# ============LICENSE_START====================================================
# org.onap.dcaegen2
# =============================================================================
# Copyright (c) 2017-2020 AT&T Intellectual Property. All rights reserved.
# =============================================================================
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============LICENSE_END======================================================

# Utility functions

import string
from random import SystemRandom

def random_string(n):
    '''
    Create a random alphanumeric string, n characters long.
    '''
    secureRandomGen = SystemRandom()
    return ''.join(secureRandomGen.choice(string.ascii_lowercase + string.ascii_uppercase + string.digits) for x in range(n))