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[monitoring] fix: use the same random value for retry #3900

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merged 3 commits into from
May 28, 2020
Merged

[monitoring] fix: use the same random value for retry #3900

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1f7b17b
[monitoring] fix: use the same random value for retry
May 28, 2020
e12e7c7
Just reseed in `write_value()`
May 28, 2020
24c166a
revert comment
May 28, 2020
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7 changes: 7 additions & 0 deletions monitoring/api/v3/api-client/custom_metric.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
# [START all]
import argparse
import datetime
import os
import pprint
import random
import time
Expand Down Expand Up @@ -103,6 +104,12 @@ def get_custom_data_point():
"""Dummy method to return a mock measurement for demonstration purposes.
Returns a random number between 0 and 10"""
length = random.randint(0, 10)
# [END all]
# Just in case, terminate the region tag.
# If there's an envvar "MONITORING_TEST_REPORT_VALUE" is set, use it.
if 'MONITORING_TEST_REPORT_VALUE' in os.environ:
length = int(os.environ.get('MONITORING_TEST_REPORT_VALUE'))
# [START all]
print("reporting timeseries value {}".format(str(length)))
return length

Expand Down
9 changes: 3 additions & 6 deletions monitoring/api/v3/api-client/custom_metric_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -80,11 +80,8 @@ def custom_metric(client):


def test_custom_metric(client, custom_metric):
# Use a constant seed so psuedo random number is known ahead of time
random.seed(1)
pseudo_random_value = random.randint(0, 10)
# Reseed it
random.seed(1)
os.environ['MONITORING_TEST_REPORT_VALUE'] = str(pseudo_random_value)

INSTANCE_ID = "test_instance"

Expand All @@ -107,7 +104,7 @@ def eventually_consistent_test():
assert 'timeSeries' in response
value = int(
response['timeSeries'][0]['points'][0]['value']['int64Value'])
# using seed of 1 will create a value of 1
assert value == pseudo_random_value
# We override the report value with MONITORING_TEST_REPORT_VALUE env var
assert pseudo_random_value == value

eventually_consistent_test()