Glassfish example source code file (EarHandler.java)
The Glassfish EarHandler.java source code/*
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package org.glassfish.javaee.full.deployment;
import com.sun.enterprise.deployment.deploy.shared.InputJarArchive;
import java.net.URI;
import java.util.logging.Logger;
import org.glassfish.api.ActionReport;
import org.glassfish.api.deployment.archive.Archive;
import org.glassfish.api.deployment.archive.ArchiveHandler;
import org.glassfish.api.deployment.archive.ReadableArchive;
import org.glassfish.api.deployment.archive.WritableArchive;
import org.glassfish.api.deployment.archive.CompositeHandler;
import org.glassfish.api.deployment.DeploymentContext;
import org.glassfish.api.deployment.DeployCommandParameters;
import org.glassfish.internal.deployment.ExtendedDeploymentContext;
import org.glassfish.internal.api.DelegatingClassLoader;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.deployment.common.DeploymentUtils;
import org.glassfish.deployment.common.DeploymentContextImpl;
import org.glassfish.deployment.common.DeploymentProperties;
import org.glassfish.javaee.core.deployment.ApplicationHolder;
import org.glassfish.loader.util.ASClassLoaderUtil;
import org.glassfish.internal.deployment.Deployment;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.annotations.Inject;
import org.jvnet.hk2.component.Habitat;
import org.jvnet.hk2.component.PreDestroy;
import org.xml.sax.SAXParseException;
import com.sun.enterprise.deploy.shared.AbstractArchiveHandler;
import com.sun.enterprise.deploy.shared.ArchiveFactory;
import com.sun.enterprise.deployment.deploy.shared.Util;
import com.sun.enterprise.util.io.FileUtils;
import com.sun.enterprise.deployment.util.XModuleType;
import com.sun.enterprise.deployment.archivist.ApplicationArchivist;
import com.sun.enterprise.deployment.util.ModuleDescriptor;
import com.sun.enterprise.config.serverbeans.DasConfig;
import com.sun.enterprise.deploy.shared.FileArchive;
import com.sun.enterprise.deployment.deploy.shared.JarArchive;
import com.sun.enterprise.universal.i18n.LocalStringsImpl;
import java.io.*;
import java.util.logging.Level;
import java.net.URLClassLoader;
import java.net.URL;
import java.text.MessageFormat;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import static javax.xml.stream.XMLStreamConstants.*;
/*;
* Created by IntelliJ IDEA.
* User: dochez
* Date: Jan 16, 2009
* Time: 3:33:40 PM
* To change this template use File | Settings | File Templates.
*/
@Service(name="ear")
public class EarHandler extends AbstractArchiveHandler implements CompositeHandler {
@Inject
Deployment deployment;
@Inject
Habitat habitat;
@Inject
ArchiveFactory archiveFactory;
@Inject
ServerEnvironment env;
@Inject
DasConfig dasConfig;
private static final String EAR_LIB = "ear_lib";
private static final String EMBEDDED_RAR = "embedded_rar";
private static LocalStringsImpl strings = new LocalStringsImpl(EarHandler.class);;
private static XMLInputFactory xmlIf = null;
static {
xmlIf = XMLInputFactory.newInstance();
xmlIf.setProperty(XMLInputFactory.SUPPORT_DTD, false);
}
public String getArchiveType() {
return "ear";
}
public String getVersionIdentifier(ReadableArchive archive) {
String versionIdentifier = null;
try {
GFApplicationXmlParser gfApplicationXMLParser = new GFApplicationXmlParser(null);
versionIdentifier = gfApplicationXMLParser.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) throws IOException {
return DeploymentUtils.isEAR(archive);
}
@Override
public void expand(ReadableArchive source, WritableArchive target, DeploymentContext context) throws IOException {
// expand the top level first so we could read application.xml
super.expand(source, target, context);
ReadableArchive source2 = null;
try {
source2 = archiveFactory.openArchive(target.getURI());
ApplicationHolder holder =
getApplicationHolder(source2, context, false);
// now start to expand the sub modules
for (ModuleDescriptor md : holder.app.getModules()) {
String moduleUri = md.getArchiveUri();
ReadableArchive subArchive = null;
WritableArchive subTarget = null;
ReadableArchive subArchiveToExpand = null;
try {
subArchive = source2.getSubArchive(moduleUri);
if (subArchive == null) {
_logger.log(Level.WARNING,
"Exception while locating sub archive: " +
moduleUri);
continue;
}
// optimize performance by retrieving the archive handler
// based on module type first
ArchiveHandler subHandler = getArchiveHandlerFromModuleType(md.getModuleType());
if (subHandler == null) {
subHandler = deployment.getArchiveHandler(subArchive);
}
context.getModuleArchiveHandlers().put(
moduleUri, subHandler);
if (subHandler!=null) {
subTarget = target.createSubArchive(
FileUtils.makeFriendlyFilenameExtension(moduleUri));
/*
* A subarchive might be packaged as a subdirectory
* (instead of a nested JAR) in an EAR. If so and if it
* has the same name as the directory into which we'll
* expand the submodule, make sure it is also of the
* correct archive type (i.e., directory and not JAR)
* in which case we don't need to expand it because the developer
* already did so before packaging.
*/
subArchiveToExpand = chooseSubArchiveToExpand(moduleUri, subTarget, subArchive, source2);
if (subArchiveToExpand != null) {
subHandler.expand(subArchiveToExpand, subTarget, context);
} else {
/*
* The target for expansion is the same URI as the
* subarchive. Make sure they are the same type;
* if so, we just skip the expansion. Otherwise,
* we would leave a JAR where the rest of
* deployment expects a subdirectory so throw an
* exception in that case.
*/
if ( ! areSameStorageType(subTarget, subArchive)) {
final String msg = MessageFormat.format(
_logger.getResourceBundle().getString("enterprise.deployment.backend.badSubModPackaging"),
subArchive.getURI().toASCIIString(),
subArchive.getClass().getName());
throw new RuntimeException(msg);
}
}
// Keep the original submodule file because the app client deployer needs it.
/*
// delete the original module file
File origSubArchiveFile = new File(
target.getURI().getSchemeSpecificPart(), moduleUri);
origSubArchiveFile.delete();
*/
}
} catch(IOException ioe) {
_logger.log(Level.FINE, "Exception while processing " +
moduleUri, ioe);
} finally {
try {
if (subArchive != null) {
subArchive.close();
}
if (subTarget != null) {
subTarget.close();
}
if (subArchiveToExpand != null) {
subArchiveToExpand.close();
}
} catch (IOException ioe) {
// ignore
}
}
}
} finally {
if (source2 != null) {
source2.close();
}
}
}
private ReadableArchive chooseSubArchiveToExpand(
final String moduleURI,
final WritableArchive subTarget,
final ReadableArchive subArchive,
final ReadableArchive expandedOriginalArchive) throws IOException {
/*
* The subArchive will normally be xxx.jar (or .rar, etc.)
* In this case, its URI differs from the URI of the target (which
* will be xxx_jar) and we should expand subArchive into subTarget.
* But the developer might have pre-expanded the archive in which case
* subArchive and subTarget will both be xxx_jar. In such a case
* we do not want to expand the directory onto itself.
*
* Yet, on Windows, it is possible that the xxx_jar directory is left
* over from a previous expansion from xxx.jar to xxx_jar, in which case
* we DO want to expand xxx.jar into xxx_jar.
*/
if (! subTarget.getURI().equals(subArchive.getURI())) {
/*
* The URIs are not the same, so the subArchive is probably xxx.jar
* and the target is probably xxx_jar.
*/
return subArchive;
}
/*
* Try to find the xxx.jar entry in the file archive that is the expanded
* version of the original archive. If that entry exists, then the
* xxx_jar entry in the already-expanded directory is probably
* a left-over from a previous deployment and we should expand the
* original subarchive into it. If, on the other hand, the xxx.jar
* entry does not exist in the expansion, then the developer probably
* packaged the EAR with a pre-expanded module directory instead of
* the module JAR; in that case there is no need to expand the
* pre-expanded directory into itself.
*/
if (expandedOriginalArchive.exists(moduleURI)) {
final URI unexpandedSubArchiveURI = expandedOriginalArchive.getURI().resolve(moduleURI);
return archiveFactory.openArchive(unexpandedSubArchiveURI);
}
return null;
}
private static boolean areSameStorageType(final Archive arch1, final Archive arch2) {
return ( (arch1 instanceof FileArchive && arch2 instanceof FileArchive)
|| (arch1 instanceof JarArchive && arch2 instanceof JarArchive));
}
public ClassLoader getClassLoader(ClassLoader parent, DeploymentContext context) {
final ReadableArchive archive = context.getSource();
ApplicationHolder holder =
getApplicationHolder(archive, context, true);
// the ear classloader hierachy will be
// ear lib classloader -> embedded rar classloader ->
// ear classloader -> various module classloaders
DelegatingClassLoader embeddedConnCl;
EarClassLoader cl;
// add the libraries packaged in the application library directory
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-application.xml
if (compatProp == null) {
GFApplicationXmlParser gfApplicationXmlParser =
new GFApplicationXmlParser(context.getSourceDir());
compatProp = gfApplicationXmlParser.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-application.xml
if (compatProp == null) {
SunApplicationXmlParser sunApplicationXmlParser =
new SunApplicationXmlParser(context.getSourceDir());
compatProp = sunApplicationXmlParser.getCompatibilityValue();
if (compatProp != null) {
context.getAppProps().put(
DeploymentProperties.COMPATIBILITY, compatProp);
}
}
EarLibClassLoader earLibCl = new EarLibClassLoader(ASClassLoaderUtil.getAppLibDirLibraries(context.getSourceDir(), holder.app.getLibraryDirectory(), compatProp), parent);
embeddedConnCl = new DelegatingClassLoader(earLibCl);
cl = new EarClassLoader(embeddedConnCl);
// add ear lib to module classloader list so we can
// clean it up later
cl.addModuleClassLoader(EAR_LIB, earLibCl);
} catch (Exception e) {
_logger.log(Level.SEVERE, strings.get("errAddLibs") ,e);
throw new RuntimeException(e);
}
for (ModuleDescriptor md : holder.app.getModules()) {
ReadableArchive sub = null;
String moduleUri = md.getArchiveUri();
try {
sub = archive.getSubArchive(moduleUri);
if (sub instanceof InputJarArchive) {
throw new IllegalArgumentException(strings.get("wrongArchType", moduleUri));
}
} catch (IOException e) {
_logger.log(Level.FINE, "Sub archive " + moduleUri + " seems unreadable" ,e);
}
if (sub!=null) {
try {
ArchiveHandler handler =
context.getModuleArchiveHandlers().get(moduleUri);
if (handler == null) {
handler = getArchiveHandlerFromModuleType(md.getModuleType());
if (handler == null) {
handler = deployment.getArchiveHandler(sub);
}
context.getModuleArchiveHandlers().put(
moduleUri, handler);
}
if (handler!=null) {
ActionReport subReport =
context.getActionReport().addSubActionsReport();
// todo : this is a hack, once again,
// the handler is assuming a file:// url
ExtendedDeploymentContext subContext =
new DeploymentContextImpl(subReport,
context.getLogger(),
sub,
context.getCommandParameters(
DeployCommandParameters.class), env) {
@Override
public File getScratchDir(String subDirName) {
String modulePortion = Util.getURIName(
getSource().getURI());
return (new File(super.getScratchDir(
subDirName), modulePortion));
}
};
// sub context will store the root archive handler also
// so we can figure out the enclosing archive type
subContext.setArchiveHandler
(context.getArchiveHandler());
sub.setParentArchive(context.getSource());
ClassLoader subCl = handler.getClassLoader(cl, subContext);
if (md.getModuleType().equals(XModuleType.EJB)) {
// for ejb module, we just add the ejb urls
// to EarClassLoader and use that to load
// ejb module
URL[] moduleURLs =
((URLClassLoader)subCl).getURLs();
for (URL moduleURL : moduleURLs) {
cl.addURL(moduleURL);
}
cl.addModuleClassLoader(moduleUri, cl);
PreDestroy.class.cast(subCl).preDestroy();
} else if (md.getModuleType().equals(XModuleType.RAR)) {
embeddedConnCl.addDelegate(
(DelegatingClassLoader.ClassFinder)subCl);
cl.addModuleClassLoader(moduleUri, subCl);
} else {
Boolean isTempClassLoader = context.getTransientAppMetaData(ExtendedDeploymentContext.IS_TEMP_CLASSLOADER, Boolean.class);
if (subCl instanceof URLClassLoader &&
(isTempClassLoader != null) &&
isTempClassLoader) {
// for temp classloader, we add all the module
// urls to the top level EarClassLoader
URL[] moduleURLs =
((URLClassLoader)subCl).getURLs();
for (URL moduleURL : moduleURLs) {
cl.addURL(moduleURL);
}
}
cl.addModuleClassLoader(moduleUri, subCl);
}
}
} catch (IOException e) {
_logger.log(Level.SEVERE, strings.get("noClassLoader", moduleUri), e);
}
}
}
return cl;
}
public boolean accept(ReadableArchive source, String entryName) {
// I am hiding everything but the metadata.
return entryName.startsWith("META-INF");
}
private ApplicationHolder getApplicationHolder(ReadableArchive source,
DeploymentContext context, boolean isDirectory) {
ApplicationHolder holder = context.getModuleMetaData(ApplicationHolder.class);
if (holder==null || holder.app==null) {
try {
long start = System.currentTimeMillis();
ApplicationArchivist archivist = habitat.getComponent(ApplicationArchivist.class);
archivist.setAnnotationProcessingRequested(true);
String xmlValidationLevel = dasConfig.getDeployXmlValidation();
archivist.setXMLValidationLevel(xmlValidationLevel);
if (xmlValidationLevel.equals("none")) {
archivist.setXMLValidation(false);
}
holder = new ApplicationHolder(archivist.createApplication(
source, isDirectory));
_logger.fine("time to read application.xml " + (System.currentTimeMillis() - start));
} catch (IOException e) {
throw new RuntimeException(e);
} catch (SAXParseException e) {
throw new RuntimeException(e);
}
context.addModuleMetaData(holder);
}
if (holder.app==null) {
throw new RuntimeException(strings.get("errReadMetadata"));
}
return holder;
}
// get archive handler from module type
// performance optimization so we don't need to retrieve archive handler
// the normal way which might involve annotation scanning
private ArchiveHandler getArchiveHandlerFromModuleType(XModuleType type) {
if (type.equals(XModuleType.WAR)) {
return habitat.getComponent(ArchiveHandler.class, "war");
} else if (type.equals(XModuleType.RAR)) {
return habitat.getComponent(ArchiveHandler.class, "connector");
} else if (type.equals(XModuleType.EJB) ||
type.equals(XModuleType.CAR)) {
return habitat.getComponent(ArchiveHandler.class, "DEFAULT");
} else {
return null;
}
}
private class GFApplicationXmlParser {
private XMLStreamReader parser = null;
private String compatValue = null;
GFApplicationXmlParser(File baseDir) throws XMLStreamException, FileNotFoundException {
InputStream input = null;
File f = new File(baseDir, "META-INF/glassfish-application.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;
try
{
input = archive.getEntry("META-INF/glassfish-application.xml");
if (input != null) {
// parse elements only from glassfish-web
parser = xmlIf.createXMLStreamReader(input);
int event = 0;
skipRoot("glassfish-application");
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 = xmlIf.createXMLStreamReader(input);
int event = 0;
boolean done = false;
skipRoot("glassfish-application");
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 class SunApplicationXmlParser {
private XMLStreamReader parser = null;
private String compatValue = null;
SunApplicationXmlParser(File baseDir) throws XMLStreamException, FileNotFoundException {
InputStream input = null;
File f = new File(baseDir, "META-INF/sun-application.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 = xmlIf.createXMLStreamReader(input);
int event = 0;
boolean done = false;
skipRoot("sun-application");
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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