97 lines
3.2 KiB
TypeScript
97 lines
3.2 KiB
TypeScript
// SLA 服务可用性档位定义
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// 参考：mail_monitor_wechat/README.md 服务可用性档位说明
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export interface SlaTier {
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name: string
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availability: number
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penalty: number
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ratio: number | null // 当月总秒数占比，第五档 ratio 为 null（无上限）
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}
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export const SLA_TIERS: SlaTier[] = [
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{ name: '第一档', availability: 0.99, penalty: 0, ratio: 0.01 },
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{ name: '第二档', availability: 0.97, penalty: 0.10, ratio: 0.03 },
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{ name: '第三档', availability: 0.95, penalty: 0.25, ratio: 0.05 },
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{ name: '第四档', availability: 0.90, penalty: 0.50, ratio: 0.10 },
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{ name: '第五档', availability: 0, penalty: 1.00, ratio: null },
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]
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export interface SlaStatus {
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level: 'safe' | 'warning' | 'over-tier1' | 'critical' | 'excluded'
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color: string
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text: string
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}
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/**
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* 返回指定年月的总秒数
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*/
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export function getMonthSeconds(year: number, month: number): number {
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const daysInMonth = new Date(year, month, 0).getDate()
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return daysInMonth * 24 * 3600
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}
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/**
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* 返回第一档 SLA 截止时间
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* 截止 = assign_time + 当月总秒数 × 1%
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*/
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export function getTier1Deadline(assignTime: string): Date {
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const at = new Date(assignTime)
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const monthSec = getMonthSeconds(at.getFullYear(), at.getMonth() + 1)
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const tier1Window = monthSec * 0.01 // 1%
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return new Date(at.getTime() + tier1Window * 1000)
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}
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/**
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* 返回第二档 SLA 截止时间（用于"严重"判定）
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*/
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export function getTier2Deadline(assignTime: string): Date {
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const at = new Date(assignTime)
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const monthSec = getMonthSeconds(at.getFullYear(), at.getMonth() + 1)
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const tier2Window = monthSec * 0.03 // 3%
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return new Date(at.getTime() + tier2Window * 1000)
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}
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/**
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* 根据 assign_time 和 counted_in_sla 返回 SLA 状态
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*/
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export function getSlaStatus(assignTime: string, countedInSla: number): SlaStatus {
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if (countedInSla === 0) {
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return { level: 'excluded', color: '#94a3b8', text: '不计入SLA' }
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}
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const now = new Date()
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const tier1Deadline = getTier1Deadline(assignTime)
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const tier1Window = tier1Deadline.getTime() - new Date(assignTime).getTime()
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// 剩余时间（毫秒），正数表示还没超，负数表示已超
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const remaining = tier1Deadline.getTime() - now.getTime()
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if (remaining > 0) {
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const remainingRatio = remaining / tier1Window
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if (remainingRatio > 0.5) {
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const h = Math.floor(remaining / 3600000)
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const m = Math.floor((remaining % 3600000) / 60000)
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return { level: 'safe', color: '#22c55e', text: `还剩 ${h}h ${m}m` }
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} else {
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const h = Math.floor(remaining / 3600000)
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const m = Math.floor((remaining % 3600000) / 60000)
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return { level: 'warning', color: '#eab308', text: `还剩 ${h}h ${m}m` }
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}
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}
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// 已超第一档
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const exceeded = Math.abs(remaining)
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const tier2Deadline = getTier2Deadline(assignTime)
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if (now < tier2Deadline) {
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const h = Math.floor(exceeded / 3600000)
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const m = Math.floor((exceeded % 3600000) / 60000)
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return { level: 'over-tier1', color: '#f97316', text: `超时 ${h}h ${m}m` }
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}
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// 已超第二档（严重）
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const h = Math.floor(exceeded / 3600000)
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const m = Math.floor((exceeded % 3600000) / 60000)
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return { level: 'critical', color: '#ef4444', text: `超时 ${h}h ${m}m` }
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}
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