/*
* Copyright 2014 Jeanfrancois Arcand
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.atmosphere.util;
import org.atmosphere.config.ApplicationConfiguration;
import org.atmosphere.config.AtmosphereHandlerConfig;
import org.atmosphere.config.AtmosphereHandlerProperty;
import org.atmosphere.config.FrameworkConfiguration;
import org.atmosphere.cpr.AtmosphereConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
/**
* Descriptor for an Atmosphere configuraton file.
*
* @author Jerome Dochez (for the version shipped in GlassFish v3).
* @author Jeanfrancois Arcand
* @author Sebastien Dionne : sebastien.dionne@gmail.com
*/
public class AtmosphereConfigReader {
private static final AtmosphereConfigReader instance = new AtmosphereConfigReader();
private static final Logger logger = LoggerFactory.getLogger(AtmosphereConfigReader.class);
private AtmosphereConfigReader() {
}
public AtmosphereConfig parse(AtmosphereConfig config, String filename) throws FileNotFoundException {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try {
return parse(config, factory.newDocumentBuilder().parse(filename));
} catch (SAXException e) {
logger.error(e.getMessage(), e);
throw new RuntimeException(e);
} catch (IOException e) {
logger.error(e.getMessage(), e);
throw new RuntimeException(e);
} catch (ParserConfigurationException e) {
logger.error(e.getMessage(), e);
throw new RuntimeException(e);
}
}
public AtmosphereConfig parse(AtmosphereConfig config, InputStream stream) throws FileNotFoundException {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try {
return parse(config, factory.newDocumentBuilder().parse(stream));
} catch (SAXException e) {
logger.error(e.getMessage(), e);
throw new RuntimeException(e);
} catch (IOException e) {
logger.error(e.getMessage(), e);
throw new RuntimeException(e);
} catch (ParserConfigurationException e) {
logger.error(e.getMessage(), e);
throw new RuntimeException(e);
}
}
/**
* Parse the atmosphere-handlers element.
*
* @param document
*/
private AtmosphereConfig parse(AtmosphereConfig config, Document document) {
Element element = document.getDocumentElement();
NodeList atmosphereHandlers = element.getElementsByTagName("atmosphere-handler");
for (int i = 0; i < atmosphereHandlers.getLength(); i++) {
AtmosphereHandlerConfig atmoHandler = new AtmosphereHandlerConfig();
Node root = atmosphereHandlers.item(i);
// parse Attributes
for (int j = 0; j < root.getAttributes().getLength(); j++) {
Node attribute = root.getAttributes().item(j);
if (attribute.getNodeName().equals("support-session")) {
atmoHandler.setSupportSession(attribute.getNodeValue());
} else if (attribute.getNodeName().equals("context-root")) {
atmoHandler.setContextRoot(attribute.getNodeValue());
} else if (attribute.getNodeName().equals("class-name")) {
atmoHandler.setClassName(attribute.getNodeValue());
} else if (attribute.getNodeName().equals("broadcaster")) {
atmoHandler.setBroadcaster(attribute.getNodeValue());
} else if (attribute.getNodeName().equals("broadcasterCache")) {
atmoHandler.setBroadcasterCache(attribute.getNodeValue());
} else if (attribute.getNodeName().equals("broadcastFilterClasses")) {
String[] values = attribute.getNodeValue().split(",");
for (String value : values) {
atmoHandler.getBroadcastFilterClasses().add(value);
}
} else if (attribute.getNodeName().equals("comet-support")) {
atmoHandler.setCometSupport(attribute.getNodeValue());
} else if (attribute.getNodeName().equals("interceptorClasses")) {
String[] values = attribute.getNodeValue().split(",");
for (String value : values) {
atmoHandler.getAtmosphereInterceptorClasses().add(value);
}
}
}
NodeList list = root.getChildNodes();
for (int j = 0; j < list.getLength(); j++) {
Node n = list.item(j);
if (n.getNodeName().equals("property")) {
String param = n.getAttributes().getNamedItem("name").getNodeValue();
String value = n.getAttributes().getNamedItem("value").getNodeValue();
atmoHandler.getProperties().add(new AtmosphereHandlerProperty(param, value));
} else if (n.getNodeName().equals("applicationConfig")) {
String param = null;
String value = null;
for (int k = 0; k < n.getChildNodes().getLength(); k++) {
Node n2 = n.getChildNodes().item(k);
if (n2.getNodeName().equals("param-name")) {
param = n2.getFirstChild().getNodeValue();
} else if (n2.getNodeName().equals("param-value")) {
if (n2 != null) {
value = n2.getFirstChild().getNodeValue();
}
}
}
if (param != null) {
atmoHandler.getApplicationConfig().add(new ApplicationConfiguration(param, value));
}
} else if (n.getNodeName().equals("frameworkConfig")) {
String param = null;
String value = null;
for (int k = 0; k < n.getChildNodes().getLength(); k++) {
Node n2 = n.getChildNodes().item(k);
if (n2.getNodeName().equals("param-name")) {
param = n2.getFirstChild().getNodeValue();
} else if (n2.getNodeName().equals("param-value")) {
if (n2 != null) {
value = n2.getFirstChild().getNodeValue();
}
}
}
if (param != null) {
atmoHandler.getFrameworkConfig().add(
new FrameworkConfiguration(param, value));
}
}
}
config.getAtmosphereHandlerConfig().add(atmoHandler);
}
return config;
}
public static AtmosphereConfigReader getInstance() {
return instance;
}
}