tech(alerting): remove unused code

pkg/services/alerting/eval_context.go

@@ -26,7 +26,6 @@ type EvalContext struct {
 	ImagePublicUrl  string
 	ImageOnDiskPath string
 	NoDataFound     bool
-	RetryCount      int
 
 	Ctx context.Context
 }
@@ -107,6 +106,5 @@ func NewEvalContext(alertCtx context.Context, rule *Rule) *EvalContext {
 		Logs:        make([]*ResultLogEntry, 0),
 		EvalMatches: make([]*EvalMatch, 0),
 		log:         log.New("alerting.evalContext"),
-		RetryCount:  0,
 	}
 }

pkg/services/alerting/notifiers/base_test.go

-package notifiers
-
-// import . "github.com/smartystreets/goconvey/convey"
-//
-// func TestBaseNotifier( t *testing.T ) {
-// 	Convey("Parsing base notification state", t, func() {
-//
-// 		Convey("matches", func() {
-// 			json := `
-// 				{
-// 					"states": "critical"
-// 				}`
-//
-// 			settingsJSON, _ := simplejson.NewJson([]byte(json))
-// 			not := NewNotifierBase("ops", "email", settingsJSON)
-// 			So(not.MatchSeverity(m.AlertSeverityCritical), ShouldBeTrue)
-// 		})
-//
-// 		Convey("does not match", func() {
-// 			json := `
-// 				{
-// 					"severityFilter": "critical"
-// 				}`
-//
-// 			settingsJSON, _ := simplejson.NewJson([]byte(json))
-// 			not := NewNotifierBase("ops", "email", settingsJSON)
-// 			So(not.MatchSeverity(m.AlertSeverityWarning), ShouldBeFalse)
-// 		})
-// 	})
-// }

pkg/services/alerting/notifiers/email.go

 package notifiers
 
 import (
+	"encoding/base64"
+	"io/ioutil"
 	"strings"
 
 	"github.com/grafana/grafana/pkg/bus"
@@ -45,6 +47,14 @@ func (this *EmailNotifier) Notify(evalContext *alerting.EvalContext) error {
 		return err
 	}
 
+	imageLink := evalContext.ImagePublicUrl
+	if imageLink == "" {
+		imageBytes, err := ioutil.ReadFile(evalContext.ImageOnDiskPath)
+		if err == nil {
+			imageLink = "data:image/jpg;base64," + base64.StdEncoding.EncodeToString(imageBytes)
+		}
+	}
+
 	cmd := &m.SendEmailCommandSync{
 		SendEmailCommand: m.SendEmailCommand{
 			Data: map[string]interface{}{