com.metamx.druid.indexing.worker.TaskAnnouncement.java Source code

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Here is the source code for com.metamx.druid.indexing.worker.TaskAnnouncement.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.worker;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Preconditions;
import com.metamx.druid.indexing.common.TaskStatus;
import com.metamx.druid.indexing.common.task.Task;
import com.metamx.druid.indexing.common.task.TaskResource;

/**
 * Used by workers to announce the status of tasks they are currently running. This class is immutable.
 */
public class TaskAnnouncement {
    private final TaskStatus taskStatus;
    private final TaskResource taskResource;

    public static TaskAnnouncement create(Task task, TaskStatus status) {
        Preconditions.checkArgument(status.getId().equals(task.getId()), "task id == status id");
        return new TaskAnnouncement(null, null, status, task.getTaskResource());
    }

    @JsonCreator
    private TaskAnnouncement(@JsonProperty("id") String taskId, @JsonProperty("status") TaskStatus.Status status,
            @JsonProperty("taskStatus") TaskStatus taskStatus,
            @JsonProperty("taskResource") TaskResource taskResource) {
        if (taskStatus != null) {
            this.taskStatus = taskStatus;
        } else {
            // Can be removed when backwards compat is no longer needed
            this.taskStatus = TaskStatus.fromCode(taskId, status);
        }
        this.taskResource = taskResource == null ? new TaskResource(this.taskStatus.getId(), 1) : taskResource;
    }

    // Can be removed when backwards compat is no longer needed
    @JsonProperty("id")
    @Deprecated
    public String getTaskId() {
        return taskStatus.getId();
    }

    // Can be removed when backwards compat is no longer needed
    @JsonProperty("status")
    @Deprecated
    public TaskStatus.Status getStatus() {
        return taskStatus.getStatusCode();
    }

    @JsonProperty("taskStatus")
    public TaskStatus getTaskStatus() {
        return taskStatus;
    }

    @JsonProperty("taskResource")
    public TaskResource getTaskResource() {
        return taskResource;
    }
}