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helm/cmd/helm/install.go

123 lines
3.0 KiB

package main
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/spf13/cobra"
"github.com/kubernetes/helm/pkg/helm"
"github.com/kubernetes/helm/pkg/proto/hapi/release"
"github.com/kubernetes/helm/pkg/timeconv"
)
const installDesc = `
This command installs a chart archive.
The install argument must be either a relative
path to a chart directory or the name of a
chart in the current working directory.
`
// install flags & args
var (
// installArg is the name or relative path of the chart to install
installArg string
// installDryRun performs a dry-run install
installDryRun bool
// installValues is the filename of supplied values.
installValues string
// installRelName is the user-supplied release name.
installRelName string
)
var installCmd = &cobra.Command{
Use: "install [CHART]",
Short: "install a chart archive.",
Long: installDesc,
RunE: runInstall,
}
func init() {
f := installCmd.Flags()
f.StringVarP(&installValues, "values", "f", "", "path to a values TOML file")
f.StringVarP(&installRelName, "name", "n", "", "the release name. If unspecified, it will autogenerate one for you.")
f.BoolVar(&installDryRun, "dry-run", false, "simulate an install")
RootCommand.AddCommand(installCmd)
}
func runInstall(cmd *cobra.Command, args []string) error {
if err := checkArgsLength(1, len(args), "chart name"); err != nil {
return err
}
chartpath, err := locateChartPath(args[0])
if err != nil {
return err
}
if flagVerbose {
fmt.Printf("Chart path: %s\n", chartpath)
}
rawVals, err := vals()
if err != nil {
return err
}
res, err := helm.InstallRelease(rawVals, installRelName, chartpath, installDryRun)
if err != nil {
return prettyError(err)
}
printRelease(res.GetRelease())
return nil
}
func vals() ([]byte, error) {
if installValues == "" {
return []byte{}, nil
}
return ioutil.ReadFile(installValues)
}
func printRelease(rel *release.Release) {
if rel == nil {
return
}
if flagVerbose {
fmt.Printf("NAME: %s\n", rel.Name)
fmt.Printf("INFO: %s %s\n", timeconv.String(rel.Info.LastDeployed), rel.Info.Status)
fmt.Printf("CHART: %s %s\n", rel.Chart.Metadata.Name, rel.Chart.Metadata.Version)
fmt.Printf("MANIFEST: %s\n", rel.Manifest)
} else {
fmt.Println(rel.Name)
}
}
// locateChartPath looks for a chart directory in known places, and returns either the full path or an error.
//
// This does not ensure that the chart is well-formed; only that the requested filename exists.
//
// Order of resolution:
// - current working directory
// - if path is absolute or begins with '.', error out here
// - chart repos in $HELM_HOME
func locateChartPath(name string) (string, error) {
if _, err := os.Stat(name); err == nil {
return filepath.Abs(name)
}
if filepath.IsAbs(name) || strings.HasPrefix(name, ".") {
return name, fmt.Errorf("path %q not found", name)
}
crepo := filepath.Join(repositoryDirectory(), name)
if _, err := os.Stat(crepo); err == nil {
return filepath.Abs(crepo)
}
return name, fmt.Errorf("file %q not found", name)
}