def build_schedule_from_maintenance_window(period_str):
"""
Builds a Instance running schedule based on an RDS preferred maintenance windows string in format ddd:hh:mm-ddd:hh:mm
:param period_str: rds maintenance windows string
:return: Instance running schedule with timezone UTC
"""
# get elements of period
start_string, stop_string = period_str.split("-")
start_day_string, start_hhmm_string = start_string.split(":", 1)
stop_day_string, stop_hhmm_string = stop_string.split(":", 1)
# weekday set builder
weekdays_builder = WeekdaySetBuilder()
start_weekday = weekdays_builder.build(start_day_string)
start_time = SchedulerConfigBuilder.get_time_from_string(start_hhmm_string)
end_time = SchedulerConfigBuilder.get_time_from_string(stop_hhmm_string)
# windows with now day overlap, can do with one period for schedule
if start_day_string == stop_day_string:
periods = [
{
"period": RunningPeriod(name=MAINTENANCE_PERIOD_NAME,
begintime=start_time,
endtime=end_time,
weekdays=start_weekday)
}]
else:
# window with day overlap, need two periods for schedule
end_time_day1 = SchedulerConfigBuilder.get_time_from_string("23:59")
begin_time_day2 = SchedulerConfigBuilder.get_time_from_string("00:00")
stop_weekday = weekdays_builder.build(stop_day_string)
periods = [
{
"period": RunningPeriod(name=MAINTENANCE_PERIOD_NAME + "-{}".format(start_day_string),
begintime=start_time,
endtime=end_time_day1,
weekdays=start_weekday),
"instancetype": None
},
{
"period": RunningPeriod(name=MAINTENANCE_PERIOD_NAME + "-{}".format(stop_day_string),
begintime=begin_time_day2,
endtime=end_time,
weekdays=stop_weekday),
"instancetype": None
}]
# create schedule with period(s) and timezone UTC
schedule = InstanceSchedule(name=MAINTENANCE_SCHEDULE_NAME, periods=periods, timezone="UTC", enforced=True)
return schedule
def test_L_wildcard(self):
for year in [2016, 2017]:
for month in range(1, 13):
weekday, days_in_month = calendar.monthrange(year, month)
for tested_on_day in range(1, days_in_month + 1):
builder = WeekdaySetBuilder(year=year,
month=month,
day=tested_on_day)
# test by name of weekday
day_num_l = calendar.day_abbr[weekday] + "L"
tested_by_name = builder.build(day_num_l)
# test by number of weekday
day_value_l = str(weekday) + "L"
tested_by_value = builder.build(day_value_l)
# everything before last week should be empty set
if tested_on_day <= (days_in_month - 7):
self.assertEquals(tested_by_name, set())
self.assertEquals(tested_by_value, set())
else:
# in last week the set should contain the day
self.assertEquals(tested_by_name, {weekday})
self.assertEquals(tested_by_value, {weekday})
# test if ofther weekdays on that day return empty set
for d in range(0, 6):
if d != weekday:
day_num_l = calendar.day_abbr[d] + "L"
day_value_l = str(d) + "L"
self.assertEquals(builder.build(day_num_l),
set())
self.assertEqual(builder.build(day_value_l),
set())
weekday = (weekday + 1) % 7
def test_weekday_numbered(self):
for year in [2016, 2017]:
for month in range(1, 13):
weekday, days_in_month = calendar.monthrange(year, month)
for day in range(1, days_in_month + 1):
num = int((day - 1) / 7) + 1
builder = WeekdaySetBuilder(year=year,
month=month,
day=day)
tested_by_name = builder.build(calendar.day_abbr[weekday] +
"#" + str(num))
self.assertEquals(tested_by_name, {weekday})
tested_by_value = builder.build(
str(weekday) + "#" + str(num))
self.assertEquals(tested_by_value, {weekday})
for other_weekday in range(0, 7):
if other_weekday != weekday:
tested_by_name = builder.build(
calendar.day_abbr[other_weekday] + "#" +
str(num))
self.assertEquals(tested_by_name, set())
tested_by_value = builder.build(
str(other_weekday) + "#" + str(num))
self.assertEquals(tested_by_value, set())
for other_num in range(1, 6):
if num != other_num:
tested_by_name = builder.build(
calendar.day_abbr[weekday] + "#" +
str(other_num))
self.assertEquals(tested_by_name, set())
tested_by_value = builder.build(
str(weekday) + "#" + str(other_num))
self.assertEquals(tested_by_value, set())
weekday = (weekday + 1) % 7
def _validate_period(self, **period):
result = {}
def is_valid_time(s):
return re.match(ConfigAdmin.TIME_REGEX, s) is not None
# allowed and validated parameters
valid_parameters = [
configuration.BEGINTIME, configuration.ENDTIME,
configuration.WEEKDAYS, configuration.MONTHDAYS,
configuration.MONTHS, configuration.NAME, configuration.DESCRIPTION
]
for attr in period:
# indicates type for config entry
if attr == ConfigAdmin.TYPE_ATTR:
continue
# parameter is allowed?
if attr not in valid_parameters:
raise ValueError(
ERR_PERIOD_UNKNOWN_PARAMETER.format(
attr, str(valid_parameters)))
# remove None values
if period[attr] is None or len(str(period[attr])) == 0:
continue
# period name
if attr == configuration.NAME:
result[attr] = period[attr]
continue
# description
if attr == configuration.DESCRIPTION:
result[attr] = period[attr]
continue
# validate start and end types times
if attr in [configuration.BEGINTIME, configuration.ENDTIME]:
time_str = period[attr]
if not is_valid_time(time_str):
raise ValueError(
ERR_PERIOD_INVALID_TIME.format(attr, time_str))
result[attr] = str(
datetime.strptime(time_str,
configuration.TIME_FORMAT_STRING).time()
)[0:len(configuration.TIME_FORMAT_STRING)]
if configuration.BEGINTIME in result and configuration.ENDTIME in result:
begintime = datetime.strptime(
result[configuration.BEGINTIME],
configuration.TIME_FORMAT_STRING).time()
endtime = datetime.strptime(
result[configuration.ENDTIME],
configuration.TIME_FORMAT_STRING).time()
if begintime > endtime:
raise ValueError(
ERR_PERIOD_BEGIN_LATER_THAN_END.format(
result[configuration.BEGINTIME],
result[configuration.ENDTIME]))
continue
# check weekdays, monthdays and month sets
if attr in [
configuration.WEEKDAYS, configuration.MONTHDAYS,
configuration.MONTHS
]:
temp = self._ensure_set(period[attr])
if len(temp) == 0:
continue
# validate month
if attr == configuration.MONTHS:
# noinspection PyPep8
try:
MonthSetBuilder().build(temp)
result[attr] = temp
continue
except:
raise ValueError(
ERR_PERIOD_INVALID_MONTHS.format(str(
period[attr])))
# validate weekdays
if attr == configuration.WEEKDAYS:
try:
wdb = WeekdaySetBuilder(year=2016, month=12, day=31)
wdb.build(temp)
result[attr] = temp
continue
except Exception as ex:
raise ValueError(
ERR_PERIOD_INVALID_WEEKDAYS.format(
str(period[attr]), ex))
# validate monthdays
if attr == configuration.MONTHDAYS:
# noinspection PyPep8
try:
MonthdaySetBuilder(year=2016, month=12).build(temp)
result[attr] = temp
continue
except:
raise ValueError(
ERR_PERIOD_INVALID_MONTHDAYS.format(
str(period[attr])))
if configuration.NAME not in result:
raise ValueError(ERR_NAME_PARAM_MISSING)
for condition in [
configuration.BEGINTIME, configuration.ENDTIME,
configuration.WEEKDAYS, configuration.MONTHS,
configuration.MONTHDAYS
]:
if condition in result:
break
else:
raise ValueError(ERR_NO_PERIODS)
result[ConfigAdmin.TYPE_ATTR] = configuration.PERIOD
return result