// Returns an RC that matches the intent of the given deployment.
// It creates a new RC if required.
func (d *DeploymentController) getNewRC(deployment extensions.Deployment) (*api.ReplicationController, error) {
existingNewRC, err := deploymentutil.GetNewRC(deployment, d.client)
if err != nil || existingNewRC != nil {
return existingNewRC, err
}
// new RC does not exist, create one.
namespace := deployment.ObjectMeta.Namespace
podTemplateSpecHash := deploymentutil.GetPodTemplateSpecHash(deployment.Spec.Template)
newRCTemplate := deploymentutil.GetNewRCTemplate(deployment)
// Add podTemplateHash label to selector.
newRCSelector := deploymentutil.CloneAndAddLabel(deployment.Spec.Selector, deployment.Spec.UniqueLabelKey, podTemplateSpecHash)
newRC := api.ReplicationController{
ObjectMeta: api.ObjectMeta{
GenerateName: deployment.Name + "-",
Namespace: namespace,
},
Spec: api.ReplicationControllerSpec{
Replicas: 0,
Selector: newRCSelector,
Template: &newRCTemplate,
},
}
createdRC, err := d.client.ReplicationControllers(namespace).Create(&newRC)
if err != nil {
return nil, fmt.Errorf("error creating replication controller: %v", err)
}
return createdRC, nil
}
// Returns an RC that matches the intent of the given deployment.
// It creates a new RC if required.
func (dc *DeploymentController) getNewRC(deployment extensions.Deployment) (*api.ReplicationController, error) {
existingNewRC, err := deploymentutil.GetNewRCFromList(deployment, dc.client,
func(namespace string, options api.ListOptions) ([]api.ReplicationController, error) {
return dc.rcStore.List()
})
if err != nil || existingNewRC != nil {
return existingNewRC, err
}
// Check the rc expectations of deployment before creating a new rc
dKey, err := controller.KeyFunc(&deployment)
if err != nil {
return nil, fmt.Errorf("couldn't get key for deployment %#v: %v", deployment, err)
}
if !dc.rcExpectations.SatisfiedExpectations(dKey) {
dc.enqueueDeployment(&deployment)
return nil, fmt.Errorf("RC expectations not met yet before getting new RC\n")
}
// new RC does not exist, create one.
namespace := deployment.ObjectMeta.Namespace
podTemplateSpecHash := deploymentutil.GetPodTemplateSpecHash(deployment.Spec.Template)
newRCTemplate := deploymentutil.GetNewRCTemplate(deployment)
// Add podTemplateHash label to selector.
newRCSelector := deploymentutil.CloneAndAddLabel(deployment.Spec.Selector, deployment.Spec.UniqueLabelKey, podTemplateSpecHash)
// Set RC expectations (1 rc should be created)
dKey, err = controller.KeyFunc(&deployment)
if err != nil {
return nil, fmt.Errorf("couldn't get key for deployment controller %#v: %v", deployment, err)
}
dc.rcExpectations.ExpectCreations(dKey, 1)
// Create new RC
newRC := api.ReplicationController{
ObjectMeta: api.ObjectMeta{
GenerateName: deployment.Name + "-",
Namespace: namespace,
},
Spec: api.ReplicationControllerSpec{
Replicas: 0,
Selector: newRCSelector,
Template: &newRCTemplate,
},
}
createdRC, err := dc.client.ReplicationControllers(namespace).Create(&newRC)
if err != nil {
dc.rcExpectations.DeleteExpectations(dKey)
return nil, fmt.Errorf("error creating replication controller: %v", err)
}
return createdRC, nil
}