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import unittest
import time
from urllib3 import HTTPResponse
from urllib3.exceptions import MaxRetryError
from influxdb_client.client.write.retry import WritesRetry
class NonRandomMinWritesRetry(WritesRetry):
def _random(self):
return 0
class NonRandomMaxWritesRetry(WritesRetry):
def _random(self):
return 1
class TestWritesRetry(unittest.TestCase):
def test_copy(self):
retry = WritesRetry(exponential_base=3, max_retry_delay=145, total=10)
self.assertEqual(retry.max_retry_delay, 145)
self.assertEqual(retry.exponential_base, 3)
self.assertEqual(retry.total, 10)
retry = retry.increment()
self.assertEqual(retry.max_retry_delay, 145)
self.assertEqual(retry.exponential_base, 3)
self.assertEqual(retry.total, 9)
retry = retry.increment()
self.assertEqual(retry.max_retry_delay, 145)
self.assertEqual(retry.exponential_base, 3)
self.assertEqual(retry.total, 8)
def test_backoff_max_time(self):
retry = NonRandomMinWritesRetry(max_retry_time=2)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 0)
retry = retry.increment()
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 5)
retry = retry.increment()
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 10)
time.sleep(3)
with self.assertRaises(MaxRetryError) as cm:
retry.increment()
exception = cm.exception
self.assertEqual("max_retry_time exceeded", exception.reason.args[0])
def test_backoff_start_range(self):
retry = NonRandomMinWritesRetry(total=5, retry_interval=1, exponential_base=2,
max_retry_delay=550)
self.assertEqual(retry.total, 5)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 0)
retry = retry.increment()
self.assertEqual(retry.total, 4)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 1)
retry = retry.increment()
self.assertEqual(retry.total, 3)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 2)
retry = retry.increment()
self.assertEqual(retry.total, 2)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 4)
retry = retry.increment()
self.assertEqual(retry.total, 1)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 8)
retry = retry.increment()
self.assertEqual(retry.total, 0)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 16)
with self.assertRaises(MaxRetryError) as cm:
retry.increment()
exception = cm.exception
self.assertEqual("too many error responses", exception.reason.args[0])
def test_backoff_stop_range(self):
retry = NonRandomMaxWritesRetry(total=5, retry_interval=5, exponential_base=2,
max_retry_delay=550)
self.assertEqual(retry.total, 5)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 0)
retry = retry.increment()
self.assertEqual(retry.total, 4)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 10)
retry = retry.increment()
self.assertEqual(retry.total, 3)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 20)
retry = retry.increment()
self.assertEqual(retry.total, 2)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 40)
retry = retry.increment()
self.assertEqual(retry.total, 1)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 80)
retry = retry.increment()
self.assertEqual(retry.total, 0)
self.assertEqual(retry.is_exhausted(), False)
self.assertEqual(retry.get_backoff_time(), 160)
with self.assertRaises(MaxRetryError) as cm:
retry.increment()
exception = cm.exception
self.assertEqual("too many error responses", exception.reason.args[0])
def test_backoff_max(self):
retry = WritesRetry(total=5, retry_interval=1, max_retry_delay=15) \
.increment() \
.increment() \
.increment() \
.increment() \
.increment()
self.assertLessEqual(retry.get_backoff_time(), 15)
def test_backoff_increment(self):
retry = WritesRetry(total=5, retry_interval=4).increment()
self.assertEqual(retry.total, 4)
self.assertEqual(retry.is_exhausted(), False)
backoff_time = retry.get_backoff_time()
self.assertGreater(backoff_time, 4)
self.assertLessEqual(backoff_time, 8)
def test_backoff_exponential_base(self):
retry = NonRandomMinWritesRetry(total=5, retry_interval=2, exponential_base=2)
retry = retry.increment()
self.assertEqual(retry.get_backoff_time(), 2)
retry = retry.increment()
self.assertEqual(retry.get_backoff_time(), 4)
retry = retry.increment()
self.assertEqual(retry.get_backoff_time(), 8)
retry = retry.increment()
self.assertEqual(retry.get_backoff_time(), 16)
def test_get_retry_after(self):
response = HTTPResponse()
response.headers.add('Retry-After', '5')
retry = WritesRetry()
self.assertEqual(retry.get_retry_after(response), 5)
def test_get_retry_after_jitter(self):
response = HTTPResponse()
response.headers.add('Retry-After', '5')
retry = WritesRetry(jitter_interval=2)
retry_after = retry.get_retry_after(response)
self.assertGreater(retry_after, 5)
self.assertLessEqual(retry_after, 7)
def test_is_retry(self):
retry = WritesRetry(allowed_methods=["POST"])
self.assertTrue(retry.is_retry("POST", 429, True))
def test_is_retry_428(self):
retry = WritesRetry(allowed_methods=["POST"])
self.assertFalse(retry.is_retry("POST", 428, True))
def test_is_retry_430(self):
retry = WritesRetry(allowed_methods=["POST"])
self.assertTrue(retry.is_retry("POST", 430, True))
def test_is_retry_retry_after_header_is_not_required(self):
retry = WritesRetry(allowed_methods=["POST"])
self.assertTrue(retry.is_retry("POST", 429, False))
def test_is_retry_respect_method(self):
retry = WritesRetry(allowed_methods=["POST"])
self.assertFalse(retry.is_retry("GET", 429, False))
def test_logging(self):
response = HTTPResponse(
body='{"code":"too many requests","message":"org 04014de4ed590000 has exceeded limited_write plan limit"}')
response.headers.add('Retry-After', '63')
with self.assertLogs('influxdb_client.client.write.retry', level='WARNING') as cm:
WritesRetry(total=5, retry_interval=1, max_retry_delay=15) \
.increment(response=response) \
.increment(error=Exception("too many requests")) \
.increment(url='http://localhost:9999')
self.assertEqual("WARNING:influxdb_client.client.write.retry:The retriable error occurred during request. "
"Reason: 'org 04014de4ed590000 has exceeded limited_write plan limit'. Retry in 63s.",
cm.output[0])
self.assertEqual("WARNING:influxdb_client.client.write.retry:The retriable error occurred during request. "
"Reason: 'too many requests'.",
cm.output[1])
self.assertEqual("WARNING:influxdb_client.client.write.retry:The retriable error occurred during request. "
"Reason: 'Failed request to: http://localhost:9999'.",
cm.output[2])
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