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163 lines
4.1 KiB
163 lines
4.1 KiB
6 years ago
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/*
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Copyright The Helm Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package action
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import (
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"fmt"
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"io/ioutil"
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"os"
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"syscall"
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"github.com/Masterminds/semver"
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"github.com/pkg/errors"
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"github.com/spf13/pflag"
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"golang.org/x/crypto/ssh/terminal"
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"k8s.io/helm/pkg/chart"
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"k8s.io/helm/pkg/chart/loader"
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"k8s.io/helm/pkg/chartutil"
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"k8s.io/helm/pkg/provenance"
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)
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// Package is the action for packaging a chart.
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//
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// It provides the implementation of 'helm package'.
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type Package struct {
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ValueOptions
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Sign bool
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Key string
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Keyring string
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Version string
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AppVersion string
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Destination string
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DependencyUpdate bool
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}
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// NewPackage creates a new Package object with the given configuration.
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func NewPackage() *Package {
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return &Package{}
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}
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// Run executes 'helm package' against the given chart and returns the path to the packaged chart.
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func (p *Package) Run(path string) (string, error) {
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ch, err := loader.LoadDir(path)
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if err != nil {
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return "", err
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}
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validChartType, err := chartutil.IsValidChartType(ch)
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if !validChartType {
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return "", err
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}
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combinedVals, err := chartutil.CoalesceValues(ch, p.ValueOptions.rawValues)
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if err != nil {
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return "", err
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}
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ch.Values = combinedVals
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// If version is set, modify the version.
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if len(p.Version) != 0 {
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if err := setVersion(ch, p.Version); err != nil {
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return "", err
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}
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}
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if p.AppVersion != "" {
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ch.Metadata.AppVersion = p.AppVersion
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}
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if reqs := ch.Metadata.Dependencies; reqs != nil {
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if err := CheckDependencies(ch, reqs); err != nil {
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return "", err
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}
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}
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var dest string
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if p.Destination == "." {
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// Save to the current working directory.
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dest, err = os.Getwd()
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if err != nil {
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return "", err
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}
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} else {
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// Otherwise save to set destination
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dest = p.Destination
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}
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name, err := chartutil.Save(ch, dest)
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if err != nil {
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return "", errors.Wrap(err, "failed to save")
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}
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if p.Sign {
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err = p.Clearsign(name)
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}
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return "", err
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}
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func (p *Package) AddFlags(f *pflag.FlagSet) {
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f.BoolVar(&p.Sign, "sign", false, "use a PGP private key to sign this package")
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f.StringVar(&p.Key, "key", "", "name of the key to use when signing. Used if --sign is true")
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f.StringVar(&p.Keyring, "keyring", defaultKeyring(), "location of a public keyring")
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f.StringVar(&p.Version, "version", "", "set the version on the chart to this semver version")
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f.StringVar(&p.AppVersion, "app-version", "", "set the appVersion on the chart to this version")
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f.StringVarP(&p.Destination, "destination", "d", ".", "location to write the chart.")
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f.BoolVarP(&p.DependencyUpdate, "dependency-update", "u", false, `update dependencies from "Chart.yaml" to dir "charts/" before packaging`)
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p.ValueOptions.AddFlags(f)
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}
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func setVersion(ch *chart.Chart, ver string) error {
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// Verify that version is a Version, and error out if it is not.
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if _, err := semver.NewVersion(ver); err != nil {
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return err
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}
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// Set the version field on the chart.
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ch.Metadata.Version = ver
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return nil
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}
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func (p *Package) Clearsign(filename string) error {
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// Load keyring
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signer, err := provenance.NewFromKeyring(p.Keyring, p.Key)
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if err != nil {
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return err
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}
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if err := signer.DecryptKey(promptUser); err != nil {
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return err
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}
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sig, err := signer.ClearSign(filename)
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if err != nil {
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return err
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}
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return ioutil.WriteFile(filename+".prov", []byte(sig), 0755)
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}
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// promptUser implements provenance.PassphraseFetcher
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func promptUser(name string) ([]byte, error) {
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fmt.Printf("Password for key %q > ", name)
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pw, err := terminal.ReadPassword(int(syscall.Stdin))
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fmt.Println()
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return pw, err
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}
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