99 lines
2.3 KiB
Go
99 lines
2.3 KiB
Go
package notifier
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import (
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"fmt"
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"sync"
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"sysmonitord/internal/config"
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"sysmonitord/internal/notifier/mail"
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"sysmonitord/pkg/logger"
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"time"
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"go.uber.org/zap"
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)
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type AlertEvent struct {
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Type string
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Path string
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Reason string
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Details string
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}
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type Alerter struct {
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cfg config.NotificationConfig
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mailer *mail.Mailer
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eventChan chan AlertEvent
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buffer []AlertEvent
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mu sync.Mutex
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timer *time.Timer
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interval time.Duration
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}
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func NewAlerter(cfg config.NotificationConfig) *Alerter {
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return &Alerter{
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cfg: cfg,
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mailer: mail.NewMailer(cfg.Email),
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eventChan: make(chan AlertEvent, 100),
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buffer: make([]AlertEvent, 0),
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interval: 30 * time.Second, // Todo: 可配置化
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}
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}
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func (a *Alerter) Start() {
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go a.loop()
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}
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func (a *Alerter) PushAlert(event AlertEvent) {
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select {
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case a.eventChan <- event:
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logger.Log.Debug("[notifier] 推送告警事件", zap.String("path", event.Path), zap.String("reason", event.Reason))
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default:
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logger.Log.Warn("[notifier] 告警事件通道已满，丢弃告警", zap.String("path", event.Path), zap.String("reason", event.Reason))
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}
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}
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func (a *Alerter) loop() {
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a.timer = time.NewTimer(a.interval)
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for {
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select {
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case event := <-a.eventChan:
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a.mu.Lock()
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a.buffer = append(a.buffer, event)
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a.mu.Unlock()
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logger.Log.Debug("[notifier] 收到告警，加入待发送序列", zap.String("path", event.Path))
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case <-a.timer.C:
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logger.Log.Debug("[notifier] 定时检查告警事件，准备发送", zap.Int("count", len(a.buffer)))
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a.mu.Lock()
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if len(a.buffer) > 0 {
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a.sendAlert()
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a.buffer = make([]AlertEvent, 0)
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}
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a.mu.Unlock()
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a.timer.Reset(a.interval)
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}
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}
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}
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func (a *Alerter) sendAlert() {
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if len(a.buffer) == 0 {
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return
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}
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subject := fmt.Sprintf("【Sysmonitor】新增 %d 个告警", len(a.buffer))
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body := "以下是最近的告警事件：\n\n"
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for _, event := range a.buffer {
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body += fmt.Sprintf("- [%s] %s: %s (%s)\n", event.Type, event.Path, event.Reason, event.Details)
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}
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body += "\n请及时关注系统安全状况。"
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if err := a.mailer.Send(subject, body); err != nil {
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logger.Log.Error("[notifier] 发送告警邮件失败", zap.Error(err))
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} else {
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logger.Log.Debug("[notifier] 告警邮件发送成功", zap.Int("count", len(a.buffer)))
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}
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}
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