/**
* Copyright 2005-2014 Red Hat, Inc.
*
* Red Hat licenses this file to you under the Apache License, version
* 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package io.fabric8.kubernetes.provider.commands;
import io.fabric8.utils.Filter;
import io.fabric8.utils.Objects;
import io.fabric8.kubernetes.api.Kubernetes;
import io.fabric8.kubernetes.api.model.ControllerCurrentState;
import io.fabric8.kubernetes.api.model.ControllerDesiredState;
import io.fabric8.kubernetes.api.model.ReplicationControllerListSchema;
import io.fabric8.kubernetes.api.model.ReplicationControllerSchema;
import io.fabric8.kubernetes.provider.KubernetesHelpers;
import io.fabric8.kubernetes.provider.KubernetesService;
import io.fabric8.utils.TablePrinter;
import org.apache.felix.gogo.commands.Argument;
import org.apache.felix.gogo.commands.Command;
import org.apache.karaf.shell.console.AbstractAction;
import java.io.PrintStream;
import java.util.Collections;
import java.util.List;
import static io.fabric8.kubernetes.provider.KubernetesHelpers.toPositiveNonZeroText;
@Command(name = ReplicationControllerList.FUNCTION_VALUE, scope = "fabric",
description = ReplicationControllerList.DESCRIPTION)
public class ReplicationControllerListAction extends AbstractAction {
@Argument(index = 0, name = "filter", description = "The label filter", required = false)
String filterText = null;
private final KubernetesService kubernetesService;
public ReplicationControllerListAction(KubernetesService kubernetesService) {
this.kubernetesService = kubernetesService;
}
@Override
protected Object doExecute() throws Exception {
Kubernetes kubernetes = kubernetesService.getKubernetes();
Objects.notNull(kubernetes, "kubernetes");
ReplicationControllerListSchema replicationControllers = kubernetes.getReplicationControllers();
printContainers(replicationControllers, System.out);
return null;
}
private void printContainers(ReplicationControllerListSchema replicationControllers, PrintStream out) {
TablePrinter table = new TablePrinter();
table.columns("id", "labels", "replicas", "replica selector");
List<ReplicationControllerSchema> items = replicationControllers.getItems();
if (items == null) {
items = Collections.EMPTY_LIST;
}
Filter<ReplicationControllerSchema> filter = KubernetesHelpers.createReplicationControllerFilter(filterText);
for (ReplicationControllerSchema item : items) {
if (filter.matches(item)) {
String id = item.getId();
String labels = KubernetesHelpers.toLabelsString(item.getLabels());
Integer replicas = null;
ControllerDesiredState desiredState = item.getDesiredState();
ControllerCurrentState currentState = item.getCurrentState();
String selector = null;
if (desiredState != null) {
selector = KubernetesHelpers.toLabelsString(desiredState.getReplicaSelector());
}
if (currentState != null) {
replicas = currentState.getReplicas();
}
table.row(id, labels, toPositiveNonZeroText(replicas), selector);
}
}
table.print();
}
}