// Copyright 2018 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.skyframe;

import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.Artifact.TreeFileArtifact;
import com.google.devtools.build.lib.actions.ArtifactFileMetadata;
import com.google.devtools.build.lib.actions.FileArtifactValue;

/**
 * Implementation of {@link OutputStore} that retains a minimal amount of output data necessary to
 * complete the build.
 *
 * <p>This store is intended for use with in-memory file systems, where aggressive caching would not
 * be worthwhile.
 */
// TODO(b/115361150): See if even less data can be retained. Specifically, we shouldn't need to
// call injectRemoteFile for anything, including children of tree artifacts.
final class MinimalOutputStore extends OutputStore {

  @Override
  void putAdditionalOutputData(Artifact artifact, FileArtifactValue value) {
    if (value.isMarkerValue()) {
      super.putAdditionalOutputData(artifact, value);
    }
  }

  @Override
  void putArtifactData(Artifact artifact, ArtifactFileMetadata value) {}

  @Override
  void addTreeArtifactContents(Artifact artifact, TreeFileArtifact contents) {}

  @Override
  void injectRemoteFile(Artifact output, byte[] digest, long size, int locationIndex) {
    if (isChildOfTreeArtifact(output)) {
      super.injectRemoteFile(output, digest, size, locationIndex);
    }
  }

  private static boolean isChildOfTreeArtifact(Artifact artifact) {
    return artifact.hasParent() && artifact.getParent().isTreeArtifact();
  }
}

// Copyright 2018 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.skyframe;

import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.Artifact.TreeFileArtifact;
import com.google.devtools.build.lib.actions.ArtifactFileMetadata;
import com.google.devtools.build.lib.actions.FileArtifactValue;

/**
 * Implementation of {@link OutputStore} that retains a minimal amount of output data necessary to
 * complete the build.
 *
 * <p>This store is intended for use with in-memory file systems, where aggressive caching would not
 * be worthwhile.
 */
final class MinimalOutputStore extends OutputStore {

  @Override
  void putAdditionalOutputData(Artifact artifact, FileArtifactValue value) {
    if (value.isMarkerValue()) {
      super.putAdditionalOutputData(artifact, value);
    }
  }

  @Override
  void putArtifactData(Artifact artifact, ArtifactFileMetadata value) {}

  @Override
  void addTreeArtifactContents(Artifact artifact, TreeFileArtifact contents) {}

  @Override
  void injectRemoteFile(Artifact output, byte[] digest, long size, int locationIndex) {}
}

Remove special handling of children of tree artifacts from MinimalOutputStore.