101 lines
3 KiB
Go
101 lines
3 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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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 mergepatch
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import (
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"errors"
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"fmt"
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"reflect"
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)
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var (
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ErrBadJSONDoc = errors.New("invalid JSON document")
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ErrNoListOfLists = errors.New("lists of lists are not supported")
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ErrBadPatchFormatForPrimitiveList = errors.New("invalid patch format of primitive list")
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ErrBadPatchFormatForRetainKeys = errors.New("invalid patch format of retainKeys")
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ErrBadPatchFormatForSetElementOrderList = errors.New("invalid patch format of setElementOrder list")
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ErrPatchContentNotMatchRetainKeys = errors.New("patch content doesn't match retainKeys list")
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)
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func ErrNoMergeKey(m map[string]interface{}, k string) error {
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return fmt.Errorf("map: %v does not contain declared merge key: %s", m, k)
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}
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func ErrBadArgType(expected, actual interface{}) error {
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return fmt.Errorf("expected a %s, but received a %s",
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reflect.TypeOf(expected),
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reflect.TypeOf(actual))
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}
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func ErrBadArgKind(expected, actual interface{}) error {
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var expectedKindString, actualKindString string
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if expected == nil {
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expectedKindString = "nil"
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} else {
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expectedKindString = reflect.TypeOf(expected).Kind().String()
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}
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if actual == nil {
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actualKindString = "nil"
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} else {
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actualKindString = reflect.TypeOf(actual).Kind().String()
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}
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return fmt.Errorf("expected a %s, but received a %s", expectedKindString, actualKindString)
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}
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func ErrBadPatchType(t interface{}, m map[string]interface{}) error {
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return fmt.Errorf("unknown patch type: %s in map: %v", t, m)
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}
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// IsPreconditionFailed returns true if the provided error indicates
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// a precondition failed.
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func IsPreconditionFailed(err error) bool {
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_, ok := err.(ErrPreconditionFailed)
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return ok
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}
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type ErrPreconditionFailed struct {
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message string
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}
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func NewErrPreconditionFailed(target map[string]interface{}) ErrPreconditionFailed {
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s := fmt.Sprintf("precondition failed for: %v", target)
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return ErrPreconditionFailed{s}
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}
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func (err ErrPreconditionFailed) Error() string {
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return err.message
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}
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type ErrConflict struct {
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message string
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}
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func NewErrConflict(patch, current string) ErrConflict {
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s := fmt.Sprintf("patch:\n%s\nconflicts with changes made from original to current:\n%s\n", patch, current)
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return ErrConflict{s}
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}
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func (err ErrConflict) Error() string {
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return err.message
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}
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// IsConflict returns true if the provided error indicates
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// a conflict between the patch and the current configuration.
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func IsConflict(err error) bool {
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_, ok := err.(ErrConflict)
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return ok
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}
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