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from __future__ import unicode_literals
import inspect
import os
import threading
import time
import unittest
from prometheus_client.core import *
class TestCounter(unittest.TestCase):
def setUp(self):
self.registry = CollectorRegistry()
self.counter = Counter('c', 'help', registry=self.registry)
def test_increment(self):
self.assertEqual(0, self.registry.get_sample_value('c'))
self.counter.inc()
self.assertEqual(1, self.registry.get_sample_value('c'))
self.counter.inc(7)
self.assertEqual(8, self.registry.get_sample_value('c'))
def test_negative_increment_raises(self):
self.assertRaises(ValueError, self.counter.inc, -1)
def test_function_decorator(self):
@self.counter.count_exceptions(ValueError)
def f(r):
if r:
raise ValueError
else:
raise TypeError
self.assertEqual((["r"], None, None, None), inspect.getargspec(f))
try:
f(False)
except TypeError:
pass
self.assertEqual(0, self.registry.get_sample_value('c'))
try:
f(True)
except ValueError:
raised = True
self.assertEqual(1, self.registry.get_sample_value('c'))
def test_block_decorator(self):
with self.counter.count_exceptions():
pass
self.assertEqual(0, self.registry.get_sample_value('c'))
raised = False
try:
with self.counter.count_exceptions():
raise ValueError
except:
raised = True
self.assertTrue(raised)
self.assertEqual(1, self.registry.get_sample_value('c'))
class TestGauge(unittest.TestCase):
def setUp(self):
self.registry = CollectorRegistry()
self.gauge = Gauge('g', 'help', registry=self.registry)
def test_gauge(self):
self.assertEqual(0, self.registry.get_sample_value('g'))
self.gauge.inc()
self.assertEqual(1, self.registry.get_sample_value('g'))
self.gauge.dec(3)
self.assertEqual(-2, self.registry.get_sample_value('g'))
self.gauge.set(9)
self.assertEqual(9, self.registry.get_sample_value('g'))
def test_function_decorator(self):
self.assertEqual(0, self.registry.get_sample_value('g'))
@self.gauge.track_inprogress()
def f():
self.assertEqual(1, self.registry.get_sample_value('g'))
self.assertEqual(([], None, None, None), inspect.getargspec(f))
f()
self.assertEqual(0, self.registry.get_sample_value('g'))
def test_block_decorator(self):
self.assertEqual(0, self.registry.get_sample_value('g'))
with self.gauge.track_inprogress():
self.assertEqual(1, self.registry.get_sample_value('g'))
self.assertEqual(0, self.registry.get_sample_value('g'))
def test_gauge_function(self):
x = {}
self.gauge.set_function(lambda: len(x))
self.assertEqual(0, self.registry.get_sample_value('g'))
self.gauge.inc()
self.assertEqual(0, self.registry.get_sample_value('g'))
x['a'] = None
self.assertEqual(1, self.registry.get_sample_value('g'))
def test_function_decorator(self):
self.assertEqual(0, self.registry.get_sample_value('g'))
@self.gauge.time()
def f():
time.sleep(.001)
self.assertEqual(([], None, None, None), inspect.getargspec(f))
f()
self.assertNotEqual(0, self.registry.get_sample_value('g'))
def test_block_decorator(self):
self.assertEqual(0, self.registry.get_sample_value('g'))
with self.gauge.time():
time.sleep(.001)
self.assertNotEqual(0, self.registry.get_sample_value('g'))
class TestSummary(unittest.TestCase):
def setUp(self):
self.registry = CollectorRegistry()
self.summary = Summary('s', 'help', registry=self.registry)
def test_summary(self):
self.assertEqual(0, self.registry.get_sample_value('s_count'))
self.assertEqual(0, self.registry.get_sample_value('s_sum'))
self.summary.observe(10)
self.assertEqual(1, self.registry.get_sample_value('s_count'))
self.assertEqual(10, self.registry.get_sample_value('s_sum'))
def test_function_decorator(self):
self.assertEqual(0, self.registry.get_sample_value('s_count'))
@self.summary.time()
def f():
pass
self.assertEqual(([], None, None, None), inspect.getargspec(f))
f()
self.assertEqual(1, self.registry.get_sample_value('s_count'))
def test_block_decorator(self):
self.assertEqual(0, self.registry.get_sample_value('s_count'))
with self.summary.time():
pass
self.assertEqual(1, self.registry.get_sample_value('s_count'))
class TestHistogram(unittest.TestCase):
def setUp(self):
self.registry = CollectorRegistry()
self.histogram = Histogram('h', 'help', registry=self.registry)
self.labels = Histogram('hl', 'help', ['l'], registry=self.registry)
def test_histogram(self):
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '1.0'}))
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '2.5'}))
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '5.0'}))
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
self.assertEqual(0, self.registry.get_sample_value('h_count'))
self.assertEqual(0, self.registry.get_sample_value('h_sum'))
self.histogram.observe(2)
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '1.0'}))
self.assertEqual(1, self.registry.get_sample_value('h_bucket', {'le': '2.5'}))
self.assertEqual(1, self.registry.get_sample_value('h_bucket', {'le': '5.0'}))
self.assertEqual(1, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
self.assertEqual(1, self.registry.get_sample_value('h_count'))
self.assertEqual(2, self.registry.get_sample_value('h_sum'))
self.histogram.observe(2.5)
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '1.0'}))
self.assertEqual(2, self.registry.get_sample_value('h_bucket', {'le': '2.5'}))
self.assertEqual(2, self.registry.get_sample_value('h_bucket', {'le': '5.0'}))
self.assertEqual(2, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
self.assertEqual(2, self.registry.get_sample_value('h_count'))
self.assertEqual(4.5, self.registry.get_sample_value('h_sum'))
self.histogram.observe(float("inf"))
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '1.0'}))
self.assertEqual(2, self.registry.get_sample_value('h_bucket', {'le': '2.5'}))
self.assertEqual(2, self.registry.get_sample_value('h_bucket', {'le': '5.0'}))
self.assertEqual(3, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
self.assertEqual(3, self.registry.get_sample_value('h_count'))
self.assertEqual(float("inf"), self.registry.get_sample_value('h_sum'))
def test_setting_buckets(self):
h = Histogram('h', 'help', registry=None, buckets=[0, 1, 2])
self.assertEqual([0.0, 1.0, 2.0, float("inf")], h._upper_bounds)
h = Histogram('h', 'help', registry=None, buckets=[0, 1, 2, float("inf")])
self.assertEqual([0.0, 1.0, 2.0, float("inf")], h._upper_bounds)
self.assertRaises(ValueError, Histogram, 'h', 'help', registry=None, buckets=[])
self.assertRaises(ValueError, Histogram, 'h', 'help', registry=None, buckets=[float("inf")])
self.assertRaises(ValueError, Histogram, 'h', 'help', registry=None, buckets=[3, 1])
def test_labels(self):
self.labels.labels('a').observe(2)
self.assertEqual(0, self.registry.get_sample_value('hl_bucket', {'le': '1.0', 'l': 'a'}))
self.assertEqual(1, self.registry.get_sample_value('hl_bucket', {'le': '2.5', 'l': 'a'}))
self.assertEqual(1, self.registry.get_sample_value('hl_bucket', {'le': '5.0', 'l': 'a'}))
self.assertEqual(1, self.registry.get_sample_value('hl_bucket', {'le': '+Inf', 'l': 'a'}))
self.assertEqual(1, self.registry.get_sample_value('hl_count', {'l': 'a'}))
self.assertEqual(2, self.registry.get_sample_value('hl_sum', {'l': 'a'}))
def test_function_decorator(self):
self.assertEqual(0, self.registry.get_sample_value('h_count'))
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
@self.histogram.time()
def f():
pass
self.assertEqual(([], None, None, None), inspect.getargspec(f))
f()
self.assertEqual(1, self.registry.get_sample_value('h_count'))
self.assertEqual(1, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
def test_block_decorator(self):
self.assertEqual(0, self.registry.get_sample_value('h_count'))
self.assertEqual(0, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
with self.histogram.time():
pass
self.assertEqual(1, self.registry.get_sample_value('h_count'))
self.assertEqual(1, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
class TestMetricWrapper(unittest.TestCase):
def setUp(self):
self.registry = CollectorRegistry()
self.counter = Counter('c', 'help', labelnames=['l'], registry=self.registry)
self.two_labels = Counter('two', 'help', labelnames=['a', 'b'], registry=self.registry)
def test_child(self):
self.counter.labels('x').inc()
self.assertEqual(1, self.registry.get_sample_value('c', {'l': 'x'}))
self.two_labels.labels('x', 'y').inc(2)
self.assertEqual(2, self.registry.get_sample_value('two', {'a': 'x', 'b': 'y'}))
def test_remove(self):
self.counter.labels('x').inc()
self.counter.labels('y').inc(2)
self.assertEqual(1, self.registry.get_sample_value('c', {'l': 'x'}))
self.assertEqual(2, self.registry.get_sample_value('c', {'l': 'y'}))
self.counter.remove('x')
self.assertEqual(None, self.registry.get_sample_value('c', {'l': 'x'}))
self.assertEqual(2, self.registry.get_sample_value('c', {'l': 'y'}))
def test_incorrect_label_count_raises(self):
self.assertRaises(ValueError, self.counter.labels)
self.assertRaises(ValueError, self.counter.labels, 'a', 'b')
self.assertRaises(ValueError, self.counter.remove)
self.assertRaises(ValueError, self.counter.remove, 'a', 'b')
def test_labels_coerced_to_string(self):
self.counter.labels(None).inc()
self.counter.labels(l=None).inc()
self.assertEqual(2, self.registry.get_sample_value('c', {'l': 'None'}))
self.counter.remove(None)
self.assertEqual(None, self.registry.get_sample_value('c', {'l': 'None'}))
def test_non_string_labels_raises(self):
class Test(object):
__str__ = None
self.assertRaises(TypeError, self.counter.labels, Test())
self.assertRaises(TypeError, self.counter.labels, l=Test())
def test_namespace_subsystem_concatenated(self):
c = Counter('c', 'help', namespace='a', subsystem='b', registry=self.registry)
c.inc()
self.assertEqual(1, self.registry.get_sample_value('a_b_c'))
def test_labels_by_kwarg(self):
self.counter.labels(l='x').inc()
self.assertEqual(1, self.registry.get_sample_value('c', {'l': 'x'}))
self.assertRaises(ValueError, self.counter.labels, l='x', m='y')
self.assertRaises(ValueError, self.counter.labels, m='y')
self.assertRaises(ValueError, self.counter.labels)
self.two_labels.labels(a='x', b='y').inc()
self.assertEqual(1, self.registry.get_sample_value('two', {'a': 'x', 'b': 'y'}))
self.assertRaises(ValueError, self.two_labels.labels, a='x', b='y', c='z')
self.assertRaises(ValueError, self.two_labels.labels, a='x', c='z')
self.assertRaises(ValueError, self.two_labels.labels, b='y', c='z')
self.assertRaises(ValueError, self.two_labels.labels, c='z')
self.assertRaises(ValueError, self.two_labels.labels)
self.assertRaises(ValueError, self.two_labels.labels, {'a': 'x'}, b='y')
def test_invalid_names_raise(self):
self.assertRaises(ValueError, Counter, '', 'help')
self.assertRaises(ValueError, Counter, '^', 'help')
self.assertRaises(ValueError, Counter, '', 'help', namespace='&')
self.assertRaises(ValueError, Counter, '', 'help', subsystem='(')
self.assertRaises(ValueError, Counter, 'c', '', labelnames=['^'])
self.assertRaises(ValueError, Counter, 'c', '', labelnames=['a:b'])
self.assertRaises(ValueError, Counter, 'c', '', labelnames=['__reserved'])
self.assertRaises(ValueError, Summary, 'c', '', labelnames=['quantile'])
def test_empty_labels_list(self):
h = Histogram('h', 'help', [], registry=self.registry)
self.assertEqual(0, self.registry.get_sample_value('h_sum'))
def test_wrapped_original_class(self):
self.assertEqual(Counter.__wrapped__, Counter('foo', 'bar').__class__)
class TestMetricFamilies(unittest.TestCase):
def setUp(self):
self.registry = CollectorRegistry()
def custom_collector(self, metric_family):
class CustomCollector(object):
def collect(self):
return [metric_family]
self.registry.register(CustomCollector())
def test_untyped(self):
self.custom_collector(UntypedMetricFamily('u', 'help', value=1))
self.assertEqual(1, self.registry.get_sample_value('u', {}))
def test_untyped_labels(self):
cmf = UntypedMetricFamily('u', 'help', labels=['a', 'c'])
cmf.add_metric(['b', 'd'], 2)
self.custom_collector(cmf)
self.assertEqual(2, self.registry.get_sample_value('u', {'a': 'b', 'c': 'd'}))
def test_counter(self):
self.custom_collector(CounterMetricFamily('c', 'help', value=1))
self.assertEqual(1, self.registry.get_sample_value('c', {}))
def test_counter_labels(self):
cmf = CounterMetricFamily('c', 'help', labels=['a', 'c'])
cmf.add_metric(['b', 'd'], 2)
self.custom_collector(cmf)
self.assertEqual(2, self.registry.get_sample_value('c', {'a': 'b', 'c': 'd'}))
def test_gauge(self):
self.custom_collector(GaugeMetricFamily('g', 'help', value=1))
self.assertEqual(1, self.registry.get_sample_value('g', {}))
def test_gauge_labels(self):
cmf = GaugeMetricFamily('g', 'help', labels=['a'])
cmf.add_metric(['b'], 2)
self.custom_collector(cmf)
self.assertEqual(2, self.registry.get_sample_value('g', {'a':'b'}))
def test_summary(self):
self.custom_collector(SummaryMetricFamily('s', 'help', count_value=1, sum_value=2))
self.assertEqual(1, self.registry.get_sample_value('s_count', {}))
self.assertEqual(2, self.registry.get_sample_value('s_sum', {}))
def test_summary_labels(self):
cmf = SummaryMetricFamily('s', 'help', labels=['a'])
cmf.add_metric(['b'], count_value=1, sum_value=2)
self.custom_collector(cmf)
self.assertEqual(1, self.registry.get_sample_value('s_count', {'a': 'b'}))
self.assertEqual(2, self.registry.get_sample_value('s_sum', {'a': 'b'}))
def test_histogram(self):
self.custom_collector(HistogramMetricFamily('h', 'help', buckets=[('0', 1), ('+Inf', 2)], sum_value=3))
self.assertEqual(1, self.registry.get_sample_value('h_bucket', {'le': '0'}))
self.assertEqual(2, self.registry.get_sample_value('h_bucket', {'le': '+Inf'}))
self.assertEqual(2, self.registry.get_sample_value('h_count', {}))
self.assertEqual(3, self.registry.get_sample_value('h_sum', {}))
def test_histogram_labels(self):
cmf = HistogramMetricFamily('h', 'help', labels=['a'])
cmf.add_metric(['b'], buckets=[('0', 1), ('+Inf', 2)], sum_value=3)
self.custom_collector(cmf)
self.assertEqual(1, self.registry.get_sample_value('h_bucket', {'a': 'b', 'le': '0'}))
self.assertEqual(2, self.registry.get_sample_value('h_bucket', {'a': 'b', 'le': '+Inf'}))
self.assertEqual(2, self.registry.get_sample_value('h_count', {'a': 'b'}))
self.assertEqual(3, self.registry.get_sample_value('h_sum', {'a': 'b'}))
def test_bad_constructors(self):
self.assertRaises(ValueError, UntypedMetricFamily, 'u', 'help', value=1, labels=[])
self.assertRaises(ValueError, UntypedMetricFamily, 'u', 'help', value=1, labels=['a'])
self.assertRaises(ValueError, CounterMetricFamily, 'c', 'help', value=1, labels=[])
self.assertRaises(ValueError, CounterMetricFamily, 'c', 'help', value=1, labels=['a'])
self.assertRaises(ValueError, GaugeMetricFamily, 'g', 'help', value=1, labels=[])
self.assertRaises(ValueError, GaugeMetricFamily, 'g', 'help', value=1, labels=['a'])
self.assertRaises(ValueError, SummaryMetricFamily, 's', 'help', sum_value=1)
self.assertRaises(ValueError, SummaryMetricFamily, 's', 'help', count_value=1)
self.assertRaises(ValueError, SummaryMetricFamily, 's', 'help', count_value=1, labels=['a'])
self.assertRaises(ValueError, SummaryMetricFamily, 's', 'help', sum_value=1, labels=['a'])
self.assertRaises(ValueError, SummaryMetricFamily, 's', 'help', count_value=1, sum_value=1, labels=['a'])
self.assertRaises(ValueError, HistogramMetricFamily, 'h', 'help', sum_value=1)
self.assertRaises(ValueError, HistogramMetricFamily, 'h', 'help', buckets={})
self.assertRaises(ValueError, HistogramMetricFamily, 'h', 'help', sum_value=1, labels=['a'])
self.assertRaises(ValueError, HistogramMetricFamily, 'h', 'help', buckets={}, labels=['a'])
self.assertRaises(ValueError, HistogramMetricFamily, 'h', 'help', buckets={}, sum_value=1, labels=['a'])
self.assertRaises(KeyError, HistogramMetricFamily, 'h', 'help', buckets={}, sum_value=1)
def test_labelnames(self):
cmf = UntypedMetricFamily('u', 'help', labels=iter(['a']))
self.assertEqual(('a',), cmf._labelnames)
cmf = CounterMetricFamily('c', 'help', labels=iter(['a']))
self.assertEqual(('a',), cmf._labelnames)
gmf = GaugeMetricFamily('g', 'help', labels=iter(['a']))
self.assertEqual(('a',), gmf._labelnames)
smf = SummaryMetricFamily('s', 'help', labels=iter(['a']))
self.assertEqual(('a',), smf._labelnames)
hmf = HistogramMetricFamily('h', 'help', labels=iter(['a']))
self.assertEqual(('a',), hmf._labelnames)
class TestCollectorRegistry(unittest.TestCase):
def test_duplicate_metrics_raises(self):
registry = CollectorRegistry()
Counter('c', 'help', registry=registry)
self.assertRaises(ValueError, Counter, 'c', 'help', registry=registry)
self.assertRaises(ValueError, Gauge, 'c', 'help', registry=registry)
Gauge('g', 'help', registry=registry)
self.assertRaises(ValueError, Gauge, 'g', 'help', registry=registry)
self.assertRaises(ValueError, Counter, 'g', 'help', registry=registry)
Summary('s', 'help', registry=registry)
self.assertRaises(ValueError, Summary, 's', 'help', registry=registry)
# We don't currently expose quantiles, but let's prevent future
# clashes anyway.
self.assertRaises(ValueError, Gauge, 's', 'help', registry=registry)
Histogram('h', 'help', registry=registry)
self.assertRaises(ValueError, Histogram, 'h', 'help', registry=registry)
# Clashes aggaint various suffixes.
self.assertRaises(ValueError, Summary, 'h', 'help', registry=registry)
self.assertRaises(ValueError, Counter, 'h_count', 'help', registry=registry)
self.assertRaises(ValueError, Counter, 'h_sum', 'help', registry=registry)
self.assertRaises(ValueError, Counter, 'h_bucket', 'help', registry=registry)
# The name of the histogram itself isn't taken.
Counter('h', 'help', registry=registry)
def test_unregister_works(self):
registry = CollectorRegistry()
s = Summary('s', 'help', registry=registry)
self.assertRaises(ValueError, Counter, 's_count', 'help', registry=registry)
registry.unregister(s)
Counter('s_count', 'help', registry=registry)
def custom_collector(self, metric_family, registry):
class CustomCollector(object):
def collect(self):
return [metric_family]
registry.register(CustomCollector())
def test_autodescribe_disabled_by_default(self):
registry = CollectorRegistry()
self.custom_collector(CounterMetricFamily('c', 'help', value=1), registry)
self.custom_collector(CounterMetricFamily('c', 'help', value=1), registry)
registry = CollectorRegistry(auto_describe=True)
self.custom_collector(CounterMetricFamily('c', 'help', value=1), registry)
self.assertRaises(ValueError, self.custom_collector, CounterMetricFamily('c', 'help', value=1), registry)
def test_restricted_registry(self):
registry = CollectorRegistry()
Counter('c', 'help', registry=registry)
Summary('s', 'help', registry=registry).observe(7)
m = Metric('s', 'help', 'summary')
m.samples = [('s_sum', {}, 7)]
self.assertEquals([m], registry.restricted_registry(['s_sum']).collect())
if __name__ == '__main__':
unittest.main()
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