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Micro Distribution of the Payara Project
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/*
 *    DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 *    Copyright (c) [2020] Payara Foundation and/or its affiliates. All rights reserved.
 *
 *    The contents of this file are subject to the terms of either the GNU
 *    General Public License Version 2 only ("GPL") or the Common Development
 *    and Distribution License("CDDL") (collectively, the "License").  You
 *    may not use this file except in compliance with the License.  You can
 *    obtain a copy of the License at
 *    https://github.com/payara/Payara/blob/master/LICENSE.txt
 *    See the License for the specific
 *    language governing permissions and limitations under the License.
 *
 *    When distributing the software, include this License Header Notice in each
 *    file and include the License file at glassfish/legal/LICENSE.txt.
 *
 *    GPL Classpath Exception:
 *    The Payara Foundation designates this particular file as subject to the "Classpath"
 *    exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 *    file that accompanied this code.
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package fish.payara.micro.boot.runtime;

import com.sun.enterprise.module.ModuleDefinition;
import com.sun.enterprise.module.ModulesRegistry;
import com.sun.enterprise.module.common_impl.AbstractFactory;
import com.sun.enterprise.module.common_impl.ModuleId;

import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.util.jar.JarFile;
import java.util.stream.Stream;

class JarManifestHk2Factory extends AbstractFactory {

    private final ClassLoader classLoader;
    private final JarManifestModuleRegistry modulesRegistry;

    static synchronized void initialize(ClassLoader cl, URI bootJar) throws IOException {
        // we need to get absolute paths of the jar our classpath is made of to make ClassPathModulesRegistry
        // reliably create modules
        URI[] locations = Stream.of(readClassPath(bootJar).split(" "))
                .map(bootJar::resolve)
                .toArray(URI[]::new);


        JarManifestHk2Factory factory = new JarManifestHk2Factory(cl, locations);
        Instance = factory;
        factory.modulesRegistry.initialize();
    }

    private static String readClassPath(URI bootJar) throws IOException {
        try (JarFile bootJarFile = new JarFile(new File(bootJar))) {
            return bootJarFile.getManifest().getMainAttributes().getValue("Class-Path");
        }
    }

    public JarManifestHk2Factory(ClassLoader cl, URI[] locations) throws IOException {
        this.classLoader = cl;
        this.modulesRegistry = new JarManifestModuleRegistry(cl, locations);
    }

    @Override
    public ModulesRegistry createModulesRegistry() {
        return modulesRegistry;
    }

    @Override
    public ModuleId createModuleId(String name, String version) {
        return new ModuleId(name);
    }

    @Override
    public ModuleId createModuleId(ModuleDefinition md) {
        return new ModuleId(md.getName());
    }
}