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from unittest_helper import BaseTestCase
from flask import request
class MetricsTest(BaseTestCase):
def test_histogram(self):
metrics = self.metrics()
@self.app.route('/test/1')
@metrics.histogram('hist_1', 'Histogram 1')
def test1():
return 'OK'
@self.app.route('/test/2')
@metrics.histogram('hist_2', 'Histogram 2', labels={
'uri': lambda: request.path,
'code': lambda r: r.status_code
})
def test2():
return 'OK'
@self.app.route('/test/<int:x>/<int:y>')
@metrics.histogram('hist_3', 'Histogram 3', labels={
'x_value': lambda: request.view_args['x'],
'y_value': lambda: request.view_args['y']
}, buckets=(0.7, 2.9))
def test3(x, y):
return 'OK: %d/%d' % (x, y)
self.assertMetric('hist_1_count', '0.0')
self.client.get('/test/1')
self.assertMetric('hist_1_count', '1.0')
self.assertMetric('hist_1_bucket', '1.0', ('le', '2.5'))
self.client.get('/test/2')
self.assertMetric(
'hist_2_count', '1.0',
('uri', '/test/2'), ('code', 200)
)
self.assertMetric(
'hist_2_bucket', '1.0',
('le', '1.0'), ('uri', '/test/2'), ('code', 200)
)
self.client.get('/test/3/4')
self.assertMetric(
'hist_3_count', '1.0',
('x_value', '3'), ('y_value', '4')
)
self.assertMetric(
'hist_3_bucket', '1.0',
('le', '0.7'), ('x_value', '3'), ('y_value', '4')
)
def test_summary(self):
metrics = self.metrics()
@self.app.route('/test/1')
@metrics.summary('sum_1', 'Summary 1')
def test1():
return 'OK'
@self.app.route('/test/2')
@metrics.summary('sum_2', 'Summary 2', labels={
'uri': lambda: request.path,
'code': lambda r: r.status_code,
'variant': 2
})
def test2():
return 'OK'
self.assertMetric('sum_1_count', '0.0')
self.client.get('/test/1')
self.assertMetric('sum_1_count', '1.0')
self.client.get('/test/2')
self.assertMetric(
'sum_2_count', '1.0',
('uri', '/test/2'), ('code', 200), ('variant', 2)
)
def test_gauge(self):
metrics = self.metrics()
@self.app.route('/test/1')
@metrics.gauge('gauge_1', 'Gauge 1')
def test1():
self.assertMetric('gauge_1', '1.0')
return 'OK'
@self.app.route('/test/<int:a>')
@metrics.gauge('gauge_2', 'Gauge 2', labels={
'uri': lambda: request.path,
'a_value': lambda: request.view_args['a']
})
def test2(a):
self.assertMetric(
'gauge_2', '1.0',
('uri', '/test/2'), ('a_value', 2)
)
return 'OK: %d' % a
self.assertMetric('gauge_1', '0.0')
self.client.get('/test/1')
self.assertMetric('gauge_1', '0.0')
self.client.get('/test/2')
self.assertMetric(
'gauge_2', '0.0',
('uri', '/test/2'), ('a_value', 2)
)
def test_counter(self):
metrics = self.metrics()
@self.app.route('/test/1')
@metrics.counter('cnt_1', 'Counter 1')
def test1():
return 'OK'
@self.app.route('/test/2')
@metrics.counter('cnt_2', 'Counter 2', labels={
'uri': lambda: request.path,
'code': lambda r: r.status_code
})
def test2():
return 'OK'
self.assertMetric('cnt_1_total', '0.0')
self.client.get('/test/1')
self.assertMetric('cnt_1_total', '1.0')
self.client.get('/test/1')
self.assertMetric('cnt_1_total', '2.0')
self.client.get('/test/1')
self.assertMetric('cnt_1_total', '3.0')
self.client.get('/test/2')
self.assertMetric(
'cnt_2_total', '1.0',
('uri', '/test/2'), ('code', 200)
)
def test_default_format(self):
self.metrics()
@self.app.route('/example')
def test():
return 'OK'
for _ in range(5):
self.client.get('/example')
from prometheus_client.exposition import CONTENT_TYPE_LATEST
response = self.client.get('/metrics')
self.assertEqual(response.status_code, 200)
self.assertEqual(response.content_type, CONTENT_TYPE_LATEST)
self.assertNotIn('# EOF', str(response.data))
self.assertRegex(
str(response.data),
'flask_http_request_duration_seconds_count\\{[^}]+\\} 5.0')
def test_openmetrics_format(self):
self.metrics()
@self.app.route('/example')
def test():
return 'OK'
for _ in range(5):
self.client.get('/example')
from prometheus_client.openmetrics.exposition import CONTENT_TYPE_LATEST
response = self.client.get('/metrics', headers={'Accept': 'application/openmetrics-text'})
self.assertEqual(response.status_code, 200)
self.assertEqual(response.content_type, CONTENT_TYPE_LATEST)
self.assertIn('# EOF', str(response.data))
self.assertRegex(
str(response.data),
'flask_http_request_duration_seconds_count\\{[^}]+\\} 5.0')
|
