cmd/config run scoping and path defaulting

- default the path and index for Resources generated by functions
- scope functions to only operate against resources in subdirectories

kyaml/kio/kioutil/kioutil_test.go

@@ -13,6 +13,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"sigs.k8s.io/kustomize/kyaml/kio"
 	"sigs.k8s.io/kustomize/kyaml/kio/kioutil"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 func TestSortNodes_moreThan10(t *testing.T) {
@@ -75,3 +76,257 @@ y: z
 
 	assert.Equal(t, strings.TrimSpace(input), strings.TrimSpace(actual.String()))
 }
+
+func TestDefaultPathAnnotation(t *testing.T) {
+	var tests = []struct {
+		dir      string
+		input    string // input
+		expected string // expected result
+		name     string
+	}{
+		{
+			`foo`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+  annotations:
+    config.kubernetes.io/path: 'foo/b/bar_a.yaml'
+`, `with namespace`},
+		{
+			`foo`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  annotations:
+    config.kubernetes.io/path: 'foo/bar_a.yaml'
+`, `without namespace`},
+
+		{
+			``,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+  annotations:
+    config.kubernetes.io/path: 'b/bar_a.yaml'
+`, `without dir`},
+		{
+			``,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+  annotations:
+    config.kubernetes.io/path: 'a/b.yaml'
+`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+  annotations:
+    config.kubernetes.io/path: 'a/b.yaml'
+`, `skip`},
+	}
+
+	for _, s := range tests {
+		n := yaml.MustParse(s.input)
+		err := kioutil.DefaultPathAnnotation(s.dir, []*yaml.RNode{n})
+		if !assert.NoError(t, err, s.name) {
+			t.FailNow()
+		}
+		if !assert.Equal(t, s.expected, n.MustString(), s.name) {
+			t.FailNow()
+		}
+	}
+}
+
+func TestDefaultPathAndIndexAnnotation(t *testing.T) {
+	var tests = []struct {
+		dir      string
+		input    string // input
+		expected string // expected result
+		name     string
+	}{
+		{
+			`foo`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+  annotations:
+    config.kubernetes.io/path: 'foo/b/bar_a.yaml'
+    config.kubernetes.io/index: '0'
+`, `with namespace`},
+		{
+			`foo`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  annotations:
+    config.kubernetes.io/path: 'foo/bar_a.yaml'
+    config.kubernetes.io/index: '0'
+`, `without namespace`},
+
+		{
+			``,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+  annotations:
+    config.kubernetes.io/path: 'b/bar_a.yaml'
+    config.kubernetes.io/index: '0'
+`, `without dir`},
+		{
+			``,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+  annotations:
+    config.kubernetes.io/path: 'a/b.yaml'
+    config.kubernetes.io/index: '5'
+`,
+			`apiVersion: v1
+kind: Bar
+metadata:
+  name: a
+  namespace: b
+  annotations:
+    config.kubernetes.io/path: 'a/b.yaml'
+    config.kubernetes.io/index: '5'
+`, `skip`},
+	}
+
+	for _, s := range tests {
+		out := &bytes.Buffer{}
+		r := kio.ByteReadWriter{
+			Reader:                bytes.NewBufferString(s.input),
+			Writer:                out,
+			KeepReaderAnnotations: true,
+			OmitReaderAnnotations: true,
+		}
+		n, err := r.Read()
+		if !assert.NoError(t, err, s.name) {
+			t.FailNow()
+		}
+		if !assert.NoError(t, kioutil.DefaultPathAndIndexAnnotation(s.dir, n), s.name) {
+			t.FailNow()
+		}
+		if !assert.NoError(t, r.Write(n), s.name) {
+			t.FailNow()
+		}
+		if !assert.Equal(t, s.expected, out.String(), s.name) {
+			t.FailNow()
+		}
+	}
+}
+
+func TestCreatePathAnnotationValue(t *testing.T) {
+	var tests = []struct {
+		dir      string
+		meta     yaml.ResourceMeta // input
+		expected string            // expected result
+		name     string
+	}{
+		{
+			`dir`,
+			yaml.ResourceMeta{Kind: "foo",
+				APIVersion: "apps/v1",
+				ObjectMeta: yaml.ObjectMeta{Name: "bar", Namespace: "baz"},
+			},
+			`dir/baz/foo_bar.yaml`, `with namespace`,
+		},
+		{
+			``,
+			yaml.ResourceMeta{Kind: "foo",
+				APIVersion: "apps/v1",
+				ObjectMeta: yaml.ObjectMeta{Name: "bar", Namespace: "baz"},
+			},
+			`baz/foo_bar.yaml`, `without dir`,
+		},
+		{
+			`dir`,
+			yaml.ResourceMeta{Kind: "foo",
+				APIVersion: "apps/v1",
+				ObjectMeta: yaml.ObjectMeta{Name: "bar"},
+			},
+			`dir/foo_bar.yaml`, `without namespace`,
+		},
+		{
+			``,
+			yaml.ResourceMeta{Kind: "foo",
+				APIVersion: "apps/v1",
+				ObjectMeta: yaml.ObjectMeta{Name: "bar"},
+			},
+			`foo_bar.yaml`, `without namespace or dir`,
+		},
+		{
+			``,
+			yaml.ResourceMeta{Kind: "foo",
+				APIVersion: "apps/v1",
+				ObjectMeta: yaml.ObjectMeta{},
+			},
+			`foo_.yaml`, `without namespace, dir or name`,
+		},
+		{
+			``,
+			yaml.ResourceMeta{
+				APIVersion: "apps/v1",
+				ObjectMeta: yaml.ObjectMeta{},
+			},
+			`_.yaml`, `without any`,
+		},
+	}
+
+	for _, s := range tests {
+		p := kioutil.CreatePathAnnotationValue(s.dir, s.meta)
+		if !assert.Equal(t, s.expected, p, s.name) {
+			t.FailNow()
+		}
+	}
+}