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/*
* Copyright 2010 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.tasks.execution;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSortedMap;
import com.google.common.collect.ImmutableSortedSet;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import org.gradle.api.execution.TaskActionListener;
import org.gradle.api.execution.TaskExecutionListener;
import org.gradle.api.file.FileCollection;
import org.gradle.api.internal.GeneratedSubclasses;
import org.gradle.api.internal.TaskInternal;
import org.gradle.api.internal.TaskOutputsInternal;
import org.gradle.api.internal.file.FileCollectionFactory;
import org.gradle.api.internal.file.FileOperations;
import org.gradle.api.internal.file.collections.LazilyInitializedFileCollection;
import org.gradle.api.internal.project.ProjectInternal;
import org.gradle.api.internal.project.taskfactory.IncrementalInputsTaskAction;
import org.gradle.api.internal.project.taskfactory.IncrementalTaskInputsTaskAction;
import org.gradle.api.internal.tasks.DefaultTaskValidationContext;
import org.gradle.api.internal.tasks.InputChangesAwareTaskAction;
import org.gradle.api.internal.tasks.SnapshotTaskInputsBuildOperationResult;
import org.gradle.api.internal.tasks.SnapshotTaskInputsBuildOperationType;
import org.gradle.api.internal.tasks.TaskExecuter;
import org.gradle.api.internal.tasks.TaskExecuterResult;
import org.gradle.api.internal.tasks.TaskExecutionContext;
import org.gradle.api.internal.tasks.TaskExecutionOutcome;
import org.gradle.api.internal.tasks.TaskStateInternal;
import org.gradle.api.internal.tasks.properties.CacheableOutputFilePropertySpec;
import org.gradle.api.internal.tasks.properties.InputFilePropertySpec;
import org.gradle.api.internal.tasks.properties.OutputFilePropertySpec;
import org.gradle.api.internal.tasks.properties.TaskProperties;
import org.gradle.api.tasks.CacheableTask;
import org.gradle.api.tasks.StopActionException;
import org.gradle.api.tasks.StopExecutionException;
import org.gradle.api.tasks.TaskExecutionException;
import org.gradle.caching.internal.origin.OriginMetadata;
import org.gradle.internal.UncheckedException;
import org.gradle.internal.event.ListenerManager;
import org.gradle.internal.exceptions.Contextual;
import org.gradle.internal.exceptions.DefaultMultiCauseException;
import org.gradle.internal.exceptions.MultiCauseException;
import org.gradle.internal.execution.CachingResult;
import org.gradle.internal.execution.ExecutionOutcome;
import org.gradle.internal.execution.ExecutionRequestContext;
import org.gradle.internal.execution.InputChangesContext;
import org.gradle.internal.execution.UnitOfWork;
import org.gradle.internal.execution.WorkExecutor;
import org.gradle.internal.execution.WorkValidationException;
import org.gradle.internal.execution.caching.CachingDisabledReason;
import org.gradle.internal.execution.caching.CachingState;
import org.gradle.internal.execution.history.AfterPreviousExecutionState;
import org.gradle.internal.execution.history.ExecutionHistoryStore;
import org.gradle.internal.execution.history.changes.InputChangesInternal;
import org.gradle.internal.execution.impl.OutputFilterUtil;
import org.gradle.internal.file.ReservedFileSystemLocationRegistry;
import org.gradle.internal.fingerprint.CurrentFileCollectionFingerprint;
import org.gradle.internal.fingerprint.FileCollectionFingerprint;
import org.gradle.internal.fingerprint.FileCollectionFingerprinter;
import org.gradle.internal.fingerprint.FileCollectionFingerprinterRegistry;
import org.gradle.internal.fingerprint.impl.AbsolutePathFingerprintingStrategy;
import org.gradle.internal.fingerprint.impl.DefaultCurrentFileCollectionFingerprint;
import org.gradle.internal.fingerprint.overlap.OverlappingOutputs;
import org.gradle.internal.hash.ClassLoaderHierarchyHasher;
import org.gradle.internal.operations.BuildOperationContext;
import org.gradle.internal.operations.BuildOperationDescriptor;
import org.gradle.internal.operations.BuildOperationExecutor;
import org.gradle.internal.operations.BuildOperationRef;
import org.gradle.internal.operations.ExecutingBuildOperation;
import org.gradle.internal.operations.RunnableBuildOperation;
import org.gradle.internal.snapshot.FileSystemSnapshot;
import org.gradle.internal.work.AsyncWorkTracker;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.Nullable;
import java.io.File;
import java.time.Duration;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import static org.gradle.internal.work.AsyncWorkTracker.ProjectLockRetention.RELEASE_AND_REACQUIRE_PROJECT_LOCKS;
import static org.gradle.internal.work.AsyncWorkTracker.ProjectLockRetention.RELEASE_PROJECT_LOCKS;
/**
* A {@link TaskExecuter} which executes the actions of a task.
*/
public class ExecuteActionsTaskExecuter implements TaskExecuter {
private static final Logger LOGGER = LoggerFactory.getLogger(ExecuteActionsTaskExecuter.class);
public enum BuildCacheState {
ENABLED, DISABLED
}
public enum ScanPluginState {
APPLIED, NOT_APPLIED
}
public enum VfsInvalidationStrategy {
COMPLETE, PARTIAL
}
private final BuildCacheState buildCacheState;
private final ScanPluginState scanPluginState;
private final VfsInvalidationStrategy vfsInvalidationStrategy;
private final TaskSnapshotter taskSnapshotter;
private final ExecutionHistoryStore executionHistoryStore;
private final BuildOperationExecutor buildOperationExecutor;
private final AsyncWorkTracker asyncWorkTracker;
private final TaskActionListener actionListener;
private final TaskCacheabilityResolver taskCacheabilityResolver;
private final FileCollectionFingerprinterRegistry fingerprinterRegistry;
private final ClassLoaderHierarchyHasher classLoaderHierarchyHasher;
private final WorkExecutor workExecutor;
private final ListenerManager listenerManager;
private final ReservedFileSystemLocationRegistry reservedFileSystemLocationRegistry;
private final EmptySourceTaskSkipper emptySourceTaskSkipper;
private final FileCollectionFactory fileCollectionFactory;
public ExecuteActionsTaskExecuter(
BuildCacheState buildCacheState,
ScanPluginState scanPluginState,
VfsInvalidationStrategy vfsInvalidationStrategy,
TaskSnapshotter taskSnapshotter,
ExecutionHistoryStore executionHistoryStore,
BuildOperationExecutor buildOperationExecutor,
AsyncWorkTracker asyncWorkTracker,
TaskActionListener actionListener,
TaskCacheabilityResolver taskCacheabilityResolver,
FileCollectionFingerprinterRegistry fingerprinterRegistry,
ClassLoaderHierarchyHasher classLoaderHierarchyHasher,
WorkExecutor workExecutor,
ListenerManager listenerManager,
ReservedFileSystemLocationRegistry reservedFileSystemLocationRegistry,
EmptySourceTaskSkipper emptySourceTaskSkipper,
FileCollectionFactory fileCollectionFactory
) {
this.buildCacheState = buildCacheState;
this.scanPluginState = scanPluginState;
this.vfsInvalidationStrategy = vfsInvalidationStrategy;
this.taskSnapshotter = taskSnapshotter;
this.executionHistoryStore = executionHistoryStore;
this.buildOperationExecutor = buildOperationExecutor;
this.asyncWorkTracker = asyncWorkTracker;
this.actionListener = actionListener;
this.taskCacheabilityResolver = taskCacheabilityResolver;
this.fingerprinterRegistry = fingerprinterRegistry;
this.classLoaderHierarchyHasher = classLoaderHierarchyHasher;
this.workExecutor = workExecutor;
this.listenerManager = listenerManager;
this.reservedFileSystemLocationRegistry = reservedFileSystemLocationRegistry;
this.emptySourceTaskSkipper = emptySourceTaskSkipper;
this.fileCollectionFactory = fileCollectionFactory;
}
@Override
public TaskExecuterResult execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
TaskExecution work = new TaskExecution(task, context, executionHistoryStore, fingerprinterRegistry, classLoaderHierarchyHasher);
try {
return executeIfValid(task, state, context, work);
} catch (WorkValidationException ex) {
state.setOutcome(ex);
return TaskExecuterResult.WITHOUT_OUTPUTS;
}
}
private TaskExecuterResult executeIfValid(TaskInternal task, TaskStateInternal state, TaskExecutionContext context, TaskExecution work) {
CachingResult result = workExecutor.execute(new ExecutionRequestContext() {
@Override
public UnitOfWork getWork() {
return work;
}
@Override
public Optional getRebuildReason() {
return context.getTaskExecutionMode().getRebuildReason();
}
});
result.getOutcome().ifSuccessfulOrElse(
outcome -> state.setOutcome(TaskExecutionOutcome.valueOf(outcome)),
failure -> state.setOutcome(new TaskExecutionException(task, failure))
);
return new TaskExecuterResult() {
@Override
public Optional getReusedOutputOriginMetadata() {
return result.getReusedOutputOriginMetadata();
}
@Override
public boolean executedIncrementally() {
return result.getOutcome()
.map(executionOutcome -> executionOutcome == ExecutionOutcome.EXECUTED_INCREMENTALLY)
.getOrMapFailure(throwable -> false);
}
@Override
public List getExecutionReasons() {
return result.getExecutionReasons();
}
@Override
public CachingState getCachingState() {
return result.getCachingState();
}
};
}
private class TaskExecution implements UnitOfWork {
private final TaskInternal task;
private final TaskExecutionContext context;
private final ExecutionHistoryStore executionHistoryStore;
private final FileCollectionFingerprinterRegistry fingerprinterRegistry;
private final ClassLoaderHierarchyHasher classLoaderHierarchyHasher;
public TaskExecution(
TaskInternal task,
TaskExecutionContext context,
ExecutionHistoryStore executionHistoryStore,
FileCollectionFingerprinterRegistry fingerprinterRegistry,
ClassLoaderHierarchyHasher classLoaderHierarchyHasher) {
this.task = task;
this.context = context;
this.executionHistoryStore = executionHistoryStore;
this.fingerprinterRegistry = fingerprinterRegistry;
this.classLoaderHierarchyHasher = classLoaderHierarchyHasher;
}
@Override
public String getIdentity() {
return task.getPath();
}
@Override
public WorkResult execute(@Nullable InputChangesInternal inputChanges, InputChangesContext context) {
FileCollection previousFiles = context.getAfterPreviousExecutionState()
.map(afterPreviousExecutionState -> (FileCollection) new PreviousOutputFileCollection(task, afterPreviousExecutionState))
.orElseGet(fileCollectionFactory::empty);
TaskOutputsInternal outputs = task.getOutputs();
outputs.setPreviousOutputFiles(previousFiles);
try {
return executeWithPreviousOutputFiles(inputChanges);
} finally {
outputs.setPreviousOutputFiles(null);
}
}
private WorkResult executeWithPreviousOutputFiles(@Nullable InputChangesInternal inputChanges) {
task.getState().setExecuting(true);
try {
LOGGER.debug("Executing actions for {}.", task);
actionListener.beforeActions(task);
executeActions(task, inputChanges);
return task.getState().getDidWork() ? WorkResult.DID_WORK : WorkResult.DID_NO_WORK;
} finally {
task.getState().setExecuting(false);
actionListener.afterActions(task);
}
}
@Override
public Optional getExecutionHistoryStore() {
return context.getTaskExecutionMode().isTaskHistoryMaintained()
? Optional.of(executionHistoryStore)
: Optional.empty();
}
@Override
public void visitImplementations(ImplementationVisitor visitor) {
visitor.visitImplementation(task.getClass());
List taskActions = task.getTaskActions();
for (InputChangesAwareTaskAction taskAction : taskActions) {
visitor.visitAdditionalImplementation(taskAction.getActionImplementation(classLoaderHierarchyHasher));
}
}
@Override
public void visitInputProperties(InputPropertyVisitor visitor) {
Map inputPropertyValues = context.getTaskProperties().getInputPropertyValues().get();
for (Map.Entry entry : inputPropertyValues.entrySet()) {
String propertyName = entry.getKey();
Object value = entry.getValue();
visitor.visitInputProperty(propertyName, value);
}
}
@Override
public void visitInputFileProperties(InputFilePropertyVisitor visitor) {
ImmutableSortedSet inputFileProperties = context.getTaskProperties().getInputFileProperties();
for (InputFilePropertySpec inputFileProperty : inputFileProperties) {
Object value = inputFileProperty.getValue();
boolean incremental = inputFileProperty.isIncremental()
// SkipWhenEmpty implies incremental.
// If this file property is empty, then we clean up the previously generated outputs.
// That means that there is a very close relation between the file property and the output.
|| inputFileProperty.isSkipWhenEmpty();
String propertyName = inputFileProperty.getPropertyName();
visitor.visitInputFileProperty(propertyName, value, incremental, () -> {
FileCollectionFingerprinter fingerprinter = fingerprinterRegistry.getFingerprinter(inputFileProperty.getNormalizer());
return fingerprinter.fingerprint(inputFileProperty.getPropertyFiles());
});
}
}
@Override
public void visitOutputProperties(OutputPropertyVisitor visitor) {
for (OutputFilePropertySpec property : context.getTaskProperties().getOutputFileProperties()) {
File outputFile = property.getOutputFile();
if (outputFile != null) {
visitor.visitOutputProperty(property.getPropertyName(), property.getOutputType(), outputFile);
}
}
}
@Override
public void visitOutputTrees(CacheableTreeVisitor visitor) {
for (OutputFilePropertySpec property : context.getTaskProperties().getOutputFileProperties()) {
if (!(property instanceof CacheableOutputFilePropertySpec)) {
throw new IllegalStateException("Non-cacheable property: " + property);
}
File cacheRoot = property.getOutputFile();
if (cacheRoot == null) {
continue;
}
visitor.visitOutputTree(property.getPropertyName(), property.getOutputType(), cacheRoot);
}
}
@Override
public void visitLocalState(LocalStateVisitor visitor) {
for (File localStateFile : context.getTaskProperties().getLocalStateFiles()) {
visitor.visitLocalStateRoot(localStateFile);
}
}
@Override
public OverlappingOutputHandling getOverlappingOutputHandling() {
return OverlappingOutputHandling.DETECT_OVERLAPS;
}
@Override
public boolean shouldCleanupOutputsOnNonIncrementalExecution() {
return getInputChangeTrackingStrategy() == InputChangeTrackingStrategy.INCREMENTAL_PARAMETERS;
}
@Override
public Optional> getChangingOutputs() {
switch (vfsInvalidationStrategy) {
case COMPLETE:
return Optional.empty();
case PARTIAL:
ImmutableList.Builder builder = ImmutableList.builder();
visitOutputProperties((propertyName, type, root) -> builder.add(root.getAbsolutePath()));
context.getTaskProperties().getDestroyableFiles().forEach(file -> builder.add(file.getAbsolutePath()));
context.getTaskProperties().getLocalStateFiles().forEach(file -> builder.add(file.getAbsolutePath()));
return Optional.of(builder.build());
default:
throw new AssertionError();
}
}
@Override
public Optional shouldDisableCaching(@Nullable OverlappingOutputs detectedOverlappingOutputs) {
if (task.isHasCustomActions()) {
LOGGER.info("Custom actions are attached to {}.", task);
}
return taskCacheabilityResolver.shouldDisableCaching(
context.getTaskProperties().hasDeclaredOutputs(),
context.getTaskProperties().getOutputFileProperties(),
task,
task.getOutputs().getCacheIfSpecs(),
task.getOutputs().getDoNotCacheIfSpecs(),
detectedOverlappingOutputs
);
}
@Override
public boolean isAllowedToLoadFromCache() {
return context.getTaskExecutionMode().isAllowedToUseCachedResults();
}
@Override
public Optional getTimeout() {
return Optional.ofNullable(task.getTimeout().getOrNull());
}
@SuppressWarnings("deprecation")
@Override
public InputChangeTrackingStrategy getInputChangeTrackingStrategy() {
for (InputChangesAwareTaskAction taskAction : task.getTaskActions()) {
if (taskAction instanceof IncrementalInputsTaskAction) {
return InputChangeTrackingStrategy.INCREMENTAL_PARAMETERS;
}
if (taskAction instanceof IncrementalTaskInputsTaskAction) {
return InputChangeTrackingStrategy.ALL_PARAMETERS;
}
}
return InputChangeTrackingStrategy.NONE;
}
@Override
public ImmutableSortedMap snapshotOutputsBeforeExecution() {
return snapshotOutputs();
}
@Override
public ImmutableSortedMap snapshotOutputsAfterExecution() {
return snapshotOutputs();
}
private ImmutableSortedMap snapshotOutputs() {
ImmutableSortedSet outputFilePropertySpecs = context.getTaskProperties().getOutputFileProperties();
return taskSnapshotter.snapshotTaskFiles(task, outputFilePropertySpecs);
}
@Override
public ImmutableSortedMap fingerprintAndFilterOutputSnapshots(
ImmutableSortedMap afterPreviousExecutionOutputFingerprints,
ImmutableSortedMap beforeExecutionOutputSnapshots,
ImmutableSortedMap afterExecutionOutputSnapshots,
boolean hasDetectedOverlappingOutputs
) {
return ImmutableSortedMap.copyOfSorted(
Maps.transformEntries(afterExecutionOutputSnapshots, (propertyName, afterExecutionOutputSnapshot) -> {
FileCollectionFingerprint afterLastExecutionFingerprint = afterPreviousExecutionOutputFingerprints.get(propertyName);
FileSystemSnapshot beforeExecutionOutputSnapshot = beforeExecutionOutputSnapshots.get(propertyName);
// This can never be null as it comes from an ImmutableMap's value
assert afterExecutionOutputSnapshot != null;
return fingerprintOutputSnapshot(afterLastExecutionFingerprint, beforeExecutionOutputSnapshot, afterExecutionOutputSnapshot, hasDetectedOverlappingOutputs);
}
)
);
}
private CurrentFileCollectionFingerprint fingerprintOutputSnapshot(@Nullable FileCollectionFingerprint afterLastExecutionFingerprint, FileSystemSnapshot beforeExecutionOutputSnapshot, FileSystemSnapshot afterExecutionOutputSnapshot, boolean hasOverlappingOutputs) {
List roots = hasOverlappingOutputs
? OutputFilterUtil.filterOutputSnapshotAfterExecution(afterLastExecutionFingerprint, beforeExecutionOutputSnapshot, afterExecutionOutputSnapshot)
: ImmutableList.of(afterExecutionOutputSnapshot);
return DefaultCurrentFileCollectionFingerprint.from(roots, AbsolutePathFingerprintingStrategy.IGNORE_MISSING);
}
@Override
public long markExecutionTime() {
return context.markExecutionTime();
}
@Override
public void markLegacySnapshottingInputsStarted() {
// Note: this operation should be added only if the scan plugin is applied, but SnapshotTaskInputsOperationIntegrationTest
// expects it to be added also when the build cache is enabled (but not the scan plugin)
if (buildCacheState == BuildCacheState.ENABLED || scanPluginState == ScanPluginState.APPLIED) {
ExecutingBuildOperation operation = buildOperationExecutor.start(BuildOperationDescriptor
.displayName("Snapshot task inputs for " + task.getIdentityPath())
.name("Snapshot task inputs")
.details(SnapshotTaskInputsBuildOperationType.Details.INSTANCE));
context.setSnapshotTaskInputsBuildOperation(operation);
}
}
@Override
public void markLegacySnapshottingInputsFinished(CachingState cachingState) {
context.removeSnapshotTaskInputsBuildOperation()
.ifPresent(operation -> operation.setResult(new SnapshotTaskInputsBuildOperationResult(cachingState)));
}
@Override
public void ensureLegacySnapshottingInputsClosed() {
// If the operation hasn't finished normally (because of a shortcut or an error), we close it without a cache key
context.removeSnapshotTaskInputsBuildOperation()
.ifPresent(operation -> operation.setResult(new SnapshotTaskInputsBuildOperationResult(CachingState.NOT_DETERMINED)));
}
@Override
public void validate(WorkValidationContext validationContext) {
FileOperations fileOperations = ((ProjectInternal) task.getProject()).getFileOperations();
Class taskType = GeneratedSubclasses.unpackType(task);
// TODO This should probably use the task class info store
boolean cacheable = taskType.isAnnotationPresent(CacheableTask.class);
context.getTaskProperties().validate(new DefaultTaskValidationContext(
fileOperations,
reservedFileSystemLocationRegistry,
validationContext.createContextFor(taskType, cacheable)
));
}
@Override
public Optional skipIfInputsEmpty(ImmutableSortedMap outputFilesAfterPreviousExecution) {
TaskProperties properties = context.getTaskProperties();
FileCollection inputFiles = properties.getInputFiles();
FileCollection sourceFiles = properties.getSourceFiles();
boolean hasSourceFiles = properties.hasSourceFiles();
return emptySourceTaskSkipper.skipIfEmptySources(task, hasSourceFiles, inputFiles, sourceFiles, outputFilesAfterPreviousExecution);
}
@Override
public String getDisplayName() {
return task.toString();
}
}
private void executeActions(TaskInternal task, @Nullable InputChangesInternal inputChanges) {
boolean hasTaskListener = listenerManager.hasListeners(TaskActionListener.class) || listenerManager.hasListeners(TaskExecutionListener.class);
Iterator actions = new ArrayList<>(task.getTaskActions()).iterator();
while (actions.hasNext()) {
InputChangesAwareTaskAction action = actions.next();
task.getState().setDidWork(true);
task.getStandardOutputCapture().start();
boolean hasMoreWork = hasTaskListener || actions.hasNext();
try {
executeAction(action.getDisplayName(), task, action, inputChanges, hasMoreWork);
} catch (StopActionException e) {
// Ignore
LOGGER.debug("Action stopped by some action with message: {}", e.getMessage());
} catch (StopExecutionException e) {
LOGGER.info("Execution stopped by some action with message: {}", e.getMessage());
break;
} finally {
task.getStandardOutputCapture().stop();
}
}
}
private void executeAction(String actionDisplayName, TaskInternal task, InputChangesAwareTaskAction action, @Nullable InputChangesInternal inputChanges, boolean hasMoreWork) {
if (inputChanges != null) {
action.setInputChanges(inputChanges);
}
buildOperationExecutor.run(new RunnableBuildOperation() {
@Override
public BuildOperationDescriptor.Builder description() {
return BuildOperationDescriptor
.displayName(actionDisplayName + " for " + task.getIdentityPath().getPath())
.name(actionDisplayName)
.details(ExecuteTaskActionBuildOperationType.DETAILS_INSTANCE);
}
@Override
public void run(BuildOperationContext context) {
try {
BuildOperationRef currentOperation = buildOperationExecutor.getCurrentOperation();
Throwable actionFailure = null;
try {
action.execute(task);
} catch (Throwable t) {
actionFailure = t;
} finally {
action.clearInputChanges();
}
try {
asyncWorkTracker.waitForCompletion(currentOperation, hasMoreWork ? RELEASE_AND_REACQUIRE_PROJECT_LOCKS : RELEASE_PROJECT_LOCKS);
} catch (Throwable t) {
List failures = Lists.newArrayList();
if (actionFailure != null) {
failures.add(actionFailure);
}
if (t instanceof MultiCauseException) {
failures.addAll(((MultiCauseException) t).getCauses());
} else {
failures.add(t);
}
if (failures.size() > 1) {
throw new MultipleTaskActionFailures("Multiple task action failures occurred:", failures);
} else {
throw UncheckedException.throwAsUncheckedException(failures.get(0));
}
}
if (actionFailure != null) {
context.failed(actionFailure);
throw UncheckedException.throwAsUncheckedException(actionFailure);
}
} finally {
context.setResult(ExecuteTaskActionBuildOperationType.RESULT_INSTANCE);
}
}
});
}
@Contextual
private static class MultipleTaskActionFailures extends DefaultMultiCauseException {
public MultipleTaskActionFailures(String message, Iterable causes) {
super(message, causes);
}
}
private class PreviousOutputFileCollection extends LazilyInitializedFileCollection {
private final TaskInternal task;
private final AfterPreviousExecutionState previousExecution;
public PreviousOutputFileCollection(TaskInternal task, AfterPreviousExecutionState previousExecution) {
this.task = task;
this.previousExecution = previousExecution;
}
@Override
public FileCollection createDelegate() {
ImmutableCollection outputFingerprints = previousExecution.getOutputFileProperties().values();
Set outputs = new HashSet<>();
for (FileCollectionFingerprint fileCollectionFingerprint : outputFingerprints) {
for (String absolutePath : fileCollectionFingerprint.getFingerprints().keySet()) {
outputs.add(new File(absolutePath));
}
}
return fileCollectionFactory.fixed(outputs);
}
@Override
public String getDisplayName() {
return "previous output files of " + task.toString();
}
}
}
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