// Copyright 2014 The Bazel Authors. 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.google.devtools.build.lib.actions;

/**
 * Used as a notification mechanism for the scheduling middleman mutations
 * related to scheduling exclusive tests.
 */
public interface TestMiddlemanObserver {

  /**
   * Called when the test removes the stale middleman.
   *
   * @param action the test action.
   * @param middleman the scheduling middleman.
   * @param middlemanAction the action generating the scheduling middleman
   */
  void remove(Action action, Artifact middleman, Action middlemanAction);
}
