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135 lines
3.2 KiB
135 lines
3.2 KiB
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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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 main
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import (
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"errors"
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"io"
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"text/template"
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"time"
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"github.com/spf13/cobra"
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"k8s.io/helm/pkg/chartutil"
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"k8s.io/helm/pkg/helm"
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"k8s.io/helm/pkg/timeconv"
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)
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var getHelp = `
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This command shows the details of a named release.
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It can be used to get extended information about the release, including:
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- The values used to generate the release
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- The chart used to generate the release
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- The generated manifest file
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By default, this prints a human readable collection of information about the
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chart, the supplied values, and the generated manifest file.
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`
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var errReleaseRequired = errors.New("release name is required")
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type getCmd struct {
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release string
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out io.Writer
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client helm.Interface
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}
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func newGetCmd(client helm.Interface, out io.Writer) *cobra.Command {
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get := &getCmd{
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out: out,
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client: client,
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}
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cmd := &cobra.Command{
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Use: "get [flags] RELEASE_NAME",
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Short: "download a named release",
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Long: getHelp,
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PersistentPreRunE: setupConnection,
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RunE: func(cmd *cobra.Command, args []string) error {
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if len(args) == 0 {
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return errReleaseRequired
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}
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get.release = args[0]
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if get.client == nil {
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get.client = helm.NewClient(helm.Host(tillerHost))
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}
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return get.run()
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},
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}
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cmd.AddCommand(newGetValuesCmd(nil, out))
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cmd.AddCommand(newGetManifestCmd(nil, out))
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cmd.AddCommand(newGetHooksCmd(nil, out))
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return cmd
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}
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var getTemplate = `VERSION: {{.Release.Version}}
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RELEASED: {{.ReleaseDate}}
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CHART: {{.Release.Chart.Metadata.Name}}-{{.Release.Chart.Metadata.Version}}
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USER-SUPPLIED VALUES:
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{{.Release.Config.Raw}}
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COMPUTED VALUES:
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{{.ComputedValues}}
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HOOKS:
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{{- range .Release.Hooks }}
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---
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# {{.Name}}
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{{.Manifest}}
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{{- end }}
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MANIFEST:
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{{.Release.Manifest}}
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`
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// getCmd is the command that implements 'helm get'
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func (g *getCmd) run() error {
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res, err := g.client.ReleaseContent(g.release)
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if err != nil {
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return prettyError(err)
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}
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cfg, err := chartutil.CoalesceValues(res.Release.Chart, res.Release.Config)
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if err != nil {
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return err
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}
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cfgStr, err := cfg.YAML()
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if err != nil {
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return err
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}
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data := map[string]interface{}{
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"Release": res.Release,
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"ComputedValues": cfgStr,
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"ReleaseDate": timeconv.Format(res.Release.Info.LastDeployed, time.ANSIC),
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}
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return tpl(getTemplate, data, g.out)
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}
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func tpl(t string, vals map[string]interface{}, out io.Writer) error {
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tt, err := template.New("_").Parse(t)
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if err != nil {
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return err
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}
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return tt.Execute(out, vals)
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}
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func ensureHelmClient(h helm.Interface) helm.Interface {
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if h != nil {
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return h
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}
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return helm.NewClient(helm.Host(tillerHost))
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}
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