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// 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;
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 abstract class 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.
*/
public abstract Iterable<ActionContext> getActionContexts();
/**
* Called when the executor is constructed. The parameter contains all the contexts that were
* selected for this execution phase.
*/
public void executorCreated(Iterable<ActionContext> usedContexts) throws ExecutorInitException {}
/**
* Called when the execution phase is started.
*/
public void executionPhaseStarting(
ActionInputFileCache actionInputFileCache,
ActionGraph actionGraph,
Iterable<Artifact> topLevelArtifacts)
throws ExecutorInitException, InterruptedException {}
/**
* Called when the execution phase is finished.
*/
public void executionPhaseEnding() {}
}
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