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# ============LICENSE_START=======================================================
# Copyright (c) 2017-2018 AT&T Intellectual Property. All rights reserved.
# ================================================================================
# 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.
# ============LICENSE_END=========================================================
#
# ECOMP is a trademark and service mark of AT&T Intellectual Property.
"""test of the step_timer"""
import json
import logging
import sys
import time
from datetime import datetime
from policyhandler.config import Config
from policyhandler.step_timer import StepTimer
Config.load_from_file()
class MockTimer(object):
"""testing step_timer"""
logger = logging.getLogger("policy_handler.unit_test.step_timer")
INIT = "init"
NEXT = "next"
STARTED = "started"
PAUSED = "paused"
STOPPING = "stopping"
STOPPED = "stopped"
def __init__(self, name, interval):
"""step_timer test settings"""
self.name = name or "step_timer"
self.interval = interval or 5
self.step_timer = None
self.status = None
self.run_counter = 0
self.status_ts = datetime.now()
self.exe_ts = None
self.exe_interval = None
self.set_status(MockTimer.INIT)
def __enter__(self):
"""constructor"""
return self
def __exit__(self, exc_type, exc_value, traceback):
"""destructor"""
self.stop_timer()
def on_time(self, *args, **kwargs):
"""timer event"""
self.exe_ts = datetime.now()
self.exe_interval = (self.exe_ts - self.status_ts).total_seconds()
MockTimer.logger.info("run on_time[%s] (%s, %s) in %s for %s",
self.run_counter, json.dumps(args), json.dumps(kwargs),
self.exe_interval, self.get_status())
time.sleep(3)
MockTimer.logger.info("done on_time[%s] (%s, %s) in %s for %s",
self.run_counter, json.dumps(args), json.dumps(kwargs),
self.exe_interval, self.get_status())
def verify_last_event(self):
"""assertions needs to be in the main thread"""
if self.exe_interval is None:
MockTimer.logger.info("not executed: %s", self.get_status())
return
MockTimer.logger.info("verify exe %s for %s", self.exe_interval, self.get_status())
assert self.exe_interval >= self.interval
assert self.exe_interval < 2 * self.interval
MockTimer.logger.info("success %s", self.get_status())
def run_timer(self):
"""create and start the step_timer"""
if self.step_timer:
self.step_timer.next()
self.set_status(MockTimer.NEXT)
return
self.step_timer = StepTimer(
self.name, self.interval, MockTimer.on_time,
MockTimer.logger,
self
)
self.step_timer.start()
self.set_status(MockTimer.STARTED)
def pause_timer(self):
"""pause step_timer"""
if self.step_timer:
self.step_timer.pause()
self.set_status(MockTimer.PAUSED)
def stop_timer(self):
"""stop step_timer"""
if self.step_timer:
self.set_status(MockTimer.STOPPING)
self.step_timer.stop()
self.step_timer.join()
self.step_timer = None
self.set_status(MockTimer.STOPPED)
def set_status(self, status):
"""set the status of the timer"""
if status in [MockTimer.NEXT, MockTimer.STARTED]:
self.run_counter += 1
self.status = status
now = datetime.now()
time_step = (now - self.status_ts).total_seconds()
self.status_ts = now
MockTimer.logger.info("%s: %s", time_step, self.get_status())
def get_status(self):
"""string representation"""
status = "{0}[{1}] {2} in {3} from {4} last exe {5}".format(
self.status, self.run_counter, self.name, self.interval,
str(self.status_ts), str(self.exe_ts)
)
if self.step_timer:
return "{0}: {1}".format(status, self.step_timer.get_status())
return status
def test_step_timer():
"""test step_timer"""
MockTimer.logger.info("============ test_step_timer =========")
with MockTimer("step_timer", 5) as step_timer:
step_timer.run_timer()
time.sleep(1)
step_timer.verify_last_event()
time.sleep(1 + step_timer.interval)
step_timer.verify_last_event()
step_timer.pause_timer()
time.sleep(2)
step_timer.verify_last_event()
step_timer.pause_timer()
time.sleep(2)
step_timer.verify_last_event()
step_timer.run_timer()
time.sleep(3 * step_timer.interval)
step_timer.verify_last_event()
step_timer.run_timer()
time.sleep(3 * step_timer.interval)
step_timer.verify_last_event()
def test_interrupt_step_timer():
"""test step_timer"""
MockTimer.logger.info("============ test_interrupt_step_timer =========")
with MockTimer("step_timer", 5) as step_timer:
step_timer.run_timer()
time.sleep(1)
step_timer.verify_last_event()
step_timer.pause_timer()
time.sleep(2 + step_timer.interval)
step_timer.verify_last_event()
step_timer.pause_timer()
time.sleep(2)
step_timer.verify_last_event()
step_timer.pause_timer()
time.sleep(2)
step_timer.verify_last_event()
step_timer.run_timer()
time.sleep(2)
step_timer.verify_last_event()
step_timer.run_timer()
time.sleep(2 + step_timer.interval)
step_timer.verify_last_event()
step_timer.run_timer()
time.sleep(2)
step_timer.verify_last_event()
step_timer.pause_timer()
time.sleep(2)
step_timer.verify_last_event()
step_timer.run_timer()
time.sleep(2)
step_timer.verify_last_event()
step_timer.run_timer()
time.sleep(3 * step_timer.interval)
step_timer.verify_last_event()
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