# Copyright 2020 Google LLC
#
# 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.
"""Tools for using oss-fuzz."""
import functools
import os

from common import utils
from common import yaml_utils
from common import logs

logger = logs.Logger()

BENCHMARKS_DIR = os.path.join(utils.ROOT_DIR, 'benchmarks')


def get_config_file(benchmark):
    """Returns the path to the config for a benchmark."""
    return os.path.join(BENCHMARKS_DIR, benchmark, 'benchmark.yaml')


@functools.lru_cache(maxsize=None)
def get_config(benchmark):
    """Returns a dictionary containing the config for a benchmark."""
    config_file = get_config_file(benchmark)
    if os.path.isfile(config_file):
        return yaml_utils.read(config_file)
    logger.warning('Benchmark config does not exist: %s.', config_file)
    return {}
