/*******************************************************************************
* Copyright (c) 2008, 2010 VMware Inc.
* 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:
* VMware Inc. - initial contribution
*******************************************************************************/
package org.eclipse.virgo.snaps.core.internal.webapp.config;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import org.osgi.framework.Bundle;
import org.osgi.framework.FrameworkUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.eclipse.virgo.util.io.IOUtils;
public final class BundleWebXmlLoader {
private static final Logger logger = LoggerFactory.getLogger(BundleWebXmlLoader.class);
private static final String ENTRY_WEB_XML = "WEB-INF/web.xml";
private static final String ENTRY_DEFAULT_WEB_XML = "META-INF/snaps/default-web.xml";
public static WebXml loadWebXml(Bundle bundle) {
MutableWebXml webXml = new MutableWebXml();
URL entry = bundle.getEntry(ENTRY_WEB_XML);
doParse(entry, webXml);
entry = FrameworkUtil.getBundle(BundleWebXmlLoader.class).getEntry(ENTRY_DEFAULT_WEB_XML);
doParse(entry, webXml);
validateWebXml(webXml);
return webXml;
}
/**
* @param webXml
*/
private static void validateWebXml(MutableWebXml webXml) {
StandardWebXmlValidator validator = new StandardWebXmlValidator();
validator.validate(webXml);
}
private static void doParse(URL webXmlUrl, MutableWebXml webXml) {
if (webXmlUrl == null) {
return;
}
InputStream stream = null;
try {
logger.info("Loading configuration from '{}'", webXmlUrl.toExternalForm());
stream = webXmlUrl.openStream();
new WebXmlParser().parse(stream, webXml);
} catch (IOException e) {
throw new WebXmlParseException("Unable to read '" + webXmlUrl + "'", e);
} finally {
if (stream != null) {
IOUtils.closeQuietly(stream);
}
}
}
}