files = [self.instance_config, self.instance_config_distro]
config_defaults = []
for config_file in config_files:
if os.path.exists(config_file):
config = parser.SafeConfigParser()
config.read(config_file)
config_defaults.append(
dict((s, dict(config.items(s))) for s in config.sections()))
config_defaults.append(self.instance_config_options)
for defaults in config_defaults:
for section, options in sorted(defaults.items()):
for option, value in sorted(options.items()):
super(InstanceConfig, self).SetOption(
section, option, value, overwrite=False)
def __init__(self):
"""Constructor.
Inherit from the ConfigManager class. Read the template for instance
defaults and write new sections and options. This prevents package
updates from overriding user set defaults.
"""
self.instance_config_header %= (self.instance_config_script,
self.instance_config_template)
super(InstanceConfig,
self).__init__(config_file=self.instance_config_template,
config_header=self.instance_config_header)
if os.path.exists(self.instance_config):
config = parser.SafeConfigParser()
config.read(self.instance_config)
defaults = dict(
(s, dict(config.items(s))) for s in config.sections())
else:
defaults = self.instance_config_options
for section, options in sorted(defaults.items()):
for option, value in sorted(options.items()):
super(InstanceConfig, self).SetOption(section,
option,
value,
overwrite=False)
def __init__(self, config_file=None, config_header=None):
"""Constructor.
Args:
config_file: string, the location of the config file.
config_header: string, the message to write at the top of the config.
"""
self.config_file = config_file or CONFIG
self.config_header = config_header
self.config = parser.SafeConfigParser()
self.config.read(self.config_file)