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add helm plugin to distribute the projects
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camilamacedo86 committed Oct 22, 2024
1 parent eae8b21 commit 44c23e2
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110 changes: 110 additions & 0 deletions .github/workflows/test-helm-samples.yml
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name: Helm Testdata Sample

on:
push:
paths:
- 'testdata/project-v4-with-plugins/**'
- 'testdata/project-v4-multigroup/**'
- '.github/workflows/test-helm-samples.yml'
pull_request:
paths:
- 'testdata/project-v4-with-plugins/**'
- 'testdata/project-v4-multigroup/**'
- '.github/workflows/test-helm-samples.yml'

jobs:
helm-test-project-v4-with-plugins:
runs-on: ubuntu-latest
strategy:
fail-fast: true
if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
steps:
- name: Checkout repository
uses: actions/checkout@v4

- name: Setup Go
uses: actions/setup-go@v5
with:
go-version: '~1.22'

- name: Install the latest version of kind
run: |
curl -Lo ./kind https://kind.sigs.k8s.io/dl/latest/kind-linux-amd64
chmod +x ./kind
sudo mv ./kind /usr/local/bin/kind
- name: Verify kind installation
run: kind version

- name: Create kind cluster
run: kind create cluster

- name: Prepare project-v4-with-plugins
run: |
cd testdata/project-v4-with-plugins/
go mod tidy
make docker-build IMG=project-v4-with-plugins:v0.1.0
kind load docker-image project-v4-with-plugins:v0.1.0
- name: Install Helm
run: |
curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
- name: Verify Helm installation
run: helm version

- name: Lint Helm chart for project-v4-with-plugins
run: |
helm lint testdata/project-v4-with-plugins/dist/chart
- name: Install Helm chart for project-v4-with-plugins
run: |
helm install my-release testdata/project-v4-with-plugins/dist/chart --create-namespace --namespace project-v4-with-plugins-system
helm-test-project-v4-multigroup:
runs-on: ubuntu-latest
strategy:
fail-fast: true
if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
steps:
- name: Checkout repository
uses: actions/checkout@v4

- name: Setup Go
uses: actions/setup-go@v5
with:
go-version: '~1.22'

- name: Install the latest version of kind
run: |
curl -Lo ./kind https://kind.sigs.k8s.io/dl/latest/kind-linux-amd64
chmod +x ./kind
sudo mv ./kind /usr/local/bin/kind
- name: Verify kind installation
run: kind version

- name: Create kind cluster
run: kind create cluster

- name: Prepare project-v4-multigroup
run: |
cd testdata/project-v4-multigroup/
go mod tidy
make docker-build IMG=project-v4-multigroup:v0.1.0
kind load docker-image project-v4-multigroup:v0.1.0
- name: Install Helm
run: |
curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
- name: Verify Helm installation
run: helm version

- name: Lint Helm chart for project-v4-multigroup
run: |
helm lint testdata/project-v4-multigroup/dist/chart
- name: Install Helm chart for project-v4-multigroup
run: |
helm install my-release-multigroup testdata/project-v4-multigroup/dist/chart --create-namespace --namespace project-v4-multigroup-system
11 changes: 10 additions & 1 deletion Makefile
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Expand Up @@ -97,7 +97,7 @@ lint-fix: golangci-lint ## Run golangci-lint linter and perform fixes

.PHONY: yamllint
yamllint:
@files=$$(find testdata -name '*.yaml' ! -path 'testdata/*/dist/install.yaml'); \
@files=$$(find testdata -name '*.yaml' ! -path 'testdata/*/dist/*'); \
docker run --rm $$(tty -s && echo "-it" || echo) -v $(PWD):/data cytopia/yamllint:latest $$files -d "{extends: relaxed, rules: {line-length: {max: 120}}}" --no-warnings

GOLANGCI_LINT = $(shell pwd)/bin/golangci-lint
Expand Down Expand Up @@ -171,3 +171,12 @@ test-spaces: ## Run the trailing spaces check
test-legacy: ## Run the tests to validate legacy path for webhooks
rm -rf ./testdata/**legacy**/
./test/testdata/legacy-webhook-path.sh

.PHONY: install-helm
install-helm: ## Install the latest version of Helm locally
@curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash

.PHONY: helm-lint
helm-lint: install-helm ## Lint the Helm chart in testdata
helm lint testdata/project-v4-multigroup/dist/chart
helm lint testdata/project-v4-with-plugins/dist/chart
2 changes: 2 additions & 0 deletions cmd/main.go
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Expand Up @@ -30,6 +30,7 @@ import (
deployimagev1alpha1 "sigs.k8s.io/kubebuilder/v4/pkg/plugins/golang/deploy-image/v1alpha1"
golangv4 "sigs.k8s.io/kubebuilder/v4/pkg/plugins/golang/v4"
grafanav1alpha1 "sigs.k8s.io/kubebuilder/v4/pkg/plugins/optional/grafana/v1alpha"
helmv1alpha1 "sigs.k8s.io/kubebuilder/v4/pkg/plugins/optional/helm/v1alpha"
)

func init() {
Expand Down Expand Up @@ -61,6 +62,7 @@ func main() {
&kustomizecommonv2.Plugin{},
&deployimagev1alpha1.Plugin{},
&grafanav1alpha1.Plugin{},
&helmv1alpha1.Plugin{},
),
cli.WithPlugins(externalPlugins...),
cli.WithDefaultPlugins(cfgv3.Version, gov4Bundle),
Expand Down
61 changes: 61 additions & 0 deletions docs/book/src/plugins/available/helm-v1-alpha.md
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# Helm Plugin (`helm/v1-alpha`)

The Helm plugin is an optional plugin that can be used to scaffold a Helm chart, allowing you to distribute the project using Helm.

By default, users can generate a bundle with all the manifests by running the following command:

```bash
make build-installer IMG=<some-registry>/<project-name:tag>
```

This allows the project consumer to install the solution by applying the bundle with:

```bash
kubectl apply -f https://raw.githubusercontent.com/<org>/project-v4/<tag or branch>/dist/install.yaml
```

However, in many scenarios, you might prefer to provide a Helm chart to package your solution.
If so, you can use this plugin to generate the Helm chart under the `dist` directory.

<aside class="note">
<h1>Examples</h1>

You can check its default scaffold by looking at the `project-v4-with-plugins` projects
under the [testdata][testdata] directory on the root directory of the Kubebuilder project.

</aside>

## When to use it ?

- If you are looking to provide to your users a HelmChart to install and manage your project

## How to use it ?

### Basic Usage

The Helm plugin is attached to the `init` subcommand and the `edit` subcommand:

```sh
# Initialize a new project with helm chart
kubebuilder init --plugins helm/v1-alpha

# Enable or Update the helm chart via the helm plugin to an existing project
kubebuilder edit --plugins helm/v1-alpha
```

## Subcommands

The Helm plugin implements the following subcommands:

- edit (`$ kubebuilder edit [OPTIONS]`)

- init (`$ kubebuilder init [OPTIONS]`)

## Affected files

The following scaffolds will be created or updated by this plugin:

- `dist/chart/*`

[testdata]: https://github.com/kubernetes-sigs/kubebuilder/tree/master/testdata/project-v4-with-plugins

12 changes: 7 additions & 5 deletions docs/book/src/plugins/to-add-optional-features.md
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Expand Up @@ -2,10 +2,12 @@

The following plugins are useful to generate code and take advantage of optional features

| Plugin | Key | Description |
|---------------------------------------------------| -------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [grafana.kubebuilder.io/v1-alpha][grafana] | `grafana/v1-alpha` | Optional helper plugin which can be used to scaffold Grafana Manifests Dashboards for the default metrics which are exported by controller-runtime. |
| [deploy-image.go.kubebuilder.io/v1-alpha][deploy] | `deploy-image/v1-alpha` | Optional helper plugin which can be used to scaffold APIs and controller with code implementation to Deploy and Manage an Operand(image). |
| Plugin | Key | Description |
|---------------------------------------------------|-------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------|
| [grafana.kubebuilder.io/v1-alpha][grafana] | `grafana/v1-alpha` | Optional helper plugin which can be used to scaffold Grafana Manifests Dashboards for the default metrics which are exported by controller-runtime. |
| [deploy-image.go.kubebuilder.io/v1-alpha][deploy] | `deploy-image/v1-alpha` | Optional helper plugin which can be used to scaffold APIs and controller with code implementation to Deploy and Manage an Operand(image). |
| [helm.kubebuilder.io/v1-alpha][helm] | `helm/v1-alpha` | Optional helper plugin which can be used to scaffold a Helm Chart to distribute the project under the `dist` directory |

[grafana]: ./available/grafana-v1-alpha.md
[deploy]: ./available/deploy-image-plugin-v1-alpha.md
[deploy]: ./available/deploy-image-plugin-v1-alpha.md
[helm]: ./available/helm-v1-alpha.md
37 changes: 37 additions & 0 deletions pkg/plugins/optional/helm/v1alpha/commons.go
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/*
Copyright 2024 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package v1alpha

import (
"errors"

"sigs.k8s.io/kubebuilder/v4/pkg/config"
)

func insertPluginMetaToConfig(target config.Config, cfg pluginConfig) error {
err := target.DecodePluginConfig(pluginKey, cfg)
if !errors.As(err, &config.UnsupportedFieldError{}) {
if err != nil && !errors.As(err, &config.PluginKeyNotFoundError{}) {
return err
}
if err = target.EncodePluginConfig(pluginKey, cfg); err != nil {
return err
}
}

return nil
}
68 changes: 68 additions & 0 deletions pkg/plugins/optional/helm/v1alpha/edit.go
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/*
Copyright 2024 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package v1alpha

import (
"fmt"

"github.com/spf13/pflag"
"sigs.k8s.io/kubebuilder/v4/pkg/config"
"sigs.k8s.io/kubebuilder/v4/pkg/machinery"
"sigs.k8s.io/kubebuilder/v4/pkg/plugin"
"sigs.k8s.io/kubebuilder/v4/pkg/plugins/optional/helm/v1alpha/scaffolds"
)

var _ plugin.EditSubcommand = &editSubcommand{}

type editSubcommand struct {
config config.Config
force bool
}

func (p *editSubcommand) UpdateMetadata(cliMeta plugin.CLIMetadata, subcmdMeta *plugin.SubcommandMetadata) {
subcmdMeta.Description = `Initialize a helm chart to distribute the project under dist/
`
subcmdMeta.Examples = fmt.Sprintf(` # Initialize a helm chart to distribute the project under dist/
%[1]s edit --plugins helm/v1alpha
`, cliMeta.CommandName)
}

func (p *editSubcommand) BindFlags(fs *pflag.FlagSet) {
fs.BoolVar(&p.force, "force", true, "if true, run re-generate the files")
}

func (p *editSubcommand) InjectConfig(c config.Config) error {
p.config = c
return nil
}

func (p *editSubcommand) Scaffold(fs machinery.Filesystem) error {
scaffolder := scaffolds.NewInitHelmScaffolder(p.config, p.force)
scaffolder.InjectFS(fs)
err := scaffolder.Scaffold()
if err != nil {
return err
}

// Track the resources following a declarative approach
if err := insertPluginMetaToConfig(p.config, pluginConfig{}); err != nil {
return err
}

return nil
}
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