1 files changed, 51 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionContextProvider.java b/src/main/java/com/google/devtools/build/lib/actions/ActionContextProvider.java
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index 0000000000..6e52a4a404
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+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionContextProvider.java
@@ -0,0 +1,51 @@
+// 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();
+}