org.mule.module.launcher.application.MuleApplicationClassLoaderFactory Maven / Gradle / Ivy

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/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.module.launcher.application;

import org.mule.module.launcher.GoodCitizenClassLoader;
import org.mule.module.launcher.MuleApplicationClassLoader;
import org.mule.module.launcher.nativelib.NativeLibraryFinderFactory;
import org.mule.module.launcher.artifact.ArtifactClassLoader;
import org.mule.module.launcher.descriptor.ApplicationDescriptor;
import org.mule.module.launcher.domain.DomainClassLoaderRepository;
import org.mule.module.launcher.plugin.MulePluginsClassLoader;
import org.mule.module.launcher.plugin.PluginDescriptor;

import java.net.URL;
import java.util.Set;

/**
 * Creates {@link MuleApplicationClassLoader} instances based on the
 * application descriptor.
 */
public class MuleApplicationClassLoaderFactory implements ApplicationClassLoaderFactory
{

    private final DomainClassLoaderRepository domainClassLoaderRepository;
    private final NativeLibraryFinderFactory nativeLibraryFinderFactory;

    public MuleApplicationClassLoaderFactory(DomainClassLoaderRepository domainClassLoaderRepository, NativeLibraryFinderFactory nativeLibraryFinderFactory)
    {
        this.domainClassLoaderRepository = domainClassLoaderRepository;
        this.nativeLibraryFinderFactory = nativeLibraryFinderFactory;
    }

    @Override
    public ArtifactClassLoader create(ApplicationDescriptor descriptor)
    {
        final String domain = descriptor.getDomain();
        ClassLoader parent;
        if (domain == null)
        {
            parent = domainClassLoaderRepository.getDefaultDomainClassLoader().getClassLoader();
        }
        else
        {
            parent = domainClassLoaderRepository.getDomainClassLoader(domain).getClassLoader();
        }
        final Set plugins = descriptor.getPlugins();
        if (!plugins.isEmpty())
        {
            // Re-assigns parent if there are shared plugin libraries
            URL[] pluginLibs = descriptor.getSharedPluginLibs();
            if (pluginLibs != null && pluginLibs.length != 0)
            {
                parent = new GoodCitizenClassLoader(pluginLibs, parent);
            }

            // re-assign parent ref if any plugins deployed, will be used by the MuleAppCL
            parent = new MulePluginsClassLoader(parent, plugins);
        }

        return new MuleApplicationClassLoader(descriptor.getName(), parent, descriptor.getLoaderOverride(), nativeLibraryFinderFactory.create(descriptor.getName()));
    }
}