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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;
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.cluster.ClusterService;
import org.onosproject.cluster.ControllerNode;
import org.onosproject.mastership.MastershipService;
import org.onosproject.net.DeviceId;
import java.util.Collections;
import java.util.List;
import static com.google.common.collect.Lists.newArrayList;
/**
* Lists device mastership information.
*/
@Command(scope = "onos", name = "masters",
description = "Lists device mastership information")
public class MastersListCommand extends AbstractShellCommand {
@Override
protected void execute() {
ClusterService service = get(ClusterService.class);
MastershipService mastershipService = get(MastershipService.class);
List<ControllerNode> nodes = newArrayList(service.getNodes());
Collections.sort(nodes, Comparators.NODE_COMPARATOR);
if (outputJson()) {
print("%s", json(service, mastershipService, nodes));
} else {
for (ControllerNode node : nodes) {
List<DeviceId> ids = Lists.newArrayList(mastershipService.getDevicesOf(node.id()));
Collections.sort(ids, Comparators.ELEMENT_ID_COMPARATOR);
print("%s: %d devices", node.id(), ids.size());
for (DeviceId deviceId : ids) {
print(" %s", deviceId);
}
}
}
}
// Produces JSON structure.
private JsonNode json(ClusterService service, MastershipService mastershipService,
List<ControllerNode> nodes) {
ObjectMapper mapper = new ObjectMapper();
ArrayNode result = mapper.createArrayNode();
ControllerNode self = service.getLocalNode();
for (ControllerNode node : nodes) {
List<DeviceId> ids = Lists.newArrayList(mastershipService.getDevicesOf(node.id()));
result.add(mapper.createObjectNode()
.put("id", node.id().toString())
.put("size", ids.size())
.set("devices", json(mapper, ids)));
}
return result;
}
/**
* Produces a JSON array containing the specified device identifiers.
*
* @param mapper object mapper
* @param ids collection of device identifiers
* @return JSON array
*/
public static JsonNode json(ObjectMapper mapper, Iterable<DeviceId> ids) {
ArrayNode result = mapper.createArrayNode();
for (DeviceId deviceId : ids) {
result.add(deviceId.toString());
}
return result;
}
}
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