mirror of https://github.com/helm/helm
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
2.9 KiB
115 lines
2.9 KiB
/*
|
|
Copyright The Helm 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 action
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"sigs.k8s.io/yaml"
|
|
|
|
"helm.sh/helm/v3/pkg/chart"
|
|
"helm.sh/helm/v3/pkg/chart/loader"
|
|
"helm.sh/helm/v3/pkg/chartutil"
|
|
)
|
|
|
|
// ShowOutputFormat is the format of the output of `helm show`
|
|
type ShowOutputFormat string
|
|
|
|
const (
|
|
// ShowAll is the format which shows all the information of a chart
|
|
ShowAll ShowOutputFormat = "all"
|
|
// ShowChart is the format which only shows the chart's definition
|
|
ShowChart ShowOutputFormat = "chart"
|
|
// ShowValues is the format which only shows the chart's values
|
|
ShowValues ShowOutputFormat = "values"
|
|
// ShowReadme is the format which only shows the chart's README
|
|
ShowReadme ShowOutputFormat = "readme"
|
|
)
|
|
|
|
var readmeFileNames = []string{"readme.md", "readme.txt", "readme"}
|
|
|
|
func (o ShowOutputFormat) String() string {
|
|
return string(o)
|
|
}
|
|
|
|
// Show is the action for checking a given release's information.
|
|
//
|
|
// It provides the implementation of 'helm show' and its respective subcommands.
|
|
type Show struct {
|
|
OutputFormat ShowOutputFormat
|
|
ChartPathOptions
|
|
}
|
|
|
|
// NewShow creates a new Show object with the given configuration.
|
|
func NewShow(output ShowOutputFormat) *Show {
|
|
return &Show{
|
|
OutputFormat: output,
|
|
}
|
|
}
|
|
|
|
// Run executes 'helm show' against the given release.
|
|
func (s *Show) Run(chartpath string) (string, error) {
|
|
var out strings.Builder
|
|
chrt, err := loader.Load(chartpath)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
cf, err := yaml.Marshal(chrt.Metadata)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if s.OutputFormat == ShowChart || s.OutputFormat == ShowAll {
|
|
fmt.Fprintf(&out, "%s\n", cf)
|
|
}
|
|
|
|
if (s.OutputFormat == ShowValues || s.OutputFormat == ShowAll) && chrt.Values != nil {
|
|
if s.OutputFormat == ShowAll {
|
|
fmt.Fprintln(&out, "---")
|
|
}
|
|
for _, f := range chrt.Raw {
|
|
if f.Name == chartutil.ValuesfileName {
|
|
fmt.Fprintln(&out, string(f.Data))
|
|
}
|
|
}
|
|
}
|
|
|
|
if s.OutputFormat == ShowReadme || s.OutputFormat == ShowAll {
|
|
if s.OutputFormat == ShowAll {
|
|
fmt.Fprintln(&out, "---")
|
|
}
|
|
readme := findReadme(chrt.Files)
|
|
if readme == nil {
|
|
return out.String(), nil
|
|
}
|
|
fmt.Fprintf(&out, "%s\n", readme.Data)
|
|
}
|
|
return out.String(), nil
|
|
}
|
|
|
|
func findReadme(files []*chart.File) (file *chart.File) {
|
|
for _, file := range files {
|
|
for _, n := range readmeFileNames {
|
|
if strings.EqualFold(file.Name, n) {
|
|
return file
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|