// newHelper makes a hew helper using real clients.
func newHelper(oClient client.Interface, kClient kclient.Interface) *helper {
return &helper{
generateRollback: func(namespace string, config *deployapi.DeploymentConfigRollback) (*deployapi.DeploymentConfig, error) {
return oClient.DeploymentConfigs(namespace).Rollback(config)
},
describe: func(config *deployapi.DeploymentConfig) (string, error) {
describer := describe.NewDeploymentConfigDescriberForConfig(oClient, kClient, config)
return describer.Describe(config.Namespace, config.Name)
},
updateConfig: func(namespace string, config *deployapi.DeploymentConfig) (*deployapi.DeploymentConfig, error) {
return oClient.DeploymentConfigs(namespace).Update(config)
},
}
}
// Run performs a rollback.
func (o *RollbackOptions) Run() error {
// Get the resource referenced in the command args.
obj, err := o.findResource(o.TargetName)
if err != nil {
return err
}
// Interpret the resource to resolve a target for rollback.
var target *kapi.ReplicationController
switch r := obj.(type) {
case *kapi.ReplicationController:
// A specific deployment was used.
target = r
case *deployapi.DeploymentConfig:
// A deploymentconfig was used. Find the target deployment by the
// specified version, or by a lookup of the last completed deployment if
// no version was supplied.
deployment, err := o.findTargetDeployment(r, o.DesiredVersion)
if err != nil {
return err
}
target = deployment
}
if target == nil {
return fmt.Errorf("%s is not a valid deployment or deploymentconfig", o.TargetName)
}
// Set up the rollback and generate a new rolled back config.
rollback := &deployapi.DeploymentConfigRollback{
Spec: deployapi.DeploymentConfigRollbackSpec{
From: kapi.ObjectReference{
Name: target.Name,
},
IncludeTemplate: true,
IncludeTriggers: o.IncludeTriggers,
IncludeStrategy: o.IncludeStrategy,
IncludeReplicationMeta: o.IncludeScalingSettings,
},
}
newConfig, err := o.oc.DeploymentConfigs(o.Namespace).Rollback(rollback)
if err != nil {
return err
}
// If this is a dry run, print and exit.
if o.DryRun {
describer := describe.NewDeploymentConfigDescriberForConfig(o.oc, o.kc, newConfig)
description, err := describer.Describe(newConfig.Namespace, newConfig.Name)
if err != nil {
return err
}
o.out.Write([]byte(description))
return nil
}
// If an output format is specified, print and exit.
if len(o.Format) > 0 {
printer, _, err := kubectl.GetPrinter(o.Format, o.Template)
if err != nil {
return err
}
versionedPrinter := kubectl.NewVersionedPrinter(printer, kapi.Scheme, latest.Version)
versionedPrinter.PrintObj(newConfig, o.out)
return nil
}
// Perform a real rollback.
rolledback, err := o.oc.DeploymentConfigs(newConfig.Namespace).Update(newConfig)
if err != nil {
return err
}
// Print warnings about any image triggers disabled during the rollback.
fmt.Fprintf(o.out, "#%d rolled back to %s\n", rolledback.LatestVersion, rollback.Spec.From.Name)
for _, trigger := range rolledback.Triggers {
disabled := []string{}
if trigger.Type == deployapi.DeploymentTriggerOnImageChange && !trigger.ImageChangeParams.Automatic {
disabled = append(disabled, trigger.ImageChangeParams.From.Name)
}
if len(disabled) > 0 {
reenable := fmt.Sprintf("oc deploy %s --enable-triggers -n %s", rolledback.Name, o.Namespace)
fmt.Fprintf(o.out, "Warning: the following images triggers were disabled: %s\n You can re-enable them with: %s\n", strings.Join(disabled, ","), reenable)
}
}
return nil
}
