/*
   Copyright 2014 CoreOS, Inc.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package etcdserver

import (
	"errors"

	etcdErr "github.com/coreos/etcd/error"

	"github.com/coreos/etcd/Godeps/_workspace/src/golang.org/x/net/context"
)

var (
	ErrUnknownMethod = errors.New("etcdserver: unknown method")
	ErrStopped       = errors.New("etcdserver: server stopped")
	ErrIDRemoved     = errors.New("etcdserver: ID removed")
	ErrIDExists      = errors.New("etcdserver: ID exists")
	ErrIDNotFound    = errors.New("etcdserver: ID not found")
	ErrPeerURLexists = errors.New("etcdserver: peerURL exists")
	ErrCanceled      = errors.New("etcdserver: request cancelled")
	ErrTimeout       = errors.New("etcdserver: request timed out")
)

func parseCtxErr(err error) error {
	switch err {
	case context.Canceled:
		return ErrCanceled
	case context.DeadlineExceeded:
		return ErrTimeout
	default:
		return err
	}
}

func isKeyNotFound(err error) bool {
	e, ok := err.(*etcdErr.Error)
	return ok && e.ErrorCode == etcdErr.EcodeKeyNotFound
}