def _test_metrics(self, observer_name, expected):
meter = self.meter_provider.get_meter(__name__)
with mock.patch("opentelemetry.metrics.get_meter") as mock_get_meter:
mock_get_meter.return_value = meter
system_metrics = SystemMetrics(self.memory_metrics_exporter)
self._assert_metrics(observer_name, system_metrics, expected)
def test_system_metrics_constructor(self):
# ensure the observers have been registered
meter = metrics.get_meter(__name__)
with mock.patch("opentelemetry.metrics.get_meter") as mock_get_meter:
mock_get_meter.return_value = meter
SystemMetrics(self.memory_metrics_exporter)
self.assertEqual(len(meter.observers), 18)
observer_names = [
"system.cpu.time",
"system.cpu.utilization",
"system.memory.usage",
"system.memory.utilization",
"system.swap.usage",
"system.swap.utilization",
"system.disk.io",
"system.disk.operations",
"system.disk.time",
"system.disk.merged",
"system.network.dropped_packets",
"system.network.packets",
"system.network.errors",
"system.network.io",
"system.network.connections",
"runtime.{}.memory".format(self.implementation),
"runtime.{}.cpu_time".format(self.implementation),
"runtime.{}.gc_count".format(self.implementation),
]
for observer in meter.observers:
self.assertIn(observer.name, observer_names)
observer_names.remove(observer.name)
def test_system_metrics_constructor(self):
# ensure the observers have been registered
meter = metrics.get_meter(__name__)
with mock.patch("opentelemetry.metrics.get_meter") as mock_get_meter:
mock_get_meter.return_value = meter
SystemMetrics(self.memory_metrics_exporter)
self.assertEqual(len(meter.observers), 6)
observer_names = [
"system.mem",
"system.cpu",
"system.net.bytes",
"runtime.python.mem",
"runtime.python.cpu",
"runtime.python.gc.count",
]
for observer in meter.observers:
self.assertIn(observer.name, observer_names)
observer_names.remove(observer.name)
def test_runtime_memory(self):
meter = self.meter_provider.get_meter(__name__)
with mock.patch("opentelemetry.metrics.get_meter") as mock_get_meter:
mock_get_meter.return_value = meter
system_metrics = SystemMetrics(self.memory_metrics_exporter)
with mock.patch.object(
system_metrics._proc, # pylint: disable=protected-access
"memory_info",
) as mock_runtime_memory:
RuntimeMemory = namedtuple(
"RuntimeMemory",
["rss", "vms", "pfaults", "pageins"],
)
mock_runtime_memory.return_value = RuntimeMemory(
rss=9777152, vms=4385665024, pfaults=2631, pageins=49)
expected = {
(("type", "rss"), ): 9777152,
(("type", "vms"), ): 4385665024,
}
self._assert_metrics("runtime.python.mem", system_metrics,
expected)
def test_runtime_cpu(self):
meter = self.meter_provider.get_meter(__name__)
with mock.patch("opentelemetry.metrics.get_meter") as mock_get_meter:
mock_get_meter.return_value = meter
system_metrics = SystemMetrics(self.memory_metrics_exporter)
with mock.patch.object(
system_metrics._proc, # pylint: disable=protected-access
"cpu_times",
) as mock_runtime_cpu_times:
RuntimeCPU = namedtuple("RuntimeCPU",
["user", "nice", "system"])
mock_runtime_cpu_times.return_value = RuntimeCPU(user=100.48,
nice=0.0,
system=200.43)
expected = {
(("type", "user"), ): 100.48,
(("type", "system"), ): 200.43,
}
self._assert_metrics("runtime.python.cpu", system_metrics,
expected)