k3s/pkg/kubectl/apply/list_element.go

/*
Copyright 2017 The Kubernetes Authors.

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 apply

// ListElement contains the recorded, local and remote values for a field
// of type list
type ListElement struct {
	// FieldMetaImpl contains metadata about the field from openapi
	FieldMetaImpl

	// HasElementData contains whether the field was set
	HasElementData

	// ListElementData contains the value a field was set to
	ListElementData

	// Values contains the combined recorded-local-remote value of each item in the list
	// Present for lists that can be merged only.  Contains the items
	// from each of the 3 lists merged into single Elements using
	// the merge-key.
	Values []Element
}

// Merge implements Element.Merge
func (e ListElement) Merge(v Strategy) (Result, error) {
	return v.MergeList(e)
}

var _ Element = &ListElement{}

// ListElementData contains the recorded, local and remote data for a list
type ListElementData struct {
	// recorded contains the value of the field from the recorded object
	Recorded []interface{}

	// Local contains the value of the field from the recorded object
	Local []interface{}

	// Remote contains the value of the field from the recorded object
	Remote []interface{}
}

// GetRecorded implements Element.GetRecorded
func (e ListElementData) GetRecorded() interface{} {
	// https://golang.org/doc/faq#nil_error
	if e.Recorded == nil {
		return nil
	}
	return e.Recorded
}

// GetLocal implements Element.GetLocal
func (e ListElementData) GetLocal() interface{} {
	// https://golang.org/doc/faq#nil_error
	if e.Local == nil {
		return nil
	}
	return e.Local
}

// GetRemote implements Element.GetRemote
func (e ListElementData) GetRemote() interface{} {
	// https://golang.org/doc/faq#nil_error
	if e.Remote == nil {
		return nil
	}
	return e.Remote
}