def test_get_initial_sleep_delay_jitter_disabled(self):
logger = mock.Mock()
# 1. Default value is used
monitor_config = MonitorConfig(
{"module": "test_module"}, monitor_module="test_monitor"
)
global_config = mock.Mock()
global_config.global_monitor_sample_interval_enable_jitter = False
monitor = ScalyrMonitor(
monitor_config=monitor_config,
logger=logger,
sample_interval_secs=None,
global_config=global_config,
)
sleep_delay = monitor._get_initial_sleep_delay()
self.assertEqual(sleep_delay, 0)
# 2. Value is overridden on per monitor basis
monitor_config = MonitorConfig(
{"module": "test_module", "sample_interval": 10},
monitor_module="test_monitor",
)
global_config = mock.Mock()
global_config.global_monitor_sample_interval_enable_jitter = False
monitor = ScalyrMonitor(
monitor_config=monitor_config,
logger=logger,
sample_interval_secs=None,
global_config=global_config,
)
sleep_delay = monitor._get_initial_sleep_delay()
self.assertEqual(sleep_delay, 0)
def test_get_initial_sleep_delay_with_random_jitter_enabled(self):
logger = mock.Mock()
# 1. Default value is used
monitor_sample_interval = ScalyrMonitor.DEFAULT_SAMPLE_INTERVAL_SECS
monitor_config = MonitorConfig(
{"module": "test_module"}, monitor_module="test_monitor"
)
global_config = mock.Mock()
global_config.global_monitor_sample_interval_enable_jitter = True
monitor = ScalyrMonitor(
monitor_config=monitor_config,
logger=logger,
sample_interval_secs=None,
global_config=global_config,
)
for i in range(0, 100):
sleep_delay = monitor._get_initial_sleep_delay()
min_jitter = round(monitor_sample_interval / 10) * 2
max_jitter = round(monitor_sample_interval / 10) * 8
self.assertFalse(sleep_delay == monitor_sample_interval)
self.assertTrue(sleep_delay >= min_jitter and sleep_delay <= max_jitter)
# 2. Value is overridden on per monitor basis
monitor_sample_interval = 10
monitor_config = MonitorConfig(
{"module": "test_module", "sample_interval": 10},
monitor_module="test_monitor",
)
global_config = mock.Mock()
global_config.global_monitor_sample_interval_enable_jitter = True
monitor = ScalyrMonitor(
monitor_config=monitor_config,
logger=logger,
sample_interval_secs=None,
global_config=global_config,
)
for i in range(0, 100):
sleep_delay = monitor._get_initial_sleep_delay()
min_jitter = round(monitor_sample_interval / 10) * 2
max_jitter = round(monitor_sample_interval / 10) * 8
self.assertFalse(sleep_delay == monitor_sample_interval)
self.assertTrue(sleep_delay >= min_jitter and sleep_delay <= max_jitter)
# 3. Verify there is an upper bound of 40 seconds
monitor_sample_interval = 1000
monitor_config = MonitorConfig(
{"module": "test_module", "sample_interval": 1000},
monitor_module="test_monitor",
)
global_config = mock.Mock()
global_config.global_monitor_sample_interval_enable_jitter = True
monitor = ScalyrMonitor(
monitor_config=monitor_config,
logger=logger,
sample_interval_secs=None,
global_config=global_config,
)
for i in range(0, 100):
sleep_delay = monitor._get_initial_sleep_delay()
min_jitter = MIN_INITIAL_GATHER_SAMPLE_SLEEP_SECS
max_jitter = MAX_INITIAL_GATHER_SAMPLE_SLEEP_SECS
self.assertTrue(sleep_delay >= min_jitter and sleep_delay <= max_jitter)