wiki配置管理

def _makeConfig(name):
    """ Create and return a config instance

    Timestamp config with either module mtime or farmconfig mtime. This
    mtime can be used later to invalidate older caches.

    @param name: module name
    @rtype: DefaultConfig sub class instance
    @return: new configuration instance
    """
    global _farmconfig_mtime
    try:
        module, mtime = _importConfigModule(name)
        configClass = getattr(module, 'Config')
        cfg = configClass(name)
        cfg.cfg_mtime = max(mtime, _farmconfig_mtime)
        logging.info("using wiki config: %s" % os.path.abspath(module.__file__))
    except ImportError, err:
        logging.exception('Could not import.')
        msg = """ImportError: %(err)s

Check that the file is in the same directory as the server script. If
it is not, you must add the path of the directory where the file is
located to the python path in the server script. See the comments at
the top of the server script.

Check that the configuration file name is either "wikiconfig.py" or the
module name specified in the wikis list in farmconfig.py. Note that the
module name does not include the ".py" suffix.
""" % {
    'err': err,
}
        raise error.ConfigurationError(msg)
    except AttributeError, err:
        logging.exception('An exception occured.')
        msg = """AttributeError: %(err)s

Could not find required "Config" class in "%(name)s.py".

This might happen if you are trying to use a pre 1.3 configuration file, or
made a syntax or spelling error.

Another reason for this could be a name clash. It is not possible to have
config names like e.g. stats.py - because that collides with MoinMoin/stats/ -
have a look into your MoinMoin code directory what other names are NOT
possible.

Please check your configuration file. As an example for correct syntax,
use the wikiconfig.py file from the distribution.
""" % {
    'name': name,
    'err': err,
}
        raise error.ConfigurationError(msg)

    return cfg


def _getConfigName(url):
    """ Return config name for url or raise """
    for name, regex in _url_re_list():
        match = regex.match(url)
        if match:
            return name
    raise error.NoConfigMatchedError


def getConfig(url):
    """ Return cached config instance for url or create new one

    If called by many threads in the same time multiple config
    instances might be created. The first created item will be
    returned, using dict.setdefault.

    @param url: the url from request, possibly matching specific wiki
    @rtype: DefaultConfig subclass instance
    @return: config object for specific wiki
    """
    cfgName = _getConfigName(url)
    try:
        cfg = _config_cache[cfgName]
    except KeyError:
        cfg = _makeConfig(cfgName)
        cfg = _config_cache.setdefault(cfgName, cfg)
    return cfg


# This is a way to mark some text for the gettext tools so that they don't
# get orphaned. See http://www.python.org/doc/current/lib/node278.html.
def _(text):
    return text


class CacheClass:
    """ just a container for stuff we cache """
    pass


class ConfigFunctionality(object):
    """ Configuration base class with config class behaviour.

        This class contains the functionality for the DefaultConfig
        class for the benefit of the WikiConfig macro.
    """

    # attributes of this class that should not be shown
    # in the WikiConfig() macro.
    cfg_mtime = None
    siteid = None
    cache = None
    mail_enabled = None
    jabber_enabled = None
    auth_can_logout = None
    auth_have_login = None
    auth_login_inputs = None
    _site_plugin_lists = None
    _iwid = None
    _iwid_full = None
    xapian_searchers = None
    moinmoin_dir = None
    # will be lazily loaded by interwiki code when needed (?)
    shared_intermap_files = None