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93 lines
3.3 KiB
Python
93 lines
3.3 KiB
Python
from dataclasses import dataclass
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from datetime import timedelta
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from typing import Any, Literal
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from django.utils.timezone import now as timezone_now
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from typing_extensions import override
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from analytics.lib.counts import ALL_COUNT_STATS, CountStat
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from analytics.models import installation_epoch
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from scripts.lib.zulip_tools import atomic_nagios_write
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from zerver.lib.management import ZulipBaseCommand
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from zerver.lib.timestamp import TimeZoneNotUTCError, floor_to_day, floor_to_hour, verify_UTC
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from zerver.models import Realm
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states = {
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0: "OK",
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1: "WARNING",
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2: "CRITICAL",
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3: "UNKNOWN",
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}
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@dataclass
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class NagiosResult:
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status: Literal["ok", "warning", "critical", "unknown"]
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message: str
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class Command(ZulipBaseCommand):
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help = """Checks FillState table.
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Run as a cron job that runs every hour."""
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@override
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def handle(self, *args: Any, **options: Any) -> None:
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fill_state = self.get_fill_state()
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atomic_nagios_write("check-analytics-state", fill_state.status, fill_state.message)
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def get_fill_state(self) -> NagiosResult:
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if not Realm.objects.exists():
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return NagiosResult(status="ok", message="No realms exist, so not checking FillState.")
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warning_unfilled_properties = []
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critical_unfilled_properties = []
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for property, stat in ALL_COUNT_STATS.items():
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last_fill = stat.last_successful_fill()
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if last_fill is None:
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last_fill = installation_epoch()
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try:
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verify_UTC(last_fill)
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except TimeZoneNotUTCError:
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return NagiosResult(
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status="critical", message=f"FillState not in UTC for {property}"
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)
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if stat.frequency == CountStat.DAY:
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floor_function = floor_to_day
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warning_threshold = timedelta(hours=26)
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critical_threshold = timedelta(hours=50)
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else: # CountStat.HOUR
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floor_function = floor_to_hour
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warning_threshold = timedelta(minutes=90)
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critical_threshold = timedelta(minutes=150)
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if floor_function(last_fill) != last_fill:
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return NagiosResult(
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status="critical",
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message=f"FillState not on {stat.frequency} boundary for {property}",
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)
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time_to_last_fill = timezone_now() - last_fill
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if time_to_last_fill > critical_threshold:
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critical_unfilled_properties.append(property)
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elif time_to_last_fill > warning_threshold:
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warning_unfilled_properties.append(property)
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if len(critical_unfilled_properties) == 0 and len(warning_unfilled_properties) == 0:
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return NagiosResult(status="ok", message="FillState looks fine.")
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if len(critical_unfilled_properties) == 0:
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return NagiosResult(
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status="warning",
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message="Missed filling {} once.".format(
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", ".join(warning_unfilled_properties),
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),
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)
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return NagiosResult(
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status="critical",
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message="Missed filling {} once. Missed filling {} at least twice.".format(
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", ".join(warning_unfilled_properties),
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", ".join(critical_unfilled_properties),
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),
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)
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