update go.mod for release

Skip writing to unedited files

.travis.yml

@@ -1,43 +0,0 @@
-os:
-  - linux
-  - osx
-# TODO: Speed up the slowness of the osx travis runs
-# Maybe cache brew installs?
-#
-# TODO: Uncomment when some gets the tests running on Windows.
-#  - windows
-
-addons:
-  apt:
-    packages:
-    - tree
-  homebrew:
-    packages:
-    - tree
-    update: true
-
-# Only clone the most recent commit.
-git:
-  depth: 1
-
-language: go
-
-go:
-  - "1.13"
-
-go_import_path: sigs.k8s.io/kustomize
-
-before_install:
-  - source ./travis/consider-early-travis-exit.sh
-
-# Skip the install process; let pre-commit.sh do it.
-install: true
-
-script:
-  - make verify-kustomize
-  - ./travis/kyaml-pre-commit.sh
-  - ./travis/check-go-mod.sh
-
-# TBD. Suppressing for now.
-notifications:
-  email: false

Makefile

@@ -22,7 +22,9 @@ verify-kustomize: \
 .PHONY: prow-presubmit-check
 prow-presubmit-check: \
 	lint-kustomize \
-	test-unit-kustomize-all
+	test-unit-kustomize-all \
+	test-unit-cmd-all \
+	test-go-mod
 
 .PHONY: verify-kustomize-e2e
 verify-kustomize-e2e: test-examples-e2e-kustomize
@@ -33,12 +35,12 @@ verify-kustomize-e2e: test-examples-e2e-kustomize
 # since everything uses the same implicit GOPATH.
 # This installs in a temp dir to avoid overwriting someone else's
 # linter, then installs in MYGOBIN with a new name.
-# Version pinned by api/go.mod
+# Version pinned by hack/go.mod
 $(MYGOBIN)/golangci-lint-kustomize:
 	( \
 		set -e; \
-		export GOBIN=$$(mktemp -d) \
-		cd api; \
+		export GOBIN=$$(mktemp -d); \
+		cd hack; \
 		GO111MODULE=on go install github.com/golangci/golangci-lint/cmd/golangci-lint; \
 		mv $$GOBIN/golangci-lint $(MYGOBIN)/golangci-lint-kustomize \
 	)
@@ -204,6 +206,12 @@ test-unit-kustomize-all: \
 	test-unit-kustomize-cli \
 	test-unit-kustomize-plugins
 
+test-unit-cmd-all:
+	./travis/kyaml-pre-commit.sh
+
+test-go-mod:
+	./travis/check-go-mod.sh
+
 .PHONY:
 test-examples-kustomize-against-HEAD: $(MYGOBIN)/kustomize $(MYGOBIN)/mdrip
 	./hack/testExamplesAgainstKustomize.sh HEAD

README.md

@@ -107,7 +107,7 @@ Take the work from step (1) above, move it into a
 `someApp` subdirectory called `base`, then
 place overlays in a sibling directory.
 
-An overlay is just another kustomization, refering to
+An overlay is just another kustomization, referring to
 the base, and referring to patches to apply to that
 base.
 

api/builtins/ImageTagTransformer.go

@@ -144,8 +144,10 @@ func (p *ImageTagTransformerPlugin) findContainers(obj map[string]interface{}) e
 }
 
 func isImageMatched(s, t string) bool {
-	// Tag values are limited to [a-zA-Z0-9_.-].
-	pattern, _ := regexp.Compile("^" + t + "(@sha256)?(:[a-zA-Z0-9_.-]*)?$")
+	// Tag values are limited to [a-zA-Z0-9_.{}-].
+	// Some tools like Bazel rules_k8s allow tag patterns with {} characters.
+	// More info: https://github.com/bazelbuild/rules_k8s/pull/423
+	pattern, _ := regexp.Compile("^" + t + "(@sha256)?(:[a-zA-Z0-9_.{}-]*)?$")
 	return pattern.MatchString(s)
 }
 

api/builtins/NamespaceTransformer.go

@@ -52,7 +52,7 @@ func (p *NamespaceTransformerPlugin) Transform(m resmap.ResMap) error {
 
 		matches := m.GetMatchingResourcesByCurrentId(r.CurId().Equals)
 		if len(matches) != 1 {
-			return fmt.Errorf("namespace tranformation produces ID conflict: %+v", matches)
+			return fmt.Errorf("namespace transformation produces ID conflict: %+v", matches)
 		}
 	}
 	return nil

api/internal/crawl/README.md

@@ -209,7 +209,7 @@ but they are functional.
 
 ## Technical details
 
-### Overall design and imlpementation
+### Overall design and implementations
 
 There are a few components that are all running together in order to get
 the overall application to work smoothly. This section will provide a brief

api/internal/crawl/config/elastic/esbackup.yaml

@@ -11,7 +11,7 @@ metadata:
 spec:
   storage:
     gcs:
-      # the bucket must exist for the snapshot respository to be created successfully.
+      # the bucket must exist for the snapshot repository to be created successfully.
       bucket: kustomize-backup
       # the path does not need to exist.
       # If the path does not exist, the controller will create the folder in the GCS bucket.

api/internal/crawl/search_cmds/transformer.md

@@ -1,4 +1,4 @@
-Find all the trasnformer files whose `kinds` field includes `HelmValues`, and
+Find all the transformer files whose `kinds` field includes `HelmValues`, and
 only output certain fields of each document:
 ```
 curl -s -X GET "${ElasticSearchURL}:9200/${INDEXNAME}/_search?pretty" -H 'Content-Type: application/json' -d'

api/internal/k8sdeps/configmapandsecret/configmapfactory.go

@@ -38,10 +38,7 @@ func (f *Factory) MakeConfigMap(
 			return nil, errors.Wrap(err, "trouble mapping")
 		}
 	}
-	if f.options != nil {
-		cm.SetLabels(f.options.Labels)
-		cm.SetAnnotations(f.options.Annotations)
-	}
+	f.setLabelsAndAnnnotations(cm, args.GeneratorOptions)
 	return cm, nil
 }
 

api/internal/k8sdeps/configmapandsecret/configmapfactory_test.go

@@ -53,7 +53,7 @@ BAR=baz
 	}
 }
 
-func makeLiteralConfigMap(name string) *corev1.ConfigMap {
+func makeLiteralConfigMap(name string, labels, annotations map[string]string) *corev1.ConfigMap {
 	cm := &corev1.ConfigMap{
 		TypeMeta: metav1.TypeMeta{
 			APIVersion: "v1",
@@ -69,7 +69,12 @@ func makeLiteralConfigMap(name string) *corev1.ConfigMap {
 			"d": "true",
 		},
 	}
-	cm.SetLabels(map[string]string{"foo": "bar"})
+	if labels != nil {
+		cm.SetLabels(labels)
+	}
+	if annotations != nil {
+		cm.SetAnnotations(annotations)
+	}
 	return cm
 }
 
@@ -128,7 +133,49 @@ func TestConstructConfigMap(t *testing.T) {
 					"foo": "bar",
 				},
 			},
-			expected: makeLiteralConfigMap("literalConfigMap"),
+			expected: makeLiteralConfigMap("literalConfigMap", map[string]string{
+				"foo": "bar",
+			}, nil),
+		},
+		{
+			description: "construct config map from literal with GeneratorOptions in ConfigMapArgs",
+			input: types.ConfigMapArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "literalConfigMap",
+					KvPairSources: types.KvPairSources{
+						LiteralSources: []string{"a=x", "b=y", "c=\"Hello World\"", "d='true'"},
+					},
+					GeneratorOptions: &types.GeneratorOptions{
+						Labels: map[string]string{
+							"foo": "changed",
+							"cat": "dog",
+						},
+						Annotations: map[string]string{
+							"foo": "changed",
+							"cat": "dog",
+						},
+					},
+				},
+			},
+			options: &types.GeneratorOptions{
+				Labels: map[string]string{
+					"foo": "bar",
+				},
+				Annotations: map[string]string{
+					"foo": "bar",
+				},
+			},
+			// GeneratorOptions from the ConfigMapArgs take precedence over the
+			// factory level GeneratorOptions and should overwrite
+			// labels/annotations set in the factory level if there are common
+			// labels/annotations
+			expected: makeLiteralConfigMap("literalConfigMap", map[string]string{
+				"foo": "changed",
+				"cat": "dog",
+			}, map[string]string{
+				"foo": "changed",
+				"cat": "dog",
+			}),
 		},
 	}
 

api/internal/k8sdeps/configmapandsecret/factory.go

@@ -4,6 +4,7 @@
 package configmapandsecret
 
 import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"sigs.k8s.io/kustomize/api/ifc"
 	"sigs.k8s.io/kustomize/api/types"
 )
@@ -20,4 +21,35 @@ func NewFactory(
 	return &Factory{kvLdr: kvLdr, options: o}
 }
 
+// setLabelsAndAnnnotations will take the labels and annotations from
+// global GeneratorOptions and resource level GeneratorOptions and merge them
+// with the resource level taking precedence, and then set them on the provided
+// obj.
+func (f *Factory) setLabelsAndAnnnotations(obj metav1.Object, opts *types.GeneratorOptions) {
+	labels := make(map[string]string)
+	annotations := make(map[string]string)
+	if f.options != nil {
+		for k, v := range f.options.Labels {
+			labels[k] = v
+		}
+		for k, v := range f.options.Annotations {
+			annotations[k] = v
+		}
+	}
+	if opts != nil {
+		for k, v := range opts.Labels {
+			labels[k] = v
+		}
+		for k, v := range opts.Annotations {
+			annotations[k] = v
+		}
+	}
+	if len(labels) != 0 {
+		obj.SetLabels(labels)
+	}
+	if len(annotations) != 0 {
+		obj.SetAnnotations(annotations)
+	}
+}
+
 const keyExistsErrorMsg = "cannot add key %s, another key by that name already exists: %v"

api/internal/k8sdeps/configmapandsecret/secretfactory.go

@@ -39,10 +39,7 @@ func (f *Factory) MakeSecret(
 			return nil, err
 		}
 	}
-	if f.options != nil {
-		s.SetLabels(f.options.Labels)
-		s.SetAnnotations(f.options.Annotations)
-	}
+	f.setLabelsAndAnnnotations(s, args.GeneratorOptions)
 	return s, nil
 }
 

api/internal/k8sdeps/configmapandsecret/secretfactory_test.go

@@ -51,7 +51,7 @@ BAR=baz
 	}
 }
 
-func makeLiteralSecret(name string) *corev1.Secret {
+func makeLiteralSecret(name string, labels, annotations map[string]string) *corev1.Secret {
 	s := &corev1.Secret{
 		TypeMeta: metav1.TypeMeta{
 			APIVersion: "v1",
@@ -66,7 +66,12 @@ func makeLiteralSecret(name string) *corev1.Secret {
 		},
 		Type: "Opaque",
 	}
-	s.SetLabels(map[string]string{"foo": "bar"})
+	if labels != nil {
+		s.SetLabels(labels)
+	}
+	if annotations != nil {
+		s.SetAnnotations(annotations)
+	}
 	return s
 }
 
@@ -120,7 +125,49 @@ func TestConstructSecret(t *testing.T) {
 					"foo": "bar",
 				},
 			},
-			expected: makeLiteralSecret("literalSecret"),
+			expected: makeLiteralSecret("literalSecret", map[string]string{
+				"foo": "bar",
+			}, nil),
+		},
+		{
+			description: "construct secret from literal with GeneratorOptions in SecretArgs",
+			input: types.SecretArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "literalSecret",
+					KvPairSources: types.KvPairSources{
+						LiteralSources: []string{"a=x", "b=y"},
+					},
+					GeneratorOptions: &types.GeneratorOptions{
+						Labels: map[string]string{
+							"foo": "changed",
+							"cat": "dog",
+						},
+						Annotations: map[string]string{
+							"foo": "changed",
+							"cat": "dog",
+						},
+					},
+				},
+			},
+			options: &types.GeneratorOptions{
+				Labels: map[string]string{
+					"foo": "bar",
+				},
+				Annotations: map[string]string{
+					"foo": "bar",
+				},
+			},
+			// GeneratorOptions from the SecretArgs take precedence over the
+			// factory level GeneratorOptions and should overwrite
+			// labels/annotations set in the factory level if there are common
+			// labels/annotations
+			expected: makeLiteralSecret("literalSecret", map[string]string{
+				"foo": "changed",
+				"cat": "dog",
+			}, map[string]string{
+				"foo": "changed",
+				"cat": "dog",
+			}),
 		},
 	}
 

api/internal/target/kusttarget.go

@@ -7,7 +7,6 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"log"
 	"strings"
 
 	"github.com/pkg/errors"
@@ -302,18 +301,15 @@ func (kt *KustTarget) configureExternalTransformers() ([]resmap.Transformer, err
 func (kt *KustTarget) accumulateResources(
 	ra *accumulator.ResAccumulator, paths []string) error {
 	for _, path := range paths {
-		ldr, err := kt.ldr.New(path)
-		if err == nil {
-			err = kt.accumulateDirectory(ra, ldr)
-			if err != nil {
-				return err
+		// try loading resource as file then as base (directory or git repository)
+		if errF := kt.accumulateFile(ra, path); errF != nil {
+			ldr, errL := kt.ldr.New(path)
+			if errL != nil {
+				return fmt.Errorf("accumulateFile %q, loader.New %q", errF, errL)
 			}
-		} else {
-			err2 := kt.accumulateFile(ra, path)
-			if err2 != nil {
-				// Log ldr.New() error to highlight git failures.
-				log.Print(err.Error())
-				return err2
+			errD := kt.accumulateDirectory(ra, ldr)
+			if errD != nil {
+				return fmt.Errorf("accumulateFile %q, accumulateDirector: %q", errF, errD)
 			}
 		}
 	}

api/konfig/builtinpluginconsts/varreference.go

@@ -30,6 +30,9 @@ varReference:
 - path: spec/jobTemplate/spec/template/spec/initContainers/volumeMounts/mountPath
   kind: CronJob
 
+- path: spec/jobTemplate/spec/template/volumes/nfs/server
+  kind: CronJob
+
 - path: spec/template/spec/containers/args
   kind: DaemonSet
 
@@ -54,6 +57,9 @@ varReference:
 - path: spec/template/spec/initContainers/volumeMounts/mountPath
   kind: DaemonSet
 
+- path: spec/template/spec/volumes/nfs/server
+  kind: DaemonSet
+
 - path: spec/template/spec/containers/args
   kind: Deployment
 
@@ -78,6 +84,9 @@ varReference:
 - path: spec/template/spec/initContainers/volumeMounts/mountPath
   kind: Deployment
 
+- path: spec/template/spec/volumes/nfs/server
+  kind: Deployment
+
 - path: spec/rules/host
   kind: Ingress
 
@@ -111,6 +120,9 @@ varReference:
 - path: spec/template/spec/initContainers/volumeMounts/mountPath
   kind: Job
 
+- path: spec/template/spec/volumes/nfs/server
+  kind: Job
+
 - path: spec/containers/args
   kind: Pod
 
@@ -135,6 +147,9 @@ varReference:
 - path: spec/initContainers/volumeMounts/mountPath
   kind: Pod
 
+- path: spec/volumes/nfs/server
+  kind: Pod
+
 - path: spec/template/spec/containers/args
   kind: ReplicaSet
 
@@ -159,6 +174,9 @@ varReference:
 - path: spec/template/spec/initContainers/volumeMounts/mountPath
   kind: ReplicaSet
 
+- path: spec/template/spec/volumes/nfs/server
+  kind: ReplicaSet
+
 - path: spec/ports/port
   kind: Service
 
@@ -189,6 +207,12 @@ varReference:
 - path: spec/template/spec/initContainers/volumeMounts/mountPath
   kind: StatefulSet
 
+- path: spec/volumeClaimTemplates/spec/nfs/server
+  kind: StatefulSet
+
+- path: spec/nfs/server
+  kind: PersistentVolume
+
 - path: metadata/labels
 
 - path: metadata/annotations

api/krusty/accumulation_test.go

@@ -74,7 +74,7 @@ spec:
 	if err == nil {
 		t.Fatalf("expected an error")
 	}
-	if !IsMissingKustomizationFileError(err) {
+	if !strings.Contains(err.Error(), "accumulating resources") {
 		t.Fatalf("unexpected error: %q", err)
 	}
 }
@@ -89,7 +89,7 @@ resources:
 	if err == nil {
 		t.Fatalf("expected an error")
 	}
-	if !strings.Contains(err.Error(), "'/app/deployment.yaml' doesn't exist") {
+	if !strings.Contains(err.Error(), "accumulating resources") {
 		t.Fatalf("unexpected error: %q", err)
 	}
 }

api/krusty/variableref_test.go

@@ -1336,3 +1336,637 @@ spec:
     protocol: TCP
 `)
 }
+
+func TestVariableRefNFSServer(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK("/app/base", `
+resources:
+- pv_pvc.yaml
+- nfs_deployment.yaml
+- nfs_service.yaml
+- Deployment.yaml
+- CronJob.yaml
+- DaemonSet.yaml
+- ReplicaSet.yaml
+- StatefulSet.yaml
+- Pod.yaml
+- Job.yaml
+- nfs_pv.yaml
+
+vars:
+- name: NFS_SERVER_SERVICE_NAME
+  objref:
+    kind: Service
+    name: nfs-server-service
+    apiVersion: v1
+  fieldref:
+    fieldpath: metadata.name
+`)
+	th.WriteF("/app/base/pv_pvc.yaml", `
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: shared-volume-claim
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 10Gi
+`)
+	th.WriteF("/app/base/nfs_deployment.yaml", `
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: nfs-server
+spec:
+  replicas: 1
+  template:
+    spec:
+      metadata:
+        labels:
+          role: nfs-server
+      containers:
+        - name: nfs-server
+          image: gcr.io/google_containers/volume-nfs:0.8
+          ports:
+            - name: nfs
+              containerPort: 2049
+            - name: mountd
+              containerPort: 20048
+            - name: rpcbind
+              containerPort: 111
+          securityContext:
+            privileged: true
+          volumeMounts:
+            - mountPath: /exports
+              name: shared-files
+      volumes:
+        - name: shared-files
+          persistentVolumeClaim:
+            claimName: shared-volume-claim
+`)
+	th.WriteF("/app/base/nfs_service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: nfs-server-service
+spec:
+  ports:
+    - name: nfs
+      port: 2049
+    - name: mountd
+      port: 20048
+    - name: rpcbind
+      port: 111
+  selector:
+    role: nfs-server
+`)
+	th.WriteF("/app/base/Deployment.yaml", `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx
+  labels:
+    app.kubernetes.io/component: nginx
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/component: nginx
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/component: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.15.7-alpine
+        ports:
+        - name: http
+          containerPort: 80
+        volumeMounts:
+          - mountPath: /app/shared-files
+            name: nfs-files-vol
+      volumes:
+        - name: nfs-files-vol
+          nfs:
+            server: $(NFS_SERVER_SERVICE_NAME).default.srv.cluster.local
+            path: /
+            readOnly: false
+`)
+	th.WriteF("/app/base/CronJob.yaml", `
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: hello
+spec:
+  schedule: "*/1 * * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: hello
+            image: busybox
+            args:
+            - /bin/sh
+            - -c
+            - date; echo Hello from the Kubernetes cluster
+          restartPolicy: OnFailure
+          volumeMounts:
+          - mountPath: /app/shared-files
+            name: nfs-files-vol
+        volumes:
+        - name: nfs-files-vol
+          nfs:
+            server: $(NFS_SERVER_SERVICE_NAME).default.srv.cluster.local
+            path: /
+            readOnly: false
+`)
+	th.WriteF("/app/base/DaemonSet.yaml", `
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: fluentd-elasticsearch
+  namespace: kube-system
+  labels:
+    k8s-app: fluentd-logging
+spec:
+  selector:
+    matchLabels:
+      name: fluentd-elasticsearch
+  template:
+    metadata:
+      labels:
+        name: fluentd-elasticsearch
+    spec:
+      tolerations:
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+      containers:
+      - name: fluentd-elasticsearch
+        image: quay.io/fluentd_elasticsearch/fluentd:v2.5.2
+        resources:
+          limits:
+            memory: 200Mi
+          requests:
+            cpu: 100m
+            memory: 200Mi
+        volumeMounts:
+        - name: varlog
+          mountPath: /var/log
+        - name: varlibdockercontainers
+          mountPath: /var/lib/docker/containers
+          readOnly: true
+        - mountPath: /app/shared-files
+          name: nfs-files-vol
+      terminationGracePeriodSeconds: 30
+      volumes:
+      - name: varlog
+        hostPath:
+          path: /var/log
+      - name: varlibdockercontainers
+        hostPath:
+          path: /var/lib/docker/containers
+      - name: nfs-files-vol
+        nfs:
+          server: $(NFS_SERVER_SERVICE_NAME).default.srv.cluster.local
+          path: /
+          readOnly: false
+`)
+	th.WriteF("/app/base/ReplicaSet.yaml", `
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  name: frontend
+  labels:
+    app: guestbook
+    tier: frontend
+spec:
+  # modify replicas according to your case
+  replicas: 3
+  selector:
+    matchLabels:
+      tier: frontend
+  template:
+    metadata:
+      labels:
+        tier: frontend
+    spec:
+      containers:
+      - name: php-redis
+        image: gcr.io/google_samples/gb-frontend:v3
+        volumeMounts:
+        - mountPath: /app/shared-files
+          name: nfs-files-vol
+      volumes:
+      - name: nfs-files-vol
+        nfs:
+          server: $(NFS_SERVER_SERVICE_NAME).default.srv.cluster.local
+          path: /
+          readOnly: false
+`)
+
+	th.WriteF("/app/base/Job.yaml", `
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: pi
+spec:
+  template:
+    spec:
+      containers:
+      - name: pi
+        image: perl
+        command: ["perl",  "-Mbignum=bpi", "-wle", "print bpi(2000)"]
+        volumeMounts:
+        - mountPath: /app/shared-files
+          name: nfs-files-vol
+      restartPolicy: Never
+      volumes:
+      - name: nfs-files-vol
+        nfs:
+          server: $(NFS_SERVER_SERVICE_NAME).default.srv.cluster.local
+          path: /
+          readOnly: false
+  backoffLimit: 4
+`)
+	th.WriteF("/app/base/StatefulSet.yaml", `
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: web
+spec:
+  selector:
+    matchLabels:
+      app: nginx # has to match .spec.template.metadata.labels
+  serviceName: "nginx"
+  replicas: 3 # by default is 1
+  template:
+    metadata:
+      labels:
+        app: nginx # has to match .spec.selector.matchLabels
+    spec:
+      terminationGracePeriodSeconds: 10
+      containers:
+      - name: nginx
+        image: k8s.gcr.io/nginx-slim:0.8
+        ports:
+        - containerPort: 80
+          name: web
+        volumeMounts:
+        - name: www
+          mountPath: /usr/share/nginx/html
+  volumeClaimTemplates:
+  - metadata:
+      name: www
+    spec:
+      accessModes: [ "ReadWriteMany" ]
+      nfs:
+        server: $(NFS_SERVER_SERVICE_NAME).default.srv.cluster.local
+        path: /
+        readOnly: false
+`)
+	th.WriteF("/app/base/Pod.yaml", `
+apiVersion: v1
+kind: Pod
+metadata:
+  name: myapp-pod
+  labels:
+    app: myapp
+spec:
+  containers:
+  - name: nginx
+    image: nginx:1.15.7-alpine
+    ports:
+    - name: http
+      containerPort: 80
+  volumeMounts:
+  - name: nfs-files-vol
+    mountPath: /app/shared-files
+  volumes:
+  - name: nfs-files-vol
+    nfs:
+      server: $(NFS_SERVER_SERVICE_NAME).default.srv.cluster.local
+      path: /
+      readOnly: false
+`)
+	th.WriteF("/app/base/nfs_pv.yaml", `
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: nfs-files-pv
+spec:
+  capacity:
+    storage: 10Gi
+  accessModes:
+    - ReadWriteMany
+  nfs:
+    server: $(NFS_SERVER_SERVICE_NAME).default.srv.cluster.local
+    path: /
+    readOnly: false
+`)
+	th.WriteK("/app/overlay", `
+nameprefix: kustomized-
+resources:
+- ../base
+`)
+	m := th.Run("/app/overlay", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: kustomized-shared-volume-claim
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 10Gi
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: kustomized-nfs-server
+spec:
+  replicas: 1
+  template:
+    spec:
+      containers:
+      - image: gcr.io/google_containers/volume-nfs:0.8
+        name: nfs-server
+        ports:
+        - containerPort: 2049
+          name: nfs
+        - containerPort: 20048
+          name: mountd
+        - containerPort: 111
+          name: rpcbind
+        securityContext:
+          privileged: true
+        volumeMounts:
+        - mountPath: /exports
+          name: shared-files
+      metadata:
+        labels:
+          role: nfs-server
+      volumes:
+      - name: shared-files
+        persistentVolumeClaim:
+          claimName: kustomized-shared-volume-claim
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: kustomized-nfs-server-service
+spec:
+  ports:
+  - name: nfs
+    port: 2049
+  - name: mountd
+    port: 20048
+  - name: rpcbind
+    port: 111
+  selector:
+    role: nfs-server
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app.kubernetes.io/component: nginx
+  name: kustomized-nginx
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/component: nginx
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/component: nginx
+    spec:
+      containers:
+      - image: nginx:1.15.7-alpine
+        name: nginx
+        ports:
+        - containerPort: 80
+          name: http
+        volumeMounts:
+        - mountPath: /app/shared-files
+          name: nfs-files-vol
+      volumes:
+      - name: nfs-files-vol
+        nfs:
+          path: /
+          readOnly: false
+          server: kustomized-nfs-server-service.default.srv.cluster.local
+---
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: kustomized-hello
+spec:
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - args:
+            - /bin/sh
+            - -c
+            - date; echo Hello from the Kubernetes cluster
+            image: busybox
+            name: hello
+          restartPolicy: OnFailure
+          volumeMounts:
+          - mountPath: /app/shared-files
+            name: nfs-files-vol
+        volumes:
+        - name: nfs-files-vol
+          nfs:
+            path: /
+            readOnly: false
+            server: kustomized-nfs-server-service.default.srv.cluster.local
+  schedule: '*/1 * * * *'
+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  labels:
+    k8s-app: fluentd-logging
+  name: kustomized-fluentd-elasticsearch
+  namespace: kube-system
+spec:
+  selector:
+    matchLabels:
+      name: fluentd-elasticsearch
+  template:
+    metadata:
+      labels:
+        name: fluentd-elasticsearch
+    spec:
+      containers:
+      - image: quay.io/fluentd_elasticsearch/fluentd:v2.5.2
+        name: fluentd-elasticsearch
+        resources:
+          limits:
+            memory: 200Mi
+          requests:
+            cpu: 100m
+            memory: 200Mi
+        volumeMounts:
+        - mountPath: /var/log
+          name: varlog
+        - mountPath: /var/lib/docker/containers
+          name: varlibdockercontainers
+          readOnly: true
+        - mountPath: /app/shared-files
+          name: nfs-files-vol
+      terminationGracePeriodSeconds: 30
+      tolerations:
+      - effect: NoSchedule
+        key: node-role.kubernetes.io/master
+      volumes:
+      - hostPath:
+          path: /var/log
+        name: varlog
+      - hostPath:
+          path: /var/lib/docker/containers
+        name: varlibdockercontainers
+      - name: nfs-files-vol
+        nfs:
+          path: /
+          readOnly: false
+          server: kustomized-nfs-server-service.default.srv.cluster.local
+---
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  labels:
+    app: guestbook
+    tier: frontend
+  name: kustomized-frontend
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      tier: frontend
+  template:
+    metadata:
+      labels:
+        tier: frontend
+    spec:
+      containers:
+      - image: gcr.io/google_samples/gb-frontend:v3
+        name: php-redis
+        volumeMounts:
+        - mountPath: /app/shared-files
+          name: nfs-files-vol
+      volumes:
+      - name: nfs-files-vol
+        nfs:
+          path: /
+          readOnly: false
+          server: kustomized-nfs-server-service.default.srv.cluster.local
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: kustomized-web
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: nginx
+  serviceName: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - image: k8s.gcr.io/nginx-slim:0.8
+        name: nginx
+        ports:
+        - containerPort: 80
+          name: web
+        volumeMounts:
+        - mountPath: /usr/share/nginx/html
+          name: www
+      terminationGracePeriodSeconds: 10
+  volumeClaimTemplates:
+  - metadata:
+      name: www
+    spec:
+      accessModes:
+      - ReadWriteMany
+      nfs:
+        path: /
+        readOnly: false
+        server: kustomized-nfs-server-service.default.srv.cluster.local
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    app: myapp
+  name: kustomized-myapp-pod
+spec:
+  containers:
+  - image: nginx:1.15.7-alpine
+    name: nginx
+    ports:
+    - containerPort: 80
+      name: http
+  volumeMounts:
+  - mountPath: /app/shared-files
+    name: nfs-files-vol
+  volumes:
+  - name: nfs-files-vol
+    nfs:
+      path: /
+      readOnly: false
+      server: kustomized-nfs-server-service.default.srv.cluster.local
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: kustomized-pi
+spec:
+  backoffLimit: 4
+  template:
+    spec:
+      containers:
+      - command:
+        - perl
+        - -Mbignum=bpi
+        - -wle
+        - print bpi(2000)
+        image: perl
+        name: pi
+        volumeMounts:
+        - mountPath: /app/shared-files
+          name: nfs-files-vol
+      restartPolicy: Never
+      volumes:
+      - name: nfs-files-vol
+        nfs:
+          path: /
+          readOnly: false
+          server: kustomized-nfs-server-service.default.srv.cluster.local
+---
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: kustomized-nfs-files-pv
+spec:
+  accessModes:
+  - ReadWriteMany
+  capacity:
+    storage: 10Gi
+  nfs:
+    path: /
+    readOnly: false
+    server: kustomized-nfs-server-service.default.srv.cluster.local
+`)
+}

api/loader/fileloader.go

@@ -5,7 +5,10 @@ package loader
 
 import (
 	"fmt"
+	"io/ioutil"
 	"log"
+	"net/http"
+	"net/url"
 	"path/filepath"
 	"strings"
 
@@ -86,6 +89,9 @@ type fileLoader struct {
 	// File system utilities.
 	fSys filesys.FileSystem
 
+	// Used to load from HTTP
+	http *http.Client
+
 	// Used to clone repositories.
 	cloner git.Cloner
 
@@ -293,6 +299,25 @@ func (fl *fileLoader) errIfRepoCycle(newRepoSpec *git.RepoSpec) error {
 // else an error.  Relative paths are taken relative
 // to the root.
 func (fl *fileLoader) Load(path string) ([]byte, error) {
+	if u, err := url.Parse(path); err == nil && (u.Scheme == "http" || u.Scheme == "https") {
+		var hc *http.Client
+		if fl.http != nil {
+			hc = fl.http
+		} else {
+			hc = &http.Client{}
+		}
+		resp, err := hc.Get(path)
+		if err != nil {
+			return nil, err
+		}
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return nil, err
+		}
+		return body, nil
+	}
+
 	if !filepath.IsAbs(path) {
 		path = fl.root.Join(path)
 	}

api/loader/fileloader_test.go

@@ -4,7 +4,9 @@
 package loader
 
 import (
+	"bytes"
 	"io/ioutil"
+	"net/http"
 	"os"
 	"path"
 	"path/filepath"
@@ -54,6 +56,7 @@ func makeLoader() *fileLoader {
 	return NewFileLoaderAtRoot(MakeFakeFs(testCases))
 
 }
+
 func TestLoaderLoad(t *testing.T) {
 	l1 := makeLoader()
 	if "/" != l1.Root() {
@@ -579,3 +582,93 @@ func TestRepoIndirectCycleDetection(t *testing.T) {
 		t.Fatalf("unexpected err: %v", err)
 	}
 }
+
+// Inspired by https://hassansin.github.io/Unit-Testing-http-client-in-Go
+type fakeRoundTripper func(req *http.Request) *http.Response
+
+func (f fakeRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	return f(req), nil
+}
+
+func makeFakeHTTPClient(fn fakeRoundTripper) *http.Client {
+	return &http.Client{
+		Transport: fn,
+	}
+}
+
+// TestLoaderHTTP test http file loader
+func TestLoaderHTTP(t *testing.T) {
+	var testCasesFile = []testData{
+		{
+			path:            "http/file.yaml",
+			expectedContent: "file content",
+		},
+	}
+
+	l1 := NewFileLoaderAtRoot(MakeFakeFs(testCasesFile))
+	if "/" != l1.Root() {
+		t.Fatalf("incorrect root: '%s'\n", l1.Root())
+	}
+	for _, x := range testCasesFile {
+		b, err := l1.Load(x.path)
+		if err != nil {
+			t.Fatalf("unexpected load error: %v", err)
+		}
+		if !reflect.DeepEqual([]byte(x.expectedContent), b) {
+			t.Fatalf("in load expected %s, but got %s", x.expectedContent, b)
+		}
+	}
+
+	var testCasesHTTP = []testData{
+		{
+			path:            "http://example.com/resource.yaml",
+			expectedContent: "http content",
+		},
+		{
+			path:            "https://example.com/resource.yaml",
+			expectedContent: "https content",
+		},
+	}
+
+	for _, x := range testCasesHTTP {
+		hc := makeFakeHTTPClient(func(req *http.Request) *http.Response {
+			u := req.URL.String()
+			if x.path != u {
+				t.Fatalf("expected URL %s, but got %s", x.path, u)
+			}
+			return &http.Response{
+				StatusCode: 200,
+				Body:       ioutil.NopCloser(bytes.NewBufferString(x.expectedContent)),
+				Header:     make(http.Header),
+			}
+		})
+		l2 := l1
+		l2.http = hc
+		b, err := l2.Load(x.path)
+		if err != nil {
+			t.Fatalf("unexpected load error: %v", err)
+		}
+		if !reflect.DeepEqual([]byte(x.expectedContent), b) {
+			t.Fatalf("in load expected %s, but got %s", x.expectedContent, b)
+		}
+	}
+
+	var testCaseUnsupported = []testData{
+		{
+			path:            "httpsnotreal://example.com/resource.yaml",
+			expectedContent: "invalid",
+		},
+	}
+	for _, x := range testCaseUnsupported {
+		hc := makeFakeHTTPClient(func(req *http.Request) *http.Response {
+			t.Fatalf("unexpected request to URL %s", req.URL.String())
+			return nil
+		})
+		l2 := l1
+		l2.http = hc
+		_, err := l2.Load(x.path)
+		if err == nil {
+			t.Fatalf("expect error but get %v", err)
+		}
+	}
+}

api/resmap/resmap.go

@@ -114,7 +114,7 @@ type ResMap interface {
 	Append(*resource.Resource) error
 
 	// AppendAll appends another ResMap to self,
-	// failing on any OrgId collision.
+	// failing on any CurId collision.
 	AppendAll(ResMap) error
 
 	// AbsorbAll appends, replaces or merges the contents

api/types/generatorargs.go

@@ -21,4 +21,7 @@ type GeneratorArgs struct {
 
 	// KvPairSources for the generator.
 	KvPairSources `json:",inline,omitempty" yaml:",inline,omitempty"`
+
+	// GeneratorOptions modify this generator
+	GeneratorOptions *GeneratorOptions `json:"generatorOptions,omitempty" yaml:"generatorOptions,omitempty"`
 }

cmd/config/go.mod

@@ -10,7 +10,5 @@ require (
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.4.0
 	k8s.io/apimachinery v0.17.0
-	sigs.k8s.io/kustomize/kyaml v0.0.0
+	sigs.k8s.io/kustomize/kyaml v0.1.2
 )
-
-replace sigs.k8s.io/kustomize/kyaml v0.0.0 => ../../kyaml

cmd/config/go.sum

@@ -1,12 +1,18 @@
+github.com/360EntSecGroup-Skylar/excelize v1.4.1/go.mod h1:vnax29X2usfl7HHkBrX5EvSCJcmH3dT9luvxzu8iGAE=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
+github.com/PuerkitoBio/goquery v1.5.0/go.mod h1:qD2PgZ9lccMbQlc7eEOjaeRlFQON7xY8kdmcsrnKqMg=
 github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI=
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
+github.com/andybalholm/cascadia v1.0.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
@@ -16,6 +22,7 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZgvJUkLughtfhJv5dyTYa91l1fOUCrgjqmcifM=
+github.com/dustmop/soup v1.1.2-0.20190516214245-38228baa104e/go.mod h1:CgNC6SGbT+Xb8wGGvzilttZL1mc5sQ/5KkcxsZttMIk=
 github.com/elazarl/goproxy v0.0.0-20170405201442-c4fc26588b6e/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
 github.com/emicklei/go-restful v0.0.0-20170410110728-ff4f55a20633/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
 github.com/evanphx/json-patch v4.2.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
@@ -82,6 +89,7 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJ
 github.com/modern-go/reflect2 v0.0.0-20180320133207-05fbef0ca5da/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826/go.mod h1:TaXosZuwdSHYgviHp1DAtfrULt5eUgsSMsZf+YrPgl8=
 github.com/munnerz/goautoneg v0.0.0-20120707110453-a547fc61f48d/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f/go.mod h1:ZdcZmHo+o7JKHSa8/e818NopupXU1YMK5fe1lsApnBw=
 github.com/olekukonko/tablewriter v0.0.4 h1:vHD/YYe1Wolo78koG299f7V/VAS08c6IpCLn+Ejf/w8=
@@ -91,6 +99,7 @@ github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+W
 github.com/onsi/ginkgo v1.10.1/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v0.0.0-20170829124025-dcabb60a477c/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5uiA=
 github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
+github.com/paulmach/orb v0.1.3/go.mod h1:VFlX/8C+IQ1p6FTRRKzKoOPJnvEtA5G0Veuqwbu//Vk=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v0.0.0-20151028094244-d8ed2627bdf0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
@@ -100,6 +109,7 @@ github.com/posener/complete/v2 v2.0.1-alpha.12 h1:0wvkuDfHb5vSZlNBYgpEH4XQHpF46M
 github.com/posener/complete/v2 v2.0.1-alpha.12/go.mod h1://JlL91cS2JV7rOl6LVHrRqBXoBUecJu3ILQPgbJiMQ=
 github.com/posener/script v1.0.4 h1:nSuXW5ZdmFnQIueLB2s0qvs4oNsUloM1Zydzh75v42w=
 github.com/posener/script v1.0.4/go.mod h1:Rg3ijooqulo05aGLyGsHoLmIOUzHUVK19WVgrYBPU/E=
+github.com/qri-io/starlib v0.4.2-0.20200213133954-ff2e8cd5ef8d/go.mod h1:7DPO4domFU579Ga6E61sB9VFNaniPVwJP5C4bBCu3wA=
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
@@ -116,6 +126,7 @@ github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DM
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v0.0.0-20151208002404-e3a8ff8ce365/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.2.3-0.20181224173747-660f15d67dbb/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
@@ -123,10 +134,15 @@ github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljT
 github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca h1:1CFlNzQhALwjS9mBAUkycX616GzgsuYUOCHA5+HSlXI=
 github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca/go.mod h1:ce1O1j6UtZfjr22oyGxGLbauSBp2YVXpARAosm7dHBg=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
+go.starlark.net v0.0.0-20190528202925-30ae18b8564f/go.mod h1:c1/X6cHgvdXj6pUlmWKMkuqRnW4K8x2vwt6JAaaircg=
+go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5/go.mod h1:nmDLcffg48OtT/PSW0Hg7FvpRQsQh5OSqIylirxKC7o=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/net v0.0.0-20170114055629-f2499483f923/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191004110552-13f9640d40b9 h1:rjwSpXsdiK0dV8/Naq3kAw9ymfAeJIyd0upUIElB+lI=
@@ -137,6 +153,7 @@ golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190826190057-c7b8b68b1456/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191002063906-3421d5a6bb1c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
@@ -156,13 +173,17 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20191026110619-0b21df46bc1d h1:LCPbGQ34PMrwad11aMZ+dbz5SAsq/0ySjRwQ8I9Qwd8=
-gopkg.in/yaml.v3 v3.0.0-20191026110619-0b21df46bc1d/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v2 v2.2.7 h1:VUgggvou5XRW9mHwD/yXxIYSMtY0zoKQf/v226p2nyo=
+gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2 h1:XZx7nhd5GMaZpmDaEHFVafUZC7ya0fuo7cSJ3UCKYmM=
+gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 k8s.io/apimachinery v0.17.0 h1:xRBnuie9rXcPxUkDizUsGvPf1cnlZCFu210op7J7LJo=
 k8s.io/apimachinery v0.17.0/go.mod h1:b9qmWdKlLuU9EBh+06BtLcSf/Mu89rWL33naRxs1uZg=
 k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
 k8s.io/kube-openapi v0.0.0-20191107075043-30be4d16710a/go.mod h1:1TqjTSzOxsLGIKfj0lK8EeCP7K1iUG65v09OM0/WG5E=
+sigs.k8s.io/kustomize/kyaml v0.1.2 h1:l12+QGl+ETUHhP8/bZAi6TknU7H194fXL/9b2gUxZFY=
+sigs.k8s.io/kustomize/kyaml v0.1.2/go.mod h1:461i94nj0h0ylJ6w83jLkR4SqqVhn1iY6fjD0JSTQeE=
 sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=

cmd/config/internal/commands/cmdcreatesetter.go

@@ -38,8 +38,7 @@ func NewCreateSetterRunner(parent string) *CreateSetterRunner {
 		"kind of the Resource on which to create the setter.")
 	set.Flags().MarkHidden("kind")
 	set.Flags().StringVar(&r.Set.SetPartialField.Type, "type", "",
-		"valid OpenAPI field type -- e.g. integer,boolean,string.")
-	set.Flags().MarkHidden("type")
+		"OpenAPI field type for the setter -- e.g. integer,boolean,string.")
 	set.Flags().BoolVar(&r.Set.SetPartialField.Partial, "partial", false,
 		"create a partial setter for only part of the field value.")
 	set.Flags().MarkHidden("partial")
@@ -89,6 +88,7 @@ func (r *CreateSetterRunner) preRunE(c *cobra.Command, args []string) error {
 		r.OpenAPIFile, err = ext.GetOpenAPIFile(args)
 		r.CreateSetter.Description = r.Set.SetPartialField.Description
 		r.CreateSetter.SetBy = r.Set.SetPartialField.SetBy
+		r.CreateSetter.Type = r.Set.SetPartialField.Type
 		if err != nil {
 			return err
 		}

cmd/config/internal/commands/cmdcreatesubstitution_test.go

@@ -102,6 +102,72 @@ spec:
         image: nginx:1.7.9 # {"$ref":"#/definitions/io.k8s.cli.substitutions.image"}
       - name: sidecar
         image: sidecar:1.7.9
+ `,
+		},
+		{
+			name: "substitution and create setters 1",
+			args: []string{
+				"image", "something/nginx::1.7.9/nginxotherthing", "--pattern", "something/IMAGE::TAG/nginxotherthing",
+				"--value", "IMAGE=image", "--value", "TAG=tag"},
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  replicas: 3
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: something/nginx::1.7.9/nginxotherthing
+      - name: sidecar
+        image: sidecar:1.7.9
+ `,
+			inputOpenAPI: `
+apiVersion: v1alpha1
+kind: Example
+ `,
+			expectedOpenAPI: `
+apiVersion: v1alpha1
+kind: Example
+openAPI:
+  definitions:
+    io.k8s.cli.setters.image:
+      x-k8s-cli:
+        setter:
+          name: image
+          value: nginx
+    io.k8s.cli.setters.tag:
+      x-k8s-cli:
+        setter:
+          name: tag
+          value: 1.7.9
+    io.k8s.cli.substitutions.image:
+      x-k8s-cli:
+        substitution:
+          name: image
+          pattern: something/IMAGE::TAG/nginxotherthing
+          values:
+          - marker: IMAGE
+            ref: '#/definitions/io.k8s.cli.setters.image'
+          - marker: TAG
+            ref: '#/definitions/io.k8s.cli.setters.tag'
+ `,
+			expectedResources: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  replicas: 3
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: something/nginx::1.7.9/nginxotherthing # {"$ref":"#/definitions/io.k8s.cli.substitutions.image"}
+      - name: sidecar
+        image: sidecar:1.7.9
  `,
 		},
 	}

cmd/config/internal/commands/cmdlistsetters.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strings"
 
 	"github.com/olekukonko/tablewriter"
 	"github.com/spf13/cobra"
@@ -67,8 +68,15 @@ func (r *ListSettersRunner) runE(c *cobra.Command, args []string) error {
 		table.SetHeader([]string{"NAME", "VALUE", "SET BY", "DESCRIPTION", "COUNT"})
 		for i := range r.List.Setters {
 			s := r.List.Setters[i]
+			v := s.Value
+
+			// if the setter is for a list, populate the values
+			if len(s.ListValues) > 0 {
+				v = strings.Join(s.ListValues, ",")
+				v = fmt.Sprintf("[%s]", v)
+			}
 			table.Append([]string{
-				s.Name, s.Value, s.SetBy, s.Description, fmt.Sprintf("%d", s.Count)})
+				s.Name, v, s.SetBy, s.Description, fmt.Sprintf("%d", s.Count)})
 		}
 		table.Render()
 

cmd/config/internal/commands/cmdset.go

@@ -21,7 +21,7 @@ func NewSetRunner(parent string) *SetRunner {
 	r := &SetRunner{}
 	c := &cobra.Command{
 		Use:     "set DIR NAME [VALUE]",
-		Args:    cobra.RangeArgs(1, 3),
+		Args:    cobra.MinimumNArgs(3),
 		Short:   commands.SetShort,
 		Long:    commands.SetLong,
 		Example: commands.SetExamples,
@@ -94,6 +94,11 @@ func (r *SetRunner) preRunE(c *cobra.Command, args []string) error {
 		var err error
 		r.Set.Name = args[1]
 		r.Set.Value = args[2]
+
+		// set remaining values as list values
+		if len(args) > 3 {
+			r.Set.ListValues = args[3:]
+		}
 		r.Set.Description = r.Perform.Description
 		r.Set.SetBy = r.Perform.SetBy
 		r.OpenAPIFile, err = ext.GetOpenAPIFile(args)

cmd/config/internal/commands/cmdset_test.go

@@ -109,7 +109,6 @@ openAPI:
         setter:
           name: replicas
           value: "4"
-          setBy: me
  `,
 			expectedResources: `
 apiVersion: apps/v1

cmd/config/internal/commands/run-fns.go

@@ -89,6 +89,14 @@ func (r *RunFnRunner) getFunctions(c *cobra.Command, args, dataItems []string) (
 	if err != nil {
 		return nil, err
 	}
+	if r.Network {
+		err = fn.PipeE(
+			yaml.LookupCreate(yaml.MappingNode, "container", "network"),
+			yaml.SetField("required", yaml.NewScalarRNode("true")))
+		if err != nil {
+			return nil, err
+		}
+	}
 
 	// create the function config
 	rc, err := yaml.Parse(`

cmd/config/internal/commands/run_test.go

@@ -101,7 +101,7 @@ metadata:
   name: function-input
   annotations:
     config.kubernetes.io/function: |
-      container: {image: 'foo:bar'}
+      container: {image: 'foo:bar', network: {required: true}}
 data: {}
 kind: ConfigMap
 apiVersion: v1
@@ -118,7 +118,7 @@ metadata:
   name: function-input
   annotations:
     config.kubernetes.io/function: |
-      container: {image: 'foo:bar'}
+      container: {image: 'foo:bar', network: {required: true}}
 data: {}
 kind: ConfigMap
 apiVersion: v1

docs/FAQ.md

@@ -18,7 +18,7 @@ cluster
 Resources (including configmap and secret generators)
 can _still be shared_ via the recommended best practice
 of placing them in a directory with their own
-kustomization file, and refering to this directory as a
+kustomization file, and referring to this directory as a
 [`base`](glossary.md#base) from any kustomization that
 wants to use it.  This encourages modularity and
 relocatability.

docs/eschewedFeatures.md

@@ -48,7 +48,7 @@ like adding labels or annotatations, get dedicated
 transformer plugins - `LabelTransformer`,
 `AnnotationsTransformer`, etc.
 These accept relatively simple YAML configuration
-allowing easy targetting of any number of resources.
+allowing easy targeting of any number of resources.
 
 Another class of edits take data from one specific
 object's field and use it in another (e.g. a service

docs/fields.md

@@ -131,6 +131,10 @@ crds:
 Modifies behavior of all [ConfigMap](#configmapgenerator)
 and [Secret](#secretgenerator) generators.
 
+Additionally, generatorOptions can be set on a per resource level within each
+generator. For details on per-resource generatorOptions usage see
+[field-name-configMapGenerator] and See [field-name-secretGenerator].
+
 ```
 generatorOptions:
   # labels to add to all generated resources
@@ -202,7 +206,7 @@ See [field-name-replicas].
 ### resources
 
 Each entry in this list must be a path to a
-_file_, or a path (or URL) refering to another
+_file_, or a path (or URL) referring to another
 kustomization _directory_, e.g.
 
 ```

docs/glossary.md

@@ -273,9 +273,9 @@ more than one version).
 
 _kustomize_ is a command line tool supporting
 template-free, structured customization of declarative
-configuration targetted to k8s-style objects.
+configuration targeted to k8s-style objects.
 
-_Targetted to k8s means_ that kustomize has some
+_Targeted to k8s means_ that kustomize has some
 understanding of API resources, k8s concepts like
 names, labels, namespaces, etc. and the semantics of
 resource patching.

docs/plugins/README.md

@@ -209,7 +209,7 @@ a YAML file containing its configuration (the file name
 provided in the kustomization file).
 
 > TODO: restrictions on plugin to allow the _same exec
-> plugin_ to be targetted by  both the
+> plugin_ to be targeted by both the
 > `generators` and `transformers` fields.
 >
 > - first arg could be the fixed string

docs/plugins/builtins.md

@@ -90,9 +90,9 @@ commonAnnotations:
 Each entry in this list results in the creation of
 one ConfigMap resource (it's a generator of n maps).
 
-The example below creates two ConfigMaps. One with the
-names and contents of the given files, the other with
-key/value as data.
+The example below creates three ConfigMaps. One with the names and contents of
+the given files, one with key/value as data, and a third which sets an
+annotation and label via generatorOptions for that single ConfigMap.
 
 Each configMapGenerator item accepts a parameter of
 `behavior: [create|replace|merge]`.
@@ -109,6 +109,14 @@ configMapGenerator:
   literals:	
   - JAVA_HOME=/opt/java/jdk
   - JAVA_TOOL_OPTIONS=-agentlib:hprof
+- name: dashboards
+  files:
+  - mydashboard.json
+  generatorOptions:
+    annotations:
+      dashboard: "1"
+    labels:
+      app.kubernetes.io/name: "app1"
 ```
 
 It is also possible to
@@ -651,6 +659,15 @@ secretGenerator:
   envs:
   - env.txt
   type: Opaque
+- name: secret-with-annotation
+  files:
+  - app-config.yaml
+  type: Opaque
+  generatorOptions:
+    annotations:
+      app_config: "true"
+    labels:
+      app.kubernetes.io/name: "app2"
 ```
 
 ### Usage via plugin

docs/v2.1.0_changelog.md

@@ -78,7 +78,7 @@ a7a2589e Fix yaml in generator examples.
 529db049 Introduce envs field.
 6d309b52 Introduce stacked transformers.
 abf538d8 Keep backward compatibility for image transformer
-7e12918f Keep var refernce in resources
+7e12918f Keep var references in resources
 7130e3ff Leave defautconfig empty for images
 3e85c458 Load default config for image transformer
 4162dbc2 Maintain resources in order loaded.

docs/versioningPolicy.md

@@ -37,7 +37,7 @@ the _kustomize Go API_.
 
 [import path]: https://github.com/golang/go/wiki/Modules#releasing-modules-v2-or-higher
 
-In `kustomize/v3` (and preceeding major versions), the
+In `kustomize/v3` (and preceding major versions), the
 kustomize program and the API live the same Go
 module at `sigs.k8s.io/kustomize`, at [import path]
 `sigs.k8s.io/kustomize/v3`.

examples/inlinePatch.md

@@ -4,7 +4,7 @@
 # Demo: Inline Patch
 
 A kustomization file supports patching in three ways:
-- patchesStrategicMerge: A list of patch files where each file is parsed as a [Stragetic Merge Patch].
+- patchesStrategicMerge: A list of patch files where each file is parsed as a [Strategic Merge Patch].
 - patchesJSON6902: A list of patches and associated targetes, where each file is parsed as a [JSON Patch] and can only be applied to one target resource.
 - patches: A list of patches and their associated targets. The patch can be applied to multiple objects. It auto detects whether the patch is a [Strategic Merge Patch] or [JSON Patch].
 

examples/loadHttp.md

@@ -0,0 +1,25 @@
+# load file from http
+
+Resource and patch files could be loaded from http
+
+<!-- @loadHttp -->
+```sh
+DEMO_HOME=$(mktemp -d)
+
+cat <<EOF >$DEMO_HOME/kustomization.yaml
+resources:
+- https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/examples/helloWorld/configMap.yaml
+EOF
+```
+
+<!-- @loadHttp -->
+```sh
+test 1 == \
+  $(kustomize build $DEMO_HOME | grep "Good Morning!" | wc -l); \
+  echo $?
+```
+
+Kustomize will try loading resource as a file either from local or http. If it
+fails, try to load it as a directory or git repository.
+
+Http load applies to patches as well. See full example in [loadHttp](loadHttp/).

examples/loadHttp/kustomization.yaml

@@ -0,0 +1,15 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/examples/wordpress/wordpress/deployment.yaml
+- https://github.com/knative/serving/releases/download/v0.12.0/serving.yaml # redirects to s3
+patches:
+- https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/examples/wordpress/patch.yaml
+patchesStrategicMerge:
+- |-
+  apiVersion: rbac.authorization.k8s.io/v1
+  kind: RoleBinding
+  metadata:
+    name: custom-metrics-auth-reader
+    namespace: kube-system
+  $patch: delete

functions/examples/application-cr/LICENSE_TEMPLATE

@@ -0,0 +1,2 @@
+Copyright {{.Year}} {{.Holder}}
+SPDX-License-Identifier: Apache-2.0

functions/examples/application-cr/Makefile

@@ -0,0 +1,42 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+.PHONY: generate license fix vet fmt test build tidy image
+
+GOBIN := $(shell go env GOPATH)/bin
+
+build:
+	(cd image && go build -v -o $(GOBIN)/config-function .)
+
+all: generate license build fix vet fmt test lint tidy
+
+fix:
+	(cd image && go fix ./...)
+
+fmt:
+	(cd image && go fmt ./...)
+
+generate:
+	(which $(GOBIN)/mdtogo || go get sigs.k8s.io/kustomize/cmd/mdtogo)
+	(cd image && GOBIN=$(GOBIN) go generate ./...)
+
+license:
+	(which $(GOPATH)/bin/addlicense || go get github.com/google/addlicense)
+	$(GOPATH)/bin/addlicense  -y 2019 -c "The Kubernetes Authors." -f LICENSE_TEMPLATE .
+
+tidy:
+	(cd image && go mod tidy)
+
+lint:
+	(which $(GOBIN)/golangci-lint || go get github.com/golangci/golangci-lint/cmd/golangci-lint@v1.19.1)
+	(cd image && $(GOBIN)/golangci-lint run ./...)
+
+test:
+	(cd image && go test -cover ./...)
+
+vet:
+	(cd image && go vet ./...)
+
+image:
+	docker build image -t gcr.io/kustomize-functions/create-application:v0.1.0
+	docker push gcr.io/kustomize-functions/create-application:v0.1.0

functions/examples/application-cr/README.md

@@ -0,0 +1,30 @@
+# Append Application CR
+
+This is an example of appending an Application CR to a group of resources.
+
+This example is written in `go` and uses the `kyaml` libraries for parsing the
+input and writing the output.  Writing in `go` is not a requirement.
+
+## Function implementation
+
+The function is implemented as an [image](image), and built using `make image`.
+
+The template is implemented as a go program, which reads a collection of input
+Resource configuration, and looks for invalid configuration.
+
+## Function invocation
+
+The function is invoked by authoring a [local Resource](local-resource)
+with `metadata.annotations.[config.kubernetes.io/function]` and running:
+
+    kustomize config run local-resource/ --fn-path config/
+
+This exits non-zero if there is an error.
+
+## Running the Example
+
+Run the validator with:
+
+    kustomize config run local-resource/ --fn-path config/
+
+This will append an Application CR.  

functions/examples/application-cr/config/fn-config.yaml

@@ -0,0 +1,13 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+apiVersion: examples.config.kubernetes.io/v1beta1
+kind: CreateApp
+metadata:
+  annotations:
+    config.kubernetes.io/function: |
+      container:
+        image: gcr.io/kustomize-functions/create-application:v0.1.0
+spec:
+  managedBy: jingfang
+  name: example-app
+  namespace: example-namespace

functions/examples/application-cr/image/Dockerfile

@@ -0,0 +1,15 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+FROM golang:1.13-stretch
+ENV CGO_ENABLED=0
+WORKDIR /go/src/
+COPY go.mod .
+COPY go.sum .
+RUN go mod download
+COPY main.go .
+RUN go build -v -o /usr/local/bin/config-function ./
+
+FROM alpine:latest
+COPY --from=0 /usr/local/bin/config-function /usr/local/bin/config-function
+CMD ["config-function"]

functions/examples/application-cr/image/go.mod

@@ -0,0 +1,13 @@
+module sigs.k8s.io/kustomize/functions/examples/application-cr
+
+go 1.13
+
+require (
+	github.com/gogo/protobuf v1.3.1 // indirect
+	github.com/google/gofuzz v1.1.0 // indirect
+	golang.org/x/net v0.0.0-20200202094626-16171245cfb2 // indirect
+	k8s.io/apimachinery v0.17.2
+	sigs.k8s.io/application v0.8.2-0.20200228023238-a3b16d81fa81
+	sigs.k8s.io/kustomize/kyaml v0.1.1-0.20200227221838-a24cc4d305f4
+	sigs.k8s.io/yaml v1.1.0
+)

functions/examples/application-cr/image/go.sum

@@ -0,0 +1,520 @@
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functions/examples/application-cr/image/main.go

@@ -0,0 +1,160 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package main implements adding an Application CR to a group of resources and
+// is run with `kustomize config run -- DIR/`.
+package main
+
+import (
+	"fmt"
+	"os"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/application/api/v1beta1"
+	yaml2 "sigs.k8s.io/yaml"
+
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+func appCR() error {
+	rw := &kio.ByteReadWriter{
+		Reader:                os.Stdin,
+		Writer:                os.Stdout,
+		OmitReaderAnnotations: true,
+		KeepReaderAnnotations: true,
+	}
+	p := kio.Pipeline{
+		Inputs:  []kio.Reader{rw}, // read the inputs into a slice
+		Filters: []kio.Filter{appCRFilter{rw: rw}},
+		Outputs: []kio.Writer{rw}, // copy the inputs to the output
+	}
+	if err := p.Execute(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func main() {
+	if err := appCR(); err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+}
+
+// appCRFilter implements kio.Filter
+type appCRFilter struct {
+	rw *kio.ByteReadWriter
+}
+
+// define the input API schema as a struct
+type API struct {
+	Spec struct {
+		ManagedBy string `yaml:"managedBy"`
+
+		Name string `yaml:"name"`
+
+		Namespace string `yaml:"namespace"`
+
+		Descriptor v1beta1.Descriptor `yaml:"descriptor,omitempty"`
+	} `yaml:"spec"`
+}
+
+// Filter checks each resource for validity, otherwise returning an error.
+func (f appCRFilter) Filter(in []*yaml.RNode) ([]*yaml.RNode, error) {
+	api := f.parseAPI()
+
+	groupKinds, err := getGroupKinds(in)
+	if err != nil {
+		return nil, err
+	}
+
+	app, err := addApplicationCR(api, groupKinds)
+	if err != nil {
+		return nil, err
+	}
+	err = addApplicationLabel(api.Spec.Name, in)
+	if err != nil {
+		return nil, err
+	}
+	if app != nil {
+		return append(in, app), nil
+	}
+	return in, nil
+
+}
+
+// parseAPI parses the functionConfig into an API struct.
+func (f *appCRFilter) parseAPI() API {
+	// parse the input function config -- TODO: simplify this
+	var api API
+	if err := yaml.Unmarshal([]byte(f.rw.FunctionConfig.MustString()), &api); err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+
+	return api
+}
+
+func getGroupKinds(in []*yaml.RNode) ([]metav1.GroupKind, error) {
+	var groupKinds []metav1.GroupKind
+	for _, r := range in {
+		meta, err := r.GetMeta()
+		if err != nil {
+			return nil, err
+		}
+		gvk := schema.FromAPIVersionAndKind(meta.APIVersion, meta.Kind)
+
+		found := false
+		for _, gk := range groupKinds {
+			if gk.Group == gvk.Group && gk.Kind == gvk.Kind {
+				break
+			}
+		}
+		if !found {
+			groupKinds = append(groupKinds, metav1.GroupKind{
+				Group: gvk.Group,
+				Kind:  gvk.Kind,
+			})
+		}
+	}
+	return groupKinds, nil
+}
+
+func addApplicationCR(api API, groupKinds []metav1.GroupKind) (*yaml.RNode, error) {
+	app := v1beta1.Application{
+		TypeMeta: metav1.TypeMeta{
+			APIVersion: "app.k8s.io/v1beta1",
+			Kind:       "Application",
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Namespace:   api.Spec.Namespace,
+			Name:        api.Spec.Name,
+			Labels:      map[string]string{"app.kubernetes.io/name": api.Spec.Name},
+			Annotations: map[string]string{"app.kubernetes.io/managed-by": api.Spec.ManagedBy},
+		},
+		Spec: v1beta1.ApplicationSpec{
+			ComponentGroupKinds: groupKinds,
+			Descriptor:          api.Spec.Descriptor,
+			Selector: &metav1.LabelSelector{
+				MatchLabels: map[string]string{"app.kubernetes.io/name": api.Spec.Name},
+			},
+		},
+	}
+
+	data, err := yaml2.Marshal(app)
+	if err != nil {
+		return nil, err
+	}
+	return yaml.Parse(string(data))
+}
+
+func addApplicationLabel(name string, in []*yaml.RNode) error {
+	for _, r := range in {
+		if _, err := r.Pipe(yaml.SetLabel("app.kubernetes.io/name", name)); err != nil {
+			return err
+		}
+	}
+	return nil
+}

functions/examples/application-cr/image/main_test.go

@@ -0,0 +1,251 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package main implements adding an Application CR to a group of resources and
+// is run with `kustomize config run -- DIR/`.
+package main
+
+import (
+	"bytes"
+	"io"
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+var input = `apiVersion: config.kubernetes.io/v1alpha1
+kind: ResourceList
+items:
+- apiVersion: v1
+  kind: ConfigMap
+  metadata:
+    name: the-map
+    annotations:
+      config.kubernetes.io/index: '0'
+      config.kubernetes.io/path: 'example.yaml'
+  data:
+    altGreeting: "Good Morning!"
+    enableRisky: "false"
+- apiVersion: apps/v1
+  kind: Deployment
+  metadata:
+    name: the-deployment
+    annotations:
+      config.kubernetes.io/index: '1'
+      config.kubernetes.io/path: 'example.yaml'
+  spec:
+    replicas: 3
+    template:
+      metadata:
+        labels:
+          deployment: hello
+      spec:
+        containers:
+        - name: the-container
+          image: monopole/hello:1
+          command: ["/hello", "--port=8080", "--enableRiskyFeature=$(ENABLE_RISKY)"]
+          ports:
+          - containerPort: 8080
+          env:
+          - name: ALT_GREETING
+            valueFrom:
+              configMapKeyRef:
+                name: the-map
+                key: altGreeting
+          - name: ENABLE_RISKY
+            valueFrom:
+              configMapKeyRef:
+                name: the-map
+                key: enableRisky
+- kind: Service
+  apiVersion: v1
+  metadata:
+    name: the-service
+    annotations:
+      config.kubernetes.io/index: '2'
+      config.kubernetes.io/path: 'example.yaml'
+  spec:
+    selector:
+      deployment: hello
+    type: LoadBalancer
+    ports:
+    - protocol: TCP
+      port: 8666
+      targetPort: 8080
+functionConfig:
+  # Copyright 2019 The Kubernetes Authors.
+  # SPDX-License-Identifier: Apache-2.0
+  apiVersion: examples.config.kubernetes.io/v1beta1
+  kind: CreateApp
+  spec:
+    managedBy: jingfang
+    name: example-app
+    namespace: example-namespace
+    descriptor:
+      links:
+      - description: About
+        url: https://worldpress.org/
+      - description: web server dashboard
+        url: https://metrics/internal/worldpress-01/web-app
+`
+
+var output = `apiVersion: config.kubernetes.io/v1alpha1
+kind: ResourceList
+items:
+- apiVersion: v1
+  kind: ConfigMap
+  metadata:
+    name: the-map
+    annotations:
+      config.kubernetes.io/index: '0'
+      config.kubernetes.io/path: 'example.yaml'
+    labels:
+      app.kubernetes.io/name: 'example-app'
+  data:
+    altGreeting: "Good Morning!"
+    enableRisky: "false"
+- apiVersion: apps/v1
+  kind: Deployment
+  metadata:
+    name: the-deployment
+    annotations:
+      config.kubernetes.io/index: '1'
+      config.kubernetes.io/path: 'example.yaml'
+    labels:
+      app.kubernetes.io/name: 'example-app'
+  spec:
+    replicas: 3
+    template:
+      metadata:
+        labels:
+          deployment: hello
+      spec:
+        containers:
+        - name: the-container
+          image: monopole/hello:1
+          command: ["/hello", "--port=8080", "--enableRiskyFeature=$(ENABLE_RISKY)"]
+          ports:
+          - containerPort: 8080
+          env:
+          - name: ALT_GREETING
+            valueFrom:
+              configMapKeyRef:
+                name: the-map
+                key: altGreeting
+          - name: ENABLE_RISKY
+            valueFrom:
+              configMapKeyRef:
+                name: the-map
+                key: enableRisky
+- kind: Service
+  apiVersion: v1
+  metadata:
+    name: the-service
+    annotations:
+      config.kubernetes.io/index: '2'
+      config.kubernetes.io/path: 'example.yaml'
+    labels:
+      app.kubernetes.io/name: 'example-app'
+  spec:
+    selector:
+      deployment: hello
+    type: LoadBalancer
+    ports:
+    - protocol: TCP
+      port: 8666
+      targetPort: 8080
+- apiVersion: app.k8s.io/v1beta1
+  kind: Application
+  metadata:
+    annotations:
+      app.kubernetes.io/managed-by: jingfang
+    creationTimestamp: null
+    labels:
+      app.kubernetes.io/name: example-app
+    name: example-app
+    namespace: example-namespace
+  spec:
+    componentKinds:
+    - group: ""
+      kind: ConfigMap
+    - group: apps
+      kind: Deployment
+    - group: ""
+      kind: Service
+    descriptor:
+      links:
+      - description: About
+        url: https://worldpress.org/
+      - description: web server dashboard
+        url: https://metrics/internal/worldpress-01/web-app
+    selector:
+      matchLabels:
+        app.kubernetes.io/name: example-app
+  status: {}
+functionConfig:
+  # Copyright 2019 The Kubernetes Authors.
+  # SPDX-License-Identifier: Apache-2.0
+  apiVersion: examples.config.kubernetes.io/v1beta1
+  kind: CreateApp
+  spec:
+    managedBy: jingfang
+    name: example-app
+    namespace: example-namespace
+    descriptor:
+      links:
+      - description: About
+        url: https://worldpress.org/
+      - description: web server dashboard
+        url: https://metrics/internal/worldpress-01/web-app
+`
+
+func Test(t *testing.T) {
+	oldStdin := os.Stdin
+	oldStdout := os.Stdout
+	defer func() {
+		os.Stdin = oldStdin
+		os.Stdout = oldStdout
+	}()
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	outC := make(chan string)
+	go func() {
+		var buf bytes.Buffer
+		_, err := io.Copy(&buf, r)
+		if err != nil {
+			outC <- ""
+		}
+		outC <- buf.String()
+	}()
+
+	tmpfile, err := ioutil.TempFile("", "test-input")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.Remove(tmpfile.Name()) // noerrcheck
+	if _, err := tmpfile.Write([]byte(input)); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := tmpfile.Seek(0, 0); err != nil {
+		t.Fatal(err)
+	}
+	os.Stdin = tmpfile
+
+	err = appCR()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := tmpfile.Close(); err != nil {
+		t.Fatal(err)
+	}
+
+	if err := w.Close(); err != nil {
+		t.Fatal(err)
+	}
+
+	out := <-outC
+	if out != output {
+		t.Fatalf("expected %s\nbut got %s\n", output, out)
+	}
+}

functions/examples/application-cr/local-resource/example.yaml

@@ -0,0 +1,52 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: the-map
+data:
+  altGreeting: "Good Morning!"
+  enableRisky: "false"
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: the-deployment
+spec:
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        deployment: hello
+    spec:
+      containers:
+        - name: the-container
+          image: monopole/hello:1
+          command: ["/hello", "--port=8080", "--enableRiskyFeature=$(ENABLE_RISKY)"]
+          ports:
+            - containerPort: 8080
+          env:
+            - name: ALT_GREETING
+              valueFrom:
+                configMapKeyRef:
+                  name: the-map
+                  key: altGreeting
+            - name: ENABLE_RISKY
+              valueFrom:
+                configMapKeyRef:
+                  name: the-map
+                  key: enableRisky
+---
+kind: Service
+apiVersion: v1
+metadata:
+  name: the-service
+spec:
+  selector:
+    deployment: hello
+  type: LoadBalancer
+  ports:
+    - protocol: TCP
+      port: 8666
+      targetPort: 8080

hack/go.mod

@@ -0,0 +1,7 @@
+module sigs.k8s.io/kustomize/hack
+
+go 1.14
+
+require github.com/golangci/golangci-lint v1.23.8
+
+exclude github.com/golangci/golangci-lint v1.24.0

hack/go.sum

@@ -0,0 +1,351 @@
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kyaml/comments/comments.go

@@ -0,0 +1,56 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package comments
+
+import (
+	"sigs.k8s.io/kustomize/kyaml/openapi"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+	"sigs.k8s.io/kustomize/kyaml/yaml/walk"
+)
+
+// CopyComments recursively copies the comments on fields in from to fields in to
+func CopyComments(from, to *yaml.RNode) error {
+	// walk the fields copying comments
+	_, err := walk.Walker{
+		Sources:            []*yaml.RNode{from, to},
+		Visitor:            &copier{},
+		VisitKeysAsScalars: true}.Walk()
+	return err
+}
+
+// copier implements walk.Visitor, and copies comments to fields shared between 2 instances
+// of a resource
+type copier struct{}
+
+func (c *copier) VisitMap(s walk.Sources, _ *openapi.ResourceSchema) (*yaml.RNode, error) {
+	copy(s.Dest(), s.Origin())
+	return s.Dest(), nil
+}
+
+func (c *copier) VisitScalar(s walk.Sources, _ *openapi.ResourceSchema) (*yaml.RNode, error) {
+	copy(s.Dest(), s.Origin())
+	return s.Dest(), nil
+}
+
+func (c *copier) VisitList(s walk.Sources, _ *openapi.ResourceSchema, _ walk.ListKind) (
+	*yaml.RNode, error) {
+	copy(s.Dest(), s.Origin())
+	return s.Dest(), nil
+}
+
+// copy copies the comment from one field to another
+func copy(from, to *yaml.RNode) {
+	if from == nil || to == nil {
+		return
+	}
+	if from.YNode().LineComment != "" {
+		to.YNode().LineComment = from.YNode().LineComment
+	}
+	if from.YNode().HeadComment != "" {
+		to.YNode().HeadComment = from.YNode().HeadComment
+	}
+	if from.YNode().FootComment != "" {
+		to.YNode().FootComment = from.YNode().FootComment
+	}
+}

kyaml/fieldmeta/fieldmeta.go

@@ -5,6 +5,7 @@ package fieldmeta
 
 import (
 	"encoding/json"
+	"reflect"
 	"strconv"
 	"strings"
 
@@ -36,16 +37,29 @@ type PartialFieldSetter struct {
 	Value string `yaml:"value" json:"value"`
 }
 
+// IsEmpty returns true if the FieldMeta has any empty Schema
+func (fm *FieldMeta) IsEmpty() bool {
+	if fm == nil {
+		return true
+	}
+	return reflect.DeepEqual(fm.Schema, spec.Schema{})
+}
+
 // Read reads the FieldMeta from a node
 func (fm *FieldMeta) Read(n *yaml.RNode) error {
-	if n.YNode().LineComment != "" {
-		v := strings.TrimLeft(n.YNode().LineComment, "#")
+	// check for metadata on head and line comments
+	comments := []string{n.YNode().LineComment, n.YNode().HeadComment}
+	for _, c := range comments {
+		if c == "" {
+			continue
+		}
+		c := strings.TrimLeft(c, "#")
 		// if it doesn't Unmarshal that is fine, it means there is no metadata
 		// other comments are valid, they just don't parse
 
-		// TODO: consider most sophisticated parsing techniques similar to what is used
+		// TODO: consider more sophisticated parsing techniques similar to what is used
 		// for go struct tags.
-		if err := fm.Schema.UnmarshalJSON([]byte(v)); err != nil {
+		if err := fm.Schema.UnmarshalJSON([]byte(c)); err != nil {
 			// note: don't return an error if the comment isn't a fieldmeta struct
 			return nil
 		}
@@ -126,11 +140,11 @@ func (it FieldValueType) Validate(value string) error {
 func (it FieldValueType) Tag() string {
 	switch it {
 	case String:
-		return "!!str"
+		return yaml.StringTag
 	case Bool:
-		return "!!bool"
+		return yaml.BoolTag
 	case Int:
-		return "!!int"
+		return yaml.IntTag
 	}
 	return ""
 }
@@ -138,17 +152,17 @@ func (it FieldValueType) Tag() string {
 func (it FieldValueType) TagForValue(value string) string {
 	switch it {
 	case String:
-		return "!!str"
+		return yaml.StringTag
 	case Bool:
 		if _, err := strconv.ParseBool(string(it)); err != nil {
 			return ""
 		}
-		return "!!bool"
+		return yaml.BoolTag
 	case Int:
 		if _, err := strconv.ParseInt(string(it), 0, 32); err != nil {
 			return ""
 		}
-		return "!!int"
+		return yaml.IntTag
 	}
 	return ""
 }

kyaml/go.mod

@@ -6,9 +6,12 @@ require (
 	github.com/davecgh/go-spew v1.1.1
 	github.com/go-errors/errors v1.0.1
 	github.com/go-openapi/spec v0.19.5
+	github.com/qri-io/starlib v0.4.2-0.20200213133954-ff2e8cd5ef8d
 	github.com/sergi/go-diff v1.1.0
 	github.com/stretchr/testify v1.4.0
 	github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca
-	gopkg.in/yaml.v2 v2.2.4
-	gopkg.in/yaml.v3 v3.0.0-20191026110619-0b21df46bc1d
+	go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5
+	golang.org/x/net v0.0.0-20191004110552-13f9640d40b9 // indirect
+	gopkg.in/yaml.v2 v2.2.7
+	gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2
 )

kyaml/go.sum

@@ -1,10 +1,21 @@
+github.com/360EntSecGroup-Skylar/excelize v1.4.1 h1:l55mJb6rkkaUzOpSsgEeKYtS6/0gHwBYyfo5Jcjv/Ks=
+github.com/360EntSecGroup-Skylar/excelize v1.4.1/go.mod h1:vnax29X2usfl7HHkBrX5EvSCJcmH3dT9luvxzu8iGAE=
+github.com/PuerkitoBio/goquery v1.5.0 h1:uGvmFXOA73IKluu/F84Xd1tt/z07GYm8X49XKHP7EJk=
+github.com/PuerkitoBio/goquery v1.5.0/go.mod h1:qD2PgZ9lccMbQlc7eEOjaeRlFQON7xY8kdmcsrnKqMg=
 github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI=
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
+github.com/andybalholm/cascadia v1.0.0 h1:hOCXnnZ5A+3eVDX8pvgl4kofXv2ELss0bKcqRySc45o=
+github.com/andybalholm/cascadia v1.0.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dustmop/soup v1.1.2-0.20190516214245-38228baa104e h1:44fmjqDtdCiUNlSjJVp+w1AOs6na3Y6Ai0aIeseFjkI=
+github.com/dustmop/soup v1.1.2-0.20190516214245-38228baa104e/go.mod h1:CgNC6SGbT+Xb8wGGvzilttZL1mc5sQ/5KkcxsZttMIk=
 github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
 github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
 github.com/go-openapi/jsonpointer v0.19.2/go.mod h1:3akKfEdA7DF1sugOqz1dVQHBcuDBPKZGEoHC/NkiQRg=
@@ -25,32 +36,48 @@ github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e h1:hB2xlXdHp/pmPZq0y3QnmWAArdw9PqbmotexnWx/FU8=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
+github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 h1:RWengNIwukTxcDr9M+97sNutRR1RKhG96O6jWumTTnw=
+github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826/go.mod h1:TaXosZuwdSHYgviHp1DAtfrULt5eUgsSMsZf+YrPgl8=
+github.com/paulmach/orb v0.1.3 h1:Wa1nzU269Zv7V9paVEY1COWW8FCqv4PC/KJRbJSimpM=
+github.com/paulmach/orb v0.1.3/go.mod h1:VFlX/8C+IQ1p6FTRRKzKoOPJnvEtA5G0Veuqwbu//Vk=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/qri-io/starlib v0.4.2-0.20200213133954-ff2e8cd5ef8d h1:K6eOUihrFLdZjZnA4XlRp864fmWXv9YTIk7VPLhRacA=
+github.com/qri-io/starlib v0.4.2-0.20200213133954-ff2e8cd5ef8d/go.mod h1:7DPO4domFU579Ga6E61sB9VFNaniPVwJP5C4bBCu3wA=
 github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.3-0.20181224173747-660f15d67dbb/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca h1:1CFlNzQhALwjS9mBAUkycX616GzgsuYUOCHA5+HSlXI=
 github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca/go.mod h1:ce1O1j6UtZfjr22oyGxGLbauSBp2YVXpARAosm7dHBg=
+go.starlark.net v0.0.0-20190528202925-30ae18b8564f/go.mod h1:c1/X6cHgvdXj6pUlmWKMkuqRnW4K8x2vwt6JAaaircg=
+go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5 h1:+FNtrFTmVw0YZGpBGX56XDee331t6JAXeK2bcyhLOOc=
+go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5/go.mod h1:nmDLcffg48OtT/PSW0Hg7FvpRQsQh5OSqIylirxKC7o=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297 h1:k7pJ2yAPLPgbskkFdhRCsA77k2fySZ1zf2zCjvQCiIM=
 golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20191004110552-13f9640d40b9 h1:rjwSpXsdiK0dV8/Naq3kAw9ymfAeJIyd0upUIElB+lI=
+golang.org/x/net v0.0.0-20191004110552-13f9640d40b9/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20191002063906-3421d5a6bb1c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20191026110619-0b21df46bc1d h1:LCPbGQ34PMrwad11aMZ+dbz5SAsq/0ySjRwQ8I9Qwd8=
-gopkg.in/yaml.v3 v3.0.0-20191026110619-0b21df46bc1d/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v2 v2.2.7 h1:VUgggvou5XRW9mHwD/yXxIYSMtY0zoKQf/v226p2nyo=
+gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2 h1:XZx7nhd5GMaZpmDaEHFVafUZC7ya0fuo7cSJ3UCKYmM=
+gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

kyaml/openapi/openapi.go

@@ -7,6 +7,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"reflect"
 	"sync"
 
 	"github.com/go-openapi/spec"
@@ -32,6 +33,14 @@ type ResourceSchema struct {
 	Schema *spec.Schema
 }
 
+// IsEmpty returns true if the ResourceSchema is empty
+func (rs *ResourceSchema) IsEmpty() bool {
+	if rs == nil || rs.Schema == nil {
+		return true
+	}
+	return reflect.DeepEqual(*rs.Schema, spec.Schema{})
+}
+
 // SchemaForResourceType returns the Schema for the given Resource
 // TODO(pwittrock): create a version of this function that will return a schema
 // which can be used for duck-typed Resources -- e.g. contains common fields such
@@ -193,15 +202,19 @@ func SuppressBuiltInSchemaUse() {
 }
 
 // Elements returns the Schema for the elements of an array.
-func (r *ResourceSchema) Elements() *ResourceSchema {
+func (rs *ResourceSchema) Elements() *ResourceSchema {
 	// load the schema from swagger.json
 	initSchema()
 
-	if len(r.Schema.Type) != 1 || r.Schema.Type[0] != "array" {
+	if len(rs.Schema.Type) != 1 || rs.Schema.Type[0] != "array" {
 		// either not an array, or array has multiple types
 		return nil
 	}
-	s := *r.Schema.Items.Schema
+	if rs == nil || rs.Schema == nil || rs.Schema.Items == nil {
+		// no-scheme for the items
+		return nil
+	}
+	s := *rs.Schema.Items.Schema
 	for s.Ref.String() != "" {
 		sc, e := Resolve(&s.Ref)
 		if e != nil {
@@ -219,8 +232,8 @@ const Elements = "[]"
 // Field is called.
 // If any Field or Elements call returns nil, then Lookup returns
 // nil immediately.
-func (r *ResourceSchema) Lookup(path ...string) *ResourceSchema {
-	s := r
+func (rs *ResourceSchema) Lookup(path ...string) *ResourceSchema {
+	s := rs
 	for _, p := range path {
 		if s == nil {
 			break
@@ -235,19 +248,19 @@ func (r *ResourceSchema) Lookup(path ...string) *ResourceSchema {
 }
 
 // Field returns the Schema for a field.
-func (r *ResourceSchema) Field(field string) *ResourceSchema {
+func (rs *ResourceSchema) Field(field string) *ResourceSchema {
 	// load the schema from swagger.json
 	initSchema()
 
 	// locate the Schema
-	s, found := r.Schema.Properties[field]
+	s, found := rs.Schema.Properties[field]
 	switch {
 	case found:
 		// no-op, continue with s as the schema
-	case r.Schema.AdditionalProperties != nil && r.Schema.AdditionalProperties.Schema != nil:
+	case rs.Schema.AdditionalProperties != nil && rs.Schema.AdditionalProperties.Schema != nil:
 		// map field type -- use Schema of the value
 		// (the key doesn't matter, they all have the same value type)
-		s = *r.Schema.AdditionalProperties.Schema
+		s = *rs.Schema.AdditionalProperties.Schema
 	default:
 		// no Schema found from either swagger.json or line comments
 		return nil
@@ -267,14 +280,14 @@ func (r *ResourceSchema) Field(field string) *ResourceSchema {
 }
 
 // PatchStrategyAndKey returns the patch strategy and merge key extensions
-func (r *ResourceSchema) PatchStrategyAndKey() (string, string) {
-	ps, found := r.Schema.Extensions[kubernetesPatchStrategyExtensionKey]
+func (rs *ResourceSchema) PatchStrategyAndKey() (string, string) {
+	ps, found := rs.Schema.Extensions[kubernetesPatchStrategyExtensionKey]
 	if !found {
 		// merge key and patch strategy must appear together
 		return "", ""
 	}
 
-	mk, found := r.Schema.Extensions[kubernetesMergeKeyExtensionKey]
+	mk, found := rs.Schema.Extensions[kubernetesMergeKeyExtensionKey]
 	if !found {
 		// merge key and patch strategy must appear together
 		return "", ""

kyaml/setters2/add.go

@@ -43,9 +43,14 @@ func (a *Add) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 	return object, accept(a, object)
 }
 
+func (a *Add) visitSequence(_ *yaml.RNode, _ string, _ *openapi.ResourceSchema) error {
+	// no-op
+	return nil
+}
+
 // visitScalar implements visitor
 // visitScalar will set the field metadata on each scalar field whose name + value match
-func (a *Add) visitScalar(object *yaml.RNode, p string) error {
+func (a *Add) visitScalar(object *yaml.RNode, p string, _ *openapi.ResourceSchema) error {
 	// check if the field matches
 	if a.FieldName != "" && !strings.HasSuffix(p, a.FieldName) {
 		return nil
@@ -96,6 +101,9 @@ type SetterDefinition struct {
 	// Value is the value of the setter.
 	Value string `yaml:"value"`
 
+	// ListValues are the value of a list setter.
+	ListValues []string `yaml:"listValues,omitempty"`
+
 	// SetBy is the person or role that last set the value.
 	SetBy string `yaml:"setBy,omitempty"`
 
@@ -104,6 +112,17 @@ type SetterDefinition struct {
 
 	// Count is the number of fields set by this setter.
 	Count int `yaml:"count,omitempty"`
+
+	// Type is the type of the setter value.
+	Type string `yaml:"type,omitempty"`
+
+	// EnumValues is a map of possible setter values to actual field values.
+	// If EnumValues is specified, then the value set the by user 1) MUST
+	// be present in the enumValues map as a key, and 2) the map entry value
+	// MUST be used as the value to set in the configuration (rather than the key)
+	// Example -- may be used for t-shirt sizing values by allowing cpu to be
+	// set to small, medium or large, and then mapping these values to cpu values -- 0.5, 2, 8
+	EnumValues map[string]string `yaml:"enumValues,omitempty"`
 }
 
 func (sd SetterDefinition) AddToFile(path string) error {
@@ -127,6 +146,15 @@ func (sd SetterDefinition) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 		sd.Description = ""
 	}
 
+	if sd.Type != "" {
+		err = def.PipeE(yaml.FieldSetter{Name: "type", StringValue: sd.Type})
+		if err != nil {
+			return nil, err
+		}
+		// don't write the type to the extension
+		sd.Type = ""
+	}
+
 	ext, err := def.Pipe(yaml.LookupCreate(yaml.MappingNode, K8sCliExtensionKey))
 	if err != nil {
 		return nil, err

kyaml/setters2/set.go

@@ -8,7 +8,10 @@ import (
 
 	"github.com/go-openapi/spec"
 	"sigs.k8s.io/kustomize/kyaml/errors"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	"sigs.k8s.io/kustomize/kyaml/kio/kioutil"
 	"sigs.k8s.io/kustomize/kyaml/openapi"
+	"sigs.k8s.io/kustomize/kyaml/sets"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
@@ -27,10 +30,36 @@ func (s *Set) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 	return object, accept(s, object)
 }
 
+// visitSequence will perform setters for sequences
+func (s *Set) visitSequence(object *yaml.RNode, p string, schema *openapi.ResourceSchema) error {
+	ext, err := getExtFromComment(schema)
+	if err != nil {
+		return err
+	}
+	if ext == nil || ext.Setter == nil || ext.Setter.Name != s.Name ||
+		len(ext.Setter.ListValues) == 0 {
+		// setter was not invoked for this sequence
+		return nil
+	}
+	s.Count++
+
+	// set the values on the sequences
+	var elements []*yaml.Node
+	for i := range ext.Setter.ListValues {
+		v := ext.Setter.ListValues[i]
+		n := yaml.NewScalarRNode(v).YNode()
+		n.Style = yaml.DoubleQuotedStyle
+		elements = append(elements, n)
+	}
+	object.YNode().Content = elements
+	object.YNode().Style = yaml.FoldedStyle
+	return nil
+}
+
 // visitScalar
-func (s *Set) visitScalar(object *yaml.RNode, p string) error {
+func (s *Set) visitScalar(object *yaml.RNode, p string, schema *openapi.ResourceSchema) error {
 	// get the openAPI for this field describing how to apply the setter
-	ext, err := getExtFromComment(object)
+	ext, err := getExtFromComment(schema)
 	if err != nil {
 		return err
 	}
@@ -39,13 +68,13 @@ func (s *Set) visitScalar(object *yaml.RNode, p string) error {
 	}
 
 	// perform a direct set of the field if it matches
-	if s.set(object, ext) {
+	if s.set(object, ext, schema.Schema) {
 		s.Count++
 		return nil
 	}
 
 	// perform a substitution of the field if it matches
-	sub, err := s.substitute(object, ext)
+	sub, err := s.substitute(object, ext, schema.Schema)
 	if err != nil {
 		return err
 	}
@@ -57,7 +86,7 @@ func (s *Set) visitScalar(object *yaml.RNode, p string) error {
 
 // substitute updates the value of field from ext if ext contains a substitution that
 // depends on a setter whose name matches s.Name.
-func (s *Set) substitute(field *yaml.RNode, ext *cliExtension) (bool, error) {
+func (s *Set) substitute(field *yaml.RNode, ext *cliExtension, _ *spec.Schema) (bool, error) {
 	nameMatch := false
 
 	// check partial setters to see if they contain the setter as part of a
@@ -86,8 +115,15 @@ func (s *Set) substitute(field *yaml.RNode, ext *cliExtension) (bool, error) {
 		if err != nil {
 			return false, errors.Wrap(err)
 		}
-		// substitute the setters current value into the substitution pattern
-		p = strings.ReplaceAll(p, v.Marker, subSetter.Setter.Value)
+
+		if val, found := subSetter.Setter.EnumValues[subSetter.Setter.Value]; found {
+			// the setter has an enum-map.  we should replace the marker with the
+			// enum value looked up from the map rather than the enum key
+			p = strings.ReplaceAll(p, v.Marker, val)
+		} else {
+			// substitute the setters current value into the substitution pattern
+			p = strings.ReplaceAll(p, v.Marker, subSetter.Setter.Value)
+		}
 
 		if subSetter.Setter.Name == s.Name {
 			// the substitution depends on the specified setter
@@ -102,11 +138,15 @@ func (s *Set) substitute(field *yaml.RNode, ext *cliExtension) (bool, error) {
 	// TODO(pwittrock): validate the field value
 
 	field.YNode().Value = p
+
+	// substitutions are always strings
+	field.YNode().Tag = yaml.StringTag
+
 	return true, nil
 }
 
 // set applies the value from ext to field if its name matches s.Name
-func (s *Set) set(field *yaml.RNode, ext *cliExtension) bool {
+func (s *Set) set(field *yaml.RNode, ext *cliExtension, sch *spec.Schema) bool {
 	// check full setter
 	if ext.Setter == nil || ext.Setter.Name != s.Name {
 		return false
@@ -114,8 +154,18 @@ func (s *Set) set(field *yaml.RNode, ext *cliExtension) bool {
 
 	// TODO(pwittrock): validate the field value
 
+	if val, found := ext.Setter.EnumValues[ext.Setter.Value]; found {
+		// the setter has an enum-map.  we should replace the marker with the
+		// enum value looked up from the map rather than the enum key
+		field.YNode().Value = val
+		return true
+	}
+
 	// this has a full setter, set its value
 	field.YNode().Value = ext.Setter.Value
+
+	// format the node so it is quoted if it is a string
+	yaml.FormatNonStringStyle(field.YNode(), *sch)
 	return true
 }
 
@@ -126,6 +176,9 @@ type SetOpenAPI struct {
 	// Value is the current value of the setter
 	Value string `yaml:"value"`
 
+	// ListValue is the current value for a list of items
+	ListValues []string `yaml:"listValue"`
+
 	Description string `yaml:"description"`
 
 	SetBy string `yaml:"setBy"`
@@ -138,22 +191,100 @@ func (s SetOpenAPI) UpdateFile(path string) error {
 
 func (s SetOpenAPI) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 	key := SetterDefinitionPrefix + s.Name
-	def, err := object.Pipe(yaml.Lookup(
-		"openAPI", "definitions", key, "x-k8s-cli", "setter"))
+	oa, err := object.Pipe(yaml.Lookup("openAPI", "definitions", key))
+	if err != nil {
+		return nil, err
+	}
+	if oa == nil {
+		return nil, errors.Errorf("no setter %s found", s.Name)
+	}
+	def, err := oa.Pipe(yaml.Lookup("x-k8s-cli", "setter"))
 	if err != nil {
 		return nil, err
 	}
 	if def == nil {
 		return nil, errors.Errorf("no setter %s found", s.Name)
 	}
-	if err := def.PipeE(&yaml.FieldSetter{Name: "value", StringValue: s.Value}); err != nil {
-		return nil, err
+
+	// record the OpenAPI type for the setter
+	var t string
+	if n := oa.Field("type"); n != nil {
+		t = n.Value.YNode().Value
 	}
 
-	if s.SetBy != "" {
-		if err := def.PipeE(&yaml.FieldSetter{Name: "setBy", StringValue: s.SetBy}); err != nil {
+	// if the setter contains an enumValues map, then ensure the set value appears
+	// as a key in the map
+	if values, err := def.Pipe(
+		yaml.Lookup("enumValues")); err != nil {
+		// error looking up the enumValues
+		return nil, err
+	} else if values != nil {
+		// contains enumValues map -- validate the set value against the map entries
+
+		// get the enumValues keys
+		fields, err := values.Fields()
+		if err != nil {
 			return nil, err
 		}
+
+		// search for the user provided value in the set of allowed values
+		var match bool
+		for i := range fields {
+			if fields[i] == s.Value {
+				// found a match, we are good
+				match = true
+				break
+			}
+		}
+		if !match {
+			// no match found -- provide an informative error to the user
+			return nil, errors.Errorf("%s does not match the possible values for %s: [%s]",
+				s.Value, s.Name, strings.Join(fields, ","))
+		}
+	}
+
+	v := yaml.NewScalarRNode(s.Value)
+	// values are always represented as strings the OpenAPI
+	// since the are unmarshalled into strings.  Use double quote style to
+	// ensure this consistently.
+	v.YNode().Tag = yaml.StringTag
+	v.YNode().Style = yaml.DoubleQuotedStyle
+
+	if t != "array" {
+		// set a scalar value
+		if err := def.PipeE(&yaml.FieldSetter{Name: "value", Value: v}); err != nil {
+			return nil, err
+		}
+	} else {
+		// set a list value
+		if err := def.PipeE(&yaml.FieldClearer{Name: "value"}); err != nil {
+			return nil, err
+		}
+		// create the list values
+		var elements []*yaml.Node
+		n := yaml.NewScalarRNode(s.Value).YNode()
+		n.Tag = yaml.StringTag
+		n.Style = yaml.DoubleQuotedStyle
+		elements = append(elements, n)
+		for i := range s.ListValues {
+			v := s.ListValues[i]
+			n := yaml.NewScalarRNode(v).YNode()
+			n.Style = yaml.DoubleQuotedStyle
+			elements = append(elements, n)
+		}
+		l := yaml.NewRNode(&yaml.Node{
+			Kind:    yaml.SequenceNode,
+			Content: elements,
+		})
+
+		def.YNode().Style = yaml.FoldedStyle
+		if err := def.PipeE(&yaml.FieldSetter{Name: "listValues", Value: l}); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := def.PipeE(&yaml.FieldSetter{Name: "setBy", StringValue: s.SetBy}); err != nil {
+		return nil, err
 	}
 
 	if s.Description != "" {
@@ -169,3 +300,39 @@ func (s SetOpenAPI) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 
 	return object, nil
 }
+
+// SetAll applies the set filter for all yaml nodes and only returns the nodes whose
+// corresponding file has at least one node with input setter
+func SetAll(s *Set) kio.Filter {
+	return kio.FilterFunc(func(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
+		filesToUpdate := sets.String{}
+		// for each node record the set fields count before and after filter is applied and
+		// store the corresponding file paths if there is an increment in setters count
+		for i := range nodes {
+			preCount := s.Count
+			_, err := s.Filter(nodes[i])
+			if err != nil {
+				return nil, errors.Wrap(err)
+			}
+			if s.Count > preCount {
+				path, _, err := kioutil.GetFileAnnotations(nodes[i])
+				if err != nil {
+					return nil, errors.Wrap(err)
+				}
+				filesToUpdate.Insert(path)
+			}
+		}
+		var nodesInUpdatedFiles []*yaml.RNode
+		// return only the nodes whose corresponding file has at least one node with input setter
+		for i := range nodes {
+			path, _, err := kioutil.GetFileAnnotations(nodes[i])
+			if err != nil {
+				return nil, errors.Wrap(err)
+			}
+			if filesToUpdate.Has(path) {
+				nodesInUpdatedFiles = append(nodesInUpdatedFiles, nodes[i])
+			}
+		}
+		return nodesInUpdatedFiles, nil
+	})
+}

kyaml/setters2/set_test.go

@@ -15,11 +15,12 @@ import (
 
 func TestSet_Filter(t *testing.T) {
 	var tests = []struct {
-		name     string
-		setter   string
-		openapi  string
-		input    string
-		expected string
+		name        string
+		description string
+		setter      string
+		openapi     string
+		input       string
+		expected    string
 	}{
 		{
 			name:   "set-replicas",
@@ -58,6 +59,184 @@ metadata:
   name: nginx-deployment
 spec:
   replicas: 4 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
+ `,
+		},
+		{
+			name:        "set-foo-type",
+			description: "if a type is specified for a setter, ensure the field is properly quoted",
+			setter:      "foo",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.foo:
+      x-k8s-cli:
+        setter:
+          name: foo
+          value: "4"
+      type: string
+ `,
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: 3 # {"$ref": "#/definitions/io.k8s.cli.setters.foo"}
+ `,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: "4" # {"$ref": "#/definitions/io.k8s.cli.setters.foo"}
+ `,
+		},
+		{
+			name:        "set-foo-type-wrong",
+			description: "if a type is specified for a setter, for the field to the type",
+			setter:      "foo",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.foo:
+      x-k8s-cli:
+        setter:
+          name: foo
+          value: "4"
+      type: boolean
+ `,
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: 3 # {"$ref": "#/definitions/io.k8s.cli.setters.foo"}
+ `,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: !!bool 4 # {"$ref": "#/definitions/io.k8s.cli.setters.foo"}
+ `,
+		},
+		{
+			name:        "set-foo-no-type",
+			description: "if a type is not specified for a setter, keep the existing quoting",
+			setter:      "foo",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.foo:
+      x-k8s-cli:
+        setter:
+          name: foo
+          value: "4"
+ `,
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: 3 # {"$ref": "#/definitions/io.k8s.cli.setters.foo"}
+ `,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: 4 # {"$ref": "#/definitions/io.k8s.cli.setters.foo"}
+ `,
+		},
+		{
+			name:   "set-replicas-enum",
+			setter: "replicas",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.no-match-1':
+      x-k8s-cli:
+        setter:
+          name: no-match-1
+          value: "1"
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "medium"
+          enumValues:
+            small: "1"
+            medium: "5"
+            large: "50"
+    io.k8s.cli.setters.no-match-2':
+      x-k8s-cli:
+        setter:
+          name: no-match-2
+          value: "2"
+ `,
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  replicas: 1 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
+ `,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  replicas: 5 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
+ `,
+		},
+		{
+			name:   "set-replicas-enum-large",
+			setter: "replicas",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.no-match-1':
+      x-k8s-cli:
+        setter:
+          name: no-match-1
+          value: "1"
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "large"
+          enumValues:
+            small: "1"
+            medium: "5"
+            large: "50"
+    io.k8s.cli.setters.no-match-2':
+      x-k8s-cli:
+        setter:
+          name: no-match-2
+          value: "2"
+ `,
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  replicas: 1 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
+ `,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  replicas: 50 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
  `,
 		},
 		{
@@ -155,6 +334,61 @@ spec:
       containers:
       - name: nginx
         image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+ `,
+		},
+		{
+			name:   "substitute-image-name-enum",
+			setter: "image-tag",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.image-name:
+      x-k8s-cli:
+        setter:
+          name: image-name
+          value: "helloworld"
+          enumValues:
+            nginx: gcr.io/nginx
+            helloworld: us.gcr.io/helloworld
+    io.k8s.cli.setters.image-tag:
+      x-k8s-cli:
+        setter:
+          name: image-tag
+          value: "1.8.1"
+    io.k8s.cli.substitutions.image:
+      x-k8s-cli:
+        substitution:
+          name: image
+          pattern: IMAGE_NAME:IMAGE_TAG
+          values:
+          - marker: "IMAGE_NAME"
+            ref: "#/definitions/io.k8s.cli.setters.image-name"
+          - marker: "IMAGE_TAG"
+            ref: "#/definitions/io.k8s.cli.setters.image-tag"
+ `,
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.7.9 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+ `,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: us.gcr.io/helloworld:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
  `,
 		},
 		{
@@ -361,6 +595,76 @@ spec:
       containers:
       - name: nginx
         image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+ `,
+		},
+		{
+			name:   "set-args-list",
+			setter: "args",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.args:
+      x-k8s-cli:
+        type: array
+        setter:
+          name: args
+          listValues: ["1", "2", "3"]
+ `,
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  # {"$ref": "#/definitions/io.k8s.cli.setters.args"}
+  replicas: []
+ `,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  # {"$ref": "#/definitions/io.k8s.cli.setters.args"}
+  replicas:
+  - "1"
+  - "2"
+  - "3"
+ `,
+		},
+		{
+			name:   "set-args-list-replace",
+			setter: "args",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.args:
+      x-k8s-cli:
+        type: array
+        setter:
+          name: args
+          listValues: ["1", "2", "3"]
+ `,
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  # {"$ref": "#/definitions/io.k8s.cli.setters.args"}
+  replicas: ["4", "5"]
+ `,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  # {"$ref": "#/definitions/io.k8s.cli.setters.args"}
+  replicas:
+  - "1"
+  - "2"
+  - "3"
  `,
 		},
 	}
@@ -398,6 +702,160 @@ spec:
 	}
 }
 
+func TestSet_SetAll(t *testing.T) {
+	var tests = []struct {
+		name        string
+		description string
+		setter      string
+		openapi     string
+		input       []string
+		expected    []string
+	}{
+		{
+			name:   "set-replicas-same-file",
+			setter: "replicas",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "4"
+ `,
+			input: []string{`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    config.kubernetes.io/index: '0'
+    config.kubernetes.io/path: 'cluster.yaml'
+spec:
+  replicas: 3 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
+ `, `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment2
+  annotations:
+    config.kubernetes.io/index: '1'
+    config.kubernetes.io/path: 'cluster.yaml'
+spec:
+  replicas: 10
+ `},
+			expected: []string{`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    config.kubernetes.io/index: '0'
+    config.kubernetes.io/path: 'cluster.yaml'
+spec:
+  replicas: 4 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
+ `, `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment2
+  annotations:
+    config.kubernetes.io/index: '1'
+    config.kubernetes.io/path: 'cluster.yaml'
+spec:
+  replicas: 10
+ `},
+		},
+		{
+			name:   "set-replicas-different-file",
+			setter: "replicas",
+			openapi: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "4"
+ `,
+			input: []string{`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    config.kubernetes.io/index: '0'
+    config.kubernetes.io/path: 'cluster.yaml'
+spec:
+  replicas: 3 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
+ `, `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment2
+  annotations:
+    config.kubernetes.io/index: '1'
+    config.kubernetes.io/path: 'another_cluster.yaml'
+spec:
+  replicas: 10
+ `},
+			expected: []string{`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    config.kubernetes.io/index: '0'
+    config.kubernetes.io/path: 'cluster.yaml'
+spec:
+  replicas: 4 # {"$ref": "#/definitions/io.k8s.cli.setters.replicas"}
+ `},
+		},
+	}
+	for i := range tests {
+		test := tests[i]
+		t.Run(test.name, func(t *testing.T) {
+			// reset the openAPI afterward
+			defer openapi.ResetOpenAPI()
+			initSchema(t, test.openapi)
+
+			// parse the input to be modified
+			var inputNodes []*yaml.RNode
+			for _, s := range test.input {
+				r, err := yaml.Parse(s)
+				if !assert.NoError(t, err) {
+					t.FailNow()
+				}
+				inputNodes = append(inputNodes, r)
+			}
+
+			// invoke the setter
+			instance := &Set{Name: test.setter}
+			result, err := SetAll(instance).Filter(inputNodes)
+			if !assert.NoError(t, err) {
+				t.FailNow()
+			}
+
+			// compare the actual and expected output
+			if !assert.NoError(t, err) {
+				t.FailNow()
+			}
+			if !assert.Equal(t, len(result), len(test.expected)) {
+				t.FailNow()
+			}
+
+			for i := range result {
+				actual, _ := result[i].String()
+				actual = strings.TrimSpace(actual)
+				expected := strings.TrimSpace(test.expected[i])
+				if !assert.Equal(t, expected, actual) {
+					t.FailNow()
+				}
+			}
+		})
+	}
+}
+
 // initSchema initializes the openAPI with the definitions from s
 func initSchema(t *testing.T, s string) {
 	// parse out the schema from the input openAPI
@@ -444,6 +902,7 @@ func TestSetOpenAPI_Filter(t *testing.T) {
 		name        string
 		setter      string
 		value       string
+		values      []string
 		input       string
 		expected    string
 		description string
@@ -491,6 +950,29 @@ openAPI:
         setter:
           name: no-match-2
           value: "2"
+`,
+		},
+		{
+			name:   "set-annotation-quoted",
+			setter: "replicas",
+			value:  "3",
+			input: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: 4
+ `,
+			expected: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "3"
 `,
 		},
 		{
@@ -583,6 +1065,137 @@ openAPI:
           value: "2"
 `,
 		},
+		{
+			name:   "set-replicas-set-by-empty",
+			setter: "replicas",
+			value:  "3",
+			input: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.no-match-1':
+      x-k8s-cli:
+        setter:
+          name: no-match-1
+          value: "1"
+          setBy: "package-default"
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "4"
+          setBy: "package-default"
+    io.k8s.cli.setters.no-match-2':
+      x-k8s-cli:
+        setter:
+          name: no-match-2
+          value: "2"
+          setBy: "package-default"
+ `,
+			expected: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.no-match-1':
+      x-k8s-cli:
+        setter:
+          name: no-match-1
+          value: "1"
+          setBy: "package-default"
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "3"
+    io.k8s.cli.setters.no-match-2':
+      x-k8s-cli:
+        setter:
+          name: no-match-2
+          value: "2"
+          setBy: "package-default"
+`,
+		},
+		{
+			name:   "set-replicas-with-enum",
+			setter: "replicas",
+			value:  "baz",
+			input: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.no-match-1':
+      x-k8s-cli:
+        setter:
+          name: no-match-1
+          value: "1"
+          setBy: "package-default"
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "foo"
+          enumValues:
+            foo: bar
+            baz: biz
+    io.k8s.cli.setters.no-match-2':
+      x-k8s-cli:
+        setter:
+          name: no-match-2
+          value: "2"
+          setBy: "package-default"
+ `,
+			expected: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.no-match-1':
+      x-k8s-cli:
+        setter:
+          name: no-match-1
+          value: "1"
+          setBy: "package-default"
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "baz"
+          enumValues:
+            foo: bar
+            baz: biz
+    io.k8s.cli.setters.no-match-2':
+      x-k8s-cli:
+        setter:
+          name: no-match-2
+          value: "2"
+          setBy: "package-default"
+`,
+		},
+		{
+			name:   "set-replicas-fail",
+			setter: "replicas",
+			value:  "hello",
+			input: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.no-match-1':
+      x-k8s-cli:
+        setter:
+          name: no-match-1
+          value: "1"
+          setBy: "package-default"
+    io.k8s.cli.setters.replicas:
+      x-k8s-cli:
+        setter:
+          name: replicas
+          value: "foo"
+          enumValues:
+            foo: bar
+            baz: biz
+    io.k8s.cli.setters.no-match-2':
+      x-k8s-cli:
+        setter:
+          name: no-match-2
+          value: "2"
+          setBy: "package-default"
+ `,
+			err: "hello does not match the possible values for replicas: [foo,baz]",
+		},
 		{
 			name:   "error",
 			setter: "replicas",
@@ -616,6 +1229,33 @@ openAPI:
           value: "2"
  `,
 		},
+
+		{
+			name:   "set-args-list",
+			setter: "args",
+			value:  "2",
+			values: []string{"3", "4"},
+			input: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.args:
+      type: array
+      x-k8s-cli:
+        setter:
+          name: args
+          listValues: ["1"]
+ `,
+			expected: `
+openAPI:
+  definitions:
+    io.k8s.cli.setters.args:
+      type: array
+      x-k8s-cli:
+        setter:
+          name: args
+          listValues: ["2", "3", "4"]
+`,
+		},
 	}
 	for i := range tests {
 		test := tests[i]
@@ -627,7 +1267,7 @@ openAPI:
 
 			// invoke the setter
 			instance := &SetOpenAPI{
-				Name: test.setter, Value: test.value,
+				Name: test.setter, Value: test.value, ListValues: test.values,
 				SetBy: test.setBy, Description: test.description}
 			result, err := instance.Filter(in)
 			if test.err != "" {

kyaml/setters2/settersutil/fieldsetter.go

@@ -7,6 +7,7 @@ import (
 	"sigs.k8s.io/kustomize/kyaml/kio"
 	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/setters2"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 // FieldSetter sets the value for a field setter.
@@ -17,16 +18,35 @@ type FieldSetter struct {
 	// Value is the value to set
 	Value string
 
+	// ListValues contains a list of values to set on a Sequence
+	ListValues []string
+
 	Description string
 
 	SetBy string
+
+	Count int
+
+	OpenAPIPath string
+
+	ResourcesPath string
+}
+
+func (fs *FieldSetter) Filter(input []*yaml.RNode) ([]*yaml.RNode, error) {
+	fs.Count, _ = fs.Set(fs.OpenAPIPath, fs.ResourcesPath)
+	return nil, nil
 }
 
 // Set updates the OpenAPI definitions and resources with the new setter value
 func (fs FieldSetter) Set(openAPIPath, resourcesPath string) (int, error) {
 	// Update the OpenAPI definitions
 	soa := setters2.SetOpenAPI{
-		Name: fs.Name, Value: fs.Value, Description: fs.Description, SetBy: fs.SetBy}
+		Name:        fs.Name,
+		Value:       fs.Value,
+		ListValues:  fs.ListValues,
+		Description: fs.Description,
+		SetBy:       fs.SetBy,
+	}
 	if err := soa.UpdateFile(openAPIPath); err != nil {
 		return 0, err
 	}
@@ -37,11 +57,13 @@ func (fs FieldSetter) Set(openAPIPath, resourcesPath string) (int, error) {
 	}
 
 	// Update the resources with the new value
-	inout := &kio.LocalPackageReadWriter{PackagePath: resourcesPath}
+	// Set NoDeleteFiles to true as SetAll will return only the nodes of files which should be updated and
+	// hence, rest of the files should not be deleted
+	inout := &kio.LocalPackageReadWriter{PackagePath: resourcesPath, NoDeleteFiles: true}
 	s := &setters2.Set{Name: fs.Name}
 	err := kio.Pipeline{
 		Inputs:  []kio.Reader{inout},
-		Filters: []kio.Filter{kio.FilterAll(s)},
+		Filters: []kio.Filter{setters2.SetAll(s)},
 		Outputs: []kio.Writer{inout},
 	}.Execute()
 	return s.Count, err

kyaml/setters2/settersutil/settercreator.go

@@ -19,6 +19,8 @@ type SetterCreator struct {
 
 	SetBy string
 
+	Type string
+
 	// FieldName if set will add the OpenAPI reference to fields with this name or path
 	// FieldName may be the full name of the field, full path to the field, or the path suffix.
 	// e.g. all of the following would match spec.template.spec.containers.image --
@@ -35,7 +37,9 @@ type SetterCreator struct {
 func (c SetterCreator) Create(openAPIPath, resourcesPath string) error {
 	// Update the OpenAPI definitions to hace the setter
 	sd := setters2.SetterDefinition{
-		Name: c.Name, Value: c.FieldValue, Description: c.Description, SetBy: c.SetBy}
+		Name: c.Name, Value: c.FieldValue, Description: c.Description, SetBy: c.SetBy,
+		Type: c.Type,
+	}
 	if err := sd.AddToFile(openAPIPath); err != nil {
 		return err
 	}

kyaml/setters2/settersutil/substitutioncreator.go

@@ -4,9 +4,13 @@
 package settersutil
 
 import (
+	"strings"
+
+	"sigs.k8s.io/kustomize/kyaml/errors"
 	"sigs.k8s.io/kustomize/kyaml/kio"
 	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/setters2"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 // SubstitutionCreator creates or updates a substitution in the OpenAPI definitions, and
@@ -40,6 +44,12 @@ func (c SubstitutionCreator) Create(openAPIPath, resourcesPath string) error {
 		Values:  c.Values,
 		Pattern: c.Pattern,
 	}
+
+	err := c.CreateSettersForSubstitution(openAPIPath)
+	if err != nil {
+		return err
+	}
+
 	if err := d.AddToFile(openAPIPath); err != nil {
 		return err
 	}
@@ -62,3 +72,187 @@ func (c SubstitutionCreator) Create(openAPIPath, resourcesPath string) error {
 		Outputs: []kio.Writer{inout},
 	}.Execute()
 }
+
+// CreateSettersForSubstitution creates the setters for all the references in the substitution
+// values if they don't already exist in openAPIPath file.
+func (c SubstitutionCreator) CreateSettersForSubstitution(openAPIPath string) error {
+	y, err := yaml.ReadFile(openAPIPath)
+	if err != nil {
+		return err
+	}
+
+	m, err := c.GetValuesForMarkers()
+	if err != nil {
+		return err
+	}
+
+	// for each ref in values, check if the setter already exists, if not create them
+	for _, value := range c.Values {
+		obj, err := y.Pipe(yaml.Lookup(
+			// get the setter key from ref. Ex: from #/definitions/io.k8s.cli.setters.image_setter
+			// extract io.k8s.cli.setters.image_setter
+			"openAPI", "definitions", strings.TrimPrefix(value.Ref, "#/definitions/")))
+
+		if err != nil {
+			return err
+		}
+
+		if obj == nil {
+			sd := setters2.SetterDefinition{
+				// get the setter name from ref. Ex: from #/definitions/io.k8s.cli.setters.image_setter
+				// extract image_setter
+				Name:  strings.TrimPrefix(value.Ref, "#/definitions/io.k8s.cli.setters."),
+				Value: m[value.Marker],
+			}
+			err := sd.AddToFile(openAPIPath)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// GetValuesForMarkers parses the pattern and field value to derive values for the
+// markers in the pattern string. Returns error if the marker values can't be derived
+func (c SubstitutionCreator) GetValuesForMarkers() (map[string]string, error) {
+	m := make(map[string]string)
+	indices, err := c.GetStartIndices()
+	if err != nil {
+		return nil, err
+	}
+	fv := c.FieldValue
+	pattern := c.Pattern
+	fvInd := 0
+	patternInd := 0
+	// iterate fv, pattern with indices fvInd, patternInd respectively and when patternInd hits the index of a marker,
+	// freeze patternInd and iterate fvInd and capture string till we find the substring just after current marker
+	// and before next marker
+
+	// Ex: fv = "something/ubuntu:0.1.0", pattern = "something/IMAGE:VERSION", till patternInd reaches 10
+	// just proceed fvInd and patternInd and check if fv[fvInd]==pattern[patternInd] when patternInd is 10,
+	// freeze patternInd and move fvInd till it sees substring ':' which derives IMAGE = ubuntu and so on.
+	for fvInd < len(fv) && patternInd < len(pattern) {
+		// if we hit marker index, extract its corresponding value
+		if marker, ok := indices[patternInd]; ok {
+			// increment the patternInd to end of marker. This helps us to extract the substring before next marker.
+			patternInd += len(marker)
+			var value string
+			if value, fvInd, err = c.extractValueForMarker(fvInd, fv, patternInd, indices); err != nil {
+				return nil, err
+			}
+			// if marker is repeated in the pattern, make sure that the corresponding values
+			// are same and throw error if not.
+			if prevValue, ok := m[marker]; ok && prevValue != value {
+				return nil, errors.Errorf(
+					"marker %s is found to have different values %s and %s", marker, prevValue, value)
+			}
+			m[marker] = value
+		} else {
+			// Ex: fv = "samething/ubuntu:0.1.0" pattern = "something/IMAGE:VERSION". Error out at 'a' in fv.
+			if fv[fvInd] != pattern[patternInd] {
+				return nil, errors.Errorf(
+					"unable to derive values for markers, " +
+						"create setters for all markers and then try again")
+			}
+			fvInd++
+			patternInd++
+		}
+	}
+	// check if both strings are completely visited or throw error
+	if fvInd < len(fv) || patternInd < len(pattern) {
+		return nil, errors.Errorf(
+			"unable to derive values for markers, " +
+				"create setters for all markers and then try again")
+	}
+	return m, nil
+}
+
+// GetStartIndices returns the start indices of all the markers in the pattern
+func (c SubstitutionCreator) GetStartIndices() (map[int]string, error) {
+	indices := make(map[int]string)
+	for _, value := range c.Values {
+		found := false
+		for i := range c.Pattern {
+			if strings.HasPrefix(c.Pattern[i:], value.Marker) {
+				indices[i] = value.Marker
+				found = true
+			}
+		}
+		if !found {
+			return nil, errors.Errorf("unable to find marker " + value.Marker + " in the pattern")
+		}
+	}
+	if err := validateMarkers(indices); err != nil {
+		return nil, err
+	}
+	return indices, nil
+}
+
+// validateMarkers takes the indices map, checks if any of 2 markers not have delimiters,
+// checks if any marker is substring of other and returns error
+func validateMarkers(indices map[int]string) error {
+	for k1, v1 := range indices {
+		for k2, v2 := range indices {
+			if k1 != k2 && k1+len(v1) == k2 {
+				return errors.Errorf(
+					"markers %s and %s are found to have no delimiters between them,"+
+						" pre-create setters and try again", v1, v2)
+			}
+			if v1 != v2 && strings.Contains(v1, v2) {
+				return errors.Errorf(
+					"markers %s is substring of %s,"+
+						" no marker should be substring of other", v2, v1)
+			}
+		}
+	}
+	return nil
+}
+
+// extractValueForMarker returns the value string for a marker and the incremented index
+func (c SubstitutionCreator) extractValueForMarker(fvInd int, fv string, patternInd int, indices map[int]string) (string, int, error) {
+	nonMarkerStr := strTillNextMarker(indices, patternInd, c.Pattern)
+
+	// return the remaining string of fv till end if patternInd is at end of pattern
+	if patternInd == len(c.Pattern) {
+		return fv[fvInd:], len(fv), nil
+	}
+
+	// split remaining fv starting from fvInd with the non marker substring delimiter and get the first value
+	// In example fv = "something/ubuntu::0.1.0", pattern = "something/IMAGE::VERSION",
+	// split with "::" delimiter in fv which gives markerValue = ubuntu for marker IMAGE
+	// increment fvInd by length of extracted marker value and return fvInd
+	if markerValues := strings.Split(fv[fvInd:], nonMarkerStr); len(markerValues) > 0 {
+		return markerValues[0], fvInd + len(markerValues[0]), nil
+	}
+
+	return "", -1, errors.Errorf(
+		"unable to derive values for markers," +
+			" create setters for all markers and then try again")
+}
+
+// substrOfLen takes a string, start index and length and returns substring of given length
+// or till end of string
+func substrOfLen(str string, startInd int, length int) string {
+	return str[startInd:min(len(str), startInd+length)]
+}
+
+// strTillNextMarker takes in the indices map, a start index and returns the substring till
+// start of next marker
+func strTillNextMarker(indices map[int]string, startInd int, pattern string) string {
+	// initialize with max value which is length of pattern
+	nextMarkerStartInd := len(pattern)
+	for ind := range indices {
+		if ind > startInd {
+			nextMarkerStartInd = min(ind-startInd, nextMarkerStartInd)
+		}
+	}
+	return substrOfLen(pattern, startInd, nextMarkerStartInd)
+}
+
+func min(a int, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}

kyaml/setters2/settersutil/substitutioncreator_test.go

@@ -0,0 +1,111 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package settersutil
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"sigs.k8s.io/kustomize/kyaml/errors"
+	"sigs.k8s.io/kustomize/kyaml/setters2"
+)
+
+func TestGetValuesForMarkers(t *testing.T) {
+	var tests = []struct {
+		name           string
+		pattern        string
+		fieldValue     string
+		markers        []string
+		expectedError  error
+		expectedOutput map[string]string
+	}{
+		{
+			name:           "positive example",
+			markers:        []string{"IMAGE", "VERSION"},
+			pattern:        "something/IMAGE::VERSION/otherthing/IMAGE::VERSION/",
+			fieldValue:     "something/nginx::0.1.0/otherthing/nginx::0.1.0/",
+			expectedOutput: map[string]string{"IMAGE": "nginx", "VERSION": "0.1.0"},
+		},
+		{
+			name:          "marker with different values",
+			markers:       []string{"IMAGE", "VERSION"},
+			pattern:       "something/IMAGE:VERSION/IMAGE",
+			fieldValue:    "something/nginx:0.1.0/ubuntu",
+			expectedError: errors.Errorf("marker IMAGE is found to have different values nginx and ubuntu"),
+		},
+		{
+			name:          "unmatched pattern",
+			markers:       []string{"IMAGE", "VERSION"},
+			pattern:       "something/IMAGE:VERSION",
+			fieldValue:    "otherthing/nginx:0.1.0",
+			expectedError: errors.Errorf("unable to derive values for markers"),
+		},
+		{
+			name:          "unmatched pattern at the end",
+			markers:       []string{"IMAGE", "VERSION"},
+			pattern:       "something/IMAGE:VERSION/abc",
+			fieldValue:    "something/nginx:0.1.0/abcd",
+			expectedError: errors.Errorf("unable to derive values for markers"),
+		},
+		{
+			name:          "substring markers",
+			markers:       []string{"IMAGE", "VERSION", "MAGE"},
+			pattern:       "something/IMAGE:VERSION/abc/MAGE",
+			fieldValue:    "something/nginx:0.1.0/abc/ubuntu",
+			expectedError: errors.Errorf("no marker should be substring of other"),
+		},
+		{
+			name:          "markers with no delimiters",
+			markers:       []string{"IMAGE", "VERSION"},
+			pattern:       "something/IMAGEVERSION/",
+			fieldValue:    "something/nginx0.1.0/",
+			expectedError: errors.Errorf("no delimiters between them"),
+		},
+		{
+			name:          "unmatched delimiter",
+			markers:       []string{"IMAGE", "VERSION"},
+			pattern:       "something/IMAGE:^VERSION/otherthing/IMAGE::VERSION/",
+			fieldValue:    "something/nginx::0.1.0/otherthing/nginx::0.1.0/",
+			expectedError: errors.Errorf("unable to derive values for markers"),
+		},
+	}
+	for i := range tests {
+		test := tests[i]
+		t.Run(test.name, func(t *testing.T) {
+			values := []setters2.Value{}
+			for _, marker := range test.markers {
+				value := setters2.Value{
+					Marker: marker,
+				}
+				values = append(values, value)
+			}
+
+			sc := SubstitutionCreator{
+				Pattern:    test.pattern,
+				Values:     values,
+				FieldValue: test.fieldValue,
+			}
+
+			m, err := sc.GetValuesForMarkers()
+
+			if test.expectedError == nil {
+				// fail if expectedError is nil but actual error is not
+				if !assert.NoError(t, err) {
+					t.FailNow()
+				}
+				// check if all the expected markers and values are present in actual map
+				for k, v := range test.expectedOutput {
+					if val, ok := m[k]; ok {
+						assert.Equal(t, v, val)
+					} else {
+						t.FailNow()
+					}
+				}
+			} else {
+				//if expectedError is not nil, check for correctness of error message
+				assert.Contains(t, err.Error(), test.expectedError.Error())
+			}
+		})
+	}
+}

kyaml/setters2/types.go

@@ -8,9 +8,7 @@ import (
 
 	"github.com/go-openapi/spec"
 	"sigs.k8s.io/kustomize/kyaml/errors"
-	"sigs.k8s.io/kustomize/kyaml/fieldmeta"
 	"sigs.k8s.io/kustomize/kyaml/openapi"
-	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 type cliExtension struct {
@@ -19,8 +17,10 @@ type cliExtension struct {
 }
 
 type setter struct {
-	Name  string `yaml:"name,omitempty" json:"name,omitempty"`
-	Value string `yaml:"value,omitempty" json:"value,omitempty"`
+	Name       string            `yaml:"name,omitempty" json:"name,omitempty"`
+	Value      string            `yaml:"value,omitempty" json:"value,omitempty"`
+	ListValues []string          `yaml:"listValues,omitempty" json:"listValues,omitempty"`
+	EnumValues map[string]string `yaml:"enumValues,omitempty" json:"enumValues,omitempty"`
 }
 
 type substitution struct {
@@ -56,30 +56,15 @@ func getExtFromSchema(schema *spec.Schema) (*cliExtension, error) {
 
 // getExtFromComment returns the cliExtension openAPI extension if it is present as
 // a comment on the field.
-func getExtFromComment(object *yaml.RNode) (*cliExtension, error) {
-	// TODO(pwittrock): also use path to the field to get openapi, not just comments
-	// parse comment containing the extended openapi for this field
-	fm := fieldmeta.FieldMeta{}
-	if err := fm.Read(object); err != nil {
-		return nil, errors.Wrap(err)
-	}
-	if fm.Schema.Ref.String() == "" {
-		return nil, nil
-	}
-
-	// resolve the comment reference to the extended openapi definitions
-	r, err := openapi.Resolve(&fm.Schema.Ref)
-	if err != nil {
-		return nil, errors.Wrap(err)
-	}
-	if r == nil {
+func getExtFromComment(schema *openapi.ResourceSchema) (*cliExtension, error) {
+	if schema == nil {
 		// no schema found
 		// TODO(pwittrock): should this be an error if it doesn't resolve?
 		return nil, nil
 	}
 
 	// get the cli extension from the openapi (contains setter information)
-	ext, err := getExtFromSchema(r)
+	ext, err := getExtFromSchema(schema.Schema)
 	if err != nil {
 		return nil, errors.Wrap(err)
 	}

kyaml/setters2/walk.go

@@ -4,6 +4,8 @@
 package setters2
 
 import (
+	"sigs.k8s.io/kustomize/kyaml/fieldmeta"
+	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
@@ -13,33 +15,100 @@ type visitor interface {
 	// visitScalar is called for each scalar field value on a resource
 	// node is the scalar field value
 	// path is the path to the field; path elements are separated by '.'
-	visitScalar(node *yaml.RNode, path string) error
+	// oa is the OpenAPI schema for the field
+	visitScalar(node *yaml.RNode, path string, oa *openapi.ResourceSchema) error
+
+	// visitSequence is called for each sequence field value on a resource
+	// node is the sequence field value
+	// path is the path to the field
+	// oa is the OpenAPI schema for the field
+	visitSequence(node *yaml.RNode, path string, oa *openapi.ResourceSchema) error
 }
 
 // accept invokes the appropriate function on v for each field in object
 func accept(v visitor, object *yaml.RNode) error {
-	return acceptImpl(v, object, "")
+	// get the OpenAPI for the type if it exists
+	oa := getSchema(object, nil, "")
+	return acceptImpl(v, object, "", oa)
 }
 
 // acceptImpl implements accept using recursion
-func acceptImpl(v visitor, object *yaml.RNode, p string) error {
+func acceptImpl(v visitor, object *yaml.RNode, p string, oa *openapi.ResourceSchema) error {
 	switch object.YNode().Kind {
 	case yaml.DocumentNode:
 		// Traverse the child of the document
 		return accept(v, yaml.NewRNode(object.YNode()))
 	case yaml.MappingNode:
 		return object.VisitFields(func(node *yaml.MapNode) error {
+			// get the schema for the field and propagate it
+			oa = getSchema(node.Key, oa, node.Key.YNode().Value)
 			// Traverse each field value
-			return acceptImpl(v, node.Value, p+"."+node.Key.YNode().Value)
+			return acceptImpl(v, node.Value, p+"."+node.Key.YNode().Value, oa)
 		})
 	case yaml.SequenceNode:
+		// get the schema for the sequence node, use the schema provided if not present
+		// on the field
+		if err := v.visitSequence(object, p, oa); err != nil {
+			return err
+		}
+		// get the schema for the elements
+		oa = getSchema(object, oa, "")
 		return object.VisitElements(func(node *yaml.RNode) error {
 			// Traverse each list element
-			return acceptImpl(v, node, p)
+			return acceptImpl(v, node, p, oa)
 		})
 	case yaml.ScalarNode:
 		// Visit the scalar field
-		return v.visitScalar(object, p)
+		oa = getSchema(object, oa, "")
+		return v.visitScalar(object, p, oa)
 	}
 	return nil
 }
+
+// getSchema returns OpenAPI schema for an RNode or field of the
+// RNode.  It will overriding the provide schema with field specific values
+// if they are found
+// r is the Node to get the Schema for
+// s is the provided schema for the field if known
+// field is the name of the field
+func getSchema(r *yaml.RNode, s *openapi.ResourceSchema, field string) *openapi.ResourceSchema {
+	// get the override schema if it exists on the field
+	fm := fieldmeta.FieldMeta{}
+	if err := fm.Read(r); err == nil && !fm.IsEmpty() {
+		// per-field schema, this is fine
+		if fm.Schema.Ref.String() != "" {
+			// resolve the reference
+			s, err := openapi.Resolve(&fm.Schema.Ref)
+			if err == nil && s != nil {
+				fm.Schema = *s
+			}
+		}
+		return &openapi.ResourceSchema{Schema: &fm.Schema}
+	}
+
+	// get the schema for a field of the node if the field is provided
+	if s != nil && field != "" {
+		return s.Field(field)
+	}
+
+	// get the schema for the elements if this is a list
+	if s != nil && r.YNode().Kind == yaml.SequenceNode {
+		return s.Elements()
+	}
+
+	// use the provided schema if present
+	if s != nil {
+		return s
+	}
+
+	if yaml.IsEmpty(r) {
+		return nil
+	}
+
+	// lookup the schema for the type
+	m, _ := r.GetMeta()
+	if m.Kind == "" || m.APIVersion == "" {
+		return nil
+	}
+	return openapi.SchemaForResourceType(yaml.TypeMeta{Kind: m.Kind, APIVersion: m.APIVersion})
+}

kyaml/starlark/doc.go

@@ -0,0 +1,36 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package starlark contains a kio.Filter which can be applied to resources to transform
+// them through starlark program.
+//
+// Starlark has become a popular runtime embedding in go programs, especially for Kubernetes
+// and data processing.
+// Examples: https://github.com/cruise-automation/isopod, https://qri.io/docs/starlark/starlib,
+// https://github.com/stripe/skycfg, https://github.com/k14s/ytt
+//
+// The resources are provided to the starlark program through the global variable "resourceList".
+// "resourceList" is a dictionary containing an "items" field with a list of resources.
+// The starlark modified "resourceList" is the Filter output.
+//
+// After being run through the starlark program, the filter will copy the comments from the input
+// resources to restore them -- due to them being dropped as a result of serializing the resources
+// as starlark values.
+//
+// "resourceList" may also contain a "functionConfig" entry to configure the starlark script itself.
+// Changes made by the starlark program to the "functionConfig" will be reflected in the
+// Filter.FunctionConfig value.
+//
+// The Filter will also format the output so that output has the preferred field ordering
+// rather than an alphabetical field ordering.
+//
+// The resourceList variable adheres to the kustomize function spec as specified by:
+// https://github.com/kubernetes-sigs/kustomize/blob/master/cmd/config/docs/api-conventions/functions-spec.md
+//
+// All items in the resourceList are resources represented as starlark dictionaries/
+// The items in the resourceList respect the io spec specified by:
+// https://github.com/kubernetes-sigs/kustomize/blob/master/cmd/config/docs/api-conventions/config-io.md
+//
+// The starlark language spec can be found here:
+// https://github.com/google/starlark-go/blob/master/doc/spec.md
+package starlark

kyaml/starlark/example_test.go

@@ -0,0 +1,290 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package starlark_test
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	"sigs.k8s.io/kustomize/kyaml/starlark"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+func ExampleFilter_Filter() {
+	// input contains the items that will provided to the starlark program
+	input := bytes.NewBufferString(`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deployment-1
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-1"}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deployment-2
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.7.9 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-2"}
+`)
+
+	// fltr transforms the input using a starlark program
+	fltr := &starlark.Filter{
+		Name: "annotate",
+		Program: `
+def run(items):
+  for item in items:
+    item["metadata"]["annotations"]["foo"] = "bar"
+
+run(resourceList["items"])
+`,
+	}
+
+	// output contains the transformed resources
+	output := &bytes.Buffer{}
+
+	// run the fltr against the inputs using a kio.Pipeline
+	err := kio.Pipeline{
+		Inputs:  []kio.Reader{&kio.ByteReader{Reader: input}},
+		Filters: []kio.Filter{fltr},
+		Outputs: []kio.Writer{&kio.ByteWriter{Writer: output}}}.Execute()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println(output.String())
+
+	// Output:
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: deployment-1
+	//   annotations:
+	//     foo: bar
+	// spec:
+	//   template:
+	//     spec:
+	//       containers:
+	//       - name: nginx
+	//         image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-1"}
+	//---
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: deployment-2
+	//   annotations:
+	//     foo: bar
+	// spec:
+	//   template:
+	//     spec:
+	//       containers:
+	//       - name: nginx
+	//         image: nginx:1.7.9 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-2"}
+}
+
+func ExampleFilter_Filter_functionConfig() {
+	// input contains the items that will provided to the starlark program
+	input := bytes.NewBufferString(`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deployment-1
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-1"}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deployment-2
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.7.9 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-2"}
+`)
+
+	fc, err := yaml.Parse(`
+kind: AnnotationSetter
+spec:
+  value: "hello world"
+`)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// fltr transforms the input using a starlark program
+	fltr := &starlark.Filter{
+		Name: "annotate",
+		Program: `
+def run(items, value):
+  for item in items:
+    item["metadata"]["annotations"]["foo"] = value
+
+run(resourceList["items"], resourceList["functionConfig"]["spec"]["value"])
+`,
+		FunctionConfig: fc,
+	}
+
+	// output contains the transformed resources
+	output := &bytes.Buffer{}
+
+	// run the fltr against the inputs using a kio.Pipeline
+	err = kio.Pipeline{
+		Inputs:  []kio.Reader{&kio.ByteReader{Reader: input}},
+		Filters: []kio.Filter{fltr},
+		Outputs: []kio.Writer{&kio.ByteWriter{Writer: output}}}.Execute()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println(output.String())
+
+	// Output:
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: deployment-1
+	//   annotations:
+	//     foo: hello world
+	// spec:
+	//   template:
+	//     spec:
+	//       containers:
+	//       - name: nginx
+	//         image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-1"}
+	//---
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: deployment-2
+	//   annotations:
+	//     foo: hello world
+	// spec:
+	//   template:
+	//     spec:
+	//       containers:
+	//       - name: nginx
+	//         image: nginx:1.7.9 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-2"}
+}
+
+// ExampleFilter_Filter_file applies a starlark program in a local file to a collection of
+// resource configuration read from a directory.
+func ExampleFilter_Filter_file() {
+	// setup the configuration
+	d, err := ioutil.TempDir("", "")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer os.RemoveAll(d)
+
+	err = ioutil.WriteFile(filepath.Join(d, "deploy1.yaml"), []byte(`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deployment-1
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-1"}
+`), 0600)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = ioutil.WriteFile(filepath.Join(d, "deploy2.yaml"), []byte(`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deployment-2
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.7.9 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-2"}
+`), 0600)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = ioutil.WriteFile(filepath.Join(d, "annotate.star"), []byte(`
+def run(items):
+  for item in items:
+    item["metadata"]["annotations"]["foo"] = "bar"
+
+run(resourceList["items"])
+`), 0600)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fltr := &starlark.Filter{
+		Name: "annotate",
+		Path: filepath.Join(d, "annotate.star"),
+	}
+
+	// output contains the transformed resources
+	output := &bytes.Buffer{}
+
+	// run the fltr against the inputs using a kio.Pipeline
+	err = kio.Pipeline{
+		Inputs:  []kio.Reader{&kio.LocalPackageReader{PackagePath: d}},
+		Filters: []kio.Filter{fltr},
+		Outputs: []kio.Writer{&kio.ByteWriter{
+			Writer:           output,
+			ClearAnnotations: []string{"config.kubernetes.io/path"},
+		}}}.Execute()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println(output.String())
+
+	// Output:
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: deployment-1
+	//   annotations:
+	//     foo: bar
+	// spec:
+	//   template:
+	//     spec:
+	//       containers:
+	//       - name: nginx
+	//         image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-1"}
+	//---
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: deployment-2
+	//   annotations:
+	//     foo: bar
+	// spec:
+	//   template:
+	//     spec:
+	//       containers:
+	//       - name: nginx
+	//         image: nginx:1.7.9 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image-2"}
+}

kyaml/starlark/starlark.go

@@ -0,0 +1,251 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package starlark
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strconv"
+
+	"github.com/qri-io/starlib/util"
+	"go.starlark.net/starlark"
+	"sigs.k8s.io/kustomize/kyaml/comments"
+	"sigs.k8s.io/kustomize/kyaml/errors"
+	"sigs.k8s.io/kustomize/kyaml/kio/filters"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// Filter transforms a set of resources through the provided program
+type Filter struct {
+	Name string
+
+	// Program is a starlark script which will be run against the resources
+	Program string
+
+	// URL is the url of a starlark program to fetch and run
+	URL string
+
+	// Path is the path to a starlark program to read and run
+	Path string
+
+	// FunctionConfig is the value to be provided for resourceList.functionConfig as specified by
+	// https://github.com/kubernetes-sigs/kustomize/blob/master/cmd/config/docs/api-conventions/functions-spec.md.
+	FunctionConfig *yaml.RNode
+}
+
+func (sf *Filter) Filter(input []*yaml.RNode) ([]*yaml.RNode, error) {
+	if sf.URL != "" && sf.Path != "" ||
+		sf.URL != "" && sf.Program != "" ||
+		sf.Path != "" && sf.Program != "" {
+		return nil, errors.Errorf("Filter Path, Program and URL are mutually exclusive")
+	}
+
+	// read the program from a file
+	if sf.Path != "" {
+		b, err := ioutil.ReadFile(sf.Path)
+		if err != nil {
+			return nil, err
+		}
+		sf.Program = string(b)
+	}
+
+	// read the program from a URL
+	if sf.URL != "" {
+		err := func() error {
+			resp, err := http.Get(sf.URL)
+			if err != nil {
+				return err
+			}
+			defer resp.Body.Close()
+			b, err := ioutil.ReadAll(resp.Body)
+			if err != nil {
+				return err
+			}
+			sf.Program = string(b)
+			return nil
+		}()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// retain map of inputs to outputs by id so if the name is changed by the
+	// starlark program, we are able to match the same resources
+	value, ids, err := sf.inputToResourceList(input)
+	if err != nil {
+		return nil, errors.Wrap(err)
+	}
+
+	// run the starlark as program as transformation function
+	thread := &starlark.Thread{Name: sf.Name}
+	predeclared := starlark.StringDict{"resourceList": value}
+	_, err = starlark.ExecFile(thread, sf.Name, sf.Program, predeclared)
+	if err != nil {
+		return nil, errors.Wrap(err)
+	}
+
+	results, err := sf.resourceListToOutput(value, ids)
+	if err != nil {
+		return nil, errors.Wrap(err)
+	}
+
+	// starlark will serialize the resources sorting the fields alphabetically,
+	// format them to have a better ordering
+	return filters.FormatFilter{}.Filter(results)
+}
+
+// tuple maps an input resource to the output resource
+type tuple struct {
+	// in is the RNode provided to the starlark program
+	in *yaml.RNode
+	// out is the RNode emitted by the starlark program with the id matching in
+	out *yaml.RNode
+}
+
+// inputToResourceList transforms input into a starlark.Value
+func (sf *Filter) inputToResourceList(
+	input []*yaml.RNode) (starlark.Value, map[int]*tuple, error) {
+	var id int
+	ids := map[int]*tuple{}
+
+	// convert into a ResourceList which will be converted to a starlark dictionary
+	// create the ResourceList
+	resourceList, err := yaml.Parse(`kind: ResourceList`)
+	if err != nil {
+		return nil, nil, errors.Wrap(err)
+	}
+
+	// set the functionConfig
+	if sf.FunctionConfig != nil {
+		if err := resourceList.PipeE(
+			yaml.FieldSetter{Name: "functionConfig", Value: sf.FunctionConfig}); err != nil {
+			return nil, nil, err
+		}
+	}
+
+	// the inputs should be provided as the list "items"
+	items, err := resourceList.Pipe(yaml.LookupCreate(yaml.SequenceNode, "items"))
+	if err != nil {
+		return nil, nil, errors.Wrap(err)
+	}
+	// add the input as items, give each resource an id
+	for i := range input {
+		item := input[i]
+
+		// create an id for tracking the resource through the program
+		err := item.PipeE(yaml.SetAnnotation("config.k8s.io/id", fmt.Sprintf("%d", id)))
+		if err != nil {
+			return nil, nil, errors.Wrap(err)
+		}
+		ids[id] = &tuple{in: item}
+		id++
+
+		items.YNode().Content = append(items.YNode().Content, item.YNode())
+	}
+
+	// convert the ResourceList into a starlark dictionary by
+	// first converting it into a map[string]interface{}
+	s, err := resourceList.String()
+	if err != nil {
+		return nil, nil, errors.Wrap(err)
+	}
+	var in map[string]interface{}
+	if err := yaml.Unmarshal([]byte(s), &in); err != nil {
+		return nil, nil, errors.Wrap(err)
+	}
+	value, err := util.Marshal(in)
+	if err != nil {
+		return nil, nil, errors.Wrap(err)
+	}
+	return value, ids, err
+}
+
+// resourceListToOutput converts the output of the starlark program to the filter output
+func (sf *Filter) resourceListToOutput(
+	value starlark.Value, ids map[int]*tuple) ([]*yaml.RNode, error) {
+	// convert the modified resourceList back into a slice of RNodes
+	// by first converting to a map[string]interface{}
+	out, err := util.Unmarshal(value)
+	if err != nil {
+		return nil, errors.Wrap(err)
+	}
+	o := out.(map[string]interface{})
+
+	// parse the function config
+	if _, found := o["functionConfig"]; found {
+		fc := (o["functionConfig"].(map[string]interface{}))
+		b, err := yaml.Marshal(fc)
+		if err != nil {
+			return nil, errors.Wrap(err)
+		}
+		sf.FunctionConfig, err = yaml.Parse(string(b))
+		if err != nil {
+			return nil, errors.Wrap(err)
+		}
+	}
+
+	// parse the items
+	// copy the items out of the ResourceList, and into the Filter output
+	var results []*yaml.RNode
+	it := (o["items"].([]interface{}))
+	for i := range it {
+		// convert the resource back to the native yaml form
+		b, err := yaml.Marshal(it[i])
+		if err != nil {
+			return nil, errors.Wrap(err)
+		}
+		node, err := yaml.Parse(string(b))
+		if err != nil {
+			return nil, errors.Wrap(err)
+		}
+
+		// match it to an input
+		idS, err := node.Pipe(yaml.GetAnnotation("config.k8s.io/id"))
+		if err != nil {
+			return nil, errors.Wrap(err)
+		}
+		if idS == nil {
+			// no matching input -- new resource
+			results = append(results, node)
+			continue
+		}
+
+		id, err := strconv.Atoi(idS.YNode().Value)
+		if err != nil {
+			return nil, errors.Wrap(err)
+		}
+		if match, found := ids[id]; found {
+			// matching resources
+			match.out = node
+		} else {
+			// no matching input with the same id -- new resource
+			// this may be an error case, the outputs probably shouldn't have ids
+			// assigned by the starlark program
+			results = append(results, node)
+		}
+	}
+
+	// retain the comments instead of dropping them by copying them from the original inputs
+	for i := 0; i < len(ids); i++ {
+		v := ids[i]
+		if v.out == nil {
+			continue
+		}
+		if err := comments.CopyComments(v.in, v.out); err != nil {
+			return nil, errors.Wrap(err)
+		}
+		results = append(results, v.out)
+	}
+
+	// delete the ids from resources, these were only to track through the starlark program
+	// and that is finished.
+	for i := range results {
+		err := results[i].PipeE(yaml.ClearAnnotation("config.k8s.io/id"))
+		if err != nil {
+			return nil, err
+		}
+	}
+	return results, nil
+}

kyaml/starlark/starlark_test.go

@@ -0,0 +1,389 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package starlark
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/go-errors/errors"
+	"github.com/stretchr/testify/assert"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+func TestFilter_Filter(t *testing.T) {
+	var tests = []struct {
+		name                   string
+		input                  string
+		functionConfig         string
+		script                 string
+		expected               string
+		expectedFunctionConfig string
+	}{
+		{
+			name: "add_annotation",
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+			script: `
+# set the foo annotation on each resource
+def run(r):
+  for resource in r:
+    resource["metadata"]["annotations"]["foo"] = "bar"
+
+run(resourceList["items"])
+`,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: bar
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+		},
+		{
+			name: "update_annotation",
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: baz
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+			script: `
+# set the foo annotation on each resource
+def run(r):
+  for resource in r:
+    resource["metadata"]["annotations"]["foo"] = "bar"
+
+run(resourceList["items"])
+`,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: bar
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+		},
+		{
+			name: "update_annotation_multiple",
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-1
+  annotations:
+    foo: baz
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-2
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+			script: `
+# set the foo annotation on each resource
+def run(r):
+  for resource in r:
+    resource["metadata"]["annotations"]["foo"] = "bar"
+
+run(resourceList["items"])
+`,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-1
+  annotations:
+    foo: bar
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-2
+  annotations:
+    foo: bar
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}`,
+		},
+		{
+			name: "add_resource",
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-1
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+			script: `
+def run(r):
+  d = {
+  "apiVersion": "apps/v1",
+  "kind": "Deployment",
+  "metadata": {
+    "name": "nginx-deployment-2",
+  },
+}
+  r.append(d)
+run(resourceList["items"])
+`,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-2
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-1
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+		},
+		{
+			name: "remove_resource",
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-1
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-2
+`,
+			script: `
+def run(r):
+  r.pop()
+run(resourceList["items"])
+`,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment-1
+`,
+		},
+		{
+			name: "functionConfig",
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+			functionConfig: `
+kind: Script
+spec:
+  value: "hello world"
+`,
+			script: `
+# set the foo annotation on each resource
+def run(r, an):
+  for resource in r:
+    resource["metadata"]["annotations"]["foo"] = an
+
+an = resourceList["functionConfig"]["spec"]["value"]
+run(resourceList["items"], an)
+`,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: hello world
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+			expectedFunctionConfig: `
+kind: Script
+spec:
+  value: hello world
+`,
+		},
+
+		{
+			name: "functionConfig_update_functionConfig",
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+			functionConfig: `
+kind: Script
+spec:
+  value: "hello world"
+`,
+			script: `
+# set the foo annotation on each resource
+def run(r, an):
+  for resource in r:
+    resource["metadata"]["annotations"]["foo"] = an
+
+an = resourceList["functionConfig"]["spec"]["value"]
+run(resourceList["items"], an)
+resourceList["functionConfig"]["spec"]["value"] = "updated"
+`,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  annotations:
+    foo: hello world
+spec:
+  template:
+    spec:
+      containers:
+      - name: nginx
+        # head comment
+        image: nginx:1.8.1 # {"$ref": "#/definitions/io.k8s.cli.substitutions.image"}
+`,
+			expectedFunctionConfig: `
+kind: Script
+spec:
+  value: updated
+`,
+		},
+	}
+	for i := range tests {
+		test := tests[i]
+		t.Run(test.name, func(t *testing.T) {
+			f := &Filter{Name: test.name, Program: test.script}
+
+			if test.functionConfig != "" {
+				fc, err := yaml.Parse(test.functionConfig)
+				if !assert.NoError(t, err) {
+					t.FailNow()
+				}
+				f.FunctionConfig = fc
+			}
+
+			r := &kio.ByteReader{Reader: bytes.NewBufferString(test.input)}
+			o := &bytes.Buffer{}
+			w := &kio.ByteWriter{Writer: o}
+			p := kio.Pipeline{
+				Inputs:  []kio.Reader{r},
+				Filters: []kio.Filter{f},
+				Outputs: []kio.Writer{w},
+			}
+			err := p.Execute()
+			if !assert.NoError(t, err) {
+				if e, ok := err.(*errors.Error); ok {
+					fmt.Fprintf(os.Stderr, "%s\n", e.Stack())
+				}
+				t.FailNow()
+			}
+			if !assert.Equal(t, strings.TrimSpace(test.expected), strings.TrimSpace(o.String())) {
+				t.FailNow()
+			}
+
+			if test.expectedFunctionConfig != "" {
+				if !assert.Equal(t,
+					strings.TrimSpace(test.expectedFunctionConfig),
+					strings.TrimSpace(f.FunctionConfig.MustString())) {
+					t.FailNow()
+				}
+			}
+		})
+	}
+}

kyaml/yaml/compatibility.go

@@ -14,9 +14,9 @@ import (
 
 // typeToTag maps OpenAPI schema types to yaml 1.2 tags
 var typeToTag = map[string]string{
-	"string":  "!!str",
-	"integer": "!!int",
-	"boolean": "!!bool",
+	"string":  StringTag,
+	"integer": IntTag,
+	"boolean": BoolTag,
 	"number":  "!!float",
 }
 

kyaml/yaml/filters.go

@@ -15,6 +15,7 @@ var Filters = map[string]func() Filter{
 	"AnnotationClearer": func() Filter { return &AnnotationClearer{} },
 	"AnnotationGetter":  func() Filter { return &AnnotationGetter{} },
 	"AnnotationSetter":  func() Filter { return &AnnotationSetter{} },
+	"LabelSetter":       func() Filter { return &LabelSetter{} },
 	"ElementAppender":   func() Filter { return &ElementAppender{} },
 	"ElementMatcher":    func() Filter { return &ElementMatcher{} },
 	"FieldClearer":      func() Filter { return &FieldClearer{} },

kyaml/yaml/kfns.go

@@ -3,7 +3,9 @@
 
 package yaml
 
-import "gopkg.in/yaml.v3"
+import (
+	"gopkg.in/yaml.v3"
+)
 
 // AnnotationClearer removes an annotation at metadata.annotations.
 // Returns nil if the annotation or field does not exist.
@@ -33,7 +35,7 @@ type AnnotationSetter struct {
 func (s AnnotationSetter) Filter(rn *RNode) (*RNode, error) {
 	// some tools get confused about the type if annotations are not quoted
 	v := NewScalarRNode(s.Value)
-	v.YNode().Tag = "!!str"
+	v.YNode().Tag = StringTag
 	v.YNode().Style = yaml.SingleQuotedStyle
 	return rn.Pipe(
 		PathGetter{Path: []string{"metadata", "annotations"}, Create: yaml.MappingNode},
@@ -68,3 +70,25 @@ func (g AnnotationGetter) Filter(rn *RNode) (*RNode, error) {
 func GetAnnotation(key string) AnnotationGetter {
 	return AnnotationGetter{Key: key}
 }
+
+// LabelSetter sets a label at metadata.labels.
+// Creates metadata.labels if does not exist.
+type LabelSetter struct {
+	Kind  string `yaml:"kind,omitempty"`
+	Key   string `yaml:"key,omitempty"`
+	Value string `yaml:"value,omitempty"`
+}
+
+func (s LabelSetter) Filter(rn *RNode) (*RNode, error) {
+	// some tools get confused about the type if labels are not quoted
+	v := NewScalarRNode(s.Value)
+	v.YNode().Tag = StringTag
+	v.YNode().Style = yaml.SingleQuotedStyle
+	return rn.Pipe(
+		PathGetter{Path: []string{"metadata", "labels"}, Create: yaml.MappingNode},
+		FieldSetter{Name: s.Key, Value: v})
+}
+
+func SetLabel(key, value string) LabelSetter {
+	return LabelSetter{Key: key, Value: value}
+}

kyaml/yaml/kfns_test.go

@@ -0,0 +1,63 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package yaml
+
+import (
+	"testing"
+)
+
+var input = `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: the-map
+data:
+  altGreeting: "Good Morning!"
+  enableRisky: "false"
+`
+
+func TestSetLabel(t *testing.T) {
+	rn := MustParse(input)
+	_, err := rn.Pipe(SetLabel("foo", "bar"))
+	if err != nil {
+		t.Fatalf("unexpected error %v", err)
+	}
+	output := rn.MustString()
+
+	expected := `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: the-map
+  labels:
+    foo: 'bar'
+data:
+  altGreeting: "Good Morning!"
+  enableRisky: "false"
+`
+	if output != expected {
+		t.Fatalf("expected \n%s\nbut got \n%s\n", expected, output)
+	}
+}
+
+func TestAnnotation(t *testing.T) {
+	rn := MustParse(input)
+	_, err := rn.Pipe(SetAnnotation("foo", "bar"))
+	if err != nil {
+		t.Fatalf("unexpected error %v", err)
+	}
+	output := rn.MustString()
+
+	expected := `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: the-map
+  annotations:
+    foo: 'bar'
+data:
+  altGreeting: "Good Morning!"
+  enableRisky: "false"
+`
+	if output != expected {
+		t.Fatalf("expected \n%s\nbut got \n%s\n", expected, output)
+	}
+}

kyaml/yaml/merge2/element_test.go

@@ -4,251 +4,461 @@
 package merge2_test
 
 var elementTestCases = []testCase{
-	{`merge Element -- keep field in dest`,
-		`
+	{description: `merge Element -- keep field in dest`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v0
-  command: ['run.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v0
+        command: ['run.sh']
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-  command: ['run.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+        command: ['run.sh']
 `,
 	},
 
-	{`merge Element -- add field to dest`,
-		`
+	{description: `merge Element -- add field to dest`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-  command: ['run.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+        command: ['run.sh']
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v0
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v0
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-  command: ['run.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+        command: ['run.sh']
 `,
 	},
 
-	{`merge Element -- add list, empty in dest`,
-		`
+	{description: `merge Element -- add list, empty in dest`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-  command: ['run.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+        command: ['run.sh']
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items: []
+spec:
+  template:
+    spec:
+      containers: []
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-  command: ['run.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+        command: ['run.sh']
 `,
 	},
 
-	{`merge Element -- add list, missing from dest`,
-		`
+	{description: `merge Element -- add list, missing from dest`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-  command: ['run.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+        command: ['run.sh']
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-  command: ['run.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+        command: ['run.sh']
 `,
 	},
 
-	{`merge Element -- add Element first`,
-		`
+	{description: `merge Element -- add Element first`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
-- name: foo
-  image: foo:v1
+spec:
+  template:
+    spec:
+      containers:
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
+      - name: foo
+        image: foo:v1
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v0
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v0
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
 	},
 
-	{`merge Element -- add Element second`,
-		`
+	{description: `merge Element -- add Element second`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v0
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v0
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
 	},
 
 	//
 	// Test Case
 	//
-	{`keep list -- list missing from src`,
-		`
+	{description: `keep list -- list missing from src`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
 	},
 
 	//
 	// Test Case
 	//
-	{`keep Element -- element missing in src`,
-		`
+	{description: `keep Element -- element missing in src`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v0
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v0
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
 	},
 
 	//
 	// Test Case
 	//
-	{`keep element -- empty list in src`,
-		`
+	{description: `keep element -- empty list in src`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items: {}
+spec:
+  template:
+    spec:
+      containers: {}
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
-		`
+		expected: `
+apiVersion: apps/v1
 kind: Deployment
-items:
-- name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
-  command: ['run2.sh']
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
 `,
 	},
 
 	//
 	// Test Case
 	//
-	{`remove Element -- null in src`,
-		`
+	{description: `remove Element -- null in src`,
+		source: `
+apiVersion: apps/v1
 kind: Deployment
-items: null
+spec:
+  template:
+    spec:
+      containers: null
 `,
-		`
+		dest: `
+apiVersion: apps/v1
 kind: Deployment
-items:
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:v1
+      - name: bar
+        image: bar:v1
+        command: ['run2.sh']
+`,
+		expected: `
+apiVersion: apps/v1
+kind: Deployment
+spec:
+  template:
+    spec: {}
+`,
+	},
+
+	//
+	// Test Case
+	//
+	{description: `infer merge keys merge'`,
+		source: `
+apiVersion: custom
+kind: Deployment
+containers:
 - name: foo
-  image: foo:v1
-- name: bar
-  image: bar:v1
   command: ['run2.sh']
 `,
-		`
+		dest: `
+apiVersion: custom
 kind: Deployment
+containers:
+- name: foo
+  image: foo:bar
 `,
+		expected: `
+apiVersion: custom
+kind: Deployment
+containers:
+- name: foo
+  image: foo:bar
+  command: ['run2.sh']
+`,
+		infer: true,
+	},
+
+	//
+	// Test Case
+	//
+	{description: `no infer merge keys merge using schema`,
+		source: `
+apiVersion: apps/v1
+kind: Deployment
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        command: ['run2.sh']
+`,
+		dest: `
+apiVersion: apps/v1
+kind: Deployment
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:bar
+`,
+		expected: `
+apiVersion: apps/v1
+kind: Deployment
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: foo:bar
+        command: ['run2.sh']
+`,
+		infer: false,
+	},
+
+	//
+	// Test Case
+	//
+	{description: `no infer merge keys merge using explicit schema as line comment'`,
+		source: `
+apiVersion: custom
+kind: Deployment
+containers:
+- name: foo
+  command: ['run2.sh']
+`,
+		dest: `
+apiVersion: custom
+kind: Deployment
+containers: # {"items":{"$ref": "#/definitions/io.k8s.api.core.v1.Container"},"type":"array","x-kubernetes-patch-merge-key":"name","x-kubernetes-patch-strategy": "merge"}
+- name: foo # hell ow
+  image: foo:bar
+`,
+		expected: `
+apiVersion: custom
+kind: Deployment
+containers: # {"items":{"$ref": "#/definitions/io.k8s.api.core.v1.Container"},"type":"array","x-kubernetes-patch-merge-key":"name","x-kubernetes-patch-strategy": "merge"}
+- name: foo
+  image: foo:bar
+  command: ['run2.sh']
+`,
+		infer: false,
 	},
 }

kyaml/yaml/merge2/list_test.go

@@ -4,21 +4,21 @@
 package merge2_test
 
 var listTestCases = []testCase{
-	{`replace List -- different value in dest`,
-		`
+	{description: `replace List -- different value in dest`,
+		source: `
 kind: Deployment
 items:
 - 1
 - 2
 - 3
 `,
-		`
+		dest: `
 kind: Deployment
 items:
 - 0
 - 1
 `,
-		`
+		expected: `
 kind: Deployment
 items:
 - 1
@@ -27,18 +27,18 @@ items:
 `,
 	},
 
-	{`replace List -- missing from dest`,
-		`
+	{description: `replace List -- missing from dest`,
+		source: `
 kind: Deployment
 items:
 - 1
 - 2
 - 3
 `,
-		`
+		dest: `
 kind: Deployment
 `,
-		`
+		expected: `
 kind: Deployment
 items:
 - 1
@@ -50,22 +50,22 @@ items:
 	//
 	// Test Case
 	//
-	{`keep List -- same value in src and dest`,
-		`
+	{description: `keep List -- same value in src and dest`,
+		source: `
 kind: Deployment
 items:
 - 1
 - 2
 - 3
 `,
-		`
+		dest: `
 kind: Deployment
 items:
 - 1
 - 2
 - 3
 `,
-		`
+		expected: `
 kind: Deployment
 items:
 - 1
@@ -77,18 +77,18 @@ items:
 	//
 	// Test Case
 	//
-	{`keep List -- unspecified in src`,
-		`
+	{description: `keep List -- unspecified in src`,
+		source: `
 kind: Deployment
 `,
-		`
+		dest: `
 kind: Deployment
 items:
 - 1
 - 2
 - 3
 `,
-		`
+		expected: `
 kind: Deployment
 items:
 - 1
@@ -100,19 +100,19 @@ items:
 	//
 	// Test Case
 	//
-	{`remove List -- null in src`,
-		`
+	{description: `remove List -- null in src`,
+		source: `
 kind: Deployment
 items: null
 `,
-		`
+		dest: `
 kind: Deployment
 items:
 - 1
 - 2
 - 3
 `,
-		`
+		expected: `
 kind: Deployment
 `,
 	},
@@ -120,19 +120,19 @@ kind: Deployment
 	//
 	// Test Case
 	//
-	{`remove list -- empty in src`,
-		`
+	{description: `remove list -- empty in src`,
+		source: `
 kind: Deployment
 items: {}
 `,
-		`
+		dest: `
 kind: Deployment
 items:
 - 1
 - 2
 - 3
 `,
-		`
+		expected: `
 kind: Deployment
 items: {}
 `,

kyaml/yaml/merge2/map_test.go

@@ -4,19 +4,19 @@
 package merge2_test
 
 var mapTestCases = []testCase{
-	{`merge Map -- update field in dest`,
-		`
+	{description: `merge Map -- update field in dest`,
+		source: `
 kind: Deployment
 spec:
   foo: bar1
 `,
-		`
+		dest: `
 kind: Deployment
 spec:
   foo: bar0
   baz: buz
 `,
-		`
+		expected: `
 kind: Deployment
 spec:
   foo: bar1
@@ -24,19 +24,19 @@ spec:
 `,
 	},
 
-	{`merge Map -- add field to dest`,
-		`
+	{description: `merge Map -- add field to dest`,
+		source: `
 kind: Deployment
 spec:
   foo: bar1
   baz: buz
 `,
-		`
+		dest: `
 kind: Deployment
 spec:
   foo: bar0
 `,
-		`
+		expected: `
 kind: Deployment
 spec:
   foo: bar1
@@ -44,18 +44,18 @@ spec:
 `,
 	},
 
-	{`merge Map -- add list, empty in dest`,
-		`
+	{description: `merge Map -- add list, empty in dest`,
+		source: `
 kind: Deployment
 spec:
   foo: bar1
   baz: buz
 `,
-		`
+		dest: `
 kind: Deployment
 spec: {}
 `,
-		`
+		expected: `
 kind: Deployment
 spec:
   foo: bar1
@@ -63,17 +63,17 @@ spec:
 `,
 	},
 
-	{`merge Map -- add list, missing from dest`,
-		`
+	{description: `merge Map -- add list, missing from dest`,
+		source: `
 kind: Deployment
 spec:
   foo: bar1
   baz: buz
 `,
-		`
+		dest: `
 kind: Deployment
 `,
-		`
+		expected: `
 kind: Deployment
 spec:
   foo: bar1
@@ -81,19 +81,19 @@ spec:
 `,
 	},
 
-	{`merge Map -- add Map first`,
-		`
+	{description: `merge Map -- add Map first`,
+		source: `
 kind: Deployment
 spec:
   foo: bar1
   baz: buz
 `,
-		`
+		dest: `
 kind: Deployment
 spec:
   foo: bar1
 `,
-		`
+		expected: `
 kind: Deployment
 spec:
   foo: bar1
@@ -101,19 +101,19 @@ spec:
 `,
 	},
 
-	{`merge Map -- add Map second`,
-		`
+	{description: `merge Map -- add Map second`,
+		source: `
 kind: Deployment
 spec:
   baz: buz
   foo: bar1
 `,
-		`
+		dest: `
 kind: Deployment
 spec:
   foo: bar1
 `,
-		`
+		expected: `
 kind: Deployment
 spec:
   foo: bar1
@@ -124,17 +124,17 @@ spec:
 	//
 	// Test Case
 	//
-	{`keep map -- map missing from src`,
-		`
+	{description: `keep map -- map missing from src`,
+		source: `
 kind: Deployment
 `,
-		`
+		dest: `
 kind: Deployment
 spec:
   foo: bar1
   baz: buz
 `,
-		`
+		expected: `
 kind: Deployment
 spec:
   foo: bar1
@@ -145,18 +145,18 @@ spec:
 	//
 	// Test Case
 	//
-	{`keep map -- empty list in src`,
-		`
+	{description: `keep map -- empty list in src`,
+		source: `
 kind: Deployment
 items: {}
 `,
-		`
+		dest: `
 kind: Deployment
 spec:
   foo: bar1
   baz: buz
 `,
-		`
+		expected: `
 kind: Deployment
 spec:
   foo: bar1
@@ -168,18 +168,18 @@ items: {}
 	//
 	// Test Case
 	//
-	{`remove Map -- null in src`,
-		`
+	{description: `remove Map -- null in src`,
+		source: `
 kind: Deployment
 spec: null
 `,
-		`
+		dest: `
 kind: Deployment
 spec:
   foo: bar1
   baz: buz
 `,
-		`
+		expected: `
 kind: Deployment
 `,
 	},

kyaml/yaml/merge2/merge2.go

@@ -6,6 +6,7 @@
 package merge2
 
 import (
+	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 	"sigs.k8s.io/kustomize/kyaml/yaml/walk"
 )
@@ -16,7 +17,7 @@ func Merge(src, dest *yaml.RNode) (*yaml.RNode, error) {
 }
 
 // Merge parses the arguments, and merges fields from srcStr into destStr.
-func MergeStrings(srcStr, destStr string) (string, error) {
+func MergeStrings(srcStr, destStr string, infer bool) (string, error) {
 	src, err := yaml.Parse(srcStr)
 	if err != nil {
 		return "", err
@@ -26,10 +27,15 @@ func MergeStrings(srcStr, destStr string) (string, error) {
 		return "", err
 	}
 
-	result, err := Merge(src, dest)
+	result, err := walk.Walker{
+		Sources:               []*yaml.RNode{dest, src},
+		Visitor:               Merger{},
+		InferAssociativeLists: infer,
+	}.Walk()
 	if err != nil {
 		return "", err
 	}
+
 	return result.String()
 }
 
@@ -39,7 +45,7 @@ type Merger struct {
 
 var _ walk.Visitor = Merger{}
 
-func (m Merger) VisitMap(nodes walk.Sources) (*yaml.RNode, error) {
+func (m Merger) VisitMap(nodes walk.Sources, s *openapi.ResourceSchema) (*yaml.RNode, error) {
 	if err := m.SetComments(nodes); err != nil {
 		return nil, err
 	}
@@ -58,7 +64,7 @@ func (m Merger) VisitMap(nodes walk.Sources) (*yaml.RNode, error) {
 	return nodes.Dest(), nil
 }
 
-func (m Merger) VisitScalar(nodes walk.Sources) (*yaml.RNode, error) {
+func (m Merger) VisitScalar(nodes walk.Sources, s *openapi.ResourceSchema) (*yaml.RNode, error) {
 	if err := m.SetComments(nodes); err != nil {
 		return nil, err
 	}
@@ -73,7 +79,7 @@ func (m Merger) VisitScalar(nodes walk.Sources) (*yaml.RNode, error) {
 	return nodes.Dest(), nil
 }
 
-func (m Merger) VisitList(nodes walk.Sources, kind walk.ListKind) (*yaml.RNode, error) {
+func (m Merger) VisitList(nodes walk.Sources, s *openapi.ResourceSchema, kind walk.ListKind) (*yaml.RNode, error) {
 	if err := m.SetComments(nodes); err != nil {
 		return nil, err
 	}

kyaml/yaml/merge2/merge2_old_test.go

@@ -365,7 +365,7 @@ a:
   b:
     # header comment
     c: d
-`)
+`, true)
 	if !assert.NoError(t, err) {
 		return
 	}
@@ -385,7 +385,7 @@ a:
   b:
     c: d
     # footer comment
-`)
+`, true)
 	if !assert.NoError(t, err) {
 		return
 	}
@@ -404,7 +404,7 @@ a:
 a:
   b:
     c: d # line comment
-`)
+`, true)
 	if !assert.NoError(t, err) {
 		return
 	}
@@ -426,7 +426,7 @@ a:
   b:
     # replace comment
     c: d
-`)
+`, true)
 	if !assert.NoError(t, err) {
 		return
 	}
@@ -447,7 +447,7 @@ a:
   b:
     c: d
     # replace comment
-`)
+`, true)
 	if !assert.NoError(t, err) {
 		return
 	}
@@ -466,7 +466,7 @@ a:
 a:
   b:
     c: d # replace comment
-`)
+`, true)
 	if !assert.NoError(t, err) {
 		return
 	}
@@ -484,7 +484,7 @@ a:
 a:
   b:
     c: d # replace comment
-`)
+`, true)
 	if !assert.NoError(t, err) {
 		return
 	}

kyaml/yaml/merge2/merge2_test.go

@@ -17,24 +17,27 @@ var testCases = [][]testCase{scalarTestCases, listTestCases, elementTestCases, m
 
 func TestMerge(t *testing.T) {
 	for i := range testCases {
-		for _, tc := range testCases[i] {
-			actual, err := MergeStrings(tc.source, tc.dest)
-			if !assert.NoError(t, err, tc.description) {
-				t.FailNow()
-			}
-			e, err := filters.FormatInput(bytes.NewBufferString(tc.expected))
-			if !assert.NoError(t, err) {
-				t.FailNow()
-			}
-			estr := strings.TrimSpace(e.String())
-			a, err := filters.FormatInput(bytes.NewBufferString(actual))
-			if !assert.NoError(t, err) {
-				t.FailNow()
-			}
-			astr := strings.TrimSpace(a.String())
-			if !assert.Equal(t, estr, astr, tc.description) {
-				t.FailNow()
-			}
+		for j := range testCases[i] {
+			tc := testCases[i][j]
+			t.Run(tc.description, func(t *testing.T) {
+				actual, err := MergeStrings(tc.source, tc.dest, tc.infer)
+				if !assert.NoError(t, err, tc.description) {
+					t.FailNow()
+				}
+				e, err := filters.FormatInput(bytes.NewBufferString(tc.expected))
+				if !assert.NoError(t, err) {
+					t.FailNow()
+				}
+				estr := strings.TrimSpace(e.String())
+				a, err := filters.FormatInput(bytes.NewBufferString(actual))
+				if !assert.NoError(t, err) {
+					t.FailNow()
+				}
+				astr := strings.TrimSpace(a.String())
+				if !assert.Equal(t, estr, astr, tc.description) {
+					t.FailNow()
+				}
+			})
 		}
 	}
 }
@@ -44,4 +47,5 @@ type testCase struct {
 	source      string
 	dest        string
 	expected    string
+	infer       bool
 }

kyaml/yaml/merge2/scalar_test.go

@@ -4,30 +4,30 @@
 package merge2_test
 
 var scalarTestCases = []testCase{
-	{`replace scalar -- different value in dest`,
-		`
+	{description: `replace scalar -- different value in dest`,
+		source: `
 kind: Deployment
 field: value1
 `,
-		`
+		dest: `
 kind: Deployment
 field: value0
 `,
-		`
+		expected: `
 kind: Deployment
 field: value1
 `,
 	},
 
-	{`replace scalar -- missing from dest`,
-		`
+	{description: `replace scalar -- missing from dest`,
+		source: `
 kind: Deployment
 field: value1
 `,
-		`
+		dest: `
 kind: Deployment
 `,
-		`
+		expected: `
 kind: Deployment
 field: value1
 `,
@@ -36,16 +36,16 @@ field: value1
 	//
 	// Test Case
 	//
-	{`keep scalar -- same value in src and dest`,
-		`
+	{description: `keep scalar -- same value in src and dest`,
+		source: `
 kind: Deployment
 field: value1
 `,
-		`
+		dest: `
 kind: Deployment
 field: value1
 `,
-		`
+		expected: `
 kind: Deployment
 field: value1
 `,
@@ -54,15 +54,15 @@ field: value1
 	//
 	// Test Case
 	//
-	{`keep scalar -- unspecified in src`,
-		`
+	{description: `keep scalar -- unspecified in src`,
+		source: `
 kind: Deployment
 `,
-		`
+		dest: `
 kind: Deployment
 field: value1
 `,
-		`
+		expected: `
 kind: Deployment
 field: value1
 `,
@@ -71,16 +71,16 @@ field: value1
 	//
 	// Test Case
 	//
-	{`remove scalar -- null in src`,
-		`
+	{description: `remove scalar -- null in src`,
+		source: `
 kind: Deployment
 field: null
 `,
-		`
+		dest: `
 kind: Deployment
 field: value1
 `,
-		`
+		expected: `
 kind: Deployment
 `,
 	},
@@ -88,16 +88,16 @@ kind: Deployment
 	//
 	// Test Case
 	//
-	{`remove scalar -- empty in src`,
-		`
+	{description: `remove scalar -- empty in src`,
+		source: `
 kind: Deployment
 field: {}
 `,
-		`
+		dest: `
 kind: Deployment
 field: value1
 `,
-		`
+		expected: `
 kind: Deployment
 field: {}
 `,
@@ -106,15 +106,15 @@ field: {}
 	//
 	// Test Case
 	//
-	{`remove scalar -- null in src, missing in dest`,
-		`
+	{description: `remove scalar -- null in src, missing in dest`,
+		source: `
 kind: Deployment
 field: null
 `,
-		`
+		dest: `
 kind: Deployment
 `,
-		`
+		expected: `
 kind: Deployment
 `,
 	},
@@ -122,15 +122,15 @@ kind: Deployment
 	//
 	// Test Case
 	//
-	{`merge an empty value`,
-		`
+	{description: `merge an empty value`,
+		source: `
 kind: Deployment
 field: {}
 `,
-		`
+		dest: `
 kind: Deployment
 `,
-		`
+		expected: `
 kind: Deployment
 field: {}
 `,

kyaml/yaml/merge3/list_test.go

@@ -9,224 +9,226 @@ var listTestCases = []testCase{
 	//
 	// Test Case
 	//
-	{`Replace list`,
-		`
+	{description: `Replace list`,
+		origin: `
 list:
 - 1
 - 2
 - 3`,
-		`
+		update: `
 list:
 - 2
 - 3
 - 4`,
-		`
+		local: `
 list:
 - 1
 - 2
 - 3`,
-		`
+		expected: `
 list:
 - 2
 - 3
-- 4`, nil},
+- 4`},
 
 	//
 	// Test Case
 	//
-	{`Add an updated list`,
-		`
+	{description: `Add an updated list`,
+		origin: `
 apiVersion: apps/v1
 list: # old value
 - 1
 - 2
 - 3
 `,
-		`
+		update: `
 apiVersion: apps/v1
 list: # new value
 - 2
 - 3
 - 4
 `,
-		`
+		local: `
 apiVersion: apps/v1`,
-		`
+		expected: `
 apiVersion: apps/v1
 list:
 - 2
 - 3
 - 4
-`, nil},
+`},
 
 	//
 	// Test Case
 	//
-	{`Add keep an omitted field`,
-		`
+	{description: `Add keep an omitted field`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: StatefulSet`,
-		`
+		local: `
 apiVersion: apps/v1
 list: # not present in sources
 - 2
 - 3
 - 4
 `,
-		`
+		expected: `
 apiVersion: apps/v1
 list: # not present in sources
 - 2
 - 3
 - 4
 kind: StatefulSet
-`, nil},
+`},
 
 	//
 	// Test Case
 	//
 	// TODO(#36): consider making this an error
-	{`Change an updated field`,
-		`
+	{description: `Change an updated field`,
+		origin: `
 apiVersion: apps/v1
 list: # old value
 - 1
 - 2
 - 3`,
-		`
+		update: `
 apiVersion: apps/v1
 list: # new value
 - 2
 - 3
 - 4`,
-		`
+		local: `
 apiVersion: apps/v1
 list: # conflicting value
 - a
 - b
 - c`,
-		`
+		expected: `
 apiVersion: apps/v1
 list: # conflicting value
 - 2
 - 3
 - 4
-`, nil},
+`},
 
 	//
 	// Test Case
 	//
-	{`Ignore a field -- set`,
-		`
+	{description: `Ignore a field -- set`,
+		origin: `
 apiVersion: apps/v1
 list: # ignore value
 - 1
 - 2
 - 3
 `,
-		`
+		update: `
 apiVersion: apps/v1
 list: # ignore value
 - 1
 - 2
-- 3`, `
+- 3`,
+		local: `
 apiVersion: apps/v1
 list:
 - 2
 - 3
 - 4
-`, `
+`,
+		expected: `
 apiVersion: apps/v1
 list:
 - 2
 - 3
 - 4
-`, nil},
+`},
 
 	//
 	// Test Case
 	//
-	{`Ignore a field -- empty`,
-		`
+	{description: `Ignore a field -- empty`,
+		origin: `
 apiVersion: apps/v1
 list: # ignore value
 - 1
 - 2
 - 3`,
-		`
+		update: `
 apiVersion: apps/v1
 list: # ignore value
 - 1
 - 2
 - 3`,
-		`
+		local: `
 apiVersion: apps/v1
 `,
-		`
+		expected: `
 apiVersion: apps/v1
-`, nil},
+`},
 
 	//
 	// Test Case
 	//
-	{`Explicitly clear a field`,
-		`
+	{description: `Explicitly clear a field`,
+		origin: `
 apiVersion: apps/v1`,
-		`
+		update: `
 apiVersion: apps/v1
 list: null # clear`,
-		`
+		local: `
 apiVersion: apps/v1
 list: # value to clear
 - 1
 - 2
 - 3`,
-		`
-apiVersion: apps/v1`, nil},
+		expected: `
+apiVersion: apps/v1`},
 
 	//
 	// Test Case
 	//
-	{`Implicitly clear a field`,
-		`
+	{description: `Implicitly clear a field`,
+		origin: `
 apiVersion: apps/v1
 list: # clear value
 - 1
 - 2
 - 3`,
-		`
+		update: `
 apiVersion: apps/v1`,
-		`
+		local: `
 apiVersion: apps/v1
 list: # old value
 - 1
 - 2
 - 3`,
-		`
-apiVersion: apps/v1`, nil},
+		expected: `
+apiVersion: apps/v1`},
 
 	//
 	// Test Case
 	//
 	// TODO(#36): consider making this an error
-	{`Implicitly clear a changed field`,
-		`
+	{description: `Implicitly clear a changed field`,
+		origin: `
 apiVersion: apps/v1
 list: # old value
 - 1
 - 2
 - 3`,
-		`
+		update: `
 apiVersion: apps/v1`,
-		`
+		local: `
 apiVersion: apps/v1
 list: # old value
 - a
 - b
 - c`,
-		`
-apiVersion: apps/v1`, nil},
+		expected: `
+apiVersion: apps/v1`},
 }

kyaml/yaml/merge3/map_test.go

@@ -7,267 +7,267 @@ var mapTestCases = []testCase{
 	//
 	// Test Case
 	//
-	{`Add the annotations map field`,
-		`
+	{description: `Add the annotations map field`,
+		origin: `
 kind: Deployment`,
-		`
+		update: `
 kind: Deployment
 metadata:
   annotations:
     d: e # add these annotations
 `,
-		`
+		local: `
 kind: Deployment`,
-		`
+		expected: `
 kind: Deployment
 metadata:
   annotations:
-    d: e # add these annotations`, nil},
+    d: e # add these annotations`},
 
 	//
 	// Test Case
 	//
-	{`Add an annotation to the field`,
-		`
+	{description: `Add an annotation to the field`,
+		origin: `
 kind: Deployment
 metadata:
   annotations:
     a: b`,
-		`
+		update: `
 kind: Deployment
 metadata:
   annotations:
     a: b
     d: e  # add these annotations`,
-		`
+		local: `
 kind: Deployment
 metadata:
   annotations:
     g: h  # keep these annotations`,
-		`
+		expected: `
 kind: Deployment
 metadata:
   annotations:
     g: h # keep these annotations
-    d: e # add these annotations`, nil},
+    d: e # add these annotations`},
 
 	//
 	// Test Case
 	//
-	{`Add an annotation to the field, field missing from dest`,
-		`
+	{description: `Add an annotation to the field, field missing from dest`,
+		origin: `
 kind: Deployment
 metadata:
   annotations:
     a: b # ignored because unchanged`,
-		`
+		update: `
 kind: Deployment
 metadata:
   annotations:
     a: b # ignore because unchanged
     d: e`,
-		`
+		local: `
 kind: Deployment`,
-		`
+		expected: `
 kind: Deployment
 metadata:
   annotations:
-    d: e`, nil},
+    d: e`},
 
 	//
 	// Test Case
 	//
-	{`Update an annotation on the field, field messing rom the dest`,
-		`
+	{description: `Update an annotation on the field, field messing rom the dest`,
+		origin: `
 kind: Deployment
 metadata:
   annotations:
     a: b
     d: c`,
-		`
+		update: `
 kind: Deployment
 metadata:
   annotations:
     a: b
     d: e  # set these annotations`,
-		`
+		local: `
 kind: Deployment
 metadata:
   annotations:
     g: h  # keep these annotations`,
-		`
+		expected: `
 kind: Deployment
 metadata:
   annotations:
     g: h # keep these annotations
-    d: e # set these annotations`, nil},
+    d: e # set these annotations`},
 
 	//
 	// Test Case
 	//
-	{`Add an annotation to the field, field missing from dest`,
-		`
+	{description: `Add an annotation to the field, field missing from dest`,
+		origin: `
 kind: Deployment
 metadata:
   annotations:
     a: b # ignored because unchanged`,
-		`
+		update: `
 kind: Deployment
 metadata:
   annotations:
     a: b # ignore because unchanged
     d: e`,
-		`
+		local: `
 kind: Deployment`,
-		`
+		expected: `
 kind: Deployment
 metadata:
   annotations:
-    d: e`, nil},
+    d: e`},
 
 	//
 	// Test Case
 	//
-	{`Remove an annotation`,
-		`
+	{description: `Remove an annotation`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations:
     a: b`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations: {}`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations:
     c: d
     a: b`,
-		`
+		expected: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations:
-    c: d`, nil},
+    c: d`},
 
 	//
 	// Test Case
 	//
 	// TODO(#36) support ~annotations~: {} deletion
-	{`Specify a field as empty that isn't present in the source`,
-		`
+	{description: `Specify a field as empty that isn't present in the source`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo
   annotations: null`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo
   annotations:
     a: b`,
-		`
+		expected: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: foo`, nil},
+  name: foo`},
 
 	//
 	// Test Case
 	//
-	{`Remove an annotation`,
-		`
+	{description: `Remove an annotation`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations:
     a: b`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: Deployment`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations:
     c: d
     a: b`,
-		`
+		expected: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations:
-    c: d`, nil},
+    c: d`},
 
 	//
 	// Test Case
 	//
-	{`Remove annotations field`,
-		`
+	{description: `Remove annotations field`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations:
     a: b`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: Deployment`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo`,
-		`
+		expected: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo
-`, nil},
+`},
 
 	//
 	// Test Case
 	//
-	{`Remove annotations field, but keep in dest`,
-		`
+	{description: `Remove annotations field, but keep in dest`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   annotations:
     a: b`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: Deployment`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo
   annotations:
     foo: bar # keep this annotation even though the parent field was removed`,
-		`
+		expected: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo
   annotations:
-    foo: bar # keep this annotation even though the parent field was removed`, nil},
+    foo: bar # keep this annotation even though the parent field was removed`},
 
 	//
 	// Test Case
 	//
-	{`Remove annotations, but they are already empty`,
-		`
+	{description: `Remove annotations, but they are already empty`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -275,24 +275,24 @@ metadata:
   annotations:
     a: b
 `,
-		`
+		update: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo
 `,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo
   annotations: {}
 `,
-		`
+		expected: `
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: foo
   annotations: {}
-`, nil},
+`},
 }

kyaml/yaml/merge3/merge3.go

@@ -13,11 +13,12 @@ import (
 func Merge(dest, original, update *yaml.RNode) (*yaml.RNode, error) {
 	// if update == nil && original != nil => declarative deletion
 
-	return walk.Walker{Visitor: Visitor{},
+	return walk.Walker{
+		Visitor: Visitor{},
 		Sources: []*yaml.RNode{dest, original, update}}.Walk()
 }
 
-func MergeStrings(dest, original, update string) (string, error) {
+func MergeStrings(dest, original, update string, infer bool) (string, error) {
 	srcOriginal, err := yaml.Parse(original)
 	if err != nil {
 		return "", err
@@ -31,7 +32,10 @@ func MergeStrings(dest, original, update string) (string, error) {
 		return "", err
 	}
 
-	result, err := Merge(d, srcOriginal, srcUpdated)
+	result, err := walk.Walker{
+		InferAssociativeLists: infer,
+		Visitor:               Visitor{},
+		Sources:               []*yaml.RNode{d, srcOriginal, srcUpdated}}.Walk()
 	if err != nil {
 		return "", err
 	}

kyaml/yaml/merge3/merge3_test.go

@@ -15,24 +15,27 @@ var testCases = [][]testCase{scalarTestCases, listTestCases, mapTestCases, eleme
 
 func TestMerge(t *testing.T) {
 	for i := range testCases {
-		for _, tc := range testCases[i] {
-			actual, err := MergeStrings(tc.local, tc.origin, tc.update)
-			if tc.err == nil {
-				if !assert.NoError(t, err, tc.description) {
-					t.FailNow()
+		for j := range testCases[i] {
+			tc := testCases[i][j]
+			t.Run(tc.description, func(t *testing.T) {
+				actual, err := MergeStrings(tc.local, tc.origin, tc.update, tc.infer)
+				if tc.err == nil {
+					if !assert.NoError(t, err, tc.description) {
+						t.FailNow()
+					}
+					if !assert.Equal(t,
+						strings.TrimSpace(tc.expected), strings.TrimSpace(actual), tc.description) {
+						t.FailNow()
+					}
+				} else {
+					if !assert.Errorf(t, err, tc.description) {
+						t.FailNow()
+					}
+					if !assert.Contains(t, tc.err.Error(), err.Error()) {
+						t.FailNow()
+					}
 				}
-				if !assert.Equal(t,
-					strings.TrimSpace(tc.expected), strings.TrimSpace(actual), tc.description) {
-					t.FailNow()
-				}
-			} else {
-				if !assert.Errorf(t, err, tc.description) {
-					t.FailNow()
-				}
-				if !assert.Contains(t, tc.err.Error(), err.Error()) {
-					t.FailNow()
-				}
-			}
+			})
 		}
 	}
 }
@@ -44,4 +47,5 @@ type testCase struct {
 	local       string
 	expected    string
 	err         error
+	infer       bool
 }

kyaml/yaml/merge3/scalar_test.go

@@ -8,128 +8,128 @@ var scalarTestCases = []testCase{
 	//
 	// Test Case
 	//
-	{`Set and updated a field`,
-		`kind: Deployment`,
-		`kind: StatefulSet`,
-		`kind: Deployment`,
-		`kind: StatefulSet`, nil},
+	{description: `Set and updated a field`,
+		origin:   `kind: Deployment`,
+		update:   `kind: StatefulSet`,
+		local:    `kind: Deployment`,
+		expected: `kind: StatefulSet`},
 
-	{`Add an updated field`,
-		`
+	{description: `Add an updated field`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment # old value`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: StatefulSet # new value`,
-		`
+		local: `
 apiVersion: apps/v1`,
-		`
+		expected: `
 apiVersion: apps/v1
-kind: StatefulSet # new value`, nil},
+kind: StatefulSet # new value`},
 
-	{`Add keep an omitted field`,
-		`
+	{description: `Add keep an omitted field`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: StatefulSet`,
-		`
+		local: `
 apiVersion: apps/v1
 spec: foo # field not present in source
 `,
-		`
+		expected: `
 apiVersion: apps/v1
 spec: foo # field not present in source
 kind: StatefulSet
-`, nil},
+`},
 
 	//
 	// Test Case
 	//
 	// TODO(#36): consider making this an error
-	{`Change an updated field`,
-		`
+	{description: `Change an updated field`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment # old value`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: StatefulSet # new value`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Service # conflicting value`,
-		`
+		expected: `
 apiVersion: apps/v1
-kind: StatefulSet # new value`, nil},
+kind: StatefulSet # new value`},
 
-	{`Ignore a field`,
-		`
+	{description: `Ignore a field`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment # ignore this field`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: Deployment # ignore this field`,
-		`
+		local: `
 apiVersion: apps/v1`,
-		`
-apiVersion: apps/v1`, nil},
+		expected: `
+apiVersion: apps/v1`},
 
-	{`Explicitly clear a field`,
-		`
+	{description: `Explicitly clear a field`,
+		origin: `
 apiVersion: apps/v1`,
-		`
+		update: `
 apiVersion: apps/v1
 kind: null # clear this value`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Deployment # value to be cleared`,
-		`
-apiVersion: apps/v1`, nil},
+		expected: `
+apiVersion: apps/v1`},
 
-	{`Implicitly clear a field`,
-		`
+	{description: `Implicitly clear a field`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment # clear this field`,
-		`
+		update: `
 apiVersion: apps/v1`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: Deployment # clear this field`,
-		`
-apiVersion: apps/v1`, nil},
+		expected: `
+apiVersion: apps/v1`},
 
 	//
 	// Test Case
 	//
 	// TODO(#36): consider making this an error
-	{`Implicitly clear a changed field`,
-		`
+	{description: `Implicitly clear a changed field`,
+		origin: `
 apiVersion: apps/v1
 kind: Deployment`,
-		`
+		update: `
 apiVersion: apps/v1`,
-		`
+		local: `
 apiVersion: apps/v1
 kind: StatefulSet`,
-		`
-apiVersion: apps/v1`, nil},
+		expected: `
+apiVersion: apps/v1`},
 
 	//
 	// Test Case
 	//
-	{`Merge an empty scalar value`,
-		`
+	{description: `Merge an empty scalar value`,
+		origin: `
 apiVersion: apps/v1
 `,
-		`
+		update: `
 apiVersion: apps/v1
 kind: {}
 `,
-		`
+		local: `
 apiVersion: apps/v1
 `,
-		`
+		expected: `
 apiVersion: apps/v1
 kind: {}
-`, nil},
+`},
 }

kyaml/yaml/merge3/visitor.go

@@ -4,6 +4,7 @@
 package merge3
 
 import (
+	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 	"sigs.k8s.io/kustomize/kyaml/yaml/walk"
 )
@@ -17,7 +18,7 @@ const (
 
 type Visitor struct{}
 
-func (m Visitor) VisitMap(nodes walk.Sources) (*yaml.RNode, error) {
+func (m Visitor) VisitMap(nodes walk.Sources, s *openapi.ResourceSchema) (*yaml.RNode, error) {
 	if yaml.IsNull(nodes.Updated()) || yaml.IsNull(nodes.Dest()) {
 		// explicitly cleared from either dest or update
 		return walk.ClearNode, nil
@@ -36,7 +37,7 @@ func (m Visitor) VisitMap(nodes walk.Sources) (*yaml.RNode, error) {
 	return nodes.Dest(), nil
 }
 
-func (m Visitor) visitAList(nodes walk.Sources) (*yaml.RNode, error) {
+func (m Visitor) visitAList(nodes walk.Sources, _ *openapi.ResourceSchema) (*yaml.RNode, error) {
 	if yaml.IsEmpty(nodes.Updated()) && !yaml.IsEmpty(nodes.Origin()) {
 		// implicitly cleared from update -- element was deleted
 		return walk.ClearNode, nil
@@ -51,7 +52,7 @@ func (m Visitor) visitAList(nodes walk.Sources) (*yaml.RNode, error) {
 	return nodes.Dest(), nil
 }
 
-func (m Visitor) VisitScalar(nodes walk.Sources) (*yaml.RNode, error) {
+func (m Visitor) VisitScalar(nodes walk.Sources, s *openapi.ResourceSchema) (*yaml.RNode, error) {
 	if yaml.IsNull(nodes.Updated()) || yaml.IsNull(nodes.Dest()) {
 		// explicitly cleared from either dest or update
 		return nil, nil
@@ -103,9 +104,9 @@ func (m Visitor) visitNAList(nodes walk.Sources) (*yaml.RNode, error) {
 	return nodes.Dest(), nil
 }
 
-func (m Visitor) VisitList(nodes walk.Sources, kind walk.ListKind) (*yaml.RNode, error) {
+func (m Visitor) VisitList(nodes walk.Sources, s *openapi.ResourceSchema, kind walk.ListKind) (*yaml.RNode, error) {
 	if kind == walk.AssociativeList {
-		return m.visitAList(nodes)
+		return m.visitAList(nodes, s)
 	}
 	// non-associative list
 	return m.visitNAList(nodes)

kyaml/yaml/schema/schema.go

@@ -0,0 +1,34 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package schema contains libraries for working with the yaml and openapi packages.
+package schema
+
+import (
+	"sigs.k8s.io/kustomize/kyaml/openapi"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// IsAssociative returns true if all elements in the list contain an AssociativeSequenceKey
+// as a field.
+func IsAssociative(schema *openapi.ResourceSchema, nodes []*yaml.RNode, infer bool) bool {
+	if schema != nil {
+		// use the schema to identify if the list is associative
+		s, _ := schema.PatchStrategyAndKey()
+		return s == "merge"
+	}
+	if !infer {
+		return false
+	}
+
+	for i := range nodes {
+		node := nodes[i]
+		if yaml.IsEmpty(node) {
+			continue
+		}
+		if node.IsAssociative() {
+			return true
+		}
+	}
+	return false
+}

kyaml/yaml/types.go

@@ -588,6 +588,12 @@ func (rn *RNode) VisitFields(fn func(node *MapNode) error) error {
 	return nil
 }
 
+const (
+	StringTag = "!!str"
+	BoolTag   = "!!bool"
+	IntTag    = "!!int"
+)
+
 // Elements returns the list of elements in the RNode.
 // Returns an error for non-SequenceNodes.
 func (rn *RNode) Elements() ([]*RNode, error) {
@@ -651,24 +657,8 @@ func (rn *RNode) VisitElements(fn func(node *RNode) error) error {
 // The order sets the precedence of the merge keys -- if multiple keys are present
 // in Resources in a list, then the FIRST key which ALL elements in the list have is used as the
 // associative key for merging that list.
-var AssociativeSequenceKeys = []string{
-	"mountPath", "devicePath", "ip", "type", "topologyKey", "name", "containerPort",
-}
-
-// IsAssociative returns true if all elements in the list contain an AssociativeSequenceKey
-// as a field.
-func IsAssociative(nodes []*RNode) bool {
-	for i := range nodes {
-		node := nodes[i]
-		if IsEmpty(node) {
-			continue
-		}
-		if node.IsAssociative() {
-			return true
-		}
-	}
-	return false
-}
+// Only infer name as a merge key.
+var AssociativeSequenceKeys = []string{"name"}
 
 // IsAssociative returns true if the RNode contains an AssociativeSequenceKey as a field.
 func (rn *RNode) IsAssociative() bool {

kyaml/yaml/walk/associative_sequence.go

@@ -7,28 +7,45 @@ import (
 	"strings"
 
 	"github.com/go-errors/errors"
+	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/sets"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 func (l *Walker) walkAssociativeSequence() (*yaml.RNode, error) {
 	// may require initializing the dest node
-	dest, err := l.Sources.setDestNode(l.VisitList(l.Sources, AssociativeList))
+	dest, err := l.Sources.setDestNode(l.VisitList(l.Sources, l.Schema, AssociativeList))
 	if dest == nil || err != nil {
 		return nil, err
 	}
 
-	// find the list of elements we need to recursively walk
-	key, err := l.elementKey()
-	if err != nil {
-		return nil, err
+	var key string
+	if l.Schema != nil {
+		_, key = l.Schema.PatchStrategyAndKey()
 	}
+	if key == "" { // no key from the schema, try to infer one
+		// find the list of elements we need to recursively walk
+		key, err = l.elementKey()
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	values := l.elementValues(key)
 
 	// recursively set the elements in the list
+	var s *openapi.ResourceSchema
+	if l.Schema != nil {
+		s = l.Schema.Elements()
+	}
 	for _, value := range values {
-		val, err := Walker{Visitor: l,
-			Sources: l.elementValue(key, value)}.Walk()
+		val, err := Walker{
+			VisitKeysAsScalars:    l.VisitKeysAsScalars,
+			InferAssociativeLists: l.InferAssociativeLists,
+			Visitor:               l,
+			Schema:                s,
+			Sources:               l.elementValue(key, value),
+		}.Walk()
 		if err != nil {
 			return nil, err
 		}

kyaml/yaml/walk/map.go

@@ -6,6 +6,8 @@ package walk
 import (
 	"sort"
 
+	"sigs.k8s.io/kustomize/kyaml/fieldmeta"
+	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/sets"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
@@ -18,15 +20,54 @@ import (
 // - set each source field value on l.Dest
 func (l Walker) walkMap() (*yaml.RNode, error) {
 	// get the new map value
-	dest, err := l.Sources.setDestNode(l.VisitMap(l.Sources))
+	dest, err := l.Sources.setDestNode(l.VisitMap(l.Sources, l.Schema))
 	if dest == nil || err != nil {
 		return nil, err
 	}
 
 	// recursively set the field values on the map
 	for _, key := range l.fieldNames() {
-		val, err := Walker{Visitor: l,
-			Sources: l.fieldValue(key), Path: append(l.Path, key)}.Walk()
+		if l.VisitKeysAsScalars {
+			// visit the map keys as if they were scalars,
+			// this is necessary if doing things such as copying
+			// comments
+			var keys []*yaml.RNode
+			for i := range l.Sources {
+				// construct the sources from the keys
+				if l.Sources[i] == nil {
+					keys = append(keys, nil)
+					continue
+				}
+				field := l.Sources[i].Field(key)
+				if field == nil || yaml.IsEmpty(field.Key) {
+					keys = append(keys, nil)
+					continue
+				}
+				keys = append(keys, field.Key)
+			}
+			// visit the sources as a scalar
+			// keys don't have any schema --pass in nil
+			_, err := l.Visitor.VisitScalar(keys, nil)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		var s *openapi.ResourceSchema
+		if l.Schema != nil {
+			s = l.Schema.Field(key)
+		}
+		fv, commentSch := l.fieldValue(key)
+		if commentSch != nil {
+			s = commentSch
+		}
+		val, err := Walker{
+			VisitKeysAsScalars:    l.VisitKeysAsScalars,
+			InferAssociativeLists: l.InferAssociativeLists,
+			Visitor:               l,
+			Schema:                s,
+			Sources:               fv,
+			Path:                  append(l.Path, key)}.Walk()
 		if err != nil {
 			return nil, err
 		}
@@ -42,11 +83,40 @@ func (l Walker) walkMap() (*yaml.RNode, error) {
 }
 
 // valueIfPresent returns node.Value if node is non-nil, otherwise returns nil
-func (l Walker) valueIfPresent(node *yaml.MapNode) *yaml.RNode {
+func (l Walker) valueIfPresent(node *yaml.MapNode) (*yaml.RNode, *openapi.ResourceSchema) {
 	if node == nil {
-		return nil
+		return nil, nil
 	}
-	return node.Value
+
+	// parse the schema for the field if present
+	var s *openapi.ResourceSchema
+	fm := fieldmeta.FieldMeta{}
+	var err error
+	// check the value for a schema
+	if err = fm.Read(node.Value); err == nil {
+		s = &openapi.ResourceSchema{Schema: &fm.Schema}
+		if fm.Schema.Ref.String() != "" {
+			r, err := openapi.Resolve(&fm.Schema.Ref)
+			if err == nil && r != nil {
+				s.Schema = r
+			}
+		}
+	}
+	// check the key for a schema -- this will be used
+	// when the value is a Sequence (comments are attached)
+	// to the key
+	if fm.IsEmpty() {
+		if err = fm.Read(node.Key); err == nil {
+			s = &openapi.ResourceSchema{Schema: &fm.Schema}
+		}
+		if fm.Schema.Ref.String() != "" {
+			r, err := openapi.Resolve(&fm.Schema.Ref)
+			if err == nil && r != nil {
+				s.Schema = r
+			}
+		}
+	}
+	return node.Value, s
 }
 
 // fieldNames returns a sorted slice containing the names of all fields that appear in any of
@@ -67,15 +137,20 @@ func (l Walker) fieldNames() []string {
 }
 
 // fieldValue returns a slice containing each source's value for fieldName
-func (l Walker) fieldValue(fieldName string) []*yaml.RNode {
+func (l Walker) fieldValue(fieldName string) ([]*yaml.RNode, *openapi.ResourceSchema) {
 	var fields []*yaml.RNode
+	var sch *openapi.ResourceSchema
 	for i := range l.Sources {
 		if l.Sources[i] == nil {
 			fields = append(fields, nil)
 			continue
 		}
 		field := l.Sources[i].Field(fieldName)
-		fields = append(fields, l.valueIfPresent(field))
+		f, s := l.valueIfPresent(field)
+		fields = append(fields, f)
+		if sch == nil && !s.IsEmpty() {
+			sch = s
+		}
 	}
-	return fields
+	return fields, sch
 }

kyaml/yaml/walk/nonassociative_sequence.go

@@ -9,5 +9,5 @@ import (
 
 // walkNonAssociativeSequence returns the value of VisitList
 func (l Walker) walkNonAssociativeSequence() (*yaml.RNode, error) {
-	return l.VisitList(l.Sources, NonAssociateList)
+	return l.VisitList(l.Sources, l.Schema, NonAssociateList)
 }

kyaml/yaml/walk/scalar.go

@@ -7,5 +7,5 @@ import "sigs.k8s.io/kustomize/kyaml/yaml"
 
 // walkScalar returns the value of VisitScalar
 func (l Walker) walkScalar() (*yaml.RNode, error) {
-	return l.VisitScalar(l.Sources)
+	return l.VisitScalar(l.Sources, l.Schema)
 }

kyaml/yaml/walk/visitor.go

@@ -4,6 +4,7 @@
 package walk
 
 import (
+	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
@@ -16,11 +17,11 @@ const (
 
 // Visitor is invoked by walk with source and destination node pairs
 type Visitor interface {
-	VisitMap(nodes Sources) (*yaml.RNode, error)
+	VisitMap(Sources, *openapi.ResourceSchema) (*yaml.RNode, error)
 
-	VisitScalar(nodes Sources) (*yaml.RNode, error)
+	VisitScalar(Sources, *openapi.ResourceSchema) (*yaml.RNode, error)
 
-	VisitList(nodes Sources, kind ListKind) (*yaml.RNode, error)
+	VisitList(Sources, *openapi.ResourceSchema, ListKind) (*yaml.RNode, error)
 }
 
 // ClearNode is returned if GrepFilter should do nothing after calling Set

kyaml/yaml/walk/walk.go

@@ -8,20 +8,34 @@ import (
 	"os"
 	"strings"
 
+	"sigs.k8s.io/kustomize/kyaml/fieldmeta"
+	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
+	"sigs.k8s.io/kustomize/kyaml/yaml/schema"
 )
 
-// Filter walks the Source RNode and modifies the RNode provided to GrepFilter.
+// Walker walks the Source RNode and modifies the RNode provided to GrepFilter.
 type Walker struct {
 	// Visitor is invoked by GrepFilter
 	Visitor
 
+	Schema *openapi.ResourceSchema
+
 	// Source is the RNode to walk.  All Source fields and associative list elements
 	// will be visited.
 	Sources Sources
 
 	// Path is the field path to the current Source Node.
 	Path []string
+
+	// InferAssociativeLists if set to true will infer merge strategies for
+	// fields which it doesn't have the schema based on the fields in the
+	// list elements.
+	InferAssociativeLists bool
+
+	// VisitKeysAsScalars if true will call VisitScalar on map entry keys,
+	// providing nil as the OpenAPI schema.
+	VisitKeysAsScalars bool
 }
 
 func (l Walker) Kind() yaml.Kind {
@@ -35,6 +49,8 @@ func (l Walker) Kind() yaml.Kind {
 
 // GrepFilter implements yaml.GrepFilter
 func (l Walker) Walk() (*yaml.RNode, error) {
+	l.Schema = l.GetSchema()
+
 	// invoke the handler for the corresponding node type
 	switch l.Kind() {
 	case yaml.MappingNode:
@@ -46,7 +62,7 @@ func (l Walker) Walk() (*yaml.RNode, error) {
 		if err := yaml.ErrorIfAnyInvalidAndNonNull(yaml.SequenceNode, l.Sources...); err != nil {
 			return nil, err
 		}
-		if yaml.IsAssociative(l.Sources) {
+		if schema.IsAssociative(l.Schema, l.Sources, l.InferAssociativeLists) {
 			return l.walkAssociativeSequence()
 		}
 		return l.walkNonAssociativeSequence()
@@ -64,6 +80,49 @@ func (l Walker) Walk() (*yaml.RNode, error) {
 	}
 }
 
+func (l Walker) GetSchema() *openapi.ResourceSchema {
+	for i := range l.Sources {
+		r := l.Sources[i]
+		if yaml.IsEmpty(r) {
+			continue
+		}
+
+		fm := fieldmeta.FieldMeta{}
+		if err := fm.Read(r); err == nil && !fm.IsEmpty() {
+			// per-field schema, this is fine
+			if fm.Schema.Ref.String() != "" {
+				// resolve the reference
+				s, err := openapi.Resolve(&fm.Schema.Ref)
+				if err == nil && s != nil {
+					fm.Schema = *s
+				}
+			}
+			return &openapi.ResourceSchema{Schema: &fm.Schema}
+		}
+	}
+
+	if l.Schema != nil {
+		return l.Schema
+	}
+	for i := range l.Sources {
+		r := l.Sources[i]
+		if yaml.IsEmpty(r) {
+			continue
+		}
+
+		m, _ := r.GetMeta()
+		if m.Kind == "" || m.APIVersion == "" {
+			continue
+		}
+
+		s := openapi.SchemaForResourceType(yaml.TypeMeta{Kind: m.Kind, APIVersion: m.APIVersion})
+		if s != nil {
+			return s
+		}
+	}
+	return nil
+}
+
 const (
 	DestIndex = iota
 	OriginIndex

plugin/builtin/imagetagtransformer/ImageTagTransformer.go

@@ -148,8 +148,10 @@ func (p *plugin) findContainers(obj map[string]interface{}) error {
 }
 
 func isImageMatched(s, t string) bool {
-	// Tag values are limited to [a-zA-Z0-9_.-].
-	pattern, _ := regexp.Compile("^" + t + "(@sha256)?(:[a-zA-Z0-9_.-]*)?$")
+	// Tag values are limited to [a-zA-Z0-9_.{}-].
+	// Some tools like Bazel rules_k8s allow tag patterns with {} characters.
+	// More info: https://github.com/bazelbuild/rules_k8s/pull/423
+	pattern, _ := regexp.Compile("^" + t + "(@sha256)?(:[a-zA-Z0-9_.{}-]*)?$")
 	return pattern.MatchString(s)
 }
 

plugin/builtin/imagetagtransformer/ImageTagTransformer_test.go

@@ -388,3 +388,45 @@ spec:
       initContainers: null
 `)
 }
+
+func TestImageTagTransformerTagWithBraces(t *testing.T) {
+	th := kusttest_test.MakeEnhancedHarness(t).
+		PrepBuiltin("ImageTagTransformer")
+	defer th.Reset()
+
+	rm := th.LoadAndRunTransformer(`
+apiVersion: builtin
+kind: ImageTagTransformer
+metadata:
+  name: notImportantHere
+imageTag:
+  name: some.registry.io/my-image
+  newTag: "my-fixed-tag"
+`, `
+group: apps
+apiVersion: v1
+kind: Deployment
+metadata:
+  name: deploy1
+spec:
+  template:
+    spec:
+      containers:
+      - image: some.registry.io/my-image:{GENERATED_TAG}
+        name: my-image
+`)
+
+	th.AssertActualEqualsExpected(rm, `
+apiVersion: v1
+group: apps
+kind: Deployment
+metadata:
+  name: deploy1
+spec:
+  template:
+    spec:
+      containers:
+      - image: some.registry.io/my-image:my-fixed-tag
+        name: my-image
+`)
+}