io.druid.indexing.worker.TaskAnnouncement.java Source code

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Here is the source code for io.druid.indexing.worker.TaskAnnouncement.java

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/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * 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 io.druid.indexing.worker;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Preconditions;
import io.druid.indexing.common.TaskStatus;
import io.druid.indexing.common.task.Task;
import io.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) {
        return create(task.getId(), task.getTaskResource(), status);
    }

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

    @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;
    }
}