com.spotify.helios.cli.command.MasterListCommand Maven / Gradle / Ivy
/*
* Copyright (c) 2014 Spotify AB.
*
* 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 com.spotify.helios.cli.command;
import com.google.common.collect.Sets;
import com.spotify.helios.client.HeliosClient;
import com.spotify.helios.common.Json;
import net.sourceforge.argparse4j.inf.Argument;
import net.sourceforge.argparse4j.inf.Namespace;
import net.sourceforge.argparse4j.inf.Subparser;
import java.io.BufferedReader;
import java.io.PrintStream;
import java.util.List;
import java.util.SortedSet;
import java.util.concurrent.ExecutionException;
import static com.spotify.helios.cli.Output.formatHostname;
import static net.sourceforge.argparse4j.impl.Arguments.storeTrue;
public class MasterListCommand extends ControlCommand {
private final Argument fullArg;
public MasterListCommand(Subparser parser) {
super(parser);
parser.help("list masters");
fullArg = parser.addArgument("-f")
.action(storeTrue())
.help("Print full hostnames");
}
@Override
int run(final Namespace options, final HeliosClient client, final PrintStream out,
final boolean json, final BufferedReader stdin)
throws ExecutionException, InterruptedException {
final List masters = client.listMasters().get();
final boolean full = options.getBoolean(fullArg.getDest());
final SortedSet sortedMasters = Sets.newTreeSet();
if (json) {
for (final String host : masters) {
sortedMasters.add(formatHostname(full, host));
}
out.println(Json.asPrettyStringUnchecked(sortedMasters));
} else {
for (final String host : masters) {
out.println(formatHostname(full, host));
}
}
return 0;
}
}