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118 lines
3.3 KiB
118 lines
3.3 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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"fmt"
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"io"
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"github.com/gosuri/uitable"
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"github.com/spf13/cobra"
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"k8s.io/helm/pkg/helm"
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"k8s.io/helm/pkg/proto/hapi/chart"
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"k8s.io/helm/pkg/proto/hapi/release"
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"k8s.io/helm/pkg/timeconv"
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)
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var historyHelp = `
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History prints historical revisions for a given release.
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A default maximum of 256 revisions will be returned. Setting '--max'
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configures the maximum length of the revision list returned.
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The historical release set is printed as a formatted table, e.g:
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$ helm history angry-bird --max=4
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REVISION UPDATED STATUS CHART DESCRIPTION
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1 Mon Oct 3 10:15:13 2016 SUPERSEDED alpine-0.1.0 Initial install
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2 Mon Oct 3 10:15:13 2016 SUPERSEDED alpine-0.1.0 Upgraded successfully
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3 Mon Oct 3 10:15:13 2016 SUPERSEDED alpine-0.1.0 Rolled back to 2
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4 Mon Oct 3 10:15:13 2016 DEPLOYED alpine-0.1.0 Upgraded successfully
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`
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type historyCmd struct {
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max int32
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rls string
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out io.Writer
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helmc helm.Interface
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}
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func newHistoryCmd(c helm.Interface, w io.Writer) *cobra.Command {
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his := &historyCmd{out: w, helmc: c}
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cmd := &cobra.Command{
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Use: "history [flags] RELEASE_NAME",
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Long: historyHelp,
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Short: "fetch release history",
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Aliases: []string{"hist"},
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PreRunE: setupConnection,
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RunE: func(cmd *cobra.Command, args []string) error {
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switch {
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case len(args) == 0:
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return errReleaseRequired
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case his.helmc == nil:
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his.helmc = helm.NewClient(helm.Host(settings.TillerHost))
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}
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his.rls = args[0]
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return his.run()
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},
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}
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cmd.Flags().Int32Var(&his.max, "max", 256, "maximum number of revision to include in history")
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return cmd
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}
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func (cmd *historyCmd) run() error {
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r, err := cmd.helmc.ReleaseHistory(cmd.rls, helm.WithMaxHistory(cmd.max))
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if err != nil {
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return prettyError(err)
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}
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if len(r.Releases) == 0 {
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return nil
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}
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fmt.Fprintln(cmd.out, formatHistory(r.Releases))
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return nil
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}
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func formatHistory(rls []*release.Release) string {
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tbl := uitable.New()
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tbl.MaxColWidth = 60
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tbl.AddRow("REVISION", "UPDATED", "STATUS", "CHART", "DESCRIPTION")
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for i := len(rls) - 1; i >= 0; i-- {
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r := rls[i]
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c := formatChartname(r.Chart)
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t := timeconv.String(r.Info.LastDeployed)
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s := r.Info.Status.Code.String()
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v := r.Version
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d := r.Info.Description
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tbl.AddRow(v, t, s, c, d)
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}
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return tbl.String()
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}
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func formatChartname(c *chart.Chart) string {
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if c == nil || c.Metadata == nil {
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// This is an edge case that has happened in prod, though we don't
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// know how: https://github.com/kubernetes/helm/issues/1347
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return "MISSING"
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}
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return fmt.Sprintf("%s-%s", c.Metadata.Name, c.Metadata.Version)
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}
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