Java tutorial
/*- * -\-\- * Helios Tools * -- * Copyright (C) 2016 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 static com.google.common.base.Preconditions.checkNotNull; import static com.google.common.collect.Iterables.getLast; import static com.spotify.helios.cli.Output.table; import com.spotify.helios.cli.Table; import com.spotify.helios.client.HeliosClient; import com.spotify.helios.common.Json; import com.spotify.helios.common.descriptors.Job; import com.spotify.helios.common.descriptors.JobId; import com.spotify.helios.common.descriptors.TaskStatus; import com.spotify.helios.common.descriptors.TaskStatus.State; import com.spotify.helios.common.descriptors.TaskStatusEvent; import com.spotify.helios.common.protocol.TaskStatusEvents; import java.io.BufferedReader; import java.io.PrintStream; import java.util.List; import java.util.Map; import java.util.concurrent.ExecutionException; import net.sourceforge.argparse4j.inf.Argument; import net.sourceforge.argparse4j.inf.Namespace; import net.sourceforge.argparse4j.inf.Subparser; import org.joda.time.format.DateTimeFormat; import org.joda.time.format.DateTimeFormatter; public class JobHistoryCommand extends ControlCommand { private final Argument jobIdArg; public JobHistoryCommand(Subparser parser) { super(parser); parser.help("see the run history of a job"); jobIdArg = parser.addArgument("jobid").help("Job id"); } @Override int run(final Namespace options, final HeliosClient client, final PrintStream out, final boolean json, final BufferedReader stdin) throws ExecutionException, InterruptedException { final String jobIdString = options.getString(jobIdArg.getDest()); final Map<JobId, Job> jobs = client.jobs(jobIdString).get(); if (jobs.size() == 0) { out.printf("Unknown job: %s%n", jobIdString); return 1; } else if (jobs.size() > 1) { out.printf("Ambiguous job id: %s%n", jobIdString); return 1; } final JobId jobId = getLast(jobs.keySet()); final TaskStatusEvents result = client.jobHistory(jobId).get(); if (json) { out.println(Json.asPrettyStringUnchecked(result)); return 0; } final Table table = table(out); table.row("HOST", "TIMESTAMP", "STATE", "THROTTLED", "CONTAINERID"); final List<TaskStatusEvent> events = result.getEvents(); final DateTimeFormatter format = DateTimeFormat.forPattern("YYYY-MM-dd HH:mm:ss.SSS"); for (final TaskStatusEvent event : events) { final String host = checkNotNull(event.getHost()); final long timestamp = checkNotNull(event.getTimestamp()); final TaskStatus status = checkNotNull(event.getStatus()); final State state = checkNotNull(status.getState()); String containerId = status.getContainerId(); containerId = containerId == null ? "<none>" : containerId; table.row(host, format.print(timestamp), state, status.getThrottled(), containerId); } table.print(); return 0; } }