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root.go
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root.go
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package cmd
import (
"fmt"
"io"
"os"
"github.com/giantswarm/microerror"
"github.com/giantswarm/micrologger"
"github.com/spf13/afero"
"github.com/spf13/cobra"
"k8s.io/client-go/tools/clientcmd"
"github.com/giantswarm/kubectl-gs/cmd/get"
"github.com/giantswarm/kubectl-gs/cmd/login"
"github.com/giantswarm/kubectl-gs/cmd/template"
"github.com/giantswarm/kubectl-gs/cmd/validate"
"github.com/giantswarm/kubectl-gs/pkg/project"
)
const (
// Hack to set base command name as 'kubectl gs', since
// cobra splits all the words in the 'usage' field and
// only prints the first word. The splitting is done by
// space characters (' '), and we trick it by using a
// NBSP character (NBSP) between the 2 words.
name = "kubectl\u00a0gs"
description = `Your user-friendly kubectl plug-in for the Giant Swarm management cluster.
Get more information at https://docs.giantswarm.io/ui-api/kubectl-gs/
`
)
type Config struct {
Logger micrologger.Logger
FileSystem afero.Fs
K8sConfigAccess clientcmd.ConfigAccess
Stderr io.Writer
Stdout io.Writer
}
func New(config Config) (*cobra.Command, error) {
if config.Logger == nil {
return nil, microerror.Maskf(invalidConfigError, "%T.Logger must not be empty", config)
}
if config.FileSystem == nil {
return nil, microerror.Maskf(invalidConfigError, "%T.FileSystem must not be empty", config)
}
if config.K8sConfigAccess == nil {
return nil, microerror.Maskf(invalidConfigError, "%T.K8sConfigAccess must not be empty", config)
}
if config.Stderr == nil {
config.Stderr = os.Stderr
}
if config.Stdout == nil {
config.Stdout = os.Stdout
}
var err error
var loginCmd *cobra.Command
{
c := login.Config{
Logger: config.Logger,
FileSystem: config.FileSystem,
K8sConfigAccess: config.K8sConfigAccess,
Stderr: config.Stderr,
Stdout: config.Stdout,
}
loginCmd, err = login.New(c)
if err != nil {
return nil, microerror.Mask(err)
}
}
var templateCmd *cobra.Command
{
c := template.Config{
Logger: config.Logger,
Stderr: config.Stderr,
Stdout: config.Stdout,
}
templateCmd, err = template.New(c)
if err != nil {
return nil, microerror.Mask(err)
}
}
var getCmd *cobra.Command
{
c := get.Config{
Logger: config.Logger,
FileSystem: config.FileSystem,
K8sConfigAccess: config.K8sConfigAccess,
Stderr: config.Stderr,
Stdout: config.Stdout,
}
getCmd, err = get.New(c)
if err != nil {
return nil, microerror.Mask(err)
}
}
var validateCmd *cobra.Command
{
c := validate.Config{
Logger: config.Logger,
K8sConfigAccess: config.K8sConfigAccess,
Stderr: config.Stderr,
Stdout: config.Stdout,
}
validateCmd, err = validate.New(c)
if err != nil {
return nil, microerror.Mask(err)
}
}
f := &flag{}
r := &runner{
flag: f,
logger: config.Logger,
stderr: config.Stderr,
stdout: config.Stdout,
}
c := &cobra.Command{
Use: name,
Short: description,
Long: description,
RunE: r.Run,
SilenceUsage: true,
SilenceErrors: true,
Version: project.Version(),
Args: func(cmd *cobra.Command, args []string) error {
if len(args) > 0 {
return fmt.Errorf("unknown command %q for %s", args[0], cmd.CommandPath())
}
return nil
},
}
f.Init(c)
c.AddCommand(loginCmd)
c.AddCommand(templateCmd)
c.AddCommand(getCmd)
c.AddCommand(validateCmd)
return c, nil
}