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https://github.com/k3s-io/kubernetes.git
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90 lines
2.6 KiB
Go
90 lines
2.6 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/kube-openapi/pkg/util/proto"
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"k8s.io/kubernetes/pkg/kubectl/apply"
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)
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// mapElement builds a new mapElement from a mapItem
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func (v ElementBuildingVisitor) mapElement(meta apply.FieldMetaImpl, item *mapItem) (*apply.MapElement, error) {
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// Function to return schema type of the map values
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var fn schemaFn = func(string) proto.Schema {
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// All map values share the same schema
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if item.Map != nil && item.Map.SubType != nil {
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return item.Map.SubType
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}
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return nil
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}
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// Collect same fields from multiple maps into a map of elements
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values, err := v.createMapValues(fn, meta, item.MapElementData)
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if err != nil {
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return nil, err
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}
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// Return the result
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return &apply.MapElement{
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FieldMetaImpl: meta,
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MapElementData: item.MapElementData,
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Values: values,
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}, nil
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}
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// schemaFn returns the schema for a field or map value based on its name or key
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type schemaFn func(key string) proto.Schema
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// createMapValues combines the recorded, local and remote values from
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// data into a map of elements.
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func (v ElementBuildingVisitor) createMapValues(
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schemaFn schemaFn,
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meta apply.FieldMetaImpl,
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data apply.MapElementData) (map[string]apply.Element, error) {
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// Collate each key in the map
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values := map[string]apply.Element{}
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for _, key := range keysUnion(data.GetRecordedMap(), data.GetLocalMap(), data.GetRemoteMap()) {
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combined := apply.RawElementData{}
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if recorded, recordedSet := nilSafeLookup(key, data.GetRecordedMap()); recordedSet {
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combined.SetRecorded(recorded)
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}
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if local, localSet := nilSafeLookup(key, data.GetLocalMap()); localSet {
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combined.SetLocal(local)
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}
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if remote, remoteSet := nilSafeLookup(key, data.GetRemoteMap()); remoteSet {
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combined.SetRemote(remote)
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}
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// Create an item for the field
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field, err := v.getItem(schemaFn(key), key, combined)
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if err != nil {
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return nil, err
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}
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// Build the element for this field
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element, err := field.CreateElement(v)
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if err != nil {
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return nil, err
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}
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// Add the field element to the map
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values[key] = element
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}
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return values, nil
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}
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