# Copyright (c) 2015 Mirantis Inc.
#
# 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.

import testtools

from shaker.engine.executors import base
from shaker.engine.executors import iperf


IP = '10.0.0.10'
AGENT = {'slave': {'ip': IP}}


class TestIperfGraphExecutor(testtools.TestCase):

    def test_get_command(self):
        executor = iperf.IperfGraphExecutor({}, AGENT)

        expected = {'data': ('sudo nice -n -20 iperf --client %s --format m '
                             '--time 60 --parallel 1 --interval 1 --nodelay '
                             '--reportstyle C') % IP,
                    'type': 'program'}
        self.assertEqual(expected, executor.get_command())

    def test_get_command_udp(self):
        executor = iperf.IperfGraphExecutor(
            {'udp': True, 'bandwidth': '100M', 'time': 30,
             'datagram_size': 1470}, AGENT)

        expected = {'data': ('sudo nice -n -20 iperf --client %s --format m '
                             '--udp --bandwidth 100M --len 1470 '
                             '--time 30 --parallel 1 --interval 1 --nodelay '
                             '--reportstyle C') % IP,
                    'type': 'program'}
        self.assertEqual(expected, executor.get_command())

    def test_process_reply(self):
        executor = iperf.IperfGraphExecutor({}, AGENT)
        message = {
            'stdout': """
20150224134955,172.1.7.77,47351,172.1.76.77,5001,3,0.0-1.0,50068684,399507456
20150224134956,172.1.7.77,47351,172.1.76.77,5001,3,1.0-2.0,51605504,412090368
20150224134957,172.1.7.77,47351,172.1.76.77,5001,3,2.0-3.0,50843648,405798912
20150224134957,172.1.7.77,47351,172.1.76.77,5001,3,0.0-3.0,150843648,400000002
"""
        }
        expected = {
            'samples': [
                [1.0, 399507456],
                [2.0, 412090368],
                [3.0, 405798912],
            ],
            'meta': [
                ['time', 's'], ['bandwidth', 'bit/s']
            ]
        }
        reply = executor.process_reply(message)
        self.assertEqual(expected['samples'], reply['samples'],
                         message='Samples data')
        self.assertEqual(expected['meta'], reply['meta'],
                         message='Metadata')

    def test_process_reply_multiple_threads(self):
        executor = iperf.IperfGraphExecutor({'threads': 2}, AGENT)
        message = {
            'stdout': """
20150610102341,10.0.0.3,53479,10.0.0.2,5001,4,0.0-1.0,30277632,242221056
20150610102341,10.0.0.3,53478,10.0.0.2,5001,3,0.0-1.0,23461888,187695104
20150610102341,10.0.0.3,0,10.0.0.2,5001,-1,0.0-1.0,53739520,429916160
20150610102342,10.0.0.3,53479,10.0.0.2,5001,4,1.0-2.0,41418752,331350016
20150610102342,10.0.0.3,53478,10.0.0.2,5001,3,1.0-2.0,22806528,182452224
20150610102342,10.0.0.3,53478,10.0.0.2,5001,3,0.0-2.0,46268416,370147328
20150610102342,10.0.0.3,0,10.0.0.2,5001,-1,1.0-2.0,64225280,513802240
20150610102440,10.0.0.3,53479,10.0.0.2,5001,4,0.0-2.0,71696384,573571072
20150610102440,10.0.0.3,0,10.0.0.2,5001,-1,0.0-2.0,117964800,479810974\n
"""
        }
        expected = {
            'samples': [
                [1.0, 429916160],
                [2.0, 513802240],
            ],
            'meta': [
                ['time', 's'], ['bandwidth', 'bit/s']
            ]
        }
        reply = executor.process_reply(message)
        self.assertEqual(expected['samples'], reply['samples'],
                         message='Samples data')
        self.assertEqual(expected['meta'], reply['meta'],
                         message='Metadata')

    def test_process_empty_reply(self):
        executor = iperf.IperfGraphExecutor({}, AGENT)
        message = {
            'stdout': '',
            'stderr': 'Error!',
        }
        self.assertRaises(
            base.ExecutorException, executor.process_reply, message)


class TestIperf3Executor(testtools.TestCase):

    def test_get_command(self):
        executor = iperf.Iperf3Executor({}, AGENT)

        expected = {'data': ('sudo nice -n -20 iperf3 --client %s --format m '
                             '--time 60 --parallel 1 --interval 1 '
                             '--json') % IP,
                    'type': 'program'}
        self.assertEqual(expected, executor.get_command())

    def test_get_command_udp(self):
        executor = iperf.Iperf3Executor(
            {'udp': True, 'bandwidth': '100M', 'time': 30,
             'datagram_size': 1470}, AGENT)

        expected = {'data': ('sudo nice -n -20 iperf3 --client %s --format m '
                             '--udp --bandwidth 100M --len 1470 '
                             '--time 30 --parallel 1 --interval 1 '
                             '--json') % IP,
                    'type': 'program'}
        self.assertEqual(expected, executor.get_command())

    def test_process_reply_tcp(self):
        executor = iperf.Iperf3Executor({}, AGENT)
        message = {
            'stdout': """
{
    "start": {},
    "intervals": [
        {
            "streams": [],
            "sum": {
                "start": 0,
                "end": 1.00002,
                "seconds": 1.00002,
                "bytes": 1712000,
                "bits_per_second": 1.36958e+07,
                "retransmits": 0
            }
        },
        {
            "streams": [],
            "sum": {
                "start": 1.00002,
                "end": 2.00001,
                "seconds": 0.999995,
                "bytes": 2043392,
                "bits_per_second": 1.63472e+07,
                "retransmits": 1
            }
        },
        {
            "streams": [],
            "sum": {
                "start": 2.00001,
                "end": 3.00002,
                "seconds": 1,
                "bytes": 2015872,
                "bits_per_second": 1.61269e+07,
                "retransmits": 0
            }
        }
    ],
    "end": {}
}"""
        }
        expected = {
            'samples': [
                [1.0, 13695800.0, 0],
                [2.0, 16347200.0, 1],
                [3.0, 16126900.0, 0],
            ],
            'meta': [
                ['time', 's'], ['bandwidth', 'bit/s'], ['retransmits', '']
            ]
        }
        reply = executor.process_reply(message)
        self.assertEqual(expected['samples'], reply['samples'],
                         message='Samples data')
        self.assertEqual(expected['meta'], reply['meta'],
                         message='Metadata')

    def test_process_reply_udp(self):
        executor = iperf.Iperf3Executor({'udp': True}, AGENT)
        message = {
            'stdout': """
{
    "start": {},
    "intervals": [
        {
            "streams": [],
            "sum": {
                "start": 0,
                "end": 1.00002,
                "seconds": 1.00002,
                "bytes": 1712000,
                "bits_per_second": 1.36958e+07,
                "packets": 53500
            }
        },
        {
            "streams": [],
            "sum": {
                "start": 1.00002,
                "end": 2.00001,
                "seconds": 0.999995,
                "bytes": 2043392,
                "bits_per_second": 1.63472e+07,
                "packets": 63856
            }
        },
        {
            "streams": [],
            "sum": {
                "start": 2.00001,
                "end": 3.00002,
                "seconds": 1,
                "bytes": 2015872,
                "bits_per_second": 1.61269e+07,
                "packets": 62996
            }
        }
    ],
    "end": {}
}"""
        }
        expected = {
            'samples': [
                [1.0, 53500],
                [2.0, 63856],
                [3.0, 62996],
            ],
            'meta': [
                ['time', 's'], ['packets', 'pps']
            ]
        }
        reply = executor.process_reply(message)
        self.assertEqual(expected['samples'], reply['samples'],
                         message='Samples data')
        self.assertEqual(expected['meta'], reply['meta'],
                         message='Metadata')
