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/*
* TeleStax, Open Source Cloud Communications
* Copyright 2011-2016, TeleStax Inc. and individual contributors
* by the @authors tag.
*
* This program is free software: you can redistribute it and/or modify
* under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* JBoss, Home of Professional Open Source
* Copyright 2007-2011, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jdiameter.client.impl.helpers;
import org.jdiameter.api.Configuration;
import org.jdiameter.client.api.IAssembler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Parameter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import static org.jdiameter.client.impl.helpers.ExtensionPoint.*;
import static org.jdiameter.client.impl.helpers.Parameters.ExtensionName;
import static org.jdiameter.client.impl.helpers.Parameters.Extensions;
/**
* IoC for stack
*
* @author [email protected]
* @author Alexandre Mendonca
* @author Bartosz Baranowski
*/
@SuppressWarnings("all") //3rd party lib
public class AssemblerImpl implements IAssembler
{
private static final Logger logger = LoggerFactory.getLogger(AssemblerImpl.class);
private final Map, Object> instances = new ConcurrentHashMap<>();
AssemblerImpl parent;
final AssemblerImpl[] childs = new AssemblerImpl[ExtensionPoint.COUNT];
static private class LazyInstance extends Object
{
}
/**
* Create instance of class with predefined configuration
*
* @param config configuration of stack
* @throws Exception if generated internal exception
*/
public AssemblerImpl(Configuration config) throws Exception
{
Configuration[] ext = config.getChildren(Extensions.ordinal());
for (Configuration e : ext) {
String extName = e.getStringValue(ExtensionName.ordinal(), "");
// Create structure of containers
if (extName.equals(ExtensionPoint.Internal.name())) {
fill(ExtensionPoint.Internal.getExtensionPoints(), e, true);
} else if (extName.equals(ExtensionPoint.StackLayer.name())) {
updateContainer(config, StackLayer, InternalMetaData, InternalSessionFactory, InternalMessageParser, InternalElementParser);
} else if (extName.equals(ExtensionPoint.ControllerLayer.name())) {
updateContainer(config, ControllerLayer, InternalPeerController, InternalPeerFsmFactory, InternalRouterEngine);
} else if (extName.equals(ExtensionPoint.TransportLayer.name())) {
updateContainer(config, TransportLayer, InternalTransportFactory);
}
}
}
private void updateContainer(Configuration config, ExtensionPoint pointType, ExtensionPoint... updEntries) throws ClassNotFoundException
{
for (ExtensionPoint e : updEntries) {
Configuration[] internalConf = config.getChildren(Extensions.ordinal());
String oldValue = internalConf[Internal.id()].getStringValue(e.ordinal(), null);
String newValue = internalConf[pointType.id()].getStringValue(e.ordinal(), null);
if (oldValue != null && newValue != null) {
unregister(loadClass(oldValue));
registerComponentImplementation(loadClass(newValue));
}
}
}
/**
* Create child Assembler
*
* @param parent parent assembler
* @param e child configuration
* @param p extension poit
* @throws Exception
*/
protected AssemblerImpl(AssemblerImpl parent, Configuration e, ExtensionPoint p) throws Exception
{
this.parent = parent;
fill(p.getExtensionPoints(), e, false);
}
private Class loadClass(String className) throws ClassNotFoundException
{
return Thread.currentThread().getContextClassLoader().loadClass(className);
}
private void fill(ExtensionPoint[] codes, Configuration e, boolean check) throws Exception
{
//NOTE: this installs components, but no instances created!
for (ExtensionPoint c : codes) {
String value = e.getStringValue(c.ordinal(), c.defValue());
if (!check && (value == null || value.trim().length() == 0)) {
return;
}
try {
registerComponentImplementation(loadClass(value));
}
catch (NoClassDefFoundError exc) {
throw new Exception(exc);
}
}
}
private Object[] buildArgs(Parameter[] parameters)
{
List
