Example #1
0
class Policy:
    def __init__(self, policy_string):
        self.logger = logging.getLogger('mom.Policy')
        self.policy_string = policy_string
        self.evaluator = Evaluator()
        self.code = get_code(self.evaluator, self.policy_string)

    def get_string(self):
        return self.policy_string

    def evaluate(self, host, guest_list):
        results = []
        self.evaluator.stack.set('Host', host, alloc=True)
        self.evaluator.stack.set('Guests', guest_list, alloc=True)
        
        try:
            for expr in self.code:
                results.append(self.evaluator.eval(expr))
            self.logger.debug("Results: %s" % results)
        except PolicyError as e:
            self.logger.error("Policy error: %s" % e)
            return False
        except Exception as e:
            self.logger.error("Unexpected error when evaluating policy: %s" % e)
            return False
        return True
Example #2
0
 def set_policy(self, name, policyStr):
     if name is None:
         name = DEFAULT_POLICY_NAME
     with self.policy_sem:
         oldStr = self.policy_strings.get(name)
         if policyStr is None:
             try:
                 del self.policy_strings[name]
                 self.logger.info("Deleted policy '%s'", name)
             except KeyError:
                 pass
         else:
             self.policy_strings[name] = policyStr
         try:
             self.code = get_code(Evaluator(), self._cat_policies())
         except PolicyError, e:
             self.logger.warn("Unable to load policy: %s" % e)
             if oldStr is None:
                 del self.policy_strings[name]
             else:
                 self.policy_strings[name] = oldStr
             return False
         if policyStr:
             self.logger.info("Loaded policy '%s'", name)
         return True
Example #3
0
    def evaluate(self, host, guest_list):
        results = []
        # each run needs separate evaluator so the stack is clean
        evaluator = Evaluator()
        evaluator.stack.set('Host', host, alloc=True)
        evaluator.stack.set('Guests', guest_list, alloc=True)

        with self.policy_sem:
            try:
                for expr in self.code:
                    results.append(evaluator.eval(expr))
                self.logger.debug("Results: %s" % results)
            except PolicyError as e:
                self.logger.error("Policy error: %s" % e)
                return False
            except Exception as e:
                self.logger.error("Unexpected error when evaluating policy: %s" % e)
                return False
        return True
Example #4
0
    def evaluate(self, host, guest_list):
        results = []
        # each run needs separate evaluator so the stack is clean
        evaluator = Evaluator()
        evaluator.stack.set('Host', host, alloc=True)
        evaluator.stack.set('Guests', guest_list, alloc=True)

        with self.policy_sem:
            try:
                for expr in self.code:
                    results.append(evaluator.eval(expr))
                self.logger.debug("Results: %s" % results)
            except PolicyError as e:
                self.logger.error("Policy error: %s" % e)
                return False
            except Exception as e:
                self.logger.error(
                    "Unexpected error when evaluating policy: %s" % e)
                return False
        return True
Example #5
0
class Policy:
    def __init__(self, policy_string):
        self.policy_string = policy_string
        self.evaluator = Evaluator()
        self.code = get_code(self.evaluator, self.policy_string)

    def get_string(self):
        return self.policy_string

    def evaluate(self, host, guest_list):
        results = []
        self.evaluator.stack.set('Host', host, alloc=True)
        self.evaluator.stack.set('Guests', guest_list, alloc=True)
        
        try:
            for expr in self.code:
                results.append(self.evaluator.eval(expr))
            print "Results: %s" % results
        except Exception as e:
            print "Exception when processing rules: %s" % e
            return False
        return True
Example #6
0
 def __init__(self, policy_string):
     self.logger = logging.getLogger('mom.Policy')
     self.policy_string = policy_string
     self.evaluator = Evaluator()
     self.code = get_code(self.evaluator, self.policy_string)
Example #7
0
 def __init__(self, policy_string):
     self.policy_string = policy_string
     self.evaluator = Evaluator()
     self.code = get_code(self.evaluator, self.policy_string)