62 lines
1.5 KiB
JavaScript
62 lines
1.5 KiB
JavaScript
import { ref } from 'vue'
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import { fetchBackendHealth } from '../services/system.js'
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const backendHealthy = ref(true)
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const backendChecking = ref(false)
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const backendError = ref('')
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let lastCheckedAt = 0
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const DEFAULT_HEALTH_TIMEOUT_MS = 2500
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const REQUEST_TIMEOUT_CODE = 'REQUEST_TIMEOUT'
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function isRequestTimeout(error) {
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return error?.code === REQUEST_TIMEOUT_CODE
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}
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export async function checkBackendHealth(options = {}) {
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const force = Boolean(options.force)
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const now = Date.now()
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if (!force && now - lastCheckedAt < 5000) {
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return backendHealthy.value
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}
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backendChecking.value = true
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try {
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const payload = await fetchBackendHealth({
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timeoutMs: Number(options.timeoutMs || DEFAULT_HEALTH_TIMEOUT_MS)
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})
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const ok = payload?.status === 'ok'
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backendHealthy.value = ok
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backendError.value = ok
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? ''
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: payload?.database?.error || '后端服务尚未准备完成。'
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lastCheckedAt = now
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return ok
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} catch (error) {
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if (isRequestTimeout(error) && options.allowStaleOnTimeout) {
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backendError.value = error?.message || '后端正在处理耗时任务，已先展示页面。'
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lastCheckedAt = now
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return backendHealthy.value !== false
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}
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backendHealthy.value = false
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backendError.value = error?.message || '无法连接后端服务。'
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lastCheckedAt = now
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return false
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} finally {
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backendChecking.value = false
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}
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}
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export function useBackendHealth() {
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return {
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backendHealthy,
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backendChecking,
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backendError,
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checkBackendHealth
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}
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}
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