// GetReplicationController returns the most recent replication controller associated with the deploymentConfig
// with the provided namespace/name combination
func (c *realScalerClient) GetReplicationController(namespace, name string) (*kapi.ReplicationController, error) {
dc, err := c.oc.DeploymentConfigs(namespace).Get(name)
if err != nil {
return nil, err
}
rcName = util.LatestDeploymentNameForConfig(dc)
return c.kc.ReplicationControllers(namespace).Get(rcName)
}
// Describe returns the description of a DeploymentConfig
func (d *DeploymentConfigDescriber) Describe(namespace, name string) (string, error) {
deploymentConfig, err := d.client.getDeploymentConfig(namespace, name)
if err != nil {
return "", err
}
events, err := d.client.listEvents(deploymentConfig)
if err != nil {
return "", err
}
return tabbedString(func(out *tabwriter.Writer) error {
formatMeta(out, deploymentConfig.ObjectMeta)
if deploymentConfig.LatestVersion == 0 {
formatString(out, "Latest Version", "Not deployed")
} else {
formatString(out, "Latest Version", strconv.Itoa(deploymentConfig.LatestVersion))
}
printTriggers(deploymentConfig.Triggers, out)
formatString(out, "Strategy", deploymentConfig.Template.Strategy.Type)
printStrategy(deploymentConfig.Template.Strategy, out)
printReplicationControllerSpec(deploymentConfig.Template.ControllerTemplate, out)
deploymentName := deployutil.LatestDeploymentNameForConfig(deploymentConfig)
deployment, err := d.client.getDeployment(namespace, deploymentName)
if err != nil {
if kerrors.IsNotFound(err) {
formatString(out, "Latest Deployment", "<none>")
} else {
formatString(out, "Latest Deployment", fmt.Sprintf("error: %v", err))
}
} else {
header := fmt.Sprintf("Deployment #%d (latest)", deployutil.DeploymentVersionFor(deployment))
printDeploymentRc(deployment, d.client, out, header, true)
}
deploymentsHistory, err := d.client.listDeployments(namespace, labels.Everything())
if err == nil {
sorted := rcSorter{}
sorted = append(sorted, deploymentsHistory.Items...)
sort.Sort(sorted)
for _, item := range sorted {
if item.Name != deploymentName && deploymentConfig.Name == deployutil.DeploymentConfigNameFor(&item) {
header := fmt.Sprintf("Deployment #%d", deployutil.DeploymentVersionFor(&item))
printDeploymentRc(&item, d.client, out, header, false)
}
}
}
if events != nil {
kctl.DescribeEvents(events, out)
}
return nil
})
}
// retry resets the status of the latest deployment to New, which will cause
// the deployment to be retried. An error is returned if the deployment is not
// currently in a failed state.
func (c *retryDeploymentCommand) retry(config *deployapi.DeploymentConfig, out io.Writer) error {
if config.LatestVersion == 0 {
return fmt.Errorf("no deployments found for %s/%s", config.Namespace, config.Name)
}
deploymentName := deployutil.LatestDeploymentNameForConfig(config)
deployment, err := c.client.GetDeployment(config.Namespace, deploymentName)
if err != nil {
if kerrors.IsNotFound(err) {
return fmt.Errorf("Unable to find the latest deployment (#%d).\nYou can start a new deployment using the --latest option.", config.LatestVersion)
}
return err
}
if status := deployutil.DeploymentStatusFor(deployment); status != deployapi.DeploymentStatusFailed {
message := fmt.Sprintf("#%d is %s; only failed deployments can be retried.\n", config.LatestVersion, status)
if status == deployapi.DeploymentStatusComplete {
message += fmt.Sprintf("You can start a new deployment using the --latest option.")
} else {
message += fmt.Sprintf("Optionally, you can cancel this deployment using the --cancel option.", config.LatestVersion)
}
return fmt.Errorf(message)
}
// Delete the deployer pod as well as the deployment hooks pods, if any
pods, err := c.client.ListDeployerPodsFor(config.Namespace, deploymentName)
if err != nil {
return fmt.Errorf("Failed to list deployer/hook pods for deployment #%d: %v", config.LatestVersion, err)
}
for _, pod := range pods.Items {
err := c.client.DeletePod(&pod)
if err != nil {
return fmt.Errorf("Failed to delete deployer/hook pod %s for deployment #%d: %v", pod.Name, config.LatestVersion, err)
}
}
deployment.Annotations[deployapi.DeploymentStatusAnnotation] = string(deployapi.DeploymentStatusNew)
// clear out the cancellation flag as well as any previous status-reason annotation
delete(deployment.Annotations, deployapi.DeploymentStatusReasonAnnotation)
delete(deployment.Annotations, deployapi.DeploymentCancelledAnnotation)
_, err = c.client.UpdateDeployment(deployment)
if err == nil {
fmt.Fprintf(out, "retried #%d\n", config.LatestVersion)
}
return err
}
// Describe returns the description of the latest deployments for a config
func (d *LatestDeploymentsDescriber) Describe(namespace, name string) (string, error) {
config, err := d.client.getDeploymentConfig(namespace, name)
if err != nil {
return "", err
}
var deployments []kapi.ReplicationController
if d.count == -1 || d.count > 1 {
list, err := d.client.listDeployments(namespace, labels.Everything())
if err != nil && !kerrors.IsNotFound(err) {
return "", err
}
deployments = list.Items
} else {
deploymentName := deployutil.LatestDeploymentNameForConfig(config)
deployment, err := d.client.getDeployment(config.Namespace, deploymentName)
if err != nil && !kerrors.IsNotFound(err) {
return "", err
}
if deployment != nil {
deployments = []kapi.ReplicationController{*deployment}
}
}
g := graph.New()
deploy := graph.DeploymentConfig(g, config)
if len(deployments) > 0 {
graph.JoinDeployments(deploy.(*graph.DeploymentConfigNode), deployments)
}
return tabbedString(func(out *tabwriter.Writer) error {
node := deploy.(*graph.DeploymentConfigNode)
descriptions := describeDeployments(node, d.count)
for i, description := range descriptions {
descriptions[i] = fmt.Sprintf("%v %v", name, description)
}
printLines(out, "", 0, descriptions...)
return nil
})
}
// deploy launches a new deployment unless there's already a deployment
// process in progress for config.
func (c *deployLatestCommand) deploy(config *deployapi.DeploymentConfig, out io.Writer) error {
deploymentName := deployutil.LatestDeploymentNameForConfig(config)
deployment, err := c.client.GetDeployment(config.Namespace, deploymentName)
if err != nil {
if !kerrors.IsNotFound(err) {
return err
}
} else {
// Reject attempts to start a concurrent deployment.
status := deployutil.DeploymentStatusFor(deployment)
if status != deployapi.DeploymentStatusComplete && status != deployapi.DeploymentStatusFailed {
return fmt.Errorf("#%d is already in progress (%s).\nOptionally, you can cancel this deployment using the --cancel option.", config.LatestVersion, status)
}
}
config.LatestVersion++
_, err = c.client.UpdateDeploymentConfig(config)
if err == nil {
fmt.Fprintf(out, "deployed #%d\n", config.LatestVersion)
}
return err
}
// Handle processes change triggers for config.
func (c *DeploymentConfigChangeController) Handle(config *deployapi.DeploymentConfig) error {
hasChangeTrigger := false
for _, trigger := range config.Triggers {
if trigger.Type == deployapi.DeploymentTriggerOnConfigChange {
hasChangeTrigger = true
break
}
}
if !hasChangeTrigger {
glog.V(4).Infof("Ignoring DeploymentConfig %s; no change triggers detected", deployutil.LabelForDeploymentConfig(config))
return nil
}
if config.LatestVersion == 0 {
_, _, err := c.generateDeployment(config)
if err != nil {
if kerrors.IsConflict(err) {
return fatalError(fmt.Sprintf("DeploymentConfig %s updated since retrieval; aborting trigger: %v", deployutil.LabelForDeploymentConfig(config), err))
}
c.recorder.Eventf(config, "failedCreate", "Couldn't create initial deployment: %v", err)
return fmt.Errorf("couldn't create initial Deployment for DeploymentConfig %s: %v", deployutil.LabelForDeploymentConfig(config), err)
}
glog.V(4).Infof("Created initial Deployment for DeploymentConfig %s", deployutil.LabelForDeploymentConfig(config))
return nil
}
latestDeploymentName := deployutil.LatestDeploymentNameForConfig(config)
deployment, err := c.changeStrategy.getDeployment(config.Namespace, latestDeploymentName)
if err != nil {
// If there's no deployment for the latest config, we have no basis of
// comparison. It's the responsibility of the deployment config controller
// to make the deployment for the config, so return early.
if kerrors.IsNotFound(err) {
glog.V(2).Infof("Ignoring change for DeploymentConfig %s; no existing Deployment found", deployutil.LabelForDeploymentConfig(config))
return nil
}
return fmt.Errorf("couldn't retrieve Deployment for DeploymentConfig %s: %v", deployutil.LabelForDeploymentConfig(config), err)
}
deployedConfig, err := c.decodeConfig(deployment)
if err != nil {
return fatalError(fmt.Sprintf("error decoding DeploymentConfig from Deployment %s for DeploymentConfig %s: %v", deployutil.LabelForDeployment(deployment), deployutil.LabelForDeploymentConfig(config), err))
}
newSpec, oldSpec := config.Template.ControllerTemplate.Template.Spec, deployedConfig.Template.ControllerTemplate.Template.Spec
if kapi.Semantic.DeepEqual(oldSpec, newSpec) {
glog.V(2).Infof("Ignoring DeploymentConfig change for %s (latestVersion=%d); same as Deployment %s", deployutil.LabelForDeploymentConfig(config), config.LatestVersion, deployutil.LabelForDeployment(deployment))
return nil
}
fromVersion, toVersion, err := c.generateDeployment(config)
if err != nil {
if kerrors.IsConflict(err) {
return fatalError(fmt.Sprintf("DeploymentConfig %s updated since retrieval; aborting trigger: %v", deployutil.LabelForDeploymentConfig(config), err))
}
return fmt.Errorf("couldn't generate deployment for DeploymentConfig %s: %v", deployutil.LabelForDeploymentConfig(config), err)
}
glog.V(4).Infof("Updated DeploymentConfig %s from version %d to %d for existing deployment %s", deployutil.LabelForDeploymentConfig(config), fromVersion, toVersion, deployutil.LabelForDeployment(deployment))
return nil
}