/*

 * Copyright (c) 2009, 2017, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 4167874

 * @modules java.logging

 *          jdk.httpserver

 *          jdk.compiler

 * @library ../../../../com/sun/net/httpserver

 *          /test/lib

 * @build jdk.test.lib.compiler.CompilerUtils

 *        jdk.test.lib.util.FileUtils

 *        jdk.test.lib.Platform

 * @run main/othervm CloseTest

 * @summary URL-downloaded jar files can consume all available file descriptors

 */

import java.io.File;

import java.io.IOException;

import java.lang.reflect.Method;

import java.net.URLClassLoader;

import java.net.InetSocketAddress;

import java.net.URL;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import jdk.test.lib.compiler.CompilerUtils;

import com.sun.net.httpserver.HttpContext;

import com.sun.net.httpserver.HttpServer;

import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;

public class CloseTest extends Common {

    private static final String WORK_DIR = System.getProperty("user.dir")

            + "/";

//

// needs two jar files test1.jar and test2.jar with following structure

//

// com/foo/TestClass

// com/foo/TestClass1

// com/foo/Resource1

// com/foo/Resource2

//

// and a directory hierarchy with the same structure/contents

    public static void main(String args[]) throws Exception {

        setup();

        startHttpServer(WORK_DIR + "serverRoot/");

        String testjar = WORK_DIR + "test.jar";

        copyFile(WORK_DIR + "test1.jar", testjar);

        test(testjar, 1);

        // repeat test with different implementation

        // of test.jar (whose TestClass.getValue() returns 2

        copyFile(WORK_DIR + "test2.jar", testjar);

        test(testjar, 2);

        // repeat test using a directory of files

        String testdir = WORK_DIR + "testdir/";

        rm_minus_rf(new File(testdir));

        copyDir(WORK_DIR + "test1/", testdir);

        test(testdir, 1);

        testdir = WORK_DIR + "testdir/";

        rm_minus_rf(new File(testdir));

        copyDir(WORK_DIR + "test2/", testdir);

        test(testdir, 2);

        getHttpServer().stop(3);

    }

    // create a loader on jarfile (or directory), plus a http loader

    // load a class , then look for a resource

    // also load a class from http loader

    // then close the loader

    // check further new classes/resources cannot be loaded

    // check jar (or dir) can be deleted

    // check existing classes can be loaded

    // check boot classes can be loaded

    static void test(String name, int expectedValue) throws Exception {

        URL url = new URL("file", null, name);

        URL url2 = getServerURL();

        System.out.println("Doing tests with URL: " + url + " and " + url2);

        URL[] urls = new URL[2];

        urls[0] = url;

        urls[1] = url2;

        URLClassLoader loader = new URLClassLoader(urls);

        Class testclass = loadClass("com.foo.TestClass", loader, true);

        Class class2 = loadClass("Test", loader, true); // from http

        class2.newInstance();

        Object test = testclass.newInstance();

        Method method = testclass.getDeclaredMethods()[0]; // int getValue();

        int res = (Integer) method.invoke(test);

        if (res != expectedValue) {

            throw new RuntimeException("wrong value from getValue() [" + res +

                    "/" + expectedValue + "]");

        }

        // should find /resource1

        URL u1 = loader.findResource("com/foo/Resource1");

        if (u1 == null) {

            throw new RuntimeException("can't find com/foo/Resource1 in test1.jar");

        }

        loader.close();

        // should NOT find /resource2 even though it is in jar

        URL u2 = loader.findResource("com/foo/Resource2");

        if (u2 != null) {

            throw new RuntimeException("com/foo/Resource2 unexpected in test1.jar");

        }

        // load tests

        loadClass("com.foo.TestClass1", loader, false);

        loadClass("com.foo.TestClass", loader, true);

        loadClass("java.util.ArrayList", loader, true);

        // now check we can delete the path

        rm_minus_rf(new File(name));

        System.out.println(" ... OK");

    }

    static HttpServer httpServer;

    static HttpServer getHttpServer() {

        return httpServer;

    }

    static URL getServerURL() throws Exception {

        int port = httpServer.getAddress().getPort();

        String s = "http://127.0.0.1:" + port + "/";

        return new URL(s);

    }

    static void startHttpServer(String docroot) throws Exception {

        httpServer = HttpServer.create(new InetSocketAddress(0), 10);

        HttpContext ctx = httpServer.createContext(

                "/", new FileServerHandler(docroot)

        );

        httpServer.start();

    }

    /**

     * Prepare jars files for the tests

     */

    private static void setup () throws IOException {

        String[] tests = new String[]{"test1", "test2"};

        Path workDir = Paths.get(WORK_DIR);

        Path testSrc = Paths.get(System.getProperty("test.src"));

        for (String test : tests) {

            Path testSrcDir =  testSrc.resolve(test);

            Path testTargetDir = workDir.resolve(test);

            // Compile sources for corresponding test

            CompilerUtils.compile(testSrcDir, testTargetDir);

            // Copy all resources

            Path packages = Paths.get("com", "foo");

            Path copySrcDir = testSrcDir.resolve(packages);

            Path copyTargetDir = testTargetDir.resolve(packages);

            Files.createDirectories(copyTargetDir);

            Path res1 = Paths.get("Resource1");

            Path res2 = Paths.get("Resource2");

            Files.copy(copySrcDir.resolve(res1), copyTargetDir.resolve(res1),

                       REPLACE_EXISTING);

            Files.copy(copySrcDir.resolve(res2), copyTargetDir.resolve(res2),

                       REPLACE_EXISTING);

            // Create jar

            JarUtils.createJarFile(workDir.resolve(test + ".jar"), testTargetDir);

        }

        // Copy and compile server test class

        Path serverRoot = Paths.get("serverRoot");

        Path targetDir = workDir.resolve(serverRoot);

        Path file = Paths.get("Test.java");

        Files.createDirectories(targetDir);

        Files.copy(testSrc.resolve(serverRoot).resolve(file),

                   targetDir.resolve(file), REPLACE_EXISTING);

        CompilerUtils.compile(targetDir, targetDir);

    }

}