/*
* Copyright 2017 the original author or authors.
*
* 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 org.gradle.api.internal.changedetection.state;
import com.google.common.hash.Funnels;
import com.google.common.hash.HashCode;
import com.google.common.hash.Hasher;
import com.google.common.hash.Hashing;
import com.google.common.io.ByteStreams;
import org.gradle.caching.internal.BuildCacheHasher;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
/**
* Hashes contents of resources ({@link RegularFileSnapshot}s and {@link ZipEntry}s) in runtime classpath entries.
*
* Currently, we take the unmodified content into account but we could be smarter at some point.
*/
public class RuntimeClasspathResourceHasher implements ResourceHasher {
@Override
public HashCode hash(RegularFileSnapshot fileSnapshot) {
return fileSnapshot.getContent().getContentMd5();
}
@Override
public HashCode hash(ZipEntry zipEntry, InputStream zipInput) throws IOException {
Hasher hasher = Hashing.md5().newHasher();
ByteStreams.copy(zipInput, Funnels.asOutputStream(hasher));
return hasher.hash();
}
@Override
public void appendConfigurationToHasher(BuildCacheHasher hasher) {
hasher.putString(getClass().getName());
}
}