Package com.sun.enterprise.deploy.jar

Source Code of com.sun.enterprise.deploy.jar.JarHandler$GFEjbJarXMLParser

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*
* Copyright (c) 2008-2011 Oracle 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://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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* file and include the License file at packager/legal/LICENSE.txt.
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package com.sun.enterprise.deploy.jar;

import org.jvnet.hk2.annotations.Service;

import org.glassfish.api.deployment.archive.ArchiveHandler;
import org.glassfish.api.deployment.archive.ReadableArchive;
import org.glassfish.api.deployment.DeploymentContext;
import org.glassfish.deployment.common.DeploymentUtils;
import org.glassfish.deployment.common.DeploymentProperties;
import org.glassfish.loader.util.ASClassLoaderUtil;
import java.net.MalformedURLException;

import com.sun.enterprise.loader.ASURLClassLoader;
import com.sun.enterprise.deploy.shared.AbstractArchiveHandler;

import java.net.URL;
import java.lang.RuntimeException;
import java.io.*;
import java.util.logging.Level;
import java.util.List;
import java.security.AccessController;
import java.security.PrivilegedAction;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import static javax.xml.stream.XMLStreamConstants.*;

/**
* ArchiveHandler implementation for jar files
*
* @author Jerome Dochez
*/
@Service(name="DEFAULT")
public class JarHandler extends AbstractArchiveHandler implements ArchiveHandler {

    public String getArchiveType() {
        return "jar";
    }

    public String getVersionIdentifier(ReadableArchive archive) {
        String versionIdentifier = null;
        try {
            GFEjbJarXMLParser gfXMLParser = new GFEjbJarXMLParser(null);
            versionIdentifier = gfXMLParser.extractVersionIdentifierValue(archive);
        } catch (XMLStreamException e) {
            _logger.log(Level.SEVERE, e.getMessage());
        } catch (IOException e) {
            _logger.log(Level.SEVERE, e.getMessage());
        }
        return versionIdentifier;
    }

    public boolean handles(ReadableArchive archive) {
        if (DeploymentUtils.isEAR(archive)) {
            // I should not handle ear, so ear support must not be available
            // in this distribution
            throw new RuntimeException(
                "no container associated with application of type : ear");
        }
        // but I handle everything that looks like a jar...  
        return true;
    }

    public ClassLoader getClassLoader(final ClassLoader parent, DeploymentContext context) {
        ASURLClassLoader cloader = AccessController.doPrivileged(new PrivilegedAction<ASURLClassLoader>() {
            @Override
            public ASURLClassLoader run() {
                return new ASURLClassLoader(parent);
            }
        });

        try {             
            String compatProp = context.getAppProps().getProperty(
                DeploymentProperties.COMPATIBILITY);
            // if user does not specify the compatibility property
            // let's see if it's defined in glassfish-ejb-jar.xml
            if (compatProp == null) {
                GFEjbJarXMLParser gfEjbJarXMLParser =
                    new GFEjbJarXMLParser(context.getSourceDir());
                compatProp = gfEjbJarXMLParser.getCompatibilityValue();
                if (compatProp != null) {
                    context.getAppProps().put(
                        DeploymentProperties.COMPATIBILITY, compatProp);
                }
            }

            // if user does not specify the compatibility property
            // let's see if it's defined in sun-ejb-jar.xml
            if (compatProp == null) {
                SunEjbJarXMLParser sunEjbJarXMLParser =
                    new SunEjbJarXMLParser(context.getSourceDir());
                compatProp = sunEjbJarXMLParser.getCompatibilityValue();
                if (compatProp != null) {
                    context.getAppProps().put(
                        DeploymentProperties.COMPATIBILITY, compatProp);
                }
            }

            // if the compatibility property is set to "v2", we should add
            // all the jars under the ejb module root to maintain backward
            // compatibility of v2 jar visibility
            if (compatProp != null && compatProp.equals("v2")) {
                List<URL> moduleRootLibraries =
                    ASClassLoaderUtil.getURLsAsList(null,
                    new File[] {context.getSourceDir()}, true);
                for (URL url : moduleRootLibraries) {
                    cloader.addURL(url);
                }
            }

            cloader.addURL(context.getSource().getURI().toURL());
            cloader.addURL(context.getScratchDir("ejb").toURI().toURL());
            // add libraries referenced from manifest
            for (URL url : getManifestLibraries(context)) {
                cloader.addURL(url);
            }
        } catch(Exception e) {
            _logger.log(Level.SEVERE, e.getMessage());
            return null;
        }
        return cloader;
    }

    private static class GFEjbJarXMLParser {
        private XMLStreamReader parser = null;
        private String compatValue = null;

        GFEjbJarXMLParser(File baseDir) throws XMLStreamException, FileNotFoundException {
            InputStream input = null;
            File f = new File(baseDir, "META-INF/glassfish-ejb-jar.xml");
            if (f.exists()) {
                input = new FileInputStream(f);
                try {
                    read(input);
                } finally {
                    if (parser != null) {
                        try {
                            parser.close();
                        } catch(Exception ex) {
                            // ignore
                        }
                    }
                    if (input != null) {
                        try {
                            input.close();
                        } catch(Exception ex) {
                            // ignore
                        }
                    }
                }
            }
        }

        protected String extractVersionIdentifierValue(ReadableArchive archive) throws XMLStreamException, IOException{

            InputStream input = null;
            String versionIdentifierValue = null;
            String rootElement = null;

            try
            {
                rootElement = "glassfish-application-client";
                input = archive.getEntry( "META-INF/glassfish-application-client.xml" );
                if (input == null) {
                    rootElement = "glassfish-ejb-jar";
                    input = archive.getEntry( "META-INF/glassfish-ejb-jar.xml" );
                }

                if (input != null) {

                    // parse elements only from glassfish-web
                    parser = getXMLInputFactory().createXMLStreamReader(input);

                    int event = 0;
                    skipRoot(rootElement);

                    while (parser.hasNext() && (event = parser.next()) != END_DOCUMENT) {
                         if (event == START_ELEMENT) {
                             String name = parser.getLocalName();
                            if ("version-identifier".equals(name)) {
                                versionIdentifierValue = parser.getElementText();
                            } else {
                                 skipSubTree(name);
                            }
                         }
                    }
                }
            }
            finally {
                if (input != null) {
                    try {
                        input.close();
                    } catch(Exception e) {
                        // ignore
                    }
                }
            }

            return  versionIdentifierValue;
        }

        private void read(InputStream input) throws XMLStreamException {
            parser = getXMLInputFactory().createXMLStreamReader(input);

            int event = 0;
            boolean done = false;
            skipRoot("glassfish-ejb-jar");

            while (!done && (event = parser.next()) != END_DOCUMENT) {

                if (event == START_ELEMENT) {
                    String name = parser.getLocalName();
                    if (DeploymentProperties.COMPATIBILITY.equals(name)) {
                        compatValue = parser.getElementText();
                       done = true;
                    } else {
                        skipSubTree(name);
                    }
                }
            }
        }

        private void skipRoot(String name) throws XMLStreamException {
            while (true) {
                int event = parser.next();
                if (event == START_ELEMENT) {
                    if (!name.equals(parser.getLocalName())) {
                       throw new XMLStreamException();
                    }
                    return;
                }
            }
        }

        private void skipSubTree(String name) throws XMLStreamException {
            while (true) {
                int event = parser.next();
                if (event == END_DOCUMENT) {
                    throw new XMLStreamException();
                } else if (event == END_ELEMENT && name.equals(parser.getLocalName())) {
                    return;
                }
            }
        }

        String getCompatibilityValue() {
            return compatValue;
        }
    }

    private static class SunEjbJarXMLParser {
        private XMLStreamReader parser = null;
        private String compatValue = null;

        SunEjbJarXMLParser(File baseDir) throws XMLStreamException, FileNotFoundException {
            InputStream input = null;
            File f = new File(baseDir, "META-INF/sun-ejb-jar.xml");
            if (f.exists()) {
                input = new FileInputStream(f);
                try {
                    read(input);
                } finally {
                    if (parser != null) {
                        try {
                            parser.close();
                        } catch(Exception ex) {
                            // ignore
                        }
                    }
                    if (input != null) {
                        try {
                            input.close();
                        } catch(Exception ex) {
                            // ignore
                        }
                    }
                }
            }
        }

        private void read(InputStream input) throws XMLStreamException {
            parser = getXMLInputFactory().createXMLStreamReader(input);

            int event = 0;
            boolean done = false;
            skipRoot("sun-ejb-jar");

            while (!done && (event = parser.next()) != END_DOCUMENT) {

                if (event == START_ELEMENT) {
                    String name = parser.getLocalName();
                    if (DeploymentProperties.COMPATIBILITY.equals(name)) {
                        compatValue = parser.getElementText();
                       done = true;
                    } else {
                        skipSubTree(name);
                    }
                }
            }
        }

        private void skipRoot(String name) throws XMLStreamException {
            while (true) {
                int event = parser.next();
                if (event == START_ELEMENT) {
                    if (!name.equals(parser.getLocalName())) {
                       throw new XMLStreamException();
                    }
                    return;
                }
            }
        }

        private void skipSubTree(String name) throws XMLStreamException {
            while (true) {
                int event = parser.next();
                if (event == END_DOCUMENT) {
                    throw new XMLStreamException();
                } else if (event == END_ELEMENT && name.equals(parser.getLocalName())) {
                    return;
                }
            }
        }

        String getCompatibilityValue() {
            return compatValue;
        }
    }
}
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