/**
* 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.forge.kubernetes;
import io.fabric8.utils.Filter;
import io.fabric8.kubernetes.api.Kubernetes;
import io.fabric8.kubernetes.api.KubernetesHelper;
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.utils.TablePrinter;
import org.jboss.forge.addon.ui.context.UIBuilder;
import org.jboss.forge.addon.ui.context.UIContext;
import org.jboss.forge.addon.ui.context.UIExecutionContext;
import org.jboss.forge.addon.ui.input.UIInput;
import org.jboss.forge.addon.ui.metadata.UICommandMetadata;
import org.jboss.forge.addon.ui.metadata.WithAttributes;
import org.jboss.forge.addon.ui.result.Result;
import org.jboss.forge.addon.ui.util.Categories;
import org.jboss.forge.addon.ui.util.Metadata;
import javax.inject.Inject;
import java.io.PrintStream;
import java.util.Collections;
import java.util.List;
import static io.fabric8.kubernetes.api.KubernetesHelper.toPositiveNonZeroText;
/**
* Command to list replication controllers in kubernetes
*/
public class ReplicationControllerList extends AbstractKubernetesCommand {
@Inject
@WithAttributes(name = "filter", label = "The text filter used to filter pods using label selectors")
UIInput<String> filterText;
@Override
public UICommandMetadata getMetadata(UIContext context) {
return Metadata.from(super.getMetadata(context), getClass())
.category(Categories.create(CATEGORY))
.name(CATEGORY + ": Replication Controller List")
.description("Lists the replication controllers in a kubernetes cloud");
}
@Override
public void initializeUI(UIBuilder builder) throws Exception {
super.initializeUI(builder);
builder.add(filterText);
}
@Override
public Result execute(UIExecutionContext uiExecutionContext) throws Exception {
Kubernetes kubernetes = getKubernetes();
ReplicationControllerListSchema replicationControllers = kubernetes.getReplicationControllers();
printReplicationControllers(replicationControllers, System.out);
return null;
}
private void printReplicationControllers(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 = KubernetesHelper.createReplicationControllerFilter(filterText.getValue());
for (ReplicationControllerSchema item : items) {
if (filter.matches(item)) {
String id = item.getId();
String labels = KubernetesHelper.toLabelsString(item.getLabels());
Integer replicas = null;
ControllerDesiredState desiredState = item.getDesiredState();
ControllerCurrentState currentState = item.getCurrentState();
String selector = null;
if (desiredState != null) {
selector = KubernetesHelper.toLabelsString(desiredState.getReplicaSelector());
}
if (currentState != null) {
replicas = currentState.getReplicas();
}
table.row(id, labels, toPositiveNonZeroText(replicas), selector);
}
}
table.print();
}
}