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kubeadm: use the helper NewValidJoin() in join.go

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Instead of using kubeadmutil.CheckErr() in every single
phase of cmd.Run(), use a new helper function
NewValidJoin() that returns a single error.

This would improve the unit testing options for this file.
Otherwise any error in cmd.Run() will trigger an os.Exit()
as kubeadmutil.CheckErr() does that.
This commit is contained in:
Lubomir I. Ivanov 2018-03-16 18:48:52 +02:00
parent 3fb88a23d9
commit 01377eeaf6
1 changed files with 22 additions and 15 deletions
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37
cmd/kubeadm/app/cmd/join.go
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@ -115,21 +115,7 @@ func NewCmdJoin(out io.Writer) *cobra.Command {
Short: "Run this on any machine you wish to join an existing cluster",
Long: joinLongDescription,
Run: func(cmd *cobra.Command, args []string) {
cfg.DiscoveryTokenAPIServers = args
var err error
if cfg.FeatureGates, err = features.NewFeatureGate(&features.InitFeatureGates, featureGatesString); err != nil {
kubeadmutil.CheckErr(err)
}
legacyscheme.Scheme.Default(cfg)
internalcfg := &kubeadmapi.NodeConfiguration{}
legacyscheme.Scheme.Convert(cfg, internalcfg, nil)
ignorePreflightErrorsSet, err := validation.ValidateIgnorePreflightErrors(ignorePreflightErrors, skipPreFlight)
kubeadmutil.CheckErr(err)
j, err := NewJoin(cfgPath, args, internalcfg, ignorePreflightErrorsSet)
j, err := NewValidJoin(cfg, args, skipPreFlight, cfgPath, featureGatesString, ignorePreflightErrors)
kubeadmutil.CheckErr(err)
kubeadmutil.CheckErr(j.Validate(cmd))
kubeadmutil.CheckErr(j.Run(out))
@ -142,6 +128,27 @@ func NewCmdJoin(out io.Writer) *cobra.Command {
return cmd
}
// NewValidJoin validates the command line that are passed to the cobra command
func NewValidJoin(cfg *kubeadmapiext.NodeConfiguration, args []string, skipPreFlight bool, cfgPath, featureGatesString string, ignorePreflightErrors []string) (*Join, error) {
cfg.DiscoveryTokenAPIServers = args
var err error
if cfg.FeatureGates, err = features.NewFeatureGate(&features.InitFeatureGates, featureGatesString); err != nil {
return nil, err
}
legacyscheme.Scheme.Default(cfg)
internalcfg := &kubeadmapi.NodeConfiguration{}
legacyscheme.Scheme.Convert(cfg, internalcfg, nil)
ignorePreflightErrorsSet, err := validation.ValidateIgnorePreflightErrors(ignorePreflightErrors, skipPreFlight)
if err != nil {
return nil, err
}
return NewJoin(cfgPath, args, internalcfg, ignorePreflightErrorsSet)
}
// AddJoinConfigFlags adds join flags bound to the config to the specified flagset
func AddJoinConfigFlags(flagSet *flag.FlagSet, cfg *kubeadmapiext.NodeConfiguration, featureGatesString *string) {
flagSet.StringVar(