feat: support to mute by resource classpath_prefix (#785)

alert/mute.go

 package alert
 
 import (
+	"strings"
+
 	"github.com/didi/nightingale/v5/cache"
 	"github.com/didi/nightingale/v5/models"
 	"github.com/toolkits/pkg/logger"
@@ -14,13 +16,13 @@ func isEventMute(event *models.AlertEvent) bool {
 	}
 
 	// 先去匹配一下metric为空的mute
-	if matchMute("", event.ResIdent, event.TagMap) {
+	if matchMute("", event.ResIdent, event.TagMap, event.ResClasspaths) {
 		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) {
+		if matchMute(historyPoints[i].Metric, event.ResIdent, event.TagMap, event.ResClasspaths) {
 			return true
 		}
 	}
@@ -35,7 +37,7 @@ func isEventMute(event *models.AlertEvent) bool {
 	return false
 }
 
-func matchMute(metric, ident string, tags map[string]string) bool {
+func matchMute(metric, ident string, tags map[string]string, classpaths string) bool {
 	filters, exists := cache.AlertMute.GetByKey(metric)
 	if !exists {
 		// 没有屏蔽规则跟这个事件相关
@@ -44,7 +46,7 @@ func matchMute(metric, ident string, tags map[string]string) bool {
 
 	// 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) {
+		if matchMuteOnce(filter, ident, tags, classpaths) {
 			return true
 		}
 	}
@@ -52,7 +54,15 @@ func matchMute(metric, ident string, tags map[string]string) bool {
 	return false
 }
 
-func matchMuteOnce(filter cache.Filter, ident string, tags map[string]string) bool {
+func matchMuteOnce(filter cache.Filter, ident string, tags map[string]string, classpaths string) bool {
+	if len(filter.ClasspathPrefix) != 0 && !strings.HasPrefix(classpaths, filter.ClasspathPrefix) && !strings.Contains(classpaths, " "+filter.ClasspathPrefix) {
+		//没配置分组屏蔽就不做后续比较
+		//比如事件的资源calsspath为“n9e.mon n9e.rdb ccp.web”，配置屏蔽为n9e.rdb
+		//只要字符串前缀为n9e.rdb或者字符串包含“ n9e.rdb”即可判断所有alsspath中是否有前缀为n9e.rdb的
+		//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
+	}
+
 	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

cache/alert_mute.go

@@ -10,8 +10,9 @@ type AlertMuteMap struct {
 	Data map[string][]Filter
 }
 type Filter struct {
-	ResReg  *regexp.Regexp
-	TagsMap map[string]string
+	ClasspathPrefix string
+	ResReg          *regexp.Regexp
+	TagsMap         map[string]string
 }
 
 var AlertMute = &AlertMuteMap{Data: make(map[string][]Filter)}

http/router_mute.go

@@ -23,12 +23,13 @@ func muteGets(c *gin.Context) {
 }
 
 type muteForm struct {
-	Metric     string `json:"metric"`
-	ResFilters string `json:"res_filters"`
-	TagFilters string `json:"tags_filters"`
-	Cause      string `json:"cause"`
-	Btime      int64  `json:"btime"`
-	Etime      int64  `json:"etime"`
+	ClasspathPrefix string `json:"classpath_prefix "`
+	Metric          string `json:"metric"`
+	ResFilters      string `json:"res_filters"`
+	TagFilters      string `json:"tags_filters"`
+	Cause           string `json:"cause"`
+	Btime           int64  `json:"btime"`
+	Etime           int64  `json:"etime"`
 }
 
 func muteAdd(c *gin.Context) {
@@ -38,13 +39,14 @@ func muteAdd(c *gin.Context) {
 	me := loginUser(c).MustPerm("mute_create")
 
 	mt := models.Mute{
-		Metric:     f.Metric,
-		ResFilters: f.ResFilters,
-		TagFilters: f.TagFilters,
-		Cause:      f.Cause,
-		Btime:      f.Btime,
-		Etime:      f.Etime,
-		CreateBy:   me.Username,
+		ClasspathPrefix: f.ClasspathPrefix,
+		Metric:          f.Metric,
+		ResFilters:      f.ResFilters,
+		TagFilters:      f.TagFilters,
+		Cause:           f.Cause,
+		Btime:           f.Btime,
+		Etime:           f.Etime,
+		CreateBy:        me.Username,
 	}
 
 	renderMessage(c, mt.Add())

models/mute.go

@@ -10,18 +10,18 @@ import (
 )
 
 type Mute struct {
-	Id         int64  `json:"id"`
-	Metric     string `json:"metric"`
-	ResFilters string `json:"res_filters"`
-	TagFilters string `json:"tags_filters"`
-	Cause      string `json:"cause"`
-	Btime      int64  `json:"btime"`
-	Etime      int64  `json:"etime"`
-	CreateBy   string `json:"create_by"`
-	CreateAt   int64  `json:"create_at"`
-
-	ResRegexp *regexp.Regexp    `xorm:"-" json:"-"`
-	TagsMap   map[string]string `xorm:"-" json:"-"`
+	Id              int64             `json:"id"`
+	ClasspathPrefix string            `json:"classpath_prefix"`
+	Metric          string            `json:"metric"`
+	ResFilters      string            `json:"res_filters"`
+	TagFilters      string            `json:"tags_filters"`
+	Cause           string            `json:"cause"`
+	Btime           int64             `json:"btime"`
+	Etime           int64             `json:"etime"`
+	CreateBy        string            `json:"create_by"`
+	CreateAt        int64             `json:"create_at"`
+	ResRegexp       *regexp.Regexp    `xorm:"-" json:"-"`
+	TagsMap         map[string]string `xorm:"-" json:"-"`
 }
 
 func (m *Mute) TableName() string {

sql/n9e.sql

@@ -160,6 +160,7 @@ CREATE TABLE `classpath_favorite` (
 
 CREATE TABLE `mute` (
     `id` bigint unsigned not null auto_increment,
+    `classpath_prefix` varchar(255) not null default '' comment 'classpath prefix',
     `metric` varchar(255) not null comment 'required',
     `res_filters` varchar(4096) not null default 'resource filters',
     `tag_filters` varchar(8192) not null default '',

timer/alert_mute.go

@@ -58,8 +58,9 @@ func syncAlertMutes() error {
 		}
 
 		filter := cache.Filter{
-			ResReg:  mutes[i].ResRegexp,
-			TagsMap: mutes[i].TagsMap,
+			ResReg:          mutes[i].ResRegexp,
+			TagsMap:         mutes[i].TagsMap,
+			ClasspathPrefix: mutes[i].ClasspathPrefix,
 		}
 
 		muteMap[mutes[i].Metric] = append(muteMap[mutes[i].Metric], filter)