forked from operator-framework/helm-operator-plugins
/
crd_sample.go
93 lines (76 loc) · 2.3 KB
/
crd_sample.go
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/*
Copyright 2018 The Kubernetes Authors.
Modifications copyright 2020 The Operator-SDK 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 samples
import (
"fmt"
"path/filepath"
"strings"
"text/template"
"helm.sh/helm/v3/pkg/chart"
"sigs.k8s.io/kubebuilder/v2/pkg/model/file"
"sigs.k8s.io/yaml"
)
var _ file.Template = &CRDSample{}
var _ file.UseCustomFuncMap = &CRDSample{}
// CRDSample scaffolds a manifest for CRD sample.
type CRDSample struct {
file.TemplateMixin
file.ResourceMixin
ChartPath string
Chart *chart.Chart
Spec string
}
// SetTemplateDefaults implements input.Template
func (f *CRDSample) SetTemplateDefaults() error {
if f.Path == "" {
f.Path = filepath.Join("config", "samples", "%[group]_%[version]_%[kind].yaml")
}
f.Path = f.Resource.Replacer().Replace(f.Path)
f.IfExistsAction = file.Error
if len(f.Spec) == 0 {
f.Spec = defaultSpecTemplate
if f.Chart != nil {
spec, err := yaml.Marshal(f.Chart.Values)
if err != nil {
return fmt.Errorf("failed to get chart values: %v", err)
}
comment := ""
if len(f.ChartPath) != 0 {
comment = fmt.Sprintf("# Default values copied from <project_dir>/%s/values.yaml\n", f.ChartPath)
}
f.Spec = fmt.Sprintf("%s%s\n", comment, string(spec))
}
}
f.TemplateBody = crdSampleTemplate
return nil
}
func indent(spaces int, v string) string {
pad := strings.Repeat(" ", spaces)
return pad + strings.Replace(v, "\n", "\n"+pad, -1)
}
// GetFuncMap implements file.UseCustomFuncMap
func (f *CRDSample) GetFuncMap() template.FuncMap {
fm := file.DefaultFuncMap()
fm["indent"] = indent
return fm
}
const defaultSpecTemplate = `foo: bar
`
const crdSampleTemplate = `apiVersion: {{ .Resource.Domain }}/{{ .Resource.Version }}
kind: {{ .Resource.Kind }}
metadata:
name: {{ lower .Resource.Kind }}-sample
spec:
{{ .Spec | indent 2 }}
`