feat(alerting): save alert state

pkg/services/alerting/alert_rule_reader.go

@@ -18,14 +18,16 @@ func (this AlertRuleReader) Fetch() []m.AlertRule {
 		//{Id: 4, Title: "alert rule 4", Interval: "10s", Frequency: 5},
 		//{Id: 5, Title: "alert rule 5", Interval: "10s", Frequency: 5},
 		{
-			Id:           6,
+			Id:           1,
 			OrgId:        1,
-			Title:        "alert rule 6",
+			Title:        "alert rule 1",
 			Interval:     "10s",
 			Frequency:    3,
 			DatasourceId: 1,
-			WarnOperator: ">",
-			WarnLevel:    100,
+			WarnOperator: "<",
+			WarnLevel:    3,
+			CritOperator: "<",
+			CritLevel:    4,
 			Aggregator:   "avg",
 			Query:        `{"refId":"A","target":"statsd.fakesite.counters.session_start.*.count","textEditor":true}"`,
 			QueryRange:   "1h",

pkg/services/alerting/alerting.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	//"github.com/grafana/grafana/pkg/bus"
+	"github.com/grafana/grafana/pkg/bus"
 	"github.com/grafana/grafana/pkg/log"
 	m "github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/setting"
@@ -132,6 +133,14 @@ func (this *Scheduler) HandleResponses() {
 		if this.jobs[response.Id] != nil {
 			this.jobs[response.Id].running = false
 		}
+		cmd := m.UpdateAlertStateCommand{
+			AlertId:  response.Id,
+			NewState: response.State,
+		}
+
+		if err := bus.Dispatch(&cmd); err != nil {
+			log.Error(1, "failed to save state", err)
+		}
 	}
 }
 

pkg/services/alerting/executor.go

@@ -34,7 +34,7 @@ func (this *ExecutorImpl) Execute(rule m.AlertRule, responseQueue chan *AlertRes
 	response, err := graphite.GraphiteClient{}.GetSeries(rule)
 
 	if err != nil {
-		responseQueue <- &AlertResult{State: "CRITICAL", Id: rule.Id}
+		responseQueue <- &AlertResult{State: "PENDING", Id: rule.Id}
 	}
 
 	responseQueue <- this.ValidateRule(rule, response)

pkg/services/alerting/graphite/graphite.go

@@ -48,7 +48,7 @@ func (this GraphiteClient) GetSeries(rule m.AlertRule) (m.TimeSeriesSlice, error
 	}
 
 	if res.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf("error!")
+		return nil, fmt.Errorf("expected httpstatus 200, found %d", res.StatusCode)
 	}
 
 	timeSeries := make([]*m.TimeSeries, 0)