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// Copyright (c) 2014, Suryandaru Triandana <syndtr@gmail.com>
// All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Package errors provides common error types used throughout leveldb.
package errors
import (
"errors"
"fmt"
"github.com/syndtr/goleveldb/leveldb/storage"
"github.com/syndtr/goleveldb/leveldb/util"
)
// Common errors.
var (
ErrNotFound = New("leveldb: not found")
ErrReleased = util.ErrReleased
ErrHasReleaser = util.ErrHasReleaser
)
// New returns an error that formats as the given text.
func New(text string) error {
return errors.New(text)
}
// ErrCorrupted is the type that wraps errors that indicate corruption in
// the database.
type ErrCorrupted struct {
Fd storage.FileDesc
Err error
}
func (e *ErrCorrupted) Error() string {
if !e.Fd.Zero() {
return fmt.Sprintf("%v [file=%v]", e.Err, e.Fd)
}
return e.Err.Error()
}
// NewErrCorrupted creates new ErrCorrupted error.
func NewErrCorrupted(fd storage.FileDesc, err error) error {
return &ErrCorrupted{fd, err}
}
// IsCorrupted returns a boolean indicating whether the error is indicating
// a corruption.
func IsCorrupted(err error) bool {
switch err.(type) {
case *ErrCorrupted:
return true
case *storage.ErrCorrupted:
return true
}
return false
}
// ErrMissingFiles is the type that indicating a corruption due to missing
// files. ErrMissingFiles always wrapped with ErrCorrupted.
type ErrMissingFiles struct {
Fds []storage.FileDesc
}
func (e *ErrMissingFiles) Error() string { return "file missing" }
// SetFd sets 'file info' of the given error with the given file.
// Currently only ErrCorrupted is supported, otherwise will do nothing.
func SetFd(err error, fd storage.FileDesc) error {
switch x := err.(type) {
case *ErrCorrupted:
x.Fd = fd
return x
}
return err
}
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