Merge pull request #4537 from KnVerey/release-updates

Converge local and cloud gorelease scripts, improve release notes

.github/ISSUE_TEMPLATE/bug_report.md

@@ -8,7 +8,7 @@ assignees: ""
 ---
 
 <!--
-Please read this page: https://kubernetes-sigs.github.io/kustomize/contributing/bugs/ before
+Please read this page: https://kubectl.docs.kubernetes.io/contributing/kustomize/bugs/ before
 filing a bug
 -->
 

.gitignore

@@ -21,3 +21,12 @@
 *.DS_store
 
 .bin
+
+# Hugo site
+site/public/
+site/resources/
+site/.hugo_build.lock
+**/node_modules/
+
+# goreleaser artifacts
+**/dist/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "site/themes/docsy"]
+	path = site/themes/docsy
+	url = https://github.com/google/docsy.git

ARCHITECTURE.md

@@ -0,0 +1,299 @@
+# Architecture
+
+* _Updated: December 2021_
+
+This document describes the repository organization and the kustomize
+build process. It's meant to lower the barrier to learning and
+contributing to the code base.
+
+If not kept up to date, it will just be a historical snapshot.
+
+
+## Repository layout
+
+[human-edited docs]: https://github.com/kubernetes-sigs/cli-experimental/tree/master/site
+[generated docs]: https://github.com/kubernetes-sigs/cli-experimental/tree/master/docs
+[rendered docs]: https://kubectl.docs.kubernetes.io
+[openapi]: https://kubernetes.io/blog/2016/12/kubernetes-supports-openapi
+
+[`api` module]: https://github.com/kubernetes-sigs/kustomize/blob/master/api/go.mod
+[`api`]: #the-api-module
+[`cmd/config` module]: https://github.com/kubernetes-sigs/kustomize/blob/master/cmd/config/go.mod
+[`cmd/config`]: #the-cmdconfig-module
+[`kustomize` module]: https://github.com/kubernetes-sigs/kustomize/blob/master/kustomize/go.mod
+[`kustomize`]: #the-kustomize-module
+[`kyaml` module]: https://github.com/kubernetes-sigs/kustomize/blob/master/kyaml/go.mod
+[`kyaml`]: #the-kyaml-module
+[`kyaml/kio.Filter`]: https://github.com/Kubernetes-sigs/kustomize/blob/master/kyaml/kio/kio.go
+[`go-yaml`]: https://github.com/go-yaml/yaml/tree/v3
+
+
+[3922]: https://github.com/kubernetes-sigs/kustomize/issues/3922
+
+
+
+ |  directory  | purpose      |
+ | ---------:  | :---------- |
+ |       `api` | The [`api`] module, holding high level kustomize code, suitable for import by other programs.  |
+ |       `cmd` | Various Go programs aiding repo management. See also `hack`. As an outlier, includes the special [`cmd/config`] module. |
+ |      `docs` | Old home of documentation; contains pointers to new homes: [human-edited docs], [generated docs] and [rendered docs]. |
+ |  `examples` | Full kustomization examples that run as pre-merge tests.  |
+ | `functions` | Examples of plugins in KRM function form. TODO([3922]): Move under `plugin`. |
+ |      `hack` | Various shell scripts to help with code management. |
+ | `kustomize` | The [`kustomize`] module holds the `main.go` for kustomize. |
+ |     `kyaml` | The [`kyaml`] module, holding Kubernetes-specific YAML editing packages used by the [`api`] module. Wraps [`go-yaml`] v3.|
+ |    `plugin` | Examples of Kustomize plugins. |
+ | `releasing` | Instructions for releasing the various modules. |
+ |      `site` | Old generated documentation, kept to provide redirection links to the new docs. |
+
+
+## Modules
+
+[semantically versioned]: https://semver.org
+[Go modules]: https://github.com/golang/go/wiki/Modules
+
+The [Go modules] in the kustomize repository are [semantically versioned].
+
+
+### `kustomize`
+
+> _Depends on [`api`], [`cmd/config`], [`kyaml`]_
+
+The [`kustomize` module] contains the `main.go` for `kustomize`, buildable with
+
+```
+(cd kustomize; go install .)
+```
+
+[appears in kubectl]: https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/kubectl/pkg/cmd/kustomize/kustomize.go
+
+Below this are packages containing
+[cobra](http://github.com/spf13/cobra) commands implementing `build`,
+`edit`, `fix`, etc., packages linked together by `main.go`.
+
+These command packages are intentionally public, semantically
+versioned, and can be used in other programs.  Specifically, the
+`kustomize build` command [appears in kubectl] as `kubectl kustomize`.
+
+The code in the `build` package is dominated by flag validation,
+with minimal business logic.  The critical lines are something
+like
+
+```
+# Make a kustomizer.
+k := krusty.MakeKustomizer(
+  HonorKustomizeFlags(krusty.MakeDefaultOptions()),
+)
+
+# Run the kustomizer, sending location of kustomization.yaml
+m := k.Run(fSys, "/path/to/dir")
+
+# Write the result as YAML.
+writer.Write(m.AsYaml())
+```
+
+The `krusty` package is in the [`api`] module.
+
+### `api`
+
+> _Depends on [`kyaml`] and code generated from builtin plugin modules_
+
+The [`api` module] is used by CLI programs like `kustomize` and `kubectl`
+to read and honor `kustomization.yaml` files and all that implies.
+
+The main public packages in the [`api` module] are
+
+ | package   |             |
+ | --------: | :---------- |
+ | `filters` | Implementations of [`kyaml/kio.Filter`] used by kustomize to transform Kubernetes objects. |
+ |  `konfig` | Configuration methods and constants in the kustomize API. |
+ |  `krusty` | Primary API entry point.  Holds the kustomizer and hundreds of tests for it. |
+ |  `loader` | Loads kustomization files and the files they refer to, enforcing security rules. |
+ |  `resmap` | The primary internal data structure over which the kustomizer and filters work. |
+ |   `types` | The `Kustomization` object and ancillary structs. |
+
+### `cmd/config`
+
+> _Depends on [`kyaml`]_
+
+This module contains cobra commands and kyaml-based functionality to
+provide unix-like file manipulation commands to kustomize like `grep`
+and `tree`.  These commands may be included in any program that
+manipulates k8s YAML (e.g. kustomize).
+
+### `kyaml`
+
+> _Has no in-repo dependence_
+
+The [`kyaml` module] is a kubernetes-focussed enhancement of [go-yaml].
+
+The YAML manipulation performed by a kustomize is based on these libraries.
+
+These libraries evolve independently of kustomize, and other programs depend on them.
+
+The key public packages in the [`kyaml` module] include
+
+ | package   |             |
+ | --------: | :---------- |
+ | `errors` | Wrapper for the go-errors/errors lib |
+ | `filesys` | A kustomize-specific file system abstraction, to ease writing tests |
+ | `fn/framework` | An SDK for writing KRM Functions in Go |
+ | `fn/runtime` | Implements the runtime for KRM Function extensions |
+ | `kio` | Libraries for reading and writing collections of Kubernetes resources as RNodes |
+ | `openapi` | Loads and accesses openapi schemas for schema-aware resource manipultaion |
+ | `resid` | Representations to aid in unique identification of Kubernetes resources |
+ | `yaml` | A Kubernetes-focused wrapper of [go-yaml], notably including the RNode object |
+
+
+-------
+
+## How _kustomize build_ works
+
+The command `kustomize build` accepts a single string argument,
+which must resolve to a directory, possibly in a git repository,
+called the _kustomization root_.
+
+This directory must contain a file called `kustomization.yaml`, with
+YAML that marshals into a single instance of a `Kustomization` object.
+
+For the remainder of this document, the word _kustomization_ refers to
+either of these things.
+
+This kustomization is the access point to a directed, acyclic graph of
+Kubernetes objects, including other kustomizations, to include in a
+build.
+
+Execution of `build` starts and ends in the [`api`] module,
+frequently dipping into the [`kyaml`] module for lower level
+YAML manipulation.
+
+### The `build` flow
+
+  - Validate command lines arguments and flags.
+
+  - Make a `Kustomizer` as a function of those arguments.
+
+  - Call `Run` on the kustomizer, passing it the path to the
+    kustomization.
+
+    `Run` returns an instance of `ResMap`, the `api` package's
+    representation of a set of kubernetes `Resource` objects.
+
+    This structure offers resource lookup methods (map behavior),
+    but also retains the resources in the order they were
+    specified in kustomization files (list behavior).
+
+    Post-run, the objects are fully hydrated, per the
+    instructions in the kustomization.
+
+  - Marshal the objects as YAML to a file or `stdout`.
+
+
+### The `Run` function
+
+  - Create various objects
+
+    - A `ResMap` factory.
+
+      Makes  `ResMaps` from byte streams, other `ResMaps`, etc.
+
+    - A file `loader.Loader`.
+
+      It's fed an appropriate set of restrictions, and the path to the kustomization.
+
+    - A plugin loader.
+
+      It finds plugins (transformers, generators or validators)
+      and prepares them for running.
+
+    - A `KustTarget` encapsulating all of the above.
+
+      A KustTarget contains one `Kustomization` and represents
+	  everything that kustomization can reach.  This will include
+	  other `KustTarget` instances, each having a smaller purview than
+	  the one referencing it.
+
+  - Call `KustTarget.Load` to load its kustomization.
+
+    This step deals with deprecations and field changes.
+
+  - Load [openapi] data specified by the kustomization.
+
+    This is needed to recognize k8s kinds and their special
+    properties, e.g. which kinds are cluster-scoped, which kinds
+    refer to others, etc.
+
+  - Call `KustTarget.makeCustomizedResmap` to create the `ResMap` result.
+
+    This visits everything referenced by the kustomization,
+    performing all generation, transformation and validation.
+
+  - Finish the `Run` with
+
+    - Optional reordering of objects in `ResMap`, overriding the
+      FIFO rule.
+
+    - Optional addition of _kustomize build annotations_ to the
+      resources.  E.g. from which repo and file the resource was
+      read, the fact that kustomize touched the resource, etc.
+      These kustomize-specific annotations are intended for
+      server-side data analytics, file structure traceability and
+      reconstruction, etc.
+
+### The `makeCustomizedResmap` function
+
+  This function starts the process of object transformation,
+  as well as accumulation of recursively referenced data.
+
+  - Call `ra := KustTarget.AccumulateTarget`.
+
+    The result, `ra`, is a resource accumulator that contains
+    everything referred to by the current kustomization, now fully
+    hydrated.
+
+  - Uniquify names of generated objects by appending content hashes.
+
+    This cannot be done until the objects are complete.
+
+  - Fix all name references (given that names may have changed).
+
+    E.g. if a ConfigMaps was given a generated name, all objects that
+    refer to that ConfigMap must be given its name.
+
+  - Resolve vars, replacing them with whatever they refer to (a legacy feature).
+
+### The `AccumulateTarget` function
+
+  - Call `AccumulateResources` over the `resources` field (this can recurse).
+  - Call `AccumulateComponents` over the `components` field (this can recurse),
+  - Load legacy (pre-plugin) global kustomize configuration,
+  - Load legacy (pre-openapi) _Custom Resource Definition_ data.
+  - In the context of the data loaded above, run the kustomization's
+    - generators,
+    - transformers,
+    - and validators.
+  - Accumulate `vars` (make note of them for later replacement).
+
+### `AccumulateResources` and component accumulation
+
+  - If the path is a file:
+    - Accumulate the objects in the file (treating them
+      as opaque kubernetes objects).
+
+  - If the path is a directory:
+    - Create a new `KustTarget` referring to that directory's kustomization.
+	- Call `subRa := KustTarget.AccumulateTarget`.
+    - Call `ra.MergeAccumulator(subRa)`
+	This completes a recursion.
+
+  - If the path is a git URL:
+    - Clone the repository to a temporary directory.
+    - Process the path optionally specified in the URL
+      as a path in the clone.
+	- If no path specified, work from the repository root.
+
+
+That's as deep as this discussion will go.
+
+The deeper this document goes into the details, the faster
+it will get out of date.

Makefile

@@ -12,7 +12,7 @@ MYGOBIN = $(shell go env GOPATH)/bin
 endif
 export PATH := $(MYGOBIN):$(PATH)
 MODULES := '"cmd/config" "api/" "kustomize/" "kyaml/"'
-LATEST_V4_RELEASE=v4.4.0
+LATEST_V4_RELEASE=v4.5.3
 
 # Provide defaults for REPO_OWNER and REPO_NAME if not present.
 # Typically these values would be provided by Prow.
@@ -40,7 +40,6 @@ verify-kustomize: \
 prow-presubmit-check: \
 	install-tools \
 	lint-kustomize \
-	test-multi-module \
 	test-unit-kustomize-all \
 	test-unit-cmd-all \
 	test-go-mod \
@@ -83,11 +82,6 @@ $(MYGOBIN)/pluginator:
 	cd cmd/pluginator; \
 	go install .
 
-# Build from local source.
-$(MYGOBIN)/prchecker:
-	cd cmd/prchecker; \
-	go install .
-
 # Build from local source.
 $(MYGOBIN)/kustomize: build-kustomize-api
 	cd kustomize; \
@@ -102,7 +96,6 @@ install-tools: \
 	$(MYGOBIN)/k8scopy \
 	$(MYGOBIN)/mdrip \
 	$(MYGOBIN)/pluginator \
-	$(MYGOBIN)/prchecker \
 	$(MYGOBIN)/stringer
 
 ### Begin kustomize plugin rules.
@@ -127,7 +120,7 @@ install-tools: \
 #   module (it's linked into the api).
 
 # Where all generated builtin plugin code should go.
-pGen=api/builtins
+pGen=api/internal/builtins
 # Where the builtin Go plugin modules live.
 pSrc=plugin/builtin
 
@@ -143,7 +136,8 @@ _builtinplugins = \
 	PatchJson6902Transformer.go \
 	PatchStrategicMergeTransformer.go \
 	PatchTransformer.go \
-	PrefixSuffixTransformer.go \
+	PrefixTransformer.go \
+	SuffixTransformer.go \
 	ReplacementTransformer.go \
 	ReplicaCountTransformer.go \
 	SecretGenerator.go \
@@ -171,7 +165,8 @@ $(pGen)/NamespaceTransformer.go: $(pSrc)/namespacetransformer/NamespaceTransform
 $(pGen)/PatchJson6902Transformer.go: $(pSrc)/patchjson6902transformer/PatchJson6902Transformer.go
 $(pGen)/PatchStrategicMergeTransformer.go: $(pSrc)/patchstrategicmergetransformer/PatchStrategicMergeTransformer.go
 $(pGen)/PatchTransformer.go: $(pSrc)/patchtransformer/PatchTransformer.go
-$(pGen)/PrefixSuffixTransformer.go: $(pSrc)/prefixsuffixtransformer/PrefixSuffixTransformer.go
+$(pGen)/PrefixTransformer.go: $(pSrc)/prefixtransformer/PrefixTransformer.go
+$(pGen)/SuffixTransformer.go: $(pSrc)/suffixtransformer/SuffixTransformer.go
 $(pGen)/ReplacementTransformer.go: $(pSrc)/replacementtransformer/ReplacementTransformer.go
 $(pGen)/ReplicaCountTransformer.go: $(pSrc)/replicacounttransformer/ReplicaCountTransformer.go
 $(pGen)/SecretGenerator.go: $(pSrc)/secretgenerator/SecretGenerator.go
@@ -229,8 +224,8 @@ generate-kustomize-api: $(MYGOBIN)/k8scopy
 
 .PHONY: test-unit-kustomize-api
 test-unit-kustomize-api: build-kustomize-api
-	cd api; go test ./...  -ldflags "-X sigs.k8s.io/kustomize/api/provenance.version=v444.333.222"; \
-	cd krusty; OPENAPI_TEST=true go test -run TestCustomOpenAPIFieldFromComponentWithOverlays
+	cd api; go test ./...  -ldflags "-X sigs.k8s.io/kustomize/api/provenance.version=v444.333.222"
+	cd api/krusty; OPENAPI_TEST=true go test -run TestCustomOpenAPIFieldFromComponentWithOverlays
 
 .PHONY: test-unit-kustomize-plugins
 test-unit-kustomize-plugins:
@@ -252,19 +247,6 @@ test-unit-cmd-all:
 test-go-mod:
 	./hack/check-go-mod.sh
 
-# Environment variables are defined at
-# https://github.com/kubernetes/test-infra/blob/master/prow/jobs.md#job-environment-variables
-.PHONY: test-multi-module
-test-multi-module: $(MYGOBIN)/prchecker
-	( \
-		export MYGOBIN=$(MYGOBIN); \
-		export REPO_OWNER=$(REPO_OWNER); \
-		export REPO_NAME=$(REPO_NAME); \
-		export PULL_NUMBER=$(PULL_NUMBER); \
-		export MODULES=$(MODULES); \
-		./hack/check-multi-module.sh; \
-	)
-
 .PHONY:
 test-examples-e2e-kustomize: $(MYGOBIN)/mdrip $(MYGOBIN)/kind
 	( \
@@ -358,7 +340,6 @@ clean: clean-kustomize-external-go-plugin
 	rm -f $(MYGOBIN)/golangci-lint-kustomize
 	rm -f $(MYGOBIN)/kustomize
 	rm -f $(MYGOBIN)/mdrip
-	rm -f $(MYGOBIN)/prchecker
 	rm -f $(MYGOBIN)/stringer
 
 # Handle pluginator manually.

OWNERS_ALIASES

@@ -3,18 +3,14 @@
 aliases:
   kustomize-owners:
     - knverey
-    - monopole
-    - pwittrock
-  kustomize-approvers:
-    - justinsb
-    - knverey
-    - monopole
     - natasha41575
-    - pwittrock
+  kustomize-approvers:
+    - knverey
+    - natasha41575
   kustomize-reviewers:
     - knverey
-    - monopole
     - natasha41575
+    - yuwenma
 
   kyaml-approvers:
     - mengqiy
@@ -28,3 +24,6 @@ aliases:
   emeritus-approvers:
     - liujingfang1
     - Shell32-Natsu
+    - justinsb
+    - monopole
+    - pwittrock

README.md

@@ -11,8 +11,8 @@ and it's like [`sed`], in that it emits edited text.
 
 This tool is sponsored by [sig-cli] ([KEP]).
 
- - [Installation instructions](https://kubernetes-sigs.github.io/kustomize/installation)
- - [General documentation](https://kubernetes-sigs.github.io/kustomize)
+ - [Installation instructions](https://kubectl.docs.kubernetes.io/installation/kustomize/)
+ - [General documentation](https://kubectl.docs.kubernetes.io/references/kustomize/)
  - [Examples](examples)
 
 [![Build Status](https://prow.k8s.io/badge.svg?jobs=kustomize-presubmit-master)](https://prow.k8s.io/job-history/kubernetes-jenkins/pr-logs/directory/kustomize-presubmit-master)
@@ -34,13 +34,13 @@ will be reflected in the Kubernetes release notes.
 | v1.21 | v4.0.5 |
 | v1.22 | v4.2.0 |
 
-[v2.0.3]: /../../tree/v2.0.3
+[v2.0.3]: https://github.com/kubernetes-sigs/kustomize/releases/tag/v2.0.3
 [#2506]: https://github.com/kubernetes-sigs/kustomize/issues/2506
 [#1500]: https://github.com/kubernetes-sigs/kustomize/issues/1500
 [kust-in-kubectl update]: https://github.com/kubernetes/kubernetes/blob/4d75a6238a6e330337526e0513e67d02b1940b63/CHANGELOG/CHANGELOG-1.21.md#kustomize-updates-in-kubectl
 
 For examples and guides for using the kubectl integration please
-see the [kubectl book] or the [kubernetes documentation].
+see the [kubernetes documentation].
 
 ## Usage
 
@@ -141,8 +141,9 @@ The YAML can be directly [applied] to a cluster:
 
 ## Community
 
-- [file a bug](https://kubernetes-sigs.github.io/kustomize/contributing/bugs/) instructions
-- [contribute a feature](https://kubernetes-sigs.github.io/kustomize/contributing/features/) instructions
+- [file a bug](https://kubectl.docs.kubernetes.io/contributing/kustomize/bugs/)
+- [contribute a feature](https://kubectl.docs.kubernetes.io/contributing/kustomize/features/)
+- [propose a larger enhancement](https://github.com/kubernetes-sigs/kustomize/tree/master/proposals)
 
 ### Code of conduct
 
@@ -151,27 +152,22 @@ is governed by the [Kubernetes Code of Conduct].
 
 [`make`]: https://www.gnu.org/software/make
 [`sed`]: https://www.gnu.org/software/sed
-[DAM]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#declarative-application-management
+[DAM]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#declarative-application-management
 [KEP]: https://github.com/kubernetes/enhancements/blob/master/keps/sig-cli/2377-Kustomize/README.md
 [Kubernetes Code of Conduct]: code-of-conduct.md
-[applied]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#apply
-[base]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#base
-[declarative configuration]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#declarative-application-management
-[imageBase]: docs/images/base.jpg
-[imageOverlay]: docs/images/overlay.jpg
+[applied]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#apply
+[base]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#base
+[declarative configuration]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#declarative-application-management
+[imageBase]: images/base.jpg
+[imageOverlay]: images/overlay.jpg
 [kubectl announcement]: https://kubernetes.io/blog/2019/03/25/kubernetes-1-14-release-announcement
-[kubectl book]: https://kubectl.docs.kubernetes.io/guides/introduction/kustomize/
 [kubernetes documentation]: https://kubernetes.io/docs/tasks/manage-kubernetes-objects/kustomization/
-[kubernetes style]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#kubernetes-style-object
-[kustomization]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#kustomization
-[overlay]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#overlay
-[overlays]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#overlay
+[kubernetes style]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#kubernetes-style-object
+[kustomization]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#kustomization
+[overlay]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#overlay
+[overlays]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#overlay
 [release page]: https://github.com/kubernetes-sigs/kustomize/releases
-[resource]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#resource
-[resources]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#resource
+[resource]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#resource
+[resources]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#resource
 [sig-cli]: https://github.com/kubernetes/community/blob/master/sig-cli/README.md
-[variant]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#variant
-[variants]: https://kubernetes-sigs.github.io/kustomize/api-reference/glossary#variant
-[v2.0.3]: https://github.com/kubernetes-sigs/kustomize/releases/tag/v2.0.3
-[v2.1.0]: https://github.com/kubernetes-sigs/kustomize/releases/tag/v2.1.0
-[workflows]: https://kubernetes-sigs.github.io/kustomize/guides
+[variants]: https://kubectl.docs.kubernetes.io/references/kustomize/glossary/#variant

ROADMAP.md

@@ -0,0 +1,112 @@
+# Kustomize roadmap 2022
+
+Presented at the [January 26, 2022, SIG-CLI meeting](https://youtu.be/l2plzJ9MRlk?t=1321)
+
+kustomize maintainers: @knverey, @natasha41575
+
+[Objective: Improve contributor community](#objective-improve-contributor-community)
+
+[Objective: Improve end-user experience](#objective-improve-end-user-experience)
+
+[Objective: Improve extension experience](#objective-improve-extension-experience)
+
+## Objective: Improve contributor community
+
+**_WHO: End user who also contributes source code._**
+
+Top priority:
+
+- Kustomization v1 (also end-user impact) ([PROJECT](https://github.com/kubernetes-sigs/kustomize/projects/12))
+  - Remove the following fields:
+    - [vars](https://github.com/kubernetes-sigs/kustomize/issues/2052)
+    - [patchesJson6902, patchesStrategicMerge (consolidate on \`patches)](https://github.com/kubernetes-sigs/kustomize/issues/4376)
+    - [helmChartInflationGenerator, helmCharts, helmGlobals](https://github.com/kubernetes-sigs/kustomize/issues/4401)
+    - all long-deprecated fields in Kustomization v1 such as \`bases\` and those being accommodate by kustomize edit \[[see code snippet](https://github.com/kubernetes-sigs/kustomize/blob/ee4b7847f0beb6c0d2070673b10f23f7b3e92e82/api/types/fix.go#L15)\]
+  - Ensure that \`kustomize edit fix\` handles migrations for all those, and that anything it changes is not still present in v1.
+  - [Add reorder field](https://github.com/kubernetes-sigs/kustomize/issues/3913). Default should be FIFO and legacy should also be supported (could add alphabetic and custom sort support eventually). Replaces -reorder flag.
+  - [Reconcile openapi and crds field](https://github.com/kubernetes-sigs/kustomize/issues/3944)
+  - [Consider deprecating configurations field](https://github.com/kubernetes-sigs/kustomize/issues/3945) (old, pre-plugin, pre-openapi global configuration)
+  - [Add a field to enable the managedby label](https://github.com/kubernetes-sigs/kustomize/issues/4047)
+
+Second priority:
+
+- Improve contributor documentation
+  - [Instructions to upgrade kustomize-in-kubectl](https://github.com/kubernetes-sigs/kustomize/issues/3951)
+
+Also very valuable to the project:
+
+- [Improve the release process](https://github.com/kubernetes-sigs/kustomize/issues/3952) to support regular biweekly releases [PROJECT](https://github.com/kubernetes-sigs/kustomize/projects/7)
+- Release sigs.k8s.io/kustomize/api v1.0.0 [PROJECT](https://github.com/kubernetes-sigs/kustomize/projects/5)
+  - [Reduce the public surface of the API module](https://github.com/kubernetes-sigs/kustomize/issues/3942)
+  - [Vendor all transitive deps](https://github.com/kubernetes-sigs/kustomize/issues/3706). Since kustomize is in kubectl, we must do as kubectl does to manage deps, exposing new transitive deps in code review.
+- Project administration
+  - [Rename master branch to main](https://github.com/kubernetes-sigs/kustomize/issues/3954)
+
+
+
+## Objective: Improve end-user experience
+
+**_WHO: End user that wants kustomize build artifacts (binaries, containers)._**
+
+Top priorities:
+
+- Bug fixes:
+  - Fix bugs in basic anchor support: [issue query](https://github.com/kubernetes-sigs/kustomize/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fanchors)
+  - integer keys support: [#3446](https://github.com/kubernetes-sigs/kustomize/issues/3446)
+  - kyaml not respecting \`$patch replace|retainKeys\`: [#2037](https://github.com/kubernetes-sigs/kustomize/issues/2037)
+  - kustomize removing quotes from namespace field values: [#4146](https://github.com/kubernetes-sigs/kustomize/issues/4146)
+  - Kustomize doesn’t support metadata.generateName: [#641](https://github.com/kubernetes-sigs/kustomize/issues/641)
+- Send kustomize CLI version number into kubectl ([kubectl issue](https://github.com/kubernetes/kubectl/issues/797) / [kustomize issue](https://github.com/kubernetes-sigs/kustomize/issues/1424))
+- Kustomize performance investigations/improvements [PROJECT](https://github.com/kubernetes-sigs/kustomize/projects/13)
+- [Support generic resource references in name reference tracking](https://github.com/kubernetes-sigs/kustomize/issues/3418)
+- [KEP 4267: retain the resource origin and transformer data in annotations](https://github.com/kubernetes-sigs/kustomize/pull/4267)
+
+Secondary priorities:
+
+- kustomize cli v5 ([PROJECT](https://github.com/kubernetes-sigs/kustomize/projects/14))
+  - [Drop the --reorder flag](https://github.com/kubernetes-sigs/kustomize/issues/3947)
+  - [Graduate cfg read-only commands out of alpha](https://github.com/kubernetes-sigs/kustomize/issues/4090).
+  - [Drop the –enable-managedby-label](https://github.com/kubernetes-sigs/kustomize/issues/4047)
+  - Drop old plugin-related fields in favor of [the Catalog-style fields](https://github.com/kubernetes/enhancements/tree/master/keps/sig-cli/2906-kustomize-function-catalog).
+  - [Drop the helm flags](https://github.com/kubernetes-sigs/kustomize/issues/4401)
+- [Confusion around namespace replacement](https://github.com/kubernetes-sigs/kustomize/issues/880).
+
+Also very valuable to the project:
+
+- [Overinclusion of root directory error in error messages](https://github.com/kubernetes-sigs/kustomize/issues/4348)
+- [Add kustomize localize command](https://github.com/kubernetes-sigs/kustomize/issues/3980)
+- [Fix Windows support in test suite](https://github.com/kubernetes-sigs/kustomize/issues/4001)
+- Improve end-user documentation [PROJECT](https://github.com/kubernetes-sigs/kustomize/projects/9)
+
+
+## Objective: Improve extension experience
+
+**_WHO: Plugin developers: end users who extend kustomize, but don’t think about internals._**
+
+This objective is described in detail in the [Kustomize Plugin Graduation KEP](https://github.com/kubernetes/enhancements/tree/master/keps/sig-cli/2953-kustomize-plugin-graduation) / [PROJECT](https://github.com/kubernetes-sigs/kustomize/projects/15) .
+
+Top priorities:
+
+- Fix core usability issues with KRM Function extensions:
+  - [Better errors for function config failures](https://github.com/kubernetes-sigs/kustomize/issues/4398)
+  - [Container KRM Mounts are not mounting via function parameters](https://github.com/kubernetes-sigs/kustomize/issues/4290)
+  - [Resolution of local file references in extensions transformer configuration](https://github.com/kubernetes-sigs/kustomize/issues/4154)
+  - [Do not silently ignore plugins when config has typo](https://github.com/kubernetes-sigs/kustomize/issues/4399)
+  - [KRM Exec Function can't locate executable when referencing a base](https://github.com/kubernetes-sigs/kustomize/issues/4347)
+- Once core usability issues are fixed, [deprecate legacy exec and Go plugin support](https://github.com/kubernetes/enhancements/tree/master/keps/sig-cli/2953-kustomize-plugin-graduation)
+- [Catalog KEP](https://github.com/kubernetes/enhancements/tree/master/keps/sig-cli/2906-kustomize-function-catalog)
+
+Secondary priorities:
+
+- [Remove Starlark support](https://github.com/kubernetes-sigs/kustomize/issues/4349)
+- [Composition KEP](https://github.com/kubernetes/enhancements/pull/2300). The implementation is complete in [#4223](https://github.com/kubernetes-sigs/kustomize/pull/4323), but depends on:
+  - [Convert resources and components to be backed by a reusable generator](https://github.com/kubernetes-sigs/kustomize/issues/4402)
+  - [Enable explicitly invoked transformers to use default fieldSpecs](https://github.com/kubernetes-sigs/kustomize/issues/4404)
+  - [Enable built-in generators to be used in the transformers field ](https://github.com/kubernetes-sigs/kustomize/issues/4403)
+
+
+Also very valuable to the project:
+
+- [Improve docs for kyaml libraries](https://github.com/kubernetes-sigs/kustomize/issues/3950), especially by adding examples.
+- [Create a reserved field for plugin runtime information](https://github.com/kubernetes-sigs/kustomize/issues/4405)
+- [Develop new standard process for implementing builtin transformers](https://github.com/kubernetes-sigs/kustomize/issues/4400)

api/builtins/PrefixSuffixTransformer.go

@@ -1,103 +0,0 @@
-// Code generated by pluginator on PrefixSuffixTransformer; DO NOT EDIT.
-// pluginator {unknown  1970-01-01T00:00:00Z  }
-
-package builtins
-
-import (
-	"errors"
-
-	"sigs.k8s.io/kustomize/api/filters/prefixsuffix"
-	"sigs.k8s.io/kustomize/api/resmap"
-	"sigs.k8s.io/kustomize/api/types"
-	"sigs.k8s.io/kustomize/kyaml/resid"
-	"sigs.k8s.io/yaml"
-)
-
-// Add the given prefix and suffix to the field.
-type PrefixSuffixTransformerPlugin struct {
-	Prefix     string        `json:"prefix,omitempty" yaml:"prefix,omitempty"`
-	Suffix     string        `json:"suffix,omitempty" yaml:"suffix,omitempty"`
-	FieldSpecs types.FsSlice `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
-}
-
-// A Gvk skip list for prefix/suffix modification.
-// hard coded for now - eventually should be part of config.
-var prefixSuffixFieldSpecsToSkip = types.FsSlice{
-	{Gvk: resid.Gvk{Kind: "CustomResourceDefinition"}},
-	{Gvk: resid.Gvk{Group: "apiregistration.k8s.io", Kind: "APIService"}},
-	{Gvk: resid.Gvk{Kind: "Namespace"}},
-}
-
-func (p *PrefixSuffixTransformerPlugin) Config(
-	_ *resmap.PluginHelpers, c []byte) (err error) {
-	p.Prefix = ""
-	p.Suffix = ""
-	p.FieldSpecs = nil
-	err = yaml.Unmarshal(c, p)
-	if err != nil {
-		return
-	}
-	if p.FieldSpecs == nil {
-		return errors.New("fieldSpecs is not expected to be nil")
-	}
-	return
-}
-
-func (p *PrefixSuffixTransformerPlugin) Transform(m resmap.ResMap) error {
-	// Even if both the Prefix and Suffix are empty we want
-	// to proceed with the transformation. This allows to add contextual
-	// information to the resources (AddNamePrefix and AddNameSuffix).
-	for _, r := range m.Resources() {
-		// TODO: move this test into the filter (i.e. make a better filter)
-		if p.shouldSkip(r.OrgId()) {
-			continue
-		}
-		id := r.OrgId()
-		// current default configuration contains
-		// only one entry: "metadata/name" with no GVK
-		for _, fs := range p.FieldSpecs {
-			// TODO: this is redundant to filter (but needed for now)
-			if !id.IsSelected(&fs.Gvk) {
-				continue
-			}
-			// TODO: move this test into the filter.
-			if smellsLikeANameChange(&fs) {
-				// "metadata/name" is the only field.
-				// this will add a prefix and a suffix
-				// to the resource even if those are
-				// empty
-
-				r.AddNamePrefix(p.Prefix)
-				r.AddNameSuffix(p.Suffix)
-				if p.Prefix != "" || p.Suffix != "" {
-					r.StorePreviousId()
-				}
-			}
-			if err := r.ApplyFilter(prefixsuffix.Filter{
-				Prefix:    p.Prefix,
-				Suffix:    p.Suffix,
-				FieldSpec: fs,
-			}); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func smellsLikeANameChange(fs *types.FieldSpec) bool {
-	return fs.Path == "metadata/name"
-}
-
-func (p *PrefixSuffixTransformerPlugin) shouldSkip(id resid.ResId) bool {
-	for _, path := range prefixSuffixFieldSpecsToSkip {
-		if id.IsSelected(&path.Gvk) {
-			return true
-		}
-	}
-	return false
-}
-
-func NewPrefixSuffixTransformerPlugin() resmap.TransformerPlugin {
-	return &PrefixSuffixTransformerPlugin{}
-}

api/builtins/ReplacementTransformer.go

@@ -1,59 +0,0 @@
-// Code generated by pluginator on ReplacementTransformer; DO NOT EDIT.
-// pluginator {unknown  1970-01-01T00:00:00Z  }
-
-package builtins
-
-import (
-	"fmt"
-
-	"sigs.k8s.io/kustomize/api/filters/replacement"
-	"sigs.k8s.io/kustomize/api/resmap"
-	"sigs.k8s.io/kustomize/api/types"
-	"sigs.k8s.io/yaml"
-)
-
-// Replace values in targets with values from a source
-type ReplacementTransformerPlugin struct {
-	ReplacementList []types.ReplacementField `json:"replacements,omitempty" yaml:"replacements,omitempty"`
-	Replacements    []types.Replacement      `json:"omitempty" yaml:"omitempty"`
-}
-
-func (p *ReplacementTransformerPlugin) Config(
-	h *resmap.PluginHelpers, c []byte) (err error) {
-	p.ReplacementList = []types.ReplacementField{}
-	if err := yaml.Unmarshal(c, p); err != nil {
-		return err
-	}
-
-	for _, r := range p.ReplacementList {
-		if r.Path != "" && (r.Source != nil || len(r.Targets) != 0) {
-			return fmt.Errorf("cannot specify both path and inline replacement")
-		}
-		if r.Path != "" {
-			// load the replacement from the path
-			content, err := h.Loader().Load(r.Path)
-			if err != nil {
-				return err
-			}
-			repl := types.Replacement{}
-			if err := yaml.Unmarshal(content, &repl); err != nil {
-				return err
-			}
-			p.Replacements = append(p.Replacements, repl)
-		} else {
-			// replacement information is already loaded
-			p.Replacements = append(p.Replacements, r.Replacement)
-		}
-	}
-	return nil
-}
-
-func (p *ReplacementTransformerPlugin) Transform(m resmap.ResMap) (err error) {
-	return m.ApplyFilter(replacement.Filter{
-		Replacements: p.Replacements,
-	})
-}
-
-func NewReplacementTransformerPlugin() resmap.TransformerPlugin {
-	return &ReplacementTransformerPlugin{}
-}

api/builtins/builtins.go

@@ -0,0 +1,51 @@
+// Copyright 2021 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Deprecated: Package api/builtins will not be available in API v1.
+package builtins
+
+import (
+	internal "sigs.k8s.io/kustomize/api/internal/builtins"
+)
+
+type (
+	AnnotationsTransformerPlugin         = internal.AnnotationsTransformerPlugin
+	ConfigMapGeneratorPlugin             = internal.ConfigMapGeneratorPlugin
+	HashTransformerPlugin                = internal.HashTransformerPlugin
+	HelmChartInflationGeneratorPlugin    = internal.HelmChartInflationGeneratorPlugin
+	IAMPolicyGeneratorPlugin             = internal.IAMPolicyGeneratorPlugin
+	ImageTagTransformerPlugin            = internal.ImageTagTransformerPlugin
+	LabelTransformerPlugin               = internal.LabelTransformerPlugin
+	LegacyOrderTransformerPlugin         = internal.LegacyOrderTransformerPlugin
+	NamespaceTransformerPlugin           = internal.NamespaceTransformerPlugin
+	PatchJson6902TransformerPlugin       = internal.PatchJson6902TransformerPlugin
+	PatchStrategicMergeTransformerPlugin = internal.PatchStrategicMergeTransformerPlugin
+	PatchTransformerPlugin               = internal.PatchTransformerPlugin
+	PrefixTransformerPlugin              = internal.PrefixTransformerPlugin
+	SuffixTransformerPlugin              = internal.SuffixTransformerPlugin
+	ReplacementTransformerPlugin         = internal.ReplacementTransformerPlugin
+	ReplicaCountTransformerPlugin        = internal.ReplicaCountTransformerPlugin
+	SecretGeneratorPlugin                = internal.SecretGeneratorPlugin
+	ValueAddTransformerPlugin            = internal.ValueAddTransformerPlugin
+)
+
+var (
+	NewAnnotationsTransformerPlugin         = internal.NewAnnotationsTransformerPlugin
+	NewConfigMapGeneratorPlugin             = internal.NewConfigMapGeneratorPlugin
+	NewHashTransformerPlugin                = internal.NewHashTransformerPlugin
+	NewHelmChartInflationGeneratorPlugin    = internal.NewHelmChartInflationGeneratorPlugin
+	NewIAMPolicyGeneratorPlugin             = internal.NewIAMPolicyGeneratorPlugin
+	NewImageTagTransformerPlugin            = internal.NewImageTagTransformerPlugin
+	NewLabelTransformerPlugin               = internal.NewLabelTransformerPlugin
+	NewLegacyOrderTransformerPlugin         = internal.NewLegacyOrderTransformerPlugin
+	NewNamespaceTransformerPlugin           = internal.NewNamespaceTransformerPlugin
+	NewPatchJson6902TransformerPlugin       = internal.NewPatchJson6902TransformerPlugin
+	NewPatchStrategicMergeTransformerPlugin = internal.NewPatchStrategicMergeTransformerPlugin
+	NewPatchTransformerPlugin               = internal.NewPatchTransformerPlugin
+	NewPrefixTransformerPlugin              = internal.NewPrefixTransformerPlugin
+	NewSuffixTransformerPlugin              = internal.NewSuffixTransformerPlugin
+	NewReplacementTransformerPlugin         = internal.NewReplacementTransformerPlugin
+	NewReplicaCountTransformerPlugin        = internal.NewReplicaCountTransformerPlugin
+	NewSecretGeneratorPlugin                = internal.NewSecretGeneratorPlugin
+	NewValueAddTransformerPlugin            = internal.NewValueAddTransformerPlugin
+)

api/filters/annotations/annotations.go

@@ -19,9 +19,17 @@ type Filter struct {
 
 	// FsSlice contains the FieldSpecs to locate the namespace field
 	FsSlice types.FsSlice
+
+	trackableSetter filtersutil.TrackableSetter
 }
 
 var _ kio.Filter = Filter{}
+var _ kio.TrackableFilter = &Filter{}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (f *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	f.trackableSetter.WithMutationTracker(callback)
+}
 
 func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
 	keys := yaml.SortedMapKeys(f.Annotations)
@@ -30,7 +38,7 @@ func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
 			for _, k := range keys {
 				if err := node.PipeE(fsslice.Filter{
 					FsSlice: f.FsSlice,
-					SetValue: filtersutil.SetEntry(
+					SetValue: f.trackableSetter.SetEntry(
 						k, f.Annotations[k], yaml.NodeTagString),
 					CreateKind: yaml.MappingNode, // Annotations are MappingNodes.
 					CreateTag:  yaml.NodeTagMap,

api/filters/annotations/annotations_test.go

@@ -11,16 +11,20 @@ import (
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinconfig"
 	filtertest_test "sigs.k8s.io/kustomize/api/testutils/filtertest"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 var annosFs = builtinconfig.MakeDefaultConfig().CommonAnnotations
 
 func TestAnnotations_Filter(t *testing.T) {
+	mutationTrackStub := filtertest_test.MutationTrackerStub{}
 	testCases := map[string]struct {
-		input          string
-		expectedOutput string
-		filter         Filter
-		fsslice        types.FsSlice
+		input                string
+		expectedOutput       string
+		filter               Filter
+		fsslice              types.FsSlice
+		setEntryCallback     func(key, value, tag string, node *yaml.RNode)
+		expectedSetEntryArgs []filtertest_test.SetValueArg
 	}{
 		"add": {
 			input: `
@@ -210,17 +214,86 @@ metadata:
 				"b": "b1",
 			}},
 		},
+
+		// test usage of SetEntryCallback
+		"set_entry_callback": {
+			input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+`,
+			expectedOutput: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+  annotations:
+    a: a1
+    b: b1
+spec:
+  template:
+    metadata:
+      annotations:
+        a: a1
+        b: b1
+`,
+			filter: Filter{
+				Annotations: annoMap{
+					"a": "a1",
+					"b": "b1",
+				},
+			},
+			setEntryCallback: mutationTrackStub.MutationTracker,
+			fsslice: []types.FieldSpec{
+				{
+					Path:               "spec/template/metadata/annotations",
+					CreateIfNotPresent: true,
+				},
+			},
+			expectedSetEntryArgs: []filtertest_test.SetValueArg{
+				{
+					Key:      "a",
+					Value:    "a1",
+					Tag:      "!!str",
+					NodePath: []string{"metadata", "annotations"},
+				},
+				{
+					Key:      "a",
+					Value:    "a1",
+					Tag:      "!!str",
+					NodePath: []string{"spec", "template", "metadata", "annotations"},
+				},
+				{
+					Key:      "b",
+					Value:    "b1",
+					Tag:      "!!str",
+					NodePath: []string{"metadata", "annotations"},
+				},
+				{
+					Key:      "b",
+					Value:    "b1",
+					Tag:      "!!str",
+					NodePath: []string{"spec", "template", "metadata", "annotations"},
+				},
+			},
+		},
 	}
 
 	for tn, tc := range testCases {
+		mutationTrackStub.Reset()
 		t.Run(tn, func(t *testing.T) {
 			filter := tc.filter
+			filter.WithMutationTracker(tc.setEntryCallback)
 			filter.FsSlice = append(annosFs, tc.fsslice...)
 			if !assert.Equal(t,
 				strings.TrimSpace(tc.expectedOutput),
 				strings.TrimSpace(filtertest_test.RunFilter(t, tc.input, filter))) {
 				t.FailNow()
 			}
+			if !assert.Equal(t, tc.expectedSetEntryArgs, mutationTrackStub.SetValueArgs()) {
+				t.FailNow()
+			}
 		})
 	}
 }

api/filters/fieldspec/fieldspec.go

@@ -51,9 +51,8 @@ func (fltr Filter) Filter(obj *yaml.RNode) (*yaml.RNode, error) {
 	}
 	fltr.path = utils.PathSplitter(fltr.FieldSpec.Path, "/")
 	if err := fltr.filter(obj); err != nil {
-		s, _ := obj.String()
 		return nil, errors.WrapPrefixf(err,
-			"considering field '%s' of object\n%v", fltr.FieldSpec.Path, s)
+			"considering field '%s' of object %s", fltr.FieldSpec.Path, resid.FromRNode(obj))
 	}
 	return obj, nil
 }
@@ -138,6 +137,8 @@ func (fltr Filter) handleMap(obj *yaml.RNode) error {
 // seq calls filter on all sequence elements
 func (fltr Filter) handleSequence(obj *yaml.RNode) error {
 	if err := obj.VisitElements(func(node *yaml.RNode) error {
+		// set an accurate FieldPath for nested elements
+		node.AppendToFieldPath(obj.FieldPath()...)
 		// recurse on each element -- re-allocating a Filter is
 		// not strictly required, but is more consistent with field
 		// and less likely to have side effects

api/filters/fieldspec/fieldspec_test.go

@@ -59,11 +59,7 @@ apiVersion: foo
 kind: Bar
 xxx:
 `,
-			error: `considering field '' of object
-apiVersion: foo/v1
-kind: Bar
-xxx:
-: cannot set or create an empty field name`,
+			error: `considering field '' of object Bar.v1.foo/[noName].[noNs]: cannot set or create an empty field name`,
 			filter: fieldspec.Filter{
 				SetValue: filtersutil.SetScalar("e"),
 			},
@@ -216,11 +212,7 @@ kind: Bar
 a:
   b: a
 `,
-			error: `considering field 'a/b/c' of object
-kind: Bar
-a:
-  b: a
-: expected sequence or mapping node`,
+			error: `considering field 'a/b/c' of object Bar.[noVer].[noGrp]/[noName].[noNs]: expected sequence or mapping node`,
 			filter: fieldspec.Filter{
 				SetValue: filtersutil.SetScalar("e"),
 			},
@@ -566,3 +558,85 @@ a:
 		})
 	}
 }
+
+func TestFilter_FieldPaths(t *testing.T) {
+	testCases := map[string]struct {
+		input     string
+		fieldSpec string
+		expected  []string
+	}{
+		"fieldpath containing SequenceNode": {
+			input: `
+apiVersion: v1
+kind: Pod
+metadata:
+  name: app
+spec:
+  containers:
+  - name: store
+    image: redis:6.2.6
+  - name: server
+    image: nginx:latest
+`,
+			fieldSpec: `
+path: spec/containers[]/image
+kind: Pod
+`,
+			expected: []string{
+				"spec.containers.image",
+				"spec.containers.image",
+			},
+		},
+		"fieldpath with MappingNode": {
+			input: `
+apiVersion: v1
+kind: Pod
+metadata:
+  name: app
+spec:
+  containers:
+  - name: store
+    image: redis:6.2.6
+  - name: server
+    image: nginx:latest
+`,
+			fieldSpec: `
+path: metadata/name
+kind: Pod
+`,
+			expected: []string{
+				"metadata.name",
+			},
+		},
+	}
+	for name, tc := range testCases {
+		var fieldPaths []string
+		trackableSetter := filtersutil.TrackableSetter{}
+		trackableSetter.WithMutationTracker(func(key, value, tag string, node *yaml.RNode) {
+			fieldPaths = append(fieldPaths, strings.Join(node.FieldPath(), "."))
+		})
+		filter := fieldspec.Filter{
+			SetValue: trackableSetter.SetScalar("foo"),
+		}
+
+		t.Run(name, func(t *testing.T) {
+			err := yaml.Unmarshal([]byte(tc.fieldSpec), &filter.FieldSpec)
+			assert.NoError(t, err)
+			rw := &kio.ByteReadWriter{
+				Reader:                bytes.NewBufferString(tc.input),
+				Writer:                &bytes.Buffer{},
+				OmitReaderAnnotations: true,
+			}
+
+			// run the filter
+			err = kio.Pipeline{
+				Inputs:  []kio.Reader{rw},
+				Filters: []kio.Filter{kio.FilterAll(filter)},
+				Outputs: []kio.Writer{rw},
+			}.Execute()
+
+			assert.NoError(t, err)
+			assert.Equal(t, tc.expected, fieldPaths)
+		})
+	}
+}

api/filters/filtersutil/setters.go

@@ -21,9 +21,6 @@ func SetEntry(key, value, tag string) SetFn {
 		Value: value,
 		Tag:   tag,
 	}
-	if tag == yaml.NodeTagString && yaml.IsYaml1_1NonString(n) {
-		n.Style = yaml.DoubleQuotedStyle
-	}
 	return func(node *yaml.RNode) error {
 		return node.PipeE(yaml.FieldSetter{
 			Name:  key,
@@ -31,3 +28,39 @@ func SetEntry(key, value, tag string) SetFn {
 		})
 	}
 }
+
+type TrackableSetter struct {
+	// SetValueCallback will be invoked each time a field is set
+	setValueCallback func(key, value, tag string, node *yaml.RNode)
+}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (s *TrackableSetter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	s.setValueCallback = callback
+}
+
+// SetScalar returns a SetFn to set a scalar value
+// if a mutation tracker has been registered, the tracker will be invoked each
+// time a scalar is set
+func (s TrackableSetter) SetScalar(value string) SetFn {
+	origSetScalar := SetScalar(value)
+	return func(node *yaml.RNode) error {
+		if s.setValueCallback != nil {
+			s.setValueCallback("", value, "", node)
+		}
+		return origSetScalar(node)
+	}
+}
+
+// SetEntry returns a SetFn to set an entry in a map
+// if a mutation tracker has been registered, the tracker will be invoked each
+// time an entry is set
+func (s TrackableSetter) SetEntry(key, value, tag string) SetFn {
+	origSetEntry := SetEntry(key, value, tag)
+	return func(node *yaml.RNode) error {
+		if s.setValueCallback != nil {
+			s.setValueCallback(key, value, tag, node)
+		}
+		return origSetEntry(node)
+	}
+}

api/filters/imagetag/imagetag.go

@@ -23,9 +23,17 @@ type Filter struct {
 	// FsSlice contains the FieldSpecs to locate an image field,
 	// e.g. Path: "spec/myContainers[]/image"
 	FsSlice types.FsSlice `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
+
+	trackableSetter filtersutil.TrackableSetter
 }
 
 var _ kio.Filter = Filter{}
+var _ kio.TrackableFilter = &Filter{}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (f *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	f.trackableSetter.WithMutationTracker(callback)
+}
 
 func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
 	_, err := kio.FilterAll(yaml.FilterFunc(f.filter)).Filter(nodes)
@@ -40,8 +48,11 @@ func (f Filter) filter(node *yaml.RNode) (*yaml.RNode, error) {
 		return node, nil
 	}
 	if err := node.PipeE(fsslice.Filter{
-		FsSlice:  f.FsSlice,
-		SetValue: updateImageTagFn(f.ImageTag),
+		FsSlice: f.FsSlice,
+		SetValue: imageTagUpdater{
+			ImageTag:        f.ImageTag,
+			trackableSetter: f.trackableSetter,
+		}.SetImageValue,
 	}); err != nil {
 		return nil, err
 	}
@@ -59,11 +70,3 @@ func (f Filter) isOnDenyList(node *yaml.RNode) bool {
 	// https://github.com/kubernetes-sigs/kustomize/issues/890
 	return meta.Kind == `CustomResourceDefinition`
 }
-
-func updateImageTagFn(imageTag types.Image) filtersutil.SetFn {
-	return func(node *yaml.RNode) error {
-		return node.PipeE(imageTagUpdater{
-			ImageTag: imageTag,
-		})
-	}
-}

api/filters/imagetag/imagetag_test.go

@@ -10,14 +10,18 @@ import (
 	"github.com/stretchr/testify/assert"
 	filtertest "sigs.k8s.io/kustomize/api/testutils/filtertest"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 func TestImageTagUpdater_Filter(t *testing.T) {
+	mutationTrackerStub := filtertest.MutationTrackerStub{}
 	testCases := map[string]struct {
-		input          string
-		expectedOutput string
-		filter         Filter
-		fsSlice        types.FsSlice
+		input                string
+		expectedOutput       string
+		filter               Filter
+		fsSlice              types.FsSlice
+		setValueCallback     func(key, value, tag string, node *yaml.RNode)
+		expectedSetValueArgs []filtertest.SetValueArg
 	}{
 		"ignore CustomResourceDefinition": {
 			input: `
@@ -658,17 +662,198 @@ spec:
 				},
 			},
 		},
+		"mutation tracker": {
+			input: `
+group: apps
+apiVersion: v1
+kind: Deployment
+metadata:
+  name: deploy1
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:1.7.9
+        name: nginx-tagged
+      - image: nginx:latest
+        name: nginx-latest
+      - image: foobar:1
+        name: replaced-with-digest
+      - image: postgres:1.8.0
+        name: postgresdb
+      initContainers:
+      - image: nginx
+        name: nginx-notag
+      - image: nginx@sha256:111111111111111111
+        name: nginx-sha256
+      - image: alpine:1.8.0
+        name: init-alpine
+`,
+			expectedOutput: `
+group: apps
+apiVersion: v1
+kind: Deployment
+metadata:
+  name: deploy1
+spec:
+  template:
+    spec:
+      containers:
+      - image: busybox:v3
+        name: nginx-tagged
+      - image: busybox:v3
+        name: nginx-latest
+      - image: foobar:1
+        name: replaced-with-digest
+      - image: postgres:1.8.0
+        name: postgresdb
+      initContainers:
+      - image: busybox:v3
+        name: nginx-notag
+      - image: busybox:v3
+        name: nginx-sha256
+      - image: alpine:1.8.0
+        name: init-alpine
+`,
+			filter: Filter{
+				ImageTag: types.Image{
+					Name:    "nginx",
+					NewName: "busybox",
+					NewTag:  "v3",
+				},
+			},
+			fsSlice: []types.FieldSpec{
+				{
+					Path: "spec/template/spec/containers[]/image",
+				},
+				{
+					Path: "spec/template/spec/initContainers[]/image",
+				},
+			},
+			setValueCallback: mutationTrackerStub.MutationTracker,
+			expectedSetValueArgs: []filtertest.SetValueArg{
+				{
+					Value:    "busybox:v3",
+					NodePath: []string{"spec", "template", "spec", "containers", "image"},
+				},
+				{
+					Value:    "busybox:v3",
+					NodePath: []string{"spec", "template", "spec", "containers", "image"},
+				},
+				{
+					Value:    "busybox:v3",
+					NodePath: []string{"spec", "template", "spec", "initContainers", "image"},
+				},
+				{
+					Value:    "busybox:v3",
+					NodePath: []string{"spec", "template", "spec", "initContainers", "image"},
+				},
+			},
+		},
+		"image with tag and digest new name": {
+			input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+spec:
+  image: nginx:1.2.1@sha256:46d5b90a7f4e9996351ad893a26bcbd27216676ad4d5316088ce351fb2c2c3dd
+`,
+			expectedOutput: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+spec:
+  image: apache:1.2.1@sha256:46d5b90a7f4e9996351ad893a26bcbd27216676ad4d5316088ce351fb2c2c3dd
+`,
+			filter: Filter{
+				ImageTag: types.Image{
+					Name:    "nginx",
+					NewName: "apache",
+				},
+			},
+			fsSlice: []types.FieldSpec{
+				{
+					Path: "spec/image",
+				},
+			},
+		},
+		"image with tag and digest new name new tag": {
+			input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+spec:
+  image: nginx:1.2.1@sha256:46d5b90a7f4e9996351ad893a26bcbd27216676ad4d5316088ce351fb2c2c3dd
+`,
+			expectedOutput: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+spec:
+  image: apache:1.3.0
+`,
+			filter: Filter{
+				ImageTag: types.Image{
+					Name:    "nginx",
+					NewName: "apache",
+					NewTag:  "1.3.0",
+				},
+			},
+			fsSlice: []types.FieldSpec{
+				{
+					Path: "spec/image",
+				},
+			},
+		},
+		"image with tag and digest new name new tag and digest": {
+			input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+spec:
+  image: nginx:1.2.1@sha256:46d5b90a7f4e9996351ad893a26bcbd27216676ad4d5316088ce351fb2c2c3dd
+`,
+			expectedOutput: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+spec:
+  image: apache:1.3.0@sha256:xyz
+`,
+			filter: Filter{
+				ImageTag: types.Image{
+					Name:    "nginx",
+					NewName: "apache",
+					NewTag:  "1.3.0",
+					Digest:  "sha256:xyz",
+				},
+			},
+			fsSlice: []types.FieldSpec{
+				{
+					Path: "spec/image",
+				},
+			},
+		},
 	}
 
 	for tn, tc := range testCases {
+		mutationTrackerStub.Reset()
 		t.Run(tn, func(t *testing.T) {
 			filter := tc.filter
+			filter.WithMutationTracker(tc.setValueCallback)
 			filter.FsSlice = tc.fsSlice
 			if !assert.Equal(t,
 				strings.TrimSpace(tc.expectedOutput),
 				strings.TrimSpace(filtertest.RunFilter(t, tc.input, filter))) {
 				t.FailNow()
 			}
+			assert.Equal(t, tc.expectedSetValueArgs, mutationTrackerStub.SetValueArgs())
 		})
 	}
 }

api/filters/imagetag/updater.go

@@ -4,6 +4,7 @@
 package imagetag
 
 import (
+	"sigs.k8s.io/kustomize/api/filters/filtersutil"
 	"sigs.k8s.io/kustomize/api/image"
 	"sigs.k8s.io/kustomize/api/types"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
@@ -13,31 +14,53 @@ import (
 // that will update the value of the yaml node based on the provided
 // ImageTag if the current value matches the format of an image reference.
 type imageTagUpdater struct {
-	Kind     string      `yaml:"kind,omitempty"`
-	ImageTag types.Image `yaml:"imageTag,omitempty"`
+	Kind            string      `yaml:"kind,omitempty"`
+	ImageTag        types.Image `yaml:"imageTag,omitempty"`
+	trackableSetter filtersutil.TrackableSetter
 }
 
-func (u imageTagUpdater) Filter(rn *yaml.RNode) (*yaml.RNode, error) {
+func (u imageTagUpdater) SetImageValue(rn *yaml.RNode) error {
 	if err := yaml.ErrorIfInvalid(rn, yaml.ScalarNode); err != nil {
-		return nil, err
+		return err
 	}
 
 	value := rn.YNode().Value
 
 	if !image.IsImageMatched(value, u.ImageTag.Name) {
-		return rn, nil
+		return nil
 	}
 
-	name, tag := image.Split(value)
+	name, tag, digest := image.Split(value)
 	if u.ImageTag.NewName != "" {
 		name = u.ImageTag.NewName
 	}
-	if u.ImageTag.NewTag != "" {
-		tag = ":" + u.ImageTag.NewTag
-	}
-	if u.ImageTag.Digest != "" {
-		tag = "@" + u.ImageTag.Digest
+
+	// overriding tag or digest will replace both original tag and digest values
+	if u.ImageTag.NewTag != "" && u.ImageTag.Digest != "" {
+		tag = u.ImageTag.NewTag
+		digest = u.ImageTag.Digest
+	} else if u.ImageTag.NewTag != "" {
+		tag = u.ImageTag.NewTag
+		digest = ""
+	} else if u.ImageTag.Digest != "" {
+		tag = ""
+		digest = u.ImageTag.Digest
 	}
 
-	return rn.Pipe(yaml.FieldSetter{StringValue: name + tag})
+	// build final image name
+	if tag != "" {
+		name += ":" + tag
+	}
+	if digest != "" {
+		name += "@" + digest
+	}
+
+	return u.trackableSetter.SetScalar(name)(rn)
+}
+
+func (u imageTagUpdater) Filter(rn *yaml.RNode) (*yaml.RNode, error) {
+	if err := u.SetImageValue(rn); err != nil {
+		return nil, err
+	}
+	return rn, nil
 }

api/filters/labels/labels.go

@@ -20,9 +20,17 @@ type Filter struct {
 
 	// FsSlice identifies the label fields.
 	FsSlice types.FsSlice
+
+	trackableSetter filtersutil.TrackableSetter
 }
 
 var _ kio.Filter = Filter{}
+var _ kio.TrackableFilter = &Filter{}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (f *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	f.trackableSetter.WithMutationTracker(callback)
+}
 
 func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
 	keys := yaml.SortedMapKeys(f.Labels)
@@ -31,7 +39,7 @@ func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
 			for _, k := range keys {
 				if err := node.PipeE(fsslice.Filter{
 					FsSlice: f.FsSlice,
-					SetValue: filtersutil.SetEntry(
+					SetValue: f.trackableSetter.SetEntry(
 						k, f.Labels[k], yaml.NodeTagString),
 					CreateKind: yaml.MappingNode, // Labels are MappingNodes.
 					CreateTag:  yaml.NodeTagMap,

api/filters/labels/labels_test.go

@@ -11,13 +11,17 @@ import (
 	filtertest_test "sigs.k8s.io/kustomize/api/testutils/filtertest"
 	"sigs.k8s.io/kustomize/api/types"
 	"sigs.k8s.io/kustomize/kyaml/resid"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 func TestLabels_Filter(t *testing.T) {
+	mutationTrackerStub := filtertest_test.MutationTrackerStub{}
 	testCases := map[string]struct {
-		input          string
-		expectedOutput string
-		filter         Filter
+		input                string
+		expectedOutput       string
+		filter               Filter
+		setEntryCallback     func(key, value, tag string, node *yaml.RNode)
+		expectedSetEntryArgs []filtertest_test.SetValueArg
 	}{
 		"add": {
 			input: `
@@ -399,15 +403,74 @@ metadata:
 				},
 			},
 		},
+
+		// test usage of SetEntryCallback
+		"set_entry_callback": {
+			input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+  labels:
+    witcher: geralt
+`,
+			expectedOutput: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+  labels:
+    witcher: geralt
+    mage: yennefer
+a:
+  b:
+    mage: yennefer
+`,
+			filter: Filter{
+				Labels: labelMap{
+					"mage": "yennefer",
+				},
+				FsSlice: []types.FieldSpec{
+					{
+						Path:               "metadata/labels",
+						CreateIfNotPresent: true,
+					},
+					{
+						Path:               "a/b",
+						CreateIfNotPresent: true,
+					},
+				},
+			},
+			setEntryCallback: mutationTrackerStub.MutationTracker,
+			expectedSetEntryArgs: []filtertest_test.SetValueArg{
+				{
+					Key:      "mage",
+					Value:    "yennefer",
+					Tag:      "!!str",
+					NodePath: []string{"metadata", "labels"},
+				},
+				{
+					Key:      "mage",
+					Value:    "yennefer",
+					Tag:      "!!str",
+					NodePath: []string{"a", "b"},
+				},
+			},
+		},
 	}
 
 	for tn, tc := range testCases {
+		mutationTrackerStub.Reset()
 		t.Run(tn, func(t *testing.T) {
+			tc.filter.WithMutationTracker(tc.setEntryCallback)
 			if !assert.Equal(t,
 				strings.TrimSpace(tc.expectedOutput),
 				strings.TrimSpace(filtertest_test.RunFilter(t, tc.input, tc.filter))) {
 				t.FailNow()
 			}
+			if !assert.Equal(t, tc.expectedSetEntryArgs, mutationTrackerStub.SetValueArgs()) {
+				t.FailNow()
+			}
 		})
 	}
 }

api/filters/namespace/namespace.go

@@ -18,9 +18,17 @@ type Filter struct {
 
 	// FsSlice contains the FieldSpecs to locate the namespace field
 	FsSlice types.FsSlice `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
+
+	trackableSetter filtersutil.TrackableSetter
 }
 
 var _ kio.Filter = Filter{}
+var _ kio.TrackableFilter = &Filter{}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (ns *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	ns.trackableSetter.WithMutationTracker(callback)
+}
 
 func (ns Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
 	return kio.FilterAll(yaml.FilterFunc(ns.run)).Filter(nodes)
@@ -44,7 +52,7 @@ func (ns Filter) run(node *yaml.RNode) (*yaml.RNode, error) {
 	// transformations based on data -- :)
 	err := node.PipeE(fsslice.Filter{
 		FsSlice:    ns.FsSlice,
-		SetValue:   filtersutil.SetScalar(ns.Namespace),
+		SetValue:   ns.trackableSetter.SetEntry("", ns.Namespace, yaml.NodeTagString),
 		CreateKind: yaml.ScalarNode, // Namespace is a ScalarNode
 		CreateTag:  yaml.NodeTagString,
 	})
@@ -77,7 +85,7 @@ func (ns Filter) metaNamespaceHack(obj *yaml.RNode, gvk resid.Gvk) error {
 		FsSlice: []types.FieldSpec{
 			{Path: types.MetadataNamespacePath, CreateIfNotPresent: true},
 		},
-		SetValue:   filtersutil.SetScalar(ns.Namespace),
+		SetValue:   ns.trackableSetter.SetEntry("", ns.Namespace, yaml.NodeTagString),
 		CreateKind: yaml.ScalarNode, // Namespace is a ScalarNode
 	}
 	_, err := f.Filter(obj)
@@ -123,11 +131,15 @@ func (ns Filter) roleBindingHack(obj *yaml.RNode, gvk resid.Gvk) error {
 		}
 
 		// set the namespace for the default account
-		v := yaml.NewScalarRNode(ns.Namespace)
-		return o.PipeE(
+		node, err := o.Pipe(
 			yaml.LookupCreate(yaml.ScalarNode, "namespace"),
-			yaml.FieldSetter{Value: v},
 		)
+		if err != nil {
+			return err
+		}
+
+		return ns.trackableSetter.SetEntry("", ns.Namespace, yaml.NodeTagString)(node)
+
 	})
 
 	return err

api/filters/namespace/namespace_test.go

@@ -12,8 +12,11 @@ import (
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinconfig"
 	filtertest_test "sigs.k8s.io/kustomize/api/testutils/filtertest"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
+var mutationTrackerStub = filtertest_test.MutationTrackerStub{}
+
 var tests = []TestCase{
 	{
 		name: "add",
@@ -283,21 +286,125 @@ a:
 			},
 		},
 	},
+
+	{
+		name: "mutation tracker",
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: RoleBinding
+subjects:
+- name: default
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+  namespace: bar
+a:
+  b:
+    c: bar
+---
+apiVersion: example.com/v1
+kind: RoleBinding
+subjects:
+- name: default
+  namespace: bar
+metadata:
+  namespace: bar
+a:
+  b:
+    c: bar
+`,
+		filter: namespace.Filter{Namespace: "bar"},
+		fsslice: []types.FieldSpec{
+			{
+				Path:               "a/b/c",
+				CreateIfNotPresent: true,
+			},
+		},
+		mutationTracker: mutationTrackerStub.MutationTracker,
+		expectedSetValueArgs: []filtertest_test.SetValueArg{
+			{
+				Value:    "bar",
+				Tag:      "!!str",
+				NodePath: []string{"metadata", "namespace"},
+			},
+			{
+				Value:    "bar",
+				Tag:      "!!str",
+				NodePath: []string{"a", "b", "c"},
+			},
+			{
+				Value:    "bar",
+				Tag:      "!!str",
+				NodePath: []string{"metadata", "namespace"},
+			},
+			{
+				Value:    "bar",
+				Tag:      "!!str",
+				NodePath: []string{"namespace"},
+			},
+			{
+				Value:    "bar",
+				Tag:      "!!str",
+				NodePath: []string{"a", "b", "c"},
+			},
+		},
+	},
+
+	{
+		name: "numeric",
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+  namespace: "01234"
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+  namespace: "01234"
+`,
+		filter: namespace.Filter{Namespace: "01234"},
+	},
 }
 
 type TestCase struct {
-	name     string
-	input    string
-	expected string
-	filter   namespace.Filter
-	fsslice  types.FsSlice
+	name                 string
+	input                string
+	expected             string
+	filter               namespace.Filter
+	fsslice              types.FsSlice
+	mutationTracker      func(key, value, tag string, node *yaml.RNode)
+	expectedSetValueArgs []filtertest_test.SetValueArg
 }
 
 var config = builtinconfig.MakeDefaultConfig()
 
 func TestNamespace_Filter(t *testing.T) {
 	for i := range tests {
+		mutationTrackerStub.Reset()
 		test := tests[i]
+		test.filter.WithMutationTracker(test.mutationTracker)
 		t.Run(test.name, func(t *testing.T) {
 			test.filter.FsSlice = append(config.NameSpace, test.fsslice...)
 			if !assert.Equal(t,
@@ -306,6 +413,7 @@ func TestNamespace_Filter(t *testing.T) {
 					filtertest_test.RunFilter(t, test.input, test.filter))) {
 				t.FailNow()
 			}
+			assert.Equal(t, test.expectedSetValueArgs, mutationTrackerStub.SetValueArgs())
 		})
 	}
 }

api/filters/prefix/doc.go

@@ -0,0 +1,6 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package prefix contains a kio.Filter implementation of the kustomize
+// PrefixTransformer.
+package prefix

api/filters/prefix/example_test.go

@@ -0,0 +1,47 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package prefix_test
+
+import (
+	"bytes"
+	"log"
+	"os"
+
+	"sigs.k8s.io/kustomize/api/filters/prefix"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+)
+
+func ExampleFilter() {
+	err := kio.Pipeline{
+		Inputs: []kio.Reader{&kio.ByteReader{Reader: bytes.NewBufferString(`
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+`)}},
+		Filters: []kio.Filter{prefix.Filter{
+			Prefix: "baz-", FieldSpec: types.FieldSpec{Path: "metadata/name"}}},
+		Outputs: []kio.Writer{kio.ByteWriter{Writer: os.Stdout}},
+	}.Execute()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Output:
+	// apiVersion: example.com/v1
+	// kind: Foo
+	// metadata:
+	//   name: baz-instance
+	// ---
+	// apiVersion: example.com/v1
+	// kind: Bar
+	// metadata:
+	//   name: baz-instance
+}

api/filters/prefix/prefix.go

@@ -0,0 +1,50 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package prefix
+
+import (
+	"fmt"
+
+	"sigs.k8s.io/kustomize/api/filters/fieldspec"
+	"sigs.k8s.io/kustomize/api/filters/filtersutil"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// Filter applies resource name prefix's using the fieldSpecs
+type Filter struct {
+	Prefix string `json:"prefix,omitempty" yaml:"prefix,omitempty"`
+
+	FieldSpec types.FieldSpec `json:"fieldSpec,omitempty" yaml:"fieldSpec,omitempty"`
+
+	trackableSetter filtersutil.TrackableSetter
+}
+
+var _ kio.Filter = Filter{}
+var _ kio.TrackableFilter = &Filter{}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (f *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	f.trackableSetter.WithMutationTracker(callback)
+}
+
+func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
+	return kio.FilterAll(yaml.FilterFunc(f.run)).Filter(nodes)
+}
+
+func (f Filter) run(node *yaml.RNode) (*yaml.RNode, error) {
+	err := node.PipeE(fieldspec.Filter{
+		FieldSpec:  f.FieldSpec,
+		SetValue:   f.evaluateField,
+		CreateKind: yaml.ScalarNode, // Name is a ScalarNode
+		CreateTag:  yaml.NodeTagString,
+	})
+	return node, err
+}
+
+func (f Filter) evaluateField(node *yaml.RNode) error {
+	return f.trackableSetter.SetScalar(fmt.Sprintf(
+		"%s%s", f.Prefix, node.YNode().Value))(node)
+}

api/filters/prefix/prefix_test.go

@@ -0,0 +1,154 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package prefix_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"sigs.k8s.io/kustomize/api/filters/prefix"
+	filtertest_test "sigs.k8s.io/kustomize/api/testutils/filtertest"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+var mutationTrackerStub = filtertest_test.MutationTrackerStub{}
+
+var tests = map[string]TestCase{
+	"prefix": {
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: foo-instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: foo-instance
+`,
+		filter: prefix.Filter{
+			Prefix:    "foo-",
+			FieldSpec: types.FieldSpec{Path: "metadata/name"},
+		},
+	},
+
+	"data-fieldspecs": {
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+a:
+  b:
+    c: d
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+a:
+  b:
+    c: d
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+a:
+  b:
+    c: foo-d
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+a:
+  b:
+    c: foo-d
+`,
+		filter: prefix.Filter{
+			Prefix:    "foo-",
+			FieldSpec: types.FieldSpec{Path: "a/b/c"},
+		},
+	},
+
+	"mutation tracker": {
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: foo-instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: foo-instance
+`,
+		filter: prefix.Filter{
+			Prefix:    "foo-",
+			FieldSpec: types.FieldSpec{Path: "metadata/name"},
+		},
+		mutationTracker: mutationTrackerStub.MutationTracker,
+		expectedSetValueArgs: []filtertest_test.SetValueArg{
+			{
+				Value:    "foo-instance",
+				NodePath: []string{"metadata", "name"},
+			},
+			{
+				Value:    "foo-instance",
+				NodePath: []string{"metadata", "name"},
+			},
+		},
+	},
+}
+
+type TestCase struct {
+	input                string
+	expected             string
+	filter               prefix.Filter
+	mutationTracker      func(key, value, tag string, node *yaml.RNode)
+	expectedSetValueArgs []filtertest_test.SetValueArg
+}
+
+func TestFilter(t *testing.T) {
+	for name := range tests {
+		mutationTrackerStub.Reset()
+		test := tests[name]
+		test.filter.WithMutationTracker(test.mutationTracker)
+		t.Run(name, func(t *testing.T) {
+			if !assert.Equal(t,
+				strings.TrimSpace(test.expected),
+				strings.TrimSpace(
+					filtertest_test.RunFilter(t, test.input, test.filter))) {
+				t.FailNow()
+			}
+			assert.Equal(t, test.expectedSetValueArgs, mutationTrackerStub.SetValueArgs())
+		})
+	}
+}

api/filters/prefixsuffix/doc.go

@@ -1,6 +0,0 @@
-// Copyright 2020 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-// Package prefixsuffix contains a kio.Filter implementation of the kustomize
-// PrefixSuffixTransformer.
-package prefixsuffix

api/filters/prefixsuffix/example_test.go

@@ -1,47 +0,0 @@
-// Copyright 2020 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package prefixsuffix_test
-
-import (
-	"bytes"
-	"log"
-	"os"
-
-	"sigs.k8s.io/kustomize/api/filters/prefixsuffix"
-	"sigs.k8s.io/kustomize/api/types"
-	"sigs.k8s.io/kustomize/kyaml/kio"
-)
-
-func ExampleFilter() {
-	err := kio.Pipeline{
-		Inputs: []kio.Reader{&kio.ByteReader{Reader: bytes.NewBufferString(`
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: instance
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: instance
-`)}},
-		Filters: []kio.Filter{prefixsuffix.Filter{
-			Prefix: "baz-", FieldSpec: types.FieldSpec{Path: "metadata/name"}}},
-		Outputs: []kio.Writer{kio.ByteWriter{Writer: os.Stdout}},
-	}.Execute()
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	// Output:
-	// apiVersion: example.com/v1
-	// kind: Foo
-	// metadata:
-	//   name: baz-instance
-	// ---
-	// apiVersion: example.com/v1
-	// kind: Bar
-	// metadata:
-	//   name: baz-instance
-}

api/filters/prefixsuffix/prefixsuffix.go

@@ -1,43 +0,0 @@
-// Copyright 2019 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package prefixsuffix
-
-import (
-	"fmt"
-
-	"sigs.k8s.io/kustomize/api/filters/fieldspec"
-	"sigs.k8s.io/kustomize/api/filters/filtersutil"
-	"sigs.k8s.io/kustomize/api/types"
-	"sigs.k8s.io/kustomize/kyaml/kio"
-	"sigs.k8s.io/kustomize/kyaml/yaml"
-)
-
-// Filter applies resource name prefix's and suffix's using the fieldSpecs
-type Filter struct {
-	Prefix string `json:"prefix,omitempty" yaml:"prefix,omitempty"`
-	Suffix string `json:"suffix,omitempty" yaml:"suffix,omitempty"`
-
-	FieldSpec types.FieldSpec `json:"fieldSpec,omitempty" yaml:"fieldSpec,omitempty"`
-}
-
-var _ kio.Filter = Filter{}
-
-func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
-	return kio.FilterAll(yaml.FilterFunc(f.run)).Filter(nodes)
-}
-
-func (f Filter) run(node *yaml.RNode) (*yaml.RNode, error) {
-	err := node.PipeE(fieldspec.Filter{
-		FieldSpec:  f.FieldSpec,
-		SetValue:   f.evaluateField,
-		CreateKind: yaml.ScalarNode, // Name is a ScalarNode
-		CreateTag:  yaml.NodeTagString,
-	})
-	return node, err
-}
-
-func (f Filter) evaluateField(node *yaml.RNode) error {
-	return filtersutil.SetScalar(fmt.Sprintf(
-		"%s%s%s", f.Prefix, node.YNode().Value, f.Suffix))(node)
-}

api/filters/prefixsuffix/prefixsuffix_test.go

@@ -1,158 +0,0 @@
-// Copyright 2019 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package prefixsuffix_test
-
-import (
-	"strings"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"sigs.k8s.io/kustomize/api/filters/prefixsuffix"
-	filtertest_test "sigs.k8s.io/kustomize/api/testutils/filtertest"
-	"sigs.k8s.io/kustomize/api/types"
-)
-
-var tests = map[string]TestCase{
-	"prefix": {
-		input: `
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: instance
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: instance
-`,
-		expected: `
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: foo-instance
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: foo-instance
-`,
-		filter: prefixsuffix.Filter{Prefix: "foo-"},
-		fs:     types.FieldSpec{Path: "metadata/name"},
-	},
-
-	"suffix": {
-		input: `
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: instance
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: instance
-`,
-		expected: `
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: instance-foo
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: instance-foo
-`,
-		filter: prefixsuffix.Filter{Suffix: "-foo"},
-		fs:     types.FieldSpec{Path: "metadata/name"},
-	},
-
-	"prefix-suffix": {
-		input: `
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: instance
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: instance
-`,
-		expected: `
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: bar-instance-foo
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: bar-instance-foo
-`,
-		filter: prefixsuffix.Filter{Prefix: "bar-", Suffix: "-foo"},
-		fs:     types.FieldSpec{Path: "metadata/name"},
-	},
-
-	"data-fieldspecs": {
-		input: `
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: instance
-a:
-  b:
-    c: d
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: instance
-a:
-  b:
-    c: d
-`,
-		expected: `
-apiVersion: example.com/v1
-kind: Foo
-metadata:
-  name: instance
-a:
-  b:
-    c: foo-d
----
-apiVersion: example.com/v1
-kind: Bar
-metadata:
-  name: instance
-a:
-  b:
-    c: foo-d
-`,
-		filter: prefixsuffix.Filter{Prefix: "foo-"},
-		fs:     types.FieldSpec{Path: "a/b/c"},
-	},
-}
-
-type TestCase struct {
-	input    string
-	expected string
-	filter   prefixsuffix.Filter
-	fs       types.FieldSpec
-}
-
-func TestFilter(t *testing.T) {
-	for name := range tests {
-		test := tests[name]
-		t.Run(name, func(t *testing.T) {
-			test.filter.FieldSpec = test.fs
-			if !assert.Equal(t,
-				strings.TrimSpace(test.expected),
-				strings.TrimSpace(
-					filtertest_test.RunFilter(t, test.input, test.filter))) {
-				t.FailNow()
-			}
-		})
-	}
-}

api/filters/refvar/refvar_test.go

@@ -243,18 +243,7 @@ metadata:
 data:
   slice:
   - false`,
-			expectedError: `considering field 'data/slice' of object
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: dep
-  annotations:
-    config.kubernetes.io/index: '0'
-    internal.config.kubernetes.io/index: '0'
-data:
-  slice:
-  - false
-: invalid value type expect a string`,
+			expectedError: `considering field 'data/slice' of object Deployment.v1.apps/dep.[noNs]: invalid value type expect a string`,
 			filter: Filter{
 				MappingFunc: makeMf(map[string]interface{}{
 					"VAR": int64(5),
@@ -270,17 +259,7 @@ metadata:
   name: dep
 data:
   1: str`,
-			expectedError: `considering field 'data' of object
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: dep
-  annotations:
-    config.kubernetes.io/index: '0'
-    internal.config.kubernetes.io/index: '0'
-data:
-  1: str
-: invalid map key: value='1', tag='` + yaml.NodeTagInt + `'`,
+			expectedError: `considering field 'data' of object Deployment.v1.apps/dep.[noNs]: invalid map key: value='1', tag='` + yaml.NodeTagInt + `'`,
 			filter: Filter{
 				MappingFunc: makeMf(map[string]interface{}{
 					"VAR": int64(5),

api/filters/replacement/replacement.go

@@ -119,13 +119,13 @@ func applyToNode(node *yaml.RNode, value *yaml.RNode, target *types.TargetSelect
 		if target.Options != nil && target.Options.Create {
 			t, err = node.Pipe(yaml.LookupCreate(value.YNode().Kind, fieldPath...))
 		} else {
-			t, err = node.Pipe(yaml.Lookup(fieldPath...))
+			t, err = node.Pipe(&yaml.PathMatcher{Path: fieldPath})
 		}
 		if err != nil {
 			return err
 		}
 		if t != nil {
-			if err = setTargetValue(target.Options, t, value); err != nil {
+			if err = applyToOneNode(target.Options, t, value); err != nil {
 				return err
 			}
 		}
@@ -133,6 +133,27 @@ func applyToNode(node *yaml.RNode, value *yaml.RNode, target *types.TargetSelect
 	return nil
 }
 
+func applyToOneNode(options *types.FieldOptions, t *yaml.RNode, value *yaml.RNode) error {
+	if len(t.YNode().Content) == 0 {
+		if err := setTargetValue(options, t, value); err != nil {
+			return err
+		}
+		return nil
+	}
+
+	for _, scalarNode := range t.YNode().Content {
+		if options != nil && options.Create {
+			return fmt.Errorf("cannot use create option in a multi-value target")
+		}
+		rn := yaml.NewRNode(scalarNode)
+		if err := setTargetValue(options, rn, value); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func setTargetValue(options *types.FieldOptions, t *yaml.RNode, value *yaml.RNode) error {
 	value = value.Copy()
 	if options != nil && options.Delimiter != "" {
@@ -152,7 +173,14 @@ func setTargetValue(options *types.FieldOptions, t *yaml.RNode, value *yaml.RNod
 		}
 		value.YNode().Value = strings.Join(tv, options.Delimiter)
 	}
-	t.SetYNode(value.YNode())
+
+	if t.YNode().Kind == yaml.ScalarNode {
+		// For scalar, only copy the value (leave any type intact to auto-convert int->string or string->int)
+		t.YNode().Value = value.YNode().Value
+	} else {
+		t.SetYNode(value.YNode())
+	}
+
 	return nil
 }
 
@@ -172,7 +200,7 @@ func getReplacement(nodes []*yaml.RNode, r *types.Replacement) (*yaml.RNode, err
 		return nil, err
 	}
 	if rn.IsNilOrEmpty() {
-		return nil, fmt.Errorf("fieldPath `%s` is missing for replacement source %s", r.Source.FieldPath, r.Source)
+		return nil, fmt.Errorf("fieldPath `%s` is missing for replacement source %s", r.Source.FieldPath, r.Source.ResId)
 	}
 
 	return getRefinedValue(r.Source.Options, rn)

api/filters/replacement/replacement_test.go

@@ -42,7 +42,7 @@ spec:
   - select:
       kind: Deployment
       name: deploy
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: v1
@@ -95,7 +95,7 @@ spec:
   targets:
   - select:
       kind: Deployment
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers
 `,
 			expected: `apiVersion: v1
@@ -205,13 +205,13 @@ spec:
         command: ["printenv"]
         args:
         - example.com
-        - 8080
+        - "8080"
       - name: busybox
         image: busybox:latest
         args:
         - echo
         - example.com
-        - 8080
+        - "8080"
 ---
 apiVersion: v1
 kind: ConfigMap
@@ -269,7 +269,7 @@ spec:
   - select:
       kind: Deployment
 `,
-			expectedErr: "multiple matches for selector ~G_~V_Deployment|~X|~N",
+			expectedErr: "multiple matches for selector Deployment.[noVer].[noGrp]/[noName].[noNs]",
 		},
 		"replacement has no source": {
 			input: `apiVersion: v1
@@ -328,7 +328,7 @@ spec:
   - select:
       kind: Deployment
       name: deploy1
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.[name=postgresdb].image
 `,
 			expected: `apiVersion: v1
@@ -405,7 +405,7 @@ spec:
   targets:
   - select:
       version: v3
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: my-group-1/v1
@@ -492,7 +492,7 @@ spec:
   targets:
   - select:
       name: my-name-2
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `spec:
@@ -582,7 +582,7 @@ spec:
     reject:
     - name: deploy2
     - name: deploy3
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: v1
@@ -662,7 +662,7 @@ spec:
     reject:
     - kind: Deployment
       name: my-name
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: v1
@@ -731,7 +731,7 @@ spec:
     reject:
     - kind: Deployment
     - name: my-name
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: v1
@@ -799,7 +799,7 @@ spec:
   - select:
       kind: Deployment
       name: deploy1
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
     options:
       delimiter: ':'
@@ -872,7 +872,7 @@ spec:
   - select:
       kind: Pod
       name: pod2
-    fieldPaths: 
+    fieldPaths:
     - spec.volumes.0.projected.sources.0.configMap.items.0.path
     options:
       delimiter: '/'
@@ -948,7 +948,7 @@ spec:
   - select:
       kind: Pod
       name: pod1
-    fieldPaths: 
+    fieldPaths:
     - spec.volumes.0.projected.sources.0.configMap.items.0.path
     options:
       delimiter: '/'
@@ -1024,7 +1024,7 @@ spec:
   - select:
       kind: Pod
       name: pod1
-    fieldPaths: 
+    fieldPaths:
     - spec.volumes.0.projected.sources.0.configMap.items.0.path
     options:
       delimiter: '/'
@@ -1100,7 +1100,7 @@ spec:
   - select:
       kind: Pod
       name: pod1
-    fieldPaths: 
+    fieldPaths:
     - spec.volumes.0.projected.sources.0.configMap.items.0.path
     options:
       delimiter: '/'
@@ -1176,7 +1176,7 @@ spec:
   - select:
       kind: Pod
       name: pod1
-    fieldPaths: 
+    fieldPaths:
     - spec.volumes.0.projected.sources.0.configMap.items.0.path
     options:
       delimiter: '/'
@@ -1212,7 +1212,7 @@ metadata:
   targets:
   - select:
       name: deploy1
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers
     options:
       create: true
@@ -1223,7 +1223,7 @@ metadata:
   targets:
   - select:
       name: deploy2
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers
 `,
 			expected: `apiVersion: v1
@@ -1285,12 +1285,12 @@ spec:
     kind: Pod
     name: pod
     fieldPath: spec.containers
-    options: 
+    options:
       delimiter: "/"
   targets:
   - select:
       kind: Deployment
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers
 `,
 			expectedErr: "delimiter option can only be used with scalar nodes",
@@ -1331,9 +1331,9 @@ spec:
   targets:
   - select:
       kind: Deployment
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers
-    options: 
+    options:
       delimiter: "/"
 `,
 			expectedErr: "delimiter option can only be used with scalar nodes",
@@ -1354,7 +1354,7 @@ metadata:
   targets:
   - select:
       name: custom
-    fieldPaths: 
+    fieldPaths:
     - metadata.annotations.[f.g.h/i-j]
 `,
 			expected: `apiVersion: v1
@@ -1431,6 +1431,208 @@ spec:
     name: second
     version: latest
     property: second`,
+		},
+		"one replacements target has multiple value": {
+			input: `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: sample-deploy
+  name: sample-deploy
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: sample-deploy
+  template:
+    metadata:
+      labels:
+        app: sample-deploy
+    spec:
+      containers:
+      - image: nginx
+        name: main
+        env:
+        - name: deployment-name
+          value: XXXXX
+        - name: foo
+          value: bar
+      - image: nginx
+        name: sidecar
+        env:
+        - name: deployment-name
+          value: YYYYY
+`,
+			replacements: `replacements:
+- source:
+    kind: Deployment
+    name: sample-deploy
+    fieldPath: metadata.name
+  targets:
+  - select:
+      kind: Deployment
+    fieldPaths:
+    - spec.template.spec.containers.[image=nginx].env.[name=deployment-name].value
+`,
+			expected: `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: sample-deploy
+  name: sample-deploy
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: sample-deploy
+  template:
+    metadata:
+      labels:
+        app: sample-deploy
+    spec:
+      containers:
+      - image: nginx
+        name: main
+        env:
+        - name: deployment-name
+          value: sample-deploy
+        - name: foo
+          value: bar
+      - image: nginx
+        name: sidecar
+        env:
+        - name: deployment-name
+          value: sample-deploy`,
+		},
+		"index contains '*' character": {
+			input: `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: sample-deploy
+  name: sample-deploy
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: sample-deploy
+  template:
+    metadata:
+      labels:
+        app: sample-deploy
+    spec:
+      containers:
+      - image: nginx
+        name: main
+        env:
+        - name: deployment-name
+          value: XXXXX
+`,
+			replacements: `replacements:
+- source:
+    kind: Deployment
+    name: sample-deploy
+    fieldPath: metadata.name
+  targets:
+  - select:
+      kind: Deployment
+    fieldPaths:
+    - spec.template.spec.containers.*.env.[name=deployment-name].value
+`,
+			expected: `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: sample-deploy
+  name: sample-deploy
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: sample-deploy
+  template:
+    metadata:
+      labels:
+        app: sample-deploy
+    spec:
+      containers:
+      - image: nginx
+        name: main
+        env:
+        - name: deployment-name
+          value: sample-deploy`,
+		},
+		"list index contains '*' character": {
+			input: `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: sample-deploy
+  name: sample-deploy
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: sample-deploy
+  template:
+    metadata:
+      labels:
+        app: sample-deploy
+    spec:
+      containers:
+      - image: nginx
+        name: main
+        env:
+        - name: deployment-name
+          value: XXXXX
+        - name: foo
+          value: bar
+      - image: nginx
+        name: sidecar
+        env:
+        - name: deployment-name
+          value: YYYYY
+`,
+			replacements: `replacements:
+- source:
+    kind: Deployment
+    name: sample-deploy
+    fieldPath: metadata.name
+  targets:
+  - select:
+      kind: Deployment
+    fieldPaths:
+    - spec.template.spec.containers.*.env.[name=deployment-name].value
+`,
+			expected: `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: sample-deploy
+  name: sample-deploy
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: sample-deploy
+  template:
+    metadata:
+      labels:
+        app: sample-deploy
+    spec:
+      containers:
+      - image: nginx
+        name: main
+        env:
+        - name: deployment-name
+          value: sample-deploy
+        - name: foo
+          value: bar
+      - image: nginx
+        name: sidecar
+        env:
+        - name: deployment-name
+          value: sample-deploy`,
 		},
 		"multiple field paths in target": {
 			input: `apiVersion: v1
@@ -1513,7 +1715,7 @@ spec:
 kind: Deployment
 metadata:
   name: pre-deploy
-  annotations: 
+  annotations:
     internal.config.kubernetes.io/previousNames: deploy,deploy
     internal.config.kubernetes.io/previousKinds: CronJob,Deployment
     internal.config.kubernetes.io/previousNamespaces: default,default
@@ -1535,7 +1737,7 @@ spec:
   - select:
       kind: Deployment
       name: deploy
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: v1
@@ -1556,7 +1758,6 @@ spec:
         name: postgresdb
 `,
 		},
-
 		"replacement source.fieldPath does not exist": {
 			input: `apiVersion: v1
 kind: ConfigMap
@@ -1586,7 +1787,7 @@ data:
     options:
       create: true
 `,
-			expectedErr: "fieldPath `data.httpPort` is missing for replacement source ~G_~V_ConfigMap|~X|ports-from:data.httpPort",
+			expectedErr: "fieldPath `data.httpPort` is missing for replacement source ConfigMap.[noVer].[noGrp]/ports-from.[noNs]",
 		},
 		"annotationSelector": {
 			input: `apiVersion: v1
@@ -1628,7 +1829,7 @@ spec:
   targets:
   - select:
       annotationSelector: foo=bar-1
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: v1
@@ -1702,7 +1903,7 @@ spec:
   targets:
   - select:
       labelSelector: foo=bar-1
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: v1
@@ -1778,7 +1979,7 @@ spec:
       kind: Deployment
     reject:
     - labelSelector: foo=bar-2
-    fieldPaths: 
+    fieldPaths:
     - spec.template.spec.containers.1.image
 `,
 			expected: `apiVersion: v1
@@ -1810,6 +2011,310 @@ spec:
         name: nginx-tagged
       - image: postgres:1.8.0
         name: postgresdb
+`,
+		},
+		"string source -> integer target": {
+			input: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  PORT: "8080"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    ports:
+    - containerPort: 80
+`,
+			replacements: `replacements:
+- source:
+    kind: ConfigMap
+    name: config
+    fieldPath: data.PORT
+  targets:
+  - select:
+      kind: Pod
+    fieldPaths:
+    - spec.containers.0.ports.0.containerPort
+`,
+			expected: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  PORT: "8080"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    ports:
+    - containerPort: 8080
+`,
+		},
+		"string source -> boolean target": {
+			input: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  MOUNT_TOKEN: "true"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    automountServiceAccountToken: false
+`,
+			replacements: `replacements:
+- source:
+    kind: ConfigMap
+    name: config
+    fieldPath: data.MOUNT_TOKEN
+  targets:
+  - select:
+      kind: Pod
+    fieldPaths:
+    - spec.containers.0.automountServiceAccountToken
+`,
+			expected: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  MOUNT_TOKEN: "true"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    automountServiceAccountToken: true
+`,
+		},
+		// TODO: This is inconsistent with expectations; creating a numerical string would be
+		// expected, unless we had knowledge of the intended type of the field to be
+		// created.
+		"numerical string source -> integer creation": {
+			input: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  PORT: "8080"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    ports:
+    - protocol: TCP
+`,
+			replacements: `replacements:
+- source:
+    kind: ConfigMap
+    name: config
+    fieldPath: data.PORT
+  targets:
+  - select:
+      kind: Pod
+    fieldPaths:
+    - spec.containers.0.ports.0.containerPort
+    - spec.containers.0.ports.0.name
+    options:
+      create: true
+`,
+			expected: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  PORT: "8080"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    ports:
+    - protocol: TCP
+      containerPort: 8080
+      name: 8080
+`,
+		},
+		"integer source -> string target": {
+			input: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  PORT: "8080"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    ports:
+    - containerPort: 80
+`,
+			replacements: `replacements:
+- source:
+    kind: Pod
+    name: pod
+    fieldPath: spec.containers.0.ports.0.containerPort
+  targets:
+  - select:
+      kind: ConfigMap
+    fieldPaths:
+    - data.PORT
+`,
+			expected: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  PORT: "80"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    ports:
+    - containerPort: 80
+`,
+		},
+		"boolean source -> string target": {
+			input: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  MOUNT_TOKEN: "true"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    automountServiceAccountToken: false
+`,
+			replacements: `replacements:
+- source:
+    kind: Pod
+    name: pod
+    fieldPath: spec.containers.0.automountServiceAccountToken
+  targets:
+  - select:
+      kind: ConfigMap
+    fieldPaths:
+    - data.MOUNT_TOKEN
+`,
+			expected: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  MOUNT_TOKEN: "false"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    automountServiceAccountToken: false
+`,
+		},
+		// TODO: This result is expected, but we should create a string and not an
+		// integer if we could know that the target type should be one. As a result,
+		// the actual ConfigMap produces here cannot be applied.
+		"integer source -> integer creation": {
+			input: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  FOO: "Bar"
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    ports:
+    - containerPort: 80
+`,
+			replacements: `replacements:
+- source:
+    kind: Pod
+    name: pod
+    fieldPath: spec.containers.0.ports.0.containerPort
+  targets:
+  - select:
+      kind: ConfigMap
+    fieldPaths:
+    - data.PORT
+    options:
+      create: true
+`,
+			expected: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config
+data:
+  FOO: "Bar"
+  PORT: 80
+---
+apiVersion: apps/v1
+kind: Pod
+metadata:
+  name: pod
+spec:
+  containers:
+  - image: busybox
+    name: myapp-container
+    ports:
+    - containerPort: 80
 `,
 		},
 	}

api/filters/replicacount/replicacount.go

@@ -14,9 +14,17 @@ import (
 type Filter struct {
 	Replica   types.Replica   `json:"replica,omitempty" yaml:"replica,omitempty"`
 	FieldSpec types.FieldSpec `json:"fieldSpec,omitempty" yaml:"fieldSpec,omitempty"`
+
+	trackableSetter filtersutil.TrackableSetter
 }
 
 var _ kio.Filter = Filter{}
+var _ kio.TrackableFilter = &Filter{}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (rc *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	rc.trackableSetter.WithMutationTracker(callback)
+}
 
 func (rc Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
 	return kio.FilterAll(yaml.FilterFunc(rc.run)).Filter(nodes)
@@ -33,5 +41,5 @@ func (rc Filter) run(node *yaml.RNode) (*yaml.RNode, error) {
 }
 
 func (rc Filter) set(node *yaml.RNode) error {
-	return filtersutil.SetScalar(strconv.FormatInt(rc.Replica.Count, 10))(node)
+	return rc.trackableSetter.SetEntry("", strconv.FormatInt(rc.Replica.Count, 10), yaml.NodeTagInt)(node)
 }

api/filters/replicacount/replicacount_test.go

@@ -7,14 +7,17 @@ import (
 	"github.com/stretchr/testify/assert"
 	filtertest_test "sigs.k8s.io/kustomize/api/testutils/filtertest"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 func TestFilter(t *testing.T) {
-
+	mutationTrackerStub := filtertest_test.MutationTrackerStub{}
 	testCases := map[string]struct {
-		input    string
-		expected string
-		filter   Filter
+		input                string
+		expected             string
+		filter               Filter
+		mutationTracker      func(key, value, tag string, node *yaml.RNode)
+		expectedSetValueArgs []filtertest_test.SetValueArg
 	}{
 		"update field": {
 			input: `
@@ -161,9 +164,44 @@ spec:
 				FieldSpec: types.FieldSpec{Path: "spec/template/replicas"},
 			},
 		},
+		"mutation tracker": {
+			input: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: dep
+spec:
+  replicas: 5
+`,
+			expected: `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: dep
+spec:
+  replicas: 42
+`,
+			filter: Filter{
+				Replica: types.Replica{
+					Name:  "dep",
+					Count: 42,
+				},
+				FieldSpec: types.FieldSpec{Path: "spec/replicas"},
+			},
+			mutationTracker: mutationTrackerStub.MutationTracker,
+			expectedSetValueArgs: []filtertest_test.SetValueArg{
+				{
+					Value:    "42",
+					Tag:      "!!int",
+					NodePath: []string{"spec", "replicas"},
+				},
+			},
+		},
 	}
 
 	for tn, tc := range testCases {
+		mutationTrackerStub.Reset()
+		tc.filter.WithMutationTracker(tc.mutationTracker)
 		t.Run(tn, func(t *testing.T) {
 			if !assert.Equal(t,
 				strings.TrimSpace(tc.expected),
@@ -171,6 +209,7 @@ spec:
 					filtertest_test.RunFilter(t, tc.input, tc.filter))) {
 				t.FailNow()
 			}
+			assert.Equal(t, tc.expectedSetValueArgs, mutationTrackerStub.SetValueArgs())
 		})
 	}
 }

api/filters/suffix/doc.go

@@ -0,0 +1,6 @@
+// Copyright 2021 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package suffix contains a kio.Filter implementation of the kustomize
+// SuffixTransformer.
+package suffix

api/filters/suffix/example_test.go

@@ -0,0 +1,47 @@
+// Copyright 2021 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package suffix_test
+
+import (
+	"bytes"
+	"log"
+	"os"
+
+	"sigs.k8s.io/kustomize/api/filters/suffix"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+)
+
+func ExampleFilter() {
+	err := kio.Pipeline{
+		Inputs: []kio.Reader{&kio.ByteReader{Reader: bytes.NewBufferString(`
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+`)}},
+		Filters: []kio.Filter{suffix.Filter{
+			Suffix: "-baz", FieldSpec: types.FieldSpec{Path: "metadata/name"}}},
+		Outputs: []kio.Writer{kio.ByteWriter{Writer: os.Stdout}},
+	}.Execute()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Output:
+	// apiVersion: example.com/v1
+	// kind: Foo
+	// metadata:
+	//   name: instance-baz
+	// ---
+	// apiVersion: example.com/v1
+	// kind: Bar
+	// metadata:
+	//   name: instance-baz
+}

api/filters/suffix/suffix.go

@@ -0,0 +1,50 @@
+// Copyright 2021 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package suffix
+
+import (
+	"fmt"
+
+	"sigs.k8s.io/kustomize/api/filters/fieldspec"
+	"sigs.k8s.io/kustomize/api/filters/filtersutil"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// Filter applies resource name suffix's using the fieldSpecs
+type Filter struct {
+	Suffix string `json:"suffix,omitempty" yaml:"suffix,omitempty"`
+
+	FieldSpec types.FieldSpec `json:"fieldSpec,omitempty" yaml:"fieldSpec,omitempty"`
+
+	trackableSetter filtersutil.TrackableSetter
+}
+
+var _ kio.Filter = Filter{}
+var _ kio.TrackableFilter = &Filter{}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (f *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	f.trackableSetter.WithMutationTracker(callback)
+}
+
+func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
+	return kio.FilterAll(yaml.FilterFunc(f.run)).Filter(nodes)
+}
+
+func (f Filter) run(node *yaml.RNode) (*yaml.RNode, error) {
+	err := node.PipeE(fieldspec.Filter{
+		FieldSpec:  f.FieldSpec,
+		SetValue:   f.evaluateField,
+		CreateKind: yaml.ScalarNode, // Name is a ScalarNode
+		CreateTag:  yaml.NodeTagString,
+	})
+	return node, err
+}
+
+func (f Filter) evaluateField(node *yaml.RNode) error {
+	return f.trackableSetter.SetScalar(fmt.Sprintf(
+		"%s%s", node.YNode().Value, f.Suffix))(node)
+}

api/filters/suffix/suffix_test.go

@@ -0,0 +1,154 @@
+// Copyright 2021 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package suffix_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"sigs.k8s.io/kustomize/api/filters/suffix"
+	filtertest_test "sigs.k8s.io/kustomize/api/testutils/filtertest"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+var mutationTrackerStub = filtertest_test.MutationTrackerStub{}
+
+var tests = map[string]TestCase{
+	"suffix": {
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance-foo
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance-foo
+`,
+		filter: suffix.Filter{
+			Suffix:    "-foo",
+			FieldSpec: types.FieldSpec{Path: "metadata/name"},
+		},
+	},
+
+	"data-fieldspecs": {
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+a:
+  b:
+    c: d
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+a:
+  b:
+    c: d
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+a:
+  b:
+    c: d-foo
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+a:
+  b:
+    c: d-foo
+`,
+		filter: suffix.Filter{
+			Suffix:    "-foo",
+			FieldSpec: types.FieldSpec{Path: "a/b/c"},
+		},
+	},
+
+	"mutation tracker": {
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance-foo
+---
+apiVersion: example.com/v1
+kind: Bar
+metadata:
+  name: instance-foo
+`,
+		filter: suffix.Filter{
+			Suffix:    "-foo",
+			FieldSpec: types.FieldSpec{Path: "metadata/name"},
+		},
+		mutationTracker: mutationTrackerStub.MutationTracker,
+		expectedSetValueArgs: []filtertest_test.SetValueArg{
+			{
+				Value:    "instance-foo",
+				NodePath: []string{"metadata", "name"},
+			},
+			{
+				Value:    "instance-foo",
+				NodePath: []string{"metadata", "name"},
+			},
+		},
+	},
+}
+
+type TestCase struct {
+	input                string
+	expected             string
+	filter               suffix.Filter
+	mutationTracker      func(key, value, tag string, node *yaml.RNode)
+	expectedSetValueArgs []filtertest_test.SetValueArg
+}
+
+func TestFilter(t *testing.T) {
+	for name := range tests {
+		mutationTrackerStub.Reset()
+		test := tests[name]
+		test.filter.WithMutationTracker(test.mutationTracker)
+		t.Run(name, func(t *testing.T) {
+			if !assert.Equal(t,
+				strings.TrimSpace(test.expected),
+				strings.TrimSpace(
+					filtertest_test.RunFilter(t, test.input, test.filter))) {
+				t.FailNow()
+			}
+			assert.Equal(t, test.expectedSetValueArgs, mutationTrackerStub.SetValueArgs())
+		})
+	}
+}

api/go.mod

@@ -8,9 +8,11 @@ require (
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510
 	github.com/imdario/mergo v0.3.5
 	github.com/pkg/errors v0.9.1
-	github.com/stretchr/testify v1.5.1
+	github.com/stretchr/testify v1.7.0
 	gopkg.in/yaml.v2 v2.4.0
 	k8s.io/kube-openapi v0.0.0-20210421082810-95288971da7e
-	sigs.k8s.io/kustomize/kyaml v0.13.0
+	sigs.k8s.io/kustomize/kyaml v0.13.4
 	sigs.k8s.io/yaml v1.2.0
 )
+
+replace sigs.k8s.io/kustomize/kyaml => ../kyaml

api/go.sum

@@ -1,44 +1,89 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
+cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
+cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
+cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
+cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
+cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
+cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
+cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
+cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
+cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
+cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
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+cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
+cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
+cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
+cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
+cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
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 github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
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-github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
-github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
-github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
+github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
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@@ -46,185 +91,552 @@ github.com/go-openapi/jsonreference v0.19.3 h1:5cxNfTy0UVC3X8JL5ymxzyoUZmo8iZb+j
 github.com/go-openapi/jsonreference v0.19.3/go.mod h1:rjx6GuL8TTa9VaixXglHmQmIL98+wF9xc8zWvFonSJ8=
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+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
 sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
 sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=
 sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=

api/image/image.go

@@ -14,37 +14,53 @@ func IsImageMatched(s, t string) bool {
 	// 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_.{}-]*)?$")
+	pattern, _ := regexp.Compile("^" + t + "(:[a-zA-Z0-9_.{}-]*)?(@sha256:[a-zA-Z0-9_.{}-]*)?$")
 	return pattern.MatchString(s)
 }
 
 // Split separates and returns the name and tag parts
 // from the image string using either colon `:` or at `@` separators.
-// Note that the returned tag keeps its separator.
-func Split(imageName string) (name string, tag string) {
+// image reference pattern: [[host[:port]/]component/]component[:tag][@digest]
+func Split(imageName string) (name string, tag string, digest string) {
 	// check if image name contains a domain
 	// if domain is present, ignore domain and check for `:`
-	ic := -1
-	if slashIndex := strings.Index(imageName, "/"); slashIndex < 0 {
-		ic = strings.LastIndex(imageName, ":")
+	searchName := imageName
+	slashIndex := strings.Index(imageName, "/")
+	if slashIndex > 0 {
+		searchName = imageName[slashIndex:]
 	} else {
-		lastIc := strings.LastIndex(imageName[slashIndex:], ":")
-		// set ic only if `:` is present
-		if lastIc > 0 {
-			ic = slashIndex + lastIc
-		}
-	}
-	ia := strings.LastIndex(imageName, "@")
-	if ic < 0 && ia < 0 {
-		return imageName, ""
+		slashIndex = 0
 	}
 
-	i := ic
-	if ia > 0 {
-		i = ia
+	id := strings.Index(searchName, "@")
+	ic := strings.Index(searchName, ":")
+
+	// no tag or digest
+	if ic < 0 && id < 0 {
+		return imageName, "", ""
 	}
 
-	name = imageName[:i]
-	tag = imageName[i:]
-	return
+	// digest only
+	if id >= 0 && (id < ic || ic < 0) {
+		id += slashIndex
+		name = imageName[:id]
+		digest = strings.TrimPrefix(imageName[id:], "@")
+		return name, "", digest
+	}
+
+	// tag and digest
+	if id >= 0 && ic >= 0 {
+		id += slashIndex
+		ic += slashIndex
+		name = imageName[:ic]
+		tag = strings.TrimPrefix(imageName[ic:id], ":")
+		digest = strings.TrimPrefix(imageName[id:], "@")
+		return name, tag, digest
+	}
+
+	// tag only
+	ic += slashIndex
+	name = imageName[:ic]
+	tag = strings.TrimPrefix(imageName[ic:], ":")
+	return name, tag, ""
 }

api/image/image_test.go

@@ -23,11 +23,23 @@ func TestIsImageMatched(t *testing.T) {
 			isMatched: true,
 		},
 		{
-			testName:  "name is match",
+			testName:  "name is match with tag",
 			value:     "nginx:12345",
 			name:      "nginx",
 			isMatched: true,
 		},
+		{
+			testName:  "name is match with digest",
+			value:     "nginx@sha256:xyz",
+			name:      "nginx",
+			isMatched: true,
+		},
+		{
+			testName:  "name is match with tag and digest",
+			value:     "nginx:12345@sha256:xyz",
+			name:      "nginx",
+			isMatched: true,
+		},
 		{
 			testName:  "name is not a match",
 			value:     "apache:12345",
@@ -49,32 +61,65 @@ func TestSplit(t *testing.T) {
 		value    string
 		name     string
 		tag      string
+		digest   string
 	}{
 		{
 			testName: "no tag",
 			value:    "nginx",
 			name:     "nginx",
 			tag:      "",
+			digest:   "",
 		},
 		{
 			testName: "with tag",
 			value:    "nginx:1.2.3",
 			name:     "nginx",
-			tag:      ":1.2.3",
+			tag:      "1.2.3",
+			digest:   "",
 		},
 		{
 			testName: "with digest",
-			value:    "nginx@12345",
+			value:    "nginx@sha256:12345",
 			name:     "nginx",
-			tag:      "@12345",
+			tag:      "",
+			digest:   "sha256:12345",
+		},
+		{
+			testName: "with tag and digest",
+			value:    "nginx:1.2.3@sha256:12345",
+			name:     "nginx",
+			tag:      "1.2.3",
+			digest:   "sha256:12345",
+		},
+		{
+			testName: "with domain",
+			value:    "docker.io/nginx:1.2.3",
+			name:     "docker.io/nginx",
+			tag:      "1.2.3",
+			digest:   "",
+		},
+		{
+			testName: "with domain and port",
+			value:    "foo.com:443/nginx:1.2.3",
+			name:     "foo.com:443/nginx",
+			tag:      "1.2.3",
+			digest:   "",
+		},
+		{
+			testName: "with domain, port, tag and digest",
+			value:    "foo.com:443/nginx:1.2.3@sha256:12345",
+			name:     "foo.com:443/nginx",
+			tag:      "1.2.3",
+			digest:   "sha256:12345",
 		},
 	}
 
 	for _, tc := range testCases {
 		t.Run(tc.testName, func(t *testing.T) {
-			name, tag := Split(tc.value)
+			name, tag, digest := Split(tc.value)
 			assert.Equal(t, tc.name, name)
 			assert.Equal(t, tc.tag, tag)
+			assert.Equal(t, tc.digest, digest)
 		})
 	}
 }

api/internal/accumulator/namereferencetransformer.go

@@ -52,7 +52,10 @@ func (t *nameReferenceTransformer) Transform(m resmap.ResMap) error {
 	fMap := t.determineFilters(m.Resources())
 	debug(fMap)
 	for r, fList := range fMap {
-		c := m.SubsetThatCouldBeReferencedByResource(r)
+		c, err := m.SubsetThatCouldBeReferencedByResource(r)
+		if err != nil {
+			return err
+		}
 		for _, f := range fList {
 			f.Referrer = r
 			f.ReferralCandidates = c

api/internal/accumulator/namereferencetransformer_test.go

@@ -520,19 +520,10 @@ func TestNameReferenceUnhappyRun(t *testing.T) {
 						},
 					},
 				}).ResMap(),
-			expectedErr: `updating name reference in 'rules/resourceNames' field of ` +
-				`'rbac.authorization.k8s.io_v1_ClusterRole|~X|cr'` +
-				`: considering field 'rules/resourceNames' of object
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRole
-metadata:
-  name: cr
-rules:
-- resourceNames:
-    foo: bar
-  resources:
-  - secrets
-: visit traversal on path: [resourceNames]: path config error; no 'name' field in node`},
+			expectedErr: `updating name reference in 'rules/resourceNames' field of 'ClusterRole.v1.rbac.authorization.k8s.io/cr.[noNs]': ` +
+				`considering field 'rules/resourceNames' of object ClusterRole.v1.rbac.authorization.k8s.io/cr.[noNs]: visit traversal on ` +
+				`path: [resourceNames]: path config error; no 'name' field in node`,
+		},
 	}
 
 	nrt := newNameReferenceTransformer(builtinconfig.MakeDefaultConfig().NameReference)

api/internal/accumulator/refvartransformer_test.go

@@ -120,15 +120,7 @@ func TestRefVarTransformer(t *testing.T) {
 							"slice": []interface{}{5}, // noticeably *not* a []string
 						}}).ResMap(),
 			},
-			errMessage: `considering field 'data/slice' of object
-apiVersion: v1
-data:
-  slice:
-  - 5
-kind: ConfigMap
-metadata:
-  name: cm1
-: invalid value type expect a string`,
+			errMessage: `considering field 'data/slice' of object ConfigMap.v1.[noGrp]/cm1.[noNs]: invalid value type expect a string`,
 		},
 		"var replacement in nil": {
 			given: given{

api/internal/builtins/PrefixTransformer.go

@@ -0,0 +1,96 @@
+// Code generated by pluginator on PrefixTransformer; DO NOT EDIT.
+// pluginator {unknown  1970-01-01T00:00:00Z  }
+
+package builtins
+
+import (
+	"errors"
+
+	"sigs.k8s.io/kustomize/api/filters/prefix"
+	"sigs.k8s.io/kustomize/api/resmap"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/resid"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// Add the given prefix to the field
+type PrefixTransformerPlugin struct {
+	Prefix     string        `json:"prefix,omitempty" yaml:"prefix,omitempty"`
+	FieldSpecs types.FsSlice `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
+}
+
+// TODO: Make this gvk skip list part of the config.
+var prefixFieldSpecsToSkip = types.FsSlice{
+	{Gvk: resid.Gvk{Kind: "CustomResourceDefinition"}},
+	{Gvk: resid.Gvk{Group: "apiregistration.k8s.io", Kind: "APIService"}},
+	{Gvk: resid.Gvk{Kind: "Namespace"}},
+}
+
+func (p *PrefixTransformerPlugin) Config(
+	_ *resmap.PluginHelpers, c []byte) (err error) {
+	p.Prefix = ""
+	p.FieldSpecs = nil
+	err = yaml.Unmarshal(c, p)
+	if err != nil {
+		return
+	}
+	if p.FieldSpecs == nil {
+		return errors.New("fieldSpecs is not expected to be nil")
+	}
+	return
+}
+
+func (p *PrefixTransformerPlugin) Transform(m resmap.ResMap) error {
+	// Even if the Prefix is empty we want to proceed with the
+	// transformation. This allows to add contextual information
+	// to the resources (AddNamePrefix).
+	for _, r := range m.Resources() {
+		// TODO: move this test into the filter (i.e. make a better filter)
+		if p.shouldSkip(r.OrgId()) {
+			continue
+		}
+		id := r.OrgId()
+		// current default configuration contains
+		// only one entry: "metadata/name" with no GVK
+		for _, fs := range p.FieldSpecs {
+			// TODO: this is redundant to filter (but needed for now)
+			if !id.IsSelected(&fs.Gvk) {
+				continue
+			}
+			// TODO: move this test into the filter.
+			if fs.Path == "metadata/name" {
+				// "metadata/name" is the only field.
+				// this will add a prefix to the resource
+				// even if it is empty
+
+				r.AddNamePrefix(p.Prefix)
+				if p.Prefix != "" {
+					// TODO: There are multiple transformers that can change a resource's name, and each makes a call to
+					// StorePreviousID(). We should make it so that we only call StorePreviousID once per kustomization layer
+					// to avoid storing intermediate names between transformations, to prevent intermediate name conflicts.
+					r.StorePreviousId()
+				}
+			}
+			if err := r.ApplyFilter(prefix.Filter{
+				Prefix:    p.Prefix,
+				FieldSpec: fs,
+			}); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (p *PrefixTransformerPlugin) shouldSkip(id resid.ResId) bool {
+	for _, path := range prefixFieldSpecsToSkip {
+		if id.IsSelected(&path.Gvk) {
+			return true
+		}
+	}
+	return false
+}
+
+func NewPrefixTransformerPlugin() resmap.TransformerPlugin {
+	return &PrefixTransformerPlugin{}
+}

api/internal/builtins/ReplacementTransformer.go

@@ -0,0 +1,78 @@
+// Code generated by pluginator on ReplacementTransformer; DO NOT EDIT.
+// pluginator {unknown  1970-01-01T00:00:00Z  }
+
+package builtins
+
+import (
+	"fmt"
+	"reflect"
+
+	"sigs.k8s.io/kustomize/api/filters/replacement"
+	"sigs.k8s.io/kustomize/api/resmap"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/yaml"
+)
+
+// Replace values in targets with values from a source
+type ReplacementTransformerPlugin struct {
+	ReplacementList []types.ReplacementField `json:"replacements,omitempty" yaml:"replacements,omitempty"`
+	Replacements    []types.Replacement      `json:"omitempty" yaml:"omitempty"`
+}
+
+func (p *ReplacementTransformerPlugin) Config(
+	h *resmap.PluginHelpers, c []byte) (err error) {
+	p.ReplacementList = []types.ReplacementField{}
+	if err := yaml.Unmarshal(c, p); err != nil {
+		return err
+	}
+
+	for _, r := range p.ReplacementList {
+		if r.Path != "" && (r.Source != nil || len(r.Targets) != 0) {
+			return fmt.Errorf("cannot specify both path and inline replacement")
+		}
+		if r.Path != "" {
+			// load the replacement from the path
+			content, err := h.Loader().Load(r.Path)
+			if err != nil {
+				return err
+			}
+			// find if the path contains a a list of replacements or a single replacement
+			var replacement interface{}
+			err = yaml.Unmarshal(content, &replacement)
+			if err != nil {
+				return err
+			}
+			items := reflect.ValueOf(replacement)
+			switch items.Kind() {
+			case reflect.Slice:
+				repl := []types.Replacement{}
+				if err := yaml.Unmarshal(content, &repl); err != nil {
+					return err
+				}
+				p.Replacements = append(p.Replacements, repl...)
+			case reflect.Map:
+				repl := types.Replacement{}
+				if err := yaml.Unmarshal(content, &repl); err != nil {
+					return err
+				}
+				p.Replacements = append(p.Replacements, repl)
+			default:
+				return fmt.Errorf("unsupported replacement type encountered within replacement path: %v", items.Kind())
+			}
+		} else {
+			// replacement information is already loaded
+			p.Replacements = append(p.Replacements, r.Replacement)
+		}
+	}
+	return nil
+}
+
+func (p *ReplacementTransformerPlugin) Transform(m resmap.ResMap) (err error) {
+	return m.ApplyFilter(replacement.Filter{
+		Replacements: p.Replacements,
+	})
+}
+
+func NewReplacementTransformerPlugin() resmap.TransformerPlugin {
+	return &ReplacementTransformerPlugin{}
+}

api/internal/builtins/SuffixTransformer.go

@@ -0,0 +1,96 @@
+// Code generated by pluginator on SuffixTransformer; DO NOT EDIT.
+// pluginator {unknown  1970-01-01T00:00:00Z  }
+
+package builtins
+
+import (
+	"errors"
+
+	"sigs.k8s.io/kustomize/api/filters/suffix"
+	"sigs.k8s.io/kustomize/api/resmap"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/resid"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// Add the given suffix to the field
+type SuffixTransformerPlugin struct {
+	Suffix     string        `json:"suffix,omitempty" yaml:"suffix,omitempty"`
+	FieldSpecs types.FsSlice `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
+}
+
+// TODO: Make this gvk skip list part of the config.
+var suffixFieldSpecsToSkip = types.FsSlice{
+	{Gvk: resid.Gvk{Kind: "CustomResourceDefinition"}},
+	{Gvk: resid.Gvk{Group: "apiregistration.k8s.io", Kind: "APIService"}},
+	{Gvk: resid.Gvk{Kind: "Namespace"}},
+}
+
+func (p *SuffixTransformerPlugin) Config(
+	_ *resmap.PluginHelpers, c []byte) (err error) {
+	p.Suffix = ""
+	p.FieldSpecs = nil
+	err = yaml.Unmarshal(c, p)
+	if err != nil {
+		return
+	}
+	if p.FieldSpecs == nil {
+		return errors.New("fieldSpecs is not expected to be nil")
+	}
+	return
+}
+
+func (p *SuffixTransformerPlugin) Transform(m resmap.ResMap) error {
+	// Even if the Suffix is empty we want to proceed with the
+	// transformation. This allows to add contextual information
+	// to the resources (AddNameSuffix).
+	for _, r := range m.Resources() {
+		// TODO: move this test into the filter (i.e. make a better filter)
+		if p.shouldSkip(r.OrgId()) {
+			continue
+		}
+		id := r.OrgId()
+		// current default configuration contains
+		// only one entry: "metadata/name" with no GVK
+		for _, fs := range p.FieldSpecs {
+			// TODO: this is redundant to filter (but needed for now)
+			if !id.IsSelected(&fs.Gvk) {
+				continue
+			}
+			// TODO: move this test into the filter.
+			if fs.Path == "metadata/name" {
+				// "metadata/name" is the only field.
+				// this will add a suffix to the resource
+				// even if it is empty
+
+				r.AddNameSuffix(p.Suffix)
+				if p.Suffix != "" {
+					// TODO: There are multiple transformers that can change a resource's name, and each makes a call to
+					// StorePreviousID(). We should make it so that we only call StorePreviousID once per kustomization layer
+					// to avoid storing intermediate names between transformations, to prevent intermediate name conflicts.
+					r.StorePreviousId()
+				}
+			}
+			if err := r.ApplyFilter(suffix.Filter{
+				Suffix:    p.Suffix,
+				FieldSpec: fs,
+			}); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (p *SuffixTransformerPlugin) shouldSkip(id resid.ResId) bool {
+	for _, path := range suffixFieldSpecsToSkip {
+		if id.IsSelected(&path.Gvk) {
+			return true
+		}
+	}
+	return false
+}
+
+func NewSuffixTransformerPlugin() resmap.TransformerPlugin {
+	return &SuffixTransformerPlugin{}
+}

api/internal/generators/configmap_test.go

@@ -140,7 +140,7 @@ metadata:
     foo: 'bar'
 data:
   a: x
-  b: y
+  b: "y"
   c: Hello World
   d: "true"
 `,
@@ -181,7 +181,7 @@ metadata:
     river: 'Missouri'
 data:
   a: x
-  b: y
+  b: "y"
   c: Hello World
   d: "true"
 immutable: true

api/internal/generators/utils.go

@@ -83,9 +83,15 @@ func setImmutable(
 		return nil
 	}
 	if opts.Immutable {
-		if _, err := rn.Pipe(yaml.SetField("immutable", yaml.NewScalarRNode("true"))); err != nil {
+		n := &yaml.Node{
+			Kind:  yaml.ScalarNode,
+			Value: "true",
+			Tag:   yaml.NodeTagBool,
+		}
+		if _, err := rn.Pipe(yaml.FieldSetter{Name: "immutable", Value: yaml.NewRNode(n)}); err != nil {
 			return err
 		}
 	}
+
 	return nil
 }

api/internal/kusterr/yamlformaterror.go

@@ -19,6 +19,16 @@ func (e YamlFormatError) Error() string {
 	return fmt.Sprintf("YAML file [%s] encounters a format error.\n%s\n", e.Path, e.ErrorMsg)
 }
 
+// MalformedYamlError represents an error that occurred while trying to decode a given YAML.
+type MalformedYamlError struct {
+	Path     string
+	ErrorMsg string
+}
+
+func (e MalformedYamlError) Error() string {
+	return fmt.Sprintf("%s in File: %s", e.ErrorMsg, e.Path)
+}
+
 // Handler handles YamlFormatError
 func Handler(e error, path string) error {
 	if isYAMLSyntaxError(e) {
@@ -27,9 +37,19 @@ func Handler(e error, path string) error {
 			ErrorMsg: e.Error(),
 		}
 	}
+	if IsMalformedYAMLError(e) {
+		return MalformedYamlError{
+			Path:     path,
+			ErrorMsg: e.Error(),
+		}
+	}
 	return e
 }
 
 func isYAMLSyntaxError(e error) bool {
 	return strings.Contains(e.Error(), "error converting YAML to JSON") || strings.Contains(e.Error(), "error unmarshaling JSON")
 }
+
+func IsMalformedYAMLError(e error) bool {
+	return strings.Contains(e.Error(), "MalformedYAMLError")
+}

api/internal/plugins/builtinhelpers/builtinplugintype_string.go

@@ -21,16 +21,18 @@ func _() {
 	_ = x[PatchStrategicMergeTransformer-10]
 	_ = x[PatchTransformer-11]
 	_ = x[PrefixSuffixTransformer-12]
-	_ = x[ReplicaCountTransformer-13]
-	_ = x[SecretGenerator-14]
-	_ = x[ValueAddTransformer-15]
-	_ = x[HelmChartInflationGenerator-16]
-	_ = x[ReplacementTransformer-17]
+	_ = x[PrefixTransformer-13]
+	_ = x[SuffixTransformer-14]
+	_ = x[ReplicaCountTransformer-15]
+	_ = x[SecretGenerator-16]
+	_ = x[ValueAddTransformer-17]
+	_ = x[HelmChartInflationGenerator-18]
+	_ = x[ReplacementTransformer-19]
 }
 
-const _BuiltinPluginType_name = "UnknownAnnotationsTransformerConfigMapGeneratorIAMPolicyGeneratorHashTransformerImageTagTransformerLabelTransformerLegacyOrderTransformerNamespaceTransformerPatchJson6902TransformerPatchStrategicMergeTransformerPatchTransformerPrefixSuffixTransformerReplicaCountTransformerSecretGeneratorValueAddTransformerHelmChartInflationGeneratorReplacementTransformer"
+const _BuiltinPluginType_name = "UnknownAnnotationsTransformerConfigMapGeneratorIAMPolicyGeneratorHashTransformerImageTagTransformerLabelTransformerLegacyOrderTransformerNamespaceTransformerPatchJson6902TransformerPatchStrategicMergeTransformerPatchTransformerPrefixSuffixTransformerPrefixTransformerSuffixTransformerReplicaCountTransformerSecretGeneratorValueAddTransformerHelmChartInflationGeneratorReplacementTransformer"
 
-var _BuiltinPluginType_index = [...]uint16{0, 7, 29, 47, 65, 80, 99, 115, 137, 157, 181, 211, 227, 250, 273, 288, 307, 334, 356}
+var _BuiltinPluginType_index = [...]uint16{0, 7, 29, 47, 65, 80, 99, 115, 137, 157, 181, 211, 227, 250, 267, 284, 307, 322, 341, 368, 390}
 
 func (i BuiltinPluginType) String() string {
 	if i < 0 || i >= BuiltinPluginType(len(_BuiltinPluginType_index)-1) {

api/internal/plugins/builtinhelpers/builtins.go

@@ -4,7 +4,7 @@
 package builtinhelpers
 
 import (
-	"sigs.k8s.io/kustomize/api/builtins"
+	"sigs.k8s.io/kustomize/api/internal/builtins"
 	"sigs.k8s.io/kustomize/api/resmap"
 )
 
@@ -25,6 +25,8 @@ const (
 	PatchStrategicMergeTransformer
 	PatchTransformer
 	PrefixSuffixTransformer
+	PrefixTransformer
+	SuffixTransformer
 	ReplicaCountTransformer
 	SecretGenerator
 	ValueAddTransformer
@@ -64,6 +66,35 @@ var GeneratorFactories = map[BuiltinPluginType]func() resmap.GeneratorPlugin{
 	HelmChartInflationGenerator: builtins.NewHelmChartInflationGeneratorPlugin,
 }
 
+type MultiTransformer struct {
+	transformers []resmap.TransformerPlugin
+}
+
+func (t *MultiTransformer) Transform(m resmap.ResMap) error {
+	for _, transformer := range t.transformers {
+		if err := transformer.Transform(m); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (t *MultiTransformer) Config(h *resmap.PluginHelpers, b []byte) error {
+	for _, transformer := range t.transformers {
+		if err := transformer.Config(h, b); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func NewMultiTransformer() resmap.TransformerPlugin {
+	return &MultiTransformer{[]resmap.TransformerPlugin{
+		builtins.NewPrefixTransformerPlugin(),
+		builtins.NewSuffixTransformerPlugin(),
+	}}
+}
+
 var TransformerFactories = map[BuiltinPluginType]func() resmap.TransformerPlugin{
 	AnnotationsTransformer:         builtins.NewAnnotationsTransformerPlugin,
 	HashTransformer:                builtins.NewHashTransformerPlugin,
@@ -74,7 +105,9 @@ var TransformerFactories = map[BuiltinPluginType]func() resmap.TransformerPlugin
 	PatchJson6902Transformer:       builtins.NewPatchJson6902TransformerPlugin,
 	PatchStrategicMergeTransformer: builtins.NewPatchStrategicMergeTransformerPlugin,
 	PatchTransformer:               builtins.NewPatchTransformerPlugin,
-	PrefixSuffixTransformer:        builtins.NewPrefixSuffixTransformerPlugin,
+	PrefixSuffixTransformer:        NewMultiTransformer,
+	PrefixTransformer:              builtins.NewPrefixTransformerPlugin,
+	SuffixTransformer:              builtins.NewSuffixTransformerPlugin,
 	ReplacementTransformer:         builtins.NewReplacementTransformerPlugin,
 	ReplicaCountTransformer:        builtins.NewReplicaCountTransformerPlugin,
 	ValueAddTransformer:            builtins.NewValueAddTransformerPlugin,

api/internal/plugins/loader/loader.go

@@ -53,14 +53,18 @@ func (l *Loader) SetWorkDir(wd string) {
 }
 
 func (l *Loader) LoadGenerators(
-	ldr ifc.Loader, v ifc.Validator, rm resmap.ResMap) ([]resmap.Generator, error) {
-	var result []resmap.Generator
+	ldr ifc.Loader, v ifc.Validator, rm resmap.ResMap) (
+	result []*resmap.GeneratorWithProperties, err error) {
 	for _, res := range rm.Resources() {
 		g, err := l.LoadGenerator(ldr, v, res)
 		if err != nil {
 			return nil, err
 		}
-		result = append(result, g)
+		generatorOrigin, err := resource.OriginFromCustomPlugin(res)
+		if err != nil {
+			return nil, err
+		}
+		result = append(result, &resmap.GeneratorWithProperties{Generator: g, Origin: generatorOrigin})
 	}
 	return result, nil
 }
@@ -79,20 +83,24 @@ func (l *Loader) LoadGenerator(
 }
 
 func (l *Loader) LoadTransformers(
-	ldr ifc.Loader, v ifc.Validator, rm resmap.ResMap) ([]resmap.Transformer, error) {
-	var result []resmap.Transformer
+	ldr ifc.Loader, v ifc.Validator, rm resmap.ResMap) ([]*resmap.TransformerWithProperties, error) {
+	var result []*resmap.TransformerWithProperties
 	for _, res := range rm.Resources() {
 		t, err := l.LoadTransformer(ldr, v, res)
 		if err != nil {
 			return nil, err
 		}
-		result = append(result, t)
+		transformerOrigin, err := resource.OriginFromCustomPlugin(res)
+		if err != nil {
+			return nil, err
+		}
+		result = append(result, &resmap.TransformerWithProperties{Transformer: t, Origin: transformerOrigin})
 	}
 	return result, nil
 }
 
 func (l *Loader) LoadTransformer(
-	ldr ifc.Loader, v ifc.Validator, res *resource.Resource) (resmap.Transformer, error) {
+	ldr ifc.Loader, v ifc.Validator, res *resource.Resource) (*resmap.TransformerWithProperties, error) {
 	c, err := l.loadAndConfigurePlugin(ldr, v, res)
 	if err != nil {
 		return nil, err
@@ -101,7 +109,7 @@ func (l *Loader) LoadTransformer(
 	if !ok {
 		return nil, fmt.Errorf("plugin %s not a transformer", res.OrgId())
 	}
-	return t, nil
+	return &resmap.TransformerWithProperties{Transformer: t}, nil
 }
 
 func relativePluginPath(id resid.ResId) string {

api/internal/target/kusttarget.go

@@ -11,14 +11,16 @@ import (
 
 	"github.com/pkg/errors"
 
-	"sigs.k8s.io/kustomize/api/builtins"
 	"sigs.k8s.io/kustomize/api/ifc"
 	"sigs.k8s.io/kustomize/api/internal/accumulator"
+	"sigs.k8s.io/kustomize/api/internal/builtins"
+	"sigs.k8s.io/kustomize/api/internal/kusterr"
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinconfig"
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinhelpers"
 	"sigs.k8s.io/kustomize/api/internal/plugins/loader"
 	"sigs.k8s.io/kustomize/api/internal/utils"
 	"sigs.k8s.io/kustomize/api/konfig"
+	load "sigs.k8s.io/kustomize/api/loader"
 	"sigs.k8s.io/kustomize/api/resmap"
 	"sigs.k8s.io/kustomize/api/resource"
 	"sigs.k8s.io/kustomize/api/types"
@@ -29,10 +31,12 @@ import (
 // KustTarget encapsulates the entirety of a kustomization build.
 type KustTarget struct {
 	kustomization *types.Kustomization
+	kustFileName  string
 	ldr           ifc.Loader
 	validator     ifc.Validator
 	rFactory      *resmap.Factory
 	pLdr          *loader.Loader
+	origin        *resource.Origin
 }
 
 // NewKustTarget returns a new instance of KustTarget.
@@ -53,7 +57,7 @@ func NewKustTarget(
 
 // Load attempts to load the target's kustomization file.
 func (kt *KustTarget) Load() error {
-	content, err := loadKustFile(kt.ldr)
+	content, kustFileName, err := loadKustFile(kt.ldr)
 	if err != nil {
 		return err
 	}
@@ -74,6 +78,7 @@ func (kt *KustTarget) Load() error {
 				strings.Join(errs, "\n"), kt.ldr.Root())
 	}
 	kt.kustomization = &k
+	kt.kustFileName = kustFileName
 	return nil
 }
 
@@ -85,23 +90,25 @@ func (kt *KustTarget) Kustomization() types.Kustomization {
 	return result
 }
 
-func loadKustFile(ldr ifc.Loader) ([]byte, error) {
+func loadKustFile(ldr ifc.Loader) ([]byte, string, error) {
 	var content []byte
 	match := 0
+	var kustFileName string
 	for _, kf := range konfig.RecognizedKustomizationFileNames() {
 		c, err := ldr.Load(kf)
 		if err == nil {
 			match += 1
 			content = c
+			kustFileName = kf
 		}
 	}
 	switch match {
 	case 0:
-		return nil, NewErrMissingKustomization(ldr.Root())
+		return nil, "", NewErrMissingKustomization(ldr.Root())
 	case 1:
-		return content, nil
+		return content, kustFileName, nil
 	default:
-		return nil, fmt.Errorf(
+		return nil, "", fmt.Errorf(
 			"Found multiple kustomization files under: %s\n", ldr.Root())
 	}
 }
@@ -113,7 +120,12 @@ func (kt *KustTarget) MakeCustomizedResMap() (resmap.ResMap, error) {
 }
 
 func (kt *KustTarget) makeCustomizedResMap() (resmap.ResMap, error) {
-	ra, err := kt.AccumulateTarget(&resource.Origin{})
+	var origin *resource.Origin
+	if len(kt.kustomization.BuildMetadata) != 0 {
+		origin = &resource.Origin{}
+	}
+	kt.origin = origin
+	ra, err := kt.AccumulateTarget()
 	if err != nil {
 		return nil, err
 	}
@@ -165,20 +177,20 @@ func (kt *KustTarget) addHashesToNames(
 // through kustomization directories, it updates `origin.path`
 // accordingly. When a remote base is found, it updates `origin.repo`
 // and `origin.ref` accordingly.
-func (kt *KustTarget) AccumulateTarget(origin *resource.Origin) (
+func (kt *KustTarget) AccumulateTarget() (
 	ra *accumulator.ResAccumulator, err error) {
-	return kt.accumulateTarget(accumulator.MakeEmptyAccumulator(), origin)
+	return kt.accumulateTarget(accumulator.MakeEmptyAccumulator())
 }
 
 // ra should be empty when this KustTarget is a Kustomization, or the ra of the parent if this KustTarget is a Component
 // (or empty if the Component does not have a parent).
-func (kt *KustTarget) accumulateTarget(ra *accumulator.ResAccumulator, origin *resource.Origin) (
+func (kt *KustTarget) accumulateTarget(ra *accumulator.ResAccumulator) (
 	resRa *accumulator.ResAccumulator, err error) {
-	ra, err = kt.accumulateResources(ra, kt.kustomization.Resources, origin)
+	ra, err = kt.accumulateResources(ra, kt.kustomization.Resources)
 	if err != nil {
 		return nil, errors.Wrap(err, "accumulating resources")
 	}
-	ra, err = kt.accumulateComponents(ra, kt.kustomization.Components, origin)
+	ra, err = kt.accumulateComponents(ra, kt.kustomization.Components)
 	if err != nil {
 		return nil, errors.Wrap(err, "accumulating components")
 	}
@@ -241,22 +253,29 @@ func (kt *KustTarget) IgnoreLocal(ra *accumulator.ResAccumulator) error {
 
 func (kt *KustTarget) runGenerators(
 	ra *accumulator.ResAccumulator) error {
-	var generators []resmap.Generator
+	var generators []*resmap.GeneratorWithProperties
 	gs, err := kt.configureBuiltinGenerators()
 	if err != nil {
 		return err
 	}
 	generators = append(generators, gs...)
+
 	gs, err = kt.configureExternalGenerators()
 	if err != nil {
 		return errors.Wrap(err, "loading generator plugins")
 	}
 	generators = append(generators, gs...)
-	for _, g := range generators {
+	for i, g := range generators {
 		resMap, err := g.Generate()
 		if err != nil {
 			return err
 		}
+		if resMap != nil {
+			err = resMap.AddOriginAnnotation(generators[i].Origin)
+			if err != nil {
+				return errors.Wrapf(err, "adding origin annotations for generator %v", g)
+			}
+		}
 		err = ra.AbsorbAll(resMap)
 		if err != nil {
 			return errors.Wrapf(err, "merging from generator %v", g)
@@ -265,7 +284,8 @@ func (kt *KustTarget) runGenerators(
 	return nil
 }
 
-func (kt *KustTarget) configureExternalGenerators() ([]resmap.Generator, error) {
+func (kt *KustTarget) configureExternalGenerators() (
+	[]*resmap.GeneratorWithProperties, error) {
 	ra := accumulator.MakeEmptyAccumulator()
 	var generatorPaths []string
 	for _, p := range kt.kustomization.Generators {
@@ -276,9 +296,17 @@ func (kt *KustTarget) configureExternalGenerators() ([]resmap.Generator, error)
 			generatorPaths = append(generatorPaths, p)
 			continue
 		}
+		// inline config, track the origin
+		if kt.origin != nil {
+			resources := rm.Resources()
+			for _, r := range resources {
+				r.SetOrigin(kt.origin.Append(kt.kustFileName))
+				rm.Replace(r)
+			}
+		}
 		ra.AppendAll(rm)
 	}
-	ra, err := kt.accumulateResources(ra, generatorPaths, &resource.Origin{})
+	ra, err := kt.accumulateResources(ra, generatorPaths)
 	if err != nil {
 		return nil, err
 	}
@@ -286,7 +314,7 @@ func (kt *KustTarget) configureExternalGenerators() ([]resmap.Generator, error)
 }
 
 func (kt *KustTarget) runTransformers(ra *accumulator.ResAccumulator) error {
-	var r []resmap.Transformer
+	var r []*resmap.TransformerWithProperties
 	tConfig := ra.GetTransformerConfig()
 	lts, err := kt.configureBuiltinTransformers(tConfig)
 	if err != nil {
@@ -301,7 +329,7 @@ func (kt *KustTarget) runTransformers(ra *accumulator.ResAccumulator) error {
 	return ra.Transform(newMultiTransformer(r))
 }
 
-func (kt *KustTarget) configureExternalTransformers(transformers []string) ([]resmap.Transformer, error) {
+func (kt *KustTarget) configureExternalTransformers(transformers []string) ([]*resmap.TransformerWithProperties, error) {
 	ra := accumulator.MakeEmptyAccumulator()
 	var transformerPaths []string
 	for _, p := range transformers {
@@ -312,9 +340,17 @@ func (kt *KustTarget) configureExternalTransformers(transformers []string) ([]re
 			transformerPaths = append(transformerPaths, p)
 			continue
 		}
+		// inline config, track the origin
+		if kt.origin != nil {
+			resources := rm.Resources()
+			for _, r := range resources {
+				r.SetOrigin(kt.origin.Append(kt.kustFileName))
+				rm.Replace(r)
+			}
+		}
 		ra.AppendAll(rm)
 	}
-	ra, err := kt.accumulateResources(ra, transformerPaths, &resource.Origin{})
+	ra, err := kt.accumulateResources(ra, transformerPaths)
 	if err != nil {
 		return nil, err
 	}
@@ -362,16 +398,32 @@ func (kt *KustTarget) removeValidatedByLabel(rm resmap.ResMap) error {
 // accumulateResources fills the given resourceAccumulator
 // with resources read from the given list of paths.
 func (kt *KustTarget) accumulateResources(
-	ra *accumulator.ResAccumulator, paths []string, origin *resource.Origin) (*accumulator.ResAccumulator, error) {
+	ra *accumulator.ResAccumulator, paths []string) (*accumulator.ResAccumulator, error) {
 	for _, path := range paths {
 		// try loading resource as file then as base (directory or git repository)
-		if errF := kt.accumulateFile(ra, path, origin); errF != nil {
+		if errF := kt.accumulateFile(ra, path); errF != nil {
+			// not much we can do if the error is an HTTP error so we bail out
+			if errors.Is(errF, load.ErrorHTTP) {
+				return nil, errF
+			}
+			if kusterr.IsMalformedYAMLError(errF) { // Some error occurred while tyring to decode YAML file
+				return nil, errF
+			}
 			ldr, err := kt.ldr.New(path)
 			if err != nil {
 				return nil, errors.Wrapf(
 					err, "accumulation err='%s'", errF.Error())
 			}
-			ra, err = kt.accumulateDirectory(ra, ldr, origin.Append(path), false)
+			// store the origin, we'll need it later
+			origin := kt.origin.Copy()
+			if kt.origin != nil {
+				kt.origin = kt.origin.Append(path)
+				ra, err = kt.accumulateDirectory(ra, ldr, false)
+				// after we are done recursing through the directory, reset the origin
+				kt.origin = &origin
+			} else {
+				ra, err = kt.accumulateDirectory(ra, ldr, false)
+			}
 			if err != nil {
 				return nil, errors.Wrapf(
 					err, "accumulation err='%s'", errF.Error())
@@ -384,7 +436,7 @@ func (kt *KustTarget) accumulateResources(
 // accumulateResources fills the given resourceAccumulator
 // with resources read from the given list of paths.
 func (kt *KustTarget) accumulateComponents(
-	ra *accumulator.ResAccumulator, paths []string, origin *resource.Origin) (*accumulator.ResAccumulator, error) {
+	ra *accumulator.ResAccumulator, paths []string) (*accumulator.ResAccumulator, error) {
 	for _, path := range paths {
 		// Components always refer to directories
 		ldr, errL := kt.ldr.New(path)
@@ -392,8 +444,16 @@ func (kt *KustTarget) accumulateComponents(
 			return nil, fmt.Errorf("loader.New %q", errL)
 		}
 		var errD error
-		origin.Path = filepath.Join(origin.Path, path)
-		ra, errD = kt.accumulateDirectory(ra, ldr, origin, true)
+		// store the origin, we'll need it later
+		origin := kt.origin.Copy()
+		if kt.origin != nil {
+			kt.origin = kt.origin.Append(path)
+			ra, errD = kt.accumulateDirectory(ra, ldr, true)
+			// after we are done recursing through the directory, reset the origin
+			kt.origin = &origin
+		} else {
+			ra, errD = kt.accumulateDirectory(ra, ldr, true)
+		}
 		if errD != nil {
 			return nil, fmt.Errorf("accumulateDirectory: %q", errD)
 		}
@@ -402,7 +462,7 @@ func (kt *KustTarget) accumulateComponents(
 }
 
 func (kt *KustTarget) accumulateDirectory(
-	ra *accumulator.ResAccumulator, ldr ifc.Loader, origin *resource.Origin, isComponent bool) (*accumulator.ResAccumulator, error) {
+	ra *accumulator.ResAccumulator, ldr ifc.Loader, isComponent bool) (*accumulator.ResAccumulator, error) {
 	defer ldr.Cleanup()
 	subKt := NewKustTarget(ldr, kt.validator, kt.rFactory, kt.pLdr)
 	err := subKt.Load()
@@ -411,6 +471,7 @@ func (kt *KustTarget) accumulateDirectory(
 			err, "couldn't make target for path '%s'", ldr.Root())
 	}
 	subKt.kustomization.BuildMetadata = kt.kustomization.BuildMetadata
+	subKt.origin = kt.origin
 	var bytes []byte
 	path := ldr.Root()
 	if openApiPath, exists := subKt.Kustomization().OpenAPI["path"]; exists {
@@ -434,12 +495,12 @@ func (kt *KustTarget) accumulateDirectory(
 	var subRa *accumulator.ResAccumulator
 	if isComponent {
 		// Components don't create a new accumulator: the kustomization directives are added to the current accumulator
-		subRa, err = subKt.accumulateTarget(ra, origin)
+		subRa, err = subKt.accumulateTarget(ra)
 		ra = accumulator.MakeEmptyAccumulator()
 	} else {
 		// Child Kustomizations create a new accumulator which resolves their kustomization directives, which will later
 		// be merged into the current accumulator.
-		subRa, err = subKt.AccumulateTarget(origin)
+		subRa, err = subKt.AccumulateTarget()
 	}
 	if err != nil {
 		return nil, errors.Wrapf(
@@ -454,17 +515,20 @@ func (kt *KustTarget) accumulateDirectory(
 }
 
 func (kt *KustTarget) accumulateFile(
-	ra *accumulator.ResAccumulator, path string, origin *resource.Origin) error {
+	ra *accumulator.ResAccumulator, path string) error {
 	resources, err := kt.rFactory.FromFile(kt.ldr, path)
 	if err != nil {
 		return errors.Wrapf(err, "accumulating resources from '%s'", path)
 	}
-	if utils.StringSliceContains(kt.kustomization.BuildMetadata, "originAnnotations") {
-		origin = origin.Append(path)
-		err = resources.AnnotateAll(utils.OriginAnnotation, origin.String())
+	if kt.origin != nil {
+		originAnno, err := kt.origin.Append(path).String()
 		if err != nil {
 			return errors.Wrapf(err, "cannot add path annotation for '%s'", path)
 		}
+		err = resources.AnnotateAll(utils.OriginAnnotationKey, originAnno)
+		if err != nil || originAnno == "" {
+			return errors.Wrapf(err, "cannot add path annotation for '%s'", path)
+		}
 	}
 	err = ra.AppendAll(resources)
 	if err != nil {

api/internal/target/kusttarget_configplugin.go

@@ -5,11 +5,14 @@ package target
 
 import (
 	"fmt"
+	"path/filepath"
 
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinconfig"
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinhelpers"
 	"sigs.k8s.io/kustomize/api/resmap"
+	"sigs.k8s.io/kustomize/api/resource"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
 // Functions dedicated to configuring the builtin
@@ -28,7 +31,7 @@ import (
 // N plugin instances with differing configurations.
 
 func (kt *KustTarget) configureBuiltinGenerators() (
-	result []resmap.Generator, err error) {
+	result []*resmap.GeneratorWithProperties, err error) {
 	for _, bpt := range []builtinhelpers.BuiltinPluginType{
 		builtinhelpers.ConfigMapGenerator,
 		builtinhelpers.SecretGenerator,
@@ -39,19 +42,38 @@ func (kt *KustTarget) configureBuiltinGenerators() (
 		if err != nil {
 			return nil, err
 		}
-		result = append(result, r...)
+
+		var generatorOrigin *resource.Origin
+		if kt.origin != nil {
+			generatorOrigin = &resource.Origin{
+				Repo:         kt.origin.Repo,
+				Ref:          kt.origin.Ref,
+				ConfiguredIn: filepath.Join(kt.origin.Path, kt.kustFileName),
+				ConfiguredBy: yaml.ResourceIdentifier{
+					TypeMeta: yaml.TypeMeta{
+						APIVersion: "builtin",
+						Kind:       bpt.String(),
+					},
+				},
+			}
+		}
+
+		for i := range r {
+			result = append(result, &resmap.GeneratorWithProperties{Generator: r[i], Origin: generatorOrigin})
+		}
 	}
 	return result, nil
 }
 
 func (kt *KustTarget) configureBuiltinTransformers(
 	tc *builtinconfig.TransformerConfig) (
-	result []resmap.Transformer, err error) {
+	result []*resmap.TransformerWithProperties, err error) {
 	for _, bpt := range []builtinhelpers.BuiltinPluginType{
 		builtinhelpers.PatchStrategicMergeTransformer,
 		builtinhelpers.PatchTransformer,
 		builtinhelpers.NamespaceTransformer,
-		builtinhelpers.PrefixSuffixTransformer,
+		builtinhelpers.PrefixTransformer,
+		builtinhelpers.SuffixTransformer,
 		builtinhelpers.LabelTransformer,
 		builtinhelpers.AnnotationsTransformer,
 		builtinhelpers.PatchJson6902Transformer,
@@ -64,7 +86,23 @@ func (kt *KustTarget) configureBuiltinTransformers(
 		if err != nil {
 			return nil, err
 		}
-		result = append(result, r...)
+		var transformerOrigin *resource.Origin
+		if kt.origin != nil {
+			transformerOrigin = &resource.Origin{
+				Repo:         kt.origin.Repo,
+				Ref:          kt.origin.Ref,
+				ConfiguredIn: filepath.Join(kt.origin.Path, kt.kustFileName),
+				ConfiguredBy: yaml.ResourceIdentifier{
+					TypeMeta: yaml.TypeMeta{
+						APIVersion: "builtin",
+						Kind:       bpt.String(),
+					},
+				},
+			}
+		}
+		for i := range r {
+			result = append(result, &resmap.TransformerWithProperties{Transformer: r[i], Origin: transformerOrigin})
+		}
 	}
 	return result, nil
 }
@@ -147,6 +185,9 @@ var transformerConfigurators = map[builtinhelpers.BuiltinPluginType]func(
 	builtinhelpers.NamespaceTransformer: func(
 		kt *KustTarget, bpt builtinhelpers.BuiltinPluginType, f tFactory, tc *builtinconfig.TransformerConfig) (
 		result []resmap.Transformer, err error) {
+		if kt.kustomization.Namespace == "" {
+			return
+		}
 		var c struct {
 			types.ObjectMeta `json:"metadata,omitempty" yaml:"metadata,omitempty"`
 			FieldSpecs       []types.FieldSpec
@@ -230,6 +271,9 @@ var transformerConfigurators = map[builtinhelpers.BuiltinPluginType]func(
 	builtinhelpers.LabelTransformer: func(
 		kt *KustTarget, bpt builtinhelpers.BuiltinPluginType, f tFactory, tc *builtinconfig.TransformerConfig) (
 		result []resmap.Transformer, err error) {
+		if len(kt.kustomization.Labels) == 0 && len(kt.kustomization.CommonLabels) == 0 {
+			return
+		}
 		for _, label := range kt.kustomization.Labels {
 			var c struct {
 				Labels     map[string]string
@@ -272,6 +316,9 @@ var transformerConfigurators = map[builtinhelpers.BuiltinPluginType]func(
 	builtinhelpers.AnnotationsTransformer: func(
 		kt *KustTarget, bpt builtinhelpers.BuiltinPluginType, f tFactory, tc *builtinconfig.TransformerConfig) (
 		result []resmap.Transformer, err error) {
+		if len(kt.kustomization.CommonAnnotations) == 0 {
+			return
+		}
 		var c struct {
 			Annotations map[string]string
 			FieldSpecs  []types.FieldSpec
@@ -286,16 +333,17 @@ var transformerConfigurators = map[builtinhelpers.BuiltinPluginType]func(
 		result = append(result, p)
 		return
 	},
-	builtinhelpers.PrefixSuffixTransformer: func(
+	builtinhelpers.PrefixTransformer: func(
 		kt *KustTarget, bpt builtinhelpers.BuiltinPluginType, f tFactory, tc *builtinconfig.TransformerConfig) (
 		result []resmap.Transformer, err error) {
+		if kt.kustomization.NamePrefix == "" {
+			return
+		}
 		var c struct {
-			Prefix     string
-			Suffix     string
-			FieldSpecs []types.FieldSpec
+			Prefix     string            `json:"prefix,omitempty" yaml:"prefix,omitempty"`
+			FieldSpecs []types.FieldSpec `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
 		}
 		c.Prefix = kt.kustomization.NamePrefix
-		c.Suffix = kt.kustomization.NameSuffix
 		c.FieldSpecs = tc.NamePrefix
 		p := f()
 		err = kt.configureBuiltinPlugin(p, c, bpt)
@@ -305,6 +353,26 @@ var transformerConfigurators = map[builtinhelpers.BuiltinPluginType]func(
 		result = append(result, p)
 		return
 	},
+	builtinhelpers.SuffixTransformer: func(
+		kt *KustTarget, bpt builtinhelpers.BuiltinPluginType, f tFactory, tc *builtinconfig.TransformerConfig) (
+		result []resmap.Transformer, err error) {
+		if kt.kustomization.NameSuffix == "" {
+			return
+		}
+		var c struct {
+			Suffix     string            `json:"suffix,omitempty" yaml:"suffix,omitempty"`
+			FieldSpecs []types.FieldSpec `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
+		}
+		c.Suffix = kt.kustomization.NameSuffix
+		c.FieldSpecs = tc.NameSuffix
+		p := f()
+		err = kt.configureBuiltinPlugin(p, c, bpt)
+		if err != nil {
+			return nil, err
+		}
+		result = append(result, p)
+		return
+	},
 	builtinhelpers.ImageTagTransformer: func(
 		kt *KustTarget, bpt builtinhelpers.BuiltinPluginType, f tFactory, tc *builtinconfig.TransformerConfig) (
 		result []resmap.Transformer, err error) {
@@ -327,6 +395,9 @@ var transformerConfigurators = map[builtinhelpers.BuiltinPluginType]func(
 	builtinhelpers.ReplacementTransformer: func(
 		kt *KustTarget, bpt builtinhelpers.BuiltinPluginType, f tFactory, _ *builtinconfig.TransformerConfig) (
 		result []resmap.Transformer, err error) {
+		if len(kt.kustomization.Replacements) == 0 {
+			return
+		}
 		var c struct {
 			Replacements []types.ReplacementField
 		}

api/internal/target/multitransformer.go

@@ -9,15 +9,15 @@ import (
 
 // multiTransformer contains a list of transformers.
 type multiTransformer struct {
-	transformers []resmap.Transformer
+	transformers []*resmap.TransformerWithProperties
 }
 
 var _ resmap.Transformer = &multiTransformer{}
 
 // newMultiTransformer constructs a multiTransformer.
-func newMultiTransformer(t []resmap.Transformer) resmap.Transformer {
+func newMultiTransformer(t []*resmap.TransformerWithProperties) resmap.Transformer {
 	r := &multiTransformer{
-		transformers: make([]resmap.Transformer, len(t)),
+		transformers: make([]*resmap.TransformerWithProperties, len(t)),
 	}
 	copy(r.transformers, t)
 	return r
@@ -30,6 +30,11 @@ func (o *multiTransformer) Transform(m resmap.ResMap) error {
 		if err := t.Transform(m); err != nil {
 			return err
 		}
+		if t.Origin != nil {
+			if err := m.AddTransformerAnnotation(t.Origin); err != nil {
+				return err
+			}
+		}
 		m.DropEmpties()
 	}
 	return nil

api/internal/target/vars_test.go

@@ -8,7 +8,6 @@ import (
 	"strings"
 	"testing"
 
-	"sigs.k8s.io/kustomize/api/resource"
 	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
 	"sigs.k8s.io/kustomize/api/types"
 	"sigs.k8s.io/kustomize/kyaml/resid"
@@ -66,7 +65,7 @@ vars:
       apiVersion: v300
 `)
 	ra, err := makeAndLoadKustTarget(
-		t, th.GetFSys(), "/app").AccumulateTarget(&resource.Origin{})
+		t, th.GetFSys(), "/app").AccumulateTarget()
 	if err != nil {
 		t.Fatalf("Err: %v", err)
 	}
@@ -121,7 +120,7 @@ resources:
 `)
 
 	ra, err := makeAndLoadKustTarget(
-		t, th.GetFSys(), "/app/overlays/o2").AccumulateTarget(&resource.Origin{})
+		t, th.GetFSys(), "/app/overlays/o2").AccumulateTarget()
 	if err != nil {
 		t.Fatalf("Err: %v", err)
 	}
@@ -178,7 +177,7 @@ resources:
 - ../o1
 `)
 	_, err := makeAndLoadKustTarget(
-		t, th.GetFSys(), "/app/overlays/o2").AccumulateTarget(&resource.Origin{})
+		t, th.GetFSys(), "/app/overlays/o2").AccumulateTarget()
 	if err == nil {
 		t.Fatalf("expected var collision")
 	}

api/internal/utils/annotations.go

@@ -3,6 +3,7 @@ package utils
 import "sigs.k8s.io/kustomize/api/konfig"
 
 const (
+	// build annotations
 	BuildAnnotationPreviousKinds      = konfig.ConfigAnnoDomain + "/previousKinds"
 	BuildAnnotationPreviousNames      = konfig.ConfigAnnoDomain + "/previousNames"
 	BuildAnnotationPrefixes           = konfig.ConfigAnnoDomain + "/prefixes"
@@ -17,7 +18,9 @@ const (
 	BuildAnnotationAllowNameChange = konfig.ConfigAnnoDomain + "/allowNameChange"
 	BuildAnnotationAllowKindChange = konfig.ConfigAnnoDomain + "/allowKindChange"
 
-	OriginAnnotation = "config.kubernetes.io/origin"
+	// for keeping track of origin and transformer data
+	OriginAnnotationKey      = "config.kubernetes.io/origin"
+	TransformerAnnotationKey = "alpha.config.kubernetes.io/transformations"
 
 	Enabled = "enabled"
 )

api/konfig/builtinpluginconsts/defaultconfig.go

@@ -11,6 +11,7 @@ import (
 func GetDefaultFieldSpecs() []byte {
 	configData := [][]byte{
 		[]byte(namePrefixFieldSpecs),
+		[]byte(nameSuffixFieldSpecs),
 		[]byte(commonLabelFieldSpecs),
 		[]byte(commonAnnotationFieldSpecs),
 		[]byte(namespaceFieldSpecs),
@@ -27,6 +28,7 @@ func GetDefaultFieldSpecs() []byte {
 func GetDefaultFieldSpecsAsMap() map[string]string {
 	result := make(map[string]string)
 	result["nameprefix"] = namePrefixFieldSpecs
+	result["namesuffix"] = nameSuffixFieldSpecs
 	result["commonlabels"] = commonLabelFieldSpecs
 	result["commonannotations"] = commonAnnotationFieldSpecs
 	result["namespace"] = namespaceFieldSpecs

api/konfig/builtinpluginconsts/namereference.go

@@ -3,6 +3,7 @@
 
 package builtinpluginconsts
 
+// LINT.IfChange
 const (
 	nameReferenceFieldSpecs = `
 nameReference:
@@ -49,6 +50,16 @@ nameReference:
     kind: Pod
   - path: template/spec/volumes/configMap/name
     kind: PodTemplate
+  - path: template/spec/containers/env/valueFrom/configMapKeyRef/name
+    kind: PodTemplate
+  - path: template/spec/initContainers/env/valueFrom/configMapKeyRef/name
+    kind: PodTemplate
+  - path: template/spec/containers/envFrom/configMapRef/name
+    kind: PodTemplate
+  - path: template/spec/initContainers/envFrom/configMapRef/name
+    kind: PodTemplate
+  - path: template/spec/volumes/projected/sources/configMap/name
+    kind: PodTemplate
   - path: spec/template/spec/volumes/configMap/name
     kind: Deployment
   - path: spec/template/spec/containers/env/valueFrom/configMapKeyRef/name
@@ -154,6 +165,20 @@ nameReference:
   - path: spec/volumes/projected/sources/secret/name
     version: v1
     kind: Pod
+  - path: template/spec/volumes/secret/secretName
+    kind: PodTemplate
+  - path: template/spec/containers/env/valueFrom/secretKeyRef/name
+    kind: PodTemplate
+  - path: template/spec/initContainers/env/valueFrom/secretKeyRef/name
+    kind: PodTemplate
+  - path: template/spec/containers/envFrom/secretRef/name
+    kind: PodTemplate
+  - path: template/spec/initContainers/envFrom/secretRef/name
+    kind: PodTemplate
+  - path: template/spec/imagePullSecrets/name
+    kind: PodTemplate
+  - path: template/spec/volumes/projected/sources/secret/name
+    kind: PodTemplate
   - path: spec/template/spec/volumes/secret/secretName
     kind: Deployment
   - path: spec/template/spec/containers/env/valueFrom/secretKeyRef/name
@@ -398,3 +423,5 @@ nameReference:
     kind: Ingress
 `
 )
+
+// LINT.ThenChange(/examples/transformerconfigs/README.md)

api/konfig/builtinpluginconsts/namesuffix.go

@@ -0,0 +1,11 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package builtinpluginconsts
+
+const (
+	nameSuffixFieldSpecs = `
+nameSuffix:
+- path: metadata/name
+`
+)

api/krusty/basic_io_test.go

@@ -6,6 +6,7 @@ package krusty_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/api/internal/kusterr"
 	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
 )
 
@@ -80,3 +81,35 @@ spec:
   clusterIP: None
 `)
 }
+
+//test for https://github.com/kubernetes-sigs/kustomize/issues/3812#issuecomment-862339267
+func TestBasicIO3812(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK(".", `
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - service.yaml
+`)
+
+	th.WriteF("service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: kapacitor
+  labels:
+    app.kubernetes.io/name: tick-kapacitor
+spec:
+  selector:
+    app.kubernetes.io/name: tick-kapacitor
+    - name: http
+      port: 9092
+      protocol: TCP
+  type: ClusterIP
+`)
+
+	err := th.RunWithErr(".", th.MakeDefaultOptions())
+	if !kusterr.IsMalformedYAMLError(err) {
+		t.Fatalf("unexpected error: %q", err)
+	}
+}

api/krusty/blankvalues_test.go

@@ -0,0 +1,49 @@
+package krusty_test
+
+import (
+	"strings"
+	"testing"
+
+	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
+)
+
+// test for https://github.com/kubernetes-sigs/kustomize/issues/4240
+func TestBlankNamespace4240(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK(".", `
+resources:
+- resource.yaml
+`)
+
+	th.WriteF("resource.yaml", `
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: test
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: test
+rules: []
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: test
+subjects:
+- kind: ServiceAccount
+  name: test
+  namespace:
+roleRef:
+  kind: Role
+  name: test
+  apiGroup: rbac.authorization.k8s.io	
+`)
+
+	err := th.RunWithErr(".", th.MakeDefaultOptions())
+	if !strings.Contains(err.Error(), "Invalid Input: namespace is blank for resource") {
+		t.Fatalf("unexpected error: %q", err)
+	}
+}

api/krusty/buildmetadata_test.go

@@ -1,265 +0,0 @@
-// Copyright 2019 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package krusty_test
-
-import (
-	"testing"
-
-	_ "sigs.k8s.io/kustomize/api/krusty"
-	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
-)
-
-func TestAnnoOriginLocalFiles(t *testing.T) {
-	th := kusttest_test.MakeHarness(t)
-	th.WriteF("service.yaml", `
-apiVersion: v1
-kind: Service
-metadata:
-  name: myService
-spec:
-  ports:
-  - port: 7002
-`)
-	th.WriteK(".", `
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-resources:
-- service.yaml
-buildMetadata: [originAnnotations]
-`)
-	options := th.MakeDefaultOptions()
-	m := th.Run(".", options)
-	th.AssertActualEqualsExpected(m, `
-apiVersion: v1
-kind: Service
-metadata:
-  annotations:
-    config.kubernetes.io/origin: |
-      path: service.yaml
-  name: myService
-spec:
-  ports:
-  - port: 7002
-`)
-}
-
-func TestAnnoOriginLocalFilesWithOverlay(t *testing.T) {
-	th := kusttest_test.MakeHarness(t)
-	th.WriteK("base", `
-namePrefix: b-
-resources:
-- namespace.yaml
-- role.yaml
-- service.yaml
-- deployment.yaml
-`)
-	th.WriteF("base/service.yaml", `
-apiVersion: v1
-kind: Service
-metadata:
-  name: myService
-`)
-	th.WriteF("base/namespace.yaml", `
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: myNs
-`)
-	th.WriteF("base/role.yaml", `
-apiVersion: v1
-kind: Role
-metadata:
-  name: myRole
-`)
-	th.WriteF("base/deployment.yaml", `
-apiVersion: v1
-kind: Deployment
-metadata:
-  name: myDep
-`)
-	th.WriteK("prod", `
-namePrefix: p-
-resources:
-- ../base
-- service.yaml
-- namespace.yaml
-buildMetadata: [originAnnotations]
-`)
-	th.WriteF("prod/service.yaml", `
-apiVersion: v1
-kind: Service
-metadata:
-  name: myService2
-`)
-	th.WriteF("prod/namespace.yaml", `
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: myNs2
-`)
-	m := th.Run("prod", th.MakeDefaultOptions())
-	th.AssertActualEqualsExpected(m, `
-apiVersion: v1
-kind: Namespace
-metadata:
-  annotations:
-    config.kubernetes.io/origin: |
-      path: ../base/namespace.yaml
-  name: myNs
----
-apiVersion: v1
-kind: Role
-metadata:
-  annotations:
-    config.kubernetes.io/origin: |
-      path: ../base/role.yaml
-  name: p-b-myRole
----
-apiVersion: v1
-kind: Service
-metadata:
-  annotations:
-    config.kubernetes.io/origin: |
-      path: ../base/service.yaml
-  name: p-b-myService
----
-apiVersion: v1
-kind: Deployment
-metadata:
-  annotations:
-    config.kubernetes.io/origin: |
-      path: ../base/deployment.yaml
-  name: p-b-myDep
----
-apiVersion: v1
-kind: Service
-metadata:
-  annotations:
-    config.kubernetes.io/origin: |
-      path: service.yaml
-  name: p-myService2
----
-apiVersion: v1
-kind: Namespace
-metadata:
-  annotations:
-    config.kubernetes.io/origin: |
-      path: namespace.yaml
-  name: myNs2
-`)
-}
-
-// This is a copy of TestGeneratorBasics in configmaps_test.go,
-// except that we've enabled the addAnnoOrigin option
-// (which doesn't do anything yet).
-// TODO: Generated resources should receive the annotation
-//      config.kubernetes.io/origin: |
-//        generated-by: path/to/kustomization.yaml
-func TestGeneratorWithAnnoOrigin(t *testing.T) {
-	th := kusttest_test.MakeHarness(t)
-	th.WriteK(".", `
-namePrefix: blah-
-configMapGenerator:
-- name: bob
-  literals:
-  - fruit=apple
-  - vegetable=broccoli
-  envs:
-  - foo.env
-  env: bar.env
-  files:
-  - passphrase=phrase.dat
-  - forces.txt
-- name: json
-  literals:
-  - 'v2=[{"path": "var/druid/segment-cache"}]'
-  - >- 
-    druid_segmentCache_locations=[{"path": 
-    "var/druid/segment-cache", 
-    "maxSize": 32000000000, 
-    "freeSpacePercent": 1.0}]
-secretGenerator:
-- name: bob
-  literals:
-  - fruit=apple
-  - vegetable=broccoli
-  envs:
-  - foo.env
-  files:
-  - passphrase=phrase.dat
-  - forces.txt
-  env: bar.env
-`)
-	th.WriteF("foo.env", `
-MOUNTAIN=everest
-OCEAN=pacific
-`)
-	th.WriteF("bar.env", `
-BIRD=falcon
-`)
-	th.WriteF("phrase.dat", `
-Life is short.
-But the years are long.
-Not while the evil days come not.
-`)
-	th.WriteF("forces.txt", `
-gravitational
-electromagnetic
-strong nuclear
-weak nuclear
-`)
-	opts := th.MakeDefaultOptions()
-	m := th.Run(".", opts)
-	th.AssertActualEqualsExpected(
-		m, `
-apiVersion: v1
-data:
-  BIRD: falcon
-  MOUNTAIN: everest
-  OCEAN: pacific
-  forces.txt: |2
-
-    gravitational
-    electromagnetic
-    strong nuclear
-    weak nuclear
-  fruit: apple
-  passphrase: |2
-
-    Life is short.
-    But the years are long.
-    Not while the evil days come not.
-  vegetable: broccoli
-kind: ConfigMap
-metadata:
-  name: blah-bob-g9df72cd5b
----
-apiVersion: v1
-data:
-  druid_segmentCache_locations: '[{"path":  "var/druid/segment-cache",  "maxSize":
-    32000000000,  "freeSpacePercent": 1.0}]'
-  v2: '[{"path": "var/druid/segment-cache"}]'
-kind: ConfigMap
-metadata:
-  name: blah-json-5298bc8g99
----
-apiVersion: v1
-data:
-  BIRD: ZmFsY29u
-  MOUNTAIN: ZXZlcmVzdA==
-  OCEAN: cGFjaWZpYw==
-  forces.txt: |
-    CmdyYXZpdGF0aW9uYWwKZWxlY3Ryb21hZ25ldGljCnN0cm9uZyBudWNsZWFyCndlYWsgbn
-    VjbGVhcgo=
-  fruit: YXBwbGU=
-  passphrase: |
-    CkxpZmUgaXMgc2hvcnQuCkJ1dCB0aGUgeWVhcnMgYXJlIGxvbmcuCk5vdCB3aGlsZSB0aG
-    UgZXZpbCBkYXlzIGNvbWUgbm90Lgo=
-  vegetable: YnJvY2NvbGk=
-kind: Secret
-metadata:
-  name: blah-bob-58g62h555c
-type: Opaque
-`)
-}

api/krusty/complexcomposition_test.go

@@ -368,7 +368,7 @@ resources:
 		t.Fatalf("Expected resource accumulation error")
 	}
 	if !strings.Contains(
-		err.Error(), "already registered id: apps_v1_StatefulSet|~X|my-sts") {
+		err.Error(), "already registered id: StatefulSet.v1.apps/my-sts.[noNs]") {
 		t.Fatalf("Unexpected err: %v", err)
 	}
 }
@@ -459,7 +459,7 @@ resources:
 		t.Fatalf("Expected resource accumulation error")
 	}
 	if !strings.Contains(
-		err.Error(), "already registered id: apps_v1_StatefulSet|~X|my-sts") {
+		err.Error(), "already registered id: StatefulSet.v1.apps/my-sts.[noNs]") {
 		t.Fatalf("Unexpected err: %v", err)
 	}
 }

api/krusty/component_test.go

@@ -551,7 +551,7 @@ components:
 `),
 			},
 			runPath:       "filesincomponents",
-			expectedError: "'/filesincomponents/stub.yaml' must be a directory to be a root",
+			expectedError: "'/filesincomponents/stub.yaml' must be a directory so that it can used as a build root",
 		},
 		"invalid-component-api-version": {
 			input: []FileGen{writeTestBase, writeOverlayProd,
@@ -589,7 +589,7 @@ components:
 - ../comp-b`),
 			},
 			runPath:       "prod",
-			expectedError: "may not add resource with an already registered id: ~G_v1_Deployment|~X|proxy",
+			expectedError: "may not add resource with an already registered id: Deployment.v1.[noGrp]/proxy.[noNs]",
 		},
 		"components-cannot-add-the-same-base": {
 			input: []FileGen{writeTestBase,
@@ -608,7 +608,7 @@ components:
 - ../comp-b`),
 			},
 			runPath:       "prod",
-			expectedError: "may not add resource with an already registered id: ~G_v1_Deployment|~X|storefront",
+			expectedError: "may not add resource with an already registered id: Deployment.v1.[noGrp]/storefront.[noNs]",
 		},
 		"components-cannot-add-bases-containing-the-same-resource": {
 			input: []FileGen{writeTestBase,
@@ -639,7 +639,7 @@ components:
 - ../comp-b`),
 			},
 			runPath:       "prod",
-			expectedError: "may not add resource with an already registered id: ~G_v1_Deployment|~X|proxy",
+			expectedError: "may not add resource with an already registered id: Deployment.v1.[noGrp]/proxy.[noNs]",
 		},
 	}
 

api/krusty/customconfigofbuiltinplugin_test.go

@@ -6,6 +6,8 @@ package krusty_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/api/types"
+
 	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
 )
 
@@ -13,8 +15,8 @@ import (
 // This is a NamePrefixer that touches Deployments
 // and Services exclusively.
 func TestCustomNamePrefixer(t *testing.T) {
-	th := kusttest_test.MakeEnhancedHarness(t).
-		PrepBuiltin("PrefixSuffixTransformer")
+	th := kusttest_test.MakeEnhancedHarness(t)
+	th.GetPluginConfig().BpLoadingOptions = types.BploUseStaticallyLinked
 	defer th.Reset()
 
 	th.WriteK(".", `

api/krusty/customconfigreusable_test.go

@@ -7,6 +7,7 @@ import (
 	"testing"
 
 	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
+	"sigs.k8s.io/kustomize/api/types"
 )
 
 // Demo custom configuration as a base.
@@ -15,9 +16,9 @@ import (
 // kustomizations.
 func TestReusableCustomTransformers(t *testing.T) {
 	th := kusttest_test.MakeEnhancedHarness(t).
-		PrepBuiltin("PrefixSuffixTransformer").
 		PrepBuiltin("AnnotationsTransformer").
 		PrepBuiltin("LabelTransformer")
+	th.GetPluginConfig().BpLoadingOptions = types.BploUseStaticallyLinked
 	defer th.Reset()
 
 	// First write three custom configurations for builtin plugins.

api/krusty/diamondcomposition_test.go

@@ -141,7 +141,7 @@ resources:
 		t.Fatalf("Expected resource accumulation error")
 	}
 	if !strings.Contains(
-		err.Error(), "already registered id: apps_v1_Deployment|~X|my-deployment") {
+		err.Error(), "already registered id: Deployment.v1.apps/my-deployment.[noNs]") {
 		t.Fatalf("Unexpected err: %v", err)
 	}
 }

api/krusty/helmchartinflationgenerator_test.go

@@ -26,7 +26,6 @@ type: Opaque
 apiVersion: v1
 kind: Service
 metadata:
-  annotations: {}
   labels:
     app: test-minecraft
     chart: minecraft-3.1.3

api/krusty/kustomizer.go

@@ -7,9 +7,10 @@ import (
 	"fmt"
 	"path/filepath"
 
-	"sigs.k8s.io/kustomize/api/builtins"
+	"sigs.k8s.io/kustomize/api/internal/builtins"
 	pLdr "sigs.k8s.io/kustomize/api/internal/plugins/loader"
 	"sigs.k8s.io/kustomize/api/internal/target"
+	"sigs.k8s.io/kustomize/api/internal/utils"
 	"sigs.k8s.io/kustomize/api/konfig"
 	fLdr "sigs.k8s.io/kustomize/api/loader"
 	"sigs.k8s.io/kustomize/api/provenance"
@@ -95,7 +96,7 @@ func (b *Kustomizer) Run(
 			return nil, err
 		}
 	}
-	if b.options.AddManagedbyLabel {
+	if b.options.AddManagedbyLabel || utils.StringSliceContains(kt.Kustomization().BuildMetadata, types.ManagedByLabelOption) {
 		t := builtins.LabelTransformerPlugin{
 			Labels: map[string]string{
 				konfig.ManagedbyLabelKey: fmt.Sprintf("kustomize-%s", provenance.GetProvenance().Semver()),
@@ -111,5 +112,11 @@ func (b *Kustomizer) Run(
 		}
 	}
 	m.RemoveBuildAnnotations()
+	if !utils.StringSliceContains(kt.Kustomization().BuildMetadata, types.OriginAnnotations) {
+		m.RemoveOriginAnnotations()
+	}
+	if !utils.StringSliceContains(kt.Kustomization().BuildMetadata, types.TransformerAnnotations) {
+		m.RemoveTransformerAnnotations()
+	}
 	return m, nil
 }

api/krusty/legacy_order_test.go

@@ -0,0 +1,62 @@
+package krusty_test
+
+import (
+	"testing"
+
+	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
+)
+
+func TestIssue4388(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK(".", `
+resources:
+- resources.yaml
+`)
+	th.WriteF("resources.yaml", `
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: testing
+data:
+  key: value
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: testing-one
+data:
+  key: value
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: testing-two
+data:
+  key: value
+`)
+	opts := th.MakeDefaultOptions()
+	opts.DoLegacyResourceSort = true
+	m := th.Run(".", opts)
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+data:
+  key: value
+kind: ConfigMap
+metadata:
+  name: testing
+---
+apiVersion: v1
+data:
+  key: value
+kind: ConfigMap
+metadata:
+  name: testing-one
+---
+apiVersion: v1
+data:
+  key: value
+kind: ConfigMap
+metadata:
+  name: testing-two
+`)
+}

api/krusty/legacyprefixsuffixtransformer_test.go

@@ -0,0 +1,41 @@
+// Copyright 2021 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package krusty_test
+
+import (
+	"testing"
+
+	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
+)
+
+func TestLegacyPrefixSuffixTransformer(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK(".", `
+resources:
+- service.yaml
+transformers:
+- |-
+  apiVersion: builtin
+  kind: PrefixSuffixTransformer
+  metadata:
+    name: notImportantHere
+  prefix: baked-
+  suffix: -pie
+  fieldSpecs:
+  - path: metadata/name
+`)
+	th.WriteF("service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: apple
+`)
+	m := th.Run(".", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+kind: Service
+metadata:
+  name: baked-apple-pie
+`)
+}

api/krusty/managedbylabel_test.go

@@ -9,28 +9,7 @@ import (
 	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
 )
 
-func TestAddManagedbyLabel(t *testing.T) {
-	th := kusttest_test.MakeHarness(t)
-	th.WriteF("service.yaml", `
-apiVersion: v1
-kind: Service
-metadata:
-  name: myService
-spec:
-  ports:
-  - port: 7002
-`)
-	th.WriteK(".", `
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-resources:
-- service.yaml
-`)
-	options := th.MakeDefaultOptions()
-	options.AddManagedbyLabel = true
-	m := th.Run(".", options)
-	th.AssertActualEqualsExpected(m, `
-apiVersion: v1
+const expected = `apiVersion: v1
 kind: Service
 metadata:
   labels:
@@ -39,5 +18,51 @@ metadata:
 spec:
   ports:
   - port: 7002
+`
+
+func TestAddManagedbyLabel(t *testing.T) {
+	tests := []struct {
+		kustFile      string
+		managedByFlag bool
+		expected      string
+	}{
+		{
+			kustFile: `
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- service.yaml
+`,
+			managedByFlag: true,
+			expected:      expected,
+		},
+		{
+			kustFile: `
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- service.yaml
+buildMetadata: [managedByLabel]
+`,
+			managedByFlag: false,
+			expected:      expected,
+		},
+	}
+	for _, tc := range tests {
+		th := kusttest_test.MakeHarness(t)
+		th.WriteF("service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: myService
+spec:
+  ports:
+  - port: 7002
 `)
+		th.WriteK(".", tc.kustFile)
+		options := th.MakeDefaultOptions()
+		options.AddManagedbyLabel = tc.managedByFlag
+		m := th.Run(".", options)
+		th.AssertActualEqualsExpected(m, tc.expected)
+	}
 }

api/krusty/namereference_test.go

@@ -531,3 +531,58 @@ metadata:
   name: secret-example-7hf4fh868h
 `)
 }
+
+func TestUnrelatedNameReferenceReplacement_Issue4254_Issue3418(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+
+	// The cluster-autoscaler lease name should not be changed.
+	th.WriteF("role.yaml", `
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: cluster-autoscaler
+rules:
+- apiGroups: ["coordination.k8s.io"]
+  resources: ["leases"]
+  resourceNames: ["cluster-autoscaler"]
+  verbs: ["get","update"]
+`)
+
+	th.WriteK(".", `
+resources:
+- role.yaml
+configMapGenerator:
+- name: cluster-autoscaler
+  namespace: kube-system
+  literals:
+  - AWS_REGION="us-east-1"
+`)
+	// The resourceNames for the leases resource in the ClusterRole should NOT be
+	// updated with the name suffix, because it's not targeting the generated
+	// configmap. The value at rules[0].resourceNames[0] is currently incorrect.
+	m := th.Run(".", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, `
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: cluster-autoscaler
+rules:
+- apiGroups:
+  - coordination.k8s.io
+  resourceNames:
+  - cluster-autoscaler-h8mmcct52k
+  resources:
+  - leases
+  verbs:
+  - get
+  - update
+---
+apiVersion: v1
+data:
+  AWS_REGION: us-east-1
+kind: ConfigMap
+metadata:
+  name: cluster-autoscaler-h8mmcct52k
+  namespace: kube-system
+`)
+}

api/krusty/remoteload_test.go

@@ -4,12 +4,15 @@
 package krusty_test
 
 import (
+	"fmt"
+	"net/http"
 	"path/filepath"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"sigs.k8s.io/kustomize/api/internal/utils"
 	"sigs.k8s.io/kustomize/api/krusty"
+	"sigs.k8s.io/kustomize/api/loader"
 	"sigs.k8s.io/kustomize/kyaml/filesys"
 )
 
@@ -74,6 +77,91 @@ spec:
 	assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
 }
 
+func TestRemoteResourceGitHTTP(t *testing.T) {
+	output := `apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    app: myapp
+  name: dev-myapp-pod
+spec:
+  containers:
+  - image: nginx:1.7.9
+    name: nginx
+`
+	tests := []struct {
+		input []byte
+	}{
+		{
+			input: []byte(`
+resources:
+- https://github.com/kubernetes-sigs/kustomize/examples/multibases/dev/?ref=v1.0.6
+`),
+		},
+		{
+			input: []byte(`
+resources:
+- https://github.com/kubernetes-sigs/kustomize//examples/multibases/dev/?ref=v1.0.6
+`),
+		},
+		{
+			input: []byte(`
+resources:
+- git::https://github.com/kubernetes-sigs/kustomize/examples/multibases/dev/?ref=v1.0.6
+`),
+		},
+		{
+			input: []byte(`
+resources:
+- git::https://github.com/kubernetes-sigs/kustomize//examples/multibases/dev/?ref=v1.0.6
+`),
+		},
+	}
+
+	for _, test := range tests {
+		fSys := filesys.MakeFsOnDisk()
+		b := krusty.MakeKustomizer(krusty.MakeDefaultOptions())
+		tmpDir, err := filesys.NewTmpConfirmedDir()
+		assert.NoError(t, err)
+		assert.NoError(t, fSys.WriteFile(filepath.Join(tmpDir.String(), "kustomization.yaml"), test.input))
+		m, err := b.Run(fSys, tmpDir.String())
+		if utils.IsErrTimeout(err) {
+			// Don't fail on timeouts.
+			t.SkipNow()
+		}
+		assert.NoError(t, err)
+		yml, err := m.AsYaml()
+		assert.NoError(t, err)
+		assert.Equal(t, output, string(yml))
+		assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
+	}
+}
+
+func TestRemoteResourceWithHTTPError(t *testing.T) {
+	fSys := filesys.MakeFsOnDisk()
+	b := krusty.MakeKustomizer(krusty.MakeDefaultOptions())
+	tmpDir, err := filesys.NewTmpConfirmedDir()
+	assert.NoError(t, err)
+
+	url404 := "https://github.com/thisisa404.yaml"
+	kusto := filepath.Join(tmpDir.String(), "kustomization.yaml")
+	assert.NoError(t, fSys.WriteFile(kusto, []byte(fmt.Sprintf(`
+resources:
+- %s
+`, url404))))
+
+	_, err = b.Run(fSys, tmpDir.String())
+	if utils.IsErrTimeout(err) {
+		// Don't fail on timeouts.
+		t.SkipNow()
+	}
+
+	httpErr := fmt.Errorf("%w: status code %d (%s)", loader.ErrorHTTP, 404, http.StatusText(404))
+	accuFromErr := fmt.Errorf("accumulating resources from '%s': %w", url404, httpErr)
+	expectedErr := fmt.Errorf("accumulating resources: %w", accuFromErr)
+	assert.EqualErrorf(t, err, expectedErr.Error(), url404)
+}
+
 func TestRemoteResourceAnnoOrigin(t *testing.T) {
 	fSys := filesys.MakeFsOnDisk()
 	b := krusty.MakeKustomizer(krusty.MakeDefaultOptions())

api/krusty/repeatbase_test.go

@@ -128,7 +128,7 @@ spec:
 
 	err := th.RunWithErr("mango", th.MakeDefaultOptions())
 	if !strings.Contains(
-		err.Error(), "multiple matches for Id apps_v1_Deployment|~X|banana; failed to find unique target for patch") {
+		err.Error(), "multiple matches for Id Deployment.v1.apps/banana.[noNs]; failed to find unique target for patch Deployment.v1.apps/banana.[noNs]") {
 		t.Fatalf("Unexpected err: %v", err)
 	}
 

api/krusty/replacementtransformer_test.go

@@ -110,6 +110,67 @@ spec:
 	th.AssertActualEqualsExpected(m, expected)
 }
 
+func TestReplacementsFieldWithPathMultiple(t *testing.T) {
+	th := kusttest_test.MakeEnhancedHarness(t)
+	defer th.Reset()
+
+	th.WriteK(".", `
+resources:
+- resource.yaml
+
+replacements:
+- path: replacement.yaml
+`)
+	th.WriteF("replacement.yaml", `
+- source: 
+    kind: Deployment
+    fieldPath: spec.template.spec.containers.0.image
+  targets:
+  - select:
+      kind: Deployment
+    fieldPaths: 
+    - spec.template.spec.containers.1.image
+- source: 
+    kind: Deployment
+    fieldPath: spec.template.spec.containers.0.name
+  targets:
+  - select:
+      kind: Deployment
+    fieldPaths: 
+    - spec.template.spec.containers.1.name
+`)
+	th.WriteF("resource.yaml", `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: foobar:1
+        name: replaced-with-digest
+      - image: postgres:1.8.0
+        name: postgresdb
+`)
+	expected := `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: foobar:1
+        name: replaced-with-digest
+      - image: foobar:1
+        name: replaced-with-digest
+`
+	m := th.Run(".", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, expected)
+}
+
 func TestReplacementTransformerWithDiamondShape(t *testing.T) {
 	th := kusttest_test.MakeEnhancedHarness(t)
 	defer th.Reset()

api/krusty/transformerannotation_test.go

@@ -0,0 +1,495 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package krusty_test
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"sigs.k8s.io/kustomize/api/internal/utils"
+	"sigs.k8s.io/kustomize/api/krusty"
+	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
+	"sigs.k8s.io/kustomize/kyaml/filesys"
+)
+
+const generateDeploymentWithOriginDotSh = `#!/bin/sh
+
+cat <<EOF
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx
+  labels:
+    app: nginx
+  annotations:
+    tshirt-size: small # this injects the resource reservations
+    config.kubernetes.io/origin: |
+      path: somefile.yaml
+spec:
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx
+EOF
+`
+
+func TestAnnoTransformerBuiltinLocal(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteF("service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: myService
+spec:
+  ports:
+  - port: 7002
+`)
+	th.WriteK(".", `
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- service.yaml
+buildMetadata: [transformerAnnotations]
+namePrefix: foo-
+`)
+	options := th.MakeDefaultOptions()
+	m := th.Run(".", options)
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+kind: Service
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+  name: foo-myService
+spec:
+  ports:
+  - port: 7002
+`)
+}
+
+func TestAnnoOriginAndTransformerBuiltinLocal(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteF("service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: myService
+spec:
+  ports:
+  - port: 7002
+`)
+	th.WriteK(".", `
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- service.yaml
+buildMetadata: [originAnnotations, transformerAnnotations]
+namePrefix: foo-
+`)
+	options := th.MakeDefaultOptions()
+	m := th.Run(".", options)
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+kind: Service
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+    config.kubernetes.io/origin: |
+      path: service.yaml
+  name: foo-myService
+spec:
+  ports:
+  - port: 7002
+`)
+}
+
+func TestAnnoTransformerLocalFilesWithOverlay(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK("base", `
+namePrefix: b-
+resources:
+- namespace.yaml
+- role.yaml
+- service.yaml
+- deployment.yaml
+`)
+	th.WriteF("base/service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: myService
+`)
+	th.WriteF("base/namespace.yaml", `
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: myNs
+`)
+	th.WriteF("base/role.yaml", `
+apiVersion: v1
+kind: Role
+metadata:
+  name: myRole
+`)
+	th.WriteF("base/deployment.yaml", `
+apiVersion: v1
+kind: Deployment
+metadata:
+  name: myDep
+`)
+	th.WriteK("prod", `
+namePrefix: p-
+resources:
+- ../base
+- service.yaml
+- namespace.yaml
+buildMetadata: [transformerAnnotations]
+`)
+	th.WriteF("prod/service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: myService2
+`)
+	th.WriteF("prod/namespace.yaml", `
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: myNs2
+`)
+	m := th.Run("prod", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+kind: Namespace
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: ../base/kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+  name: myNs
+---
+apiVersion: v1
+kind: Role
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: ../base/kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+  name: p-b-myRole
+---
+apiVersion: v1
+kind: Service
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: ../base/kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+  name: p-b-myService
+---
+apiVersion: v1
+kind: Deployment
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: ../base/kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+  name: p-b-myDep
+---
+apiVersion: v1
+kind: Service
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+  name: p-myService2
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+  name: myNs2
+`)
+}
+
+func TestAnnoOriginRemoteBuiltinTransformer(t *testing.T) {
+	fSys := filesys.MakeFsOnDisk()
+	b := krusty.MakeKustomizer(krusty.MakeDefaultOptions())
+	tmpDir, err := filesys.NewTmpConfirmedDir()
+	assert.NoError(t, err)
+	assert.NoError(t, fSys.WriteFile(filepath.Join(tmpDir.String(), "kustomization.yaml"), []byte(`
+resources:
+- github.com/kubernetes-sigs/kustomize/examples/multibases/production/?ref=v1.0.6
+buildMetadata: [transformerAnnotations]
+`)))
+	m, err := b.Run(
+		fSys,
+		tmpDir.String())
+	if utils.IsErrTimeout(err) {
+		// Don't fail on timeouts.
+		t.SkipNow()
+	}
+	if !assert.NoError(t, err) {
+		t.FailNow()
+	}
+	yml, err := m.AsYaml()
+	assert.NoError(t, err)
+	assert.Equal(t, `apiVersion: v1
+kind: Pod
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - repo: https://github.com/kubernetes-sigs/kustomize
+        ref: v1.0.6
+        configuredIn: examples/multibases/production/kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: PrefixTransformer
+  labels:
+    app: myapp
+  name: prod-myapp-pod
+spec:
+  containers:
+  - image: nginx:1.7.9
+    name: nginx
+`, string(yml))
+	assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
+}
+
+func TestAnnoTransformerBuiltinInline(t *testing.T) {
+	th := kusttest_test.MakeEnhancedHarness(t)
+	defer th.Reset()
+
+	th.WriteF("resource.yaml", `
+apiVersion: apps/v1
+kind: ConfigMap
+metadata:
+  name: whatever
+data: {}
+`)
+	th.WriteK(".", `
+resources:
+- resource.yaml
+transformers:
+- |-
+  apiVersion: builtin
+  kind: NamespaceTransformer
+  metadata:
+    name: not-important-to-example
+    namespace: test
+  fieldSpecs:
+  - path: metadata/namespace
+    create: true
+buildMetadata: [transformerAnnotations]
+`)
+
+	expected := `
+apiVersion: apps/v1
+data: {}
+kind: ConfigMap
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          apiVersion: builtin
+          kind: NamespaceTransformer
+          name: not-important-to-example
+          namespace: test
+  name: whatever
+  namespace: test
+`
+	m := th.Run(".", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, expected)
+}
+
+func TestAnnoOriginCustomInlineTransformer(t *testing.T) {
+	fSys := filesys.MakeFsOnDisk()
+
+	th := kusttest_test.MakeHarnessWithFs(t, fSys)
+	o := th.MakeOptionsPluginsEnabled()
+	o.PluginConfig.FnpLoadingOptions.EnableExec = true
+
+	tmpDir, err := filesys.NewTmpConfirmedDir()
+	assert.NoError(t, err)
+	th.WriteK(tmpDir.String(), `
+transformers:
+- |-
+  kind: executable
+  metadata:
+    name: demo
+    annotations:
+      config.kubernetes.io/function: |
+        exec:
+          path: ./generateDeployment.sh
+  spec:
+buildMetadata: [transformerAnnotations]
+`)
+
+	// generateDeploymentWithOriginDotSh creates a resource that already has an origin annotation,
+	// which will cause kustomize to record the plugin origin data as a transformation
+	th.WriteF(filepath.Join(tmpDir.String(), "generateDeployment.sh"), generateDeploymentWithOriginDotSh)
+
+	assert.NoError(t, os.Chmod(filepath.Join(tmpDir.String(), "generateDeployment.sh"), 0777))
+	th.WriteF(filepath.Join(tmpDir.String(), "gener.yaml"), `
+kind: executable
+metadata:
+  name: demo
+  annotations:
+    config.kubernetes.io/function: |
+      exec:
+        path: ./generateDeployment.sh
+spec:
+`)
+
+	m := th.Run(tmpDir.String(), o)
+	assert.NoError(t, err)
+	yml, err := m.AsYaml()
+	assert.NoError(t, err)
+	assert.Equal(t, `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: kustomization.yaml
+        configuredBy:
+          kind: executable
+          name: demo
+    tshirt-size: small
+  labels:
+    app: nginx
+  name: nginx
+spec:
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - image: nginx
+        name: nginx
+`, string(yml))
+	assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
+}
+
+func TestAnnoOriginCustomExecTransformerWithOverlay(t *testing.T) {
+	fSys := filesys.MakeFsOnDisk()
+
+	th := kusttest_test.MakeHarnessWithFs(t, fSys)
+	o := th.MakeOptionsPluginsEnabled()
+	o.PluginConfig.FnpLoadingOptions.EnableExec = true
+
+	tmpDir, err := filesys.NewTmpConfirmedDir()
+	assert.NoError(t, err)
+	base := filepath.Join(tmpDir.String(), "base")
+	prod := filepath.Join(tmpDir.String(), "prod")
+	assert.NoError(t, fSys.Mkdir(base))
+	assert.NoError(t, fSys.Mkdir(prod))
+	th.WriteK(base, `
+transformers:
+- gener.yaml
+`)
+	th.WriteK(prod, `
+resources:
+- ../base
+buildMetadata: [transformerAnnotations]
+`)
+	th.WriteF(filepath.Join(base, "gener.yaml"), `
+kind: executable
+metadata:
+  name: demo
+  annotations:
+    config.kubernetes.io/function: |
+      exec:
+        path: ./generateDeployment.sh
+spec:
+`)
+	// generateDeploymentWithOriginDotSh creates a resource that already has an origin annotation,
+	// which will cause kustomize to record the plugin origin data as a transformation
+	th.WriteF(filepath.Join(base, "generateDeployment.sh"), generateDeploymentWithOriginDotSh)
+	assert.NoError(t, os.Chmod(filepath.Join(base, "generateDeployment.sh"), 0777))
+
+	m := th.Run(prod, o)
+	assert.NoError(t, err)
+	yml, err := m.AsYaml()
+	assert.NoError(t, err)
+	assert.Equal(t, `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  annotations:
+    alpha.config.kubernetes.io/transformations: |
+      - configuredIn: ../base/gener.yaml
+        configuredBy:
+          kind: executable
+          name: demo
+    tshirt-size: small
+  labels:
+    app: nginx
+  name: nginx
+spec:
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - image: nginx
+        name: nginx
+`, string(yml))
+	assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
+}

api/loader/errors.go

@@ -0,0 +1,5 @@
+package loader
+
+import "fmt"
+
+var ErrorHTTP = fmt.Errorf("HTTP Error")