io.fabric8.forge.kubernetes.PodsList Maven / Gradle / Ivy

Go to download
/**
 *  Copyright 2005-2015 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.kubernetes.api.KubernetesHelper;
import io.fabric8.kubernetes.api.model.Container;
import io.fabric8.kubernetes.api.model.Pod;
import io.fabric8.kubernetes.api.model.PodList;
import io.fabric8.kubernetes.api.model.PodSpec;
import io.fabric8.kubernetes.api.model.PodStatus;
import io.fabric8.utils.Filter;
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.util.Collections;
import java.util.List;
import java.util.Map;

/**
 * Command to list pods in kubernetes
 */
public class PodsList extends AbstractKubernetesCommand {

    @Inject
    @WithAttributes(name = "filter", label = "The text filter used to filter pods using label selectors")
    UIInput filterText;

    @Override
    public UICommandMetadata getMetadata(UIContext context) {
        return Metadata.from(super.getMetadata(context), getClass())
                .category(Categories.create(CATEGORY))
                .name(CATEGORY + ": Pod List")
                .description("Lists the pods 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 {
        PodList pods = getKubernetes().pods().inNamespace(getNamespace()).list();
        KubernetesHelper.removeEmptyPods(pods);
        TablePrinter table = podsAsTable(pods);
        return tableResults(table);
    }

    protected TablePrinter podsAsTable(PodList pods) {
        TablePrinter table = new TablePrinter();
        table.columns("id", "image(s)", "host", "labels", "status");
        List items = pods.getItems();
        if (items == null) {
            items = Collections.EMPTY_LIST;
        }
        Filter filter = KubernetesHelper.createPodFilter(filterText.getValue());
        for (Pod item : items) {
            if (filter.matches(item)) {
                String id = KubernetesHelper.getName(item);
                PodStatus podStatus = item.getStatus();
                String status = "";
                String host = "";
                if (podStatus != null) {
                    status = KubernetesHelper.getStatusText(podStatus);
                    host = podStatus.getHostIP();
                }
                Map labelMap = item.getMetadata().getLabels();
                String labels = KubernetesHelper.toLabelsString(labelMap);
                PodSpec spec = item.getSpec();
                if (spec != null) {
                    List containerList = spec.getContainers();
                    for (Container container : containerList) {
                        String image = container.getImage();
                        table.row(id, image, host, labels, status);

                        id = "";
                        host = "";
                        status = "";
                        labels = "";
                    }
                }
            }
        }
        return table;
    }

}