# Copyright 2021 Max Planck Institute for Software Systems, and
# National University of Singapore
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

import json
import os
import re


def parse_nopaxos_run(num_c, path):

    if not os.path.exists(path):
        return None

    ret = {}
    ret['throughput'] = None
    ret['latency'] = None

    tp_pat = re.compile(r'(.*)Total throughput is *([0-9\.]*) ops/sec(.*)')
    lat_pat = re.compile(r'(.*)Median latency is *([0-9\.]*) us(.*)')

    with open(path, 'r', encoding='utf-8') as f_log:
        log = json.load(f_log)

        total_tput = 0
        total_lat = 0
        for i in range(num_c):
            sim_name = f'host.client.{i}'

            # in this host log stdout
            for j in log['sims'][sim_name]['stdout']:
                m_t = tp_pat.match(j)
                m_l = lat_pat.match(j)
                if m_l:
                    total_lat += float(m_l.group(2))
                if m_t:
                    total_tput += int(m_t.group(2))

        avg_lat = total_lat / num_c
        ret['throughput'] = total_tput
        ret['latency'] = int(avg_lat)

    return ret
