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bvandeusenandClaude Opus 5.5 58bfc7c361 feat(alerts): one evaluation path; host-agent ingest fires rules (#5060)
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#5060 "One evaluation path: record_metrics batch API; host-agent ingest
evaluates rules".

- record_metrics(session, rows) writes metric rows and evaluates the rules
  that watch them, reading rules, states and maintenance windows once per
  batch. Each rule sees its key's samples oldest first, so an agent catching
  up after an outage counts consecutive checks as they happened.
- Host-agent ingest now goes through it. Before, it wrote plugin_metrics
  directly and no host_agent rule could ever fire. The catalog gains the
  per-mount disk_used_pct ("<host>:<mount>").
- MetricBatch gathers a transaction's samples; the docker ingest, traefik,
  unifi, snmp, monitor and self-monitor writers record one batch each instead
  of a rule query per sample.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-06 12:53:40 -04:00
bvandeusenandClaude Opus 4.8 35f658b573 feat(monitors): unify ping/dns/http into one Monitor entity + custom targets
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Collapse the three former check types into a single core `Monitor` entity
with one management surface (/monitors), one result table (monitor_results),
and a single scheduled task. Every type can now watch a free-standing custom
destination (optional host_id) — not just a registered Host.

- models: Monitor + MonitorResult replace PingResult/DnsResult; Host loses its
  ping/dns facet columns (now Monitor rows linked by host_id).
- checks: monitors/{ping,dns,http}.py pure probes + runner.run_monitor
  dispatcher; one monitor_check scheduler with a per-monitor due-filter.
- status: single monitor_status_source replaces the three sources.
- UI: /monitors blueprint (type-aware add/edit/list/widget); host hub shows a
  host's linked monitors + "add monitor for this host"; nav + widget registry
  + alert metric catalog rewired. http plugin folded into core and removed.
- migration 0022 merges the http branch, data-migrates host facets +
  http_monitors + all three result histories, drops the old tables/columns.

Resolves the per-host ping/dns auto-attach issue (#275): monitors are now
explicit, never auto-added to every host.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC
2026-06-18 08:56:13 -04:00