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https://github.com/optim-enterprises-bv/kubernetes.git
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107 lines
2.8 KiB
Go
107 lines
2.8 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package storage
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import "fmt"
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const (
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ErrCodeKeyNotFound int = iota + 1
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ErrCodeKeyExists
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ErrCodeResourceVersionConflicts
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ErrCodeUnreachable
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)
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var errCodeToMessage = map[int]string{
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ErrCodeKeyNotFound: "key not found",
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ErrCodeKeyExists: "key exists",
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ErrCodeResourceVersionConflicts: "resource version conflicts",
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ErrCodeUnreachable: "server unreachable",
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}
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func NewKeyNotFoundError(key string, rv int64) *StorageError {
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return &StorageError{
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Code: ErrCodeKeyNotFound,
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Key: key,
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ResourceVersion: rv,
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}
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}
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func NewKeyExistsError(key string, rv int64) *StorageError {
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return &StorageError{
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Code: ErrCodeKeyExists,
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Key: key,
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ResourceVersion: rv,
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}
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}
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func NewResourceVersionConflictsError(key string, rv int64) *StorageError {
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return &StorageError{
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Code: ErrCodeResourceVersionConflicts,
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Key: key,
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ResourceVersion: rv,
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}
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}
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func NewUnreachableError(key string, rv int64) *StorageError {
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return &StorageError{
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Code: ErrCodeUnreachable,
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Key: key,
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ResourceVersion: rv,
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}
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}
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type StorageError struct {
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Code int
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Key string
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ResourceVersion int64
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}
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func (e *StorageError) Error() string {
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return fmt.Sprintf("StorageError: %s, Code: %d, Key: %s, ResourceVersion: %d",
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errCodeToMessage[e.Code], e.Code, e.Key, e.ResourceVersion)
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}
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// IsNotFound returns true if and only if err is "key" not found error.
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func IsNotFound(err error) bool {
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return isErrCode(err, ErrCodeKeyNotFound)
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}
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// IsNodeExist returns true if and only if err is an node already exist error.
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func IsNodeExist(err error) bool {
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return isErrCode(err, ErrCodeKeyExists)
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}
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// IsUnreachable returns true if and only if err indicates the server could not be reached.
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func IsUnreachable(err error) bool {
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return isErrCode(err, ErrCodeUnreachable)
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}
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// IsTestFailed returns true if and only if err is a write conflict.
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func IsTestFailed(err error) bool {
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return isErrCode(err, ErrCodeResourceVersionConflicts)
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}
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func isErrCode(err error, code int) bool {
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if err == nil {
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return false
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}
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if e, ok := err.(*StorageError); ok {
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return e.Code == code
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}
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return false
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}
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