/*
 * Copyright 2016-present Facebook, Inc.
 *
 * 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.facebook.buck.rules;

import com.facebook.buck.io.ProjectFilesystem;
import com.facebook.buck.util.cache.DefaultFileHashCache;
import com.facebook.buck.util.cache.FileHashCache;
import com.facebook.buck.util.cache.StackedFileHashCache;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;

import javax.annotation.Nonnull;

/**
 */
public class LocalCachingBuildEngineDelegate implements CachingBuildEngineDelegate {
  private final FileHashCache defaultFileHashCache;

  public LocalCachingBuildEngineDelegate(FileHashCache defaultFileHashCache) {
    this.defaultFileHashCache = defaultFileHashCache;
  }

  @Override
  public LoadingCache<ProjectFilesystem, FileHashCache> createFileHashCacheLoader() {
    return CacheBuilder.newBuilder()
        .build(new CacheLoader<ProjectFilesystem, FileHashCache>() {
          @Override
          public FileHashCache load(@Nonnull ProjectFilesystem filesystem) {
            FileHashCache cellCache = DefaultFileHashCache.createDefaultFileHashCache(filesystem);
            FileHashCache buckOutCache = DefaultFileHashCache.createBuckOutFileHashCache(
                filesystem.replaceBlacklistedPaths(ImmutableSet.of()),
                filesystem.getBuckPaths().getBuckOut());
            return new StackedFileHashCache(
                ImmutableList.of(defaultFileHashCache, cellCache, buckOutCache));
          }
        });
  }

  @Override
  public void onRuleAboutToBeBuilt(BuildRule buildRule) {
    // no-op.
  }
}

@@ -721,124 +721,8 @@
 che.
-DefaultFileHashCache;%0Aimport com.facebook.buck.util.cache.FileHashCache;%0Aimport com.facebook.buck.util.cache.Stacked
 File
@@ -728,24 +728,24 @@
 eHashCache;%0A
+
 import com.g
@@ -869,103 +869,8 @@
 che;
-%0Aimport com.google.common.collect.ImmutableList;%0Aimport com.google.common.collect.ImmutableSet;
 %0A%0Aim
@@ -1502,438 +1502,35 @@
     
-FileHashCache cellCache = DefaultFileHashCache.createDefaultFileHashCache(filesystem);%0A            FileHashCache buckOutCache = DefaultFileHashCache.createBuckOutFileHashCache(%0A                filesystem.replaceBlacklistedPaths(ImmutableSet.of()),%0A                filesystem.getBuckPaths().getBuckOut());%0A            return new StackedFileHashCache(%0A                ImmutableList.of(defaultFileHashCache, cellCache, buckOutCache))
+return defaultFileHashCache
 ;%0A  

Simplify LocalCachingBuildEngineDelegate