func (ctx *Context) generateAncestry(imageId string, parentId string) error {
if parentId == "" {
selfAncestryJson, err := json.Marshal([]string{imageId})
if err != nil {
return err
}
if err := ctx.storage.PutContent(storage.ImageAncestryPath(imageId), selfAncestryJson); err != nil {
return err
}
return nil
}
data, err := ctx.storage.GetContent(storage.ImageAncestryPath(parentId))
if err != nil {
return err
}
var ancestry []string
if err := json.Unmarshal(data, &ancestry); err != nil {
return err
}
newAncestry := []string{imageId}
newAncestry = append(newAncestry, ancestry...)
data, err = json.Marshal(newAncestry)
if err != nil {
return err
}
ctx.storage.PutContent(storage.ImageAncestryPath(imageId), data)
return nil
}
func (ctx *Context) GetImageAncestryHandler(w http.ResponseWriter, r *http.Request) {
imageId := mux.Vars(r)["imageId"]
data, err := ctx.storage.GetContent(storage.ImageAncestryPath(imageId))
if err != nil {
sendResponse(w, "Image not found", 404, nil, false)
return
}
sendResponse(w, data, http.StatusOK, nil, true)
}