org.apache.sqoop.utils.TestConnectorClassLoader.java Source code

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Here is the source code for org.apache.sqoop.utils.TestConnectorClassLoader.java

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/*
 * Copyright (C) 2016 Stratio (http://stratio.com)
 *
 * 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.apache.sqoop.utils;

import static org.apache.sqoop.utils.ConnectorClassLoader.constructUrlsFromClasspath;
import static org.apache.sqoop.utils.ConnectorClassLoader.isSystemClass;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertNull;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertTrue;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.List;
import java.util.jar.JarOutputStream;
import java.util.zip.ZipEntry;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

import com.google.common.base.Splitter;
import com.google.common.collect.Lists;

public class TestConnectorClassLoader {
    private static File testDir = new File(
            System.getProperty("maven.build.directory", System.getProperty("java.io.tmpdir")),
            "connectorclassloader");

    @BeforeMethod(alwaysRun = true)
    public void setUp() {
        FileUtils.deleteQuietly(testDir);
        testDir.mkdirs();
    }

    @Test
    public void testConstructUrlsFromClasspath() throws Exception {
        File file = new File(testDir, "file");
        assertTrue(file.createNewFile(), "Create file");

        File dir = new File(testDir, "dir");
        assertTrue(dir.mkdir(), "Make dir");

        File jarsDir = new File(testDir, "jarsdir");
        assertTrue(jarsDir.mkdir(), "Make jarsDir");
        File nonJarFile = new File(jarsDir, "nonjar");
        assertTrue(nonJarFile.createNewFile(), "Create non-jar file");
        File jarFile = new File(jarsDir, "a.jar");
        assertTrue(jarFile.createNewFile(), "Create jar file");

        File nofile = new File(testDir, "nofile");
        // don't create nofile

        StringBuilder cp = new StringBuilder();
        cp.append(file.getAbsolutePath()).append(File.pathSeparator).append(dir.getAbsolutePath())
                .append(File.pathSeparator).append(jarsDir.getAbsolutePath() + "/*").append(File.pathSeparator)
                .append(nofile.getAbsolutePath()).append(File.pathSeparator).append(nofile.getAbsolutePath() + "/*")
                .append(File.pathSeparator);

        URL[] urls = constructUrlsFromClasspath(cp.toString());

        assertEquals(3, urls.length);
        assertEquals(file.toURI().toURL(), urls[0]);
        assertEquals(dir.toURI().toURL(), urls[1]);
        assertEquals(jarFile.toURI().toURL(), urls[2]);
        // nofile should be ignored
    }

    @Test
    public void testIsSystemClass() {
        testIsSystemClassInternal("");
    }

    @Test
    public void testIsSystemNestedClass() {
        testIsSystemClassInternal("$Klass");
    }

    private void testIsSystemClassInternal(String nestedClass) {
        assertFalse(isSystemClass("org.example.Foo" + nestedClass, null));
        assertTrue(isSystemClass("org.example.Foo" + nestedClass, classes("org.example.Foo")));
        assertTrue(isSystemClass("/org.example.Foo" + nestedClass, classes("org.example.Foo")));
        assertTrue(isSystemClass("org.example.Foo" + nestedClass, classes("org.example.")));
        assertTrue(isSystemClass("net.example.Foo" + nestedClass, classes("org.example.,net.example.")));
        assertFalse(isSystemClass("org.example.Foo" + nestedClass, classes("-org.example.Foo,org.example.")));
        assertTrue(isSystemClass("org.example.Bar" + nestedClass, classes("-org.example.Foo.,org.example.")));
        assertFalse(isSystemClass("org.example.Foo" + nestedClass, classes("org.example.,-org.example.Foo")));
        assertFalse(isSystemClass("org.example.Foo" + nestedClass, classes("org.example.Foo,-org.example.Foo")));
    }

    private List<String> classes(String classes) {
        return Lists.newArrayList(Splitter.on(',').split(classes));
    }

    @Test
    public void testGetResource() throws IOException {
        URL testJar = makeTestJar().toURI().toURL();

        ClassLoader currentClassLoader = getClass().getClassLoader();
        ClassLoader connectorClassloader = new ConnectorClassLoader(new URL[] { testJar }, currentClassLoader, null,
                false);

        assertNull(currentClassLoader.getResourceAsStream("resource.txt"),
                "Resource should be null for current classloader");

        InputStream in = connectorClassloader.getResourceAsStream("resource.txt");
        assertNotNull(in, "Resource should not be null for connector classloader");
        assertEquals("hello", IOUtils.toString(in));
    }

    private File makeTestJar() throws IOException {
        File jarFile = new File(testDir, "test.jar");
        JarOutputStream out = new JarOutputStream(new FileOutputStream(jarFile));
        ZipEntry entry = new ZipEntry("resource.txt");
        out.putNextEntry(entry);
        out.write("hello".getBytes());
        out.closeEntry();
        out.close();
        return jarFile;
    }
}