mirror of
https://github.com/kubernetes-sigs/kustomize.git
synced 2026-05-17 18:25:26 +00:00
84 lines
2.6 KiB
Go
84 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 types
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import (
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"strings"
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"sigs.k8s.io/kustomize/pkg/gvk"
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)
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// Var represents a variable whose value will be sourced
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// from a field in a Kubernetes object.
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type Var struct {
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// Value of identifier name e.g. FOO used in container args, annotations
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// Appears in pod template as $(FOO)
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Name string `json:"name" yaml:"name"`
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// ObjRef must refer to a Kubernetes resource under the
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// purview of this kustomization. ObjRef should use the
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// raw name of the object (the name specified in its YAML,
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// before addition of a namePrefix and a nameSuffix).
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ObjRef Target `json:"objref" yaml:"objref"`
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// FieldRef refers to the field of the object referred to by
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// ObjRef whose value will be extracted for use in
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// replacing $(FOO).
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// If unspecified, this defaults to fieldPath: metadata.name
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FieldRef FieldSelector `json:"fieldref,omitempty" yaml:"fieldref,omitempty"`
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}
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// Target refers to a kubernetes object by Group, Version, Kind and Name
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// gvk.Gvk contains Group, Version and Kind
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// APIVersion is added to keep the backward compatibility of using ObjectReference
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// for Var.ObjRef
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type Target struct {
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APIVersion string `json:"apiVersion,omitempty" yaml:"apiVersion,omitempty"`
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gvk.Gvk `json:",inline,omitempty" yaml:",inline,omitempty"`
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Name string `json:"name" yaml:"name"`
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}
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// FieldSelector contains the fieldPath to an object field, such as metadata.name
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// This struct is added to keep the backward compatibility of using ObjectFieldSelector
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// for Var.FieldRef
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type FieldSelector struct {
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FieldPath string `json:"fieldPath,omitempty" yaml:"fieldPath,omitempty"`
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}
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// Defaulting sets reference to field used by default.
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func (v *Var) Defaulting() {
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if v.FieldRef.FieldPath == "" {
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v.FieldRef.FieldPath = "metadata.name"
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}
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}
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// GVK returns the Gvk object in Target
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func (t *Target) GVK() gvk.Gvk {
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if t.APIVersion == "" {
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return t.Gvk
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}
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versions := strings.Split(t.APIVersion, "/")
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if len(versions) == 2 {
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t.Group = versions[0]
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t.Version = versions[1]
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}
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if len(versions) == 1 {
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t.Version = versions[0]
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}
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return t.Gvk
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}
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