/*
* © Copyright IBM Corp. 2012
*
* 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 com.ibm.commons.runtime.naming;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Hashtable;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.spi.ObjectFactory;
/**
* ObjectFactory which will return a java.net.URL instance. Required for use with Tomcat
* as it doesn't provide access for looking up URL's using JNDI.
*
* @author Mark Wallace
*/
public class UrlFactory implements ObjectFactory {
static final String sourceClass = UrlFactory.class.getName();
static final Logger logger = Logger.getLogger(sourceClass);
/* (non-Javadoc)
* @see javax.naming.spi.ObjectFactory#getObjectInstance(java.lang.Object, javax.naming.Name, javax.naming.Context, java.util.Hashtable)
*/
@Override
public Object getObjectInstance(Object obj, Name name, Context nameCtx, Hashtable<?, ?> environment) throws Exception {
if (logger.isLoggable(Level.FINEST)) {
logger.entering(sourceClass, "getObjectInstance");
}
URL url = null;
if (obj != null && obj instanceof Reference) {
Reference reference = (Reference)obj;
if ("java.net.URL".equals(reference.getClassName())) {
RefAddr refAddr = reference.get("url");
if (refAddr != null) {
String urlStr = (String) refAddr.getContent();
if (urlStr != null && urlStr.length() > 0) {
url = createUrl(urlStr);
}
}
}
}
if (logger.isLoggable(Level.FINEST)) {
logger.exiting(sourceClass, "getObjectInstance", url);
}
return url;
}
/**
* Create URL from a string specification provide
*
* @param urlStr
* @return
*/
protected URL createUrl(String urlStr) {
if (logger.isLoggable(Level.FINER)) {
logger.finer("Creating URL instance for: " + urlStr);
}
URL url = null;
try {
url = new URL(urlStr);
} catch (MalformedURLException mue) {
// try using the config path as the context for the URL
String catalinaBase = System.getProperty("catalina.base");
if (catalinaBase != null && catalinaBase.length() > 0) {
try {
File contextDir = new File(catalinaBase, "conf");
if (contextDir.exists()) {
File theFile = new File(contextDir, urlStr);
if (theFile.exists()) {
url = theFile.toURI().toURL();
}
}
}
catch (Exception e) {
}
}
} catch (Exception e) {
logger.log(Level.SEVERE, "Error creating URL instance for: "+url, e);
}
return url;
}
}