df5fc7a2df
Major changes: - Don't generate a patch, instead generate the merged object so it can be used with PUT - Separate tree parsing logic to collate items in a list from the delete / merge / replace / add logic when merging - Use openapi for merge strategy metadata so it works with extensions and version skew - Support multi-field mergekeys when merging lists - Support replace strategy for maps - Reduce complexity of generating order when merging lists - keep the locally defined order and append remote only-items Continue to support: - Explicitly setting fields to null - Merging lists of primitives - Don't randomize ordering when merging lists TODO: - Retain keys - Conflict detection
80 lines
2.5 KiB
Go
80 lines
2.5 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 parse
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import (
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"k8s.io/kubernetes/pkg/kubectl/apply"
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"k8s.io/kubernetes/pkg/kubectl/cmd/util/openapi"
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)
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// ItemVisitor provides an interface for Items to Accept and call
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// the Visit function that corresponds to its actual type.
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type ItemVisitor interface {
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// CreatePrimitiveElement builds an Element for a primitiveItem
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CreatePrimitiveElement(*primitiveItem) (apply.Element, error)
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// CreateListElement builds an Element for a listItem
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CreateListElement(*listItem) (apply.Element, error)
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// CreateMapElement builds an Element for a mapItem
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CreateMapElement(*mapItem) (apply.Element, error)
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// CreateTypeElement builds an Element for a typeItem
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CreateTypeElement(*typeItem) (apply.Element, error)
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}
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// ElementBuildingVisitor creates an Elements from Items
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// An Element combines the values from the Item with the field metadata.
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type ElementBuildingVisitor struct {
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resources openapi.Resources
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}
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// CreatePrimitiveElement creates a primitiveElement
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func (v ElementBuildingVisitor) CreatePrimitiveElement(item *primitiveItem) (apply.Element, error) {
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return v.primitiveElement(item)
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}
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// CreateListElement creates a ListElement
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func (v ElementBuildingVisitor) CreateListElement(item *listItem) (apply.Element, error) {
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meta, err := getFieldMeta(item.GetMeta(), item.Name)
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if err != nil {
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return nil, err
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}
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if meta.GetFieldMergeType() == "merge" {
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return v.mergeListElement(meta, item)
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}
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return v.replaceListElement(meta, item)
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}
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// CreateMapElement creates a mapElement
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func (v ElementBuildingVisitor) CreateMapElement(item *mapItem) (apply.Element, error) {
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meta, err := getFieldMeta(item.GetMeta(), item.Name)
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if err != nil {
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return nil, err
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}
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return v.mapElement(meta, item)
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}
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// CreateTypeElement creates a typeElement
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func (v ElementBuildingVisitor) CreateTypeElement(item *typeItem) (apply.Element, error) {
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meta, err := getFieldMeta(item.GetMeta(), item.Name)
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if err != nil {
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return nil, err
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}
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return v.typeElement(meta, item)
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}
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