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import grpc, logging
from typing import Dict, List, Set, Tuple
from common.Checkers import chk_string
from common.exceptions.ServiceException import ServiceException
from service.proto.context_pb2 import Constraint
def check_constraint(
logger : logging.Logger, constraint_number : int, parent_name : str, constraint : Constraint,
add_constraints : Dict[str, Dict[str, Set[str]]]) -> Tuple[str, str]:
try:
constraint_type = chk_string('constraint[#{}].constraint_type'.format(constraint_number),
constraint.constraint_type,
allow_empty=False)
constraint_value = chk_string('constraint[#{}].constraint_value'.format(constraint_number),
constraint.constraint_value,
allow_empty=False)
except Exception as e:
logger.exception('Invalid arguments:')
raise ServiceException(grpc.StatusCode.INVALID_ARGUMENT, str(e))
if constraint_type in add_constraints:
msg = 'Duplicated ConstraintType({}) in {}.'
msg = msg.format(constraint_type, parent_name)
raise ServiceException(grpc.StatusCode.INVALID_ARGUMENT, msg)
add_constraints[constraint_type] = constraint_value
return constraint_type, constraint_value
def check_constraints(logger : logging.Logger, parent_name : str, constraints):
add_constraints : Dict[str, str] = {}
constraint_tuples : List[Tuple[str, str]] = []
for constraint_number,constraint in enumerate(constraints):
parent_name = 'Constraint(#{}) of {}'.format(constraint_number, parent_name)
constraint_type, constraint_value = check_constraint(
logger, constraint_number, parent_name, constraint, add_constraints)
constraint_tuples.append((constraint_type, constraint_value))
return constraint_tuples