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/*
* Copyright 2014 Open Networking Laboratory
*
* Licensed 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 org.onosproject.cli.net;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.google.common.collect.Lists;
import org.apache.karaf.shell.commands.Command;
import org.onosproject.cli.Comparators;
import org.onosproject.net.topology.TopologyCluster;
import java.util.Collections;
import java.util.List;
/**
* Lists all clusters in the current topology.
*/
@Command(scope = "onos", name = "clusters",
description = "Lists all clusters in the current topology")
public class ClustersListCommand extends TopologyCommand {
private static final String FMT =
"id=%d, devices=%d, links=%d";
@Override
protected void execute() {
init();
List<TopologyCluster> clusters = Lists.newArrayList(service.getClusters(topology));
Collections.sort(clusters, Comparators.CLUSTER_COMPARATOR);
if (outputJson()) {
print("%s", json(clusters));
} else {
for (TopologyCluster cluster : clusters) {
print(FMT, cluster.id().index(), cluster.deviceCount(), cluster.linkCount());
}
}
}
// Produces a JSON result.
private JsonNode json(Iterable<TopologyCluster> clusters) {
ObjectMapper mapper = new ObjectMapper();
ArrayNode result = mapper.createArrayNode();
clusters.spliterator()
.forEachRemaining(cluster ->
result.add(jsonForEntity(cluster, TopologyCluster.class)));
return result;
}
}
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