namespace

Documentation

Overview

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

Special cases for known Kubernetes resources have been hardcoded in addition to those defined by the FsSlice.

Index

• type Filter
  • func (ns Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error)

Examples

• Filter

Types

type Filter

type Filter struct {
	// Namespace is the namespace to apply to the inputs
	Namespace string `yaml:"namespace,omitempty"`

	// FsSlice contains the FieldSpecs to locate the namespace field
	FsSlice types.FsSlice `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
}

Example

package main

import (
	"bytes"
	"log"
	"os"

	"sigs.k8s.io/kustomize/api/filters/namespace"
	"sigs.k8s.io/kustomize/api/internal/plugins/builtinconfig"
	"sigs.k8s.io/kustomize/kyaml/kio"
)

func main() {
	fss := builtinconfig.MakeDefaultConfig().NameSpace
	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
  namespace: bar
`)}},
		Filters: []kio.Filter{namespace.Filter{Namespace: "app", 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
  namespace: app
---
apiVersion: example.com/v1
kind: Bar
metadata:
  name: instance
  namespace: app

func (Filter) Filter

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