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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 java.util.Collections;
import java.util.List;
import org.apache.karaf.shell.commands.Command;
import org.onosproject.cli.AbstractShellCommand;
import org.onosproject.cli.Comparators;
import org.onosproject.net.Host;
import org.onosproject.net.host.HostService;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import static com.google.common.collect.Lists.newArrayList;
/**
* Lists all currently-known hosts.
*/
@Command(scope = "onos", name = "hosts",
description = "Lists all currently-known hosts.")
public class HostsListCommand extends AbstractShellCommand {
private static final String FMT =
"id=%s, mac=%s, location=%s/%s, vlan=%s, ip(s)=%s%s";
@Override
protected void execute() {
HostService service = get(HostService.class);
if (outputJson()) {
print("%s", json(getSortedHosts(service)));
} else {
for (Host host : getSortedHosts(service)) {
printHost(host);
}
}
}
// Produces JSON structure.
private JsonNode json(Iterable<Host> hosts) {
ObjectMapper mapper = new ObjectMapper();
ArrayNode result = mapper.createArrayNode();
hosts.forEach(host -> result.add(jsonForEntity(host, Host.class)));
return result;
}
/**
* Returns the list of devices sorted using the device ID URIs.
*
* @param service device service
* @return sorted device list
*/
protected List<Host> getSortedHosts(HostService service) {
List<Host> hosts = newArrayList(service.getHosts());
Collections.sort(hosts, Comparators.ELEMENT_COMPARATOR);
return hosts;
}
/**
* Prints information about a host.
*
* @param host end-station host
*/
protected void printHost(Host host) {
if (host != null) {
print(FMT, host.id(), host.mac(),
host.location().deviceId(),
host.location().port(),
host.vlan(), host.ipAddresses(),
annotations(host.annotations()));
}
}
}
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