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# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# type: ignore
from logging import WARNING
from unittest import TestCase
from unittest.mock import Mock, patch
from opentelemetry.metrics import Meter, NoOpMeter
# FIXME Test that the meter methods can be called concurrently safely.
class ChildMeter(Meter):
# pylint: disable=signature-differs
def create_counter(self, name, unit="", description=""):
super().create_counter(name, unit=unit, description=description)
def create_up_down_counter(self, name, unit="", description=""):
super().create_up_down_counter(
name, unit=unit, description=description
)
def create_observable_counter(
self, name, callbacks, unit="", description=""
):
super().create_observable_counter(
name,
callbacks,
unit=unit,
description=description,
)
def create_histogram(
self,
name,
unit="",
description="",
*,
explicit_bucket_boundaries_advisory=None,
):
super().create_histogram(
name,
unit=unit,
description=description,
explicit_bucket_boundaries_advisory=explicit_bucket_boundaries_advisory,
)
def create_gauge(self, name, unit="", description=""):
super().create_gauge(name, unit=unit, description=description)
def create_observable_gauge(
self, name, callbacks, unit="", description=""
):
super().create_observable_gauge(
name,
callbacks,
unit=unit,
description=description,
)
def create_observable_up_down_counter(
self, name, callbacks, unit="", description=""
):
super().create_observable_up_down_counter(
name,
callbacks,
unit=unit,
description=description,
)
class TestMeter(TestCase):
# pylint: disable=no-member
# TODO: convert to assertNoLogs instead of mocking logger when 3.10 is baseline
@patch("opentelemetry.metrics._internal._logger")
def test_repeated_instrument_names(self, logger_mock):
try:
test_meter = NoOpMeter("name")
test_meter.create_counter("counter")
test_meter.create_up_down_counter("up_down_counter")
test_meter.create_observable_counter("observable_counter", Mock())
test_meter.create_histogram("histogram")
test_meter.create_gauge("gauge")
test_meter.create_observable_gauge("observable_gauge", Mock())
test_meter.create_observable_up_down_counter(
"observable_up_down_counter", Mock()
)
except Exception as error: # pylint: disable=broad-exception-caught
self.fail(f"Unexpected exception raised {error}")
for instrument_name in [
"counter",
"up_down_counter",
"histogram",
"gauge",
]:
getattr(test_meter, f"create_{instrument_name}")(instrument_name)
logger_mock.warning.assert_not_called()
for instrument_name in [
"observable_counter",
"observable_gauge",
"observable_up_down_counter",
]:
getattr(test_meter, f"create_{instrument_name}")(
instrument_name, Mock()
)
logger_mock.warning.assert_not_called()
def test_repeated_instrument_names_with_different_advisory(self):
try:
test_meter = NoOpMeter("name")
test_meter.create_histogram(
"histogram", explicit_bucket_boundaries_advisory=[1.0]
)
except Exception as error: # pylint: disable=broad-exception-caught
self.fail(f"Unexpected exception raised {error}")
for instrument_name in [
"histogram",
]:
with self.assertLogs(level=WARNING):
getattr(test_meter, f"create_{instrument_name}")(
instrument_name,
)
def test_create_counter(self):
"""
Test that the meter provides a function to create a new Counter
"""
self.assertTrue(hasattr(Meter, "create_counter"))
self.assertTrue(Meter.create_counter.__isabstractmethod__)
def test_create_up_down_counter(self):
"""
Test that the meter provides a function to create a new UpDownCounter
"""
self.assertTrue(hasattr(Meter, "create_up_down_counter"))
self.assertTrue(Meter.create_up_down_counter.__isabstractmethod__)
def test_create_observable_counter(self):
"""
Test that the meter provides a function to create a new ObservableCounter
"""
self.assertTrue(hasattr(Meter, "create_observable_counter"))
self.assertTrue(Meter.create_observable_counter.__isabstractmethod__)
def test_create_histogram(self):
"""
Test that the meter provides a function to create a new Histogram
"""
self.assertTrue(hasattr(Meter, "create_histogram"))
self.assertTrue(Meter.create_histogram.__isabstractmethod__)
def test_create_gauge(self):
"""
Test that the meter provides a function to create a new Gauge
"""
self.assertTrue(hasattr(Meter, "create_gauge"))
def test_create_observable_gauge(self):
"""
Test that the meter provides a function to create a new ObservableGauge
"""
self.assertTrue(hasattr(Meter, "create_observable_gauge"))
self.assertTrue(Meter.create_observable_gauge.__isabstractmethod__)
def test_create_observable_up_down_counter(self):
"""
Test that the meter provides a function to create a new
ObservableUpDownCounter
"""
self.assertTrue(hasattr(Meter, "create_observable_up_down_counter"))
self.assertTrue(
Meter.create_observable_up_down_counter.__isabstractmethod__
)
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