Annotations: Adds tags endpoint (#36199)

* Annotations: Adds tags endpoint

* Chore: fixes sql  statement

* Refactor: adds count to the api

* Chore: changes after PR comments

* Refactor: changes after PR comments

pkg/api/annotations.go

@@ -288,3 +288,19 @@ func canSave(c *models.ReqContext, repo annotations.Repository, annotationID int
 
 	return nil
 }
+
+func GetAnnotationTags(c *models.ReqContext) response.Response {
+	query := &annotations.TagsQuery{
+		OrgID: c.OrgId,
+		Tag:   c.Query("tag"),
+		Limit: c.QueryInt64("limit"),
+	}
+
+	repo := annotations.GetRepository()
+	result, err := repo.FindTags(query)
+	if err != nil {
+		return response.Error(500, "Failed to find annotation tags", err)
+	}
+
+	return response.JSON(200, util.DynMap{"result": result})
+}

pkg/api/annotations_test.go

@@ -259,6 +259,12 @@ func (repo *fakeAnnotationsRepo) Find(query *annotations.ItemQuery) ([]*annotati
 	annotations := []*annotations.ItemDTO{{Id: 1}}
 	return annotations, nil
 }
+func (repo *fakeAnnotationsRepo) FindTags(query *annotations.TagsQuery) (annotations.FindTagsResult, error) {
+	result := annotations.FindTagsResult{
+		Tags: []*annotations.TagsDTO{},
+	}
+	return result, nil
+}
 
 var fakeAnnoRepo *fakeAnnotationsRepo
 

pkg/api/api.go

@@ -410,6 +410,7 @@ func (hs *HTTPServer) registerRoutes() {
 			annotationsRoute.Put("/:annotationId", bind(dtos.UpdateAnnotationsCmd{}), routing.Wrap(UpdateAnnotation))
 			annotationsRoute.Patch("/:annotationId", bind(dtos.PatchAnnotationsCmd{}), routing.Wrap(PatchAnnotation))
 			annotationsRoute.Post("/graphite", reqEditorRole, bind(dtos.PostGraphiteAnnotationsCmd{}), routing.Wrap(PostGraphiteAnnotation))
+			annotationsRoute.Get("/tags", routing.Wrap(GetAnnotationTags))
 		})
 
 		apiRoute.Post("/frontend-metrics", bind(metrics.PostFrontendMetricsCommand{}), routing.Wrap(hs.PostFrontendMetrics))