introduces hard coded deboucing for alerting

pkg/services/alerting/rule.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"regexp"
 	"strconv"
+	"time"
 
 	"github.com/grafana/grafana/pkg/components/simplejson"
 
@@ -18,6 +19,8 @@ type Rule struct {
 	Frequency           int64
 	Name                string
 	Message             string
+	LastStateChange     time.Time
+	DebounceDuration    time.Duration
 	NoDataState         m.NoDataOption
 	ExecutionErrorState m.ExecutionErrorOption
 	State               m.AlertStateType
@@ -100,6 +103,8 @@ func NewRuleFromDBAlert(ruleDef *m.Alert) (*Rule, error) {
 	model.Message = ruleDef.Message
 	model.Frequency = ruleDef.Frequency
 	model.State = ruleDef.State
+	model.LastStateChange = ruleDef.NewStateDate
+	model.DebounceDuration = time.Minute * 2 // hard coded for now
 	model.NoDataState = m.NoDataOption(ruleDef.Settings.Get("noDataState").MustString("no_data"))
 	model.ExecutionErrorState = m.ExecutionErrorOption(ruleDef.Settings.Get("executionErrorState").MustString("alerting"))
 	model.StateChanges = ruleDef.StateChanges