com.netflix.fenzo.TaskTrackerState Maven / Gradle / Ivy
/*
* Copyright 2015 Netflix, 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 com.netflix.fenzo;
import java.util.Map;
/**
* The state of the tasks that are tracked by the task scheduler. The task scheduler passes an object that
* implements this interface into {@link ConstraintEvaluator}s to enable them to have a bird's-eye view of the
* state of tasks that are assigned and running in the system at large.
*/
public interface TaskTrackerState {
/**
* Get a map of all running tasks. The map keys are the task IDs of active tasks. The map values are the
* corresponding active task objects containing information on the active task.
*
* @return a Map of all known running tasks
*/
public Map getAllRunningTasks();
/**
* Get a map of all tasks currently assigned during a scheduling trial, but not running yet. The map keys
* are the task IDs of the assigned tasks. The map values are the corresponding active task objects
* containing information on the assigned tasks.
*
* @return a Map of all assigned tasks
*/
public Map getAllCurrentlyAssignedTasks();
}