fr.dyade.aaa.agent.conf.A3CMLSaxWrapper Maven / Gradle / Ivy
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Builds the Joram a3 rt project.
/*
* Copyright (C) 2002-2022 ScalAgent Distributed Technologies
*
* This library 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 any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
package fr.dyade.aaa.agent.conf;
import java.io.*;
import org.objectweb.util.monolog.api.BasicLevel;
import javax.xml.XMLConstants;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.InputSource;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
/**
* XML SAX Wrapper for A3 configuration file.
*/
public class A3CMLSaxWrapper extends DefaultHandler implements A3CMLWrapper {
protected A3CMLConfig a3cmlConfig = null;
public A3CMLSaxWrapper() {}
/**
* Name of configuration to get from the file.
*/
String configName = "default";
/** Working attribute used during configuration's */
String conf = null;
/**
* Working attribute used during domain's definition between start and
* end element.
*/
A3CMLDomain domain = null;
/**
* Working attribute used during server's definition between start and
* end element.
*/
A3CMLServer server = null;
/**
* Working attribute used during network's definition between start and
* end element.
*/
A3CMLNetwork network = null;
/**
* Working attribute used during service's definition between start and
* end element.
*/
A3CMLService service = null;
/**
* Working attribute used during service's definition between start and
* end element.
*/
A3CMLProperty property = null;
/**
* Working attribute used during jvmArgs' definition between start and
* end element.
*/
String jvmArgs = null;
/**
* Working attribute used during nat' definition between start and
* end element.
*/
A3CMLNat nat = null;
/**
* Parses the xml file named cfgFileName and calls handler
* methods. Calls only methode startDocument(),
* startElement, endElement and
* endDocument.
*
* @param cfgReader the Reader to read the configuration from.
* @param cfgName the name of the configuration
* @return The configuration object.
*
* @exception Exception unspecialized error
*/
public A3CMLConfig parse(Reader cfgReader,
String cfgName) throws Exception {
this.configName = cfgName;
a3cmlConfig = new A3CMLConfig();
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
parser.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, "");
parser.setProperty(XMLConstants.ACCESS_EXTERNAL_SCHEMA, "");
InputSource is = new InputSource(cfgReader);
try {
parser.parse(is, this);
} catch (Exception exc) {
if (Log.logger.isLoggable(BasicLevel.DEBUG))
Log.logger.log(BasicLevel.WARN, "Error parsing XML configuration: ", exc);
else
Log.logger.log(BasicLevel.WARN, "Error parsing XML configuration: " + exc.getMessage());
throw new ParseException(exc);
}
return a3cmlConfig;
}
/**
* Handles notification of a non-recoverable parser error.
*
* @param e The warning information encoded as an exception.
*
* @exception SAXException
* Any SAX exception, possibly wrapping another exception.
*/
public void fatalError(SAXParseException e) throws SAXException {
throw e;
}
/**
* Handles notification of a recoverable parser error.
*
* @param e The warning information encoded as an exception.
*
* @exception SAXException
* Any SAX exception, possibly wrapping another exception.
*/
public void error(SAXParseException e) throws SAXException {
throw e;
}
/**
* Handles notification of a parser warning.
*
* @param e The warning information encoded as an exception.
*
* @exception SAXException
* Any SAX exception, possibly wrapping another exception.
*/
public void warning(SAXParseException e) throws SAXException {
// TODO a warning could probably be ignored
// to check when we know what could possibly generate a warning
throw e;
}
/**
* Initializes parsing of a document.
*
* @exception SAXException
* unspecialized error
*/
public void startDocument() throws SAXException {
if (Log.logger.isLoggable(BasicLevel.DEBUG))
Log.logger.log(BasicLevel.DEBUG, "startDocument");
}
/**
* Receive notification of the start of an element.
*
* @param uri The Namespace URI
* @param localName The local name
* @param rawName The qualified name
* @param atts The attributes attached to the element.
*
* @exception SAXException
* unspecialized error
*/
public void startElement(String uri,
String localName,
String rawName,
Attributes atts) throws SAXException {
String name = rawName;
if (Log.logger.isLoggable(BasicLevel.DEBUG))
Log.logger.log(BasicLevel.DEBUG, "startElement: " + name);
if (name.equals(A3CML.ELT_CONFIG)) {
conf = atts.getValue(A3CML.ATT_NAME);
if (conf == null) conf = configName;
} else if (configName.equals(conf)) {
if (name.equals(A3CML.ELT_DOMAIN)) {
try {
domain = new A3CMLDomain(atts.getValue(A3CML.ATT_NAME),
atts.getValue(A3CML.ATT_NETWORK));
} catch (Exception exc) {
throw new SAXException(exc.getMessage());
}
} else if (name.equals(A3CML.ELT_SERVER)) {
try {
short sid;
try {
sid = Short.parseShort(atts.getValue(A3CML.ATT_ID));
} catch (NumberFormatException exc) {
throw new Exception("bad value for server id: " +
atts.getValue(A3CML.ATT_ID));
}
server = new A3CMLServer(sid,
atts.getValue(A3CML.ATT_NAME),
atts.getValue(A3CML.ATT_HOSTNAME));
} catch (Exception exc) {
throw new SAXException(exc.getMessage());
}
} else if (name.equals(A3CML.ELT_NETWORK)) {
try {
int port;
try {
port = Integer.parseInt(atts.getValue(A3CML.ATT_PORT));
} catch (NumberFormatException exc) {
throw new Exception("bad value for network port: " +
atts.getValue(A3CML.ATT_PORT));
}
network = new A3CMLNetwork(atts.getValue(A3CML.ATT_DOMAIN),
port);
} catch (Exception exc) {
throw new SAXException(exc.getMessage());
}
} else if (name.equals(A3CML.ELT_SERVICE)) {
service = new A3CMLService(atts.getValue(A3CML.ATT_CLASS),
atts.getValue(A3CML.ATT_ARGS));
} else if (name.equals(A3CML.ELT_PROPERTY)) {
property = new A3CMLProperty(atts.getValue(A3CML.ATT_NAME),
atts.getValue(A3CML.ATT_VALUE));
} else if (name.equals(A3CML.ELT_NAT)) {
nat = new A3CMLNat(Short.parseShort(atts.getValue(A3CML.ATT_SID)),
atts.getValue(A3CML.ATT_HOSTNAME),
Integer.parseInt(atts.getValue(A3CML.ATT_PORT)));
} else if (name.equals(A3CML.ELT_JVM_ARGS)) {
jvmArgs = atts.getValue(A3CML.ATT_VALUE);
} else {
throw new SAXException("unknown element \"" + name + "\"");
}
}
}
/**
* Receive notification of the end of an element.
*
* @param uri The Namespace URI
* @param localName The local name
* @param rawName The qualified name
*
* @exception SAXException
* unspecialized error
*/
public void endElement(String uri,
String localName,
String rawName) throws SAXException {
String name = rawName;
if (Log.logger.isLoggable(BasicLevel.DEBUG))
Log.logger.log(BasicLevel.DEBUG, "endElement: " + name);
if (name.equals(A3CML.ELT_CONFIG)) {
conf = null;
} else if (configName.equals(conf)) {
try {
if (name.equals(A3CML.ELT_DOMAIN)) {
a3cmlConfig.addDomain(domain);
domain = null;
} else if (name.equals(A3CML.ELT_SERVER)) {
a3cmlConfig.addServer(server);
server = null;
} else if (name.equals(A3CML.ELT_NETWORK)) {
if (server != null) {
server.addNetwork(network);
// Add the server to the corresponding domains
a3cmlConfig.getDomain(network.domain).addServer(server);
} else {
// Can never happen (see DTD).
}
network = null;
} else if (name.equals(A3CML.ELT_SERVICE)) {
if (server != null) {
server.addService(service);
} else {
// Can never happen (see DTD).
}
service = null;
} else if (name.equals(A3CML.ELT_PROPERTY)) {
if (server == null)
a3cmlConfig.addProperty(property); // Global property
else if (server != null)
server.addProperty(property); // Server property
property = null;
} else if (name.equals(A3CML.ELT_NAT)) {
if (server != null)
server.addNat(nat);
nat = null;
} else if (name.equals(A3CML.ELT_JVM_ARGS)) {
if (server != null && jvmArgs != null)
server.jvmArgs = jvmArgs;
jvmArgs = null;
} else {
throw new SAXException("unknown element \"" + name + "\"");
}
} catch (SAXException exc) {
throw exc;
} catch (Exception exc) {
throw new SAXException(exc.getMessage());
}
}
}
/**
* Finalizes parsing of a document.
*
* @exception SAXException
* unspecialized error
*/
public void endDocument() throws SAXException {
if (Log.logger.isLoggable(BasicLevel.DEBUG))
Log.logger.log(BasicLevel.DEBUG, "endDocument");
}
}