/*
* Copyright 2013-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.testutil;
import com.facebook.buck.io.ArchiveMemberPath;
import com.facebook.buck.io.ProjectFilesystem;
import com.facebook.buck.util.cache.FileHashCache;
import com.google.common.hash.HashCode;
import java.io.IOException;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map;
/** FileHashCache that is populated with a fixed set of entries. */
public class FakeFileHashCache implements FileHashCache {
private final Map<Path, HashCode> pathsToHashes;
private final Map<ArchiveMemberPath, HashCode> archiveMemberPathsToHashes;
private final Map<Path, Long> pathsToSizes;
private final boolean usePathsForArchives;
public FakeFileHashCache(Map<Path, HashCode> pathsToHashes) {
this(pathsToHashes, new HashMap<>(), new HashMap<>());
}
public FakeFileHashCache(
Map<Path, HashCode> pathsToHashes,
boolean usePathsForArchives,
Map<Path, Long> pathsToSizes) {
this.pathsToHashes = pathsToHashes;
this.archiveMemberPathsToHashes = new HashMap<>();
this.pathsToSizes = pathsToSizes;
this.usePathsForArchives = usePathsForArchives;
}
public FakeFileHashCache(
Map<Path, HashCode> pathsToHashes,
Map<ArchiveMemberPath, HashCode> archiveMemberPathsToHashes,
Map<Path, Long> pathsToSizes) {
this.pathsToHashes = pathsToHashes;
this.archiveMemberPathsToHashes = archiveMemberPathsToHashes;
this.pathsToSizes = pathsToSizes;
this.usePathsForArchives = false;
}
public static FakeFileHashCache createFromStrings(Map<String, String> pathsToHashes) {
return createFromStrings(new FakeProjectFilesystem(), pathsToHashes);
}
private static FakeFileHashCache createFromStrings(
ProjectFilesystem filesystem, Map<String, String> pathsToHashes) {
Map<Path, HashCode> cachedValues = new HashMap<>();
for (Map.Entry<String, String> entry : pathsToHashes.entrySet()) {
// Retain the original behaviour
cachedValues.put(Paths.get(entry.getKey()), HashCode.fromString(entry.getValue()));
// And ensure that the absolute path is also present.
if (!entry.getKey().startsWith("/")) {
cachedValues.put(filesystem.resolve(entry.getKey()), HashCode.fromString(entry.getValue()));
}
}
return new FakeFileHashCache(cachedValues);
}
@Override
public void invalidate(Path path) {
pathsToHashes.remove(path);
}
@Override
public void invalidateAll() {
pathsToHashes.clear();
}
@Override
public HashCode get(Path path) throws IOException {
HashCode hashCode = pathsToHashes.get(path);
if (hashCode == null) {
throw new NoSuchFileException(path.toString());
}
return hashCode;
}
@Override
public long getSize(Path path) throws IOException {
Long hashCode = pathsToSizes.get(path);
if (hashCode == null) {
throw new NoSuchFileException(path.toString());
}
return hashCode;
}
@Override
public HashCode get(ArchiveMemberPath archiveMemberPath) throws IOException {
if (usePathsForArchives) {
return get(Paths.get(archiveMemberPath.toString()));
}
HashCode hashCode = archiveMemberPathsToHashes.get(archiveMemberPath);
if (hashCode == null) {
throw new NoSuchFileException(archiveMemberPath.toString());
}
return hashCode;
}
@Override
public void set(Path path, HashCode hashCode) {
pathsToHashes.put(path, hashCode);
}
public boolean contains(Path path) {
return pathsToHashes.containsKey(path);
}
}