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.
94 lines
2.6 KiB
94 lines
2.6 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 chartutil
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"github.com/pkg/errors"
|
|
"sigs.k8s.io/yaml"
|
|
|
|
"helm.sh/helm/v3/pkg/chart"
|
|
)
|
|
|
|
// LoadChartfile loads a Chart.yaml file into a *chart.Metadata.
|
|
func LoadChartfile(filename string) (*chart.Metadata, error) {
|
|
b, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
y := new(chart.Metadata)
|
|
err = yaml.Unmarshal(b, y)
|
|
return y, err
|
|
}
|
|
|
|
// SaveChartfile saves the given metadata as a Chart.yaml file at the given path.
|
|
//
|
|
// 'filename' should be the complete path and filename ('foo/Chart.yaml')
|
|
func SaveChartfile(filename string, cf *chart.Metadata) error {
|
|
// Pull out the dependencies of a v1 Chart, since there's no way
|
|
// to tell the serialiser to skip a field for just this use case
|
|
savedDependencies := cf.Dependencies
|
|
if cf.APIVersion == chart.APIVersionV1 {
|
|
cf.Dependencies = nil
|
|
}
|
|
out, err := yaml.Marshal(cf)
|
|
if cf.APIVersion == chart.APIVersionV1 {
|
|
cf.Dependencies = savedDependencies
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return ioutil.WriteFile(filename, out, 0644)
|
|
}
|
|
|
|
// IsChartDir validate a chart directory.
|
|
//
|
|
// Checks for a valid Chart.yaml.
|
|
func IsChartDir(dirName string) (bool, error) {
|
|
if fi, err := os.Stat(dirName); err != nil {
|
|
return false, err
|
|
} else if !fi.IsDir() {
|
|
return false, errors.Errorf("%q is not a directory", dirName)
|
|
}
|
|
|
|
chartYaml := filepath.Join(dirName, ChartfileName)
|
|
if _, err := os.Stat(chartYaml); os.IsNotExist(err) {
|
|
return false, errors.Errorf("no %s exists in directory %q", ChartfileName, dirName)
|
|
}
|
|
|
|
chartYamlContent, err := ioutil.ReadFile(chartYaml)
|
|
if err != nil {
|
|
return false, errors.Errorf("cannot read %s in directory %q", ChartfileName, dirName)
|
|
}
|
|
|
|
chartContent := new(chart.Metadata)
|
|
if err := yaml.Unmarshal(chartYamlContent, &chartContent); err != nil {
|
|
return false, err
|
|
}
|
|
if chartContent == nil {
|
|
return false, errors.Errorf("chart metadata (%s) missing", ChartfileName)
|
|
}
|
|
if chartContent.Name == "" {
|
|
return false, errors.Errorf("invalid chart (%s): name must not be empty", ChartfileName)
|
|
}
|
|
|
|
return true, nil
|
|
}
|