org.springframework.batch.core.scope.AsyncStepScopeIntegrationTests.java Source code

Introduction

Here is the source code for org.springframework.batch.core.scope.AsyncStepScopeIntegrationTests.java

Source

/*
 * Copyright 2008-2012 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.springframework.batch.core.scope;

import static org.junit.Assert.assertEquals;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.StepExecution;
import org.springframework.batch.core.scope.context.StepContext;
import org.springframework.batch.core.scope.context.StepSynchronizationManager;
import org.springframework.batch.item.ExecutionContext;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.core.task.SimpleAsyncTaskExecutor;
import org.springframework.core.task.TaskExecutor;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@ContextConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
public class AsyncStepScopeIntegrationTests implements BeanFactoryAware {

    private Log logger = LogFactory.getLog(getClass());

    @Autowired
    @Qualifier("simple")
    private Collaborator simple;

    private TaskExecutor taskExecutor = new SimpleAsyncTaskExecutor();

    private ListableBeanFactory beanFactory;

    private int beanCount;

    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        this.beanFactory = (ListableBeanFactory) beanFactory;
    }

    @Before
    public void countBeans() {
        StepSynchronizationManager.release();
        beanCount = beanFactory.getBeanDefinitionCount();
    }

    @After
    public void cleanUp() {
        StepSynchronizationManager.close();
        // Check that all temporary bean definitions are cleaned up
        assertEquals(beanCount, beanFactory.getBeanDefinitionCount());
    }

    @Test
    public void testSimpleProperty() throws Exception {
        StepExecution stepExecution = new StepExecution("step", new JobExecution(0L), 123L);
        ExecutionContext executionContext = stepExecution.getExecutionContext();
        executionContext.put("foo", "bar");
        StepSynchronizationManager.register(stepExecution);
        assertEquals("bar", simple.getName());
    }

    @Test
    public void testGetMultipleInMultipleThreads() throws Exception {

        List<FutureTask<String>> tasks = new ArrayList<FutureTask<String>>();

        for (int i = 0; i < 12; i++) {
            final String value = "foo" + i;
            final Long id = 123L + i;
            FutureTask<String> task = new FutureTask<String>(new Callable<String>() {
                @Override
                public String call() throws Exception {
                    StepExecution stepExecution = new StepExecution(value, new JobExecution(0L), id);
                    ExecutionContext executionContext = stepExecution.getExecutionContext();
                    executionContext.put("foo", value);
                    StepContext context = StepSynchronizationManager.register(stepExecution);
                    logger.debug("Registered: " + context.getStepExecutionContext());
                    try {
                        return simple.getName();
                    } finally {
                        StepSynchronizationManager.close();
                    }
                }
            });
            tasks.add(task);
            taskExecutor.execute(task);
        }

        int i = 0;
        for (FutureTask<String> task : tasks) {
            assertEquals("foo" + i, task.get());
            i++;
        }

    }

    @Test
    public void testGetSameInMultipleThreads() throws Exception {

        List<FutureTask<String>> tasks = new ArrayList<FutureTask<String>>();
        final StepExecution stepExecution = new StepExecution("foo", new JobExecution(0L), 123L);
        ExecutionContext executionContext = stepExecution.getExecutionContext();
        executionContext.put("foo", "foo");
        StepSynchronizationManager.register(stepExecution);
        assertEquals("foo", simple.getName());

        for (int i = 0; i < 12; i++) {
            final String value = "foo" + i;
            FutureTask<String> task = new FutureTask<String>(new Callable<String>() {
                @Override
                public String call() throws Exception {
                    ExecutionContext executionContext = stepExecution.getExecutionContext();
                    executionContext.put("foo", value);
                    StepContext context = StepSynchronizationManager.register(stepExecution);
                    logger.debug("Registered: " + context.getStepExecutionContext());
                    try {
                        return simple.getName();
                    } finally {
                        StepSynchronizationManager.close();
                    }
                }
            });
            tasks.add(task);
            taskExecutor.execute(task);
        }

        for (FutureTask<String> task : tasks) {
            assertEquals("foo", task.get());
        }

        // Don't close the outer scope until all tasks are finished. This should
        // always be the case if using an AbstractStep
        StepSynchronizationManager.close();

    }

}