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

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// Licensed under the Apache License, Version 2.0 (the "License");
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//    http://www.apache.org/licenses/LICENSE-2.0
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package com.google.devtools.build.lib.actions;

import javax.annotation.Nullable;

/**
 * An action that emits rich data.
 *
 * <p>This needs to be a concept because when such an action is an action cache hit, the rich data
 * is currently not reconstructed from the action cache (it's theoretically possible, it's just that
 * it's not done). So the action must reconstruct this data itself.
 */
// TODO(lberki): Maybe merge this with NotifyOnActionCacheHit?
public interface RichDataProducingAction {
  @Nullable
  RichArtifactData reconstructRichDataOnActionCacheHit(InputMetadataProvider inputMetadataProvider)
      throws ActionExecutionException;
}