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// Copyright 2020 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package annotations
import (
"sigs.k8s.io/kustomize/api/filters/filtersutil"
"sigs.k8s.io/kustomize/api/filters/fsslice"
"sigs.k8s.io/kustomize/api/types"
"sigs.k8s.io/kustomize/kyaml/kio"
"sigs.k8s.io/kustomize/kyaml/yaml"
)
type annoMap map[string]string
type Filter struct {
// Annotations is the set of annotations to apply to the inputs
Annotations annoMap `yaml:"annotations,omitempty"`
// FsSlice contains the FieldSpecs to locate the namespace field
FsSlice types.FsSlice
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 (f *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
f.trackableSetter.WithMutationTracker(callback)
}
func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
keys := yaml.SortedMapKeys(f.Annotations)
_, err := kio.FilterAll(yaml.FilterFunc(
func(node *yaml.RNode) (*yaml.RNode, error) {
for _, k := range keys {
if err := node.PipeE(fsslice.Filter{
FsSlice: f.FsSlice,
SetValue: f.trackableSetter.SetEntry(
k, f.Annotations[k], yaml.NodeTagString),
CreateKind: yaml.MappingNode, // Annotations are MappingNodes.
CreateTag: yaml.NodeTagMap,
}); err != nil {
return nil, err
}
}
return node, nil
})).Filter(nodes)
return nodes, err
}
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