insight metric support formula template (#158)

only support template variable 'bucket_size_in_second' currently, eg frmula: `a/{{.bucket_size_in_second}}`

Reviewed-on: https://git.infini.ltd:64443/infini/console/pulls/158
Co-authored-by: liugq <silenceqi@hotmail.com>
Co-committed-by: liugq <silenceqi@hotmail.com>

plugin/api/insight/metadata.go

@@ -5,8 +5,10 @@
 package insight
 
 import (
+	"bytes"
 	"github.com/Knetic/govaluate"
 	log "github.com/cihub/seelog"
+	"text/template"
 	"infini.sh/console/model/insight"
 	httprouter "infini.sh/framework/core/api/router"
 	"infini.sh/framework/core/elastic"
@@ -224,6 +226,24 @@ func getMetricData(metric *insight.Metric) (interface{}, error) {
 	if len(metric.Items) == 1 && formula == "" {
 		targetMetricData =  metricData
 	}else {
+		tpl, err := template.New("insight_formula").Parse(formula)
+		if err != nil {
+			return nil, err
+		}
+		msgBuffer := &bytes.Buffer{}
+		params := map[string]interface{}{}
+		if metric.BucketSize != "" {
+			du, err := util.ParseDuration(metric.BucketSize)
+			if err != nil {
+				return nil, err
+			}
+			params["bucket_size_in_second"] = du.Seconds()
+		}
+		err = tpl.Execute(msgBuffer, params)
+		if err != nil {
+			return nil, err
+		}
+		formula = msgBuffer.String()
 		for _, md := range metricData {
 			targetData := insight.MetricData{
 				Groups: md.Groups,

plugin/task_manager/common_api.go

@@ -439,6 +439,7 @@ type RepeatStatus struct {
 	LastRunTime int64 `json:"last_run_time"`
 	NextRunTime int64 `json:"next_run_time"`
 	LastRunChildTaskID string `json:"last_run_child_task_id"`
+	LastCompleteTime int64 `json:"last_complete_time"`
 }
 
 func (h *APIHandler) calcRepeatingStatus(taskItem *task.Task) (*task.Task, *RepeatStatus, error) {
@@ -470,6 +471,9 @@ func (h *APIHandler) calcRepeatingStatus(taskItem *task.Task) (*task.Task, *Repe
 	ret.LastRunTime = lastRepeatingChild.StartTimeInMillis
 	if ret.LastRunTime == 0 && lastRunChild != nil {
 		ret.LastRunTime = lastRunChild.StartTimeInMillis
+		if !lastRunChild.CompletedTime.IsZero(){
+			ret.LastCompleteTime = lastRunChild.CompletedTime.UnixMilli()
+		}
 	}
 	if lastRunChild != nil {
 		ret.LastRunChildTaskID = lastRunChild.ID