/*
* 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.tasks.execution;
import org.gradle.api.GradleException;
import org.gradle.api.internal.TaskInternal;
import org.gradle.api.internal.changedetection.TaskArtifactStateRepository;
import org.gradle.api.internal.tasks.TaskExecuter;
import org.gradle.api.internal.tasks.TaskExecutionContext;
import org.gradle.api.internal.tasks.TaskStateInternal;
import org.gradle.api.tasks.TaskExecutionException;
import org.gradle.caching.internal.tasks.TaskOutputCachingBuildCacheKey;
public class VerifyNoInputChangesTaskExecuter implements TaskExecuter {
private TaskExecuter delegate;
private TaskArtifactStateRepository repository;
public VerifyNoInputChangesTaskExecuter(TaskArtifactStateRepository repository, TaskExecuter delegate) {
this.delegate = delegate;
this.repository = repository;
}
@Override
public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
TaskOutputCachingBuildCacheKey beforeExecution = context.getBuildCacheKey();
delegate.execute(task, state, context);
if (beforeExecution.isValid()) {
TaskOutputCachingBuildCacheKey afterExecution = repository.getStateFor(task).calculateCacheKey();
if (!afterExecution.isValid()) {
throw new TaskExecutionException(task, new GradleException("The build cache key became invalid after the task has been executed!"));
}
if (!beforeExecution.getHashCode().equals(afterExecution.getHashCode())) {
throw new TaskExecutionException(task, new GradleException("The inputs for the task changed during the execution! Check if you have a `doFirst` changing the inputs."));
}
}
}
}