apiBase_changes.py

class ConfigRuleset(dict):
    defaults = { 
        'name': 'no name',
    }   

    required = [ 
        'name',
    ]   

    def __init__(self):
        self.update(self.defaults)

    def validate(self):
        missing = []
        for key in self.required:
            if not self.has_key(key):
                missing.append(key)

        if len(missing):
            raise KeyError("The following required config keys are missing: %s" % missing)

class ConfigProvider(ConfigRuleset):
    src = None
    prop = re.compile(r"([\w. ]+)\s*=\s*(.*)")
        
    def __init__(self, source = "config.properties"):
        ConfigRuleset.__init__(self)
        self.src = source
        self.loadConfig()
        self.validate()

    ….