com.metamx.druid.indexing.coordinator.TaskRunnerWorkItem.java Source code

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Here is the source code for com.metamx.druid.indexing.coordinator.TaskRunnerWorkItem.java

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/*
 * Druid - a distributed column store.
 * Copyright (C) 2012  Metamarkets Group Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package com.metamx.druid.indexing.coordinator;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.ComparisonChain;
import com.google.common.util.concurrent.ListenableFuture;
import com.metamx.druid.indexing.common.TaskStatus;
import com.metamx.druid.indexing.common.task.Task;
import org.joda.time.DateTime;
import org.joda.time.DateTimeComparator;

/**
 * A holder for a task and different components associated with the task
 */
public class TaskRunnerWorkItem implements Comparable<TaskRunnerWorkItem> {
    private final Task task;
    private final ListenableFuture<TaskStatus> result;
    private final DateTime createdTime;
    private final DateTime queueInsertionTime;

    public TaskRunnerWorkItem(Task task, ListenableFuture<TaskStatus> result) {
        this(task, result, new DateTime(), new DateTime());
    }

    public TaskRunnerWorkItem(Task task, ListenableFuture<TaskStatus> result, DateTime createdTime,
            DateTime queueInsertionTime) {
        this.task = task;
        this.result = result;
        this.createdTime = createdTime;
        this.queueInsertionTime = queueInsertionTime;
    }

    @JsonProperty
    public Task getTask() {
        return task;
    }

    public ListenableFuture<TaskStatus> getResult() {
        return result;
    }

    @JsonProperty
    public DateTime getCreatedTime() {
        return createdTime;
    }

    @JsonProperty
    public DateTime getQueueInsertionTime() {
        return queueInsertionTime;
    }

    public TaskRunnerWorkItem withQueueInsertionTime(DateTime time) {
        return new TaskRunnerWorkItem(task, result, createdTime, time);
    }

    @Override
    public int compareTo(TaskRunnerWorkItem taskRunnerWorkItem) {
        return ComparisonChain.start()
                .compare(createdTime, taskRunnerWorkItem.getCreatedTime(), DateTimeComparator.getInstance())
                .compare(task.getId(), taskRunnerWorkItem.getTask().getId()).result();
    }

    @Override
    public String toString() {
        return "TaskRunnerWorkItem{" + "task=" + task + ", result=" + result + ", createdTime=" + createdTime + '}';
    }
}