src/main/java/com/google/devtools/build/lib/actions/ActionContextProvider.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

// Copyright 2014 Google Inc. 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;

import com.google.devtools.build.lib.actions.Executor.ActionContext;

/**
 * An object that provides execution strategies to {@link BlazeExecutor}.
 *
 * <p>For more information, see {@link ActionContextConsumer}.
 */
public interface ActionContextProvider {
  /**
   * Returns the execution strategies that are provided by this object.
   *
   * <p>These may or may not actually end up in the executor depending on the command line options
   * and other factors influencing how the executor is set up.
   */
  Iterable<ActionContext> getActionContexts();

  /**
   * Called when the executor is constructed. The parameter contains all the contexts that were
   * selected for this execution phase.
   */
  void executorCreated(Iterable<ActionContext> usedContexts) throws ExecutorInitException;

  /**
   * Called when the execution phase is started.
   */
  void executionPhaseStarting(
      ActionInputFileCache actionInputFileCache,
      ActionGraph actionGraph,
      Iterable<Artifact> topLevelArtifacts)
          throws ExecutorInitException, InterruptedException;

  /**
   * Called when the execution phase is finished.
   */
  void executionPhaseEnding();
}