Status Page

<div
  class="border-l-8 rounded-md"
  :class="{
    'border-green-500': service[0] === Monitored.Status.Up,
    'border-orange-500': service[0] === Monitored.Status.Degraded,
    'border-red-500': service[0] === Monitored.Status.Down,
    'border-gray-200': service[0] === Monitored.Status.Unknown,
  }"
>
  {{ $t(localeKey.service(key as string)) }}
  <div class="text-sm text-gray-500">
    <span>{{ service[1] }}</span>
  </div>
</div>

const { data: publicData, refresh } = await useAsyncData(
  async () => app.$client.status.public.query()
)

let publicInterval: ReturnType<typeof setInterval>
onBeforeMount(() => {
  clearInterval(publicInterval)
  publicInterval = setInterval(refresh, 60 * 1000)
  onBeforeUnmount(() => clearInterval(publicInterval))
})

static async load() {
  const load = await currentLoad()
  return {
    app: {
      web: MonitorProvider.processUsage,
    },
    system: {
      avg: load.avgLoad,
      current: load.currentLoad,
      user: load.currentLoadUser,
      system: load.currentLoadSystem,
      idle: load.currentLoadIdle,
      nice: load.currentLoadNice,
    },
  }
}

static collectLoad() {
  const durationUsage = cpuUsage(MonitorProvider.lastUsage)
  const duration = hrtime(MonitorProvider.lastTime)

  MonitorProvider.lastTime = hrtime()
  MonitorProvider.lastUsage = cpuUsage()

  const calc = (a: number, b: [number, number]) => 
    MonitorProvider.#calcPercentageLoad(a, b) / cpus().length

  MonitorProvider.processUsage = {
    user: calc(durationUsage.user, duration) * 10000,
    system: calc(durationUsage.system, duration) * 10000,
    get current() {
      return this.user + this.system
    },
  }
}

static async memory() {
  const m = await mem()
  return {
    system: pick(m, [
      'total',
      'available',
      'free',
      'used',
      'active',
      'buffcache',
    ]),
  }
}

<div class="multi-progress-bar-container">
  <div
    :style="percentWidth(memory.system.active / memory.system.total * 100)"
    class="bg-blue-500 multi-progress-bar"
  >
    Active
  </div>
  <div
    :style="percentWidth(memory.system.buffcache / memory.system.total * 100)"
    class="bg-teal-500 multi-progress-bar"
  >
    Cache
  </div>
  <div
    :style="percentWidth(memory.system.free / memory.system.total * 100)"
    class="bg-gbase-300/10 multi-progress-bar"
  >
    Free
  </div>
</div>

const { data: adminData, refresh: refreshAdmin } = await useAsyncData(
  async () =>
    session.role.admin
      ? { metrics: await app.$client.status.metrics.query() }
      : {},
)

if (session.role.admin) {
  let adminInterval: ReturnType<typeof setInterval>
  onBeforeMount(() => {
    clearInterval(adminInterval)
    adminInterval = setInterval(refreshAdmin, 2000)
    onBeforeUnmount(() => clearInterval(adminInterval))
  })
}

<JsonViewer
  :value="$config"
  :expand-depth="999"
  theme="light"
  copyable
  boxed
/>

<JsonViewer
  :value="serverConfig?.npm"
  :expand-depth="999"
  theme="light"
  copyable
  boxed
/>

static async config() {
  const npm: Record<string, unknown> = {}
  const npmConfig: Record<string, unknown> = {}
  const returnValue: Record<string, unknown> = {}
  
  for (const key in env) {
    if (key.startsWith('npm_package_scripts')) {
      continue
    }
    if (key.startsWith('npm_package_dependencies_') || 
        key.startsWith('npm_package_devDependencies_')) {
      continue
    }
    if (key.startsWith('npm_config_')) {
      npmConfig[key.slice('npm_config_'.length)] = env[key]
      continue
    }
    if (key.startsWith('npm_')) {
      npm[key.slice('npm_'.length)] = env[key]
      continue
    }
    returnValue[key] = env[key]
  }
  
  return {
    npm: { ...npm, config: npmConfig },
    ...returnValue,
  }
}

const { data: publicData } = await useAsyncData(
  async () => app.$client.status.public.query()
)

const { data: adminData } = await useAsyncData(
  async () =>
    session.role.admin
      ? { metrics: await app.$client.status.metrics.query() }
      : {},
)

const { data: serverConfig } = await useAsyncData(
  async () =>
    session.role.owner
      ? await app.$client.status.config.query()
      : undefined
)

export const router = _router({
  public: p.query(monitor.reportStatus),
  metrics: staffProcedure.query(MonitorProvider.metrics),
  config: ownerProcedure.query(MonitorProvider.config),
})

import { Monitored } from '$base/server/@extends'

export class MyService extends Monitored {
  [Monitored.status]: Monitored.Report = [
    Monitored.Status.Unknown, 
    'Initializing...'
  ]
  
  async initialize() {
    try {
      // ... initialization logic
      this[Monitored.status] = [
        Monitored.Status.Up, 
        'Service operational'
      ]
    } catch (error) {
      this[Monitored.status] = [
        Monitored.Status.Down, 
        error.message
      ]
    }
  }
}

// server/singleton/service/index.ts
export { myService } from './my-service'

this[Monitored.status] = [
  Monitored.Status.Degraded,
  'High latency detected'
]

.multi-progress-bar-container {
  @apply overflow-hidden h-4 mb-4 text-xs flex rounded-xl shadow;
  .multi-progress-bar {
    @apply shadow-none flex flex-col text-center whitespace-nowrap 
           justify-center transition-[width] duration-300 
           overflow-hidden text-clip;
  }
}

en-GB:
  system-load: System Load
  user: User
  system: System
  app-load: App Load
  memory: Memory
  active: Active
  cache: Cache
  free: Free

zh-CN:
  system-load: 系统负载
  user: 用户
  system: 系统
  app-load: 应用负载
  memory: 内存

const fmtPercent = new Intl.NumberFormat(undefined, {
  style: 'percent',
  minimumFractionDigits: 2,
})

const fmtCompact = new Intl.NumberFormat('en-US', {
  style: 'unit',
  unit: 'megabyte',
  unitDisplay: 'narrow',
})

export class MonitorProvider {
  static interval = 2000
  static tick: NodeJS.Timeout

  static start() {
    clearInterval(MonitorProvider.tick)
    MonitorProvider.tick = setInterval(
      MonitorProvider.collectLoad, 
      MonitorProvider.interval
    )
  }
}