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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.internal.net4j;
import org.eclipse.net4j.acceptor.IAcceptor;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import org.eclipse.net4j.internal.util.security.NegotiatorFactory;
import org.eclipse.net4j.util.container.IManagedContainer;
import org.eclipse.net4j.util.security.INegotiator;
import org.eclipse.internal.net4j.acceptor.Acceptor;
import org.eclipse.internal.net4j.acceptor.AcceptorFactory;
import org.eclipse.internal.net4j.bundle.OM;
import org.eclipse.core.runtime.CoreException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author Eike Stepper
*/
public class Net4jConfigurator
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, Net4jConfigurator.class);
private IManagedContainer container;
public Net4jConfigurator(IManagedContainer container)
{
this.container = container;
}
public IManagedContainer getContainer()
{
return container;
}
public IAcceptor[] configure(File configFile) throws ParserConfigurationException, SAXException, IOException,
CoreException
{
if (TRACER.isEnabled())
{
TRACER.trace("Configuring Net4j server from " + configFile.getAbsolutePath());
}
List<IAcceptor> acceptors = new ArrayList<IAcceptor>();
Document document = getDocument(configFile);
NodeList acceptorConfigs = document.getElementsByTagName("acceptor");
for (int i = 0; i < acceptorConfigs.getLength(); i++)
{
Element acceptorConfig = (Element)acceptorConfigs.item(i);
IAcceptor acceptor = configureAcceptor(acceptorConfig);
acceptors.add(acceptor);
}
return acceptors.toArray(new IAcceptor[acceptors.size()]);
}
protected IAcceptor configureAcceptor(Element acceptorConfig)
{
String type = acceptorConfig.getAttribute("type");
// TODO Make the following dependent on the "type" attribute value
String listenAddr = acceptorConfig.getAttribute("listenAddr");
String port = acceptorConfig.getAttribute("port");
String description = (listenAddr == null ? "" : listenAddr) + (port == null ? "" : ":" + port);
Acceptor acceptor = (Acceptor)container.getElement(AcceptorFactory.PRODUCT_GROUP, type, description);
NodeList negotiatorConfigs = acceptorConfig.getElementsByTagName("negotiator");
if (negotiatorConfigs.getLength() > 1)
{
throw new IllegalStateException("A maximum of one negotiator can be configured for acceptor " + acceptor);
}
if (negotiatorConfigs.getLength() == 1)
{
Element negotiatorConfig = (Element)negotiatorConfigs.item(0);
INegotiator negotiator = configureNegotiator(negotiatorConfig);
acceptor.setNegotiator(negotiator);
}
return acceptor;
}
protected INegotiator configureNegotiator(Element negotiatorConfig)
{
String type = negotiatorConfig.getAttribute("type");
String description = negotiatorConfig.getAttribute("description");
INegotiator negotiator = (INegotiator)container.getElement(NegotiatorFactory.PRODUCT_GROUP, type, description);
return negotiator;
}
protected Document getDocument(File configFile) throws ParserConfigurationException, SAXException, IOException
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
return builder.parse(configFile);
}
protected Element getStoreConfig(Element repositoryConfig)
{
NodeList storeConfigs = repositoryConfig.getElementsByTagName("store");
if (storeConfigs.getLength() != 1)
{
String repositoryName = repositoryConfig.getAttribute("name");
throw new IllegalStateException("Exactly one store must be configured for repository " + repositoryName);
}
return (Element)storeConfigs.item(0);
}
public static Map<String, String> getProperties(Element element, int levels)
{
Map<String, String> properties = new HashMap<String, String>();
collectProperties(element, "", properties, levels);
return properties;
}
private static void collectProperties(Element element, String prefix, Map<String, String> properties, int levels)
{
if ("property".equals(element.getNodeName()))
{
String name = element.getAttribute("name");
String value = element.getAttribute("value");
properties.put(prefix + name, value);
prefix += name + ".";
}
if (levels > 0)
{
NodeList childNodes = element.getChildNodes();
for (int i = 0; i < childNodes.getLength(); i++)
{
Node childNode = childNodes.item(i);
if (childNode instanceof Element)
{
collectProperties((Element)childNode, prefix, properties, levels - 1);
}
}
}
}
}
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