def test_record_call_latency_sync(self):
definitions = [
MetricDefinition("Histogram", "histo", "An histogram",
["foo", "bar"])
]
prometheus_metrics = PrometheusMetrics(
definitions=definitions,
registry=prometheus_client.CollectorRegistry(),
)
label_call_args = []
def get_labels(*args, **kwargs):
label_call_args.append((args, kwargs))
return {"foo": "FOO", "bar": "BAR"}
@prometheus_metrics.record_call_latency("histo", get_labels=get_labels)
def func(param1, param2=None):
return param1
obj = object()
result = func(obj, param2="baz")
self.assertIs(result, obj)
# the get_labels function is called with the same args as the function
self.assertEqual(label_call_args, [((obj, ), {"param2": "baz"})])
self.assertIn(
'histo_count{bar="BAR",foo="FOO"} 1.0',
prometheus_metrics.generate_latest().decode("ascii"),
)
def test_record_call_latency_async(self):
definitions = [
MetricDefinition('Histogram', 'histo', 'An histogram',
['foo', 'bar'])
]
prometheus_metrics = PrometheusMetrics(
definitions=definitions,
registry=prometheus_client.CollectorRegistry())
label_call_args = []
def get_labels(*args, **kwargs):
label_call_args.append((args, kwargs))
return {'foo': 'FOO', 'bar': 'BAR'}
@prometheus_metrics.record_call_latency('histo', get_labels=get_labels)
@inlineCallbacks
def func(param1, param2=None):
yield
returnValue(param1)
obj = object()
result = yield func(obj, param2='baz')
self.assertIs(result, obj)
# the get_labels function is called with the same args as the function
self.assertEqual(label_call_args, [((obj, ), {'param2': 'baz'})])
self.assertIn('histo_count{bar="BAR",foo="FOO"} 1.0',
prometheus_metrics.generate_latest().decode('ascii'))
def test_update_call_value_class(self):
definitions = [MetricDefinition('Counter', 'a_counter', 'A Counter')]
prometheus_metrics = PrometheusMetrics(
definitions=definitions,
registry=prometheus_client.CollectorRegistry())
prometheus_metrics.update('a_counter', 'set', value=22)
self.assertIn('a_counter 22.0',
prometheus_metrics.generate_latest().decode('ascii'))
def test_with_update_handlers(self):
def update_gauge(metrics):
metrics.update('a_gauge', 'set', value=33)
prometheus_metrics = PrometheusMetrics(
definitions=[MetricDefinition('Gauge', 'a_gauge', 'A Gauge', [])],
update_handlers=[update_gauge],
registry=prometheus_client.CollectorRegistry())
self.assertIn('a_gauge 33.0',
prometheus_metrics.generate_latest().decode('ascii'))
def test_update_call_value_class(self):
definitions = [MetricDefinition("Counter", "a_counter", "A Counter")]
prometheus_metrics = PrometheusMetrics(
definitions=definitions,
registry=prometheus_client.CollectorRegistry(),
)
prometheus_metrics.update("a_counter", "set", value=22)
self.assertIn(
"a_counter 22.0",
prometheus_metrics.generate_latest().decode("ascii"),
)
def test_with_update_handlers(self):
def update_gauge(metrics):
metrics.update("a_gauge", "set", value=33)
prometheus_metrics = PrometheusMetrics(
definitions=[MetricDefinition("Gauge", "a_gauge", "A Gauge", [])],
update_handlers=[update_gauge],
registry=prometheus_client.CollectorRegistry(),
)
self.assertIn(
"a_gauge 33.0",
prometheus_metrics.generate_latest().decode("ascii"),
)
def test_update(self):
definitions = [
MetricDefinition('Gauge', 'a_gauge', 'A Gauge', ['foo', 'bar'])
]
prometheus_metrics = PrometheusMetrics(
definitions=definitions,
registry=prometheus_client.CollectorRegistry())
prometheus_metrics.update('a_gauge',
'set',
value=22,
labels={
'foo': 'FOO',
'bar': 'BAR'
})
self.assertIn('a_gauge{bar="BAR",foo="FOO"} 22.0',
prometheus_metrics.generate_latest().decode('ascii'))
def test_update(self):
registry = prometheus_client.CollectorRegistry()
metric = prometheus_client.Gauge('a_gauge',
'A Gauge', ['foo', 'bar'],
registry=registry)
prometheus_metrics = PrometheusMetrics(registry=registry,
metrics={'a_gauge': metric})
prometheus_metrics.update('a_gauge',
'set',
value=22,
labels={
'foo': 'FOO',
'bar': 'BAR'
})
self.assertIn('a_gauge{bar="BAR",foo="FOO"} 22.0',
prometheus_metrics.generate_latest().decode('ascii'))
def test_update(self):
definitions = [
MetricDefinition("Gauge", "a_gauge", "A Gauge", ["foo", "bar"])
]
prometheus_metrics = PrometheusMetrics(
definitions=definitions,
registry=prometheus_client.CollectorRegistry(),
)
prometheus_metrics.update("a_gauge",
"set",
value=22,
labels={
"foo": "FOO",
"bar": "BAR"
})
self.assertIn(
'a_gauge{bar="BAR",foo="FOO"} 22.0',
prometheus_metrics.generate_latest().decode("ascii"),
)
def test_update_empty(self):
prometheus_metrics = PrometheusMetrics()
prometheus_metrics.update('some_metric', 'inc')
self.assertIsNone(prometheus_metrics.generate_latest())
def test_empty(self):
prometheus_metrics = PrometheusMetrics()
self.assertEqual(prometheus_metrics.available_metrics, [])
self.assertIsNone(prometheus_metrics.generate_latest())