def test_measurement_init(self):
try:
# int
Measurement(321, {"hello": "world"})
# float
Measurement(321.321, {"hello": "world"})
except Exception: # pylint: disable=broad-except
self.fail(
"Unexpected exception raised when instantiating Measurement")
def cpu_time_callback() -> Iterable[Measurement]:
procstat = io.StringIO(self.procstat_str)
procstat.readline() # skip the first line
for line in procstat:
if not line.startswith("cpu"):
break
cpu, *states = line.split()
yield Measurement(
int(states[0]) // 100, {
"cpu": cpu,
"state": "user"
})
yield Measurement(
int(states[1]) // 100, {
"cpu": cpu,
"state": "nice"
})
yield Measurement(
int(states[2]) // 100, {
"cpu": cpu,
"state": "system"
})
yield Measurement(
int(states[3]) // 100, {
"cpu": cpu,
"state": "idle"
})
yield Measurement(
int(states[4]) // 100, {
"cpu": cpu,
"state": "iowait"
})
yield Measurement(
int(states[5]) // 100, {
"cpu": cpu,
"state": "irq"
})
yield Measurement(
int(states[6]) // 100, {
"cpu": cpu,
"state": "softirq"
})
yield Measurement(
int(states[7]) // 100, {
"cpu": cpu,
"state": "guest"
})
yield Measurement(
int(states[8]) // 100, {
"cpu": cpu,
"state": "guest_nice"
})
def test_measurement_equality(self):
self.assertEqual(
Measurement(321, {"hello": "world"}),
Measurement(321, {"hello": "world"}),
)
self.assertNotEqual(
Measurement(321, {"hello": "world"}),
Measurement(321.321, {"hello": "world"}),
)
self.assertNotEqual(
Measurement(321, {"baz": "world"}),
Measurement(321, {"hello": "world"}),
)
class TestCpuTimeIntegration(TestCase):
"""Integration test of scraping CPU time from proc stat with an observable
counter"""
procstat_str = """\
cpu 8549517 4919096 9165935 1430260740 1641349 0 1646147 623279 0 0
cpu0 615029 317746 594601 89126459 129629 0 834346 42137 0 0
cpu1 588232 349185 640492 89156411 124485 0 241004 41862 0 0
intr 4370168813 38 9 0 0 1639 0 0 0 0 0 2865202 0 152 0 0 0 0 0 0 0 0 0 0 0 0 7236812 5966240 4501046 6467792 7289114 6048205 5299600 5178254 4642580 6826812 6880917 6230308 6307699 4699637 6119330 4905094 5644039 4700633 10539029 5365438 6086908 2227906 5094323 9685701 10137610 7739951 7143508 8123281 4968458 5683103 9890878 4466603 0 0 0 8929628 0 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ctxt 6877594077
btime 1631501040
processes 2557351
procs_running 2
procs_blocked 0
softirq 1644603067 0 166540056 208 309152755 8936439 0 1354908 935642970 13 222975718\n"""
measurements_expected = [
Measurement(6150, {
"cpu": "cpu0",
"state": "user"
}),
Measurement(3177, {
"cpu": "cpu0",
"state": "nice"
}),
Measurement(5946, {
"cpu": "cpu0",
"state": "system"
}),
Measurement(891264, {
"cpu": "cpu0",
"state": "idle"
}),
Measurement(1296, {
"cpu": "cpu0",
"state": "iowait"
}),
Measurement(0, {
"cpu": "cpu0",
"state": "irq"
}),
Measurement(8343, {
"cpu": "cpu0",
"state": "softirq"
}),
Measurement(421, {
"cpu": "cpu0",
"state": "guest"
}),
Measurement(0, {
"cpu": "cpu0",
"state": "guest_nice"
}),
Measurement(5882, {
"cpu": "cpu1",
"state": "user"
}),
Measurement(3491, {
"cpu": "cpu1",
"state": "nice"
}),
Measurement(6404, {
"cpu": "cpu1",
"state": "system"
}),
Measurement(891564, {
"cpu": "cpu1",
"state": "idle"
}),
Measurement(1244, {
"cpu": "cpu1",
"state": "iowait"
}),
Measurement(0, {
"cpu": "cpu1",
"state": "irq"
}),
Measurement(2410, {
"cpu": "cpu1",
"state": "softirq"
}),
Measurement(418, {
"cpu": "cpu1",
"state": "guest"
}),
Measurement(0, {
"cpu": "cpu1",
"state": "guest_nice"
}),
]
def test_cpu_time_callback(self):
meter = _DefaultMeter("foo")
def cpu_time_callback() -> Iterable[Measurement]:
procstat = io.StringIO(self.procstat_str)
procstat.readline() # skip the first line
for line in procstat:
if not line.startswith("cpu"):
break
cpu, *states = line.split()
yield Measurement(
int(states[0]) // 100, {
"cpu": cpu,
"state": "user"
})
yield Measurement(
int(states[1]) // 100, {
"cpu": cpu,
"state": "nice"
})
yield Measurement(
int(states[2]) // 100, {
"cpu": cpu,
"state": "system"
})
yield Measurement(
int(states[3]) // 100, {
"cpu": cpu,
"state": "idle"
})
yield Measurement(
int(states[4]) // 100, {
"cpu": cpu,
"state": "iowait"
})
yield Measurement(
int(states[5]) // 100, {
"cpu": cpu,
"state": "irq"
})
yield Measurement(
int(states[6]) // 100, {
"cpu": cpu,
"state": "softirq"
})
yield Measurement(
int(states[7]) // 100, {
"cpu": cpu,
"state": "guest"
})
yield Measurement(
int(states[8]) // 100, {
"cpu": cpu,
"state": "guest_nice"
})
observable_counter = meter.create_observable_counter(
"system.cpu.time",
callback=cpu_time_callback,
unit="s",
description="CPU time",
)
measurements = list(observable_counter._callback())
self.assertEqual(measurements, self.measurements_expected)
def test_cpu_time_generator(self):
meter = _DefaultMeter("foo")
def cpu_time_generator(
) -> Generator[Iterable[Measurement], None, None]:
while True:
measurements = []
procstat = io.StringIO(self.procstat_str)
procstat.readline() # skip the first line
for line in procstat:
if not line.startswith("cpu"):
break
cpu, *states = line.split()
measurements.append(
Measurement(
int(states[0]) // 100,
{
"cpu": cpu,
"state": "user"
},
))
measurements.append(
Measurement(
int(states[1]) // 100,
{
"cpu": cpu,
"state": "nice"
},
))
measurements.append(
Measurement(
int(states[2]) // 100,
{
"cpu": cpu,
"state": "system"
},
))
measurements.append(
Measurement(
int(states[3]) // 100,
{
"cpu": cpu,
"state": "idle"
},
))
measurements.append(
Measurement(
int(states[4]) // 100,
{
"cpu": cpu,
"state": "iowait"
},
))
measurements.append(
Measurement(
int(states[5]) // 100, {
"cpu": cpu,
"state": "irq"
}))
measurements.append(
Measurement(
int(states[6]) // 100,
{
"cpu": cpu,
"state": "softirq"
},
))
measurements.append(
Measurement(
int(states[7]) // 100,
{
"cpu": cpu,
"state": "guest"
},
))
measurements.append(
Measurement(
int(states[8]) // 100,
{
"cpu": cpu,
"state": "guest_nice"
},
))
yield measurements
observable_counter = meter.create_observable_counter(
"system.cpu.time",
callback=cpu_time_generator(),
unit="s",
description="CPU time",
)
measurements = list(observable_counter._callback())
self.assertEqual(measurements, self.measurements_expected)
def cpu_time_generator(
) -> Generator[Iterable[Measurement], None, None]:
while True:
measurements = []
procstat = io.StringIO(self.procstat_str)
procstat.readline() # skip the first line
for line in procstat:
if not line.startswith("cpu"):
break
cpu, *states = line.split()
measurements.append(
Measurement(
int(states[0]) // 100,
{
"cpu": cpu,
"state": "user"
},
))
measurements.append(
Measurement(
int(states[1]) // 100,
{
"cpu": cpu,
"state": "nice"
},
))
measurements.append(
Measurement(
int(states[2]) // 100,
{
"cpu": cpu,
"state": "system"
},
))
measurements.append(
Measurement(
int(states[3]) // 100,
{
"cpu": cpu,
"state": "idle"
},
))
measurements.append(
Measurement(
int(states[4]) // 100,
{
"cpu": cpu,
"state": "iowait"
},
))
measurements.append(
Measurement(
int(states[5]) // 100, {
"cpu": cpu,
"state": "irq"
}))
measurements.append(
Measurement(
int(states[6]) // 100,
{
"cpu": cpu,
"state": "softirq"
},
))
measurements.append(
Measurement(
int(states[7]) // 100,
{
"cpu": cpu,
"state": "guest"
},
))
measurements.append(
Measurement(
int(states[8]) // 100,
{
"cpu": cpu,
"state": "guest_nice"
},
))
yield measurements