labels

Documentation

Overview

Package labels contains a kio.Filter implementation of the kustomize labels transformer.

Index

• type Filter
  • func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error)
  • func (f *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode))

Examples

• Filter

Types

type Filter

type Filter struct {
	// Labels is the set of labels to apply to the inputs
	Labels labelMap `yaml:"labels,omitempty"`

	// FsSlice identifies the label fields.
	FsSlice types.FsSlice
	// contains filtered or unexported fields
}

Filter sets labels.

Example

fss := builtinconfig.MakeDefaultConfig().CommonLabels
err := kio.Pipeline{
	Inputs: []kio.Reader{&kio.ByteReader{Reader: bytes.NewBufferString(`
apiVersion: example.com/v1
kind: Foo
metadata:
  name: instance
---
apiVersion: example.com/v1
kind: Bar
metadata:
  name: instance
`)}},
	Filters: []kio.Filter{Filter{
		Labels: map[string]string{
			"foo": "bar",
		},
		FsSlice: fss,
	}},
	Outputs: []kio.Writer{kio.ByteWriter{Writer: os.Stdout}},
}.Execute()
if err != nil {
	log.Fatal(err)
}

Output:

apiVersion: example.com/v1
kind: Foo
metadata:
  name: instance
  labels:
    foo: bar
---
apiVersion: example.com/v1
kind: Bar
metadata:
  name: instance
  labels:
    foo: bar

func (Filter) Filter

func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error)

func (*Filter) WithMutationTracker

func (f *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode))

WithMutationTracker registers a callback which will be invoked each time a field is mutated