diff --git a/.gitignore b/.gitignore
index ef34b927..c1360187 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,6 +29,7 @@ _test
 /build
 /dist
 /etc/*.local.yml
+/etc/log/log.test.json
 /data*
 
 .idea
diff --git a/src/dataobj/event.go b/src/dataobj/event.go
index 35f7790c..f62bc87d 100644
--- a/src/dataobj/event.go
+++ b/src/dataobj/event.go
@@ -21,4 +21,5 @@ type History struct {
 	Tags        map[string]string `json:"tags,omitempty"` // endpoint/counter
 	Granularity int               `json:"-"`              // alarm补齐数据时需要
 	Points      []*RRDData        `json:"points"`         // 现场值
+	Extra       string            `json:"extra"`
 }
diff --git a/src/dataobj/judge.go b/src/dataobj/judge.go
index 507f5f3d..5031084b 100644
--- a/src/dataobj/judge.go
+++ b/src/dataobj/judge.go
@@ -18,6 +18,7 @@ type JudgeItem struct {
 	DsType    string            `json:"dstype"`
 	Step      int               `json:"step"`
 	Sid       int64             `json:"sid"`
+	Extra     string            `json:"extra"`
 }
 
 func (j *JudgeItem) PrimaryKey() string {
diff --git a/src/dataobj/metric.go b/src/dataobj/metric.go
index 75e1e891..0a10bf5e 100644
--- a/src/dataobj/metric.go
+++ b/src/dataobj/metric.go
@@ -27,6 +27,7 @@ type MetricValue struct {
 	CounterType  string            `json:"counterType"`
 	Tags         string            `json:"tags"`
 	TagsMap      map[string]string `json:"tagsMap"` //保留2种格式，方便后端组件使用
+	Extra        string            `json:"extra"`
 }
 
 var bufferPool = sync.Pool{
diff --git a/src/model/event.go b/src/model/event.go
index f2e8d4d7..c7a44acb 100644
--- a/src/model/event.go
+++ b/src/model/event.go
@@ -39,6 +39,7 @@ type EventDetail struct {
 	Tags       map[string]string   `json:"tags"`
 	Points     []*EventDetailPoint `json:"points"`
 	PredPoints []*EventDetailPoint `json:"pred_points,omitempty"` // 预测值, 预测值不为空时, 现场值对应的是实际值
+	Extra      string              `json:"extra"`
 }
 
 type EventDetailPoint struct {
diff --git a/src/modules/collector/sys/funcs/push.go b/src/modules/collector/sys/funcs/push.go
index df3f4a73..ad61afdd 100644
--- a/src/modules/collector/sys/funcs/push.go
+++ b/src/modules/collector/sys/funcs/push.go
@@ -35,7 +35,6 @@ func Push(metricItems []*dataobj.MetricValue) error {
 		}
 		if item.CounterType == dataobj.COUNTER {
 			if err := CounterToGauge(item); err != nil {
-				//旧值不存在则不推送
 				logger.Warning(err)
 				continue
 			}
diff --git a/src/modules/collector/sys/plugins/scheduler.go b/src/modules/collector/sys/plugins/scheduler.go
index f771b5e1..f9f28887 100644
--- a/src/modules/collector/sys/plugins/scheduler.go
+++ b/src/modules/collector/sys/plugins/scheduler.go
@@ -28,22 +28,22 @@ func NewPluginScheduler(p *Plugin) *PluginScheduler {
 	return &scheduler
 }
 
-func (this *PluginScheduler) Schedule() {
+func (p *PluginScheduler) Schedule() {
 	go func() {
 		for {
 			select {
-			case <-this.Ticker.C:
-				PluginRun(this.Plugin)
-			case <-this.Quit:
-				this.Ticker.Stop()
+			case <-p.Ticker.C:
+				PluginRun(p.Plugin)
+			case <-p.Quit:
+				p.Ticker.Stop()
 				return
 			}
 		}
 	}()
 }
 
-func (this *PluginScheduler) Stop() {
-	close(this.Quit)
+func (p *PluginScheduler) Stop() {
+	close(p.Quit)
 }
 
 func PluginRun(plugin *Plugin) {
diff --git a/src/modules/collector/sys/ports/scheduler.go b/src/modules/collector/sys/ports/scheduler.go
index 78431310..0eb20f40 100644
--- a/src/modules/collector/sys/ports/scheduler.go
+++ b/src/modules/collector/sys/ports/scheduler.go
@@ -24,22 +24,22 @@ func NewPortScheduler(p *model.PortCollect) *PortScheduler {
 	return &scheduler
 }
 
-func (this *PortScheduler) Schedule() {
+func (p *PortScheduler) Schedule() {
 	go func() {
 		for {
 			select {
-			case <-this.Ticker.C:
-				PortCollect(this.Port)
-			case <-this.Quit:
-				this.Ticker.Stop()
+			case <-p.Ticker.C:
+				PortCollect(p.Port)
+			case <-p.Quit:
+				p.Ticker.Stop()
 				return
 			}
 		}
 	}()
 }
 
-func (this *PortScheduler) Stop() {
-	close(this.Quit)
+func (p *PortScheduler) Stop() {
+	close(p.Quit)
 }
 
 func PortCollect(p *model.PortCollect) {
diff --git a/src/modules/collector/sys/procs/scheduler.go b/src/modules/collector/sys/procs/scheduler.go
index c27fc83f..036f3e10 100644
--- a/src/modules/collector/sys/procs/scheduler.go
+++ b/src/modules/collector/sys/procs/scheduler.go
@@ -26,22 +26,22 @@ func NewProcScheduler(p *model.ProcCollect) *ProcScheduler {
 	return &scheduler
 }
 
-func (this *ProcScheduler) Schedule() {
+func (p *ProcScheduler) Schedule() {
 	go func() {
 		for {
 			select {
-			case <-this.Ticker.C:
-				ProcCollect(this.Proc)
-			case <-this.Quit:
-				this.Ticker.Stop()
+			case <-p.Ticker.C:
+				ProcCollect(p.Proc)
+			case <-p.Quit:
+				p.Ticker.Stop()
 				return
 			}
 		}
 	}()
 }
 
-func (this *ProcScheduler) Stop() {
-	close(this.Quit)
+func (p *ProcScheduler) Stop() {
+	close(p.Quit)
 }
 
 func ProcCollect(p *model.ProcCollect) {
diff --git a/src/modules/judge/backend/query/pool.go b/src/modules/judge/backend/query/pool.go
index e5561978..06bfb1e4 100644
--- a/src/modules/judge/backend/query/pool.go
+++ b/src/modules/judge/backend/query/pool.go
@@ -66,8 +66,8 @@ func createOnePool(name string, address string, connTimeout time.Duration, maxCo
 }
 
 // 同步发送, 完成发送或超时后 才能返回
-func (this *ConnPools) Call(method string, args interface{}, resp interface{}) error {
-	connPool := this.Get()
+func (cp *ConnPools) Call(method string, args interface{}, resp interface{}) error {
+	connPool := cp.Get()
 
 	conn, err := connPool.Fetch()
 	if err != nil {
@@ -75,7 +75,7 @@ func (this *ConnPools) Call(method string, args interface{}, resp interface{}) e
 	}
 
 	rpcClient := conn.(RpcClient)
-	callTimeout := time.Duration(this.CallTimeout) * time.Millisecond
+	callTimeout := time.Duration(cp.CallTimeout) * time.Millisecond
 
 	done := make(chan error, 1)
 	go func() {
@@ -97,12 +97,12 @@ func (this *ConnPools) Call(method string, args interface{}, resp interface{}) e
 	}
 }
 
-func (this *ConnPools) Get() *pool.ConnPool {
-	this.RLock()
-	defer this.RUnlock()
-	i := rand.Intn(len(this.Pools))
+func (cp *ConnPools) Get() *pool.ConnPool {
+	cp.RLock()
+	defer cp.RUnlock()
+	i := rand.Intn(len(cp.Pools))
 
-	return this.Pools[i]
+	return cp.Pools[i]
 }
 
 // RpcCient, 要实现io.Closer接口
@@ -111,23 +111,23 @@ type RpcClient struct {
 	name string
 }
 
-func (this RpcClient) Name() string {
-	return this.name
+func (r RpcClient) Name() string {
+	return r.name
 }
 
-func (this RpcClient) Closed() bool {
-	return this.cli == nil
+func (r RpcClient) Closed() bool {
+	return r.cli == nil
 }
 
-func (this RpcClient) Close() error {
-	if this.cli != nil {
-		err := this.cli.Close()
-		this.cli = nil
+func (r RpcClient) Close() error {
+	if r.cli != nil {
+		err := r.cli.Close()
+		r.cli = nil
 		return err
 	}
 	return nil
 }
 
-func (this RpcClient) Call(method string, args interface{}, reply interface{}) error {
-	return this.cli.Call(method, args, reply)
+func (r RpcClient) Call(method string, args interface{}, reply interface{}) error {
+	return r.cli.Call(method, args, reply)
 }
diff --git a/src/modules/judge/cache/event.go b/src/modules/judge/cache/event.go
index 4d4f89f4..4108ba08 100644
--- a/src/modules/judge/cache/event.go
+++ b/src/modules/judge/cache/event.go
@@ -15,15 +15,15 @@ var (
 	LastEvents = &SafeEventMap{M: make(map[string]*dataobj.Event)}
 )
 
-func (this *SafeEventMap) Get(key string) (*dataobj.Event, bool) {
-	this.RLock()
-	defer this.RUnlock()
-	event, exists := this.M[key]
+func (s *SafeEventMap) Get(key string) (*dataobj.Event, bool) {
+	s.RLock()
+	defer s.RUnlock()
+	event, exists := s.M[key]
 	return event, exists
 }
 
-func (this *SafeEventMap) Set(key string, event *dataobj.Event) {
-	this.Lock()
-	defer this.Unlock()
-	this.M[key] = event
+func (s *SafeEventMap) Set(key string, event *dataobj.Event) {
+	s.Lock()
+	defer s.Unlock()
+	s.M[key] = event
 }
diff --git a/src/modules/judge/cache/history.go b/src/modules/judge/cache/history.go
index f046c9ae..bb5c90df 100644
--- a/src/modules/judge/cache/history.go
+++ b/src/modules/judge/cache/history.go
@@ -15,30 +15,30 @@ func NewJudgeItemMap() *JudgeItemMap {
 	return &JudgeItemMap{M: make(map[string]*SafeLinkedList)}
 }
 
-func (this *JudgeItemMap) Get(key string) (*SafeLinkedList, bool) {
-	this.RLock()
-	defer this.RUnlock()
-	val, ok := this.M[key]
+func (j *JudgeItemMap) Get(key string) (*SafeLinkedList, bool) {
+	j.RLock()
+	defer j.RUnlock()
+	val, ok := j.M[key]
 	return val, ok
 }
 
-func (this *JudgeItemMap) Set(key string, val *SafeLinkedList) {
-	this.Lock()
-	defer this.Unlock()
-	this.M[key] = val
+func (j *JudgeItemMap) Set(key string, val *SafeLinkedList) {
+	j.Lock()
+	defer j.Unlock()
+	j.M[key] = val
 }
 
-func (this *JudgeItemMap) Len() int {
-	this.RLock()
-	defer this.RUnlock()
-	return len(this.M)
+func (j *JudgeItemMap) Len() int {
+	j.RLock()
+	defer j.RUnlock()
+	return len(j.M)
 }
 
-func (this *JudgeItemMap) CleanStale(before int64) {
+func (j *JudgeItemMap) CleanStale(before int64) {
 	keys := []string{}
 
-	this.RLock()
-	for key, L := range this.M {
+	j.RLock()
+	for key, L := range j.M {
 		front := L.Front()
 		if front == nil {
 			continue
@@ -48,21 +48,21 @@ func (this *JudgeItemMap) CleanStale(before int64) {
 			keys = append(keys, key)
 		}
 	}
-	this.RUnlock()
+	j.RUnlock()
 
-	this.BatchDelete(keys)
+	j.BatchDelete(keys)
 }
 
-func (this *JudgeItemMap) BatchDelete(keys []string) {
+func (j *JudgeItemMap) BatchDelete(keys []string) {
 	count := len(keys)
 	if count == 0 {
 		return
 	}
 
-	this.Lock()
-	defer this.Unlock()
+	j.Lock()
+	defer j.Unlock()
 	for i := 0; i < count; i++ {
-		delete(this.M, keys[i])
+		delete(j.M, keys[i])
 	}
 }
 
diff --git a/src/modules/judge/judge/judge.go b/src/modules/judge/judge/judge.go
index 78698949..cb9dc1ea 100644
--- a/src/modules/judge/judge/judge.go
+++ b/src/modules/judge/judge/judge.go
@@ -58,10 +58,10 @@ func ToJudge(historyMap *cache.JudgeItemMap, key string, val *dataobj.JudgeItem,
 	}
 	history := []dataobj.History{}
 
-	Judge(stra, stra.Exprs, historyData, val, now, history, "", "", []bool{})
+	Judge(stra, stra.Exprs, historyData, val, now, history, "", "", "", []bool{})
 }
 
-func Judge(stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, firstItem *dataobj.JudgeItem, now int64, history []dataobj.History, info string, value string, status []bool) {
+func Judge(stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, firstItem *dataobj.JudgeItem, now int64, history []dataobj.History, info string, value string, extra string, status []bool) {
 	stats.Counter.Set("running", 1)
 
 	if len(exps) < 1 {
@@ -85,6 +85,10 @@ func Judge(stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, f
 		Granularity: int(firstItem.Step),
 		Points:      historyData,
 	}
+	if len(history) == 0 {
+		//只有第一个指标是push的模式，可以获取到extra字段
+		h.Extra = firstItem.Extra
+	}
 	history = append(history, h)
 
 	defer func() {
@@ -130,7 +134,7 @@ func Judge(stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, f
 					Tags:     "",
 					DsType:   "GAUGE",
 				}
-				Judge(stra, exps[1:], []*dataobj.RRDData{}, judgeItem, now, history, info, value, status)
+				Judge(stra, exps[1:], []*dataobj.RRDData{}, judgeItem, now, history, info, value, extra, status)
 				return
 			}
 
@@ -138,7 +142,7 @@ func Judge(stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, f
 				firstItem.Endpoint = respData[i].Endpoint
 				firstItem.Tags = getTags(respData[i].Counter)
 				firstItem.Step = respData[i].Step
-				Judge(stra, exps[1:], respData[i].Values, firstItem, now, history, info, value, status)
+				Judge(stra, exps[1:], respData[i].Values, firstItem, now, history, info, value, extra, status)
 			}
 
 		} else {
@@ -157,7 +161,7 @@ func Judge(stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, f
 				firstItem.Endpoint = respData[i].Endpoint
 				firstItem.Tags = getTags(respData[i].Counter)
 				firstItem.Step = respData[i].Step
-				Judge(stra, exps[1:], respData[i].Values, firstItem, now, history, info, value, status)
+				Judge(stra, exps[1:], respData[i].Values, firstItem, now, history, info, value, extra, status)
 			}
 		}
 	}
diff --git a/src/modules/judge/judge/nodata.go b/src/modules/judge/judge/nodata.go
index 5a7c406c..0b2a3d2f 100644
--- a/src/modules/judge/judge/nodata.go
+++ b/src/modules/judge/judge/nodata.go
@@ -49,10 +49,7 @@ func nodataJudge() {
 				}
 
 				nodataJob.Acquire()
-				go func(stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, firstItem *dataobj.JudgeItem, now int64, history []dataobj.History, info string, value string, status []bool) {
-					defer nodataJob.Release()
-					Judge(stra, exps, historyData, firstItem, now, history, info, value, status)
-				}(stra, stra.Exprs, []*dataobj.RRDData{}, judgeItem, now, []dataobj.History{}, "", "", []bool{})
+				go AsyncJudge(nodataJob, stra, stra.Exprs, []*dataobj.RRDData{}, judgeItem, now, []dataobj.History{}, "", "", "", []bool{})
 			}
 			return
 		}
@@ -79,10 +76,12 @@ func nodataJudge() {
 			}
 
 			nodataJob.Acquire()
-			go func(stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, firstItem *dataobj.JudgeItem, now int64, history []dataobj.History, info string, value string, status []bool) {
-				defer nodataJob.Release()
-				Judge(stra, exps, historyData, firstItem, now, history, info, value, status)
-			}(stra, stra.Exprs, data.Values, judgeItem, now, []dataobj.History{}, "", "", []bool{})
+			go AsyncJudge(nodataJob, stra, stra.Exprs, data.Values, judgeItem, now, []dataobj.History{}, "", "", "", []bool{})
 		}
 	}
 }
+
+func AsyncJudge(sema *semaphore.Semaphore, stra *model.Stra, exps []model.Exp, historyData []*dataobj.RRDData, firstItem *dataobj.JudgeItem, now int64, history []dataobj.History, info string, value string, extra string, status []bool) {
+	defer sema.Release()
+	Judge(stra, exps, historyData, firstItem, now, history, info, value, extra, status)
+}
diff --git a/src/modules/transfer/backend/ring.go b/src/modules/transfer/backend/ring.go
index 8cfc1e76..cd53ec81 100644
--- a/src/modules/transfer/backend/ring.go
+++ b/src/modules/transfer/backend/ring.go
@@ -11,24 +11,24 @@ type ConsistentHashRing struct {
 	ring *consistent.Consistent
 }
 
-func (this *ConsistentHashRing) GetNode(pk string) (string, error) {
-	this.RLock()
-	defer this.RUnlock()
+func (c *ConsistentHashRing) GetNode(pk string) (string, error) {
+	c.RLock()
+	defer c.RUnlock()
 
-	return this.ring.Get(pk)
+	return c.ring.Get(pk)
 }
 
-func (this *ConsistentHashRing) Set(r *consistent.Consistent) {
-	this.Lock()
-	defer this.Unlock()
-	this.ring = r
+func (c *ConsistentHashRing) Set(r *consistent.Consistent) {
+	c.Lock()
+	defer c.Unlock()
+	c.ring = r
 }
 
-func (this *ConsistentHashRing) GetRing() *consistent.Consistent {
-	this.RLock()
-	defer this.RUnlock()
+func (c *ConsistentHashRing) GetRing() *consistent.Consistent {
+	c.RLock()
+	defer c.RUnlock()
 
-	return this.ring
+	return c.ring
 }
 
 func NewConsistentHashRing(replicas int32, nodes []string) *ConsistentHashRing {
diff --git a/src/modules/transfer/backend/sender.go b/src/modules/transfer/backend/sender.go
index f3ea01a0..d3b4e8ca 100644
--- a/src/modules/transfer/backend/sender.go
+++ b/src/modules/transfer/backend/sender.go
@@ -196,6 +196,7 @@ func Push2JudgeSendQueue(items []*dataobj.MetricValue) {
 				TagsMap:   item.TagsMap,
 				Step:      int(item.Step),
 				Sid:       stra.Id,
+				Extra:     item.Extra,
 			}
 
 			q, exists := JudgeQueues.Get(stra.JudgeInstance)
diff --git a/src/modules/transfer/cache/stra.go b/src/modules/transfer/cache/stra.go
index 902ce6ec..49a7f62f 100644
--- a/src/modules/transfer/cache/stra.go
+++ b/src/modules/transfer/cache/stra.go
@@ -15,16 +15,16 @@ var (
 	StraMap = &SafeStraMap{M: make(map[string]map[string][]*model.Stra)}
 )
 
-func (this *SafeStraMap) ReInit(m map[string]map[string][]*model.Stra) {
-	this.Lock()
-	defer this.Unlock()
-	this.M = m
+func (s *SafeStraMap) ReInit(m map[string]map[string][]*model.Stra) {
+	s.Lock()
+	defer s.Unlock()
+	s.M = m
 }
 
-func (this *SafeStraMap) GetByKey(key string) []*model.Stra {
-	this.RLock()
-	defer this.RUnlock()
-	m, exists := this.M[key[0:2]]
+func (s *SafeStraMap) GetByKey(key string) []*model.Stra {
+	s.RLock()
+	defer s.RUnlock()
+	m, exists := s.M[key[0:2]]
 	if !exists {
 		return []*model.Stra{}
 	}
@@ -32,11 +32,11 @@ func (this *SafeStraMap) GetByKey(key string) []*model.Stra {
 	return m[key]
 }
 
-func (this *SafeStraMap) GetAll() []*model.Stra {
-	this.RLock()
-	defer this.RUnlock()
+func (s *SafeStraMap) GetAll() []*model.Stra {
+	s.RLock()
+	defer s.RUnlock()
 	stras := []*model.Stra{}
-	for _, m := range this.M {
+	for _, m := range s.M {
 		for _, stra := range m {
 			stras = append(stras, stra...)
 		}
diff --git a/src/modules/transfer/rpc/query.go b/src/modules/transfer/rpc/query.go
index 272d147b..f995b893 100644
--- a/src/modules/transfer/rpc/query.go
+++ b/src/modules/transfer/rpc/query.go
@@ -5,7 +5,7 @@ import (
 	"github.com/didi/nightingale/src/modules/transfer/backend"
 )
 
-func (this *Transfer) Query(args []dataobj.QueryData, reply *dataobj.QueryDataResp) error {
+func (t *Transfer) Query(args []dataobj.QueryData, reply *dataobj.QueryDataResp) error {
 	//start := time.Now()
 	reply.Data = backend.FetchData(args)
 	return nil