protected static void listReplicationControllers(Kubernetes kube) {
System.out.println("Looking up replicationControllers");
ReplicationControllerList replicationControllers =
kube.getReplicationControllers(Kubernetes.NAMESPACE_ALL);
List<ReplicationController> items = replicationControllers.getItems();
for (ReplicationController item : items) {
ReplicationControllerState desiredState = item.getDesiredState();
if (desiredState != null) {
System.out.println(
"ReplicationController "
+ getId(item)
+ " labels: "
+ item.getLabels()
+ " replicas: "
+ desiredState.getReplicas()
+ " replicatorSelector: "
+ desiredState.getReplicaSelector()
+ " podTemplate: "
+ desiredState.getPodTemplate());
} else {
System.out.println(
"ReplicationController "
+ getId(item)
+ " labels: "
+ item.getLabels()
+ " no desiredState");
}
}
System.out.println();
}
@Override
public ReplicationController updateImage(String image) {
ReplicationController oldRC = get();
if (oldRC == null) {
throw new KubernetesClientException("Existing replication controller doesn't exist");
}
if (oldRC.getSpec().getTemplate().getSpec().getContainers().size() > 1) {
throw new KubernetesClientException("Image update is not supported for multicontainer pods");
}
if (oldRC.getSpec().getTemplate().getSpec().getContainers().size() == 0) {
throw new KubernetesClientException("Pod has no containers!");
}
Container updatedContainer =
new ContainerBuilder(
oldRC.getSpec().getTemplate().getSpec().getContainers().iterator().next())
.withImage(image)
.build();
ReplicationControllerBuilder newRCBuilder = new ReplicationControllerBuilder(oldRC);
newRCBuilder
.editMetadata()
.withResourceVersion(null)
.endMetadata()
.editSpec()
.editTemplate()
.editSpec()
.withContainers(Collections.singletonList(updatedContainer))
.endSpec()
.endTemplate()
.endSpec();
return new RollingUpdater(client, config, namespace).rollUpdate(oldRC, newRCBuilder.build());
}