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302
mengyaping-backend/services/monitor.go
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302
mengyaping-backend/services/monitor.go
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package services
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import (
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"log"
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"sync"
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"time"
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"mengyaping-backend/config"
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"mengyaping-backend/models"
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"mengyaping-backend/storage"
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"mengyaping-backend/utils"
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)
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// MonitorService 监控服务
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type MonitorService struct {
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httpClient *utils.HTTPClient
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storage *storage.Storage
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stopCh chan struct{}
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running bool
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mu sync.Mutex
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}
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var (
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monitorService *MonitorService
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monitorOnce sync.Once
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)
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// GetMonitorService 获取监控服务单例
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func GetMonitorService() *MonitorService {
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monitorOnce.Do(func() {
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cfg := config.GetConfig()
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monitorService = &MonitorService{
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httpClient: utils.NewHTTPClient(cfg.Monitor.Timeout),
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storage: storage.GetStorage(),
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stopCh: make(chan struct{}),
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}
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})
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return monitorService
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}
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// Start 启动监控服务
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func (s *MonitorService) Start() {
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s.mu.Lock()
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if s.running {
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s.mu.Unlock()
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return
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}
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s.running = true
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s.mu.Unlock()
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log.Println("监控服务已启动")
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// 立即执行一次检测
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go s.checkAll()
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// 定时检测
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cfg := config.GetConfig()
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ticker := time.NewTicker(cfg.Monitor.Interval)
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defer ticker.Stop()
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for {
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select {
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case <-ticker.C:
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go s.checkAll()
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case <-s.stopCh:
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log.Println("监控服务已停止")
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return
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}
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}
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}
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// Stop 停止监控服务
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func (s *MonitorService) Stop() {
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s.mu.Lock()
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defer s.mu.Unlock()
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if s.running {
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close(s.stopCh)
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s.running = false
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}
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}
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// checkAll 检查所有网站
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func (s *MonitorService) checkAll() {
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websites := s.storage.GetWebsites()
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var wg sync.WaitGroup
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semaphore := make(chan struct{}, 10) // 限制并发数
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for _, website := range websites {
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for _, urlInfo := range website.URLs {
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wg.Add(1)
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go func(w models.Website, u models.URLInfo) {
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defer wg.Done()
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semaphore <- struct{}{}
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defer func() { <-semaphore }()
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s.checkURL(w, u)
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}(website, urlInfo)
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}
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}
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wg.Wait()
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// 保存记录
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s.storage.SaveAll()
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}
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// checkURL 检查单个URL
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func (s *MonitorService) checkURL(website models.Website, urlInfo models.URLInfo) {
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result := s.httpClient.CheckWebsite(urlInfo.URL)
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record := models.MonitorRecord{
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WebsiteID: website.ID,
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URLID: urlInfo.ID,
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URL: urlInfo.URL,
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StatusCode: result.StatusCode,
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Latency: result.Latency.Milliseconds(),
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IsUp: result.Error == nil && utils.IsSuccessStatus(result.StatusCode),
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CheckedAt: time.Now(),
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}
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if result.Error != nil {
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record.Error = result.Error.Error()
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}
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s.storage.AddRecord(record)
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// 更新网站信息（标题和Favicon）
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if result.Title != "" || result.Favicon != "" {
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w := s.storage.GetWebsite(website.ID)
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if w != nil {
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needUpdate := false
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if result.Title != "" && w.Title != result.Title {
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w.Title = result.Title
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needUpdate = true
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}
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if result.Favicon != "" && w.Favicon != result.Favicon {
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w.Favicon = result.Favicon
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needUpdate = true
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}
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if needUpdate {
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w.UpdatedAt = time.Now()
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s.storage.UpdateWebsite(*w)
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}
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}
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}
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log.Printf("检测 [%s] %s - 状态码: %d, 延迟: %dms, 可用: %v",
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website.Name, urlInfo.URL, result.StatusCode, result.Latency.Milliseconds(), record.IsUp)
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}
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// CheckWebsiteNow 立即检查指定网站
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func (s *MonitorService) CheckWebsiteNow(websiteID string) {
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website := s.storage.GetWebsite(websiteID)
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if website == nil {
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return
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}
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for _, urlInfo := range website.URLs {
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go s.checkURL(*website, urlInfo)
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}
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}
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// GetWebsiteStatus 获取网站状态
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func (s *MonitorService) GetWebsiteStatus(websiteID string) *models.WebsiteStatus {
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website := s.storage.GetWebsite(websiteID)
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if website == nil {
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return nil
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}
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status := &models.WebsiteStatus{
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Website: *website,
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URLStatuses: []models.URLStatus{},
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}
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now := time.Now()
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since24h := now.Add(-24 * time.Hour)
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since7d := now.Add(-7 * 24 * time.Hour)
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var totalUptime24h, totalUptime7d float64
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var urlCount int
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for _, urlInfo := range website.URLs {
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urlStatus := s.getURLStatus(website.ID, urlInfo, since24h, since7d)
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status.URLStatuses = append(status.URLStatuses, urlStatus)
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totalUptime24h += urlStatus.Uptime24h
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totalUptime7d += urlStatus.Uptime7d
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urlCount++
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}
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if urlCount > 0 {
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status.Uptime24h = totalUptime24h / float64(urlCount)
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status.Uptime7d = totalUptime7d / float64(urlCount)
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}
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// 获取最后检测时间
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for _, urlStatus := range status.URLStatuses {
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if urlStatus.CurrentState.CheckedAt.After(status.LastChecked) {
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status.LastChecked = urlStatus.CurrentState.CheckedAt
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}
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}
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return status
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}
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// getURLStatus 获取URL状态
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func (s *MonitorService) getURLStatus(websiteID string, urlInfo models.URLInfo, since24h, since7d time.Time) models.URLStatus {
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urlStatus := models.URLStatus{
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URLInfo: urlInfo,
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}
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// 获取最新记录
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latest := s.storage.GetLatestRecord(websiteID, urlInfo.ID)
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if latest != nil {
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urlStatus.CurrentState = *latest
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}
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// 获取24小时记录
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records24h := s.storage.GetRecords(websiteID, urlInfo.ID, since24h)
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urlStatus.History24h = records24h
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// 计算24小时可用率
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if len(records24h) > 0 {
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upCount := 0
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var totalLatency int64
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for _, r := range records24h {
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if r.IsUp {
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upCount++
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}
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totalLatency += r.Latency
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}
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urlStatus.Uptime24h = float64(upCount) / float64(len(records24h)) * 100
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urlStatus.AvgLatency = totalLatency / int64(len(records24h))
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}
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// 获取7天记录并按小时统计
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records7d := s.storage.GetRecords(websiteID, urlInfo.ID, since7d)
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urlStatus.History7d = s.aggregateByHour(records7d)
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// 计算7天可用率
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if len(records7d) > 0 {
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upCount := 0
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for _, r := range records7d {
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if r.IsUp {
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upCount++
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}
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}
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urlStatus.Uptime7d = float64(upCount) / float64(len(records7d)) * 100
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}
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return urlStatus
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}
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// aggregateByHour 按小时聚合记录
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func (s *MonitorService) aggregateByHour(records []models.MonitorRecord) []models.HourlyStats {
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hourlyMap := make(map[string]*models.HourlyStats)
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for _, r := range records {
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hourKey := r.CheckedAt.Truncate(time.Hour).Format(time.RFC3339)
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if _, exists := hourlyMap[hourKey]; !exists {
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hourlyMap[hourKey] = &models.HourlyStats{
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Hour: r.CheckedAt.Truncate(time.Hour),
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}
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}
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stats := hourlyMap[hourKey]
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stats.TotalCount++
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if r.IsUp {
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stats.UpCount++
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}
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stats.AvgLatency += r.Latency
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}
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var result []models.HourlyStats
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for _, stats := range hourlyMap {
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if stats.TotalCount > 0 {
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stats.AvgLatency /= int64(stats.TotalCount)
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stats.Uptime = float64(stats.UpCount) / float64(stats.TotalCount) * 100
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}
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result = append(result, *stats)
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}
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return result
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}
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// GetAllWebsiteStatuses 获取所有网站状态
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func (s *MonitorService) GetAllWebsiteStatuses() []models.WebsiteStatus {
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websites := s.storage.GetWebsites()
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var statuses []models.WebsiteStatus
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for _, website := range websites {
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status := s.GetWebsiteStatus(website.ID)
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if status != nil {
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statuses = append(statuses, *status)
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}
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}
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return statuses
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}
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