# Copyright 2022 Max Planck Institute for Software Systems, and
# National University of Singapore
#
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# 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.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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"""
Generates data file for dist_memcache scalability graph.

First column is the number of hosts, second column the qemu timing simulation
time in hours, and the third column is the gem5 simulation time.
"""

import json
import sys
from os.path import exists

if len(sys.argv) != 2:
    print('Usage: dist_memcache.py OUTDIR')
    sys.exit(1)

basedir = sys.argv[1] + '/'
n_hosts_per_rack = 40
racks = [1, 5, 10, 15, 25]
host_types = ['qt', 'gem5']

for n_racks in racks:
    l = str(n_racks * n_hosts_per_rack)
    for host_type in host_types:
        log_path = (
            f'{basedir}dist_memcache-{host_type}-{n_racks}-{n_hosts_per_rack}'
            '-1.json'
        )
        if exists(log_path):
            with open(log_path, 'r', encoding='utf-8') as log:
                exp_log = json.load(log)
                start_time = exp_log['start_time']
                end_time = exp_log['end_time']
                diff_time = float(end_time - start_time) / 60 / 60
        else:
            diff_time = ''

        l += '\t' + str(diff_time)

    print(l)
