/*
 * oxCore is available under the MIT License (2008). See http://opensource.org/licenses/MIT for full text.
 *
 * Copyright (c) 2014, Gluu
 */
package org.xdi.service.custom.lib;

import java.io.File;
import java.io.FilenameFilter;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;

import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;

import org.slf4j.Logger;
import org.xdi.util.StringHelper;

/**
 * Custom libraries load helper
 *
 * @author Yuriy Movchan Date: 07/10/2017
 */
@ApplicationScoped
public class CustomLibrariesLoader implements Serializable {

	private static final long serialVersionUID = 3918267172467576424L;

	private static final String SERVER_BASE_PATH = "server.base";
	private static final String CUSTOM_LIBS_PATH = "/custom/libs";

	@Inject
	protected Logger log;

	public void init() {
		loadCustomLibraries();
	}

	private void loadCustomLibraries() {
		try {
			String customLibrariesPath = getCustomLibrariesPath();
			if (StringHelper.isEmpty(customLibrariesPath)) {
				return;
			}

			// Get the method URLClassLoader#addURL(URL)
			Method method = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
			// Make it accessible as the method is protected
			method.setAccessible(true);

			ClassLoader webAppClassLoader = Thread.currentThread().getContextClassLoader();
			String[] paths = { customLibrariesPath };
			for (String path : paths) {
				File parent = new File(path);
				File[] jars = parent.listFiles(new FilenameFilter() {
					@Override
					public boolean accept(final File dir, final String name) {
						return name.endsWith(".jar");
					}
				});

				if (jars == null) {
					continue;
				}

				for (File jar : jars) {
					method.invoke(webAppClassLoader, jar.toURI().toURL());
					log.debug("Loaded custom librarty '{}'", jar.toURI().toURL());
				}
			}

			// Restore previous state
			method.setAccessible(false);
		} catch (Exception ex) {
			log.error("Failed to register custom librarties");
		}
	}

	public static String getCustomLibrariesPath() {
		String externalResourceBase = System.getProperty(SERVER_BASE_PATH);
		if (StringHelper.isNotEmpty(externalResourceBase)) {
			externalResourceBase += CUSTOM_LIBS_PATH;
		} else {
			return null;
		}

		return externalResourceBase;
	}

}

/*
 * oxCore is available under the MIT License (2008). See http://opensource.org/licenses/MIT for full text.
 *
 * Copyright (c) 2014, Gluu
 */
package org.xdi.service.custom.lib;

import java.io.File;
import java.io.FilenameFilter;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;

import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;

import org.slf4j.Logger;
import org.xdi.util.StringHelper;

/**
 * Custom libraries load helper
 *
 * @author Yuriy Movchan Date: 07/10/2017
 */
@ApplicationScoped
public class CustomLibrariesLoader implements Serializable {

	private static final long serialVersionUID = 3918267172467576424L;

	private static final String SERVER_BASE_PATH = "server.base";
	private static final String CUSTOM_LIBS_PATH = "/custom/libs";

	@Inject
	protected Logger log;

	public void init() {
		loadCustomLibraries();
	}

	private void loadCustomLibraries() {
		try {
			String customLibrariesPath = getCustomLibrariesPath();
			if (StringHelper.isEmpty(customLibrariesPath)) {
				return;
			}

			// Get the method URLClassLoader#addURL(URL)
			Method method = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
			// Make it accessible as the method is protected
			method.setAccessible(true);

			ClassLoader webAppClassLoader = Thread.currentThread().getContextClassLoader();
			String[] paths = { customLibrariesPath };
			for (String path : paths) {
				File parent = new File(path);
				File[] jars = parent.listFiles(new FilenameFilter() {
					@Override
					public boolean accept(final File dir, final String name) {
						return name.endsWith(".jar");
					}
				});

				if (jars == null) {
					continue;
				}

				for (File jar : jars) {
					method.invoke(webAppClassLoader, jar.toURI().toURL());
					log.debug("Loaded custom librarty '{}'", jar.toURI().toURL());
				}
			}

			// Restore previous state
			method.setAccessible(false);
		} catch (Exception ex) {
			log.error("Failed to register custom librarties");
		}
	}

	public static String getCustomLibrariesPath() {
		String externalResourceBase = System.getProperty(SERVER_BASE_PATH);
		if (StringHelper.isNotEmpty(externalResourceBase)) {
			externalResourceBase += CUSTOM_LIBS_PATH;

			return externalResourceBase;
		}

		return null;
	}

}

Simplify code