Phase 3: dashboards and alerting

Saved, shareable multi-panel dashboards (table/line/bar/single-stat
panels via gridstack + uPlot, global + per-panel time range, JSON
export/import) and threshold/absence alert rules with an
ok/pending/firing evaluator and webhook/Slack/PagerDuty delivery.

- New /metadata component: Postgres control-plane store for dashboards,
  panels, notification targets, alert rules/state, and delivery log --
  see docs/phase-3-dashboard-design.md for why ClickHouse's MergeTree
  family isn't a fit for this access pattern (needs real row-level
  locking and read-your-writes consistency).
- api/internal/dashboards: dashboard/panel CRUD, pure -- panel query
  execution stays client-side, reusing the existing /query endpoint.
- New /alerting service: rule/target CRUD, a ticker-driven evaluator
  (claim-then-evaluate concurrency control, transactional-outbox
  delivery, query errors and threshold zero-rows never coerced into a
  false transition) and webhook/Slack/PagerDuty delivery with
  retry/backoff. See docs/phase-3-alerting-design.md for the full
  state-machine design and the four correctness properties it
  implements.
- web: /dashboards and /alerts UIs; cli: sentryctl dashboards/alerts
  list/get/apply, seeding a future Terraform provider's JSON contract.
- hack/alert-load-test: 500 rules against real ClickHouse data, real
  measured results in docs/phase-3-runbook.md.

Five real bugs found by actually running this against a live stack
(documented in the runbook, not just fixed silently): a latent Phase 2
bug where ClickHouse rejected the timestamp format used for
earliest=/latest= queries; a "now" literal token injected into query
text; a GridStack/uPlot layout-timing race; JS's Date.parse being too
lenient to use as a timestamp-detection heuristic; a rule's "enabled"
field silently defaulting to false when omitted; and the evaluator's
claim-batch-size and worker-pool-concurrency defaulting to the same
value, causing 500 concurrently-due rules to take 125s to cycle through
instead of the configured 60s.
This commit is contained in:
2026-08-13 17:29:38 -07:00
parent fb5049a747
commit 9435115ab7
88 changed files with 7463 additions and 298 deletions
+10 -92
View File
@@ -2,12 +2,14 @@
// Phase 2: single unified query page. Replaces Phase 0/1's two
// separate pages (raw-SQL-only /query, free-text-only /search) --
// see /docs/query-language-design.md and /docs/query-language-reference.md.
// Phase 3: query bar extracted into $lib/QueryBar.svelte (reused by
// the dashboard panel editor and alert rule editor), fetch calls
// moved into $lib/api.ts.
import ResultsTable from '$lib/ResultsTable.svelte';
import QueryBar from '$lib/QueryBar.svelte';
import { runQuery as apiRunQuery, type Language } from '$lib/api';
const apiBase = import.meta.env.VITE_API_BASE_URL ?? 'http://localhost:8080';
type Language = '' | 'sql' | 'spl';
type HistoryEntry = { query: string; language: Language; at: number };
const HISTORY_KEY = 'sentry.queryHistory';
@@ -22,16 +24,6 @@
let hasRun = $state(false);
let history = $state<HistoryEntry[]>(loadHistory());
// Client-side mirror of the backend's auto-detect heuristic
// (api/internal/querylang/planner.looksLikeSQL) -- purely a UI hint,
// the server does its own detection independently and is the
// authority on what actually runs.
function detectedLanguage(q: string): 'sql' | 'spl' {
return /^\s*select\b/i.test(q) ? 'sql' : 'spl';
}
let detected = $derived(detectedLanguage(query));
let effectiveLanguage = $derived(language === '' ? detected : language);
function loadHistory(): HistoryEntry[] {
if (typeof sessionStorage === 'undefined') return [];
try {
@@ -61,20 +53,9 @@
loading = true;
error = '';
try {
const res = await fetch(`${apiBase}/query`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ query, language })
});
const body = await res.json();
if (!res.ok) {
error = body?.error ?? `request failed with status ${res.status}`;
columns = [];
rows = [];
return;
}
columns = body.columns ?? [];
rows = body.rows ?? [];
const result = await apiRunQuery(query, language);
columns = result.columns ?? [];
rows = result.rows ?? [];
saveHistory({ query, language, at: Date.now() });
} catch (e) {
error = e instanceof Error ? e.message : String(e);
@@ -85,16 +66,6 @@
hasRun = true;
}
}
function onKeydown(e: KeyboardEvent) {
// Cmd/Ctrl+Enter runs the query -- textarea's own Enter key needs
// to stay newline-for-pipe-stage-formatting, so this isn't a bare
// Enter binding.
if ((e.metaKey || e.ctrlKey) && e.key === 'Enter') {
e.preventDefault();
runQuery();
}
}
</script>
<main>
@@ -102,35 +73,10 @@
<p>
One query bar for both filter/stats queries and free-text search — see
<code>/docs/query-language-reference.md</code> in the repo for the full syntax, or the cheat
sheet below.
sheet below. Build reusable queries into a <a href="/dashboards">dashboard</a>.
</p>
<textarea
bind:value={query}
onkeydown={onKeydown}
rows="4"
cols="100"
spellcheck="false"
placeholder={'service=api | where status>=500 | stats count by host | sort -count'}
></textarea>
<div class="controls">
<label>
Language:
<select bind:value={language}>
<option value="">Auto ({detected})</option>
<option value="spl">Pipe syntax</option>
<option value="sql">SQL</option>
</select>
</label>
<span class="detected-badge" class:sql={effectiveLanguage === 'sql'}>
{effectiveLanguage === 'sql' ? 'SQL' : 'pipe syntax'}
</span>
<button onclick={runQuery} disabled={loading || query.trim() === ''}>
{loading ? 'Running…' : 'Run query'}
</button>
<span class="hint">⌘/Ctrl+Enter to run</span>
</div>
<QueryBar bind:query bind:language onRun={runQuery} {loading} />
{#if error}
<p class="error">Error: {error}</p>
@@ -179,34 +125,6 @@
margin: 2rem auto;
padding: 0 1rem;
}
textarea {
width: 100%;
font-family: monospace;
font-size: 0.9rem;
box-sizing: border-box;
}
.controls {
margin-top: 0.5rem;
display: flex;
align-items: center;
gap: 0.75rem;
flex-wrap: wrap;
}
.detected-badge {
font-size: 0.75rem;
padding: 0.15rem 0.5rem;
border-radius: 1rem;
background: #eef;
color: #224;
}
.detected-badge.sql {
background: #fee;
color: #422;
}
.hint {
font-size: 0.8rem;
color: #777;
}
.error {
color: #b00020;
}