139 lines
4.5 KiB
Python
139 lines
4.5 KiB
Python
# osmo_ms_driver: Location Update Test
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# Create MS's and wait for the Location Update to succeed.
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#
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# Copyright (C) 2018 by Holger Hans Peter Freyther
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from datetime import timedelta
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from .test_support import TestBase
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import collections
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import json
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import time
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# Key used for the result dictionary
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LU_RESULT_NAME = 'lu_time'
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def has_lu_time(result):
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"""
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Returns true if a LU occurred.
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"""
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return result.has_result(LU_RESULT_NAME)
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def lu_time(result):
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"""
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Returns the time of the LU occurrence.
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"""
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return result.get_result(LU_RESULT_NAME, default=0)
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def lu_delay(result):
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"""
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Returns the delay from LU success to MS start time.
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"""
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return lu_time(result) - result.start_time()
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def set_lu_time(result, time):
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"""
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Sets/Overrides the time of the LU success for this MS.
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"""
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result.set_result(LU_RESULT_NAME, time)
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LUStats = collections.namedtuple("LUStats", ["num_attempted", "num_completed",
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"min_latency", "max_latency"])
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class MassUpdateLocationTest(TestBase):
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def __init__(self, name, event_server, results):
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super().__init__(name, event_server, results)
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self._event_server.register(self.handle_msg)
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def configure(self, subscribers, mobiles):
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# Enable the LU test script in each mobile
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for mobile in mobiles:
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mobile.set_cfg_item('run_lu_test', True)
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self._num_subscribers = len(subscribers)
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self._outstanding = self._num_subscribers
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def handle_msg(self, _data, addr, time):
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data = json.loads(_data.decode())
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if data['type'] == 'event':
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if data['data']['lu_done'] == 1:
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ms = self._results[data['ms']]
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if not has_lu_time(ms):
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self._outstanding = self._outstanding - 1
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set_lu_time(ms, time)
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self.log("MS performed LU ", ms=ms, at=time, lu_delay=lu_delay(ms))
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def has_completed(self):
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return self._outstanding == 0
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def wait_for_test(self, loop, deadline):
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"""Waits up to the absolute deadline for the test to complete."""
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while not self.has_completed():
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now_time = time.clock_gettime(time.CLOCK_MONOTONIC)
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sleep_time = deadline - now_time
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if sleep_time < 0:
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break
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loop.schedule_timeout(sleep_time)
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loop.select()
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def find_min_max(self, results):
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min_value = max_value = None
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for result in results:
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if min_value is None or lu_delay(result) < min_value:
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min_value = lu_delay(result)
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if max_value is None or lu_delay(result) > max_value:
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max_value = lu_delay(result)
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return min_value, max_value
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def get_result_values(self):
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"""
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Returns the raw result values of the test run in any order.
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"""
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return self._results.values()
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def get_stats(self):
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"""
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Returns a statistical summary of the test.
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"""
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attempted = self._num_subscribers
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completed = attempted - self._outstanding
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min_latency, max_latency = self.find_min_max(filter(lambda x: has_lu_time(x), self._results.values()))
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return LUStats(attempted, completed, min_latency, max_latency)
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def print_stats(self):
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stats = self.get_stats()
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all_completed = stats.num_attempted == stats.num_completed
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self.log("Tests done", all_completed=all_completed,
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min=stats.min_latency, max=stats.max_latency)
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def lus_less_than(self, acceptable_delay):
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"""
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Returns LUs that completed within the acceptable delay.
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"""
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res = []
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for result in self._results.values():
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if not has_lu_time(result):
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continue
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if timedelta(seconds=lu_delay(result)) >= acceptable_delay:
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continue
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res.append(result)
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return res
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