heron/schedulers/src/java/com/twitter/heron/scheduler/aurora/AuroraController.java

// Copyright 2016 Twitter. All rights reserved.
//
// 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.twitter.heron.scheduler.aurora;

import java.util.Map;
import java.util.Set;

import com.twitter.heron.spi.packing.PackingPlan;

/**
 * Interface that defines how a client interacts with aurora to control the job lifecycle
 */
public interface AuroraController {

  boolean createJob(Map<AuroraField, String> auroraProperties);
  boolean killJob();

  /**
   * Restarts a given container, or the entire job if containerId is null
   * @param containerId ID of container to restart, or entire job if null
   */
  boolean restart(Integer containerId);

  void removeContainers(Set<PackingPlan.ContainerPlan> containersToRemove);
  Set<Integer> addContainers(Integer count);
}