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