Add Dashboards UI: PromQL-backed bar/line/pie panels saved per profile (ticket 014)
Backend: replace Profile.dashboards' opaque JSON stub with typed Dashboard/Panel structs, add ProfileStore CRUD (create/save/list/delete dashboard) and matching /api/settings/profiles/:name/dashboards[/:id] routes, with tests covering the HTTP round trip and persistence across a simulated restart. Frontend: add recharts (lightweight, React 19-compatible) and a Dashboards component with a dashboard builder (create dashboards, add/remove/edit panels with a PromQL query + chart type), live per-panel previews that respect the active time range and show malformed-query errors inline instead of crashing, and load/save wired to the new profile-backed persistence. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XFUNZwCvz3kcod3352ZR2o
This commit is contained in:
Hugh Kaznowski
co-authored by
Claude Sonnet 5
Claude Sonnet 5
parent
ae21a7a0ce
commit
41362aa3d8
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import {
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Bar,
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BarChart,
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CartesianGrid,
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Cell,
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Legend,
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Line,
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LineChart,
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Pie,
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PieChart,
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ResponsiveContainer,
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Tooltip,
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XAxis,
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YAxis,
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} from 'recharts'
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import type { ChartType, PromqlSeries } from '../lib/api'
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/// Renders a label combination as a short, stable string for use as a series
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/// key/legend entry — e.g. `{"path":"/a"}` -> `path=/a`. A series with no
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/// labels at all (a bare metric name with no matchers) renders as `value`.
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export function seriesLabel(labels: Record<string, string>): string {
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const entries = Object.entries(labels)
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if (entries.length === 0) return 'value'
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return entries.map(([k, v]) => `${k}=${v}`).join(', ')
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}
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// Fixed, small categorical palette (rather than pulling in a colour-scale
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// dependency) — cycles if there are more series than colours.
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const COLORS = ['#38bdf8', '#f472b6', '#a78bfa', '#4ade80', '#fbbf24', '#fb7185', '#2dd4bf', '#f97316']
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/// A line chart with time on the x-axis, value on the y-axis, and one line
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/// per label combination (series). Points across series are merged into one
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/// row-per-timestamp dataset (recharts wants a single array of objects keyed
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/// by series name) — timestamps that only one series has are left `undefined`
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/// for the others, which recharts simply skips when drawing that line.
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function toLineData(series: PromqlSeries[]): { rows: Record<string, number | string>[]; keys: string[] } {
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const keys = series.map((s) => seriesLabel(s.labels))
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const byTimestamp = new Map<number, Record<string, number | string>>()
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series.forEach((s, i) => {
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const key = keys[i]
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for (const [ts, value] of s.points) {
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let row = byTimestamp.get(ts)
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if (!row) {
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row = { timestamp_ms: ts }
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byTimestamp.set(ts, row)
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}
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row[key] = value
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}
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})
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const rows = Array.from(byTimestamp.values()).sort(
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(a, b) => (a.timestamp_ms as number) - (b.timestamp_ms as number),
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)
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return { rows, keys }
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}
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function formatTimestamp(ts: number): string {
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const date = new Date(ts)
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return date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', second: '2-digit' })
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}
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/// Bar/pie charts need a single scalar per series, but the input is a time
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/// series — inherently lossy. Aggregation choices (documented here rather
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/// than hidden in the code):
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/// - bar: the *latest* point per series (a snapshot of "where things are
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/// now" — the common Grafana single-stat-per-series bar use case).
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/// - pie: the *sum* of all points per series, shown as a share of the total
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/// across all series (proportion of total volume, the common Grafana pie
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/// use case — e.g. "which path got the most requests over this range").
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function latestValue(series: PromqlSeries): number {
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if (series.points.length === 0) return 0
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return series.points[series.points.length - 1][1]
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}
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function sumValue(series: PromqlSeries): number {
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return series.points.reduce((total, [, value]) => total + value, 0)
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}
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export function PanelChart({ series, chartType }: { series: PromqlSeries[]; chartType: ChartType }) {
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if (series.length === 0) {
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return <div className="flex h-48 items-center justify-center text-xs text-neutral-600">No data in range.</div>
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}
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if (chartType === 'line') {
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const { rows, keys } = toLineData(series)
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return (
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<ResponsiveContainer width="100%" height={220}>
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<LineChart data={rows} margin={{ top: 8, right: 16, left: 0, bottom: 0 }}>
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<CartesianGrid strokeDasharray="3 3" stroke="#262626" />
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<XAxis
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dataKey="timestamp_ms"
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tickFormatter={formatTimestamp}
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stroke="#737373"
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tick={{ fontSize: 11, fill: '#a3a3a3' }}
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/>
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<YAxis stroke="#737373" tick={{ fontSize: 11, fill: '#a3a3a3' }} width={48} />
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<Tooltip
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labelFormatter={(ts) => formatTimestamp(Number(ts))}
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contentStyle={{ background: '#171717', border: '1px solid #404040', fontSize: 12 }}
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/>
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<Legend wrapperStyle={{ fontSize: 11 }} />
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{keys.map((key, i) => (
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<Line
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key={key}
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type="monotone"
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dataKey={key}
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stroke={COLORS[i % COLORS.length]}
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dot={false}
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connectNulls
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isAnimationActive={false}
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/>
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))}
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</LineChart>
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</ResponsiveContainer>
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)
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}
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if (chartType === 'bar') {
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const rows = series.map((s) => ({ name: seriesLabel(s.labels), value: latestValue(s) }))
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return (
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<ResponsiveContainer width="100%" height={220}>
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<BarChart data={rows} margin={{ top: 8, right: 16, left: 0, bottom: 0 }}>
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<CartesianGrid strokeDasharray="3 3" stroke="#262626" />
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<XAxis dataKey="name" stroke="#737373" tick={{ fontSize: 11, fill: '#a3a3a3' }} />
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<YAxis stroke="#737373" tick={{ fontSize: 11, fill: '#a3a3a3' }} width={48} />
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<Tooltip contentStyle={{ background: '#171717', border: '1px solid #404040', fontSize: 12 }} />
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<Bar dataKey="value" isAnimationActive={false}>
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{rows.map((_, i) => (
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<Cell key={i} fill={COLORS[i % COLORS.length]} />
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))}
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</Bar>
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</BarChart>
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</ResponsiveContainer>
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)
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}
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// Pie: share of total across label combinations (see aggregation note above).
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const rows = series.map((s) => ({ name: seriesLabel(s.labels), value: sumValue(s) }))
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const total = rows.reduce((sum, r) => sum + r.value, 0)
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if (total === 0) {
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return <div className="flex h-48 items-center justify-center text-xs text-neutral-600">No non-zero values in range.</div>
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}
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return (
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<ResponsiveContainer width="100%" height={220}>
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<PieChart margin={{ top: 8, right: 16, left: 0, bottom: 0 }}>
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<Pie data={rows} dataKey="value" nameKey="name" cx="50%" cy="50%" outerRadius={80} isAnimationActive={false}>
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{rows.map((_, i) => (
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<Cell key={i} fill={COLORS[i % COLORS.length]} />
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))}
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</Pie>
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<Tooltip
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formatter={(value) => {
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const num = typeof value === 'number' ? value : Number(value ?? 0)
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return `${num} (${((num / total) * 100).toFixed(1)}%)`
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}}
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contentStyle={{ background: '#171717', border: '1px solid #404040', fontSize: 12 }}
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/>
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<Legend wrapperStyle={{ fontSize: 11 }} />
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</PieChart>
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</ResponsiveContainer>
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)
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}
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