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/*
 * Copyright 2013 Microsoft.
 *
 * 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.microsoft.reef.io.network.group.config;

import java.util.List;

import com.microsoft.wake.ComparableIdentifier;

public interface TaskTree {

  public static enum Status {
    UNSCHEDULED, SCHEDULED, COMPLETED, ANY;
    // ANY is to be used for search only. Its not an actual state
  }

  void add(ComparableIdentifier id);

  ComparableIdentifier parent(ComparableIdentifier id);

  ComparableIdentifier left(ComparableIdentifier id);

  ComparableIdentifier right(ComparableIdentifier id);

  List neighbors(ComparableIdentifier id);

  List children(ComparableIdentifier id);

  int childrenSupported(ComparableIdentifier taskId);

  void remove(ComparableIdentifier failedTaskId);

  List scheduledChildren(ComparableIdentifier taskId);

  List scheduledNeighbors(ComparableIdentifier taskId);

  void setStatus(ComparableIdentifier taskId, Status status);

  Status getStatus(ComparableIdentifier taskId);
}