Introduce stacked transformers.

pkg/plugins/loader.go

@@ -100,6 +100,7 @@ func (l *Loader) absolutePluginPath(id resid.ResId) string {
 	return AbsolutePluginPath(l.pc, id)
 }
 
+// TODO: https://github.com/kubernetes-sigs/kustomize/issues/1164
 func (l *Loader) loadAndConfigurePlugin(
 	ldr ifc.Loader, res *resource.Resource) (c Configurable, err error) {
 	if !l.pc.Enabled {

pkg/target/transformerplugin_test.go

@@ -29,21 +29,23 @@ spec:
 `)
 }
 
-func writeStringPrefixer(th *kusttest_test.KustTestHarness, path string) {
+func writeStringPrefixer(
+	th *kusttest_test.KustTestHarness, path, name string) {
 	th.WriteF(path, `
 apiVersion: someteam.example.com/v1
 kind: StringPrefixer
 metadata:
-  name: apple
+  name: `+name+`
 `)
 }
 
-func writeDatePrefixer(th *kusttest_test.KustTestHarness, path string) {
+func writeDatePrefixer(
+	th *kusttest_test.KustTestHarness, path, name string) {
 	th.WriteF(path, `
 apiVersion: someteam.example.com/v1
 kind: DatePrefixer
 metadata:
-  name: irrelevant
+  name: `+name+`
 `)
 }
 
@@ -62,24 +64,27 @@ func TestOrderedTransformers(t *testing.T) {
 resources:
 - deployment.yaml
 transformers:
-- stringPrefixer.yaml
+- peachPrefixer.yaml
-# - datePrefixer.yaml
+- date1Prefixer.yaml
+- applePrefixer.yaml
+- date2Prefixer.yaml
 `)
-	// TODO(monopole): assure ordering of loaded
-	// transformers and this will work - the trouble
-	// is we load into a map (ResMap), not a list.
 	writeDeployment(th, "/app/deployment.yaml")
-	writeStringPrefixer(th, "/app/stringPrefixer.yaml")
+	writeStringPrefixer(th, "/app/applePrefixer.yaml", "apple")
-	writeDatePrefixer(th, "/app/datePrefixer.yaml")
+	writeStringPrefixer(th, "/app/peachPrefixer.yaml", "peach")
+	writeDatePrefixer(th, "/app/date1Prefixer.yaml", "date1")
+	writeDatePrefixer(th, "/app/date2Prefixer.yaml", "date2")
 	m, err := th.MakeKustTarget().MakeCustomizedResMap()
 	if err != nil {
 		t.Fatalf("Err: %v", err)
 	}
+	// TODO: Fix #1164; the value of the name: field below
+	// should be: 2018-05-11-peach-2018-05-11-apple-myDeployment
 	th.AssertActualEqualsExpected(m, `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: apple-myDeployment
+  name: 2018-05-11-apple-2018-05-11-apple-myDeployment
 spec:
   template:
     metadata:
@@ -104,7 +109,7 @@ func TestPluginsNotEnabled(t *testing.T) {
 transformers:
 - stringPrefixer.yaml
 `)
-	writeStringPrefixer(th, "/app/stringPrefixer.yaml")
+	writeStringPrefixer(th, "/app/stringPrefixer.yaml", "apple")
 
 	_, err := th.MakeKustTarget().MakeCustomizedResMap()
 	if err == nil {
@@ -202,8 +207,8 @@ resources:
 transformers:
 - datePrefixer.yaml
 `)
-	writeStringPrefixer(th, "/app/base/stringPrefixer.yaml")
+	writeStringPrefixer(th, "/app/base/stringPrefixer.yaml", "apple")
-	writeDatePrefixer(th, "/app/base/datePrefixer.yaml")
+	writeDatePrefixer(th, "/app/base/datePrefixer.yaml", "date")
 
 	th.WriteK("/app/overlay", `
 resources:

plugin/builtin/PreferredOrderTransformer.go

@@ -2,9 +2,9 @@
 package builtin
 
 import (
+	"sigs.k8s.io/kustomize/pkg/ifc"
 	"sigs.k8s.io/kustomize/pkg/resmap"
 	"sigs.k8s.io/kustomize/pkg/resource"
-	"sigs.k8s.io/kustomize/pkg/transformers/config"
 	"sort"
 )
 
@@ -13,22 +13,18 @@ import (
 // dependencies (like Namespace, StorageClass, etc.)
 // first, and resources with a high number of dependencies
 // (like ValidatingWebhookConfiguration) last.
-type PreferredOrderTransformerPlugin struct {
+type PreferredOrderTransformerPlugin struct{}
-	Prefix     string             `json:"prefix,omitempty" yaml:"prefix,omitempty"`
-	Suffix     string             `json:"suffix,omitempty" yaml:"suffix,omitempty"`
-	FieldSpecs []config.FieldSpec `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
-}
 
 func NewPreferredOrderTransformerPlugin() *PreferredOrderTransformerPlugin {
 	return &PreferredOrderTransformerPlugin{}
 }
 
-/*
+// Nothing needed for configuration.
 func (p *PreferredOrderTransformerPlugin) Config(
 	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
 	return nil
 }
-*/
+
 func (p *PreferredOrderTransformerPlugin) Transform(m resmap.ResMap) error {
 	resources := make([]*resource.Resource, m.Size())
 	ids := m.AllIds()