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// Copyright 2019 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package fsslice
import (
"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/yaml"
)
var _ yaml.Filter = Filter{}
// Filter ranges over an FsSlice to modify fields on a single object.
// An FsSlice is a range of FieldSpecs. A FieldSpec is a GVK plus a path.
type Filter struct {
// FieldSpecList list of FieldSpecs to set
FsSlice types.FsSlice `yaml:"fsSlice"`
// SetValue is called on each field that matches one of the FieldSpecs
SetValue filtersutil.SetFn
// CreateKind is used to create fields that do not exist
CreateKind yaml.Kind
// CreateTag is used to set the tag if encountering a null field
CreateTag string
}
func (fltr Filter) Filter(obj *yaml.RNode) (*yaml.RNode, error) {
for i := range fltr.FsSlice {
// apply this FieldSpec
// create a new filter for each iteration because they
// store internal state about the field paths
_, err := (&fieldspec.Filter{
FieldSpec: fltr.FsSlice[i],
SetValue: fltr.SetValue,
CreateKind: fltr.CreateKind,
CreateTag: fltr.CreateTag,
}).Filter(obj)
if err != nil {
return nil, err
}
}
return obj, nil
}
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