mirror of
https://github.com/kubernetes-sigs/kustomize.git
synced 2026-05-17 18:25:26 +00:00
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
// Code generated by pluginator on ReplicaCountTransformer; DO NOT EDIT.
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// pluginator {unknown 1970-01-01T00:00:00Z }
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package builtins
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import (
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"fmt"
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"sigs.k8s.io/kustomize/api/transform"
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"sigs.k8s.io/kustomize/api/resid"
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"sigs.k8s.io/kustomize/api/resmap"
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"sigs.k8s.io/kustomize/api/types"
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"sigs.k8s.io/yaml"
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)
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// Find matching replicas declarations and replace the count.
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// Eases the kustomization configuration of replica changes.
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type ReplicaCountTransformerPlugin struct {
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Replica types.Replica `json:"replica,omitempty" yaml:"replica,omitempty"`
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FieldSpecs []types.FieldSpec `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
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}
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func (p *ReplicaCountTransformerPlugin) Config(
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_ *resmap.PluginHelpers, c []byte) (err error) {
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p.Replica = types.Replica{}
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p.FieldSpecs = nil
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return yaml.Unmarshal(c, p)
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}
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func (p *ReplicaCountTransformerPlugin) Transform(m resmap.ResMap) error {
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found := false
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for i, replicaSpec := range p.FieldSpecs {
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matcher := p.createMatcher(i)
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matchOriginal := m.GetMatchingResourcesByOriginalId(matcher)
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matchCurrent := m.GetMatchingResourcesByCurrentId(matcher)
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for _, res := range append(matchOriginal, matchCurrent...) {
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found = true
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err := transform.MutateField(
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res.Map(), replicaSpec.PathSlice(),
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replicaSpec.CreateIfNotPresent, p.addReplicas)
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if err != nil {
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return err
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}
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}
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}
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if !found {
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gvks := make([]string, len(p.FieldSpecs))
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for i, replicaSpec := range p.FieldSpecs {
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gvks[i] = replicaSpec.Gvk.String()
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}
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return fmt.Errorf("resource with name %s does not match a config with the following GVK %v",
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p.Replica.Name, gvks)
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}
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return nil
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}
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// Match Replica.Name and FieldSpec
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func (p *ReplicaCountTransformerPlugin) createMatcher(i int) resmap.IdMatcher {
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return func(r resid.ResId) bool {
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return r.Name == p.Replica.Name &&
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r.Gvk.IsSelected(&p.FieldSpecs[i].Gvk)
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}
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}
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func (p *ReplicaCountTransformerPlugin) addReplicas(in interface{}) (interface{}, error) {
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switch m := in.(type) {
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case int64:
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// Was already in the field.
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case map[string]interface{}:
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if len(m) != 0 {
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// A map was already in the replicas field, don't want to
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// discard this data silently.
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return nil, fmt.Errorf("%#v is expected to be %T", in, m)
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}
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// Just got added, default type is map, but we can return anything.
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default:
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return nil, fmt.Errorf("%#v is expected to be %T", in, m)
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}
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return p.Replica.Count, nil
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}
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func NewReplicaCountTransformerPlugin() resmap.TransformerPlugin {
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return &ReplicaCountTransformerPlugin{}
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}
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