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123 lines
2.9 KiB
123 lines
2.9 KiB
/*
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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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"path/filepath"
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"strings"
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"github.com/pkg/errors"
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"helm.sh/helm/pkg/chartutil"
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"helm.sh/helm/pkg/cli"
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"helm.sh/helm/pkg/downloader"
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"helm.sh/helm/pkg/getter"
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"helm.sh/helm/pkg/repo"
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)
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// Pull is the action for checking a given release's information.
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//
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// It provides the implementation of 'helm pull'.
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type Pull struct {
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ChartPathOptions
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Settings *cli.EnvSettings // TODO: refactor this out of pkg/action
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Devel bool
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Untar bool
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VerifyLater bool
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UntarDir string
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DestDir string
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}
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// NewPull creates a new Pull object with the given configuration.
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func NewPull() *Pull {
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return &Pull{}
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}
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// Run executes 'helm pull' against the given release.
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func (p *Pull) Run(chartRef string) (string, error) {
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var out strings.Builder
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c := downloader.ChartDownloader{
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Out: &out,
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Keyring: p.Keyring,
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Verify: downloader.VerifyNever,
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Getters: getter.All(p.Settings),
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Options: []getter.Option{
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getter.WithBasicAuth(p.Username, p.Password),
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},
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}
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if p.Verify {
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c.Verify = downloader.VerifyAlways
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} else if p.VerifyLater {
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c.Verify = downloader.VerifyLater
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}
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// If untar is set, we fetch to a tempdir, then untar and copy after
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// verification.
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dest := p.DestDir
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if p.Untar {
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var err error
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dest, err = ioutil.TempDir("", "helm-")
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if err != nil {
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return out.String(), errors.Wrap(err, "failed to untar")
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}
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defer os.RemoveAll(dest)
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}
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if p.RepoURL != "" {
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chartURL, err := repo.FindChartInAuthRepoURL(p.RepoURL, p.Username, p.Password, chartRef, p.Version, p.CertFile, p.KeyFile, p.CaFile, getter.All(p.Settings))
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if err != nil {
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return out.String(), err
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}
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chartRef = chartURL
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}
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saved, v, err := c.DownloadTo(chartRef, p.Version, dest)
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if err != nil {
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return out.String(), err
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}
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if p.Verify {
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fmt.Fprintf(&out, "Verification: %v\n", v)
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}
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// After verification, untar the chart into the requested directory.
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if p.Untar {
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ud := p.UntarDir
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if !filepath.IsAbs(ud) {
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ud = filepath.Join(p.DestDir, ud)
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}
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if fi, err := os.Stat(ud); err != nil {
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if err := os.MkdirAll(ud, 0755); err != nil {
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return out.String(), errors.Wrap(err, "failed to untar (mkdir)")
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}
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} else if !fi.IsDir() {
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return out.String(), errors.Errorf("failed to untar: %s is not a directory", ud)
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}
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return out.String(), chartutil.ExpandFile(ud, saved)
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}
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return out.String(), nil
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}
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