Merge pull request #4645 from natasha41575/pinToCmdConfig

Update cmd/config to v0.10.7

.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
 -->
 

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+      interval: "weekly"

.github/workflows/go.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
 
   lint:
@@ -14,18 +17,21 @@ jobs:
     steps:
 
     - name: Set up Go 1.x
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: ^1.13
+        go-version: ^1.16
       id: go
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
 
     - name: Lint
-      run: ./hack/kyaml-pre-commit.sh
-      env:
-        KUSTOMIZE_DOCKER_E2E: false # don't need to do e2e tests for linting
+      run: make lint
+
+    - name: Verify boilerplate
+      run: make check-license
 
   test-linux:
     name: Test Linux
@@ -33,25 +39,16 @@ jobs:
     steps:
 
       - name: Set up Go 1.x
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
-          go-version: ^1.13
+          go-version: ^1.16
         id: go
 
       - name: Check out code into the Go module directory
         uses: actions/checkout@v2
 
-      - name: Test kyaml
-        run: go test -cover ./...
-        working-directory: ./kyaml
-
-      - name: Test api
-        run: go test -cover ./... -ldflags "-X sigs.k8s.io/kustomize/api/provenance.version=v444.333.222"
-        working-directory: ./api
-
-      - name: Test cmd/config
-        run: go test -cover ./...
-        working-directory: ./cmd/config
+      - name: Test all modules
+        run: make test-unit-non-plugin
         env:
           KUSTOMIZE_DOCKER_E2E: true
 
@@ -61,25 +58,16 @@ jobs:
     steps:
 
       - name: Set up Go 1.x
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
-          go-version: ^1.13
+          go-version: ^1.16
         id: go
 
       - name: Check out code into the Go module directory
         uses: actions/checkout@v2
 
-      - name: Test kyaml
-        run: go test -cover ./...
-        working-directory: ./kyaml
-
-      - name: Test api
-        run: go test -cover ./... -ldflags "-X sigs.k8s.io/kustomize/api/provenance.version=v444.333.222"
-        working-directory: ./api
-
-      - name: Test cmd/config
-        run: go test -cover ./...
-        working-directory: ./cmd/config
+      - name: Test all modules
+        run: make test-unit-non-plugin
         env:
           KUSTOMIZE_DOCKER_E2E: false # docker not installed on mac
 
@@ -89,9 +77,9 @@ jobs:
     steps:
 
       - name: Set up Go 1.x
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
-          go-version: ^1.13
+          go-version: ^1.16
         id: go
 
       - name: Check out code into the Go module directory
@@ -101,13 +89,14 @@ jobs:
         run: go test -cover ./...
         working-directory: ./kyaml
 
-      # TODO: uncomment once Windows tests are passing.
-      # - name: Test api
-      #   run: go test -cover ./... -ldflags "-X sigs.k8s.io/kustomize/api/provenance.version=v444.333.222"
-      #   working-directory: ./api
-
       - name: Test cmd/config
         run: go test -cover ./...
         working-directory: ./cmd/config
         env:
           KUSTOMIZE_DOCKER_E2E: false # docker on windows not working well yet
+
+      # TODO (#4001): replace specific modules above with this once Windows tests are passing.
+      #- name: Test all modules
+      #  run: make test-unit-non-plugin
+      #  env:
+      #    KUSTOMIZE_DOCKER_E2E: false # docker on windows not working well yet

.gitignore

@@ -21,3 +21,13 @@
 *.DS_store
 
 .bin
+
+# Hugo site
+publishedSite/
+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

.golangci-kustomize.yml

@@ -1,50 +0,0 @@
-run:
-  deadline: 5m
-
-linters:
-  disable-all: true
-  enable:
-    - bodyclose
-    - deadcode
-    - depguard
-    # - dogsled
-    - dupl
-    # - errcheck
-    # - funlen
-    # - gochecknoinits
-    - goconst
-    # - gocritic
-    - gocyclo
-    - gofmt
-    - goimports
-    - golint
-    - gosec
-    - gosimple
-    - govet
-    - ineffassign
-    - interfacer
-    - lll
-    - misspell
-    - nakedret
-    # - scopelint
-    - staticcheck
-    - structcheck
-    # stylecheck demands that acronyms not be treated as words
-    # in camelCase, so JsonOp become JSONOp, etc.  Yuck.
-    # - stylecheck
-    - typecheck
-    - unconvert
-    - unparam
-    - unused
-    - varcheck
-    # - whitespace
-
-linters-settings:
-  dupl:
-    threshold: 400
-  lll:
-    line-length: 170
-  gocyclo:
-    min-complexity: 15
-  golint:
-    min-confidence: 0.85

.golangci.yml

@@ -0,0 +1,136 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+run:
+  deadline: 5m
+
+linters:
+  # please, do not use `enable-all`: it's deprecated and will be removed soon.
+  # inverted configuration with `enable-all` and `disable` is not scalable during updates of golangci-lint
+  disable-all: true
+  enable:
+    - asciicheck
+    - bidichk
+    - bodyclose
+    - contextcheck
+#    - cyclop
+    - deadcode
+    - depguard
+    - dogsled
+    - dupl
+    - durationcheck
+    - errcheck
+    - errname
+    - errorlint
+    - exhaustive
+#    - exhaustivestruct
+    - exportloopref
+#    - forbidigo
+    - forcetypeassert
+#    - funlen
+#    - gci
+    - gochecknoglobals
+    - gochecknoinits
+#    - gocognit
+    - goconst
+    - gocritic
+    - gocyclo
+#    - godot
+#    - godox
+    - goerr113
+    - gofmt
+#    - gofumpt
+    - goheader
+    - goimports
+    - gomnd
+    - gomoddirectives
+    - gomodguard
+    - goprintffuncname
+    - gosec
+    - gosimple
+    - govet
+#    - ifshort # too many false positives
+    - importas
+    - ineffassign
+#    - ireturn
+    - lll
+    - makezero
+    - misspell
+    - nakedret
+    - nestif
+    - nilerr
+#    - nilnil
+#    - nlreturn
+#    - noctx
+    - nolintlint
+#    - paralleltest
+    - prealloc
+    - predeclared
+    - promlinter
+    - revive
+    - rowserrcheck
+    - sqlclosecheck
+    - staticcheck
+    - structcheck
+#    - stylecheck
+    - tagliatelle
+    - tenv
+    - testpackage
+    - thelper
+    - tparallel
+    - typecheck
+    - unconvert
+    - unparam
+    - unused
+    - varcheck
+#    - varnamelen
+    - wastedassign
+    - whitespace
+    - wrapcheck
+#    - wsl
+
+linters-settings:
+  dupl:
+    threshold: 400
+  lll:
+    line-length: 170
+  gocyclo:
+    min-complexity: 30
+  revive:
+    rules:
+    - name: var-naming
+      arguments:
+      - [ "ID", "API", "JSON" ] # AllowList
+      - [ ] # DenyList
+  gomoddirectives:
+    replace-local: true
+  gosec:
+    config:
+      G306: "0644"
+  gomnd:
+     ignored-functions:
+     - ioutil.WriteFile
+  wrapcheck:
+    ignoreSigs:
+      # defaults
+      - .Errorf(
+      - errors.New(
+      - errors.Unwrap(
+      - .Wrap(
+      - .Wrapf(
+      - .WithMessage(
+      - .WithMessagef(
+      - .WithStack(
+      # from kyaml's errors package
+      - .WrapPrefixf(
+
+issues:
+  new-from-rev: c94b5d8f2 # enables us to enforce a larger set of linters for new code than pass on existing code
+  max-same-issues: 0
+  exclude-rules:
+    - linters:
+        - revive
+      text: "don't use leading"
+    - linters:
+        - staticcheck
+      text: "SA1019: kioutil.Legacy"

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.

CONTRIBUTING.md

@@ -1,6 +1,25 @@
+[SIG-CLI]: https://github.com/kubernetes/community/tree/master/sig-cli
+[Slack channel]: https://kubernetes.slack.com/messages/kustomize
+[Mailing list]: https://groups.google.com/forum/#!forum/kubernetes-sig-cli
+
+[OWNERS file spec]: https://github.com/kubernetes/community/blob/master/contributors/guide/owners.md
+[Kustomize OWNERS_ALIASES]: https://github.com/kubernetes-sigs/kustomize/blob/8049f7b1af52e8a7ec26faf6cf714f560d0043c5/OWNERS_ALIASES
+[SIG-CLI Teams]: https://github.com/kubernetes/org/blob/main/config/kubernetes-sigs/sig-cli/teams.yaml
+[Github permissions]: https://docs.github.com/en/organizations/managing-access-to-your-organizations-repositories/repository-permission-levels-for-an-organization#repository-access-for-each-permission-level
+
+[Contributor License Agreement]: https://git.k8s.io/community/CLA.md
+[Kubernetes Contributor Guide]: http://git.k8s.io/community/contributors/guide
+[Contributor Cheat Sheet]: https://git.k8s.io/community/contributors/guide/contributor-cheatsheet/README.md
+[CNCF Code of Conduct]: https://github.com/cncf/foundation/blob/master/code-of-conduct.md
+[Kubernetes Community Membership]: https://github.com/kubernetes/community/blob/master/community-membership.md
+
+[Contribution Guide]: https://kubectl.docs.kubernetes.io/contributing/kustomize/
+[MacOS Dev Guide]: https://kubectl.docs.kubernetes.io/contributing/kustomize/mac/
+[Windows Dev Guide]: https://kubectl.docs.kubernetes.io/contributing/kustomize/windows/
+
 # Contributing Guidelines
 
-Welcome to Kubernetes. We are excited about the prospect of you joining our [community](https://github.com/kubernetes/community)! The Kubernetes community abides by the CNCF [code of conduct](code-of-conduct.md). Here is an excerpt:
+Welcome to Kubernetes. We are excited about the prospect of you joining our [community](https://github.com/kubernetes/community)! The Kubernetes community abides by the [CNCF Code of Conduct]. Here is an excerpt:
 
 _As contributors and maintainers of this project, and in the interest of fostering an open and welcoming community, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities._
 
@@ -8,13 +27,22 @@ _As contributors and maintainers of this project, and in the interest of fosteri
 
 Dev guides:
 
-- [Mac](docs/macDevGuide.md)
+- [Contribution Guide]
+- [MacOS Dev Guide]
+- [Windows Dev Guide]
 
-We have full documentation on how to get started contributing here:
+General resources for contributors:
 
-- [Contributor License Agreement](https://git.k8s.io/community/CLA.md) Kubernetes projects require that you sign a Contributor License Agreement (CLA) before we can accept your pull requests
-- [Kubernetes Contributor Guide](http://git.k8s.io/community/contributors/guide) - Main contributor documentation, or you can just jump directly to the [contributing section](http://git.k8s.io/community/contributors/guide#contributing)
-- [Contributor Cheat Sheet](https://git.k8s.io/community/contributors/guide/contributor-cheatsheet/README.md) - Common resources for existing developers
+- [Contributor License Agreement] - Kubernetes projects require that you sign a Contributor License Agreement (CLA) before we can accept your pull requests.
+- [Kubernetes Contributor Guide] - Main contributor documentation.
+- [Contributor Cheat Sheet] - Common resources for existing developers.
+
+Here are some additional ideas to help you get started with Kustomize:
+- Attend a Kustomize Bug Scrub. Check the [SIG-CLI] meetings list to find the next one.
+- Help triage issues by confirming validity and applying the appropriate `kind` label (e.g. comment `/kind bug`).
+- Pick up an issue to fix. Issues with the `help-wanted` label are a good place to start, but you can also look for any issue with the `triage/accepted` label and no assignee. Remember to `/assign` yourself to let others know you're working on it.
+- Help confirm new issues labelled `kind/bug` by reproducing them with the latest release.
+- Support Kustomize users by responding to questions on issues labelled `kind/support` or in the [Slack channel].
 
 ## Mentorship
 
@@ -22,19 +50,22 @@ We have full documentation on how to get started contributing here:
 
 ## Contributor Ladder
 
-Kustomize generally follows the [Kubernetes Community Membership](https://github.com/kubernetes/community/blob/master/community-membership.md) contributor ladder. Roles are as follows:
+Kustomize follows the [Kubernetes Community Membership] contributor ladder. Roles are as follows:
 
-1. Contributor: Anyone who actively contributes code, issues or reviews to the project. There are no Kustomize-specific requirements for this status. All contributors must [sign the CLA](https://github.com/kubernetes/community/tree/master/contributors/guide#prerequisites).
-1. Member/Reviewer: All Kubernetes-SIGs org members have LGTM rights on the Kustomize repo. There are no Kustomize-specific requirements. Kustomize does not currently have any formal reviewers, but the role will be created if there is interest.
-1. Maintainer/Approver: Highly experienced active reviewer and contributor to Kustomize. Has both LTGM and approval rights on the Kustomize repo, as well as [Github "maintain" rights](https://docs.github.com/en/organizations/managing-access-to-your-organizations-repositories/repository-permission-levels-for-an-organization#repository-access-for-each-permission-level).
-1. Admin/Owner: Maintainer who sets technical direction and makes or approves design decisions for the project. Has LGTM and approval rights on the Kustomize repo as well as [Github "admin" rights](https://docs.github.com/en/organizations/managing-access-to-your-organizations-repositories/repository-permission-levels-for-an-organization#repository-access-for-each-permission-level).
+1. Contributor: Anyone who actively contributes code, issues or reviews to the project. All contributors must sign the [Contributor License Agreement].
+1. Reviewer: Contributors with a history of review and authorship on Kustomize. Has LGTM rights on the Kustomize repo (as do all kubernetes-sigs org members). Active contributors are encouraged to join the reviewers list to be automatically pinged on PRs.
+1. Approver: Highly experienced active reviewer and contributor to Kustomize. Has both LTGM and approval rights on the Kustomize repo, as well as "maintain" [Github permissions].
+1. Owner: Approver who sets technical direction and makes or approves design decisions for the project. Has LGTM and approval rights on the Kustomize repo as well as "admin" [Github permissions].
+
+The kyaml module within the Kustomize repo has additional owners following the same ladder.
 
 Administrative notes:
-- Maintainers and admins must be added to the appropriate list both [in the Kustomize repo](https://github.com/kubernetes-sigs/kustomize/blob/8049f7b1af52e8a7ec26faf6cf714f560d0043c5/OWNERS_ALIASES) and [in the community repo](https://github.com/kubernetes/org/blob/main/config/kubernetes-sigs/sig-cli/teams.yaml). If this isn't done, the individual in question will lack either PR approval rights (Kustomize list) or the appropriate Github repository permissions (community list).
-- The spec for the OWNERS file is [in the community repo](https://github.com/kubernetes/community/blob/master/contributors/guide/owners.md).
+
+- The [OWNERS file spec] is a useful resources in making changes.
+- Maintainers and admins must be added to the appropriate lists in both [Kustomize OWNERS_ALIASES] and [SIG-CLI Teams]. If this isn't done, the individual in question will lack either PR approval rights (Kustomize list) or the appropriate Github repository permissions (community list).
 
 
 ## Contact Information
 
-- [Slack channel](https://kubernetes.slack.com/messages/sig-cli)
-- [Mailing list](https://groups.google.com/forum/#!forum/kubernetes-sig-cli)
+- [Slack channel]
+- [Mailing list]

Makefile

@@ -3,13 +3,16 @@
 #
 # Makefile for kustomize CLI and API.
 
+LATEST_V4_RELEASE=v4.5.4
+
 SHELL := /usr/bin/env bash
+GOOS = $(shell go env GOOS)
+GOARCH = $(shell go env GOARCH)
 MYGOBIN = $(shell go env GOBIN)
 ifeq ($(MYGOBIN),)
 MYGOBIN = $(shell go env GOPATH)/bin
 endif
 export PATH := $(MYGOBIN):$(PATH)
-MODULES := '"cmd/config" "api/" "kustomize/" "kyaml/"'
 
 # Provide defaults for REPO_OWNER and REPO_NAME if not present.
 # Typically these values would be provided by Prow.
@@ -21,49 +24,35 @@ ifndef REPO_NAME
 REPO_NAME := "kustomize"
 endif
 
-.PHONY: all
-all: install-tools verify-kustomize
 
-.PHONY: verify-kustomize
-verify-kustomize: \
-	lint-kustomize \
-	test-unit-kustomize-all \
-	test-examples-kustomize-against-HEAD \
-	test-examples-kustomize-against-4.1
+# --- Plugins ---
+include Makefile-plugins.mk
 
-# The following target referenced by a file in
-# https://github.com/kubernetes/test-infra/tree/master/config/jobs/kubernetes-sigs/kustomize
-.PHONY: prow-presubmit-check
-prow-presubmit-check: \
-	install-tools \
-	lint-kustomize \
-	test-multi-module \
-	test-unit-kustomize-all \
-	test-unit-cmd-all \
-	test-go-mod \
-	test-examples-kustomize-against-HEAD \
-	test-examples-kustomize-against-4.1
 
-.PHONY: verify-kustomize-e2e
-verify-kustomize-e2e: test-examples-e2e-kustomize
+# --- Tool management ---
+include Makefile-tools.mk
 
-# Other builds in this repo might want a different linter version.
-# Without one Makefile to rule them all, the different makes
-# cannot assume that golanci-lint is at the version they want.
-# This installs what kustomize wants to use.
-$(MYGOBIN)/golangci-lint-kustomize:
-	rm -f $(CURDIR)/hack/golangci-lint
-	GOBIN=$(CURDIR)/hack go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.23.8
-	mv $(CURDIR)/hack/golangci-lint $(MYGOBIN)/golangci-lint-kustomize
+.PHONY: install-tools
+install-tools: \
+	install-local-tools \
+	install-out-of-tree-tools
 
-$(MYGOBIN)/mdrip:
-	go install github.com/monopole/mdrip@v1.0.2
+.PHONY: uninstall-tools
+uninstall-tools: \
+	uninstall-local-tools \
+	uninstall-out-of-tree-tools
 
-$(MYGOBIN)/stringer:
-	go get golang.org/x/tools/cmd/stringer
+.PHONY: install-local-tools
+install-local-tools: \
+	$(MYGOBIN)/gorepomod \
+	$(MYGOBIN)/k8scopy \
+	$(MYGOBIN)/pluginator
 
-$(MYGOBIN)/goimports:
-	go get golang.org/x/tools/cmd/goimports
+.PHONY: uninstall-local-tools
+uninstall-local-tools:
+	rm -f $(MYGOBIN)/gorepomod
+	rm -f $(MYGOBIN)/k8scopy
+	rm -f $(MYGOBIN)/pluginator
 
 # Build from local source.
 $(MYGOBIN)/gorepomod:
@@ -80,189 +69,93 @@ $(MYGOBIN)/pluginator:
 	cd cmd/pluginator; \
 	go install .
 
-# Build from local source.
-$(MYGOBIN)/prchecker:
-	cd cmd/prchecker; \
-	go install .
+
+# --- Build targets ---
 
 # Build from local source.
 $(MYGOBIN)/kustomize: build-kustomize-api
 	cd kustomize; \
 	go install .
 
-.PHONY: install-tools
-install-tools: \
-	$(MYGOBIN)/goimports \
-	$(MYGOBIN)/golangci-lint-kustomize \
-	$(MYGOBIN)/gorepomod \
-	$(MYGOBIN)/helmV3 \
-	$(MYGOBIN)/k8scopy \
-	$(MYGOBIN)/mdrip \
-	$(MYGOBIN)/pluginator \
-	$(MYGOBIN)/prchecker \
-	$(MYGOBIN)/stringer
-
-### Begin kustomize plugin rules.
-#
-# The rules to deal with builtin plugins are a bit
-# complicated because
-#
-# - Every builtin plugin is a Go plugin -
-#   meaning it gets its own module directory
-#   (outside of the api module) with Go
-#   code in a 'main' package per Go plugin rules.
-# - kustomize locates plugins using the
-#   'apiVersion' and 'kind' fields from the
-#   plugin config file.
-# - k8s wants CamelCase in 'kind' fields.
-# - The module name (the last name in the path)
-#   must be the lowercased 'kind' of the
-#   plugin because Go and related tools
-#   demand lowercase in import paths, but
-#   allow CamelCase in file names.
-# - the generated code must live in the api
-#   module (it's linked into the api).
-
-# Where all generated builtin plugin code should go.
-pGen=api/builtins
-# Where the builtin Go plugin modules live.
-pSrc=plugin/builtin
-
-_builtinplugins = \
-	AnnotationsTransformer.go \
-	ConfigMapGenerator.go \
-	IAMPolicyGenerator.go \
-	HashTransformer.go \
-	ImageTagTransformer.go \
-	LabelTransformer.go \
-	LegacyOrderTransformer.go \
-	NamespaceTransformer.go \
-	PatchJson6902Transformer.go \
-	PatchStrategicMergeTransformer.go \
-	PatchTransformer.go \
-	PrefixSuffixTransformer.go \
-	ReplacementTransformer.go \
-	ReplicaCountTransformer.go \
-	SecretGenerator.go \
-	ValueAddTransformer.go \
-	HelmChartInflationGenerator.go
-
-# Maintaining this explicit list of generated files, and
-# adding it as a dependency to a few targets, to assure
-# they get recreated if deleted.  The rules below on how
-# to make them don't, by themselves, assure they will be
-# recreated if deleted.
-builtinplugins = $(patsubst %,$(pGen)/%,$(_builtinplugins))
-
-# These rules are verbose, but assure that if a source file
-# is modified, the corresponding generated file, and only
-# that file, will be recreated.
-$(pGen)/AnnotationsTransformer.go: $(pSrc)/annotationstransformer/AnnotationsTransformer.go
-$(pGen)/ConfigMapGenerator.go: $(pSrc)/configmapgenerator/ConfigMapGenerator.go
-$(pGen)/GkeSaGenerator.go: $(pSrc)/gkesagenerator/GkeSaGenerator.go
-$(pGen)/HashTransformer.go: $(pSrc)/hashtransformer/HashTransformer.go
-$(pGen)/ImageTagTransformer.go: $(pSrc)/imagetagtransformer/ImageTagTransformer.go
-$(pGen)/LabelTransformer.go: $(pSrc)/labeltransformer/LabelTransformer.go
-$(pGen)/LegacyOrderTransformer.go: $(pSrc)/legacyordertransformer/LegacyOrderTransformer.go
-$(pGen)/NamespaceTransformer.go: $(pSrc)/namespacetransformer/NamespaceTransformer.go
-$(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)/ReplacementTransformer.go: $(pSrc)/replacementtransformer/ReplacementTransformer.go
-$(pGen)/ReplicaCountTransformer.go: $(pSrc)/replicacounttransformer/ReplicaCountTransformer.go
-$(pGen)/SecretGenerator.go: $(pSrc)/secretgenerator/SecretGenerator.go
-$(pGen)/ValueAddTransformer.go: $(pSrc)/valueaddtransformer/ValueAddTransformer.go
-$(pGen)/HelmChartInflationGenerator.go: $(pSrc)/helmchartinflationgenerator/HelmChartInflationGenerator.go
-
-# The (verbose but portable) Makefile way to convert to lowercase.
-toLowerCase = $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,$(subst X,x,$(subst Y,y,$(subst Z,z,$1))))))))))))))))))))))))))
-
-$(pGen)/%.go: $(MYGOBIN)/pluginator
-	@echo "generating $*"
-	( \
-		set -e; \
-		cd $(pSrc)/$(call toLowerCase,$*); \
-		go generate .; \
-		cd ../../../$(pGen); \
-		$(MYGOBIN)/goimports -w $*.go \
-	)
-
-# Target is for debugging.
-.PHONY: generate-kustomize-builtin-plugins
-generate-kustomize-builtin-plugins: $(builtinplugins)
-
-.PHONY: build-kustomize-external-go-plugin
-build-kustomize-external-go-plugin:
-	./hack/buildExternalGoPlugins.sh ./plugin
-
-.PHONY: clean-kustomize-external-go-plugin
-clean-kustomize-external-go-plugin:
-	./hack/buildExternalGoPlugins.sh ./plugin clean
-
-### End kustomize plugin rules.
-
-.PHONY: lint-kustomize
-lint-kustomize: $(MYGOBIN)/golangci-lint-kustomize $(builtinplugins)
-	cd api; $(MYGOBIN)/golangci-lint-kustomize \
-	  -c ../.golangci-kustomize.yml \
-	  run ./...
-	cd kustomize; $(MYGOBIN)/golangci-lint-kustomize \
-	  -c ../.golangci-kustomize.yml \
-	  run ./...
-	cd cmd/pluginator; $(MYGOBIN)/golangci-lint-kustomize \
-	  -c ../../.golangci-kustomize.yml \
-	  run ./...
+kustomize: $(MYGOBIN)/kustomize
 
 # Used to add non-default compilation flags when experimenting with
 # plugin-to-api compatibility checks.
 .PHONY: build-kustomize-api
-build-kustomize-api: $(builtinplugins)
-	cd api; go build ./...
+build-kustomize-api: $(MYGOBIN)/goimports $(builtinplugins)
+	cd api; $(MAKE) build
 
 .PHONY: generate-kustomize-api
-generate-kustomize-api: $(MYGOBIN)/k8scopy
-	cd api; go generate ./...
+generate-kustomize-api:
+	cd api; $(MAKE) generate
 
-.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"
+
+# --- Verification targets ---
+.PHONY: verify-kustomize-repo
+verify-kustomize-repo: \
+	install-tools \
+	lint \
+	check-license \
+	test-unit-all \
+	build-non-plugin-all \
+	test-go-mod \
+	test-examples-kustomize-against-HEAD \
+	test-examples-kustomize-against-v4-release
+
+# The following target referenced by a file in
+# https://github.com/kubernetes/test-infra/tree/master/config/jobs/kubernetes-sigs/kustomize
+.PHONY: prow-presubmit-check
+prow-presubmit-check: \
+	install-tools \
+	test-unit-kustomize-plugins \
+	test-go-mod \
+	build-non-plugin-all \
+	test-examples-kustomize-against-HEAD \
+	test-examples-kustomize-against-v4-release
+
+.PHONY: license
+license: $(MYGOBIN)/addlicense
+	./hack/add-license.sh run
+
+.PHONY: check-license
+check-license: $(MYGOBIN)/addlicense
+	./hack/add-license.sh check
+
+.PHONY: lint
+lint: $(MYGOBIN)/golangci-lint $(MYGOBIN)/goimports $(builtinplugins)
+	./hack/for-each-module.sh "make lint"
+
+.PHONY: test-unit-all
+test-unit-all: \
+	test-unit-non-plugin \
+	test-unit-kustomize-plugins
+
+# This target is used by our Github Actions CI to run unit tests for all non-plugin modules in multiple GOOS environments.
+.PHONY: test-unit-non-plugin
+test-unit-non-plugin:
+	./hack/for-each-module.sh "make test" "./plugin/*" 15
+
+.PHONY: build-non-plugin-all
+build-non-plugin-all:
+	./hack/for-each-module.sh "make build" "./plugin/*" 15
 
 .PHONY: test-unit-kustomize-plugins
 test-unit-kustomize-plugins:
 	./hack/testUnitKustomizePlugins.sh
 
-.PHONY: test-unit-kustomize-cli
-test-unit-kustomize-cli:
-	cd kustomize; go test ./...
-
-.PHONY: test-unit-kustomize-all
-test-unit-kustomize-all: \
-	test-unit-kustomize-api \
-	test-unit-kustomize-cli \
-	test-unit-kustomize-plugins
-
-test-unit-cmd-all:
-	./hack/kyaml-pre-commit.sh
+.PHONY: functions-examples-all
+functions-examples-all:
+	for dir in $(abspath $(wildcard functions/examples/*/.)); do \
+		echo -e "\n---Running make tasks for function $$dir---"; \
+		set -e; \
+		cd $$dir; $(MAKE) all; \
+	done
 
 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; \
-	)
+	./hack/for-each-module.sh "go list -m -json all > /dev/null && go mod tidy -v"
 
 .PHONY:
-test-examples-e2e-kustomize: $(MYGOBIN)/mdrip $(MYGOBIN)/kind
+verify-kustomize-e2e: $(MYGOBIN)/mdrip $(MYGOBIN)/kind
 	( \
 		set -e; \
 		/bin/rm -f $(MYGOBIN)/kustomize; \
@@ -276,89 +169,16 @@ test-examples-kustomize-against-HEAD: $(MYGOBIN)/kustomize $(MYGOBIN)/mdrip
 	./hack/testExamplesAgainstKustomize.sh HEAD
 
 .PHONY:
-test-examples-kustomize-against-4.1: $(MYGOBIN)/mdrip
-	./hack/testExamplesAgainstKustomize.sh v4@v4.1.2
+test-examples-kustomize-against-v4-release: $(MYGOBIN)/mdrip
+	./hack/testExamplesAgainstKustomize.sh v4@$(LATEST_V4_RELEASE)
 
-# linux only.
-# This is for testing an example plugin that
-# uses kubeval for validation.
-# Don't want to add a hard dependence in go.mod file
-# to github.com/instrumenta/kubeval.
-# Instead, download the binary.
-$(MYGOBIN)/kubeval:
-	( \
-		set -e; \
-		d=$(shell mktemp -d); cd $$d; \
-		wget https://github.com/instrumenta/kubeval/releases/latest/download/kubeval-linux-amd64.tar.gz; \
-		tar xf kubeval-linux-amd64.tar.gz; \
-		mv kubeval $(MYGOBIN); \
-		rm -rf $$d; \
-	)
-
-# linux only.
-# This is for testing an example plugin that uses helm to inflate a chart
-# for subsequent kustomization.
-# Don't want to add a hard dependence in go.mod file to helm.
-# Instead, download the binaries.
-$(MYGOBIN)/helmV2:
-	( \
-		set -e; \
-		d=$(shell mktemp -d); cd $$d; \
-		tgzFile=helm-v2.13.1-linux-amd64.tar.gz; \
-		wget https://storage.googleapis.com/kubernetes-helm/$$tgzFile; \
-		tar -xvzf $$tgzFile; \
-		mv linux-amd64/helm $(MYGOBIN)/helmV2; \
-		rm -rf $$d \
-	)
-
-# Helm V3 differs from helm V2; downloading it to provide coverage for the
-# chart inflator plugin under helm v3.
-$(MYGOBIN)/helmV3:
-	( \
-		set -e; \
-		d=$(shell mktemp -d); cd $$d; \
-		tgzFile=helm-v3.5.3-linux-amd64.tar.gz; \
-		wget https://get.helm.sh/$$tgzFile; \
-		tar -xvzf $$tgzFile; \
-		mv linux-amd64/helm $(MYGOBIN)/helmV3; \
-		rm -rf $$d \
-	)
-
-$(MYGOBIN)/kind:
-	( \
-        set -e; \
-        d=$(shell mktemp -d); cd $$d; \
-        wget -O ./kind https://github.com/kubernetes-sigs/kind/releases/download/v0.7.0/kind-$(shell uname)-amd64; \
-        chmod +x ./kind; \
-        mv ./kind $(MYGOBIN); \
-        rm -rf $$d; \
-	)
-
-# linux only.
-$(MYGOBIN)/gh:
-	( \
-		set -e; \
-		d=$(shell mktemp -d); cd $$d; \
-		tgzFile=gh_1.0.0_linux_amd64.tar.gz; \
-		wget https://github.com/cli/cli/releases/download/v1.0.0/$$tgzFile; \
-		tar -xvzf $$tgzFile; \
-		mv gh_1.0.0_linux_amd64/bin/gh  $(MYGOBIN)/gh; \
-		rm -rf $$d \
-	)
 
+# --- Cleanup targets ---
 .PHONY: clean
-clean: clean-kustomize-external-go-plugin
+clean: clean-kustomize-external-go-plugin uninstall-tools
 	go clean --cache
 	rm -f $(builtinplugins)
-	rm -f $(MYGOBIN)/goimports
-	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.
-# rm -f $(MYGOBIN)/pluginator
 
 # Nuke the site from orbit.  It's the only way to be sure.
 .PHONY: nuke

Makefile-modules.mk

@@ -0,0 +1,38 @@
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+MYGOBIN = $(shell go env GOBIN)
+ifeq ($(MYGOBIN),)
+MYGOBIN = $(shell go env GOPATH)/bin
+endif
+export PATH := $(MYGOBIN):$(PATH)
+
+# only set this if not already set, so importing makefiles can override it
+export KUSTOMIZE_ROOT ?= $(shell pwd | sed -E 's|(.*\/kustomize)/(.*)|\1|')
+include $(KUSTOMIZE_ROOT)/Makefile-tools.mk
+
+.PHONY: lint test fix fmt tidy vet build
+
+lint: $(MYGOBIN)/golangci-lint
+	$(MYGOBIN)/golangci-lint \
+	  -c $$KUSTOMIZE_ROOT/.golangci.yml \
+	  --path-prefix $(shell pwd | sed -E 's|(.*\/kustomize)/(.*)|\2|') \
+	  run ./...
+
+test:
+	go test -v -timeout 45m -cover ./...
+
+fix:
+	go fix ./...
+
+fmt:
+	go fmt ./...
+
+tidy:
+	go mod tidy
+
+vet:
+	go vet ./...
+
+build:
+	go build -v -o $(MYGOBIN) ./...

Makefile-plugins.mk

@@ -0,0 +1,102 @@
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+### Kustomize plugin rules.
+#
+# The rules to deal with builtin plugins are a bit
+# complicated because
+#
+# - Every builtin plugin is a Go plugin -
+#   meaning it gets its own module directory
+#   (outside of the api module) with Go
+#   code in a 'main' package per Go plugin rules.
+# - kustomize locates plugins using the
+#   'apiVersion' and 'kind' fields from the
+#   plugin config file.
+# - k8s wants CamelCase in 'kind' fields.
+# - The module name (the last name in the path)
+#   must be the lowercased 'kind' of the
+#   plugin because Go and related tools
+#   demand lowercase in import paths, but
+#   allow CamelCase in file names.
+# - the generated code must live in the api
+#   module (it's linked into the api).
+
+# Where all generated builtin plugin code should go.
+pGen=api/internal/builtins
+# Where the builtin Go plugin modules live.
+pSrc=plugin/builtin
+
+_builtinplugins = \
+	AnnotationsTransformer.go \
+	ConfigMapGenerator.go \
+	IAMPolicyGenerator.go \
+	HashTransformer.go \
+	ImageTagTransformer.go \
+	LabelTransformer.go \
+	LegacyOrderTransformer.go \
+	NamespaceTransformer.go \
+	PatchJson6902Transformer.go \
+	PatchStrategicMergeTransformer.go \
+	PatchTransformer.go \
+	PrefixTransformer.go \
+	SuffixTransformer.go \
+	ReplacementTransformer.go \
+	ReplicaCountTransformer.go \
+	SecretGenerator.go \
+	ValueAddTransformer.go \
+	HelmChartInflationGenerator.go
+
+# Maintaining this explicit list of generated files, and
+# adding it as a dependency to a few targets, to assure
+# they get recreated if deleted.  The rules below on how
+# to make them don't, by themselves, assure they will be
+# recreated if deleted.
+builtinplugins = $(patsubst %,$(pGen)/%,$(_builtinplugins))
+
+# These rules are verbose, but assure that if a source file
+# is modified, the corresponding generated file, and only
+# that file, will be recreated.
+$(pGen)/AnnotationsTransformer.go: $(pSrc)/annotationstransformer/AnnotationsTransformer.go
+$(pGen)/ConfigMapGenerator.go: $(pSrc)/configmapgenerator/ConfigMapGenerator.go
+$(pGen)/GkeSaGenerator.go: $(pSrc)/gkesagenerator/GkeSaGenerator.go
+$(pGen)/HashTransformer.go: $(pSrc)/hashtransformer/HashTransformer.go
+$(pGen)/ImageTagTransformer.go: $(pSrc)/imagetagtransformer/ImageTagTransformer.go
+$(pGen)/LabelTransformer.go: $(pSrc)/labeltransformer/LabelTransformer.go
+$(pGen)/LegacyOrderTransformer.go: $(pSrc)/legacyordertransformer/LegacyOrderTransformer.go
+$(pGen)/NamespaceTransformer.go: $(pSrc)/namespacetransformer/NamespaceTransformer.go
+$(pGen)/PatchJson6902Transformer.go: $(pSrc)/patchjson6902transformer/PatchJson6902Transformer.go
+$(pGen)/PatchStrategicMergeTransformer.go: $(pSrc)/patchstrategicmergetransformer/PatchStrategicMergeTransformer.go
+$(pGen)/PatchTransformer.go: $(pSrc)/patchtransformer/PatchTransformer.go
+$(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: $(pSrc)/secretgenerator/SecretGenerator.go
+$(pGen)/ValueAddTransformer.go: $(pSrc)/valueaddtransformer/ValueAddTransformer.go
+$(pGen)/HelmChartInflationGenerator.go: $(pSrc)/helmchartinflationgenerator/HelmChartInflationGenerator.go
+
+# The (verbose but portable) Makefile way to convert to lowercase.
+toLowerCase = $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,$(subst X,x,$(subst Y,y,$(subst Z,z,$1))))))))))))))))))))))))))
+
+$(pGen)/%.go: $(MYGOBIN)/pluginator
+	@echo "generating $*"
+	( \
+		set -e; \
+		cd $(pSrc)/$(call toLowerCase,$*); \
+		go generate .; \
+		cd ../../../$(pGen); \
+		$(MYGOBIN)/goimports -w $*.go \
+	)
+
+# Target is for debugging.
+.PHONY: generate-kustomize-builtin-plugins
+generate-kustomize-builtin-plugins: $(builtinplugins)
+
+.PHONY: build-kustomize-external-go-plugin
+build-kustomize-external-go-plugin:
+	./hack/buildExternalGoPlugins.sh ./plugin
+
+.PHONY: clean-kustomize-external-go-plugin
+clean-kustomize-external-go-plugin:
+	./hack/buildExternalGoPlugins.sh ./plugin clean

Makefile-tools.mk

@@ -0,0 +1,100 @@
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+MYGOBIN = $(shell go env GOBIN)
+ifeq ($(MYGOBIN),)
+MYGOBIN = $(shell go env GOPATH)/bin
+endif
+export PATH := $(MYGOBIN):$(PATH)
+
+.PHONY: install-out-of-tree-tools
+install-out-of-tree-tools: \
+	$(MYGOBIN)/goimports \
+	$(MYGOBIN)/golangci-lint \
+	$(MYGOBIN)/helmV3 \
+	$(MYGOBIN)/mdrip \
+	$(MYGOBIN)/stringer \
+	$(MYGOBIN)/goimports
+
+.PHONY: uninstall-out-of-tree-tools
+uninstall-out-of-tree-tools:
+	rm -f $(MYGOBIN)/goimports
+	rm -f $(MYGOBIN)/golangci-lint
+	rm -f $(MYGOBIN)/helmV3
+	rm -f $(MYGOBIN)/mdrip
+	rm -f $(MYGOBIN)/stringer
+
+$(MYGOBIN)/golangci-lint:
+	go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.45.2
+
+$(MYGOBIN)/mdrip:
+	go install github.com/monopole/mdrip@v1.0.2
+
+$(MYGOBIN)/stringer:
+	go install golang.org/x/tools/cmd/stringer@latest
+
+$(MYGOBIN)/goimports:
+	go install golang.org/x/tools/cmd/goimports@latest
+
+$(MYGOBIN)/mdtogo:
+	go install sigs.k8s.io/kustomize/cmd/mdtogo@latest
+
+$(MYGOBIN)/addlicense:
+	go install github.com/google/addlicense@latest
+
+$(MYGOBIN)/statik:
+	go install github.com/rakyll/statik@latest
+
+$(MYGOBIN)/goreleaser:
+	go install github.com/goreleaser/goreleaser@v0.179.0 # https://github.com/kubernetes-sigs/kustomize/issues/4542
+
+$(MYGOBIN)/kind:
+	( \
+        set -e; \
+        d=$(shell mktemp -d); cd $$d; \
+        wget -O ./kind https://github.com/kubernetes-sigs/kind/releases/download/v0.7.0/kind-$(GOOS)-$(GOARCH); \
+        chmod +x ./kind; \
+        mv ./kind $(MYGOBIN); \
+        rm -rf $$d; \
+	)
+
+# linux only.
+$(MYGOBIN)/gh:
+	( \
+		set -e; \
+		d=$(shell mktemp -d); cd $$d; \
+		tgzFile=gh_1.0.0_$(GOOS)_$(GOARCH).tar.gz; \
+		wget https://github.com/cli/cli/releases/download/v1.0.0/$$tgzFile; \
+		tar -xvzf $$tgzFile; \
+		mv gh_1.0.0_$(GOOS)_$(GOARCH)/bin/gh  $(MYGOBIN)/gh; \
+		rm -rf $$d \
+	)
+
+# linux only.
+# This is for testing an example plugin that
+# uses kubeval for validation.
+# Don't want to add a hard dependence in go.mod file
+# to github.com/instrumenta/kubeval.
+# Instead, download the binary.
+$(MYGOBIN)/kubeval:
+	( \
+		set -e; \
+		d=$(shell mktemp -d); cd $$d; \
+		wget https://github.com/instrumenta/kubeval/releases/latest/download/kubeval-$(GOOS)-$(GOARCH).tar.gz; \
+		tar xf kubeval-$(GOOS)-$(GOARCH).tar.gz; \
+		mv kubeval $(MYGOBIN); \
+		rm -rf $$d; \
+	)
+
+# Helm V3 differs from helm V2; downloading it to provide coverage for the
+# chart inflator plugin under helm v3.
+$(MYGOBIN)/helmV3:
+	( \
+		set -e; \
+		d=$(shell mktemp -d); cd $$d; \
+		tgzFile=helm-v3.6.3-$(GOOS)-$(GOARCH).tar.gz; \
+		wget https://get.helm.sh/$$tgzFile; \
+		tar -xvzf $$tgzFile; \
+		mv $(GOOS)-$(GOARCH)/helm $(MYGOBIN)/helmV3; \
+		rm -rf $$d \
+	)

OWNERS

@@ -1,4 +1,6 @@
 # See https://github.com/kubernetes/community/blob/master/community-membership.md
 approvers:
-  - kustomize-admins
-  - kustomize-maintainers
+  - kustomize-approvers
+
+reviewers:
+  - kustomize-reviewers

OWNERS_ALIASES

@@ -1,16 +1,29 @@
-# Keep *-admins and *-maintainers list in sync with corresponding lists in
+# Keep *-owners and *-approvers lists in sync with *-admins and *-maintainers in
 # https://github.com/kubernetes/org/blob/main/config/kubernetes-sigs/sig-cli/teams.yaml
 aliases:
-  kustomize-admins:
+  kustomize-owners:
     - knverey
+    - natasha41575
+  kustomize-approvers:
+    - knverey
+    - natasha41575
+  kustomize-reviewers:
+    - knverey
+    - natasha41575
+    - yuwenma
+
+  kyaml-approvers:
+    - mengqiy
+    - mortent
+    - phanimarupaka
+  kyaml-reviewers:
+    - mengqiy
+    - mortent
+    - phanimarupaka
+
+  emeritus-approvers:
+    - liujingfang1
+    - Shell32-Natsu
+    - justinsb
     - monopole
     - pwittrock
-  kustomize-maintainers:
-    - justinsb
-    - mortent
-    - natasha41575
-    - phanimarupaka
-    - Shell32-Natsu
-  emeritus-maintainers:
-    - liujingfang1
-    - mengqiy

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)
@@ -32,14 +32,15 @@ will be reflected in the Kubernetes release notes.
 | < v1.14 | n/a |
 | v1.14-v1.20 | v2.0.3 |
 | 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
 
@@ -140,8 +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
 
@@ -150,27 +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
-[KEP]: https://github.com/kubernetes/enhancements/blob/master/keps/sig-cli/0008-kustomize.md
+[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/Makefile

@@ -0,0 +1,14 @@
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+include ../Makefile-modules.mk
+
+test:
+	go test -v -timeout 45m -cover ./... -ldflags "-X sigs.k8s.io/kustomize/api/provenance.version=v444.333.222"
+	cd krusty/openapitests; OPENAPI_TEST=true go test -v -timeout 45m -p 1 -cover ./...
+
+build:
+	go build -ldflags "-X sigs.k8s.io/kustomize/api/provenance.version=v444.333.222" ./...
+
+generate: $(MYGOBIN)/k8scopy $(MYGOBIN)/stringer
+	go generate ./...

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.FsSlice = append(annosFs, tc.fsslice...)
+			filter.WithMutationTracker(tc.setEntryCallback)
+			filter.FsSlice = append(annosFs, tc.fsslice...) //nolint:gocritic
 			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/doc.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package filters
 
 // Package filters collects various implementations

api/filters/fieldspec/fieldspec.go

@@ -8,10 +8,10 @@ import (
 	"strings"
 
 	"sigs.k8s.io/kustomize/api/filters/filtersutil"
-	"sigs.k8s.io/kustomize/api/internal/utils"
 	"sigs.k8s.io/kustomize/api/types"
 	"sigs.k8s.io/kustomize/kyaml/errors"
 	"sigs.k8s.io/kustomize/kyaml/resid"
+	"sigs.k8s.io/kustomize/kyaml/utils"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
@@ -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

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package filtersutil
 
 import (
@@ -21,9 +24,6 @@ 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 +31,39 @@ 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/iampolicygenerator/doc.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package gkesagenerator contains a kio.Filter that that generates a
 // iampolicy-related resources for a given cloud provider
 package iampolicygenerator

api/filters/iampolicygenerator/iampolicygenerator.go

@@ -43,7 +43,7 @@ metadata:
 		f.IAMPolicyGenerator.KubernetesService.Name)
 
 	if f.IAMPolicyGenerator.Namespace != "" {
-		input = input + fmt.Sprintf("\n  namespace: %s", f.IAMPolicyGenerator.Namespace)
+		input += fmt.Sprintf("\n  namespace: %s", f.IAMPolicyGenerator.Namespace)
 	}
 
 	sa, err := yaml.Parse(input)

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 +662,237 @@ 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",
+				},
+			},
+		},
+		"updateimagesuffix": {
+			input: `
+group: apps
+apiVersion: v1
+kind: Deployment
+metadata:
+  name: deploysuffix
+spec:
+  template:
+    spec:
+      containers:
+      - image: redis:6.2.6
+        name: redis
+`,
+			expectedOutput: `
+group: apps
+apiVersion: v1
+kind: Deployment
+metadata:
+  name: deploysuffix
+spec:
+  template:
+    spec:
+      containers:
+      - image: redis:6.2.6-alpine
+        name: redis
+`,
+			filter: Filter{
+				ImageTag: types.Image{
+					Name:      "redis",
+					TagSuffix: "-alpine",
+				},
+			},
+			fsSlice: []types.FieldSpec{
+				{
+					Path: "spec/template/spec/containers[]/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/legacy.go

@@ -6,6 +6,7 @@ package imagetag
 import (
 	"sigs.k8s.io/kustomize/api/internal/utils"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/errors"
 	"sigs.k8s.io/kustomize/kyaml/kio"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
@@ -81,9 +82,7 @@ func (f findFieldsFilter) walk(node *yaml.RNode) error {
 			return nil
 		})
 	case yaml.SequenceNode:
-		return node.VisitElements(func(n *yaml.RNode) error {
-			return f.walk(n)
-		})
+		return errors.Wrap(node.VisitElements(f.walk))
 	}
 	return nil
 }

api/filters/imagetag/updater.go

@@ -4,6 +4,8 @@
 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 +15,57 @@ 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
+	switch {
+	case u.ImageTag.NewTag != "" && u.ImageTag.Digest != "":
+		tag = u.ImageTag.NewTag
+		digest = u.ImageTag.Digest
+	case u.ImageTag.NewTag != "":
+		tag = u.ImageTag.NewTag
+		digest = ""
+	case u.ImageTag.Digest != "":
+		tag = ""
+		digest = u.ImageTag.Digest
+	case u.ImageTag.TagSuffix != "":
+		tag += u.ImageTag.TagSuffix
+		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/nameref/doc.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package nameref contains a kio.Filter implementation of the kustomize
 // name reference transformer.
 package nameref

api/filters/nameref/nameref.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package nameref
 
 import (
@@ -56,6 +59,7 @@ func (f Filter) run(node *yaml.RNode) (*yaml.RNode, error) {
 		// sanity check.
 		return nil, err
 	}
+	f.NameFieldToUpdate.Gvk = f.Referrer.GetGvk()
 	if err := node.PipeE(fieldspec.Filter{
 		FieldSpec: f.NameFieldToUpdate,
 		SetValue:  f.set,

api/filters/nameref/nameref_test.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package nameref
 
 import (

api/filters/nameref/seqfilter.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package nameref
 
 import (

api/filters/nameref/seqfilter_test.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package nameref
 
 import (

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 +131,14 @@ 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",
@@ -283,29 +286,134 @@ 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...)
+			test.filter.FsSlice = append(config.NameSpace, test.fsslice...) //nolint:gocritic
 			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/patchstrategicmerge/patchstrategicmerge_test.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package patchstrategicmerge
 
 import (

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/doc.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package refvar contains a kio.Filter implementation of the kustomize
 // refvar transformer (find and replace $(FOO) style variables in strings).
 package refvar

api/filters/refvar/refvar.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package refvar
 
 import (

api/filters/refvar/refvar_test.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package refvar_test
 
 import (
@@ -17,7 +20,6 @@ var makeMf = func(theMap map[string]interface{}) MappingFunc {
 }
 
 func TestFilter(t *testing.T) {
-
 	testCases := map[string]struct {
 		input    string
 		expected string
@@ -243,17 +245,7 @@ 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'
-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),
@@ -269,16 +261,7 @@ 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'
-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/doc.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package replacement contains a kio.Filter implementation of the kustomize
 // replacement transformer (accepts sources and looks for targets to replace
 // their values with values from the sources).

api/filters/replacement/replacement.go

@@ -4,12 +4,15 @@
 package replacement
 
 import (
+	"errors"
 	"fmt"
 	"strings"
 
 	"sigs.k8s.io/kustomize/api/internal/utils"
+	"sigs.k8s.io/kustomize/api/resource"
 	"sigs.k8s.io/kustomize/api/types"
 	"sigs.k8s.io/kustomize/kyaml/resid"
+	kyaml_utils "sigs.k8s.io/kustomize/kyaml/utils"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
@@ -19,11 +22,11 @@ type Filter struct {
 
 // Filter replaces values of targets with values from sources
 func (f Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
-	for _, r := range f.Replacements {
+	for i, r := range f.Replacements {
 		if r.Source == nil || r.Targets == nil {
 			return nil, fmt.Errorf("replacements must specify a source and at least one target")
 		}
-		value, err := getReplacement(nodes, &r)
+		value, err := getReplacement(nodes, &f.Replacements[i])
 		if err != nil {
 			return nil, err
 		}
@@ -48,8 +51,19 @@ func applyReplacement(nodes []*yaml.RNode, value *yaml.RNode, targets []*types.T
 			if err != nil {
 				return nil, err
 			}
-			for _, id := range ids {
-				if id.IsSelectedBy(t.Select.ResId) && !rejectId(t.Reject, &id) {
+
+			// filter targets by label and annotation selectors
+			selectByAnnoAndLabel, err := selectByAnnoAndLabel(n, t)
+			if err != nil {
+				return nil, err
+			}
+			if !selectByAnnoAndLabel {
+				continue
+			}
+
+			// filter targets by matching resource IDs
+			for i, id := range ids {
+				if id.IsSelectedBy(t.Select.ResId) && !rejectId(t.Reject, &ids[i]) {
 					err := applyToNode(n, value, t)
 					if err != nil {
 						return nil, err
@@ -62,9 +76,37 @@ func applyReplacement(nodes []*yaml.RNode, value *yaml.RNode, targets []*types.T
 	return nodes, nil
 }
 
+func selectByAnnoAndLabel(n *yaml.RNode, t *types.TargetSelector) (bool, error) {
+	if matchesSelect, err := matchesAnnoAndLabelSelector(n, t.Select); !matchesSelect || err != nil {
+		return false, err
+	}
+	for _, reject := range t.Reject {
+		if reject.AnnotationSelector == "" && reject.LabelSelector == "" {
+			continue
+		}
+		if m, err := matchesAnnoAndLabelSelector(n, reject); m || err != nil {
+			return false, err
+		}
+	}
+	return true, nil
+}
+
+func matchesAnnoAndLabelSelector(n *yaml.RNode, selector *types.Selector) (bool, error) {
+	r := resource.Resource{RNode: *n}
+	annoMatch, err := r.MatchesAnnotationSelector(selector.AnnotationSelector)
+	if err != nil {
+		return false, err
+	}
+	labelMatch, err := r.MatchesLabelSelector(selector.LabelSelector)
+	if err != nil {
+		return false, err
+	}
+	return annoMatch && labelMatch, nil
+}
+
 func rejectId(rejects []*types.Selector, id *resid.ResId) bool {
 	for _, r := range rejects {
-		if id.IsSelectedBy(r.ResId) {
+		if !r.ResId.IsEmpty() && id.IsSelectedBy(r.ResId) {
 			return true
 		}
 	}
@@ -73,19 +115,27 @@ func rejectId(rejects []*types.Selector, id *resid.ResId) bool {
 
 func applyToNode(node *yaml.RNode, value *yaml.RNode, target *types.TargetSelector) error {
 	for _, fp := range target.FieldPaths {
-		fieldPath := utils.SmarterPathSplitter(fp, ".")
+		fieldPath := kyaml_utils.SmarterPathSplitter(fp, ".")
 		var t *yaml.RNode
 		var err error
 		if target.Options != nil && target.Options.Create {
+			// create option is not supported in a wildcard matching.
+			// Because, PathMatcher is not supported create option.
+			// So, if create option is set, we fallback to PathGetter.
+			for _, f := range fieldPath {
+				if f == "*" {
+					return errors.New("cannot support create option in a multi-value target") //nolint:goerr113
+				}
+			}
 			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
 			}
 		}
@@ -93,6 +143,24 @@ 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 {
+		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 != "" {
@@ -112,7 +180,14 @@ 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
 }
 
@@ -125,16 +200,17 @@ func getReplacement(nodes []*yaml.RNode, r *types.Replacement) (*yaml.RNode, err
 	if r.Source.FieldPath == "" {
 		r.Source.FieldPath = types.DefaultReplacementFieldPath
 	}
-	fieldPath := utils.SmarterPathSplitter(r.Source.FieldPath, ".")
+	fieldPath := kyaml_utils.SmarterPathSplitter(r.Source.FieldPath, ".")
 
 	rn, err := source.Pipe(yaml.Lookup(fieldPath...))
 	if err != nil {
 		return nil, err
 	}
-	if !rn.IsNilOrEmpty() {
-		return getRefinedValue(r.Source.Options, rn)
+	if rn.IsNilOrEmpty() {
+		return nil, fmt.Errorf("fieldPath `%s` is missing for replacement source %s", r.Source.FieldPath, r.Source.ResId)
 	}
-	return rn, nil
+
+	return getRefinedValue(r.Source.Options, rn)
 }
 
 func getRefinedValue(options *types.FieldOptions, rn *yaml.RNode) (*yaml.RNode, error) {

api/filters/replicacount/example_test.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package replicacount
 
 import (

api/filters/replicacount/replicacount.go

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package replicacount
 
 import (
@@ -14,9 +17,17 @@ 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 +44,5 @@ 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

@@ -1,3 +1,6 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package replicacount
 
 import (
@@ -7,14 +10,17 @@ 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 +167,44 @@ 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 +212,7 @@ 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 +8,9 @@ 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 v0.11.0
+	k8s.io/kube-openapi v0.0.0-20220401212409-b28bf2818661
+	sigs.k8s.io/kustomize/kyaml v0.13.7
 	sigs.k8s.io/yaml v1.2.0
 )

api/go.sum

@@ -1,230 +1,656 @@
 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=
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+google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
+google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8=
+google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
 google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
-gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
+gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
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+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
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 k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
-k8s.io/kube-openapi v0.0.0-20210421082810-95288971da7e h1:KLHHjkdQFomZy8+06csTWZ0m1343QqxZhR2LJ1OxCYM=
-k8s.io/kube-openapi v0.0.0-20210421082810-95288971da7e/go.mod h1:vHXdDvt9+2spS2Rx9ql3I8tycm3H9FDfdUoIuKCefvw=
-sigs.k8s.io/kustomize/kyaml v0.11.0 h1:9KhiCPKaVyuPcgOLJXkvytOvjMJLoxpjodiycb4gHsA=
-sigs.k8s.io/kustomize/kyaml v0.11.0/go.mod h1:GNMwjim4Ypgp/MueD3zXHLRJEjz7RvtPae0AwlvEMFM=
+k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
+k8s.io/kube-openapi v0.0.0-20220401212409-b28bf2818661 h1:nqYOUleKLC/0P1zbU29F5q6aoezM6MOAVz+iyfQbZ5M=
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+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+sigs.k8s.io/kustomize/kyaml v0.13.7 h1:/EZ/nPaLUzeJKF/BuJ4QCuMVJWiEVoI8iftOHY3g3tk=
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api/hasher/hasher_test.go

@@ -341,6 +341,7 @@ data:
 // The return value indicates whether we should skip the rest of the test case
 // due to the error result.
 func SkipRest(t *testing.T, desc string, err error, contains string) bool {
+	t.Helper()
 	if err != nil {
 		if len(contains) == 0 {
 			t.Errorf("case %q, expect nil error but got %q", desc, err.Error())

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

@@ -11,6 +11,7 @@ import (
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinconfig"
 	"sigs.k8s.io/kustomize/api/resmap"
 	"sigs.k8s.io/kustomize/api/resource"
+	"sigs.k8s.io/kustomize/kyaml/resid"
 )
 
 type nameReferenceTransformer struct {
@@ -51,7 +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
@@ -109,11 +113,17 @@ func debug(fMap filterMap) {
 // 'spec/scaleTargetRef/name' field. Return a filter that can do that.
 func (t *nameReferenceTransformer) determineFilters(
 	resources []*resource.Resource) (fMap filterMap) {
+	// We cache the resource OrgId values because they don't change and otherwise are very visible in a memory pprof
+	resourceOrgIds := make([]resid.ResId, len(resources))
+	for i, resource := range resources {
+		resourceOrgIds[i] = resource.OrgId()
+	}
+
 	fMap = make(filterMap)
 	for _, backReference := range t.backRefs {
 		for _, referrerSpec := range backReference.Referrers {
-			for _, res := range resources {
-				if res.OrgId().IsSelected(&referrerSpec.Gvk) {
+			for i, res := range resources {
+				if resourceOrgIds[i].IsSelected(&referrerSpec.Gvk) {
 					// If this is true, the res might be a referrer, and if
 					// so, the name reference it holds might need an update.
 					if resHasField(res, referrerSpec.Path) {

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)
@@ -897,7 +888,9 @@ func TestNameReferenceClusterWide(t *testing.T) {
 		t.Fatalf("unexpected error: %v", err)
 	}
 
+	expected.RemoveBuildAnnotations()
 	m.RemoveBuildAnnotations()
+
 	if err = expected.ErrorIfNotEqualLists(m); err != nil {
 		t.Fatalf(notEqualErrFmt, err)
 	}

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/accumulator/resaccumulator.go

@@ -107,7 +107,6 @@ func (ra *ResAccumulator) findVarValueFromResources(v types.Var) (interface{}, e
 	for _, res := range ra.resMap.Resources() {
 		for _, varName := range res.GetRefVarNames() {
 			if varName == v.Name {
-				//nolint: staticcheck
 				s, err := res.GetFieldValue(v.FieldRef.FieldPath)
 				if err != nil {
 					return "", fmt.Errorf(
@@ -168,3 +167,23 @@ func (ra *ResAccumulator) FixBackReferences() (err error) {
 	return ra.Transform(
 		newNameReferenceTransformer(ra.tConfig.NameReference))
 }
+
+// Intersection drops the resources which "other" does not have.
+func (ra *ResAccumulator) Intersection(other resmap.ResMap) error {
+	for _, curId := range ra.resMap.AllIds() {
+		toDelete := true
+		for _, otherId := range other.AllIds() {
+			if otherId == curId {
+				toDelete = false
+				break
+			}
+		}
+		if toDelete {
+			err := ra.resMap.Remove(curId)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}

api/internal/accumulator/resaccumulator_test.go

@@ -22,6 +22,7 @@ import (
 )
 
 func makeResAccumulator(t *testing.T) *ResAccumulator {
+	t.Helper()
 	ra := MakeEmptyAccumulator()
 	err := ra.MergeConfig(builtinconfig.MakeDefaultConfig())
 	if err != nil {
@@ -133,6 +134,7 @@ func TestResolveVarsOneUnused(t *testing.T) {
 }
 
 func expectLog(t *testing.T, log bytes.Buffer, expect string) {
+	t.Helper()
 	if !strings.Contains(log.String(), expect) {
 		t.Fatalf("expected log containing '%s', got '%s'", expect, log.String())
 	}
@@ -362,10 +364,10 @@ func TestResolveVarsWithNoambiguation(t *testing.T) {
 			"metadata": map[string]interface{}{
 				"name": "sub-backendOne",
 				"annotations": map[string]interface{}{
-					"config.kubernetes.io/previousKinds":      "Service",
-					"config.kubernetes.io/previousNames":      "backendOne",
-					"config.kubernetes.io/previousNamespaces": "default",
-					"config.kubernetes.io/prefixes":           "sub-",
+					"internal.config.kubernetes.io/previousKinds":      "Service",
+					"internal.config.kubernetes.io/previousNames":      "backendOne",
+					"internal.config.kubernetes.io/previousNamespaces": "default",
+					"internal.config.kubernetes.io/prefixes":           "sub-",
 				},
 			}}).ResMap()
 

api/internal/builtins/PatchJson6902Transformer.go

@@ -12,6 +12,7 @@ import (
 	"sigs.k8s.io/kustomize/api/ifc"
 	"sigs.k8s.io/kustomize/api/resmap"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/kio/kioutil"
 	"sigs.k8s.io/yaml"
 )
 
@@ -78,12 +79,23 @@ func (p *PatchJson6902TransformerPlugin) Transform(m resmap.ResMap) error {
 		return err
 	}
 	for _, res := range resources {
+		internalAnnotations := kioutil.GetInternalAnnotations(&res.RNode)
+
 		err = res.ApplyFilter(patchjson6902.Filter{
 			Patch: p.JsonOp,
 		})
 		if err != nil {
 			return err
 		}
+
+		annotations := res.GetAnnotations()
+		for key, value := range internalAnnotations {
+			annotations[key] = value
+		}
+		err = res.SetAnnotations(annotations)
+		if err != nil {
+			return err
+		}
 	}
 	return nil
 }

api/internal/builtins/PatchTransformer.go

@@ -12,6 +12,7 @@ import (
 	"sigs.k8s.io/kustomize/api/resmap"
 	"sigs.k8s.io/kustomize/api/resource"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/kio/kioutil"
 	"sigs.k8s.io/yaml"
 )
 
@@ -111,12 +112,19 @@ func (p *PatchTransformerPlugin) transformJson6902(m resmap.ResMap, patch jsonpa
 	}
 	for _, res := range resources {
 		res.StorePreviousId()
+		internalAnnotations := kioutil.GetInternalAnnotations(&res.RNode)
 		err = res.ApplyFilter(patchjson6902.Filter{
 			Patch: p.Patch,
 		})
 		if err != nil {
 			return err
 		}
+
+		annotations := res.GetAnnotations()
+		for key, value := range internalAnnotations {
+			annotations[key] = value
+		}
+		err = res.SetAnnotations(annotations)
 	}
 	return nil
 }

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/git/repospec.go

@@ -78,15 +78,15 @@ func (x *RepoSpec) Cleaner(fSys filesys.FileSystem) func() error {
 	return func() error { return fSys.RemoveAll(x.Dir.String()) }
 }
 
-// NewRepoSpecFromUrl parses git-like urls.
+// NewRepoSpecFromURL parses git-like urls.
 // From strings like git@github.com:someOrg/someRepo.git or
 // https://github.com/someOrg/someRepo?ref=someHash, extract
 // the parts.
-func NewRepoSpecFromUrl(n string) (*RepoSpec, error) {
+func NewRepoSpecFromURL(n string) (*RepoSpec, error) {
 	if filepath.IsAbs(n) {
 		return nil, fmt.Errorf("uri looks like abs path: %s", n)
 	}
-	host, orgRepo, path, gitRef, gitSubmodules, suffix, gitTimeout := parseGitUrl(n)
+	host, orgRepo, path, gitRef, gitSubmodules, suffix, gitTimeout := parseGitURL(n)
 	if orgRepo == "" {
 		return nil, fmt.Errorf("url lacks orgRepo: %s", n)
 	}
@@ -108,9 +108,8 @@ const (
 // From strings like git@github.com:someOrg/someRepo.git or
 // https://github.com/someOrg/someRepo?ref=someHash, extract
 // the parts.
-func parseGitUrl(n string) (
+func parseGitURL(n string) (
 	host string, orgRepo string, path string, gitRef string, gitSubmodules bool, gitSuff string, gitTimeout time.Duration) {
-
 	if strings.Contains(n, gitDelimiter) {
 		index := strings.Index(n, gitDelimiter)
 		// Adding _git/ to host
@@ -125,7 +124,7 @@ func parseGitUrl(n string) (
 		index := strings.Index(n, gitSuffix)
 		orgRepo = n[0:index]
 		n = n[index+len(gitSuffix):]
-		if n[0] == '/' {
+		if len(n) > 0 && n[0] == '/' {
 			n = n[1:]
 		}
 		path, gitRef, gitTimeout, gitSubmodules = peelQuery(n)
@@ -229,7 +228,7 @@ func parseHostSpec(n string) (string, string) {
 		if strings.HasSuffix(host, p) {
 			i := strings.Index(n, "/")
 			if i > -1 {
-				host = host + n[0:i+1]
+				host += n[0 : i+1]
 				n = n[i+1:]
 			}
 			break

api/internal/git/repospec_test.go

@@ -37,7 +37,7 @@ var hostNamesRawAndNormalized = [][]string{
 	{"git@github.com/", "git@github.com:"},
 }
 
-func makeUrl(hostFmt, orgRepo, path, href string) string {
+func makeURL(hostFmt, orgRepo, path, href string) string {
 	if len(path) > 0 {
 		orgRepo = filepath.Join(orgRepo, path)
 	}
@@ -56,8 +56,8 @@ func TestNewRepoSpecFromUrl(t *testing.T) {
 		for _, orgRepo := range orgRepos {
 			for _, pathName := range pathNames {
 				for _, hrefArg := range hrefArgs {
-					uri := makeUrl(hostRaw, orgRepo, pathName, hrefArg)
-					rs, err := NewRepoSpecFromUrl(uri)
+					uri := makeURL(hostRaw, orgRepo, pathName, hrefArg)
+					rs, err := NewRepoSpecFromURL(uri)
 					if err != nil {
 						t.Errorf("problem %v", err)
 					}
@@ -99,7 +99,7 @@ var badData = [][]string{
 
 func TestNewRepoSpecFromUrlErrors(t *testing.T) {
 	for _, tuple := range badData {
-		_, err := NewRepoSpecFromUrl(tuple[0])
+		_, err := NewRepoSpecFromURL(tuple[0])
 		if err == nil {
 			t.Error("expected error")
 		}
@@ -182,10 +182,16 @@ func TestNewRepoSpecFromUrl_CloneSpecs(t *testing.T) {
 			absPath:   notCloned.String(),
 			ref:       "",
 		},
+		"t12": {
+			input:     "https://bitbucket.example.com/scm/project/repository.git",
+			cloneSpec: "https://bitbucket.example.com/scm/project/repository.git",
+			absPath:   notCloned.String(),
+			ref:       "",
+		},
 	}
 	for tn, tc := range testcases {
 		t.Run(tn, func(t *testing.T) {
-			rs, err := NewRepoSpecFromUrl(tc.input)
+			rs, err := NewRepoSpecFromURL(tc.input)
 			assert.NoError(t, err)
 			assert.Equal(t, tc.cloneSpec, rs.CloneSpec(), "cloneSpec mismatch")
 			assert.Equal(t, tc.absPath, rs.AbsPath(), "absPath mismatch")

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) {