/*
* 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.Lists;
import org.gradle.api.GradleException;
import org.gradle.api.execution.TaskActionListener;
import org.gradle.api.internal.TaskInternal;
import org.gradle.api.internal.tasks.ContextAwareTaskAction;
import org.gradle.api.internal.tasks.TaskExecuter;
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.logging.Logger;
import org.gradle.api.logging.Logging;
import org.gradle.api.tasks.StopActionException;
import org.gradle.api.tasks.StopExecutionException;
import org.gradle.api.tasks.TaskExecutionException;
import org.gradle.internal.UncheckedException;
import org.gradle.internal.exceptions.Contextual;
import org.gradle.internal.exceptions.DefaultMultiCauseException;
import org.gradle.internal.exceptions.MultiCauseException;
import org.gradle.internal.operations.BuildOperationContext;
import org.gradle.internal.operations.BuildOperationExecutor;
import org.gradle.internal.progress.BuildOperationState;
import org.gradle.internal.operations.RunnableBuildOperation;
import org.gradle.internal.progress.BuildOperationDescriptor;
import org.gradle.internal.work.AsyncWorkTracker;
import java.util.ArrayList;
import java.util.List;
/**
* A {@link org.gradle.api.internal.tasks.TaskExecuter} which executes the actions of a task.
*/
public class ExecuteActionsTaskExecuter implements TaskExecuter {
private static final Logger LOGGER = Logging.getLogger(ExecuteActionsTaskExecuter.class);
private final TaskOutputsGenerationListener outputsGenerationListener;
private final TaskActionListener listener;
private final BuildOperationExecutor buildOperationExecutor;
private final AsyncWorkTracker asyncWorkTracker;
public ExecuteActionsTaskExecuter(TaskOutputsGenerationListener outputsGenerationListener, TaskActionListener taskActionListener, BuildOperationExecutor buildOperationExecutor, AsyncWorkTracker asyncWorkTracker) {
this.outputsGenerationListener = outputsGenerationListener;
this.listener = taskActionListener;
this.buildOperationExecutor = buildOperationExecutor;
this.asyncWorkTracker = asyncWorkTracker;
}
public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
listener.beforeActions(task);
if (!task.getTaskActions().isEmpty()) {
outputsGenerationListener.beforeTaskOutputsGenerated();
}
state.setExecuting(true);
try {
GradleException failure = executeActions(task, state, context);
if (failure != null) {
state.setOutcome(failure);
} else {
state.setOutcome(
state.getDidWork() ? TaskExecutionOutcome.EXECUTED : TaskExecutionOutcome.UP_TO_DATE
);
}
} finally {
state.setExecuting(false);
listener.afterActions(task);
}
}
private GradleException executeActions(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
LOGGER.debug("Executing actions for {}.", task);
final List<ContextAwareTaskAction> actions = new ArrayList<ContextAwareTaskAction>(task.getTaskActions());
int actionNumber = 1;
for (ContextAwareTaskAction action : actions) {
state.setDidWork(true);
task.getStandardOutputCapture().start();
try {
executeAction("Execute task action " + actionNumber + "/" + actions.size() + " for " + task.getPath(), task, action, context);
} 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;
} catch (Throwable t) {
return new TaskExecutionException(task, t);
} finally {
task.getStandardOutputCapture().stop();
}
actionNumber++;
}
return null;
}
private void executeAction(final String displayName, final TaskInternal task, final ContextAwareTaskAction action, TaskExecutionContext context) {
action.contextualise(context);
buildOperationExecutor.run(new RunnableBuildOperation() {
@Override
public BuildOperationDescriptor.Builder description() {
return BuildOperationDescriptor.displayName(displayName);
}
@Override
public void run(BuildOperationContext context) {
BuildOperationState currentOperation = buildOperationExecutor.getCurrentOperation();
Throwable actionFailure = null;
try {
action.execute(task);
} catch (Throwable t) {
actionFailure = t;
} finally {
action.contextualise(null);
}
try {
asyncWorkTracker.waitForCompletion(currentOperation);
} catch (Throwable t) {
List<Throwable> 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) {
throw UncheckedException.throwAsUncheckedException(actionFailure);
}
}
});
}
@Contextual
private static class MultipleTaskActionFailures extends DefaultMultiCauseException {
public MultipleTaskActionFailures(String message, Throwable... causes) {
super(message, causes);
}
public MultipleTaskActionFailures(String message, Iterable<? extends Throwable> causes) {
super(message, causes);
}
}
}