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// Copyright 2021 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package replacement
import (
"bytes"
"log"
"os"
"sigs.k8s.io/kustomize/kyaml/kio"
"sigs.k8s.io/kustomize/kyaml/yaml"
)
func ExampleFilter() {
f := Filter{}
err := yaml.Unmarshal([]byte(`
replacements:
- source:
kind: Foo2
fieldPath: spec.replicas
targets:
- select:
kind: Foo1
fieldPaths:
- spec.replicas`), &f)
if err != nil {
log.Fatal(err)
}
err = kio.Pipeline{
Inputs: []kio.Reader{&kio.ByteReader{Reader: bytes.NewBufferString(`
apiVersion: example.com/v1
kind: Foo1
metadata:
name: instance
spec:
replicas: 3
---
apiVersion: example.com/v1
kind: Foo2
metadata:
name: instance
spec:
replicas: 99
`)}},
Filters: []kio.Filter{f},
Outputs: []kio.Writer{kio.ByteWriter{Writer: os.Stdout}},
}.Execute()
if err != nil {
log.Fatal(err)
}
// Output:
// apiVersion: example.com/v1
// kind: Foo1
// metadata:
// name: instance
// spec:
// replicas: 99
// ---
// apiVersion: example.com/v1
// kind: Foo2
// metadata:
// name: instance
// spec:
// replicas: 99
}
|
