| /* |
| * Copyright 2014-present Open Networking Foundation |
| * |
| * 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.text.DateFormat; |
| import java.text.SimpleDateFormat; |
| import java.util.Calendar; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.karaf.shell.commands.Command; |
| import org.apache.karaf.shell.commands.Option; |
| import org.onosproject.cli.AbstractShellCommand; |
| import org.onosproject.net.topology.Topology; |
| import org.onosproject.net.topology.TopologyProvider; |
| import org.onosproject.net.topology.TopologyService; |
| |
| /** |
| * Lists summary of the current topology. |
| */ |
| @Command(scope = "onos", name = "topology", |
| description = "Lists summary of the current topology") |
| public class TopologyCommand extends AbstractShellCommand { |
| |
| private static final String FMT = "created=%s, uptime=%s, devices=%d, links=%d, clusters=%d"; |
| |
| @Option(name = "-r", aliases = "--recompute", |
| description = "Trigger topology re-computation", required = false, |
| multiValued = false) |
| private boolean recompute = false; |
| |
| protected TopologyService service; |
| protected Topology topology; |
| |
| /** |
| * Initializes the context for all cluster commands. |
| */ |
| protected void init() { |
| service = get(TopologyService.class); |
| topology = service.currentTopology(); |
| } |
| |
| @Override |
| protected void execute() { |
| init(); |
| long topologyUptime = |
| Math.max(0, (System.currentTimeMillis() - topology.creationTime())); |
| if (recompute) { |
| get(TopologyProvider.class).triggerRecompute(); |
| |
| } else if (outputJson()) { |
| print("%s", |
| jsonForEntity(topology, Topology.class)); |
| } else { |
| print(FMT, formatCreationTime(topology.creationTime()), |
| formatElapsedTime(topologyUptime), |
| topology.deviceCount(), topology.linkCount(), |
| topology.clusterCount()); |
| } |
| } |
| |
| /** |
| * Converts millis to a formatted elapsed time string. |
| * |
| * @param millis Duration in millis to convert to a string |
| * |
| * @return Formatted string: "D days, H hrs, M mins, S secs". |
| */ |
| private static String formatElapsedTime(long millis) { |
| if (millis < 0) { |
| throw new IllegalArgumentException("Interval less than zero. " |
| + "Possible unsynchronized timestamps"); |
| } |
| |
| final long days = TimeUnit.MILLISECONDS.toDays(millis); |
| millis -= TimeUnit.DAYS.toMillis(days); |
| final long hours = TimeUnit.MILLISECONDS.toHours(millis); |
| millis -= TimeUnit.HOURS.toMillis(hours); |
| final long minutes = TimeUnit.MILLISECONDS.toMinutes(millis); |
| millis -= TimeUnit.MINUTES.toMillis(minutes); |
| final long seconds = TimeUnit.MILLISECONDS.toSeconds(millis); |
| |
| final StringBuilder topologyUptimeString = new StringBuilder(64); |
| topologyUptimeString.append(days); |
| topologyUptimeString.append(" days, "); |
| topologyUptimeString.append(hours); |
| topologyUptimeString.append(" hrs, "); |
| topologyUptimeString.append(minutes); |
| topologyUptimeString.append(" mins, "); |
| topologyUptimeString.append(seconds); |
| topologyUptimeString.append(" secs"); |
| |
| return (topologyUptimeString.toString()); |
| } |
| |
| /** |
| * Converts millis to a formatted Date String. |
| * |
| * @param millis Duration in millis to convert to a string |
| * |
| * @return Formatted string: yyyy-MM-dd HH:mm:ss. |
| */ |
| private static String formatCreationTime(long millis) { |
| final DateFormat dateFormatter = |
| new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); |
| Calendar calendar = Calendar.getInstance(); |
| calendar.setTimeInMillis(millis); |
| return (dateFormatter.format(calendar.getTime())); |
| } |
| } |