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#!/usr/bin/env python
"""This tool examines your Bcfg2 specifications for errors."""
__revision__ = '$Revision$'
import sys
import inspect
import logging
import ConfigParser
import Bcfg2.Logger
import Bcfg2.Options
import Bcfg2.Server.Core
import Bcfg2.Server.Lint
logger = logging.getLogger('bcfg2-lint')
class Parser(ConfigParser.ConfigParser):
def get(self, section, option, default):
""" Override ConfigParser.get: If the request option is not in
the config file then return the value of default rather than
raise an exception. We still raise exceptions on missing
sections.
"""
try:
return ConfigParser.ConfigParser.get(self, section, option)
except (ConfigParser.NoOptionError, ConfigParser.NoSectionError):
return default
def run_serverless_plugins(plugins, config=None, setup=None):
logger.debug("Running serverless plugins")
errors = (0, 0)
for plugin_name, plugin in plugins.items():
plugin_errors = run_plugin(plugin, plugin_name,
setup=setup, config=config, files=files)
errors = [errors[n] + plugin_errors[n]
for n in range(0, len(errors))]
return errors
def run_server_plugins(plugins, config=None, setup=None):
core = load_server(setup)
logger.debug("Running server plugins")
errors = (0, 0)
for plugin_name, plugin in plugins.items():
plugin_errors = run_plugin(plugin, plugin_name, args=[core],
setup=setup, config=config, files=files)
errors = [errors[n] + plugin_errors[n]
for n in range(0, len(errors))]
return errors
def run_plugin(plugin, plugin_name, setup=None, args=None, config=None,
files=None):
logger.debug(" Running %s" % plugin_name)
if args is None:
args = []
if config is not None and config.has_section(plugin_name):
args.append(dict(config.items(plugin_name), **setup))
else:
args.append(setup)
# older versions of python do not support mixing *-magic and
# non-*-magic (e.g., "plugin(*args, files=files)", so we do this
# all with *-magic
kwargs = dict(files=files)
try:
return plugin(*args, **kwargs).Run()
except Exception, err:
logger.error("Failed to run plugin %s: %s" % (plugin, err))
raise SystemExit(1)
def load_server(setup):
""" load server """
core = Bcfg2.Server.Core.Core(setup['repo'], setup['plugins'],
setup['password'], setup['encoding'])
if setup['event debug']:
core.fam.debug = True
core.fam.handle_events_in_interval(4)
return core
if __name__ == '__main__':
optinfo = {
'configfile': Bcfg2.Options.CFILE,
'help': Bcfg2.Options.HELP,
'verbose': Bcfg2.Options.VERBOSE,
}
optinfo.update({
'event debug': Bcfg2.Options.DEBUG,
'encoding': Bcfg2.Options.ENCODING,
# Server options
'repo': Bcfg2.Options.SERVER_REPOSITORY,
'plugins': Bcfg2.Options.SERVER_PLUGINS,
'mconnect': Bcfg2.Options.SERVER_MCONNECT,
'filemonitor': Bcfg2.Options.SERVER_FILEMONITOR,
'location': Bcfg2.Options.SERVER_LOCATION,
'static': Bcfg2.Options.SERVER_STATIC,
'key': Bcfg2.Options.SERVER_KEY,
'cert': Bcfg2.Options.SERVER_CERT,
'ca': Bcfg2.Options.SERVER_CA,
'password': Bcfg2.Options.SERVER_PASSWORD,
'protocol': Bcfg2.Options.SERVER_PROTOCOL,
# More options
'logging': Bcfg2.Options.LOGGING_FILE_PATH,
'stdin': Bcfg2.Options.FILES_ON_STDIN,
'schema': Bcfg2.Options.SCHEMA_PATH,
'config': Bcfg2.Options.Option('Specify bcfg2-lint configuration file',
'/etc/bcfg2-lint.conf',
cmd='--lint-config',
odesc='<conffile>',
long_arg = True),
})
setup = Bcfg2.Options.OptionParser(optinfo)
setup.parse(sys.argv[1:])
log_args = dict(to_syslog=False, to_console=logging.WARNING)
if setup['verbose']:
log_args['to_console'] = logging.DEBUG
Bcfg2.Logger.setup_logging('bcfg2-info', **log_args)
config = Parser()
config.read(setup['config'])
# get list of plugins to run
if setup['args']:
allplugins = setup['args']
elif "bcfg2-repo-validate" in sys.argv[0]:
allplugins = 'Duplicates,RequiredAttrs,Validate'.split(',')
else:
allplugins = config.get('main', 'plugins',
",".join(Bcfg2.Server.Lint.__all__)).split(',')
if setup['stdin']:
files = [s.strip() for s in sys.stdin.readlines()]
else:
files = None
# load plugins
serverplugins = {}
serverlessplugins = {}
for plugin_name in allplugins:
try:
mod = getattr(__import__("Bcfg2.Server.Lint.%s" %
(plugin_name)).Server.Lint, plugin_name)
except ImportError:
try:
mod = __import__(plugin_name)
except Exception, err:
logger.error("Failed to load plugin %s: %s" % (plugin_name,
err))
raise SystemExit(1)
plugin = getattr(mod, plugin_name)
if [c for c in inspect.getmro(plugin)
if c == Bcfg2.Server.Lint.ServerPlugin]:
serverplugins[plugin_name] = plugin
else:
serverlessplugins[plugin_name] = plugin
# errors is a tuple of (errors, warnings)
errors = run_serverless_plugins(serverlessplugins,
config=config, setup=setup)
if serverplugins:
perrors = run_server_plugins(serverplugins, config=config, setup=setup)
errors = [errors[n] + perrors[n] for n in range(0, len(errors))]
if errors[0] or errors[1] or setup['verbose']:
print "%d errors" % errors[0]
print "%d warnings" % errors[1]
if errors[0]:
raise SystemExit(2)
elif errors[1]:
raise SystemExit(3)
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