80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
package alert
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import (
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"github.com/didi/nightingale/v5/cache"
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"github.com/didi/nightingale/v5/models"
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"github.com/toolkits/pkg/logger"
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)
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func isEventMute(event *models.AlertEvent) bool {
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historyPoints, err := event.GetHistoryPoints()
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if err != nil {
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logger.Errorf("get event HistoryPoints:%+v failed, err: %v", event.HistoryPoints, err)
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return false
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}
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// 先去匹配一下metric为空的mute
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if matchMute("", event.ResIdent, event.TagMap) {
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return true
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}
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// 如果是与条件，就会有多个metric，任一个匹配了屏蔽规则都算被屏蔽
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for i := 0; i < len(historyPoints); i++ {
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if matchMute(historyPoints[i].Metric, event.ResIdent, event.TagMap) {
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return true
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}
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}
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resAndTags, exists := cache.ResTags.Get(event.ResIdent)
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if exists {
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if event.TriggerTime > resAndTags.Resource.MuteBtime && event.TriggerTime < resAndTags.Resource.MuteEtime {
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return true
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}
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}
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return false
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}
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func matchMute(metric, ident string, tags map[string]string) bool {
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filters, exists := cache.AlertMute.GetByKey(metric)
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if !exists {
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// 没有屏蔽规则跟这个事件相关
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return false
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}
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// 只要有一个屏蔽规则命中，那这个事件就是被屏蔽了
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for _, filter := range filters {
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if matchMuteOnce(filter, ident, tags) {
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return true
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}
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}
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return false
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}
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func matchMuteOnce(filter cache.Filter, ident string, tags map[string]string) bool {
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if filter.ResReg != nil && !filter.ResReg.MatchString(ident) {
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// 比如屏蔽规则配置的是：c3-ceph.*
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// 当前事件的资源标识是：c4-ceph01.bj
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// 只要有任一点不满足，那这个屏蔽规则也没有继续验证下去的必要
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return false
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}
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// 每个mute中的tags都得出现在event.tags，否则就是不匹配
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return mapContains(tags, filter.TagsMap)
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}
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func mapContains(big, small map[string]string) bool {
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for tagk, tagv := range small {
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val, exists := big[tagk]
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if !exists {
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return false
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}
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if val != tagv {
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return false
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}
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}
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return true
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}
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