#!/usr/bin/python
# Copyright 2017 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Utility to cleanup TKO database by removing old records.
"""

import argparse
import logging
import os
import time

import common
from autotest_lib.client.bin import utils
from autotest_lib.client.common_lib import global_config
from autotest_lib.client.common_lib import logging_config

from chromite.lib import metrics


CONFIG = global_config.global_config

# SQL command to remove old test results in TKO database.
CLEANUP_TKO_CMD = 'call remove_old_tests_sp()'
CLEANUP_METRICS = 'chromeos/autotest/tko_cleanup_duration'


def parse_options():
    """Parse command line inputs.

    @return: Options to run the script.
    """
    parser = argparse.ArgumentParser()
    parser.add_argument('-l', '--logfile', type=str,
                        default=None,
                        help='Path to the log file to save logs.')
    return parser.parse_args()


def main():
    """Main script."""
    options = parse_options()
    log_config = logging_config.LoggingConfig()
    if options.logfile:
        log_config.add_file_handler(
                file_path=os.path.abspath(options.logfile), level=logging.DEBUG)

    server = CONFIG.get_config_value(
                'AUTOTEST_WEB', 'global_db_host',
                default=CONFIG.get_config_value('AUTOTEST_WEB', 'host'))
    user = CONFIG.get_config_value(
                'AUTOTEST_WEB', 'global_db_user',
                default=CONFIG.get_config_value('AUTOTEST_WEB', 'user'))
    password = CONFIG.get_config_value(
                'AUTOTEST_WEB', 'global_db_password',
                default=CONFIG.get_config_value('AUTOTEST_WEB', 'password'))
    database = CONFIG.get_config_value(
                'AUTOTEST_WEB', 'global_db_database',
                default=CONFIG.get_config_value('AUTOTEST_WEB', 'database'))

    logging.info('Start cleaning up old records in TKO database %s on server '
                 '%s.', database, server)

    start_time = time.time()
    try:
        utils.run_sql_cmd(server, user, password, CLEANUP_TKO_CMD, database)
    except:
        logging.exception('Cleanup failed with exception.')
    finally:
        duration = time.time() - start_time
        metrics.SecondsDistribution(CLEANUP_METRICS).add(
                    duration, fields={'server': server})
        logging.info('Cleanup finished in %s seconds.', duration)


if __name__ == '__main__':
    main()