/
error.go
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/
error.go
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// Copyright © 2019 Genome Research Limited
// Author: Sendu Bala <sb10@sanger.ac.uk>.
//
// This file is part of wr.
//
// wr is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// wr is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with wr. If not, see <http://www.gnu.org/licenses/>.
package limiter
// This file contains error handling code.
import (
"fmt"
)
// limiter has some typical errors
const (
ErrNotIncremented = "decrement attempted on a limit group that had not been incremented"
ErrAtLimit = "increment attempted on a limit group already at its limit"
)
// Error records an error and the operation, request and protector that caused it.
type Error struct {
Group string // the limit's Name
Op string // name of the method
Err string // one of our Err constants
}
func (e Error) Error() string {
return fmt.Sprintf("limiter(%s) %s(): %s", e.Group, e.Op, e.Err)
}