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// Copyright 2022 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package replicacount
import (
"strconv"
"sigs.k8s.io/kustomize/api/filters/fieldspec"
"sigs.k8s.io/kustomize/api/filters/filtersutil"
"sigs.k8s.io/kustomize/api/types"
"sigs.k8s.io/kustomize/kyaml/kio"
"sigs.k8s.io/kustomize/kyaml/yaml"
)
// Filter updates/sets replicas fields using the fieldSpecs
type Filter struct {
Replica types.Replica `json:"replica,omitempty" yaml:"replica,omitempty"`
FieldSpec types.FieldSpec `json:"fieldSpec,omitempty" yaml:"fieldSpec,omitempty"`
trackableSetter filtersutil.TrackableSetter
}
var _ kio.Filter = Filter{}
var _ kio.TrackableFilter = &Filter{}
// WithMutationTracker registers a callback which will be invoked each time a field is mutated
func (rc *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
rc.trackableSetter.WithMutationTracker(callback)
}
func (rc Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
return kio.FilterAll(yaml.FilterFunc(rc.run)).Filter(nodes)
}
func (rc Filter) run(node *yaml.RNode) (*yaml.RNode, error) {
err := node.PipeE(fieldspec.Filter{
FieldSpec: rc.FieldSpec,
SetValue: rc.set,
CreateKind: yaml.ScalarNode, // replicas is a ScalarNode
CreateTag: yaml.NodeTagInt,
})
return node, err
}
func (rc Filter) set(node *yaml.RNode) error {
return rc.trackableSetter.SetEntry("", strconv.FormatInt(rc.Replica.Count, 10), yaml.NodeTagInt)(node)
}
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