Jersey2846ITCase.java

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package org.glassfish.jersey.tests.integration.jersey2846;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.function.Predicate;

import javax.ws.rs.client.Entity;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.media.multipart.FormDataBodyPart;
import org.glassfish.jersey.media.multipart.FormDataContentDisposition;
import org.glassfish.jersey.media.multipart.FormDataMultiPart;
import org.glassfish.jersey.media.multipart.MultiPartFeature;
import org.glassfish.jersey.test.JerseyTest;
import org.glassfish.jersey.test.external.ExternalTestContainerFactory;
import org.glassfish.jersey.test.spi.TestContainerException;
import org.glassfish.jersey.test.spi.TestContainerFactory;

import org.junit.Test;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

/**
 * JERSEY-2846 reproducer.
 *
 * @author Michal Gajdos
 */
public class Jersey2846ITCase extends JerseyTest {

    @Override
    protected Application configure() {
        return new Application();
    }

    @Override
    protected TestContainerFactory getTestContainerFactory() throws TestContainerException {
        return new ExternalTestContainerFactory();
    }

    @Override
    protected void configureClient(final ClientConfig config) {
        config.register(MultiPartFeature.class);
    }

    @Test
    public void tempFileDeletedAfterSuccessfulProcessing() throws Exception {
        _testSmall("SuccessfulMethod", 200);
    }

    @Test
    public void tempFileDeletedAfterExceptionInMethod() throws Exception {
        _testSmall("ExceptionInMethod", 500);
    }

    @Test
    public void tempFileDeletedAfterSuccessfulProcessingBigEntity() throws Exception {
        _testBig("SuccessfulMethod", 200);
    }

    @Test
    public void tempFileDeletedAfterExceptionInMethodBigEntity() throws Exception {
        _testBig("ExceptionInMethod", 500);
    }

    public void _testBig(final String path, final int status) throws Exception {
        final byte[] array = new byte[8196];
        Arrays.fill(array, (byte) 52);

        _test(path, status, array);
    }

    public void _testSmall(final String path, final int status) throws Exception {
        _test(path, status, "CONTENT");
    }

    public void _test(final String path, final int status, final Object entity) throws Exception {
        final String tempDir = System.getProperty("java.io.tmpdir");

        // Get number of matching MIME*tmp files (the number should be the same at the end of the test).
        final int expectedTempFiles = matchingTempFiles(tempDir);

        final FormDataMultiPart multipart = new FormDataMultiPart();
        final FormDataBodyPart bodypart = new FormDataBodyPart(FormDataContentDisposition.name("file").fileName("file").build(),
                entity, MediaType.TEXT_PLAIN_TYPE);
        multipart.bodyPart(bodypart);

        final Response response = target().path(path)
                .request()
                .post(Entity.entity(multipart, MediaType.MULTIPART_FORM_DATA));

        // Get Response ...
        assertThat(response.getStatus(), is(status));
        // Wait a second to make sure the files don't exist.
        Thread.sleep(1000);

        // Make sure that the message and it's parts have been closed and temporary files deleted.
        assertThat("Temporary files were not deleted", matchingTempFiles(tempDir), is(expectedTempFiles));
    }

    private int matchingTempFiles(final String tempDir) throws IOException {
        return (int) Files.walk(Paths.get(tempDir)).filter(path -> {
            final String name = path.getFileName().toString();
            return (name.startsWith("rep") || name.startsWith("MIME"))
                   && name.endsWith("tmp");
        }).count();
    }
}