kiwi-simple-metrics/kiwi_simple_metrics/metrics.py

81 lines
1.7 KiB
Python

import os
from dataclasses import dataclass, field
import psutil
from .settings import SETTINGS, MetricSettings
@dataclass(slots=True, frozen=True)
class Report:
result: str
failed: bool = field(default=False, kw_only=True)
def _report(
*,
settings: MetricSettings,
name: str,
value: float,
) -> Report:
result = settings.report.format(name=name, value=value)
if (
value > settings.threshold and not settings.inverted
or value < settings.threshold and settings.inverted
):
return Report(result, failed=True)
else:
return Report(result)
def cpu_metric() -> Report | None:
if not SETTINGS.cpu.enabled:
return None
value = psutil.cpu_percent(interval=1)
return _report(
settings=SETTINGS.cpu,
name=SETTINGS.cpu.name,
value=value,
)
def disk_metric() -> Report | None:
if not SETTINGS.disk.enabled:
return None
def path_to_free_percent(path: os.PathLike) -> float:
try:
sv = os.statvfs(path)
return sv.f_bavail / sv.f_blocks * 100
except ZeroDivisionError:
return 0
data = sorted([
(str(path), path_to_free_percent(path))
for path in SETTINGS.disk.paths
], key=lambda d: d[1])
reports = [_report(
settings=SETTINGS.disk,
name=path,
value=percent,
) for path, percent in data]
report_inner = ", ".join(
report.result
for report in reports[:SETTINGS.disk.count]
)
return Report(
SETTINGS.disk.report_outer.format(
name=SETTINGS.disk.name,
inner=report_inner,
),
failed=any(
report.failed
for report in reports
),
)