org.springframework.integration.samples.fileprocessing.FileProcessingTest.java Source code

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Here is the source code for org.springframework.integration.samples.fileprocessing.FileProcessingTest.java

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/*
 * Copyright 2002-2017 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.integration.samples.fileprocessing;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.Before;
import org.junit.Test;

import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.messaging.PollableChannel;

/**
 * @author Oleg Zhurakousky
 * @author Gary Russell
 *
 */
public class FileProcessingTest {
    private final int fileCount = 5;
    private final Log logger = LogFactory.getLog(FileProcessingTest.class);

    @Before
    public void createDirectory() {
        File directory = new File("input");
        if (directory.exists()) {
            directory.delete();
        }
        directory.mkdir();
    }

    @Test
    public void testSequentialFileProcessing() throws Exception {
        logger.info("\n\n#### Starting Sequential processing test ####");
        logger.info("Populating directory with files");
        for (int i = 0; i < fileCount; i++) {
            File file = new File("input/file_" + i + ".txt");
            BufferedWriter out = new BufferedWriter(new FileWriter(file));
            out.write("hello " + i);
            out.close();
        }
        logger.info("Populated directory with files");
        Thread.sleep(2000);
        logger.info("Starting Spring Integration Sequential File processing");
        ConfigurableApplicationContext ac = new ClassPathXmlApplicationContext(
                "META-INF/spring/integration/sequentialFileProcessing-config.xml");
        PollableChannel filesOutChannel = ac.getBean("filesOutChannel", PollableChannel.class);
        for (int i = 0; i < fileCount; i++) {
            logger.info("Finished processing " + filesOutChannel.receive(10000).getPayload());
        }
        ac.stop();
    }

    @Test
    public void testConcurrentFileProcessing() throws Exception {
        logger.info("\n\n#### Starting Concurrent processing test #### ");
        logger.info("Populating directory with files");
        for (int i = 0; i < fileCount; i++) {
            File file = new File("input/file_" + i + ".txt");
            BufferedWriter out = new BufferedWriter(new FileWriter(file));
            out.write("hello " + i);
            out.close();
        }
        logger.info("Populated directory with files");
        Thread.sleep(2000);
        logger.info("Starting Spring Integration Sequential File processing");
        ConfigurableApplicationContext ac = new ClassPathXmlApplicationContext(
                "/META-INF/spring/integration/concurrentFileProcessing-config.xml");
        PollableChannel filesOutChannel = ac.getBean("filesOutChannel", PollableChannel.class);
        for (int i = 0; i < fileCount; i++) {
            logger.info("Finished processing " + filesOutChannel.receive(10000).getPayload());
        }
        ac.close();
    }
}