/*
* Copyright 2016 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.rules;
import com.google.common.collect.ImmutableSortedMap;
import com.google.common.collect.Maps;
import org.gradle.api.Nullable;
import org.gradle.api.internal.TaskExecutionHistory;
import org.gradle.api.internal.TaskInternal;
import org.gradle.api.internal.changedetection.state.FileCollectionSnapshot;
import org.gradle.api.internal.changedetection.state.FileCollectionSnapshotterRegistry;
import org.gradle.api.internal.changedetection.state.OutputFilesSnapshotter;
import org.gradle.api.internal.changedetection.state.TaskExecution;
import org.gradle.api.resources.normalization.internal.ResourceNormalizationStrategy;
import java.util.Map;
public class OutputFilesTaskStateChanges extends AbstractNamedFileSnapshotTaskStateChanges {
private final OutputFilesSnapshotter outputSnapshotter;
public OutputFilesTaskStateChanges(@Nullable TaskExecution previous, TaskExecution current, TaskInternal task, FileCollectionSnapshotterRegistry snapshotterRegistry, OutputFilesSnapshotter outputSnapshotter, ResourceNormalizationStrategy normalizationStrategy) {
super(task.getName(), previous, current, snapshotterRegistry, "Output", task.getOutputs().getFileProperties(), normalizationStrategy);
this.outputSnapshotter = outputSnapshotter;
detectOverlappingOutputs();
}
@Override
public ImmutableSortedMap<String, FileCollectionSnapshot> getPrevious() {
return previous.getOutputFilesSnapshot();
}
@Override
public void saveCurrent() {
final ImmutableSortedMap<String, FileCollectionSnapshot> outputFilesAfter = buildSnapshots(getTaskName(), getSnapshotterRegistry(), getTitle(), getFileProperties());
ImmutableSortedMap<String, FileCollectionSnapshot> results = ImmutableSortedMap.copyOfSorted(Maps.transformEntries(getCurrent(), new Maps.EntryTransformer<String, FileCollectionSnapshot, FileCollectionSnapshot>() {
@Override
public FileCollectionSnapshot transformEntry(String propertyName, FileCollectionSnapshot beforeExecution) {
FileCollectionSnapshot afterExecution = outputFilesAfter.get(propertyName);
FileCollectionSnapshot afterPreviousExecution = getSnapshotAfterPreviousExecution(propertyName);
return outputSnapshotter.createOutputSnapshot(afterPreviousExecution, beforeExecution, afterExecution);
}
}));
current.setOutputFilesSnapshot(results);
}
private FileCollectionSnapshot getSnapshotAfterPreviousExecution(String propertyName) {
if (previous != null) {
Map<String, FileCollectionSnapshot> previousSnapshots = previous.getOutputFilesSnapshot();
if (previousSnapshots != null) {
FileCollectionSnapshot afterPreviousExecution = previousSnapshots.get(propertyName);
if (afterPreviousExecution != null) {
return afterPreviousExecution;
}
}
}
return FileCollectionSnapshot.EMPTY;
}
private void detectOverlappingOutputs() {
for (Map.Entry<String, FileCollectionSnapshot> entry : getCurrent().entrySet()) {
String propertyName = entry.getKey();
FileCollectionSnapshot beforeExecution = entry.getValue();
FileCollectionSnapshot afterPreviousExecution = getSnapshotAfterPreviousExecution(propertyName);
TaskExecutionHistory.OverlappingOutputs overlappingOutputs = outputSnapshotter.detectOverlappingOutputs(propertyName, afterPreviousExecution, beforeExecution);
if (overlappingOutputs !=null) {
current.setDetectedOverlappingOutputs(overlappingOutputs);
return;
}
}
}
}