first commit

api/app/controllers/metrics_controller.ts

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+import vine from '@vinejs/vine'
+import type { HttpContext } from '@adonisjs/core/http'
+import metricsService, { type HostSample } from '#services/metrics_service'
+import { openSse } from '#services/sse'
+
+const historyValidator = vine.create({
+  range: vine.enum(['1h', '24h', '7d', '30d'] as const),
+})
+
+export default class MetricsController {
+  /**
+   * Live samples (every 5 s) for the charts of the overview.
+   */
+  async live(ctx: HttpContext) {
+    const channel = openSse(ctx)
+    channel.send('init', metricsService.live)
+
+    const onSample = (sample: HostSample) => channel.send('sample', sample)
+    metricsService.on('sample', onSample)
+    channel.onClose(() => metricsService.off('sample', onSample))
+  }
+
+  async history({ request }: HttpContext) {
+    const { range } = await historyValidator.validate(request.qs())
+    return metricsService.history(range)
+  }
+}