feat(annotations): added support to show grafana stored annotations in graphs, #5982

pkg/api/annotations.go

@@ -0,0 +1,42 @@
+package api
+
+import (
+	"github.com/grafana/grafana/pkg/api/dtos"
+	"github.com/grafana/grafana/pkg/middleware"
+	"github.com/grafana/grafana/pkg/services/annotations"
+)
+
+func GetAnnotations(c *middleware.Context) Response {
+
+	query := &annotations.ItemQuery{
+		From:  c.QueryInt64("from") / 1000,
+		To:    c.QueryInt64("to") / 1000,
+		Type:  annotations.ItemType(c.Query("type")),
+		OrgId: c.OrgId,
+		Limit: c.QueryInt64("limit"),
+	}
+
+	repo := annotations.GetRepository()
+
+	items, err := repo.Find(query)
+	if err != nil {
+		return ApiError(500, "Failed to get annotations", err)
+	}
+
+	result := make([]dtos.Annotation, 0)
+
+	for _, item := range items {
+		result = append(result, dtos.Annotation{
+			AlertId:   item.AlertId,
+			Time:      item.Epoch * 1000,
+			Data:      item.Data,
+			NewState:  item.NewState,
+			PrevState: item.PrevState,
+			Text:      item.Text,
+			Metric:    item.Metric,
+			Title:     item.Title,
+		})
+	}
+
+	return Json(200, result)
+}