/*
* 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.caching.internal.tasks;
import com.google.common.hash.HashCode;
import org.gradle.api.internal.changedetection.state.FileCollectionSnapshot;
import org.gradle.api.internal.changedetection.state.TaskExecution;
import org.gradle.api.internal.changedetection.state.ValueSnapshot;
import org.gradle.caching.internal.DefaultBuildCacheHasher;
import java.util.Map;
import java.util.SortedMap;
import java.util.SortedSet;
public class TaskCacheKeyCalculator {
public TaskOutputCachingBuildCacheKey calculate(TaskExecution execution) {
DefaultTaskOutputCachingBuildCacheKeyBuilder builder = new DefaultTaskOutputCachingBuildCacheKeyBuilder();
builder.appendTaskImplementation(execution.getTaskImplementation());
builder.appendTaskActionImplementations(execution.getTaskActionImplementations());
SortedMap<String, ValueSnapshot> inputProperties = execution.getInputProperties();
for (Map.Entry<String, ValueSnapshot> entry : inputProperties.entrySet()) {
DefaultBuildCacheHasher newHasher = new DefaultBuildCacheHasher();
entry.getValue().appendToHasher(newHasher);
HashCode hash = newHasher.hash();
builder.appendInputPropertyHash(entry.getKey(), hash);
}
SortedMap<String, FileCollectionSnapshot> inputFilesSnapshots = execution.getInputFilesSnapshot();
for (Map.Entry<String, FileCollectionSnapshot> entry : inputFilesSnapshots.entrySet()) {
FileCollectionSnapshot snapshot = entry.getValue();
DefaultBuildCacheHasher newHasher = new DefaultBuildCacheHasher();
snapshot.appendToHasher(newHasher);
HashCode hash = newHasher.hash();
builder.appendInputPropertyHash(entry.getKey(), hash);
}
SortedSet<String> outputPropertyNamesForCacheKey = execution.getOutputPropertyNamesForCacheKey();
for (String cacheableOutputPropertyName : outputPropertyNamesForCacheKey) {
builder.appendOutputPropertyName(cacheableOutputPropertyName);
}
return builder.build();
}
}