api/healing.go
func healingHistoryHandler(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	if !permission.Check(t, permission.PermHealingRead) {
		return permission.ErrUnauthorized
	}
	filter := r.URL.Query().Get("filter")
	if filter != "" && filter != "node" && filter != "container" {
		return &tsuruErrors.HTTP{
			Code:    http.StatusBadRequest,
			Message: "invalid filter, possible values are 'node' or 'container'",
		}
	}
	history, err := healer.ListHealingHistory(filter)
	if err != nil {
		return err
	}
	if len(history) == 0 {
		w.WriteHeader(http.StatusNoContent)
		return nil
	}
	w.Header().Set("Content-Type", "application/json")
	return json.NewEncoder(w).Encode(history)
}
func healingHistoryHandler(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	if !permission.Check(t, permission.PermHealingRead) {
		return permission.ErrUnauthorized
	}
	filter := r.URL.Query().Get("filter")
	if filter != "" && filter != "node" && filter != "container" {
		return &tsuruErrors.HTTP{
			Code:    http.StatusBadRequest,
			Message: "invalid filter, possible values are 'node' or 'container'",
		}
	}
	history, err := healer.ListHealingHistory(filter)
	if err != nil {
		return err
	}
	if len(history) == 0 {
		w.WriteHeader(http.StatusNoContent)
		return nil
	}
	w.Header().Set("Content-Type", "application/json")
	return json.NewEncoder(w).Encode(history)
}
// title: docker healing history
// path: /docker/healing
// method: GET
// produce: application/json
// responses:
//   200: Ok
//   204: No content
//   400: Invalid data
//   401: Unauthorized