net.imadz.lifecycle.StaticWeaver Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of Lifecycle Show documentation

Lifecycle AOP Framework. Enabling describe enhanced State Diagram with Java language, and processing relational Lifecycle constraints(including: state validations, transitions validations), concurrency, lifecycle callbacks, lifecycle events implicitely with Lifecycle Engine. This engine can be used by class load time (Java Instrumentation) or compile time (Lifecycle-StaticWeaver-maven-plugin).

There is a newer version: 0.9.13

Show newest version

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright (c) 2013-2020 Madz. 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://raw.github.com/zhongdj/Lifecycle/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 packager/legal/LICENSE.txt.
 * 
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 * 
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license." If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above. However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
package net.imadz.lifecycle;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.logging.LogManager;
import java.util.logging.Logger;

import net.imadz.lifecycle.annotations.LifecycleMeta;
import net.imadz.lifecycle.meta.type.LifecycleMetaRegistry;
import net.imadz.verification.VerificationException;

public class StaticWeaver {

    private final static Logger logger = Logger.getLogger("Lifecycle Framework");
    private ClassLoader classLoader;
    private LifecycleMetaRegistry registry = AbsStateMachineRegistry.getInstance();

    public static void main(String[] args) throws ClassNotFoundException, SecurityException, FileNotFoundException, IOException, VerificationException {
        if ( 1 != args.length ) {
            throw new IllegalArgumentException("Usage: net.imadz.lifecycle.StaticWeaver ${classesFolder}");
        }
        LogManager.getLogManager().readConfiguration(StaticWeaver.class.getResourceAsStream("lifecycle_logging.properties"));
        final String targetClassesFolder = args[0];
        final File folder = new File(targetClassesFolder);
        final StaticWeaver weaver = new StaticWeaver();
        final URL url = folder.toURI().toURL();
        final URL[] urls = new URL[] { url };
        weaver.classLoader = new URLClassLoader(urls, StaticWeaver.class.getClassLoader());
        weaver.processFolder("", folder);
    }

    private void processFolder(String packagePrefix, File folder) throws ClassNotFoundException, VerificationException {
        for ( final File file : folder.listFiles() ) {
            if ( file.isDirectory() ) {
                processFolder(packagePrefix + file.getName() + ".", file);
            } else if ( file.getName().endsWith("class") ) {
                weaveClass(packagePrefix + file.getName().substring(0, file.getName().length() - 6), file);
            }
        }
    }

    private void weaveClass(String className, File file) throws ClassNotFoundException, VerificationException {
        logger.info("loading: " + className);
        Class class1 = classLoader.loadClass(className);
        if ( null != class1.getAnnotation(LifecycleMeta.class) ) {
            registry.loadStateMachineObject(class1);
        }
    }
}