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org.glassfish.config.support.DomainXml Maven / Gradle / Ivy
/*
* Copyright (c) 2022 Contributors to the Eclipse Foundation
* Copyright (c) 2008, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.config.support;
import com.sun.enterprise.config.serverbeans.Cluster;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.module.ModulesRegistry;
import com.sun.enterprise.module.bootstrap.StartupContext;
import com.sun.enterprise.util.LocalStringManagerImpl;
import com.sun.enterprise.util.io.FileUtils;
import jakarta.inject.Inject;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.locks.Lock;
import java.util.function.Supplier;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLResolver;
import javax.xml.stream.XMLStreamException;
import org.glassfish.api.admin.RuntimeType;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.api.admin.config.ConfigurationCleanup;
import org.glassfish.api.admin.config.ConfigurationUpgrade;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.utilities.ServiceLocatorUtilities;
import org.glassfish.server.ServerEnvironmentImpl;
import org.jvnet.hk2.annotations.Optional;
import org.jvnet.hk2.config.ConfigParser;
import org.jvnet.hk2.config.ConfigPopulatorException;
import org.jvnet.hk2.config.DomDocument;
import org.jvnet.hk2.config.Populator;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.badEnv;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.cleaningDomainXmlFailed;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.failedUpgrade;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.noBackupFile;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.noConfigFile;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.startupClass;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.successfulCleanupWith;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.successfulUpgrade;
import static com.sun.enterprise.config.util.ConfigApiLoggerInfo.totalTimeToParseDomain;
import static java.util.logging.Level.*;
/**
* Locates and parses the portion of domain.xml that we care.
*
* @author Jerome Dochez
* @author Kohsuke Kawaguchi
* @author Byron Nevins
*/
public abstract class DomainXml implements Populator {
private static final Logger LOG = Logger.getLogger(DomainXml.class.getName());
@Inject
StartupContext context;
@Inject
protected ServiceLocator habitat;
@Inject
@Optional
private ModulesRegistry registry;
@Inject
XMLInputFactory xif;
@Inject
ServerEnvironmentImpl env;
@Inject
ConfigurationAccess configAccess;
final static LocalStringManagerImpl localStrings = new LocalStringManagerImpl(DomainXml.class);
@Override
public void run(ConfigParser parser) throws ConfigPopulatorException {
LOG.log(FINE, startupClass, this.getClass().getName());
ClassLoader parentClassLoader = registry == null ? getClass().getClassLoader() : registry.getParentClassLoader();
if (parentClassLoader == null) {
parentClassLoader = getClass().getClassLoader();
}
ServiceLocatorUtilities.addOneConstant(habitat, parentClassLoader, null, ClassLoader.class);
String instance = env.getInstanceName();
URL domainURL = null;
try {
domainURL = getDomainXml(env);
parseDomainXml(parser, domainURL, instance);
} catch (NoBackupException ex) {
/* Both files do not exists or are empty */
throwParseError(ex);
} catch (Throwable ex) {
if (domainURL == null || isBackupFile(domainURL)) {
/* Already tried backup file */
throwParseError(ex);
}
/* Retry with backup file*/
try {
domainURL = getAlternativeDomainXml(env);
parseDomainXml(parser, getAlternativeDomainXml(env), instance);
} catch (Throwable e) {
e.addSuppressed(ex);
throwParseError(e);
}
}
if (isBackupFile(domainURL)) {
Lock writeLock = null;
try {
writeLock = configAccess.accessWrite();
File destination = new File(env.getConfigDirPath(), ServerEnvironmentImpl.kConfigXMLFileName);
File backup = new File(env.getConfigDirPath(), ServerEnvironmentImpl.kConfigXMLFileNameBackup);
if (!destination.exists() || (destination.delete() && !destination.exists())) {
FileUtils.renameFile(backup, destination);
}
} catch (IOException | TimeoutException e) {
/* We can safely ignore it as it is not so important */
} finally {
if (writeLock != null) {
writeLock.unlock();
}
}
}
// run the upgrades...
if ("upgrade".equals(context.getPlatformMainServiceName())) {
upgrade();
}
// run the cleanup.
for (ServiceHandle cc : habitat.getAllServiceHandles(ConfigurationCleanup.class)) {
try {
cc.getService(); // run the upgrade
LOG.log(FINE, successfulCleanupWith, cc.getClass());
} catch (Exception e) {
LOG.log(SEVERE, cleaningDomainXmlFailed, new Object[] {cc.getClass(), e});
LOG.log(Level.FINE, "Cleaning the domain.xml failed!", e);
}
}
decorate();
}
protected boolean isBackupFile(URL url) {
return url.getPath().endsWith(ServerEnvironmentImpl.kConfigXMLFileNameBackup);
}
private void throwParseError(Throwable parent) {
throw new ConfigPopulatorException(localStrings.getLocalString("ConfigParsingFailed", "Failed to parse domain.xml"), parent);
}
protected void decorate() {
Server server = habitat.getService(Server.class, env.getInstanceName());
if (server == null) {
LOG.log(SEVERE, badEnv, env.getInstanceName());
return;
}
ServiceLocatorUtilities.addOneConstant(habitat, server, ServerEnvironment.DEFAULT_INSTANCE_NAME, Server.class);
server.getConfig().addIndex(habitat, ServerEnvironment.DEFAULT_INSTANCE_NAME);
Cluster c = server.getCluster();
if (c != null) {
ServiceLocatorUtilities.addOneConstant(habitat, c, ServerEnvironment.DEFAULT_INSTANCE_NAME, Cluster.class);
}
}
protected void upgrade() {
// run the upgrades...
for (ServiceHandle cu : habitat.getAllServiceHandles(ConfigurationUpgrade.class)) {
try {
cu.getService(); // run the upgrade
LOG.log(FINE, successfulUpgrade, cu.getClass());
} catch (Exception e) {
LOG.log(Level.SEVERE, failedUpgrade, new Object[] {cu.getClass(), e});
LOG.log(Level.FINE, "Upgrade of the domain.xml failed!", e);
}
}
}
private boolean checkDomainFile(File domainFile, Supplier errorMessage) {
if (domainFile.exists() && domainFile.length() > 0) {
return true;
}
LOG.log(SEVERE, errorMessage.get());
return false;
}
/**
* Determines the alternative location of the domain.xml file
*/
protected URL getAlternativeDomainXml(ServerEnvironmentImpl env) throws IOException {
File domainXml = new File(env.getConfigDirPath(), ServerEnvironmentImpl.kConfigXMLFileNameBackup);
if (checkDomainFile(domainXml, () -> noBackupFile)) {
return domainXml.toURI().toURL();
}
throw new NoBackupException(env.getConfigDirPath());
}
private static class NoBackupException extends IOException {
private static final long serialVersionUID = 1L;
private NoBackupException(File configDirectory) {
super(localStrings.getLocalString("NoUsableConfigFile", "No usable configuration file at {0}",
configDirectory.getAbsolutePath()));
}
}
/**
* Determines the location of domain.xml to be parsed.
*/
protected URL getDomainXml(ServerEnvironmentImpl env) throws IOException {
File domainXml = new File(env.getConfigDirPath(), ServerEnvironmentImpl.kConfigXMLFileName);
if (checkDomainFile(domainXml, () -> noConfigFile)) {
return domainXml.toURI().toURL();
}
return getAlternativeDomainXml(env);
}
/**
* Parses domain.xml
*/
protected void parseDomainXml(ConfigParser parser, final URL domainXml, final String serverName) {
long startNano = System.nanoTime();
try {
ServerReaderFilter xsr = null;
// Set the resolver so that any external entity references, such
// as a reference to a DTD, return an empty file. The domain.xml
// file doesn't support entity references.
xif.setXMLResolver(new XMLResolver() {
@Override
public Object resolveEntity(String publicID, String systemID, String baseURI, String namespace) throws XMLStreamException {
return new ByteArrayInputStream(new byte[0]);
}
});
if (env.getRuntimeType() == RuntimeType.DAS || env.getRuntimeType() == RuntimeType.EMBEDDED) {
xsr = new DasReaderFilter(domainXml, xif);
} else if (env.getRuntimeType() == RuntimeType.INSTANCE) {
xsr = new InstanceReaderFilter(env.getInstanceName(), domainXml, xif);
} else {
throw new RuntimeException("Internal Error: Unknown server type: " + env.getRuntimeType());
}
Lock lock = null;
try {
// lock the domain.xml for reading if not embedded
try {
lock = configAccess.accessRead();
} catch (Exception e) {
// ignore
}
parser.parse(xsr, getDomDocument());
xsr.close();
} finally {
if (lock != null) {
lock.unlock();
}
}
String errorMessage = xsr.configWasFound();
if (errorMessage != null) {
LOG.log(WARNING, errorMessage);
}
} catch (Exception e) {
if (e instanceof RuntimeException) {
throw (RuntimeException) e;
}
throw new RuntimeException("Fatal Error. Unable to parse " + domainXml, e);
}
LOG.log(CONFIG, totalTimeToParseDomain, System.nanoTime() - startNano);
}
protected abstract DomDocument getDomDocument();
}
