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annotations.go
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annotations.go
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package api
import (
"strings"
"github.com/grafana/grafana/pkg/api/dtos"
"github.com/grafana/grafana/pkg/components/simplejson"
m "github.com/grafana/grafana/pkg/models"
"github.com/grafana/grafana/pkg/services/annotations"
"github.com/grafana/grafana/pkg/services/guardian"
"github.com/grafana/grafana/pkg/util"
)
func GetAnnotations(c *m.ReqContext) Response {
query := &annotations.ItemQuery{
From: c.QueryInt64("from"),
To: c.QueryInt64("to"),
OrgId: c.OrgId,
UserId: c.QueryInt64("userId"),
AlertId: c.QueryInt64("alertId"),
DashboardId: c.QueryInt64("dashboardId"),
PanelId: c.QueryInt64("panelId"),
Limit: c.QueryInt64("limit"),
Tags: c.QueryStrings("tags"),
Type: c.Query("type"),
}
repo := annotations.GetRepository()
items, err := repo.Find(query)
if err != nil {
return Error(500, "Failed to get annotations", err)
}
for _, item := range items {
if item.Email != "" {
item.AvatarUrl = dtos.GetGravatarUrl(item.Email)
}
}
return JSON(200, items)
}
type CreateAnnotationError struct {
message string
}
func (e *CreateAnnotationError) Error() string {
return e.message
}
func PostAnnotation(c *m.ReqContext, cmd dtos.PostAnnotationsCmd) Response {
if canSave, err := canSaveByDashboardID(c, cmd.DashboardId); err != nil || !canSave {
return dashboardGuardianResponse(err)
}
repo := annotations.GetRepository()
if cmd.Text == "" {
err := &CreateAnnotationError{"text field should not be empty"}
return Error(500, "Failed to save annotation", err)
}
item := annotations.Item{
OrgId: c.OrgId,
UserId: c.UserId,
DashboardId: cmd.DashboardId,
PanelId: cmd.PanelId,
Epoch: cmd.Time,
Text: cmd.Text,
Data: cmd.Data,
Tags: cmd.Tags,
}
if err := repo.Save(&item); err != nil {
return Error(500, "Failed to save annotation", err)
}
startID := item.Id
// handle regions
if cmd.IsRegion {
item.RegionId = startID
if item.Data == nil {
item.Data = simplejson.New()
}
if err := repo.Update(&item); err != nil {
return Error(500, "Failed set regionId on annotation", err)
}
item.Id = 0
item.Epoch = cmd.TimeEnd
if err := repo.Save(&item); err != nil {
return Error(500, "Failed save annotation for region end time", err)
}
return JSON(200, util.DynMap{
"message": "Annotation added",
"id": startID,
"endId": item.Id,
})
}
return JSON(200, util.DynMap{
"message": "Annotation added",
"id": startID,
})
}
func formatGraphiteAnnotation(what string, data string) string {
text := what
if data != "" {
text = text + "\n" + data
}
return text
}
func PostGraphiteAnnotation(c *m.ReqContext, cmd dtos.PostGraphiteAnnotationsCmd) Response {
repo := annotations.GetRepository()
if cmd.What == "" {
err := &CreateAnnotationError{"what field should not be empty"}
return Error(500, "Failed to save Graphite annotation", err)
}
text := formatGraphiteAnnotation(cmd.What, cmd.Data)
// Support tags in prior to Graphite 0.10.0 format (string of tags separated by space)
var tagsArray []string
switch tags := cmd.Tags.(type) {
case string:
if tags != "" {
tagsArray = strings.Split(tags, " ")
} else {
tagsArray = []string{}
}
case []interface{}:
for _, t := range tags {
if tagStr, ok := t.(string); ok {
tagsArray = append(tagsArray, tagStr)
} else {
err := &CreateAnnotationError{"tag should be a string"}
return Error(500, "Failed to save Graphite annotation", err)
}
}
default:
err := &CreateAnnotationError{"unsupported tags format"}
return Error(500, "Failed to save Graphite annotation", err)
}
item := annotations.Item{
OrgId: c.OrgId,
UserId: c.UserId,
Epoch: cmd.When * 1000,
Text: text,
Tags: tagsArray,
}
if err := repo.Save(&item); err != nil {
return Error(500, "Failed to save Graphite annotation", err)
}
return JSON(200, util.DynMap{
"message": "Graphite annotation added",
"id": item.Id,
})
}
func UpdateAnnotation(c *m.ReqContext, cmd dtos.UpdateAnnotationsCmd) Response {
annotationID := c.ParamsInt64(":annotationId")
repo := annotations.GetRepository()
if resp := canSave(c, repo, annotationID); resp != nil {
return resp
}
item := annotations.Item{
OrgId: c.OrgId,
UserId: c.UserId,
Id: annotationID,
Epoch: cmd.Time,
Text: cmd.Text,
Tags: cmd.Tags,
}
if err := repo.Update(&item); err != nil {
return Error(500, "Failed to update annotation", err)
}
if cmd.IsRegion {
itemRight := item
itemRight.RegionId = item.Id
itemRight.Epoch = cmd.TimeEnd
// We don't know id of region right event, so set it to 0 and find then using query like
// ... WHERE region_id = <item.RegionId> AND id != <item.RegionId> ...
itemRight.Id = 0
if err := repo.Update(&itemRight); err != nil {
return Error(500, "Failed to update annotation for region end time", err)
}
}
return Success("Annotation updated")
}
func DeleteAnnotations(c *m.ReqContext, cmd dtos.DeleteAnnotationsCmd) Response {
repo := annotations.GetRepository()
err := repo.Delete(&annotations.DeleteParams{
OrgId: c.OrgId,
Id: cmd.AnnotationId,
RegionId: cmd.RegionId,
DashboardId: cmd.DashboardId,
PanelId: cmd.PanelId,
})
if err != nil {
return Error(500, "Failed to delete annotations", err)
}
return Success("Annotations deleted")
}
func DeleteAnnotationByID(c *m.ReqContext) Response {
repo := annotations.GetRepository()
annotationID := c.ParamsInt64(":annotationId")
if resp := canSave(c, repo, annotationID); resp != nil {
return resp
}
err := repo.Delete(&annotations.DeleteParams{
OrgId: c.OrgId,
Id: annotationID,
})
if err != nil {
return Error(500, "Failed to delete annotation", err)
}
return Success("Annotation deleted")
}
func DeleteAnnotationRegion(c *m.ReqContext) Response {
repo := annotations.GetRepository()
regionID := c.ParamsInt64(":regionId")
if resp := canSave(c, repo, regionID); resp != nil {
return resp
}
err := repo.Delete(&annotations.DeleteParams{
OrgId: c.OrgId,
RegionId: regionID,
})
if err != nil {
return Error(500, "Failed to delete annotation region", err)
}
return Success("Annotation region deleted")
}
func canSaveByDashboardID(c *m.ReqContext, dashboardID int64) (bool, error) {
if dashboardID == 0 && !c.SignedInUser.HasRole(m.ROLE_EDITOR) {
return false, nil
}
if dashboardID != 0 {
guard := guardian.New(dashboardID, c.OrgId, c.SignedInUser)
if canEdit, err := guard.CanEdit(); err != nil || !canEdit {
return false, err
}
}
return true, nil
}
func canSave(c *m.ReqContext, repo annotations.Repository, annotationID int64) Response {
items, err := repo.Find(&annotations.ItemQuery{AnnotationId: annotationID, OrgId: c.OrgId})
if err != nil || len(items) == 0 {
return Error(500, "Could not find annotation to update", err)
}
dashboardID := items[0].DashboardId
if canSave, err := canSaveByDashboardID(c, dashboardID); err != nil || !canSave {
return dashboardGuardianResponse(err)
}
return nil
}